JP2000079266A - Medal polishing machine - Google Patents

Abstract

PROBLEM TO BE SOLVED: To enable the reduction of the device and the incorporation of the device into a medal transporting path by eliminating the need for a housing vessel and to obtain high reliability and to surely remove stains by sufficient wiping-away force by not using pellets, hot water, etc. SOLUTION: A circumferential circuit 9 is formed by stretching an endless belt 7 on parallel rollers 5a and 5b in a horizontal direction. A first polishing and transporting means 3 and a second polishing and transporting means 19 having the front surface part of the circumferential circuit 9 as a medal transportation face 11 are composed. Medals inverted inside out by dropping from the transporting direction terminal of the first polishing and transporting means 3 are received by the medal transportation face 1 of the second polishing and transporting means 19. A cloth material 37 is arranged to face a portion of the medal transportation face 11 of the first polishing and transporting means 3 and the second polishing and transporting means 19 apart a spacing. The first polishing and transporting means 3 and the second polishing and transporting means 9 are provided with a pressing means for pressing the cloth material 37 atop the medals 15 transferred by the metal transportation face 11.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a medal polishing machine for cleaning a game medium used in a game machine such as a slot machine.

[0002]

2. Description of the Related Art Dust generated by contact between medals or contact between a medal and a device, and fats and oils by hand adhere to medals which are game media such as slot machines. These dusts and oils adhere to the surface of the medal as dirt that cannot be easily removed by using the medal for a long time. Conventionally, a dedicated dirt removing device has been used to remove such dirt.

[0003] The dirt removing device includes, for example, a self-cleaning type dirt wiping device. This dirt wiping machine is provided with a falling path for vertically dropping medals in a medal conveyance path, and a dirt wiping unit that comes into contact with the medals is projected on an inner wall of the falling path, and dirt is wiped on medals falling on the falling path. Abut the means to wipe off any dirt attached to the medal surface. Further, as the dirt removing device, for example, there is a polishing machine that rubs off dirt on a medal surface by polishing. This polishing machine is
A micro-cylindrical abrasive made of nylon or the like (referred to as pellets) and a medal are put into a container together, and the dirt adhered to the medal is scraped off with the pellets while being rotated by a spiral stirrer. Furthermore, the dirt removing device includes:
There is a washing machine that removes dirt using hot water. This washing machine puts medals in a washing tank filled with hot water, chemically decomposes and removes dirt using a detergent, removes the detergent by post-washing, and dries the wet medals by heating.

[0004]

However, in the self-cleaning type dirt wiping machine described above, the medal falls by its own weight, and only an instantaneous and small contact force is brought into contact with the wiping means. Dirt could not be removed. Further, the contact surface between the wiping means and the medal is affected by the posture of the medal at the time of falling, and dirt on the front and back sides cannot be reliably removed.

[0005] A grinding machine using pellets requires a container for containing medals and pellets, and further requires a stirrer for mixing these components.
There was a drawback that the noise increased. In addition, there was a problem that the pellets entered the apparatus during stirring or separation of the medals and the medals, resulting in malfunction. Further, since a large number of medals are simultaneously placed in the container for purification, the operation cannot be performed in synchronization with the medal transport operation, and it is impossible to incorporate the medals into the medal transport path.

A washing machine using hot water requires a washing tank like the above-mentioned polishing machine using pellets, so that the apparatus becomes large and complicated process control such as immersion in a washing liquid and drying is required. However, there has been a drawback that the apparatus cost is high. In addition, in the case of this apparatus, since a large number of medals are simultaneously put into the cleaning tank to purify the medals, the medals cannot be synchronized with the medal transport operation, and thus cannot be incorporated into the medal transport path. Furthermore, since hot water is used, there is a problem that moisture enters the apparatus and causes malfunction.

[0007] The present invention has been made in view of the above circumstances, and by eliminating the need for a storage tank, it is possible to reduce the size of the apparatus, to incorporate it into the medal transport path, and to use pellets.
High reliability is obtained by not using hot water, etc.
It is an object of the present invention to provide a medal polishing machine capable of reliably removing dirt with a sufficient wiping force.

[0008]

According to a first aspect of the present invention, there is provided a medal polishing machine according to the present invention, wherein an endless belt is stretched over horizontal parallel rollers to form a peripheral circuit.
A first polishing and conveying means having the upper surface of the peripheral circuit as a medal conveying surface, and having the same configuration as the first polishing and conveying means, and having the same structure as the first polishing and conveying means falling from the end of the first polishing and conveying means in the conveying direction, whereby the front and back are reversed. A second polishing and conveying means for receiving the set medals on the medal conveying surface, and a medal locking portion provided on the medal conveying surface of the first polishing and conveying means and the second polishing and conveying means for locking the medals on the medal conveying surface; A cloth material disposed in parallel with a part of the medal transport surface in the first polishing transport unit and the second polishing transport unit with a gap therebetween in parallel, and the medal transport surface locked by the medal locking unit. A pressing means for pressing the cloth material is provided on the upper surface of the medal to be transferred.

In this medal polishing machine, when the medal reaches the polishing section on which the cloth material of the first polishing and conveying means is disposed, one surface, which is the upper surface mounted on the medal conveying surface, passes through the cloth material. The medal is transferred while sliding on the pressing means, and dirt fixed to one surface of the medal is wiped off by the cloth material. The medals that have fallen from the end of the first polishing conveyance means in the conveyance direction are:
The front and the back are reversed, and one surface becomes the lower surface and the other surface becomes the upper surface, and is placed on the medal transport surface of the second polishing and transporting means. The medals placed on the second polishing and conveying means are transferred by the polishing section while the other surface is in sliding contact with the pressing means via the cloth material, as in the case of the first polishing and conveying means, and is transferred to the other surface of the medal. The adhered dirt is wiped off by the cloth material.

According to a second aspect of the present invention, in the medal polishing machine, the cloth material is formed of a strip-shaped long material, and the base end of the cloth material is wound in a roll shape, while the front end is fixed to a winding roller. Each time a predetermined amount of dirt adheres from a medal, the cloth material is taken up by the take-up roller, and a new portion of the cloth material is sequentially arranged to face a part of the medal transport surface.

In this medal polishing machine, when a predetermined amount of stained cloth material is wound up by a take-up roller by a predetermined length, the stain-free portion is replaced by the stain-free portion. Without replacing the entire fabric
A new part can be easily arranged facing the medal transport surface.

According to a third aspect of the present invention, in the medal polishing machine, the first polishing and transporting means and the second polishing and transporting means are arranged at a position upstream of the position where the cloth material is disposed in the medal transporting direction, in the same direction as the circumferential direction of the endless belt. A reverse rotation roller that rotates in the direction is disposed opposite to the medal transport surface with a gap corresponding to the thickness of one medal.

In this medal polishing machine, when the medal reaches the reverse rotation roller, the medal contact portion of the reverse rotation roller moves in the direction opposite to the moving direction of the medal. The medals other than the lower layer are removed rearward by the reverse rotation roller, and only the lowest layer medals locked by the medal locking portion are transported through the reverse rotation roller.

[0014]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Preferred embodiments of a medal polishing machine according to the present invention will be described below in detail with reference to the drawings.
FIG. 1 is a conceptual diagram illustrating a schematic configuration of a medal polishing machine according to the present invention, and FIG. 2 is a partially enlarged view illustrating a medal reversing operation.

The medal polishing machine 1 has a first polishing and conveying means 3
Is provided. The first polishing and conveying means 3 constitutes a peripheral circuit 9 by stretching an endless belt 7 around a pair of rollers 5a and 5b parallel in the horizontal direction. The first polishing and conveying means 3 uses the upper surface of the peripheral circuit 9 as a medal conveying surface 11. The circuit 9 rotates around in the same direction as the rollers 5a and 5b rotate counterclockwise. The first polishing and conveying means 3 according to this example is inclined such that the downstream side (the left end side in FIG. 1) in the medal conveying direction is higher.

A medal slot 13 is provided above the medal transport surface 11 on the upstream side of the first polishing and transporting means 3 in the medal transport direction (the right end in FIG. 1). The medal insertion slot 13 supplies the inserted medal 15 onto the medal transport surface 11. The supplied medals 15 are placed on the medal transport surface 11 with one of the front and back faces up.

On the outer peripheral surface of the endless belt 7, crosspieces 17 as medal locking portions are provided at equal intervals in the circumferential direction. The interval between the bars 17 is set to be at least larger than the diameter of the medal 15 to be conveyed. Further, the height of the bar 17 projecting from the medal transport surface 11 is smaller than at least the thickness of the medal 15. The medals 15 on the medal transport surface 11 are transported while being locked so as not to slide on the medal transport surface 11 with the rear portion in the transport direction hitting the crosspiece 17. Note that the medal locking portion may be a protrusion, a groove, a concave portion, or the like, in addition to the crosspiece 17 according to this example.

Below the first polishing and conveying means 3, a second polishing and conveying means 19 is provided. Second polishing transport means 19
Has the same configuration as the first polishing and conveying means 3. That is, the endless belt 7 is stretched around a pair of rollers 5a and 5b parallel in the horizontal direction to form the peripheral circuit 9, and the upper surface of the peripheral circuit 9 is the medal transport surface 11. Second polishing transport means 19
Are arranged below the first polishing and conveying means 3 with a predetermined interval W (see FIG. 2) so that the medal conveying surfaces 11 are parallel to each other.

Accordingly, the medals 15 that have fallen from the end of the first polishing and conveying means 3 in the conveying direction are placed on the medal conveying surface 11 of the second polishing and conveying means 19. The medal 15 that has dropped from the first polishing and transporting means 3 is turned upside down and rests on the medal transporting surface 11 of the second polishing and transporting means 19, as will be described in detail in the description of the operation described later. At the predetermined distance W between the first polishing and transporting means 3 and the second polishing and transporting means 19, the dropped medals 15 are turned upside down exactly on the medal transporting surface 11 of the second polishing and transporting means 19. Set to distance.

Each of the rollers 5a and 5b of the first polishing and conveying means 3 and the second polishing and conveying means 19 is rotatably supported at both ends by an integrated apparatus frame 21. A drive motor 25 is attached to the device frame 21 via a bracket 23. The rotation drive shaft 25a of the drive motor 25 is arranged in the same direction as the axis of the rollers 5a, 5b.

A drive pulley 27 is fixed to a drive shaft 25a of the drive motor 25. A driven pulley 29 is fixed to the shaft end of the roller 5b of the second polishing and conveying means 19. A driven pulley 31 is fixed to the shaft end of the roller 5a of the first polishing and conveying means 3. A first belt 33 is stretched between the driving pulley 27 and the driven pulley 29. Driven pulley 2
A second belt 35 is stretched between 9 and the driven pulley 31. Therefore, the rotation of the driving pulley 27 is transmitted from the second polishing and conveying means 19 to the first polishing and conveying means 3 via the first belt 33 and the second belt 35.

A cloth material 37 is provided on a part of the medal transport surface 11 in the first polishing transport means 3 and the second polishing transport means 19.
Are arranged facing each other with a gap. The cloth material 37 according to this example is formed of a strip-shaped long material. The cloth material 37 has a base end wound around a feed roller 36 in a roll shape, and a front end fixed to a take-up roller 38. The cloth material 37 is guided by a plurality of auxiliary rollers 39 and arranged on a part of the medal transport surface 11 in the first polishing transport means 3 and the second polishing transport means 19. As the cloth material 37, a fibrous body such as a canvas or a canvas can be used.

The first polishing and conveying means 3 and the second polishing and conveying means 19 are provided with pressing means 41 for the cloth material 37.
The pressing means 41 is disposed on the opposite side of the endless belt 7 with the cloth material 37 interposed therebetween. The pressing means 41 according to this example includes:
The pressing portions 43 are provided at equal intervals in the medal conveyance direction. The tip of a support bolt 45 is screwed into each pressing portion 43. The support bolt 45 is inserted through a hole (not shown) of a bracket 47 fixed to the device frame 21. A compression spring 49 is provided between the pressing portion 43 and the bracket 47. Accordingly, the pressing portion 43 projects the head of the support bolt 45 against the bracket 47 by the extension force of the compression spring 49, and projects toward the endless belt 7 side. That is, the pressing portion 43 receives the pressing force from the endless belt 7 side, thereby compressing the compression spring 49 and moving to the bracket 47 side.

The pressing means 41 can change the distance between the bracket 47 and the pressing portion 43 by rotating the support bolt 45 with respect to the pressing portion 43. Thereby, the gap size between the cloth material 37 and the medal conveying surface 11 can be adjusted.

A reversing roller 51 is provided on each of the first polishing and conveying means 3 and the second polishing and conveying means 19, on the upstream side in the medal conveying direction from the position where the cloth material 37 is arranged. The reverse rotation roller 51 is disposed coaxially with the rollers 5a and 5b. The reverse rotation roller 51 is supported movably in a direction approaching and moving away from the medal transport surface 11. Therefore, the gap between the reverse rotation roller 51 and the medal conveyance surface 11 is variable. This gap is set to be slightly smaller than the thickness of the medal 15 when the gap becomes minimum. Reverse roller 5
1 is normally urged by a tension spring 53 in a direction to minimize the gap.

A driven pulley 55 is fixed to the shaft end of each reverse rotation roller 51. A third belt 59 is stretched around the driven pulley 55 via the driven pulley 31 fixed to the roller 5 a of the first polishing and conveying means 3.
In FIG. 1, 61 is a guide roller for changing the path of the third belt 59, and 63 is a tension roller for applying tension to the third belt 59. Therefore, each reverse roller 5
1, a driving force is transmitted from the roller 5a of the first polishing and conveying means 3 via the third belt 59.

Next, the medal polishing machine 1 constructed as described above.
The operation of will be described. When a drive voltage is applied to the drive motor 25 and the drive shaft 25a rotates counterclockwise, the roller 5b of the second polishing and conveying means 19 is driven via the drive pulley 27, the first belt 33, and the driven pulley 29. You.
Thereby, the endless belt 7 of the second polishing and conveying means 19 is
The orbiting operation starts in the counterclockwise direction.

At the same time, the second belt 35 and the driven pulley 31
, The roller 5a of the first polishing and conveying means 3 is driven. Thereby, the endless belt 7 of the first polishing and conveying means 3
Starts the orbiting operation in the counterclockwise direction. At the same time, the reverse rotation roller 51 is driven by the driven pulley 55,
It rotates counterclockwise via the third belt 59.

In this state, when a medal 15 is inserted from the medal insertion slot 13, the inserted medal 15 is placed on the medal transport surface 11 of the first polishing and transporting means 3. Medal 15
In the medal transport surface 1, the rear portion in the transport direction is
1 is moved to the left in FIG. When the transported medals 15 reach the reverse rotation roller 51, they push up the reverse rotation roller 51 against the urging force of the tension spring 53. At this time, since the contact portion with the medal 15 moves in the direction opposite to the moving direction of the medal 15 at this time, if a plurality of medals 15 overlap,
Only the lowermost medals 15 locked to the crosspiece 17 are transferred through the reverse rotation roller 51.

The medal 15 that has passed through the reverse rotation roller 51 is
The first polishing and transporting means 3 reaches the polishing section A where the cloth material 37 is arranged. The medal 15 arriving at the polishing section A is placed on the medal transport surface 11 and one of the upper surfaces (for example, the surface) pushes up the cloth material 37. Conversely, cloth material 3
7 is pressed against the medal 15 via the pressing portion 43 by the urging force of the compression spring 49. In this state, the medals 15 are locked to the crosspiece 17 and transported while slidingly contacting the plurality of pressing portions 43 via the cloth material 37. This gives medal 1
5 is wiped off by the cloth material 37.

The medal 15 having passed through the polishing section A falls from the end of the first polishing and conveying means 3 in the conveying direction and is received by the medal conveying surface 11 of the second polishing and conveying means 19. On this occasion,
As shown in FIG. 2, the front half of the medal 15 first comes off the endless belt 7 in the transport direction. When the medal 15 is further transported, the front half or more of the medal 15 in the transport direction comes off the endless belt 7, and the medal 15 falls around the center of gravity with a counterclockwise moment by the weight of the front part in the transport direction. Since the gap between the first polishing and conveying means 3 and the second polishing and conveying means 19 is set at the interval W where the front and back of the medal 15 are just reversed, the medal 15 is turned upside down and the one surface 15a Is the lower surface, the other surface (for example, the back surface) 1
5b becomes the upper surface and rests on the medal transport surface 11 of the second polishing transport means 19.

The medal 15 on the second polishing and conveying means 19
Is the reverse rotation roller 5 as in the case of the first polishing and conveying means 3.
1 transfers only the lowest medal 15. The medal 15 that has passed through the reverse rotation roller 51 is
The polishing part B reaches No. 9 polishing part B. Medal 1 that reaches polishing section B
5 is transferred through the cloth material 37 while the other surface is in sliding contact with the plurality of pressing portions 43, similarly to the case of the polishing portion A. Thus, the dirt fixed to the other surface of the medal 15 is wiped off by the cloth material 37. As a result, the dirt on both sides of the medal 15 is removed. The medal 15 from which the dirt has been removed falls from the end of the second polishing and conveying means 19 in the conveying direction and is stored in a storage box (not shown) or the like.

By removing dirt from a large number of medals 15, the cloth material 37 to which a predetermined amount of dirt has adhered is taken up by a take-up roller 38 for a predetermined length. As a result, the cloth material 37 is arranged such that a new portion is opposed to the medal transport surface 11 and the medal 1 is kept until a predetermined amount of dirt adheres again.
5. Wipe off dirt. This operation is repeated until all the winding rollers 36 at the base end of the cloth material 37 are sent out. When the cloth material 37 of the winding roller 36 is completely wound up by the winding roller 38, a new winding roller 36 is set, the tip of the cloth material 37 is fixed to the winding roller 38, and the same operation is performed again. Have them wipe off.

As described above, according to the medal polishing machine 1 described above, since the cloth material 37 is pressed against the medal 15 by the pressing means 41, dirt can be removed with a sufficient wiping force. Then, the medal 15 is generated by the first polishing and conveying means 3.
The dirt on one side of the medal 15 is removed, and the dirt on the other side of the medal 15 is removed by the second polishing and conveying means 19, so that the dirt on the front and back of the medal can be reliably removed.

Further, since a container or a bathtub for containing pellets is not required, the size of the apparatus can be reduced. In addition, since pellets and moisture do not enter the apparatus, malfunctions are less likely to occur, and The reliability of operation can be improved.

Further, since the dirt can be removed while transferring the medals 15, the purification can be performed in synchronization with the medal transport operation, as compared with the conventional apparatus for purifying by putting a large number of medals into the container at the same time. Road integration can be enabled. In other words, the medal polisher 1 can be used as either a dedicated machine that is installed alone and performs only polishing, or a built-in polisher that is incorporated in a medal transport system.

In addition, since a complicated purification step is not required unlike a polishing machine using a pellet or a cleaning machine requiring a cleaning tank, the cost of the apparatus can be reduced.

In the above-described embodiment, the case where the cloth material 37 is wound by the winding roller 38 has been described as an example. However, the medal polishing machine 1 according to the present invention is used every time the amount of stain adheres to a predetermined amount. The structure may be such that the cloth material 37 is exchanged and attached.

[0039]

As described above in detail, in the medal polishing machine according to the first aspect of the present invention, the cloth material is pressed against the medal by the pressing means, and the first polishing and conveying means is used to move one side of the medal to the second polishing and conveying means. Since the dirt on the other surface is removed by the means, the dirt fixed on the front and back surfaces of the medal can be reliably removed. Since a container or a bathtub for containing pellets is not required, the size of the device can be reduced, and the pellets and moisture do not enter the device, so that the reliability of the device operation can be improved. In addition, since the cleaning can be performed in synchronization with the medal transport operation, it can be incorporated into the medal transport path. Furthermore, since a complicated purification step is not required, the cost of the apparatus can be reduced.

According to the second aspect of the present invention, there is provided a medal polishing machine,
The cloth material to which a predetermined amount of dirt has adhered is taken up by a predetermined length by a take-up roller, and a new portion can be arranged to face the medal conveying surface, so that the cloth material can be easily managed.

According to the third aspect of the present invention, there is provided a medal polishing machine,
A reverse roller rotating in the same direction as the circumferential direction of the endless belt is disposed to face the medal transport surface with a gap corresponding to the thickness of one medal. For this reason, when a plurality of medals are transported in an overlapping manner, it is possible to eliminate the medals other than the lowest medal and to transport only one medal.

[Brief description of the drawings]

FIG. 1 is a conceptual diagram illustrating a schematic configuration of a medal polishing machine according to the present invention.

FIG. 2 is a partially enlarged view illustrating a medal reversal operation.

[Explanation of symbols]

1 ... Medal polishing machine, 3 ... First polishing transport means, 5a, 5b
... Roller, 7 ... Endless belt, 9 ... Circumferential circuit, 11 ... Medal transport surface, 15 ... Medal, 17 ... Bar (medal locking part), 1
9: second polishing and conveying means, 37: cloth material, 38: take-up roller, 41: pressing means, 51: reverse roller

Claims (3)

[Claims] An endless belt is stretched around rollers parallel to a horizontal direction to form a peripheral circuit, and a first polishing / conveying means having a medal conveying surface on an upper surface of the peripheral circuit; A second polishing / conveying means having the same configuration as the first polishing / conveying means and receiving a medal whose front and back are inverted by falling from a conveying direction end of the first polishing / conveying means on a medal conveying surface; and A medal locking portion provided on the medal transport surface of the polishing transport device for locking medals to the medal transport surface; and a gap between a part of the medal transport surface in the first polishing transport device and the second polishing transport device. And a pressing means for pressing the cloth material against an upper surface of the medal locked by the medal locking portion and transported by the medal transport surface. Polishing machine. 2. The method according to claim 1, wherein the cloth material is formed of a strip-shaped elongate material, and a base end of the cloth material is wound in a roll shape, while a front end is fixed to a winding roller, and a predetermined amount of dirt is removed from the medal. 2. The medal polishing machine according to claim 1, wherein the cloth material is taken up by the take-up roller each time it adheres, and a new portion of the cloth material is sequentially arranged to face a part of the medal conveying surface. 3. A reversing roller that rotates in the same direction as the circumferential direction of the endless belt, on the upstream side in the medal transport direction from the position where the cloth material is disposed in the first polishing transport unit and the second polishing transport unit. 2. The medal polishing machine according to claim 1, wherein the medal polishing machine is disposed so as to face the medal transport surface with a gap corresponding to the thickness of one medal.