JPH0121728Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a medal polishing machine used, for example, in medal game machines, pachinko machines, and the like.

During use, medals are touched by many people's hands, and the front and back surfaces get dirty, so it is necessary to constantly remove this dirt.

Conventionally, the method of removing dirt from medals was to immerse the medals in a cleaning solution and stir them, but this method takes a long time to dry if the cleaning solution is non-volatile, and if the cleaning solution is volatile, the medals It was extremely uneconomical because the quality of the liquid was impaired and the liquid itself was expensive.

In addition, since such cleaning requires large-scale equipment and installation space, very few medal cleaning devices have been provided to date, resulting in a decline in service that leaves players' hands dirty. Ta.

Therefore, in game parlors, there has been a desire for a device that has a simple structure and can easily remove dirt from medals.

Therefore, the present invention avoids the cleaning method using cleaning liquid and uses an abrasive material.The medals are mixed into granular abrasive materials such as synthetic resin, and the medals are repeatedly lifted and dropped using a vertical screw. It is designed to wipe away dirt with an abrasive material, and this will be explained with reference to the drawings.

As shown in FIG. 1, a cylindrical outer cylinder A is provided that stands on a disk-shaped board stand 10, and a cylindrical inner cylinder B that also stands on the board stand is provided inside this outer cylinder A. Inside this inner cylinder B, a rotary shaft 1 was vertically rotatably provided via a bearing 11 provided at the center of the substrate table 10 and a bearing 11' provided on the lid 3.

2 is a rotating tapered screw integrally formed with the rotating shaft 1 so as to lift the medal C and the abrasive material 8 upward while polishing the medal C, and has a shape that gradually becomes smaller in diameter upward. Installed vertically.

3 is a lid formed to enclose the medal C and abrasive material 8 inside the inner cylinder B, and is sealed to the top of the inner cylinder B. A bearing 11' is also provided at the center.

Reference numeral 4 denotes a medal insertion part provided on the outside of the outer cylinder A, which is connected to a medal sliding plate 12 that guides the medal C into the inner cylinder B.
The tip is connected to a medal drop opening 4' provided at the lower end of the inner cylinder B.

Further, a medal ejecting part 6' is provided on the outer side of the outer cylinder A on the opposite side to the medal inserting part 4, and a medal ejecting port 6 is further provided in the inner cylinder B at approximately the same position.

Reference numeral 5 denotes a spiral gutter having a small hole 15 at a separating part provided between the outer cylinder A and the inner cylinder B, through which the medals C are discharged to the outside and the abrasive material 8 is guided into the inner cylinder B again.

Further, a part of the abrasive 8 discharged from the medal discharge port 6 and the abrasive overflow port 14 is placed below the hollow part 16 between the outer cylinder A and the inner cylinder B to return it back into the inner cylinder B. The abrasive reducing plate 13 is provided in an inclined manner in the direction of the inner cylinder B, and the tip of the abrasive reducing plate 13 is connected to the inner cylinder B.
It is connected to an abrasive drop port 7 provided at the lower end of the abrasive material.

Reference numeral 9 denotes a motor for rotating the rotary shaft 1 with the tapered screw 2, and is connected to one end of the upper part of the rotary shaft 1.

Further, 14 is an abrasive overflow port provided at the upper part of the inner cylinder B.

When using the above structure, the motor 9 rotates the tapered screw 2 that is integrated with the rotating shaft 1, and the medal slot 4 rotates.
When a dirtier medal C is thrown in, the medal C slides down from the medal slot 4 onto the medal sliding plate 12 connected in an inclined manner to the inner cylinder B, and slides down from the medal drop opening 4' to the taper in the inner cylinder B. It falls onto the rear end of the shaped screw 2.

As shown in FIG. 4, the fallen medal C is stirred together with the abrasive material 8 by the tapered screw 2 integrated with the rotating shaft 1, and at the same time, the dirt is wiped off by the abrasive material 8. , the medals C are gradually lifted to the upper part of the inner cylinder B, but since the diameter of the tapered screw 2 gradually decreases upward, the medals C fall during the lifting process.

However, even if the medal C falls under its own weight from the tapered screw 2 which has a small diameter, the inner cylinder B
The interior is substantially filled with abrasive material 8, and the medals C are scooped up and transported one by one by the tapered screw 2.

Since the above operation is repeated many times, the medal C and the abrasive material 8 are agitated and polished, and the dirt on the medal C is completely wiped off by the abrasive material 8, and the inner cylinder B
The medals C are discharged from the medal discharge port 6 provided above, slide down the helical gutter of the separating section 5, and are stored in a container provided outside the medal discharge section 6'.

Furthermore, when the medals C are discharged from the medal discharge port 6, the abrasives 8 pushed up together with the medals C are discharged, but these abrasives 8 are in the hollow space between the outer tube A and the inner tube B. As an example of the separation part 5 provided in the hollow part 16, the abrasive material 8 falls under its own weight through the small holes 15 of a spiral gutter having a large number of small holes 15 to prevent the medals C from falling, The abrasive material 8 slides down on the abrasive material return plate 13 provided at the lower end, and is returned into the inner cylinder B through the abrasive material drop port 7.

Also, depending on the amount of medals C inserted into the inner cylinder B,
The abrasive material 8 overflows from the abrasive material overflow port 14 and is discharged, but the abrasive material 8 discharged from the medal discharge port 6
It is returned to the inner cylinder B in the same way.

The abrasive material 8 that has become dirty by wiping off the dirt on the medal C in this way can be taken out from the inner cylinder B and washed with a cleaning solution. Therefore, the abrasive material 8 can be used any number of times just by cleaning it. can do.

As an example, the specifications of the inner cylinder and screw are as follows: Inner cylinder: Diameter Φ165mm Screw: Bottom diameter 140mm Top diameter 70mm Rotation speed 77rpm Abrasive material: Made of nylon, spherical or cylindrical with a diameter or side of about 2mm to 5mm. Or a molding material granulated into a prismatic shape.Specific gravity: 1.14 Medal diameter: Φ25mm" The greatest feature of the present invention is that it has a tapered screw 2 that gradually becomes smaller in diameter upward.

In other words, in order to polish reliably with the conventional screwdriver shown in Figure 3, the polishing time must be extended, which makes the entire device large-scale and requires a large space. The idea is that since the diameter of the tapered screw 2 gradually decreases upward, the medals being lifted will fall through the gap between the tapered screw 2 and the inner cylinder B, be lifted again, and then fall again. Since the process is repeated, even if the distance of the tapered screw 2 is short, the time for the medal C and abrasive material 8 to be stirred and in contact is long enough to remove dirt from the medal C. Therefore, large-scale equipment and a large space are required. There is no such thing.

Medal C used in gaming machines, pachinko machines, etc.
Because of the intricate patterns engraved on both sides, it was difficult to remove the dirt easily. However, the present invention, which uses granular abrasive material 8 made of synthetic resin, has a simple structure and can be used reliably. Dirt on medal C can be removed.

The present invention can also be used to remove stains from coins as part of a service provided at banks, supermarkets, department stores, etc., and is highly practical as it can easily remove stains from medals and coins with complex patterns. It is a polishing machine.

[Brief explanation of the drawing]

FIG. 1 is a diagram showing an embodiment of the present invention, FIG. 2 is a perspective view of the present invention, and FIG. 3 is a diagram showing a conventional example.
FIG. 4 is a diagram showing the operating state of the present invention. 1...Rotating shaft, 2...Screw, 4...Medal insertion part, 4...Medal dropping port, 5...Separation part,
6...Medal ejection port, 6'...Medal ejection part, 7
... Abrasive material falling port, 10 ... Substrate stand, 12 ... Medal sliding plate, 13 ... Abrasive material reduction plate, 14 ... Abrasive material overflow port, A ... Outer cylinder, B ... Inner cylinder, C
...Shows a medal.

Claims (1)

[Scope of utility model registration request] An outer cylinder has a medal input part at the lower part of the outer surface and a medal ejection part at the upper part on the opposite side, a medal drop opening at the lower end of the outer surface, an abrasive overflow port at the upper end of the opposite side, and a medal discharge port below the outer cylinder. An inner cylinder with an abrasive drop port provided at the lower end thereof is erected on the substrate, an inclined medal sliding plate is attached to the medal input portion and the medal input opening, and a hollow space is formed between the outer cylinder and the inner cylinder. In order to separate the partially polished medals from the medal abrasive material made of synthetic resin, a separation gutter having a large number of small holes, the tip of which is located at the abrasive overflow port and the end of which is located near the medal discharge port, is installed in a spiral shape. The medals are wound around the disk and are discharged from the medal discharge port to the outside through the medal discharge port, and the medal abrasive material discharged from the abrasive overflow port and the medal discharge port is transported to the polishing machine provided below through the small hole of the separation gutter. The abrasive material falls onto the reducing plate, is returned to the inner cylinder through the abrasive drop port, and a driving part is provided at the top of the inner cylinder, and a rotary shaft to which a screw is attached, one end of which is connected to the driving part, is connected to the top and bottom of the inner cylinder. The screw is rotatably mounted in the inner cylinder via a rotation receiving part provided at the end, and the outer diameter of the screw is such that the outer diameter of the uppermost screw is approximately the radius of the outer diameter of the lowermost screw. A gradually tapered intermediate screw is formed, and the medal abrasive material is fed into the inner cylinder so that it is almost full at all times. A medal polishing machine characterized in that the medals are polished by adhering dirt on the medals to a medal polishing material by repeatedly stirring the medals so that the dirt is removed.