JPH0440702Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to an improvement of a tile supply device in an automatic mahjong table.

[Prior Art] The tile supply device for an automatic mahjong table, which is the object of the present invention, has an iron piece, a magnet, or an adsorption piece that is a combination of a magnet and an iron piece buried inside the mahjong tiles used. A rotary table that rotates with an oblique axis of rotation is installed at the bottom of the tile washing hopper installed below the mahjong table, and a suction ring equipped with a magnet is installed at the upper opening of the tile washing hopper.
The rotary table is mounted on a shaft so that it rotates while wrapping around the conveyor section on the periphery of the rotary table in a plan view, and the mahjong tiles dropped into the tile washing hopper from the slot of the mahjong table are washed by the rotary table. While doing so, the mahjong tiles are sent to a conveying section around the periphery of the rotary table, placed on the upper surface of the conveying section, and brought up to a position close to the bottom surface of the suction ring by the rotation of the rotary table, and placed face down among the mahjong tiles. Mahjong tiles in a predetermined posture are selectively attracted by a magnet provided in a suction ring, and only the mahjong tiles in a predetermined posture are taken out and supplied to an alignment section. This is a tile supply device at the table.

[Problems to be solved by the invention] This type of automatic mahjong table has a tile supply device that is
A rotary table that is rotatably supported at the bottom of the tile-washing hopper with an oblique axis of rotation carries the mahjong tiles that have fallen onto its top surface to the upward slope side by the rotation of the rotary table. Therefore, when the mahjong tiles are attracted to the suction ring and taken out, the mahjong tiles that are in a face down position are selected and taken out, which increases the efficiency of sending out the mahjong tiles in a certain face down position to the alignment section. However, it depends on the ratio of mahjong tiles that are in a predetermined posture (face down) and mahjong tiles that are in other postures. Furthermore, since the probability of the mahjong tiles being in the correct face-down position is smaller than the probability of being in the correct face-down position, there is a problem that the efficiency of sending the mahjong tiles in a predetermined position to the alignment unit is not increased. In addition, the rotary table rotates to lift the mahjong tiles on the top surface of the table to the upward slope side and fall to the downward slope side, thereby rolling the mahjong tiles that are not in the predetermined posture and taking the predetermined posture. In order to do this, the protrusions attached radially on the top surface of the rotary table are provided in the form of ribs that simply stir the mahjong tiles. If the mahjong tiles are set in a different position, there is a problem in that the efficiency of feeding the mahjong tiles in a predetermined position cannot be increased.

The present invention was developed to solve this problem, and effectively utilizes the protrusions provided radially on the top surface of the rotary table to transport the mahjong tiles that are sent to the conveyor section on the periphery of the rotary table. It is an object of the present invention to provide a new means for increasing the proportion of mahjong tiles that are in a predetermined face down position, thereby improving the efficiency of sending mahjong tiles to a sorting section in a fixed position. do.

[Means for solving the problem] In the present invention, as a means to achieve this object, an iron piece, a magnet, or an adsorption piece made of a combination of a magnet and an iron piece is embedded inside the mahjong tiles used. A rotary table that rotates with an oblique axis of rotation is arranged at the bottom of the tile-washing hopper installed below the mahjong table and is pivotally supported on the machine frame, and above the periphery of the rotary table, An annular suction ring equipped with a magnet on the lower surface side is rotatably supported, and the mahjong tiles are dropped into the tile washing hopper and carried up on the inclined upward side by a rotary table into a predetermined orientation among the mahjong tiles. In the tile supply device for an automatic mahjong table, which selects and takes out mahjong tiles using the suction ring and supplies the mahjong tiles to the sorting section, the upper surface of the rotary table has a central portion of the rotary table that protrudes from the upper surface of the rotary table. Radial protrusions directed toward the conveying section a at the more peripheral edge are formed to have a length such that their radial outer ends do not reach the conveying section, and their cross-sectional shapes are set to the front surface in the rotational direction of the rotary table. The rotary table is formed into a trapezoidal shape having a gently downwardly sloping side surface, a flat top surface, and a substantially vertical rear wall surface on the rear side in the rotation direction, and a polarity plate is provided below the bottom surface on the downwardly inclined side of the rotary table. This invention proposes a tile supply device for an automatic mahjong table, characterized in that magnets are arranged so as to face the upper side and the lower side and are supported on the machine frame.

[Example] Next, an example of implementation will be described in detail with reference to the drawings.

FIG. 1 is a top view of an automatic mahjong table A in which the present invention can be implemented, and in the same figure, reference numeral 1 indicates a mahjong table formed in the shape of a square plate. The mahjong table 1 is supported on the top surface of a machine frame 2 (FIG. 2) formed in the shape of a square box in the form of a lid plate that closes the opening on the top side of the machine frame 2. The mahjong tiles, which have been arranged in a tiled state by the tile alignment device B installed in the machine frame 2, are placed at a position slightly closer to the center from each edge on the mahjong table 1.
Window hole 1 through which the lift 10 that rises to the top surface appears.
1... is provided in the central part, and a drop opening 12 for dropping mahjong tiles after a game of one game toward the tile washing hopper 30 of the tile alignment device B below the mahjong table 1. The drop opening 12 is closed by a cover plate 13 which can be opened and closed.

As shown in the outline in FIG. 2, the tile alignment device B receives the mahjong tiles dropped from the drop slot 12 into the tile washing hopper 30, and adjusts them in a constant posture while washing the tiles. A tile supply device a supplies tiles to an alignment section b, and mahjong tiles sent out from the tile supply device a are stacked in two layers to an alignment section b.
It consists of a two-stage sorting device c that sequentially pushes out the mahjong tiles, and an extrusion device d that pushes out the mahjong tiles arranged in the alignment section b in a tiled state so as to be transferred to the upper surface of the lift 10 in the lowered position.

The tile supply device a is formed into a cylindrical shape and is attached to the machine frame 2.
At the bottom of the tile washing hopper 30 fixedly supported on the
A rotary table 31 that rotates with an inclined rotation axis Z by an inclined support shaft 20 is provided (a third
In the upper opening of the tile washing hopper 30, a suction ring 32 formed in an annular shape that overlaps the upper surface of the conveying section 31a at the periphery of the rotary table 31 in a plan view is disposed in a horizontal state. Magnets K are arranged and attached to the bottom surface of the suction ring 32 in an annular manner, and the mahjong tiles P have an adsorption piece of iron, a magnet, or a combination of these placed on the top side of the inside of the mahjong tiles P. is buried, and the suction piece inside this mahjong tile P is sucked by the suction ring 32, so that the mahjong tile P assumes a certain posture with the back side facing up.
It is configured to be attracted to the suction ring 32, carried out by the rotation of the suction ring 32, transferred to the starting end 33a of the conveyor 33, and supplied from the terminal end 33b of the conveyor 33 to the alignment section b.

Next, in FIGS. 4 and 5, 4 is attached to the upper surface of the aforementioned rotary table 31.
Projections protrude from the upper surface and are provided radially from the central portion of the rotary table 31 toward the conveying section 31a at the periphery, as shown in FIG. 4a is formed in a length that reaches a little in front of the annular conveyance part 31a formed at the peripheral edge of the rotary table 31, and its cross-sectional shape is as shown in FIG. The table 31 has an inclined surface 40 that gently slopes downward on the front side in the rotational direction, a flat upper surface 42, a substantially vertical rear wall surface 43 on the rear side in the rotational direction, and a flat bottom surface 44 that runs along the upper surface of the rotary table 31. in,
It is formed into an asymmetrical trapezoidal shape. The protrusions 4 are arranged such that the inner ends 4b facing the center of the rotary table 31 are eccentrically located laterally with respect to the rotation center of the rotary table 31, and the inner ends 4b It is arranged so that the sides fit into the parallel grid shape. Furthermore, each protrusion 4 is formed by being bent to follow the shape of the upper surface of the rotary table 31, so that the height of its protrusion from the upper surface of the rotary table 31 is approximately the same in the longitudinal direction. Furthermore, the single surface 41 on the outer end portion 4a side is also formed as an inclined surface that slopes downwardly toward the outside. In addition, this protrusion 4
... is four in the illustrated example, but may be increased or decreased as appropriate.

In addition, f is the rotary table 3 when the side indicated by symbol W in FIG.
The magnet is disposed below the inclined descending side Y of No. 1, and is formed into a rod shape, and is configured so that its polarity is divided into an upper surface side and a lower surface side. The polarity of the magnet f acts on a suction piece embedded inside the mahjong tile P on the top surface of the rotary table 31, so that the mahjong tile P is rolled into a prone position with the front side facing upward. It is set to . Also,
F7f' is another magnet configured similarly to the magnet f, and is located between the upwardly inclined side W and the downwardly inclined side Y of the rotary table 31, when the rotary table 31 moves from the upwardly inclined side W to the downwardly inclined side Y. The transmission pulley 34 is arranged at a lower position on the rotating side and is fixed to the upper surface of a transmission pulley 34 attached to a drive shaft m for driving the rotary table 31, and the drive shaft m is connected to the motor M.
When the rotation table 31 is rotated by the transmission pulley 34 and the transmission pulley 35 provided at the boss portion of the rotation table 31 and the rotation table 31 is driven via the transmission belt 36, which is wound around the transmission pulley 34 and the transmission pulley 35 provided at the boss portion of the rotation table 31, the rotation table 31 rotates around the drive axis m. do. Further, 50 is a motor that drives the suction ring 32, 51 is a drive wheel rotated by the motor 50, 32a is an engaging flange provided on the suction ring 32 to engage with the drive wheel 51, and 37 is the motor M This is an assembly machine frame for assembling the machine frame 2 to the floor plate 2a of the machine frame 2.

[Function] The embodiment device configured as described above functions as follows.

The mahjong tiles P... thrown into the tile washing hopper 30 and supported on the top surface of the rotary table 31 are accumulated on the inclined downward side of the top surface of the rotary table 31, and as the rotary table 31 rotates, the mahjong tiles P... It is sent out to the peripheral conveying section 31a while being stirred,
Among the mahjong tiles P..., the mahjong tiles P in a face down position are selected and sucked by the suction ring 32, taken out, and fed into the alignment section b. Then, the mahjong tiles P, which are not in the face down position, are not attracted by the suction ring 32 and fall from the upward slope side of the rotary table 31 toward the downward slope side, and again onto the downward slope side of the upper surface of the rotary table 31. The area becomes subject to stirring action.

At this time, the mahjong tiles P... which are subjected to the stirring action on the upper surface of the rotary table 31 are
When the protrusion 4 provided on the upper surface rotates to the part where it collides with the mahjong tile P..., when the mahjong tile P is in a face down position, Figs. 9 and 10.
As shown in the figure, it is scooped up by the gently sloped surface 40 on the front side of the protrusion 4, moves to the flat upper surface 42 of the protrusion 4 in that position, and then moves to the flat upper surface 42 of the protrusion 4. As shown in FIG. 11, the protrusion 4 falls onto the top surface of the rotary table 31 along the substantially vertical rear wall surface 43, but during this fall, the magnet f provided on the bottom surface of the rotary table 31 It will be affected by Therefore, due to the attraction between the magnetism of the magnet f and the magnetism within the mahjong tile P, the mahjong tile falls while maintaining its face down position, and falls onto the top surface of the rotary table 31 in that position.

In addition, when the mahjong tiles P are placed in a position with the writing surface facing upward, as shown in FIGS. 12 and 13, the protrusions 4 are The upper surface 42 of the protrusion 4 rises up the slope 40.
Then, from there, it falls along the substantially vertical rear wall surface 43 of the protrusion 4 as shown in FIG. 14, and as it falls, it is acted upon by the magnet f on the lower surface side of the rotary table 31.

For this reason, the mahjong tile P comes to receive a magnetic force acting between the adsorption piece inside the mahjong tile P and the magnet f, which turns the mahjong tile P into a face down position, in the free space on the way down, and this magnetic force The rotation of the mahjong tile P is now performed reliably, and the mahjong tile P is
As shown in the figure, it is dropped onto the upper surface of the rotary table 31 in a prone position.

Therefore, among the mahjong tiles P that are stirred and sent to the conveying section 31a at the peripheral edge of the rotary table 31, the proportion of the mahjong tiles P that are in a face down position is increased, and the suction ring 32 holds them in a predetermined position. This improves the efficiency of selecting and sucking the mahjong tiles P, taking them out, and sending them to the alignment section b.

[Effects of the invention] As explained above, the tile supply device for the automatic mahjong table according to the invention is based on the upper surface of the rotary table 31 which is supported to rotate with the rotational axis Z inclined at the bottom of the tile washing hopper 30. A trapezoidal shape having a protrusion 4 extending in a radial direction from the center on a portion other than the periphery, a section having a gently sloped surface 40 on the front side in the direction of rotation, a flat upper surface 42, and a substantially perpendicular rear wall surface 43. By arranging a magnet f whose polarity is divided into an upper surface side and a lower surface side below the lower surface of the inclined downward side of the rotary table 31 and supporting it on the machine frame 2, Mahjong tiles P are sent out to the conveyance section 31a at the peripheral edge of the rotary table 31 while being stirred on the upper surface of the rotary table 31 on the downward slope side...
is scooped up onto the flat upper surface 42 of the protrusion 4 in that position by the protrusion 4 on the upper surface of the rotary table 31, and is dropped from there along the substantially vertical rear wall surface 43. Since the mahjong tiles P... falling onto the upper surface of the rotary table 31 over the protrusions 4 are placed face down, since they are subjected to the action of the magnet f below the rotary table 31 in free space. The proportion of mahjong tiles P that have a predetermined posture among the mahjong tiles P sent out to the conveyance section 31a at the peripheral edge of the rotary table 31 is increased. Therefore, the mahjong tile P with the suction ring 32 in a predetermined posture is selected and taken out from the conveying section 31a on the peripheral edge of the rotary table 31,
The efficiency of sending it to the alignment part b is significantly improved,
The efficiency of feeding and arranging mahjong tiles P in a predetermined posture into the arranging part b is greatly improved.

[Brief explanation of the drawing]

FIG. 1 is a plan view of an automatic mahjong table that can implement the present invention, FIG. 2 is a schematic plan view of the tile alignment device described above, and FIG. 3 is a side sectional view schematically showing the tile alignment device described above.
FIG. 4 is a vertical sectional side view of the main part of the same as above, FIG. 5 is a plan view of the main part of the same as above, FIG. 8
The figures are longitudinal cross-sectional views of the protrusions, Figures 9, 10, and 11.
Figures 12, 13, and 14 are explanatory diagrams of the operation. Explanation of drawing symbols, A... Automatic mahjong table, B... Tile alignment device, a... Tile supply device, b... Aligning section, c
... Two-stage sorting device, d ... Extrusion device, 1 ... Mahjong table, 10 ... Lift, 11 ... Window hole, 12 ... Drop opening, 13 ... Lid plate, 2 ... Machine frame, 2a ...Floor plate, 20...Spindle, M...Motor, m...Drive shaft, P...Mahjong tiles, f, f'...Magnet, K...Magnet, Z...Rotation axis, 30...Washing Tile hopper, 3
1...Rotary table, 31a...Transportation section, 32...
...Adsorption ring, 32a...Engaging flange, 33...Conveyor, 33a...Starting end, 33b...Terminal end,
34, 35...Conduction pulley, 36...Conduction belt, 37...Assembling machine frame, 4...Protrusion, 4a...Outer end, 4b...Inner end, 40...Slope, 41...
...End face, 50...Motor, 51...Drive wheel.

Claims (1)

[Scope of utility model registration request] A tile washing hopper 30 that is installed below the mahjong table 1 by embedding an iron piece, a magnet, or a suction piece made of a combination of a magnet and an iron piece inside the mahjong tiles P to be used.
A rotary table 31 that rotates with an oblique rotational axis Z is disposed at the bottom of the rotary table 31 and is pivotally supported on the machine frame 2, and above the peripheral edge of the rotary table 31, a magnet K is provided on the lower surface side. A mahjong game in which an annular suction ring 32 is rotatably supported, and mahjong tiles P are dropped into a tile washing hopper 30 and taken up by a rotary table 31 to an upwardly inclined side of the mahjong tiles P, which are oriented in a predetermined direction. In the automatic mahjong table tile supply device for selecting and taking out tiles P using the suction ring 32 and supplying them to the alignment part b, the upper surface of the rotary table 31 has a rotary table protruding from the upper surface of the rotary table 31. The radial protrusions 4 extending from the central portion toward the conveyance section 31a at the periphery are formed to have a length such that their radial outer ends 4a do not reach the conveyance section 31a, and their cross-sectional shapes are The rotary table 31 is formed into a trapezoidal shape having a gently descending inclined surface 40 on the front side in the rotational direction of the rotary table 31, a flat upper surface 42, and a substantially vertical rear wall surface 43 on the rear side in the rotational direction. This tile supply device for an automatic mahjong table is characterized in that a magnet f whose polarity faces the upper surface and the lower surface is arranged below the bottom surface on the downward slope side and is supported on the machine frame 2.