JP3844345B2 - Medal polishing equipment - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a medal polishing apparatus for polishing a contaminated medal used in a game.
[0002]
[Prior art]
Since medals used in gaming machines such as slot machines are contaminated by the fat of the player's hands, purple smoke in the atmosphere, machine oil, etc., it is necessary to polish them appropriately and clean them. As a method for winding a polishing cloth for polishing a medal, a method is known in which a motor is directly attached to a winding shaft of the polishing cloth, and the dirty polishing cloth is wound by driving the motor. However, if the dirty polishing cloth is wound up, the winding diameter increases, and even if the motor is driven for the same time, the winding width of the polishing cloth gradually increases. That is, there has been a problem that the amount of winding of the polishing cloth is gradually increased and the cost is increased with respect to the hole side.
[0003]
[Problems to be solved by the invention]
The present invention has been made to provide a medal polishing apparatus that solves the above-described conventional problems and that, when the motor is driven for the same time, always makes the winding amount of the polishing cloth a constant winding width. is there.
[0004]
[Means for Solving the Problems]
The medal polishing apparatus of the present invention made to solve the above-described problem is a polishing cloth for polishing a medal that is held and conveyed by a medal conveying belt stretched obliquely upward. A medal polishing apparatus provided with a polishing cloth feeding device for quantitatively shifting,
The medal transport belt is a pair of left and right endless belts, and a medal holding thin plate thinner than the medal thickness is arranged in a ladder step at regular intervals, and a medal receiving portion is configured.
Above the conveyor belt on the medal insertion side, a medal leveling member for leveling medals thrown on the conveyor belt is arranged.
The polishing cloth feeder includes a winding mechanism and a feed amount detection mechanism,
The winding mechanism consists of a polishing cloth winding shaft, a motor that drives the winding shaft, and a controller that drives the motor intermittently.
The feed amount detection mechanism includes a pitch roller that measures the feed amount of the polishing cloth, and a sensor that detects the number of rotations of the pitch roller and transmits the number of rotations to the controller .
The controller has a built-in timer that can set a motor stop time corresponding to the operating rate of the gaming machine .
The medal polishing apparatus according to claim 1, wherein the controller has a built-in timer capable of setting a motor stop time in accordance with an operation rate of the gaming machine .
[0005]
The medal polishing apparatus according to the present invention includes a polishing cloth feeding device, a winding shaft of the polishing cloth, a motor that drives the winding shaft, and a controller that intermittently drives the motor; Since it is equipped with a feed roller detection mechanism consisting of a pitch roller that measures the feed amount and a sensor that detects the rotation speed of the pitch roller and transmits the rotation speed to the controller, the winding amount of the polishing cloth can be reduced. A constant amount of winding width can be used to clean the medal cleanly without wasting abrasive cloth.
[0006]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, preferred embodiments of the present invention will be described with reference to the drawings.
[Composition of medal polishing equipment]
The configuration of the medal polishing apparatus 2 is shown in FIGS. The medal polishing apparatus 2 is provided with a medal conveying apparatus 30 attached to the support plate 20 and a set of polishing cloth feeding apparatus 26 attached to the support plate 27.
In the medal transport device 30, a motor 21, a drive pulley 22 driven by the motor 21, and three driven pulleys 22 a interlocking with the drive pulley 22 are arranged in a quadrangular shape at intervals. A pair of toothed endless belts 23 are stretched around these pulleys 22 and 22a. As shown in FIG. 3, teeth 221 are formed on the drive pulleys 22 and 22 a described above, and unevenness 231 is formed on the entire back side of the endless belt 23 so as to bite into the teeth 221. Therefore, the endless belt 23 can be reliably rotated even when a slight load is applied to the endless belt 23.
[0007]
Then, as shown in FIG. 4, a pair of endless belts 23 on the left and right sides are arranged in a ladder step shape at regular intervals with a thin plate 24 for holding a medal that is substantially U-shaped and thinner than the thickness of the medal. The belt 30a is configured. Both ends of the thin plate 4 are fixed to the endless belt 23, and a medal polishing receiving portion 25 is formed between the thin plate 4 and the front and rear thin plates 24. The receiving portion 25 has a size that allows a single medal to enter in the traveling direction, but is formed to have a width that allows a plurality of medals to enter in a direction transverse to the traveling direction. The medals can be held in a horizontal row and polished efficiently. The medal transport device 30 is provided with a discharge port 301 for feeding a polished medal.
[0008]
As shown in FIGS. 1 and 2, a polishing cloth feeding device 26 is disposed so as to face the medal conveying belt 30 a. In this polishing cloth feeding device 26, the polishing cloth 29 is held and stretched by a take-up shaft 28 and a discharge shaft 28 a disposed on the support plate 27. The winding shaft 28 is formed with a split groove, and the tip of the polishing pad 29 is inserted into the split groove and the polishing pad 29 is locked. Further, the polishing cloth 29 is supported by a pressing member 33 having a pressing plate 31 for pressing the polishing cloth 29 and guide rollers 32 at both ends, and sandwiches a moving medal in the receiving portion 25. Press and polish. Since the heater 311 is disposed on the back side of the holding plate 31, the polishing pad 29 can be heated to an appropriate temperature. In addition, a polishing liquid impregnation unit 39 is provided on the medal insertion side of the polishing cloth feeding device 26 so that the polishing liquid can be supplied to the polishing cloth 29. The instruction plate 27 includes a guide roller 34a for extending the polishing cloth 29 and a holding roller 35, and the medal polishing apparatus 2 includes a moving caster 2a at the lower portion.
[0009]
[Configuration of polishing cloth feeder]
FIG. 5 shows a configuration of the polishing cloth feed device 26. The polishing cloth feed device 26 includes a winding mechanism and a feed amount detection mechanism, and the winding mechanism includes a winding shaft 28 of the polishing cloth 29, The pitch roller 34 includes a motor 81 that drives the winding shaft 28 and a controller 83 that intermittently drives the motor 81, and the feed amount detection mechanism has a pitch plate 341 for measuring the feed amount of the polishing pad 29. And a sensor 82 that detects the rotational speed of the pitch roller 34 and transmits the rotational speed to the controller 83. The controller 83 has a built-in timer that counts the stop time of the motor 81, and the controller 83 is connected to the sensor 82 and the motor 81. The sensor 34 is a photo sensor, and counts the number of sheets passing through the pitch plate 341 when the pitch roller 34 rotates, and transmits the counted value to the controller 83. The controller 83 transmits a signal for driving the motor 81 intermittently based on the count value transmitted from the sensor 82.
[0010]
A control method when winding the polishing pad 29 will be described below.
When the winding shaft 8 is rotated by driving the motor 81 and the polishing pad 29 is displaced, the pitch roller 34 disposed in contact with the polishing pad 29 is rotated. The sensor 82 detects the feed amount of the polishing pad 29 by detecting the number of sheets passing through the pitch plate 341. When the pitch plate 341 passes a predetermined number of times, the controller 83 stops driving the motor 81 and starts the operation of the timer built in the controller 83. This timer is for counting the stop time of the motor 81 that is driven intermittently. When the game hall is crowded and the operation rate of the gaming machine is high, the stop time is short, and conversely the operation of the gaming machine When the rate is low, the stop time can be set longer. For example, if the stop time is set to 15 minutes, the motor 81 is driven and the polishing pad 29 is shifted when 15 minutes have elapsed after the motor 81 has stopped and the timer has started operating. When the sensor 82 detects the passage of a predetermined number of pitch plates 341, the motor 81 is stopped and the timer again counts the time. Thereafter, this operation is similarly repeated, and the polishing pad 29 can be intermittently shifted by a predetermined amount. In this apparatus, the four pitch plates 341 pass so that the winding shaft 28 rotates once and the polishing pad 29 moves 25 mm.
[0011]
[Medal polishing mechanism]
The used medals are put into a medal receiver 36 provided at the end of the medal polishing apparatus 2 as shown in FIG. Since the medal receiver 36 has a bottom surface 361 that is inclined downward toward the medal transport belt 30a, the medals inserted into the medal receiver 36 are stacked in multiple on the receiving portion 25 of the medal transport belt 30a. Sent in. The medal sent to the receiving portion 25 moves on the support plate 37 to the entrance of the stretched polishing cloth 29.
[0012]
Above the position where the medals are ejected from the medal receiver 36 and fed into the medal transport belt 30a, a pendulum-shaped medal leveling member 38 swinging back and forth, and the medal leveling member 38 and a slightly moving direction. A medal leveling member 38a, which is a rotating brush, is disposed at a distance. Accordingly, the medals sent to the receiving portion 25 are transported in a single state by the medal leveling members 38, 38a and pass between the polishing cloths 29 stretched opposite to each other. The front and back surfaces can be polished simultaneously. Then, by sending the polishing cloth 29 intermittently by the polishing cloth feeding device 26 described above, the medal can be polished finely while maintaining the polishing ability.
[0013]
【The invention's effect】
As described above, the medal polishing apparatus of the present invention includes a polishing cloth feeding device including a winding shaft of the polishing cloth, a motor that drives the winding shaft, and a controller that intermittently drives the motor. Because it is equipped with a take-off mechanism, a feed roller detection mechanism comprising a pitch roller for measuring the feed amount of the polishing cloth, and a sensor for detecting the rotation speed of the pitch roller and transmitting the rotation speed to the controller. The winding amount of the polishing cloth can always be a certain amount of winding width.
Therefore, the medal polishing apparatus according to the present invention has a great advantage that the medal can be beautifully polished without wastefully consuming the polishing cloth.
[Brief description of the drawings]
FIG. 1 is a front view of a main part of a medal polishing apparatus according to the present invention.
FIG. 2 is an enlarged view of a main part of the medal polishing apparatus.
FIG. 3 is a detailed view of a pulley and an endless belt.
FIG. 4 is a plan view of the medal transport device.
FIG. 5 is a detailed view of an abrasive cloth feeding device.
[Explanation of symbols]
2 Medal polishing device 28 Winding shaft 29 Polishing cloth 34 Pitch roller 81 Motor 82 Sensor 83 Controller

Claims (1)

A medal polishing device in which a medal transport belt is stretched obliquely upward and a polishing cloth feeding device is provided for quantitatively shifting the polishing cloth for polishing the medal held and transported by the belt. There,
The medal transport belt is a pair of left and right endless belts, and a medal holding thin plate thinner than the medal thickness is arranged in a ladder step at regular intervals, and a medal receiving portion is configured.
Above the conveyor belt on the medal insertion side, a medal leveling member for leveling medals thrown on the conveyor belt is arranged.
The polishing cloth feeder includes a winding mechanism and a feed amount detection mechanism,
The winding mechanism consists of a polishing cloth winding shaft, a motor that drives the winding shaft, and a controller that drives the motor intermittently.
The feed amount detection mechanism includes a pitch roller that measures the feed amount of the polishing cloth, and a sensor that detects the number of rotations of the pitch roller and transmits the number of rotations to the controller .
The medal polishing apparatus according to claim 1, wherein the controller has a built-in timer capable of setting a motor stop time in accordance with an operation rate of the gaming machine .

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