JP4224364B2 - Medal cleaning machine - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a medal cleaning and polishing apparatus that automatically cleans and polishes the surface of game medals and coins (hereinafter collectively referred to as medals) to remove oil, grease, dust, and dirt, and more particularly, quickly removes excess cleaning water. The present invention relates to a technique that can reduce the excessive wetting of medals by draining water.
[0002]
[Prior art]
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, and 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 the lower brush plate 25 A cylindrical body 26 surrounding the lower side is provided, a medal discharge port 27 for discharging the medal m between the brush boards 24 and 25 is provided in the cylindrical body 26, a motor 30 for rotating the lower brush board 25 is provided, and each brush bristle is provided. There is known a structure in which a water supply pipe 34 for supplying cleaning water W is provided at the opposite portions of 24a and 25a, and the lower brush board 25 is rotated and automatically cleaned and polished while the medal m is wet. Have (For example, see Patent Document 1).
[0003]
By the way, in the medal cleaning / polishing apparatus having the above structure, when a large amount of the cleaning water W is supplied, the excess cleaning water W stays on the lower brush plate 25 without being quickly drained to the bottom of the cylindrical body 6. The medal m was discharged in an excessively wet state, and there was a problem that it took time for subsequent drying. Further, when the amount of water supply is made small, there is a problem that the cleaning water W does not spread over the entire bristles 24a and 25a, and the medal m is not sufficiently cleaned.
[0004]
[Patent Document 1]
Japanese Patent Laid-Open No. 2001-113025
[Problems to be solved by the invention]
The problem to be solved by the present invention is to solve these problems of the prior art, reliably wash and polish the medal using a sufficient amount of washing water, and drain the excess washing water promptly. An object of the present invention is to provide a medal cleaning and polishing apparatus that can reduce excessive wetting.
[0006]
[Means for Solving the Problems]
The configuration of the present invention that solves this problem is as follows.
1) A medal that inserts medals between each brush board by providing an upper brush board with brush bristles on the bottom and a lower brush board with brush bristles on the top so that the bristles face each other. A slot is provided, and a cylinder surrounding the outer circumference of each brush board and the lower brush board is provided, and a medal discharge opening for discharging medals between the brush boards is provided in the cylinder, and both brush boards are relative to each other. Rotation drive means for rotating the lower brush board is provided, and water supply means for supplying cleaning water is provided at the part where the brush bristles of each brush face are opposed to each other, and each brush disk is relatively moved with the medal wet. In the medal cleaning / polishing apparatus rotated and polished, a surplus portion is provided by providing a flat portion having a predetermined diameter at the center of the upper surface of the lower brush disc and opening a plurality of drain holes in the flat portion. Drain the wash water from the drain hole. The medal cleaning and polishing apparatus 2) characterized in that the medal cleaning and polishing apparatus 3) according to 1) above, wherein the upper surface of the flat portion is radially partitioned by ridges, and the drainage holes are provided between adjacent ridges and The medal cleaning and polishing apparatus 4) described in 2) above, which is open in the vicinity of the ridge opposite to the rotation direction of the lower brush board 2) or 2) above, wherein the height of the ridge is lower than the thickness of the medal. 3) Medal washing and polishing apparatus 5) The brush sheet of the lower brush board is partially planted, and the soft sheet is placed so that the upper surface of the sheet is placed at a position lower than the height of the upper end of the brush bristle in the other part. The above-mentioned 1) to which the coefficient of friction of the soft sheet is larger than the coefficient of friction of the upper surface of the lower bristle disc so that the medal can be reliably transferred to the discharge port by the friction of the soft sheet. 4) Any medal cleaning and polishing device is there.
[0007]
[Action]
In the present invention, the cleaning water is supplied to the facing portion of each brush hair by the water supply means, and each brush board is rotated relatively or the lower brush board is rotated by the rotation driving means. In this state, when a medal is inserted between each brush board through the medal insertion slot, the medal gets wet with cleaning water and is cleaned and polished by each brush hair. The medal receives centrifugal force, moves along the inner periphery of the cylinder while being cleaned and polished, and is discharged from the medal outlet.
[0008]
The washing water falls on the upper surface of the lower brush board through the medal slot and spreads over the entire area of the brush hair. The excess washing water is quickly drained to the lower cylinder through the drainage hole in the flat part, so that the medal is drained well and the subsequent drying can be performed efficiently.
[0009]
In the case where the flat portion is partitioned by a plurality of ridges, surplus cleaning water that tends to stay in the flat portion is actively guided to the drainage holes by sending the ridges in the rotation direction. In particular, a drainage hole opened near the protrusion on the opposite side to the rotation direction of the lower brush board is sent out in the rotation direction by the protrusion, and then immediately guided to the drainage hole and quickly drained. Further, when the height of the protrusion is lower than the thickness of the medal, the inserted medal is transferred to the brush hair without being caught and is stably cleaned and polished.
[0010]
DETAILED DESCRIPTION OF THE INVENTION
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.
[0011]
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 washing chemical is mixed is generally used.
[0012]
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.
[0013]
The medal cleaning and polishing apparatus of the present invention may be used alone, or may be used as equipment by being connected to a drying apparatus or another apparatus. Embodiments of the present invention will be specifically described below with reference to the drawings.
[0014]
【Example】
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 a plan view of the lower brush board of the embodiment, and FIGS. FIG. 6 is an explanatory view showing the drainage of the cleaning water of the embodiment. FIG.
[0015]
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 a medal intake, 4b is brush hair, 5 is a lower brush board, 5a is brush hair, and 5b is flat. , 5c is a protrusion, 5d is a drain hole, 6 is a cylinder, 6a is a drain hole, 7 is a medal discharge port, 8 is a rotating shaft, 8a is a driven roller, 9 is a bearing, 10 is a motor, 10a is a drive roller , 11 is a drive belt, 12 is a water storage tank, 13 is a water supply pump, 14 is a water supply pipe, 14a is a water outlet, 15 is a cabinet, m is a medal, and W is washing water.
[0016]
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 through an annular body 3 in a cover 1 in which a cone-shaped medal slot 2 is formed as shown in FIGS. The board 4 is attached so that the medal intake 4a and the medal slot 2 communicate with each other, and the lower brush board 5 in which the brush bristles 5a are planted on the upper surface coaxially therewith is rotatably supported.
[0017]
As shown in FIG. 3, the lower brush disc 5 has a flat portion 5b having a diameter substantially the same as the medal intake 4a of the upper brush disc 4 at the center of the upper surface, and a thickness of the medal m is formed on the flat portion 5b. 4 ridges 5c having a lower height (about 1 mm) are erected in a radial pattern, and a small-diameter drainage hole 5d is opened between adjacent ridges 5c near the ridge 5c on the opposite side to the rotation direction. A cylindrical body 6 having a drain hole 6a on the lower surface and a medal discharge port 7 on the side surface is provided below 1 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.
[0018]
A rotating shaft 8 on which a driven roller 8a is pivotally mounted is suspended on the lower surface of the lower brush board 5, and is supported by a bearing 9. A driving belt is provided between the driven roller 8a and a driving roller 10a of an adjacent motor 10. 11, a water storage tank 12 is provided below the drain hole 6 a of the cylindrical body 6, and a water storage tank 12 that is open at the top to store the cleaning water W is provided, and a water supply pump 13 that sends out the cleaning water W in the water storage tank 12 is attached. The water supply pipe 14 for supplying the cleaning water W sent out in 13 upward is piped, and the upper end of the water supply pipe 14 is bent downward to form the water discharge port 14 a for discharging the cleaning water W to the medal insertion port 2. ing.
[0019]
In this embodiment, when the motor 10 is operated as shown in FIG. 4, 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 14a to the medal insertion port 2 through the water supply pipe 14, and the medal intake 4a of the upper brush disc 4 is discharged. Flows into the brush bristles 4b, 5a, flows down to the bottom of the cylinder 6 from the gap between the lower brush disc 5 and the cylinder 6, is collected in the water storage tank 12 through the drain hole 6a, and is supplied with water again. Circulate.
[0020]
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 medal intake 4a, and both surfaces are cleaned and polished by the brush bristles 4b and 5a and the cleaning water W. As shown in FIG. 5, the lower brush disk 5 moves in the outer circumferential direction by the rotation and centrifugal force thereof.
[0021]
Thereafter, the medal m is moved along the inner periphery of the cylindrical body 6 by centrifugal force while being cleaned and polished, and the medal m from which oil, grease, dust, and dirt are removed is discharged from the medal discharge port 7 and the removed oil / Fat, dust and dirt are drained together with the cleaning water W from the drain hole 6a to the water storage tank 12.
[0022]
Here, the washing water W falls through the medal slot 2 to the flat portion 5b of the lower brush board 5 and spreads over the entire area of the surrounding brush hair 5a. The excess washing water W is drained to the lower cylinder 6 through the drain hole 5d by centrifugal force due to the rotation of the lower brush plate 5 and the rotation in the rotation direction by the protrusion 5c, and the medal m is sufficiently drained. It is discharged at.
[0023]
Further, since the height of the protrusion 5c is set to be lower than the thickness of the medal m, the inserted medal m is transferred to the brush bristles 5a without being caught and stably cleaned and polished. Further, since the drain hole 5d is opened near the protrusion 5c opposite to the rotation direction of the lower brush disc 5, the washing water W to be retained is directly guided to the drain hole 5d by the protrusion 5c and quickly. Drained.
[0024]
FIG. 7 shows another example of the lower brush board of the embodiment. FIG. 7 is a plan view of a lower brush board of another example of the embodiment. The lower brush board 5 shown in FIG. 7 is provided with drainage equivalent to the embodiment by omitting the protrusions 5c and opening a large number of drain holes 5d. Other reference numerals and configurations are the same as those in the embodiment.
[0025]
8 and 9 show another example of the lower brush board of the embodiment. FIG. 8 is a plan view of a lower brush board of another example of the embodiment, and FIG. 9 is a cross-sectional view taken along line AA of FIG. In the figure, 5e is a soft sheet. The lower brush disc 5 shown in FIGS. 8 and 9 is a soft sheet 5e made of a urethane resin in which the bristle 5a is partially planted in a circular shape with a small area and the other part is 0.5 mm thinner than the height of the bristle 5a. Is provided to project the brush hair 5a.
[0026]
Therefore, depending on the rigidity of the brush bristles 5a and the weight of the medal m, the medal m may stay unnecessarily due to insufficient feeding force to the medal discharge port 7, but according to this embodiment, the medal m is caused by the friction of the soft sheet 5e. m can be reliably transferred to the medal discharge port 7, and the wasteful residence time of the medal m can be reduced to improve the cleaning and polishing processing capability. Other reference numerals and configurations are the same as those in the embodiment.
[0027]
【The invention's effect】
As described above, according to the present invention, a medal that can reliably wash and polish a medal using a sufficient amount of washing water, and can quickly drain excess surplus water to reduce excessive wetting of the medal. A cleaning and polishing apparatus can be provided.
[Brief description of the drawings]
FIG. 1 is a longitudinal sectional view of a medal cleaning and polishing apparatus according to an embodiment.
FIG. 2 is an exploded perspective view of the medal cleaning and polishing apparatus according to the embodiment.
FIG. 3 is a plan view of a lower brush board of the embodiment.
FIG. 4 is an explanatory view showing a usage state of the medal cleaning and polishing apparatus according to the embodiment.
FIG. 5 is an explanatory view showing a usage state of the medal cleaning and polishing apparatus of the embodiment.
FIG. 6 is an explanatory diagram showing drainage of cleaning water according to an example.
FIG. 7 is a plan view of a lower brush board of another example of the embodiment.
FIG. 8 is a plan view of a lower brush board of another example of the embodiment.
9 is a cross-sectional view taken along the line AA in FIG.
FIG. 10 is a longitudinal sectional view of a conventional medal cleaning and polishing apparatus.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Cover 2 Medal insertion slot 3 Annular body 4 Upper brush board 4a Medal inlet 4b Brush bristle 5 Lower brush board 5a Brush bristle 5b Flat part 5c Ridge 5d Drain hole 5e Soft sheet 6 Cylindrical body 6a Drain hole 7 Medal outlet 8 Rotating shaft 8a Driven roller 9 Bearing 10 Motor 10a Drive motor 11 Drive belt 12 Water storage tank 13 Water supply pump 14 Water supply pipe 14a Water discharge port 15 Cabinet 22 Medal insertion port 24 Upper brush plate 24a Brush hair 25 Lower brush plate 25a Brush hair 26 Tube 27 Medal outlet 30 Motor 34 Water supply pipe m Medal W Wash water

Claims (5)

  A medal insertion slot for placing medals between the upper brush board with brush bristles on the bottom and a lower brush board with brush bristles on the top so that the bristles face each other. A cylindrical body that surrounds the outer periphery of each brush board and the lower brush board, a medal discharge port for discharging medals between the brush boards is provided in the cylindrical body, and both brush boards are relatively Alternatively, a rotation drive means for rotating the lower brush board is provided, and a water supply means for supplying cleaning water is provided at the portion of each brush board where the bristles are opposed, and each brush board is relatively rotated while the medal is wet. In the medal cleaning and polishing apparatus configured to perform polishing and polishing, a flat portion having a predetermined diameter is provided at the center of the upper surface of the lower brush disc, and a plurality of drain holes are opened in the flat portion to supply excess water supplied. Drain the wash water from the drain hole Medal washing polishing apparatus is characterized in that the.   The medal cleaning and polishing apparatus according to claim 1, wherein the upper surface of the flat portion is radially divided by protrusions.   The medal cleaning and polishing apparatus according to claim 2, wherein the drainage holes are opened between adjacent ridges and in the vicinity of the ridges on the side opposite to the rotation direction of the lower brush disc.   4. The medal cleaning and polishing apparatus according to claim 2, wherein the height of the ridge is lower than the thickness of the medal. The lower bristle brush bristles are partially planted, and a soft sheet is provided in the other part so that the upper surface of the sheet is located at a position lower than the height of the upper end of the bristle, and the friction coefficient of the soft sheet is set. The medal cleaning and polishing apparatus according to any one of claims 1 to 4, wherein the medal cleaning and polishing apparatus is configured to be larger than a friction coefficient of the upper surface of the brush bristles of the lower brush board so that the medal can be reliably transferred to the discharge port by the friction of the soft sheet.

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