JPH11146974A - Game medium polishing device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To avoid the generation of a defective caused by abnormality in polishing of a game medium. SOLUTION: Under a lattice part 105, a recovering pipe 13 is connected through a recovering hopper 12. Above the recovering pipe 13, a first proximity switch 17 is disposed, and the first proximity switch 17 detects if polishing material passing (or dropping) exists or not to supply a detection signal of it to a controller 6. In a polishing material containing tank 14, a second proximity switch 19 is disposed, and the second proximity switch 19 constantly detects the polishing material stored to supply a detection signal of it to the controller 6 in a correct condition. The controller 6 controls rotation of springs 2, 7 through motors 4, 9 based on the signals from the switches 17, 19.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an apparatus for polishing game media such as pachinko balls in a game arcade, and to an apparatus for polishing a game medium while circulating an abrasive.

[0002]

2. Description of the Related Art As a conventional game media polishing apparatus, there is one disclosed in Japanese Patent Publication No. 2-45468.

[0003] In this ball polishing apparatus, the pachinko balls (game media) and the abrasive which are sequentially sent are stirred and mixed while being lifted upward through a lifting pipe, thereby polishing the pachinko balls. The pachinko balls and abrasives that have been pumped to the upper portion of the lifting pipe are sent to a transport path that communicates with the upper portion of the lifting pipe, and pass over a cage (a sorting device) provided in the middle of the transport path. At this time, the abrasive is separated from the pachinko balls and falls downward, and the dropped abrasive is guided to the recovery pipe and returned to the lower abrasive storage tank.
Further, the abrasive in the abrasive storage tank is sequentially sent to the lower part of the pumping pipe and circulated.

The pachinko balls separated from the abrasive by the sorting device are sent to the pachinko machine through a ball storage tank and a supply gutter.

[0005]

As described above, the abrasive circulates through the pumping pipe and the recovery pipe. However, even if the amount of the abrasive contained in the polishing apparatus is an appropriate amount, the action of the static electricity does not occur. In some cases, a lump of abrasive may stick in the middle of the collection pipe and do not fall downward, and the abrasive that sequentially falls on the upper part of the attached abrasive accumulates and the abrasive collects up to the upper part of the recovery pipe There is a risk.

[0006] In addition, although the replacement of the abrasive is performed intermittently after an appropriate period, the amount of the abrasive contained in the polishing apparatus itself may become excessive due to an error between the amount of extraction and the amount of input. is there. Furthermore, the amount of abrasive deposited in the collection pipe also varies due to fluctuations in the load state depending on the supply amount of pachinko balls to be polished and the like. And also by these, the upper end part of the abrasive material accumulated in the collection pipe is
There is a case where the state is accumulated up to the upper part of the recovery pipe.

[0007] Further, when the accumulation of the abrasive material further progresses and the abrasive material overflows to the above-mentioned pond and closes the eyes of the pond, the pachinko ball and the abrasive are not separated by the sorting device, and the polish is also used. Is sent to the pachinko machine through the supply gutter. This causes the abrasive to be sent together with the pachinko balls into the pachinko machine, causing the balls to be clogged.

When the amount of the abrasive in the polishing apparatus becomes smaller than a predetermined amount due to intermittent replacement of the abrasive, etc., the abrasive and the pachinko balls which are pumped in the pumping pipe are used. The mixing balance may be deteriorated, and the pachinko balls may be worn out more than necessary, may cause unnecessary flaws, and may generate an abnormal metal sound.

SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned problems, and has as its object to avoid the occurrence of a problem due to an abnormality during polishing of a game medium.

[0010]

In order to solve the above-mentioned problems, the present invention according to the first aspect of the present invention is directed to a method of stirring and mixing an abrasive and a game medium with an agitating and pumping device provided therein. A pumping pipe for lifting, a sorting device for separating abrasives from a game medium sequentially communicated with an upper portion of the pumping pipe and dropping the abrasives downward, and an abrasive separated by the sorting device A polishing material return path that guides downward, an abrasive storage part that communicates with a lower part of the abrasive return path and stores the abrasive, and communicates with a lower part of the pumping pipe, and drives the stirring and lifting device. An overflow detection sensor provided above the abrasive return path to detect accumulation of the abrasive, and a sensor installed on the basis of a detection signal of the overflow detection sensor. If it is determined that the abrasive until location is accumulated in the turn OFF the power supply to the actuator is to provide a polishing apparatus of the game medium characterized by a controller for stopping the stirring pumped device.

According to the present invention, the presence or absence of the possibility that the abrasive collects to the upper portion of the abrasive return path and overflows to the sorting device is detected by the overflow detection sensor. Then, the polishing of the game medium is interrupted.

This prevents the abrasive from overflowing to the sorting device position. Next, according to a second aspect of the present invention, in addition to the configuration of the first aspect, an alarming means capable of generating an alarm for calling attention is provided, and the controller turns off the power supply to the actuator. And supplying a warning signal for calling attention to the warning means.

According to the present invention, it is possible to warn that polishing has been interrupted due to the possibility that the abrasive may overflow. Here, the invention according to claim 2 is an apparatus capable of performing both a stop and an alarm of the stirring and transporting apparatus in order to prevent overflow of the abrasive, but only one of the processes is operated. It may be. In the case where only the alarm process is performed, there is an advantage that it is possible to prevent the stirring / lifting device from being stopped due to malfunction or failure of the overflow detection sensor.

Next, a third aspect of the present invention provides a pumping pipe for pumping up an abrasive and a game medium while stirring and mixing the same with an agitating pumping device disposed therein, and communicates with an upper portion of the pumping pipe. A sorting device that separates the abrasive from the game media that is sequentially sent and drops the abrasive downward, an abrasive return path that guides the abrasive separated by the sorting device downward, and an abrasive return path. In a ball polishing apparatus including an abrasive storage section communicating with a lower part and storing an abrasive and communicating with a lower part of the pumping pipe, and an actuator for driving the stirring and pumping apparatus, an alarm for calling attention is issued. Alarm means that can be generated, an abrasive detection sensor provided in the lower part of the abrasive return path or in the abrasive storage part to detect the presence or absence of the abrasive, and based on a signal from the abrasive detection sensor, If the amount is less than the required amount When the cross-sectional is characterized in further comprising a controller supplying a reminder alarm signal to said alarm means.

According to the present invention, the shortage of the abrasive is reliably detected and the operator is alerted, so that early processing can be performed. Next, according to a fourth aspect of the present invention, in the configuration according to the third aspect, the controller turns off the power supply to the actuator when supplying the alarm signal to the alarm means, and the stirring and lifting is performed. The feeding device is stopped.

According to the present invention, the polishing is reliably stopped before the polishing material becomes completely short. Here, the invention of claim 4 is an apparatus capable of performing both a stop and an alarm of the stirring and transporting apparatus in order to prevent shortage of the abrasive,
Only one of the processes may be activated.

[0017]

Next, embodiments of the present invention will be described with reference to the drawings. Although a pachinko ball will be described as an example of a game medium, a polishing apparatus for polishing other game media such as medals may be used.

FIG. 1 is a schematic configuration diagram showing an example of a polishing apparatus according to this embodiment. Reference numeral 1 denotes a pumping pipe whose axis is turned up and down, and a spring 2 constituting an agitating pumping apparatus is arranged inside the pumping pipe 1 with its axis up and down. The upper end of the spring 2 is connected to an upper motor 4 through a speed reducer 3, and the upper motor 4 drives the spring 2 to rotate. The upper motor 4 is operated by the current from the current supply device 5,
Adjusts the amount of current supplied to the upper motor 4 by a signal from the controller 6.

The lower end of the lifting pipe 1 communicates with a lifting auxiliary pipe 7. The lifting aid pipe 7 is arranged with its axis oriented in the horizontal direction, and sends the supplied abrasive and pachinko balls to the lifting pipe 1 side by rotation of a second spring 8 disposed inside. is there. Symbol 9 is
This is a lower motor that rotationally drives the second spring 8 and is driven by a current from a current supply device 5. The current supply device 5 adjusts a current supply amount to the lower motor 9 based on a signal from a controller 6. .

A discharge port 1a is provided in the upper part of the above-mentioned delivery pipe 1, and a sorting device 10 communicates with the discharge port 1a. The sorting device 10 has a ramp 10a for guiding a pachinko ball and an abrasive, and a part of the ramp 10a for separating the abrasive from the pachinko ball is provided in a part of the ramp 10a.
0b is provided.

The downstream of the slope 10a communicates with the ball storage tank 11. The ball storage tank 11 stores the pachinko balls and transports the pachinko balls to each pachinko machine (not shown) through the supply gutter 20.

Further, a collecting hopper 12 is provided at a lower portion of the cage 10b, and an upper end of a collecting pipe 13 is connected to an outlet of the collecting hopper 12. Here, the collection hopper 12 and the collection pipe 13 form an abrasive return path. The recovery pipe 13 extends downward and has a lower end connected to the abrasive storage tank 14 (abrasive storage).

The abrasive storage tank 14 can store the abrasive and supply the abrasive to the lifting aid pipe 7. A ball collection tank 15 is connected to the above-mentioned unloading auxiliary pipe 7, and the ball collection tank 15
Has a collection gutter 1 that transports pachinko balls from a pachinko machine.
6 is connected downstream.

In the present embodiment, a first proximity switch 17 of dielectric type or the like, which constitutes an overflow detection sensor, is disposed above the recovery pipe 13, and the first proximity switch 17 is shown in FIG. As shown, the presence or absence of the abrasive 18 passing (falling) is detected, and the detection signal can be supplied to the controller 6. The first proximity switch 17 is connected to the wall 13 of the collection pipe 13 facing the first proximity switch 17.
The detection distance is set such that a is not detected.

In the abrasive storage tank 14,
A second proximity switch 19 of dielectric type or the like constituting an abrasive detection sensor is disposed, and the second proximity switch 1
As shown in FIG. 3, in the normal state, the stored abrasive 18 is always detected, and the detection signal can be supplied to the controller 6. The height of the second proximity switch 19 is set, for example, to a position lower than a target storage level in a no-load (non-operating state).

As shown in FIGS. 4 and 5, the controller 6 continuously or periodically in consideration of the CPU load, etc.
Inputs the detection signal from the first proximity switch 17 (Step 1), to determine the presence or absence of detection of an object (abrasive 18) (Step 2), when the input signals of the object detection, t ₁ hour continuously determines whether the input object detection signal (step 3), if so, turn off the power supply from the current supply device 5 to the motor 4, 9 (step 4), followed, t ₂ hours It is determined whether or not an object detection signal has been input continuously (step 5). If so, a lighting signal for overflow warning of the abrasive 18 is supplied to the control unit of the monitor panel 21 (step 6). If the power supply to the motors 4 and 9 is off when the object non-detection signal is input, the power supply from the current supply device 5 to the motors 4 and 9 is turned on to restart the operation. (Steps 7 and 8) Further, when the lighting signal is output to the monitor panel 21, a light-off signal is supplied to the control unit of the monitor panel 21 (Step 9) to initialize the counters and the like. (Step 1)
0). In FIG. 4, the presence or absence of the output of the driving signal or the like is determined based on the flags F1 and M1. However, the processing flow illustrated in FIG. 4 is an example. The operation may be restarted immediately.

Further, the controller 6 is either continuous or CP.
As shown in FIGS. 6 and 7, a detection signal from the second proximity switch 19 is input periodically (step 21) in consideration of the load of U and the like, and the object (abrasive 18) is detected. object to determine the presence or absence of (step 21), when the input signal of the object undetected, continuously t ₃ hours to determine whether not become the object detection state (step 23), successively t ₃ hours If the detection state is not reached, the abrasive 18
A supply light signal is supplied to the control unit of the monitor panel 21 (step 24). Furthermore, consecutive t ₄ hours to determine whether not become the object detection state (step 25),
If the object detection state has not been achieved continuously for t ₄ hours, the power supply from the current supply device 5 to the motors 4 and 9 is turned off (step 26). Also, consecutive t ₅ hours to determine whether the input object detection signal (Step 2
7), if you enter the object detection signal continuously t ₅ hours, supplies a turn-off signal for the abrasive supply to the control unit of the monitor panel 21 in the case of the state of outputting a lighting signal for the abrasive supply If the power supply to the motors 4 and 9 is off (step 28), the power supply from the current supply device 5 to the motors 4 and 9 is turned on to resume the operation (step 29). Initialization of each counter and the like is performed (step 30). Note that the flow illustrated in FIG. 6 is an example, and the present invention is not limited to this.

Here, the monitor panel 21 and its control section may be provided on an island where the target polishing apparatus is installed, or may be a hall computer for managing the entire hall. Is also good. Further, the monitor panel 21 for both the island unit and the hall computer and its control unit may be used. In this case, a signal from the controller 6 is sent to the control units of both monitor panels 21.

Next, the operation of the polishing apparatus will be described. In the polishing apparatus having the above configuration, in the operating state, the pachinko balls are continuously sent from the ball collection tank 15 to the pumping assist pipe 7 and the abrasive 18 is continuously pumped from the abrasive storage tank 14. It is supplied to the auxiliary pipe 7. The pachinko balls and the abrasive 18 sent to the lifting aid pipe 7 are sent to the lower part of the lifting pipe 1 while being stirred and mixed by the rotation of the second spring 8, and subsequently, the spring 2 in the lifting pipe 1. While being stirred and mixed by the rotation of, it is conveyed upward in the pumping pipe 1. Then, the pachinko balls are polished while being conveyed in the lifting pipe 1.

The pachinko balls and the abrasive 18 conveyed to the upper part of the lifting pipe 1 are sequentially fed to the ramp 10 of the sorting device 10.
The roller 18 rolls along the line a, and the abrasive 18 falls downward at the sub-rib 10b, and the pachinko balls roll toward the ball storage tank 11 side. Thereby, the abrasive 18 is separated from the pachinko balls.

The separated pachinko balls are stored in a ball storage tank 11.
Each pachinko machine is supplied from the ball storage tank 11 through the supply gutter 20. Further, the abrasives 18 that have fallen from the submerged child part 10b fall through the collection pipe 13 through the collection hopper 12 sequentially and are returned to the abrasive storage tank 14.

As described above, the abrasive 18 polishes the supplied pachinko balls while circulating through the lifting pipe 1 and the recovery pipe 13. In a normal state, each abrasive 18 simply drops discretely before the first proximity switch 17. As a result, in the first proximity switch 17,
Since the detection and the non-detection of the object are simply repeated alternately, the controller 6 does not determine that an overflow has occurred. Similarly, in the second proximity switch 19, the level of the upper end portion of the deposited abrasive 18 is higher than the installation position of the second proximity switch 19, so that an object detection signal is always sent to the controller 6. Supplied, controller 6
Is determined to be greater than or equal to a predetermined amount. For this reason, the controller 6, the current supply device 5, the motor 4,
The power supply to 9 is never turned off.

At this time, while the motors 4 and 9 are operating but the pachinko balls are not passing, the collection pipe 1
The level of the upper end of the abrasive 18 located on the side of the abrasive material storage tank 3 and the abrasive material storage tank 14 is located in the abrasive material storage tank 14, but in a load (operating) state, pachinko balls are supplied into the lifting pipe 1. For example, the level of the upper end portion of the abrasive 18 on the side of the collection pipe 13 and the abrasive storage tank 14 rises to the inside of the collection pipe 13. Therefore, in the loaded state, the abrasive 18 individually falls freely up to a predetermined level position of the recovery pipe 13, and moves below the level as a lump at a lower speed than the free fall.

At this time, for example, if a part of the abrasive group moving downward as a lump adheres to the collection pipe 13 due to static electricity and does not move downward, the abrasive 18 falling sequentially from the upper side Will not move downward merely by being sequentially deposited on the group of abrasives that have been stuck and stopped. Then, the upper end surface of the abrasive group which does not move downward is gradually displaced upward, but when it moves to the position of the first proximity switch 17, the first proximity switch 17 continuously detects the object with respect to the controller 6. The signal of is supplied.

When the object detection signal is continuously input for the time t ₁ , the controller 6 turns off the power supply to the motors 4 and 9 from the current supply device 5 and stops the rotation of the spring 2. As a result, the polishing is temporarily interrupted, and the upper end surface of the group of abrasives attached to the collection pipe 13 is prevented from rising to the collection hopper 12 and further to the position of the cage portion 10b and overflowing. This prevents the abrasive 18 from flowing into the ball storage tank 11 and prevents clogging on the pachinko machine side.

When the group of abrasives stuck to the collection hopper 12 drops for some reason such as vibration, that is, when the upper end surface of the group of abrasives is displaced below the first proximity switch 17, The first proximity switch 17 continuously supplies the controller 6 with a signal indicating that an object has not been detected. Then, the controller 6 operates the motors 4 and 9 through the current supply device 5, and the polishing is restarted.

Further, the motor 4 and 9 t position time, also t ₂ hours after stopping, the signal of the object undetected by continuous lighting signal for when it is supplied to the controller 6 overflow warning of monitor panel 21 Sent to the control unit, an overflow warning is displayed on the monitor panel 21.

Also at this time, the abrasive group attached to the collection hopper 12 falls, and the upper end surface of the abrasive group becomes the first surface.
Is displaced below the proximity switch 17, an overflow warning light-off signal is supplied from the controller 6, and the overflow warning display on the monitor panel 21 is turned off to indicate that the switch has been restored.

Here, the same processing as described above is performed even when the overflow state occurs because the absolute amount of the abrasive 18 in the polishing apparatus is too large. In addition, due to an error at the time of replacement of the abrasive 18 regularly, the amount of the abrasive 18 in the polishing apparatus may be smaller than a predetermined amount, and the upper end of the abrasive 18 in the abrasive storage tank 14 may be used. Second level
When the sensor is displaced below the proximity sensor position, the detection by the second proximity switch 19 continues in an object non-detection state,
Alternatively, object detection and object non-detection are repeated. If this state continues for the time t ₃ , the controller 6 determines that the supply of the abrasive is necessary, and the warning display of the abrasive supply request is lit on the monitor panel 21 based on the signal from the controller 6. Further, if the above state continues for the time t ₄ , the motors 4 and 9 are stopped by a signal from the controller 6 and the polishing is interrupted.

As a result, it is possible to prevent an unnecessary flaw or the like from being left on the pachinko ball due to polishing in a state where the abrasive 18 is insufficient. Here, in the above description, both the overflow state and the shortage state of the abrasive 18 are detected to stop the polishing operation and to perform a warning display process on the monitor panel 21. The processing may be performed by detecting only one of the states.

In the above-described embodiment, a warning is displayed after the motors 4 and 9 are stopped as shown in FIG. 5 during the overflow processing, but a waiting time of t ₂ in FIG. 5 is provided. Instead, the warning display of the overflow may be performed simultaneously with the detection of the possibility of the overflow of the abrasive 18, that is, simultaneously with the stop of the motors 4 and 9, or the process for displaying the warning for the overflow may be omitted. . Conversely, only the process for displaying the warning for the overflow may be performed without performing the process of stopping the motors 4 and 9. When performing only the process for displaying a warning,
It is possible to avoid interruption of the polishing process for pachinko balls due to malfunction or failure of the sensor.

[0042] In the above embodiment, during the processing of insufficient abrasive, as shown in FIG. 7, is performed to stop the motor 4 and 9 after the warning display, but waiting for t ₄ in FIG. 7 The motors 4 and 9 may be stopped at the same time as the detection of the possibility of the shortage of the abrasive 18, that is, at the same time as the warning is displayed, without providing time.

Further, the shortage of the abrasive 18 is detected and the motors 4 and 9 are stopped together with the display of the supply of the abrasive, and the polishing is stopped. However, the processing for automatically stopping the polishing is not performed. The operator who notices the displayed indication may perform manual stop or the like. In this case, interruption of the ball polishing process due to malfunction or failure of the sensor can be avoided.

In the above-described embodiment, only one first proximity switch 17 is set. However, two first proximity switches may be arranged at a predetermined distance above and below for processing. In this case, for example, the motors 4 and 9 are stopped when the abrasive is accumulated up to the upper first proximity switch, and the motor is stopped when the upper end of the abrasive accumulated below the lower second proximity switch is lowered. 4 and 9 are restarted. Alternatively, if the abrasive is deposited to the lower second proximity switch position, only the alarm processing is performed, and if the abrasive is deposited to the upper second proximity switch, the motors 4 and 9 are stopped to stop the polishing. To

The same applies to the second proximity switch 19. Also, in a normal operation state of the polishing apparatus, generally,
Since the upper end position of the deposited abrasive 18 overflows from the abrasive storage tank 14 and is located in the collection pipe 13, the second proximity switch 19 for the steady operation state is set to the lower part of the collection pipe 13. To determine the shortage of the abrasive 18.

In the above embodiment, a proximity switch such as a dielectric switch is used for the overflow detection sensor and the abrasive detection sensor. However, the present invention is not limited to this. Other known sensors such as a microswitch may be used as long as they can be detected.

In the above embodiment, the monitor panel 2
Although the warning means is constituted by the display of 1, the warning of the warning means for calling attention is not limited to the panel display, and may be performed by a warning sound or the like.

The above-mentioned polishing apparatus is provided with a lifting aid pipe 7.
However, the present invention is not limited to this. For example, a device having a collection ball tank directly below the discharge pipe 1 may be used. Further, a cassette type polishing apparatus in which a cassette for replacing the abrasive 18 is mounted in the middle of the collection pipe 13 may be used. In short, any device having a device configuration in which the circulating abrasive 18 moves downward through the collection pipe 13 can be employed.

[0049]

As described above, when the apparatus for polishing a game medium according to the first aspect of the present invention is employed, the abrasives are stuck in the abrasive return path and the abrasives are sorted. This has the effect that overflow to the side is reliably prevented. This prevents the abrasive from flowing into the pachinko machine, and eliminates the need for long-term recovery work due to the abrasive entering the pachinko machine.

At this time, when the invention described in claim 2 is adopted, the possibility of the overflow can be notified to the operator, and there is an effect that the operator can perform early processing.

Further, when the invention according to the third aspect is adopted, the shortage of the abrasive is reliably detected and the operator is alerted, so that there is an effect that early processing such as replenishment of the abrasive can be performed.

At this time, when the invention described in claim 4 is adopted, the polishing is reliably stopped before the abrasive material is completely in short supply, and the scratches on the game medium are prevented.

[Brief description of the drawings]

FIG. 1 is a schematic diagram showing a configuration of a polishing apparatus according to an embodiment of the present invention.

FIG. 2 is a sectional view showing an arrangement of a first proximity switch.

FIG. 3 is a cross-sectional view showing an arrangement of a second proximity switch.

FIG. 4 is a diagram illustrating an overflow process in a controller according to the embodiment of the present invention.

FIG. 5 is a diagram showing a time chart of an overflow process according to the embodiment of the present invention.

FIG. 6 is a diagram illustrating an abrasive shortage process in a controller according to the embodiment of the present invention.

FIG. 7 is a diagram showing a time chart of an abrasive shortage process according to the embodiment of the present invention.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 Lifting pipe 2 Spring 4 Upper motor 5 Current supply device 6 Controller 7 Lifting auxiliary pipe 8 2nd spring 9 Lower motor 10 Sorting device 10b Sink part 12 Collection hopper 13 Collection pipe (abrasive return path) 14 Abrasive material storage Tank (abrasive storage section) 15 Ball collection tank 17 First proximity switch (overflow detection sensor) 18 Abrasive material 19 Second proximity switch (abrasive detection sensor) 20 Supply gutter 21 Monitor panel 21 (warning means)

Claims (4)

[Claims] 1. A pumping pipe for agitating and mixing an abrasive and a game medium by an agitating and pumping device disposed therein, and a pumping medium connected to an upper portion of the pumping pipe to sequentially feed a game medium. A sorting device that separates the abrasive material and drops the abrasive material downward, an abrasive return path that guides the abrasive material separated by the sorting device downward, and an abrasive material that communicates with a lower portion of the abrasive material return path to remove the abrasive material. A polishing apparatus for a game medium, comprising: an abrasive accommodating portion that accommodates and communicates with a lower portion of the pumping pipe; and an actuator that drives the agitating and pumping device. An overflow detection sensor for detecting the accumulation of the abrasive, and based on the detection signal of the overflow detection sensor, when it is determined that the abrasive has accumulated to the sensor installation position, the power supply to the actuator is turned off. The polishing apparatus of game media, characterized in that it comprises a controller for stopping the stirring pumped device Te. 2. The apparatus according to claim 1, further comprising alarm means for generating an alarm for calling attention, wherein the controller supplies an alarm signal for calling attention to the alarm means when turning off the power supply to the actuator. The polishing apparatus for a game medium according to claim 1, wherein 3. A pumping pipe for agitating and mixing an abrasive and a game medium with an agitating pumping device disposed inside the pumping pipe, and a game medium communicated with an upper portion of the pumping pipe and sequentially fed. A sorting device that separates the abrasive material and drops the abrasive material downward, an abrasive return path that guides the abrasive material separated by the sorting device downward, and an abrasive material that communicates with a lower portion of the abrasive material return path to remove the abrasive material. In a ball polishing apparatus comprising: an accommodating material accommodating portion that communicates with a lower portion of the pumping pipe; and an actuator that drives the agitating / pumping device, an alarm unit capable of generating an alarm for calling attention; An abrasive detection sensor provided at the lower part of the abrasive return path or in the abrasive storage to detect the presence or absence of abrasive, and based on a signal from the abrasive detection sensor, determine that the amount of abrasive is smaller than a required amount. Then the above alarm means The polishing apparatus of the game medium characterized by comprising a controller supplying a reminder alarm signal against. 4. The game according to claim 3, wherein the controller turns off a power supply to the actuator to stop the stirring and lifting device when supplying a warning signal to a warning means. Media polishing equipment.