JP4224427B2 - Medal cleaning machine - Google Patents

Description

  The present invention relates to a medal cleaning and polishing apparatus that automatically cleans and polishes the surface of medals and coins for games (hereinafter collectively referred to as medals) to remove oil, grease, dust, and dirt. The present invention relates to technology for preventing clogging.

  Conventionally, as a medal washing and polishing apparatus, as shown in FIG. 10, a fixed upper brush board 24 having brush bristles 24a planted on a lower surface and a rotatable lower brush board 25 having brush bristles 25a planted on an upper face are provided for each brush bristle. 24a and 25a are provided at a predetermined interval so as to face each other, a medal insertion port 22 for inserting a medal m is provided between the brush plates 24 and 25, and the outer periphery of each brush plate 24 and 25 and below the lower brush plate 25. A cylindrical body 26 is provided, the cylindrical body 26 is provided with a medal discharge port 27 for discharging the medal m between the brush plates 24, 25, a motor 30 for rotating the lower brush plate 25 is provided, and each brush hair 24a, There is known a structure in which a water supply pipe 34 for supplying cleaning water W is provided at an opposite portion of 25a, and the lower brush board 25 is rotated and automatically cleaned and polished while the medal m is wet. ( If example see Patent Document 1). 35 is a water supply pump, 36 is a water absorption roller, and 37 is a squeeze roller.

By the way, the medal cleaning and polishing apparatus having the above structure forms the medal receiving shelf 26a so that the medal m is not caught between the outer peripheral surface of the lower brush disc 25 and the inner peripheral surface of the cylindrical body 26, thereby forming a gap. As shown in FIG. 11, for example, when the medal m enters the medal discharge port 27 in a state where the medal m overlaps vertically as shown in FIG. 11, between the medal receiving shelf 26a and the ceiling of the medal discharge port 27 There is a problem that the medal m loses its place of escape due to being pinched by a hard member from above and below, leading to stoppage or breakdown of the equipment.
Japanese Patent Laid-Open No. 2001-113025

  The problem to be solved by the present invention is to provide a medal cleaning and polishing apparatus capable of solving these conventional problems and preventing the clogging of medals when the medals are discharged and smoothly cleaning and polishing.

The configuration of the present invention that solves this problem is as follows.
1) An upper brush board with brush bristles on the lower surface and a lower brush board with brush bristles on the upper surface are provided at predetermined intervals so that the brush hairs face each other, and the center of the upper brush board is opened to give a medal A medal slot is provided with a cylinder that surrounds the outer periphery of each brush board and the lower brush board, and a medal outlet that discharges medals between each brush board is provided on the side of the cylinder. Rotation drive means for rotating both of the boards relatively or the lower brush board is provided, and water supply means for supplying cleaning water is provided at the part where the brush hairs of each brush board face each other, and each brush in a state where the medal is wet In the medal cleaning and polishing apparatus in which the disk is relatively rotated and cleaned and polished, the cylindrical peripheral surface including the lower edge of the medal discharge port is projected inwardly, and the brush bristles of the lower brush disk and Form a medal shelf with the same height The medal cleaning and polishing apparatus 2), wherein a protruding portion is provided on the upper edge of the medal discharge port inwardly from the tip of the medal receiving shelf so that the medal discharge port can prevent clogging of the medal. The medal cleaning and polishing apparatus according to 1) above, wherein a medal fall prevention base for preventing a medal from dropping is formed at the tip of the medal receiving shelf immediately below the overhanging portion. 3) The amount of protrusion of the overhanging portion to the inside from the medal receiving shelf is The medal cleaning and polishing apparatus according to 1) or 2) described above in the range of 1 to 5 mm 4) The interval between the medal receiving shelf and the overhanging portion is smaller than the total thickness of the two medals 1) to 3) The medal cleaning and polishing apparatus according to any one of the above.

  In the present invention, the cleaning water is supplied to the facing portion of each bristle by the water supply means, and each brush disk is rotated relatively or one by the rotation driving means. In this state, when a medal is inserted between each brush board through the medal insertion slot, the medal is washed and polished by each brush hair, receives the centrifugal force, moves along the inner periphery of the cylinder, and removes the medal. Drain from the exit.

  Here, even if the medals enter the medal outlet with the top and bottom overlapping, before the lower medals reach the medal receiving shelf, the overhanging portion presses the upper medals downward, and the entire surface is the lower brush. The lower medal on the brush hair of the board slightly deforms the brush hair to form a refuge, separating the overlapping medals without being fixed between the medal shelf and the ceiling of the medal outlet. Can be discharged smoothly one by one.

  As the rotation of each brush board of the present invention, a method of rotating only the lower brush board, a method of rotating the upper brush board and the lower brush board in different directions, and an upper brush board and a lower brush board at different speeds. There is a method of rotating in the same direction, and any rotation that causes relative friction with at least the upper and lower brush hairs may be used.

  As a water supply means, a structure in which water is supplied simultaneously with the insertion of a medal from the medal insertion opening is also preferable, but there is also a structure in which water is discharged from the brushed part of the brush hair of each brush board, which is preferable because the cleaning water can be supplied evenly. As the washing water, water or water in which a required amount of a detergent is mixed is generally used.

  The brush bristles of each brush board have a brush shape, such as those with the same length planted on the brush board so as to be planar, or those with different lengths planted so as to be uneven If so, the shape, thickness of the bristle, and material are not limited, but it is desirable to reliably remove oil, grease, dust, and dirt on both sides of the medal and to prevent damage to the surface of the medal.

  If a medal drop prevention stand is formed at the tip of the medal receiving shelf directly under the overhang, a medal with a small diameter and thickness that is easy to drop from the gap between the medal receiving shelf and the lower brush board Can prevent the trouble of the device more reliably. A protruding amount inward from the medal receiving shelf of the overhang portion is sufficient in the range of 1 to 5 mm. The distance between the medal receiving shelf and the overhanging portion is set to be smaller than the total thickness of the two medals, and the sheets are discharged one by one to reduce unwashed residue. Embodiments of the present invention will be specifically described below with reference to the drawings.

  1 is a longitudinal sectional view of the medal cleaning and polishing apparatus of the embodiment, FIG. 2 is an exploded perspective view of the medal cleaning and polishing apparatus of the embodiment, FIG. 3 is an explanatory view of the medal receiving shelf and the overhanging portion of the embodiment, and FIG. FIG. 5 is a perspective view of a water absorbing portion of the embodiment, and FIGS. 6 to 8 are explanatory views showing a usage state of the medal cleaning and polishing apparatus of the embodiment.

  In the figure, 1 is a cover, 2 is a medal slot, 3 is an annular body, 4 is an upper brush board, 4a is an opening, 4b is brush hair, 5 is a lower brush board, 5a is brush hair, and 5b is a soft sheet. , 6 is a cylindrical body, 6a is a drainage hole, 6b is a drainage channel, 6c is a medal receiving shelf, 6d is a protruding portion, 7 is a medal discharge port, 8 is a rotating shaft, 8a is a driven roller, 9 is a bearing, Motor, 10a is a driving roller, 11 is a driving belt, 12 is a water storage tank, 13 is a water supply pump, 14 is a water supply pipe, 14a is a water discharge port, 15 is a cabinet, 15a is a medal discharge port, 16 is a water absorption roller, 16a is a gear , 17 is a squeezing roller, 17a is a gear, 17b is a small gear, 18 is a drainage channel, 19 is a motor, 19a is a gear, 20 is a drive chain, m is a medal, and W is washing water.

  The medal cleaning and polishing apparatus of the present embodiment has an upper brush in which brush bristles 4b are planted on the lower surface of a cover 1 having a cone-shaped medal slot 2 as shown in FIGS. The board 4 is attached so that the opening 4a and the medal slot 2 communicate with each other, and the lower brush board 5 is rotatably supported coaxially therewith.

  As shown in FIG. 4, the lower brush disc 5 is provided with a thin strip-shaped soft sheet 5b on the upper surface in a radial manner from the central portion to the outer peripheral end along the radial direction, and the same soft portion is provided on portions other than the soft sheet 5b. The bristles 5a having a length such that the height difference from the sheet 5b is 0.5 mm are planted.

  Below the cover 1, a cylinder 6 having a drain hole 6 a on the lower surface and a medal discharge port 7 on the side surface is provided so as to surround the outer peripheral surface of the upper brush disc 4, the outer peripheral surface of the lower brush disc 5, and the lower portion. 3 (a) and 3 (b), the inner circumference of the cylinder 6 including the lower edge of the medal discharge port 7 is placed on the medal receiving shelf 6c having the same height as the brush bristles 5a of the lower brush board 5. It is formed horizontally along the surface, and the protruding portion 6d is formed on the upper edge of the medal discharge port 7 so that the lower surface thereof is higher than the thickness of the medal m from the upper surface of the medal receiving shelf 6c and lower than the total thickness of the two medals m. It is provided so as to come to the position, and its overhanging portion 6d protrudes 3 mm inward from the tip of the medal receiving shelf 6c.

  A rotating shaft 8 with a driven roller 8a mounted on the lower surface of the lower brush board 5 is suspended and supported by a bearing 9, and is driven between the driven roller 8a and a driving roller 10a of an adjacent motor 10. A water storage tank 12 for storing the cleaning water W is provided below the drainage channel 6b that hangs the belt 11 and communicates from the drainage hole 6a of the cylindrical body 6, and a water supply pump 13 that sends the cleaning water W in the storage tank 12 is attached. A water supply pipe 14 for supplying the cleaning water W sent from the water supply pump 13 upward is provided, and a water outlet 14 a for bending the upper end of the water supply pipe 14 downward to discharge the cleaning water W to the medal inlet 2. Forming.

  Two pairs of water-absorbing rollers 16 composed of a sponge that pushes the discharged medal m from above and below and sucks the remaining water droplets while sucking water are pivotally supported at positions adjacent to the medal discharge port 7 of the cylindrical body 6. A squeezing roller 17 made of a hard plastic that squeezes the washing water W absorbed by the water absorbing roller 16 is pressed against the water absorbing roller 16 and pivotally supported under the water absorbing roller 16, and is supported by each water absorbing roller 16 and each squeezing roller 17. The gears 16a and 17a and the small gear 17b are axially attached to engage the gears 16a and 17a, and the drive chain 20 is hung between the small gears 17b and the gear 19a axially attached to the output shaft of the motor 19. Accordingly, a drainage passage 18 for draining the washing water W squeezed by the squeezing roller 17 to the water storage tank 12 is provided.

  In this embodiment, when the motor 10 is operated as shown in FIG. 6, the driving force is transmitted to the rotating shaft 8 by the driving belt 11 to rotate the lower brush disc 5. Wash water W is stored in the water storage tank 12, and when the water supply pump 13 is operated, the wash water W is discharged from the water discharge port 14 a to the medal insertion port 2 through the water supply pipe 14 and from the opening 4 a of the upper brush disc 4. It flows in between each bristle 4b, 5a, flows down to the bottom of the cylinder 6 from the gap between the lower brush board 5 and the cylinder 6 and is recovered from the drain hole 6a to the water storage tank 12 through the drainage channel 6b. Supply water and circulate.

  When the medal m is inserted into the medal insertion slot 2 in this state, the medal m falls onto the lower brush board 5 through the opening 4a, and the brush bristles 4b and 5a and the washing water W are double-sided as shown in FIG. Is moved to the outer circumferential direction by the rotation of the lower brush disk 5 and its centrifugal force while being cleaned and polished, and the gap between the lower brush disk 5 and the inner peripheral surface of the cylindrical body 6 as shown in FIG. Is placed on the medal receiving shelf 6c, and both sides of the medal m are cleaned and polished while circling along the inner periphery of the cylindrical body 6.

  Thereafter, the medal m comes into contact with the soft sheet 5c provided along the radial direction of the lower brush board 5, and the medal m is quickly transferred to the medal discharge port 7 without friction by the friction, so that oil, fat, dust, The medal m from which the dirt is removed is discharged from the medal discharge port 7, and the removed oil, fat, dust, and dirt are drained from the drain hole 6a to the water storage tank 12 together with the washing water W. The medal m discharged from the medal discharge port 7 is further sent to the medal discharge port 15a while the water droplets of the cleaning water W remaining on the surface are removed by the pair of water absorption rollers 16, and the cleaning and polishing are completed.

  Here, when the medal m enters the medal discharge port 7 in a state where the medals m overlap each other, the medal receiving shelf 6c and the ceiling of the medal discharge port 7 may be bitten and sandwiched by hard members from above and below. There is a problem that the medal m loses its escape and causes the equipment to stop or break down.

  However, according to this embodiment, before the lower medal m reaches the medal receiving shelf 6c, the overhanging portion 6d presses the upper medal m downward. At that time, as shown in FIG. 8B, the lower medal m is entirely placed on the brush bristles 5a, so that the lower medal m slightly deforms the brush bristles 5a to form a refuge and receive the medal. The overlapped medals m can be separated and smoothly discharged one by one without being fixed between the shelf 6c and the overhanging portion 6d.

  Further, as shown in FIG. 8C, even if the medals m that are stacked one above the other are sandwiched between the medal receiving shelf 6c and the overhanging portion 6d, most of the medals m below are formed on the lower brush disc 5. Since it is in contact with the brush bristles 5a, the lower medal m is removed in the rotational direction or slightly rearward and separated by the rotational force of the lower brush disc 5 and its friction, and the discharge is not hindered.

  FIG. 9 shows another example of the medal receiving shelf of the embodiment. FIG. 9 is an explanatory view showing a usage state of the medal cleaning and polishing apparatus of another example of the embodiment. In the figure, 6e is a medal fall prevention stand. In another example of the embodiment shown in FIG. 9, a medal fall prevention table 6e having a height lower than that of the medal receiving shelf 6c is formed along the inner periphery of the medal receiving shelf 6c.

  When the overlapping medal m is pressed downward by the overhanging portion 6d, the lower medal m may try to fall downward from the gap between the medal receiving shelf 6c and the brush bristles 5a. It is received by the prevention stand 6e to prevent dropping or biting. Other reference numerals and configurations are the same as those in the embodiment.

  The medal cleaning and polishing apparatus of the present invention can be applied to cleaning and polishing of articles having similar shapes in addition to medals and coins.

It is a longitudinal cross-sectional view of the medal cleaning polishing apparatus of an Example. It is a disassembled perspective view of the medal cleaning polishing apparatus of an Example. It is explanatory drawing of the medal receiving shelf and overhang | projection part of an Example. It is a top view of the lower brush board of an Example. It is a perspective view of the water absorption part of an Example. It is explanatory drawing which shows the use condition of the medal cleaning polishing apparatus of an Example. It is explanatory drawing which shows the use condition of the medal cleaning polishing apparatus of an Example. It is explanatory drawing which shows the use condition of the medal cleaning polishing apparatus of an Example. It is explanatory drawing which shows the use condition of the medal cleaning polishing apparatus of the other example of an Example. It is a longitudinal cross-sectional view of the conventional medal cleaning and polishing apparatus. It is explanatory drawing of the conventional medal receiving shelf.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Cover 2 Medal insertion slot 3 Ring body 4 Upper brush board 4a Opening 4b Brush bristle 5 Lower brush board 5a Brush bristle 5b Soft sheet 6 Cylindrical body 6a Drain hole 6b Drain channel 6c Medal receiving shelf 6d Overhang part 6e Medal fall Prevention base 7 Medal discharge port 8 Rotating shaft 8a Driven roller 9 Bearing 10 Motor 10a Drive roller 11 Drive belt 12 Water storage tank 13 Water supply pump 14 Water supply pipe 14a Water discharge port 15 Cabinet 15a Medal discharge port 16 Water absorption roller 16a Gear 17 Squeeze roller 17a Gear 17b Small gear 18 Drainage channel 19 Motor 19a Gear 20 Drive chain 22 Medal slot 24 Upper brush panel 24a Brush bristles 25 Lower brush panel 25a Brush bristles 26 Tubular 26a Medal receiving shelf 27 Medal outlet 30 Motor 34 Water supply pipe 35 Water supply Pong 36 water rollers 37 squeeze roller m medal W washing water

Claims (4)

  An upper brush board with brush bristles on the bottom and a lower brush board with brush bristles on the top are provided at predetermined intervals so that each brush bristles face each other, and the center of the upper brush board is opened to insert medals. The medal slot is provided with a cylinder that surrounds the outer periphery of each brush plate and the lower brush plate, and a medal discharge port for discharging medals between the brush plates is provided on the side of the cylinder. Rotation drive means for rotating both or the lower brush disk is provided, and water supply means for supplying cleaning water is provided at the part where the brush hairs of each brush disk face each other. In the medal cleaning and polishing apparatus, which is relatively rotated and cleaned and polished, the inner peripheral surface of the cylinder including the lower edge of the medal discharge port is protruded inward to have the same height as the brush bristles of the lower brush board Forming a medal shelf The projecting portion projecting inward from the tip of medals support ledge on the upper opening edge of the Le outlet medal washing polishing apparatus is characterized in that to be able to prevent clogging of the medals in the medal discharge opening.   2. The medal cleaning / polishing apparatus according to claim 1, wherein a medal fall prevention base for preventing the medal from dropping is formed at a tip of the medal receiving shelf immediately below the projecting portion.   The medal cleaning and polishing apparatus according to claim 1 or 2, wherein the protruding portion projects inward from the medal receiving shelf within a range of 1 to 5 mm.   The medal cleaning and polishing apparatus according to any one of claims 1 to 3, wherein the interval between the medal receiving shelf and the overhanging portion is smaller than the total thickness of the two medals.

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