JP4573371B2 - Continuous coin washing machine - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a coin cleaning device for cleaning coins used in game machines and the like.
[0002]
[Background Art and Problems to be Solved by the Invention]
As a coin cleaning device for cleaning coins used in game machines and the like, there are a batch type cleaning device that inserts coins at a time for cleaning, and a continuous type cleaning device that continuously inputs coins for cleaning.
[0003]
The former has an advantage that coins of different sizes can be washed with the same apparatus, but there is a difficulty in handling handling such as taking out coins from the washing tank. In the latter case, various types of cleaning apparatuses have been developed in recent years as a means for eliminating the handling effort. The conventional continuous cleaning device is provided with a coin holding part such as a recess that matches the size of the coin on a container or transport member for cleaning, dehydration, drying, etc., and continuously sends coins. There is a problem that the coin cannot be washed as it is. Therefore, in order to wash coins of different sizes, it is necessary to prepare a plurality of washing devices, or to replace the washing and dehydrating and drying containers and transport members.
[0004]
In the above-described coin cleaning apparatus, a neutral or weak alkaline cleaning solution is usually used, and in order to improve cleaning efficiency, a polishing chip containing alumina or the like is often mixed in these cleaning solutions. When using polishing chips in the continuous cleaning apparatus, a pump or the like for circulating the polishing chips together with the cleaning liquid is required, and it is also necessary to separate the coins and polishing chips after cleaning. There is a problem that the apparatus becomes complicated and large.
[0005]
SUMMARY OF THE INVENTION An object of the present invention is to provide a continuous coin cleaning apparatus that can clean coins of different sizes as they are with a simple and compact configuration.
[0006]
[Means for Solving the Problems]
In order to solve the above-described problems, a continuous coin cleaning device of the present invention includes a hopper into which coins to be cleaned are inserted, and a spiral shape provided on the inner peripheral surface with coins supplied from the hopper at the supply end. The horizontal rotating drum that continuously feeds coins toward the discharge end with the guide vanes, the cleaning liquid tank in which at least the lower part of the rotary drum is immersed, and the coins fed from the discharge end of the rotary drum are continuously scooped up. Means, a first conveyor for transporting the scooped coins, a squeeze roll for removing the cleaning liquid adhering to the transported coins, and a second conveyor for transporting the coins from which the cleaning liquid has been removed to the coin take-out port. The structure which provided the brush for grinding | polishing in the internal peripheral surface of the rotating drum in which the said guide blade | wing was provided was employ | adopted.
[0007]
That is, the coins inserted from the hopper are supplied into a horizontal rotating drum provided with a polishing brush on the inner peripheral surface, and the coins immersed in the cleaning liquid at the lower part of the rotating drum are discharged to the discharge end with a spiral guide blade. By polishing with a polishing brush while feeding, the coin cleaning efficiency is improved with a simple configuration. In addition, since the washed coins are continuously picked up and conveyed to the squeeze roll, the washing liquid adhering to the coins is removed, so that coins of different sizes can be washed continuously.
[0008]
By providing a gate that forms a gap slightly larger than the thickness of the coin on the transport surface in the middle of the transport path of the first conveyor, the coins to be transported are further aligned by this gate, and the squeezing roll The overlapping of supplied coins can be eliminated, and the cleaning liquid adhering to the coins can be reliably removed.
[0009]
The conveyor path of the conveyor is inclined upward, and a plurality of water dropping holes smaller than the outer diameter of the coin are provided on the transport surface, so that the coin before being supplied to the squeeze roll is drained and dewatered by the squeeze roll. Efficiency can be increased. Further, since the cleaning liquid on the transport surface also falls from the water drop hole and the cleaning liquid does not accumulate on the transport surface, it is possible to prevent coins from sliding down the transport surface.
[0010]
By providing means for supplying warm air to the conveying path of the second conveyor, a separate drying box or the like is not required, and the coins can be finished and dried efficiently.
[0011]
A coin is dropped from above and supplied onto the conveying surface of at least one of the first and second conveyors, and a rotating roller that is driven to rotate in contact with the conveying surface of the conveyor is provided with the coin falling portion. By covering the supply end side of the transfer surface and providing it in parallel with the width direction of the transfer surface, coins falling from above are prevented from falling from the supply end of the conveyor, and the coins hanging on the rotating roller are transferred to the transfer surface. It can be sent out smoothly.
[0012]
A coin is dropped and supplied from above onto the conveyance surface of at least one of the first and second conveyors, and a wall is provided to cover both sides of the conveyance surface of the coin dropping portion. By forming the inner surface directly above overhanging over a height that is approximately larger than half the outer diameter of the coin, coins falling from above are prevented from falling from the side edge of the conveyor, and the conveying surface It is possible to prevent the coins leaning on the walls on both sides from falling on the transport surface, and preventing the coins from falling on the walls and staying while rolling on the transport surface.
[0013]
The conveying path of at least one of the first and second conveyors is formed so as to be inclined upward by 20 ° or more, and along the conveying surface, the pitch is substantially larger than half of the outer diameter of the coin. By providing the protrusion, the discharge end of the conveyor can be set at a high position due to the steep inclination of the transport path, and the coin outlet from the coin cleaning device can be provided at a high position, so that the coin can be easily taken out. Further, by making the transport path steeply inclined, the exclusive area of the conveyor can be reduced, and the cleaning device can be made compact. If the inclination of the conveyance path is 20 ° or more, coins may slide down on the conveyance surface, so that the sliding can be stopped by the protrusions and the coins can be smoothly conveyed even on the steeply inclined conveyance path.
[0014]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, embodiments of the present invention will be described with reference to FIGS. FIG. 1 is a front view of a coin cleaning device, FIG. 2 is a side view, and FIG. 3 is a perspective view showing only a portion related to the flow of coins 1.
[0015]
This coin cleaning device includes a coin-feeding hopper 2, a lateral hexagonal cylindrical rotating drum 3 to which coins 1 from the hopper 2 are supplied, a cleaning liquid tank 4 in which a lower portion of the rotating drum 3 is immersed, and a rotation A cart 5 for scooping up coins 1 discharged from the drum 3, a first conveyor 6 for transporting the coins 1 scooped up by the cart 5, and a cleaning liquid adhering to the coins 1 transported by the first conveyor 6 The squeezing roll 7 to be removed and the second conveyor 9 for conveying the coin 1 from which the cleaning liquid has been removed to the take-out port 8 are basically configured.
[0016]
A rotary blade 11 driven by a motor 10 is attached to the bottom of the hopper 2, and the coin 1 inserted into the hopper 2 is scraped up to the discharge port 12 by the rotary blade 11 and dropped. The coin 1 falling from the discharge port 12 is sent to the supply end of the rotating drum 3 through the chutes 13 and 14.
[0017]
The rotating drum 3 is chain-driven by a motor 15, and as shown in FIG. 4, spiral guide blades 16 are provided on the inner peripheral surface, and a synthetic fiber brush 17 is stuck between the guide blades 16. Has been. The coin 1 is cleaned while rolling the lower part of the rotating drum 3 immersed in the cleaning liquid, and the dirt deposits on the surface are polished and removed by the brush 17 and continuously sent to the discharge end by the guide vane 16. Falls into the cart 5 from the chute 18 attached to the lower side. The dirt deposits removed from the surface of the coin 1 are discharged into the cleaning liquid tank 4 through a large number of small holes 19 provided on the discharge end side of the rotary drum 3. The discharge end of the rotating drum 3 is enlarged in a trumpet shape so that the coin 1 is easily discharged to the chute 18.
[0018]
The wheel 5 is disposed in the vicinity of the discharge end of the rotary drum 3, and a rotational force is transmitted from the shaft of the rotary drum 3 by a gear 20. This carriage 5 is provided with inward ridges 21 at both ends, and fences 22 are attached to its inner circumferential surface at regular intervals in the circumferential direction. Windows 23 and 24 are opened. As shown in FIG. 5, an arcuate guide plate 25 is arranged along the inner peripheral surface of the upper half of the carriage 5 on the rotation rising side of the carriage 5. The coin 1 dropped inside is placed on the fence 22 and lifted along with the rotation of the carriage 5 and moves onto the outer peripheral surface of the guide plate 25 at a position exceeding 90 degrees from the bottom of the carriage 5. It is scooped up to the upper end of the guide plate 25 by the front-end | tip of the fence 22 along an outer peripheral surface. The coin 1 scraped from the upper end of the guide plate 25 falls onto the first conveyor 6 from a chute 26 attached below the coin 1.
[0019]
The first conveyor 6 is driven by a motor 27, and in the middle of the transport path 28, there are provided two gates 29 that form a gap slightly larger than the thickness of the coin 1 with the transport surface. . The coins 1 that are overlapped on the transport surface are transported in a single layer by these gates 29, and drop onto a squeeze roll 7 disposed below the discharge end of the first conveyor 6. The number of gates 29 may be one.
[0020]
The conveyance path 28 is inclined upward, and at the lower end side of the conveyance path 28, as shown in FIGS. Arranged in the direction, the upper side of the roller 30 and both sides of the conveying surface are shielded by partitions 31 and 32, respectively. The coin 1 falling from the chute 26 lands on the conveyance surface of the part surrounded by the partitions 31 and 32, and the coin 1 leaning on the roller 30 is defeated and conveyed on the conveyance surface by the rotation of the roller 30. Is done. In addition, a large number of water dropping holes 33 smaller than the outer diameter of the coin 1 are provided on the transport surface, and the coin 1 supplied to the squeeze roll 7 and the cleaning liquid adhering to the transport surface are drained. The dewatering efficiency of the squeeze roll 7 is increased, and the coin 1 is prevented from sliding down the transport surface.
[0021]
The squeezing roll 7 is made of acetic acid sponge having water absorption and elasticity, and is pressed horizontally and installed horizontally, and through a gear 34 attached to the rotating shaft of one squeezing roll 7 as shown in FIG. The first conveyor 6 is rotated by a motor 27 that drives the first conveyor 6. The coins 1 arranged in a layer on the first conveyor 6 fall between the squeezing rolls 7 one by one, and the cleaning liquid adhering to the surface is squeezed out. The coin 1 squeezed out of the cleaning liquid passes through the chute 35 and falls onto the second conveyor 9.
[0022]
The second conveyor 9 is driven by a motor 36, and its conveyance path 37 is steeply inclined upward. As shown in FIG. 7, protrusions 38 are provided at a constant pitch on the transport surface, and a partition 39 for preventing the coin 1 from falling is provided on the lower end side of the transport path 37. A notch 40 for allowing the projection 38 to pass therethrough is also provided at the lower end of the partition 39. The coin 1 falling on the transport surface from the chute 35 is caught by the protrusion 38 and transported upward along the transport path 37 having a steep slope, and the coin 1 leaning on the partition 39 is also sent out onto the transport surface by the protrusion 38.
[0023]
As shown in FIG. 8, walls 42 including a heat insulating material 41 are provided on both sides of the lower end portion of the conveying path 37, and the lower portion of the inner side surface 43 is formed to overhang. The coin 1 that falls from the chute 35 and hangs on the wall 42 is tilted inward by this overhang so that the coin 1 rolls in its posture and does not stay at the lower end of the conveyance path 37.
[0024]
A warm air heater 44 is disposed above the transport path 37, and warm air is supplied to the transport path 37 to dry the surface of the coin 1 having slightly moisture. The heat insulating material 41 is for preventing the wall 42 forming a part of the frame of the second conveyor 9 from being heated by the hot air heater 44. The coin 1 from which moisture has been completely removed falls from the upper end of the transport path 37 onto the chute 45 and is taken out from the takeout port 8.
[0025]
【The invention's effect】
As described above, in the coin cleaning device of the present invention, the coins inserted from the hopper are supplied into the horizontal rotating drum having the polishing brush provided on the inner peripheral surface, and immersed in the cleaning liquid at the lower portion of the rotating drum. Since the coin is polished with the polishing brush while being sent to the discharge end with the spiral guide blade, the coin cleaning efficiency can be enhanced with a simple configuration. In addition, since a gate that forms a gap slightly larger than the thickness of the coin on the transport surface is provided in the middle of the transport path of the first conveyor, the coins transported by this gate are further aligned. It is possible to prevent the coins supplied to the squeezing rolls from overlapping and to reliably remove the cleaning liquid adhering to the coins. Furthermore, since the means for supplying the warm air to the transport path of the second conveyor is provided, the coin can be efficiently finished and dried without a separate drying box or the like.
[Brief description of the drawings]
FIG. 1 is a front sectional view showing an embodiment of a coin washing device. FIG. 2 is a side sectional view of FIG. 1. FIG. 3 is a partially omitted perspective view of FIG. FIG. 5 is a partially cutaway front view of the main part of FIG. 1. FIG. 5 is a partially cutaway side view of the carriage of FIG. 1. FIG. 6a is a lower end of the first conveyor of FIG. FIG. 7 is a sectional view taken along line VI-VI in FIG. 7. FIG. 7 is a perspective view showing the lower end of the second conveyor in FIG. 1. FIG. 8 is taken along line VIII-VIII in FIG. Sectional view [Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Coin 2 Hopper 3 Rotating drum 4 Washing liquid tank 5 Carriage 6 Conveyor 7 Drawing roll 8 Taking-out port 9 Conveyor 10 Motor 11 Rotating blade 12 Outlet 13, 14 Chute 15 Motor 16 Guide vane 17 Brush 18 Chute 19 Small hole 20 Gear 21鍔 22 Fence 23, 24 Window 25 Guide plate 26 Chute 27 Motor 28 Transport path 29 Gate 30 Roller 31, 32 Screen 33 Hole 34 Gear 35 Chute 36 Motor 37 Transport path 38 Projection 39 Screen 40 Cut 41 Heat insulation 42 Wall 43 Inner side surface 44 Hot air heater 45 Chute

Claims (1)

  A horizontal hex cylinder in which coins from the hopper are supplied to the supply end, and coins are continuously fed toward the discharge end by a spiral guide blade provided on the inner peripheral surface. A rotating liquid drum, a cleaning liquid tank in which at least the lower part of the rotating drum is immersed, means for continuously scooping up coins fed out from the discharge end of the rotating drum, a first conveyor for transporting the scooped coins, A squeeze roll that removes the cleaning liquid adhering to the conveyed coins, and a second conveyor that conveys the coins from which the cleaning liquid has been removed to a coin take-out port. A polishing brush is provided, and coins supplied to the rotating drum are cleaned while rolling under the rotating drum immersed in the cleaning liquid tank. Continuous coin cleaning device dirt deposits on the surface were to be polished and removed by the abrasive brush.

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