The specifications of PCT/SE2003/001475, filed on Sep. 23, 2003; 60/413,039, filed Sep. 24, 2002, and Swedish application no. 0202819-9, filed Sep. 24, 2002 are incorporated herein in their entirety, by this reference.
The present invention relates to a coin conditioning device and method for use in a coin processing apparatus.
Coin processing apparatuses are commonly found in places where there is a need for sorting and/or counting large quantities of coins. One common type of coin processing apparatus may comprise an input tray and a coin lifting device, also known as a “hopper”. The input tray is arranged for receiving a mass of coins that are to be sorted, and the coin lifting device is arranged for establishing an order, e.g. a sequential order, of the coins, such that they may be sorted in e.g. a coin discriminating device. After, or while, being sorted, the coins may be verified by a coin verification device to ascertain that they have the properties of valid coins.
Typically, the coin processing device also comprises a coin counting device for counting the coins and providing an output representing a value of the processed coins.
The components of the coin processing apparatus, such as the coin lifting device, the coin discriminating device, the coin verification device and the coin counting device, may be sensitive to non-coin matter, such as paper clips, dust, fluff, staples, buttons and other items that may accompany a mass of coins that have resided in e.g. a person's pocket or in a piggy bank. Since such non-coin matter may disturb, or even damage, the function of the components of the coin processing apparatus, it is desirable to have the non-coin matter removed prior to the mass of coin being processed by the coin processing apparatus. It should be noted that it is not an issue here to remove non-coin matter having essentially the shape of coins, such as tokens or non-valid (e.g. foreign) coins. Such non-coin matter is generally discriminated in a later step in the coin processing apparatus.
Various types of coin conditioning devices for conditioning or cleaning a mass of coins, prior to it being processed by the coin processing device, are known.
U.S. Pat. No. 5,482,916 discloses a coin conditioning device comprising a rotatable container, having perforated walls and vanes for causing the mass of coins to be conveyed forward through the container. The described coin conditioning device works like a screw tube conveyor, causing the mass of coins to tumble inside the conveyor, while non-coin matter is allowed to fall out of the container through the perforations in the walls.
WO 96/30877 discloses a similar, rotatable coin conditioning device, wherein the vanes are replaced by a screw conveyor that is arranged inside the perforated container.
It is desirable to provide a coin conditioning device, which is fast and which provides an even flow of coins to the components downstream of the coin conditioning device.
It is thus an objective of the present invention to provide a coin conditioning device which is fast and which provides an even flow of coins to the components downstream of the coin conditioning device.
The above-stated object is wholly or partly achieved by a device, a coin processing apparatus and a method according to the independent claims. Embodiments of the invention are set forth in the dependent claims, in the following description and in the appended drawings.
Thus, according to a first aspect of the invention, there is provided a coin conditioning device for separating non-coin matter from a plurality of coins. The coin conditioning device comprises a belt conveyor having a perforated conveyor belt, and a belt agitator, which is arranged for agitating the conveyor belt while said plurality of coins and said non-coin matter are being conveyed on said conveyor belt. In an embodiment of the coin conditioning device, the conveyor belt has a section that is upwardly inclined in the conveyor belt's principal direction of movement.
According to a second aspect of the invention, there is provided a coin processing apparatus for processing a plurality of coins, the coin processing apparatus comprising the coin conditioning device described above.
According to a third aspect of the invention, there is provided a method for conditioning a plurality of coins by separating non-coin matter from said plurality of coins. The method comprises conveying said plurality of coins, including said non-coin matter, on a belt conveyor having a perforated conveyor belt, while causing said conveyor belt to agitate, so as to cause at least some of said non-coin matter to fall through said perforated belt. In an embodiment of the method, the plurality of coins is conveyed on a perforated conveyor belt, which is upwardly inclined in its principal direction of movement.
A belt conveyor generally consists of an “endless” belt, which is arranged around two spaced-apart pulleys. The endless belt may be either a true endless belt or an elongate band, whose ends have been joined together, such as to form the “endless” belt.
The perforated conveyor belt according to the invention is a belt having a pattern of perforations or through holes, all of which being sufficiently small so as to prevent a coin of the smallest size that is to be processed from passing through them. The exact shape of the perforations may vary, as long as the smallest coins that are to be processed are not able to pass through them.
The conveyor belt's principal direction of movement is the direction in which the load side (typically the upper side) of the belt is moving during normal operation. Furthermore, the conveyor belt being inclined means that one of its ends is situated at a higher vertical level than the other end.
The conveyor belt is caused to agitate means that a sufficient agitation, such a vibration or shaking, is provided for disturbing the load of coins carried on the conveyor belt. The amplitude and direction of the agitation may be varied according to what is appropriate for the specific embodiment.
A coin processing apparatus is an apparatus capable of receiving a plurality of coins and performing a desired operation upon the coins, including, but not limited to, coin sorting, coin counting, coin discrimination and coin validation.
Embodiments of the invention will now be described with reference to the appended, exemplifying drawings.
a and 6b are top views of different perforation patterns for the conveyor belt of the coin conditioning device of
a-f are perspective views of alternative pulley designs.
a is a top view of an embodiment of a conveyor belt.
b is a cross sectional view of another embodiment of a conveyor belt.
From the input tray 3, the plurality of coins is typically fed to a coin conditioning device 2.
The coin conditioning device 2 will now be described in closer detail with reference to
The basic idea of the coin conditioning device 2 is that a plurality of coins are conveyed on a perforated conveyor belt 9, while the belt 9 is agitated, thus causing any non-coin matter, which is small enough to pass through the perforations, to be separated from the coins and to fall down into a dust collection tray 18.
The coin conditioning device 2 comprises first and second side walls 15a, 15b, which are arranged to form an elongate frame 5 for the coin conditioning device 2. The frame 5 may, at the input end 10 of the device 2, comprise a receiving funnel 6, or a similar device, for receiving the plurality of coins (not shown), which are fed from the input tray 3.
At each end of the frame 5, a first 7 and a second 8 pulley are arranged, respectively. In the embodiment of
A perforated conveyor belt 9 is arranged around the pulleys 7, 8. The conveyor belt 9 thus has an upper portion 9a, which is the upper part of the conveyor belt, i.e. the load bearing part. The surface of this upper portion 9a is arranged to move in a direction which is defined as the conveyor belt's principal direction of movement (DF). Furthermore, the conveyor belt has a lower portion 9b, which is located underneath the upper portion 9a and which consequently moves in the opposite direction (DB).
In the embodiments shown in
In the embodiments of
Between the upper and lower portions 9a, 9b of the conveyor belt 9, the removable dust collection tray 18 is arranged. The dust collection tray 18 may be arranged like a drawer. The tray 18 may further be arranged so as to cover a large part of the area under the perforated belt 9 between the pulleys 7, 8, so as to be able to collect any non-coin matter that falls through the perforations of the upper portion 9a of the belt 9. The dust collection tray 18 may have a handle 19 for facilitating its removal from the frame 5.
A drive unit 12 may be connected to one (or both) of the pulleys 7, 8. In the embodiments of
Furthermore, a rotation sensor 13 may be provided at one, or both, of the pulleys 7, 8, for providing an indication that the pulleys 7, 8 are rotating, and thus working properly. In one embodiment, the rotation sensor 13 may comprise a sensor which receives a predetermined number (e.g. 1) of pulses during each rotation of a pulley. The pulses may be provided to the control equipment (not shown). In case a pulley ceases to rotate, e.g. due to an object which prevents it from rotating, the pulses will cease, which the control equipment may interpret as an error condition, whereby appropriate measures may be taken. For example, the control equipment may provide a signal to the user, indicating that the error has occurred. In one embodiment, the drive unit 12 may be reversed in response to a stoppage of a pulley 7; 8 being detected, thus enabling an object that is obstructing the pulleys to fall through the perforations. A combination of signaling and reversing the conveyor belt is also conceivable.
In the embodiments of
The agitator 14 may be arranged so as to cause the lower position P2 of the belt to differ from the normal position P0. Thus, the upper portion 9a of the belt may be caused to present two sections 22a, 22b having different inclination. As is shown in
At an output end 11 of the conveyor belt 9, the plurality of coins may be allowed to drop freely down into the hopper or coin lifting device 4. In the embodiment described in
a and 6b illustrate different configurations of conveyor perforations. In the embodiment described above, which is shown in
In one embodiment of the invention, the belt may be fabricated from a glass fiber reinforced rubber material. Other materials are also conceivable, such as polymer materials, and other types of reinforcement (e.g. Kevlar, carbon fiber etc). Even thin sheet metal or fabrics may be used. Different combinations of pulleys and belt materials are conceivable.
The surface of the conveyor belt may be provided with means for increasing friction, in order to bring those coins that are closest to the belt to move faster than those coins that are situated on top. Essentially, the aim is to provide the conveyor belt 9 with a surface that causes the friction between the belt 9 and a coin transported thereon to be higher than the friction between two coins that are piled on top of each other.
Such means for increasing the friction may comprise providing the surface of the belt with a friction increasing material, such as e.g. rubber, elastomers or lightly adhesive materials. The friction increasing material may be disposed over the entire surface of the belt (excluding, of course, the perforations), or only in partial areas thereof. For example, the material may be disposed in the form of projecting dots, forming inverted dimples in the surface, or in the form of projecting grooves. Such projections may also be provided in a surface which is otherwise entirely coated with the friction increasing material. Thus, the surface structure may be modified, such as made rough etc.
It is also conceivable to provide the belt surface with a surface structure that increases the friction between the belt surface and coins transported on the belt. Examples of such pattern may be grooves, protrusions or projecting dots.
a-7f illustrate examples of different pulley designs. The pulleys may be designed in a multitude of ways. For example, as is illustrated in
In an alternative embodiment, as is shown in
In order to prevent the belt from collapsing in the case where the pulleys are made up by discs 24, each pulley 7, 8 may comprise several discs 24, as shown in
In an embodiment where only two discs 24 (such as in
Furthermore, the pulleys and/or the conveyor belt may be arranged so as to increase the friction between the conveyor belt and the pulleys. Thus, the backside of the belt and/or the perimeter of the pulley may be provided with e.g. a friction increasing material or surface structure.
Also, in the case where the pulleys are embodied as drums 29, a surface pattern may be provided on the perimeter of the drum 29, which surface pattern matches the pattern of the perforations of the conveyor belt 9. In an extreme case, as is shown in
Also the agitator 14 may be subject to a vast amount of variations. In the embodiment described with reference to
As another alternative, a rotating cam wheel (not shown) may be arranged at the conveyor belt. The cam wheel may be driven by its own drive unit, or by the drive unit 12 of the conditioning device 2. When the cam wheel is rotated, it may cause the belt to agitate with a predetermined amplitude and frequency.
Yet another alternative is to provide a device, such as a piston, which is caused to strike against the conveyor belt 9 at a predetermined frequency.
Another solution may be to provide one or both pulleys 7, 8 with a cam wheel form, or any other “irregular” form, so that the conveyor is caused to agitate as a result of the rotation of the pulley(s). In the case where both pulleys 7, 8 have cam wheel form, these may be arranged so as to rotate in or out of phase.
A further alternative may comprise using a step motor for driving the conveyor belt. Alternatively, the drive unit 12 could be intermittently driven, e.g. alternately forwards and backwards, so as to cause the belt 9 to agitate in the movement direction as well.
As yet another option, a height limiter (not shown) may be included, with the purpose of further limiting the amount of piled coins that may be conveyed on the belt 9. A height limiter may take the shape of e.g. a plate, a rake or a beam, which is arranged at a suitable height above the surface of the conveyor belt 9.
Another option may be a coin tipping device (not shown) for preventing coins from remaining or traveling standing up along the side walls 15a, 15b of the conditioning device 2. Such a device may comprise a protrusion which is arranged at an appropriate height on the side walls 15a, 15b.
Finally, it is possible to arrange a brush or a scrape (not shown) for cleaning the belt, after the coins have been discharged at the output end 11.
While the invention has been described in terms of an exemplifying embodiment, followed by some currently contemplated design variations, it is realized that a number of different embodiments may be achieved, through combination of the different design variations described, without departing from the scope of the appended claims.
Number | Date | Country | Kind |
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0202819-9 | Sep 2002 | SE | national |
This application is a continuation of international application no. PCT/SE2003/001475, filed on Sep. 23, 2003; which application claims the benefit of provisional application No. 60/413,039, filed Sep. 24, 2002, and Swedish application no. 0202819-9, filed Sep. 24, 2002.
Number | Date | Country | |
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60413039 | Sep 2002 | US |
Number | Date | Country | |
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Parent | PCT/SE03/01475 | Sep 2003 | US |
Child | 11085659 | Mar 2005 | US |