JPH06142333A - Polishing device for medals - Google Patents

Abstract

PURPOSE:To prevent medals from remaining in a polishing device by a method where a abrasive material separating drum which has the pivotal axis in an approx. horizontal direction, and on the peripheral surface of which abrasive material passing through holes are formed, is provided to be rotatable with a motor, under a cylindrical pipe. CONSTITUTION:An abrasive material drops from abrasive material passing through holes 10b, and polished medals 7 only are recovered by a medal recovering passage 12. After the completion of a polishing work, spiral plates 3a, 3b in a cylindrical pipe 1 are reversed, and at the same time, a shutter 26 is opened while a abrasive material separating drum 18 is being turned. Then, the abrasive material and medals remaining in the cylindrical pipe 1 are fed in the opposite direction, and fed to the inside of the abrasive material separating drum 18 by a transfer passage 27 in order. Since a spiral protruding strap 14 turns in the abrasive material separating drum 18, the medals, together with the abrasive material, are fed in the advancing direction of the spiral, and the abrasive material drops from abrasive material passing through holes 13 on the drum peripheral surface, on the way. Then, the medals only are fed out from an outlet 25 at the other end side by a passage 33.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a polishing device for polishing coins and medals used in game machines such as throttle machines for cleaning.

[0002]

2. Description of the Related Art Conventionally, coins and medals of this kind (hereinafter referred to as medals) are repeatedly used, so that dirt adheres to the surface of the coins. The sensor and the sorting mechanism provided in the medal passage will become dirty and cause a failure. Therefore, at an appropriate time, medals are inserted, and a longitudinal spiral plate b such as a leaf spring is inserted into a vertically arranged cylindrical tube a as shown in FIG. 1, and one end of the spiral plate b is connected to an electric motor c. The inlet port d provided on the lower side portion of the cylindrical tube a by rotating
Therefore, polishing is performed by a polishing device of a type that introduces the medals f together with the polishing material e. In this apparatus, the medals f introduced into the cylindrical tube a from the introduction port d are sent together with the abrasive material e to the upper side of the cylindrical tube a, during which the abrasive material e and the medals f are kneaded. When the polishing material and medals are polished and discharged from the discharge port g provided on the upper side thereof, a separating means constituted by a multi-stage inclined perforated plate h provided connected to the discharge port g. The abrasive material e and the medals f are separated by i, and the abrasive materials are recovered and reused through an abrasive material recovery passage j having a funnel-shaped opening below, and the polished medals f are medals. It is recovered through the recovery passage k.

[0003]

When the polishing apparatus having the above-mentioned configuration is connected to an automatic vending machine or a game machine and the medals thrown into these machines are directly poured into the introduction port d for polishing, or automatic sales are performed. There is a case where metals are manually collected from a machine or the like and poured into the introduction port d for polishing. In any of these cases, when the polishing work is completed, the medals remain in the cylindrical tube a and the medals are left. When the type is a coin, there is an inconvenience that an accurate sales calculation cannot be performed due to the remaining number of coins, and even when it is a medal, there is an inconvenience that an accurate count cannot be performed due to the remaining number of coins.

An object of the present invention is to eliminate such inconveniences and to improve so that medals do not remain inside the polishing apparatus.

[0005]

According to the present invention, a longitudinal spiral plate rotated by an electric motor is provided in a cylindrical tube provided in a vertical direction, and medals are introduced to a side portion below the cylindrical tube together with an abrasive. An introduction port is provided, and a discharge port for discharging medals together with the abrasive is provided at an upper side portion of the cylindrical tube, and an abrasive recovery passage is provided at the discharge port through a separating means for separating the abrasive and medals. In a polishing device in which the and the medal collecting passage are connected, an abrasive material separating drum having an abrasive material transmitting hole formed in a peripheral surface and having a rotation center axis in a substantially horizontal direction is freely rotated by an electric motor below the cylindrical tube. Provided on the inner peripheral surface of the abrasive separating drum is one or a plurality of spiral protrusions extending from one end side to the other end side, and a shutter and a transfer path are provided on one end side of the abrasive separating drum. From the lower end of the cylindrical tube to the abrasive material. In order to achieve the above-mentioned object, an inlet for introducing the polishing medals into the abrasive separating drum is formed and an outlet for sending the polished medals from the inside of the abrasive separating drum is provided on the other end side. did.

[0006]

When the abrasive and the medals are introduced from the lower inlet of the cylindrical tube while rotating the spiral plate in the cylindrical tube by the electric motor, the medals are sent to the upper side of the cylindrical tube while being kneaded with the abrasive. After being kneaded and kneaded, the medals are discharged together with the abrasive from the discharge port above the cylindrical tube. Thereafter, the separating means separates the abrasive material from the medals, the medals are recovered through the medal recovery passage, and the abrasive material is recovered through the abrasive recovery passage. Although such an action is substantially the same as that of the conventional polishing apparatus, in the present invention, when the polishing work and the medals to be introduced into the inlet below the cylindrical tube are lost and the polishing operation is finished, The shutter is opened by rotating the spiral plate in the cylindrical tube in the reverse direction and rotating the abrasive material separating drum. By doing so, the abrasive and medals remaining in the cylindrical tube are sent in the opposite direction, and are sent into the inside through the inlet on the one end side of the abrasive separating drum. Since a spiral ridge is provided inside the abrasive separating drum, medals are sent together with the abrasive in the traveling direction of the spiral, during which the abrasive drops downward from the abrasive passage hole, Only the kind is sent out from the outlet on the other end side,
By receiving this in an appropriate container or the like, the medals in the cylindrical tube can be completely taken out.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described with reference to the accompanying drawings. In FIGS. 2 and 3, reference numeral 1 indicates a cylindrical tube of a polishing apparatus which is provided in a vertical direction with its lower portion slightly curved, and the inside of which is a cylindrical tube. Longitudinal spiral plates 3a, 3b are provided which are rotated in the same direction by an electric motor 2a provided on the upper side of the cylindrical tube 1 and an electric motor 2b provided on the lower side thereof. Below the cylindrical tube 1, there is provided an inlet 4 that opens upward for introducing medals together with an abrasive, and an outlet 5 for discharging medals together with the abrasive is provided on an upper side portion of the cylindrical tube 1. Is provided. Medals 7 such as medals and coins are loaded into the inlet 4 from a collection conveyor 6 connected to a game machine or a vending machine via a hopper 6a, and an upper cassette tank 8 is provided.
The polishing material 9 is put in from. Further, a separation means 10 for separating the abrasive material and medals, which is formed by providing a plurality of inclined plates 10a having abrasive material permeation holes 10b in succession to the discharge opening 5, is provided. Is the separating means 10
The abrasive material collecting passage 11 and the medal collecting passage 12 are connected via the. Such a configuration is not much different from the configuration of the conventional polishing apparatus for medals, and the medals 7 introduced into the cylindrical tube 1 together with the polishing material from the inlet 4 are the electric motors 2a,
It is also similar to the conventional one that the medals 7 whose surface is polished and washed by being sent upward while being kneaded by the spiral plates 3a and 3b rotated by 2b and being kneaded are discharged from the discharge port 5. However, with such a structure, there is a disadvantage that the medals 7 remain to some extent below the cylindrical tube 1 when the polishing operation is completed. Even if only the abrasive is continuously supplied in order to eliminate this residue, the granular abrasive has insufficient pushing force, and it is difficult to completely eject the medals in the cylindrical tube 1 from the outlet 5. In particular, when the medals 7 are coins, the coins remain in the polishing device, which causes a problem that accurate sales cannot be calculated.

In the present invention, in order to eliminate such inconvenience of remaining medals, as shown in FIG. 4 and FIG. 5, an abrasive permeation hole 13 on the peripheral surface is formed below the cylindrical tube 1. Further, an abrasive material separating drum 15 having a spiral protrusion 14 is provided on a hollow inner peripheral surface, and the abrasive material and medals in the cylindrical tube 1 are sent into the inside of the abrasive material separating drum 15 via a shutter 16, The polishing material was shaken off by the rotation of the drum 15, so that only the medals 7 could be taken out from the other end side of the drum 15. To further explain this, the abrasive separating drum 15 has a rotating shaft 18 that rotates about a rotation center shaft 17 in a substantially horizontal direction, and the rotating shaft 18 is rotated by a motor 20 via a timing belt or a chain 19. So as to support the inner surface of the plate 22 having a large number of abrasive permeation holes 13 formed in the shape of a hollow polygon by the radially extending arms 21 fixed to the rotary shaft 18 and having the spiral projection 14 formed thereon. Configured. The spiral projecting line 14 may be one line or plural lines. One end side of the abrasive separating drum 18 is closed by an end face plate 24 having a circular entrance 23 at the center, and the other end side is opened to form a medal outlet 25. When the shutter 16 provided at the lower end of the cylindrical tube 1 is pulled, the lower end of the cylindrical tube 1 opens, and the inlet 23 is opened from the end through the channel-shaped transfer path 27 therebelow.
A passage leading to the is formed.

Below the abrasive separating drum 15, a storage tank 2 for the abrasive which drops from the abrasive transmitting hole 13 on the peripheral surface thereof.
8 is provided, and the abrasive collected in this is provided in the abrasive recovery passage 1
In order to carry it up to 1, the cylindrical pipe 32 and the spiral plates 29a, 29b which are divided into an upper part and a lower part which rotate inside thereof are provided between the passage 11 and the storage tank 28, and an electric motor 30a for rotating these spiral plates. , 30b and an abrasive material transporting machine 3
1 is set. Numeral 33 is an inclined passage for transferring the medals 7 sent from the other end of the abrasive separating drum 18, and a suitable container is prepared below the end of the passage 32 to drop and collect the medals. And The shape of the abrasive separating drum 18 is not limited to a polygon, and may be a cylinder.

The operation of the illustrated apparatus will be described. The upper and lower electric motors 2a, 2b of the cylindrical tube 1 allow the spiral plates 3a, 3
By rotating b, the medals 7 from the collecting conveyor 6 and the abrasive material 9 from the cassette tank 8 are introduced into the cylindrical tube 1 through the hopper 6a and the introduction port 4. The spiral plates 3a and 3b rotating in the cylindrical tube 1 send the medals and the abrasive material to the upper side of the cylindrical tube 1 while kneading them, and discharge them from the discharge port 5. After that, the medals and the abrasive are separated from each other by the multi-stage inclined plate 10 having the abrasive transmission holes 10b of the separating means 10.
After passing over a, the abrasive drops downward from the abrasive transmission hole 10b and is recovered in the abrasive recovery passage 11, and only the polished medals 7 are recovered through the medal recovery passage 12. When the polishing work is completed, the spiral plates 3a and 3b in the cylindrical tube 1 are rotated in the reverse direction and the polishing material separating drum 18 is rotated to open the shutter 26, and the polishing material remaining in the cylindrical tube 1 is rotated. And send medals in the opposite direction,
The abrasive material is sequentially fed into the inside of the abrasive material separating drum 18 via the inlet 23 at one end side thereof via the transfer path 27. Since the spiral protrusion 14 rotates inside the abrasive separating drum 18, medals are sent together with the abrasive in the direction of the spiral movement,
On the way, the abrasive drops downward from the abrasive permeation hole 13 on the drum peripheral surface, and only the medals are sent out from the outlet 25 on the other end side through the passage 33. The medals sent out are received in a container or the like, transported to a counting counter, and calculated.

[0011]

As described above, according to the present invention, the longitudinal spiral plate is rotated in the vertical cylindrical tube to introduce the medals together with the abrasive from the lower introduction port, and the medal or the like is discharged above the cylindrical tube. In a polishing apparatus for separating abrasives discharged from an outlet and medals by a separating means, polishing in which an abrasives transmission hole is formed on the peripheral surface below the cylindrical tube and a spiral ridge is formed inside A material separation drum is rotatably provided, and an abrasive material and medals are introduced from the lower end portion of the cylindrical tube through a shutter and a transfer path into an inlet on one end side of the abrasive material separation drum and at the other end side of the abrasive material separation drum. Since the polished medals are sent out from the outlet, when the polishing work is completed, the abrasive separating drum can be rotated to take out the abrasive and the medals in the cylindrical tube, and the medals can be stored in the cylindrical tube of the polishing device. Calculation of sales etc. There is an effect such as that carried out correctly.

[Brief description of drawings]

FIG. 1 is a front view of a conventional example.

FIG. 2 is a front view of an embodiment of the present invention.

FIG. 3 is a side view of FIG.

FIG. 4 is a perspective view of a main part of FIG.

5 is a cross-sectional view of the main part of FIG.

[Explanation of symbols]

1 Cylindrical tube 2a, 2b Electric motor 3a,
3b spiral plate 4 inlet 5 outlet
7 Medals 9 Abrasives 10 Separation Means 11 Abrasives Recovery Passage 12 Medal Recovery Passages 13 Abrasive Transmission Holes 14 Spiral Ridges 15 Abrasive Separation Drums 16 Shutters
17 Rotation center axis 20 Electric motor 23 Inlet
25 exit 27 transfer path 28 storage tank 31 abrasive transfer machine

Claims (2)

[Claims] 1. A longitudinal spiral plate rotated by an electric motor is provided in a vertically arranged cylindrical tube, and an inlet for introducing medals together with an abrasive is provided at a lower side portion of the cylindrical tube and the cylindrical tube. A discharge port for discharging the medals together with the polishing material is provided on the upper side of the above, and the polishing material collecting passage and the medal collecting passage are connected to the discharging port through a separating means for separating the polishing material and the medals. In the polishing device, below the cylindrical tube,
An abrasive separating drum having a substantially horizontal rotation center axis and an abrasive transmitting hole formed on the peripheral surface thereof is rotatably provided by an electric motor, and one end side to the other end side is provided on the inner peripheral surface of the abrasive separating drum. Is provided with one or a plurality of spiral protrusions, and an abrasive and medals are attached to one end of the abrasive separating drum from the lower end of the cylindrical tube through a shutter and a transfer path. An apparatus for polishing medals, characterized in that an inlet for introducing into the inside is formed and an outlet for sending out the medals that have been polished from the inside of the abrasive material separating drum is provided on the other end side. 2. An abrasive transport for transporting the abrasive from the reservoir to the abrasive recovery passage, provided below the abrasive separating drum is a storage tank for the abrasive that drops from an abrasive passage hole in the peripheral surface of the drum. The medal polishing apparatus according to claim 1, further comprising a machine.