JPH0146157B2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to an automatic mahjong table, and more specifically, tiles stacked in two levels on a waiting stand are transferred to a descending pallet, and the pallet is further transferred to the top of the mahjong table. This invention relates to a device for raising the device in alignment.

Conventionally, as shown in Japanese Patent Application Laid-Open No. 53-19232, this type of tile transfer/lifting device involves a crank pin linked to a motor being engaged with a cam having a half-moon-shaped play part. The pallet, which is connected to the cam via a bar, is lowered based on the rotation of the crank pin, rests at the lowered position based on the play area, and further engages with the crank pin at the play area. A lever is arranged, the lever is connected to the push plate via a wire, and when the pallet is at the lowering rest position, the push plate is moved back and forth via the wire by swinging of the lever based on the crank pin, and the pallet is placed on standby. A device has been devised in which tiles are pushed out and transferred from a table onto a pallet, and the pallet on which the two-tiered tiles are placed is lifted onto a top plate by rotation of a crank pin. However, the device
Based on one rotation of the continuously rotating crank pin, the pallet is lowered and paused at the lowered position, the push plate is reciprocated during the pause period, and the pallet is then raised, so that the pallet and It is extremely difficult to time the movement of the push plate accurately, and it is impossible to reliably transfer the tiles from the standby table to the pallet and onto the top plate. Driving with a crank pin requires a large crank radius, resulting in a large device. Furthermore, due to the fact that the crank pin engages a cam with a half-moon-shaped play part, the pallet is subjected to considerable acceleration when starting from its lowered position, causing the two-tiered tiles placed on the pallet to There is a risk of it breaking, and since the lever is swung by the crank pin in the half-moon-shaped play area to drive the push plate, the push plate is subjected to extremely large and shocking accelerations at the start of reciprocating motion and when turning. However, when transferring the tiles from the waiting stand to the pallet, the tiles stacked in two levels were often broken.

Therefore, the present invention supports the push plate so that it can freely reciprocate in the lateral direction, and connects it to a crank mechanism that is linked to a single rotation mechanism, supports the pallet so that it can freely reciprocate in the vertical direction, and connects it to a half-rotation mechanism. A switch is connected to the interlocking crank mechanism and detects the predetermined position of the push plate and pallet, and the half-rotation mechanism is driven to lower the pallet. The object of the present invention is to provide a device for transferring and raising tiles at an automatic mahjong table which eliminates the above-mentioned drawbacks and is configured to reciprocate and then drive a half-rotation mechanism again to raise the pallet. It is something.

Embodiments based on the present invention will be described below with reference to the drawings.

In FIG. 1, 1 is an automatic mahjong table, and 2 is the legs that support it.

At the end of the competition phase, if one of the competitors sitting in an adjacent position presses the start switch 14 provided on the outer edge of the top surface of the tabletop 1, and the electric circuit of this switch is closed, Fifth
As shown in the figure, this electrical signal is sent to a push-type solenoid 15 via a switch 19 fixed on the bottom surface of the top plate 3 near the opening/closing opening 4. The opening/closing opening 4 is fixed to approximately the middle of the pallet 12 and is held at the same level as the top plate 3 by a protruding support arm 16 with a claw 17 attached to the tip of the opening/closing opening. The bush type solenoid 15 receives an electric signal from the start switch 14 and is energized, and the tip of the plunger (movable iron core) kicks off the claw 17 and removes it from the support arm 16, so the opening/closing opening 4 pivots around the hinge 18. You can lower it to the position indicated by the chain line and create an opening on the top plate. The contestant throws the group of tiles that have been played into the table through this opening.

Once the injection is complete, the contestant presses the start switch 1 again.
When 4 is pressed to send an electrical signal, the switch 19, which is pressed by the lower surface of the opening/closing port 4 and changes the circuit, transmits the electrical signal to a half-rotation motor or a half-rotation clutch. Send it to the half-rotation mechanism H. As shown in FIG. 6, the half-rotation mechanism H is
The solenoid 21, which is energized by the switch 19, attracts the plunger and is connected to the solenoid from a notch 23 of a half-rotation wheel 22 fixed to the rotating shaft of the motor 20. At the same time as the claw 25 is removed, the switch 26 connected to the motor drive circuit is pressed under the switch 25 to close the circuit, and the half-rotation motor 20 starts rotating. When the rotary motion turns half a turn, another notch 24 provided on the opposite side of the notch 23 of the half-rotation wheel comes to the lower position, so the claw 25 is moved into this notch by the restoring force of the spring 27. Part 2
4, the rotational movement of the motor is suppressed and the electric circuit of the switch 26 is opened, so that the rotational movement is stopped.

This rotational motion is transmitted by a gear 28 to a crankshaft 29 provided directly below the pallets 12 arranged on all sides as shown in FIGS. 2 and 4.

As shown in FIG. 7, the pallet 12 is connected and held at two locations each by a crankshaft 29 and a crank mechanism C1, and is supported by a guide plate 31 so as to be able to reciprocate in the vertical direction. The crank mechanism C1 is composed of a crank 11 and a crank rod 30, and supports a pallet 12 with a rotating shaft at the upper end of the crank rod 30. It descends vertically and stops at the lowest position indicated by the chain line in the figure. At this time, at the bottom dead center, the switch 32 is pressed on the underside of the pallet to close the electrical circuit, and an electrical signal is sent to the single rotation mechanism O consisting of a single rotation motor or a single rotation clutch.

This single rotation mechanism O, as shown in FIG.
The solenoid 34 is energized by receiving an electric signal from the switch 32, and the claw 3 connected to the plunger (movable iron core) is energized.
5 is removed from the notch of the single-rotation wheel 36 fixed to the rotating shaft of the single-rotation motor 33, and at the same time, the electric circuit of the switch 37 that is connected to the drive circuit of this motor is closed, and the motor starts rotating. After one rotation, the pawl 35 again fits into the notch of the single rotation wheel 36 due to the restoring force of the spring 38, suppressing the rotation of the motor, and at the same time opens the circuit of the switch 37, so the motor remains at the position where it has made one rotation. Stop. This one-rotation motion is transmitted from the coaxial sprocket 39 to the chain 40, and further to the sprockets 41 of the push plate device provided at the lower center of the standby table 10 arranged on all sides. Since the sprocket 39 described in connection with the single rotation device and the sprocket 41 used in this push plate device have the same number of teeth, the chain 40 reliably transmits one rotation motion.

As shown in FIG. 7, the push plate device P includes a push plate 13 and a crank mechanism C2. The push plate 13 is supported by a slider 44 slidably inserted into a guide rod 43 so as to be able to reciprocate laterally, and the crank mechanism C2 has a crank arm 42 fixed to a sprocket 41. . The lower surface of the slider 44 attached to the guide rod 43 has a horizontal groove provided in a direction perpendicular to the guide rod, into which a roller 42a loosely fitted at the tip of the crank arm 42 is inserted. It's fitted. With one rotation of the sprocket 41, the slider 44 makes one reciprocating motion along the guide rod 43. That is, due to this movement, the push plate 13 fixed to the upper part of the slider moves to the standby table 1.
A predetermined number of standby tile rows 45, which are already waiting in two stacks on the top of the tray, are moved to the position indicated by the dashed-dotted line on the pallet 12 which has been lowered and stopped. Furthermore, at the forward end of the piston movement, this slider 44 pushes down the protruding lever of the snap switch 46 in the opposite direction, so that the half-rotation motor 20
At the same time, an electric signal is sent to the half-rotation solenoid 21, and at the same time, the drive circuits of the chain conveyor motor 47 and the slope conveyor motor 48 (Figs. 2 and 4) are closed. conduction.

The electric signal sent to the half-rotation solenoid 21 causes the half-rotation mechanism H shown in FIG.
9, the crank mechanism C1 shown in FIG.
rises with the standby tile row 45 indicated by the dash-dotted line on it,
It comes to rest at a position on the same plane as the top plate 3. The castle wall tiles are formed by the queue of standby tiles shown by the two-dot chain lines rising onto the tabletop from all sides, and the next phase of the competition begins. The tip of the support arm 16 that protrudes from the pallet that is
7 is scooped up and the opening is closed, making it perfectly possible for the next competition to begin.

The chain conveyor motor 47 and the slope conveyor motor 48 whose drive circuits are turned on by the snap switch 46 start rotating, and the chain conveyor 9 further transmits the rotational movement to other sprockets 49, as shown in FIG. As shown in FIG. 4, a belt pulley 50 fixed coaxially with this sprocket transmits rotational motion from the turntable 5 and friction wheel 52 to the ring 6 and to the selector 7 through a belt 51. do.

As shown in FIG. 4, the group of tiles 53 thrown into the tabletop from the opening/closing port 4 mentioned at the beginning are piled up randomly on the turntable 5, and the tiles 53 are thrown into place by the rotational movement of the turntable. The group also rotates and is moved successively circumferentially by obstruction rods 54-1 shown in FIGS. 2 and 4, and further onto the outer ring by obstruction rods 54-2.

The ring 6 is at its lowest position at 55, which is lower than the top surface of the turntable, and the friction wheel 52 and three guides are positioned so that the ring 6 is at its lowest position at 55 and is several centimeters higher than the turntable at 56 on the opposite side. It is supported and rotated by a wheel 57 in an inclined state.

The tiles guided onto the ring 6 move on the ring 6, and if the tiles are in a position other than the prone position, that is, in a standing or horizontal position, they are knocked down by the obstacle bar 54-3 or are moved again. returned to the turntable. In this way, only the tiles in the prostrate position will pass directly under the selector 7.

As shown in FIG. 9, the selector 7 has a permanent magnet 59 such as ferrite continuously fixed to the lower outer circumference of a rotating disk 58, and a ring 6.
It is set at a height that allows the upper flat tile to pass through with a small gap.

Furthermore, as shown in FIG. 10, all the tiles used in the present invention have an iron weight 61 that is normally buried in the tile 60 buried in a position close to the surface of the back plate 62 of the tile. It is what is placed.

As a result, among the flat tiles passing directly under the selector 7, those with the back plate 62 facing upward are energized by the iron weights 61 inside, and fly up and are attracted to the magnets 59. At this time, the permanent magnets are arranged in alternating N and S poles as shown in Figure 9, and the iron weights inside the tiles are buried long in the longitudinal direction, so the tiles jump up and are attracted. At this time, the posture of the tiles that are attracted according to the characteristics of the magnet is
The longitudinal direction is naturally parallel to the tangent to the disk 58, and the postures of the tiles are uniformly controlled in this direction.

The flat tile passing under the back plate of the tile is outside the excitation range of the permanent magnet and passes without being attracted, and is returned to the top of the turntable 5 by the obstacle rod 54-5. At this position, the tiles are higher than the turntable, so they fall from the ring, but the tiles hit the reversing protrusion 63 provided in the middle of the falling trajectory and receive a shock, and the tiles are reversed and placed above the back plate. Move onto the turntable in this position. The moved tiles go through the process described above, and are again transferred directly below the selector where they are sucked. This is useful for increasing the adsorption efficiency of the selector and increasing the probability of attitude control.

Due to this rotational movement, the tiles attracted by the permanent magnet 59 of the selector 7 are guided by a guide plate 64 that is fixed and extended to the end of the slope conveyor 8, and are forced to move outside the selector. As a result, it escapes from the excitation zone and falls onto the slope conveyor 8. The fallen tiles are transported on this conveyor belt, and their forward movement is stopped by the stopper 65, so that their movement is stopped. At this time, the tiles are attracted and transferred by the hanger 66 of the chain conveyor 9, which is moving in the right angle direction while maintaining a small gap just above the tiles.

As shown in FIG. 11, the chain conveyor 9 is a normal chain with an attachment, and bases of hangers 66 are fixed at regular intervals, and permanent magnets such as ferrite are attached to the bottom surface of the base. 59 is fixed, and the slope conveyor 8
When passing directly above a tile in a stopped state by the stopper 65, it adsorbs it and transfers it in a quadrangular shape directly above the center line of the standby table 10 arranged on all sides while suspended in the air. be done. The tiles to be transferred are first prevented from moving by the fixed damper 67-1 at one end of the standby stand 10-1, and are separated from the permanent magnet of the hanger and land on the standby stand 10-1.

As shown in the cross-sectional view of FIG. 12, the waiting table 10 has a sawtooth-like upper surface with a pitch of the tile width, and a damper 67 is installed at the tip of the chain conveyor 9 in the direction of movement. It is equipped with the following equipment. Only the damper of the standby stand 10-1 is fixed, and the dampers of the other standby stands 10-2, 3, and 4 are movable up and down, so that the hanging tiles can normally easily pass over them. It is fixed in the lower position.

The order in which the tiles are arranged and stacked in two stages on the standby table 10 will be explained with reference to FIG. 12.
1 is transferred in the direction of the damper 67, only the tile is blocked from moving by the damper and detached from the hanger 66,
It rests on the standby table at the position 68-2. The next suspended tile is also blocked by the damper and comes to rest on 68-2, that is, at position 68-3. The next suspended tile is blocked from moving by the tile 68-3 that landed just before, and it lands and stands still at position 68-4. Next is 68-
5, then 68-6, and so on until a predetermined number (usually 34 tiles) is reached by repeating the lower and upper stages from the tip of the standby table. This predetermined number of tiles is sequentially electronically read by a photoelectric switch 69-1 provided at a position immediately after passing the damper 67-2 of the standby table 10-2. This value is input to a counter IC provided separately. When the predetermined number of tiles reaches 34, it is detected by a NAND gate IC or the like and immediately inputted as an output signal to the damper solenoid 70.

The solenoid 70 receiving the electric signal attracts the plunger, and as shown in FIG. Moves to the upper position and prevents subsequent transfer from passing tiles. As a result, the two-tier stacking and alignment work progresses on the standby stand 10-2 as in the case of the standby stand 10-1.

The photoelectric switch 69-2 located at the damper position of the standby stand 10-3 reads the predetermined number 34 x 2 = 68, and an electric signal is immediately outputted via the counter IC, NAND gate IC, etc., and the damper solenoid 70-2 is activated. As before, the damper 67-3 is moved to the upper position to prevent the tiles from passing from now on, and the work of arranging the tiles in two stages on the standby table 10-3 is started.
In this way, they are sequentially stacked in two stages on the standby stand 10-4, and a predetermined number of photoelectric switches 69-4 (34×4=
When the 136th tile, that is, the final tile, is read, the electrical signal output via the IC is sent to the push type solenoid 72 shown in FIG. is pushed forward to open the power circuits of the chain conveyor motor 47 and slope conveyor motor 48, and at the same time switch the reverse rotation circuit of the half rotation motor 20 to the forward rotation circuit. In this way, all movement stops, and the aligned tiles on the standby tables 10 on all sides stand by, waiting for their next turn.

At the end of the phase of the competition being continued on the tabletop, the start switch 14 is pressed again, and from then on, this series of cycles is repeated, and the competition unfolds and progresses one after another. It is something.

Damper 67-2 in the above-mentioned upper position,
3 and 4 are pushed down by a separate protruding part from the pallet 12 that descends at the beginning of the competition, and are hooked by the tip of the damper solenoid and returned to their original positions.

As explained above, according to the present invention, the push plate 13 is reciprocated based on the single rotation mechanism O, and the pallet 12 is moved up and down based on the half rotation mechanism H.
The movement timings of the lowering and resting of the pallet 12, the reciprocating movement of the push plate 13, and the raising of the pallet 12 can be set with sufficient margin, and
The switches 32 and 46 confirm the movement positions of the pallet 12 and push plate 13, and the next operation begins.
The movement timing of the pallet 12 and the push plate 13 can be made accurate and reliable. Furthermore, palette 1
2 is moved up and down by the crank mechanism C1, so acceleration and deceleration are smooth in the ascending and descending positions, and the amount of movement of the pallet 12 relative to the rotation angle of the crankshaft 29 is small, making it possible to position and hold the pallet at an accurate position. Also, since the push plate 13 is moved laterally by the crank mechanism C2, the push plate 1
3 is started and turned by smooth acceleration and deceleration by a sine curve, and the tiles stacked in two tiers are gently pushed out from the standby stand 10 to the pallet 12, and the tiles stacked in two tiers can be reliably transferred without breaking them. As a result of the above effects, it is possible to reliably transfer the two-tier stacked tiles from the standby stand 10 to the pallet 12, and furthermore, to align the pallet 12 on which the two-tier stacked tiles are placed on the top plate, making it easy and simple. Although it has a small configuration, it is possible to obtain a highly reliable automatic mahjong table by eliminating the two-tier stacked tiles (piles) collapsing that often occurred conventionally.

[Brief explanation of drawings]

FIG. 1 is an external perspective view of an automatic mahjong table incorporating the device of the present invention, FIG. 2 is a plan view of the internal mechanism, and FIG.
The figure is a vertical sectional view taken along line A-A in Figure 2, Figure 4 is a partially cutaway perspective view of the internal mechanism, Figure 5 is a partially cutaway perspective view of the opening/closing device, and Figure 6 is a half-rotation mechanism. FIG. 7 is a sectional view of the crank mechanism, pallet and push plate device, FIG. 8 is a perspective view of the single rotation mechanism, FIG. 9 is a perspective view of the selector as seen from below, and FIG. 10 is a perspective view of the selector.
FIG. 11 is a perspective view of the tiles with a portion cut away, FIG. 11 is a perspective view of the chain conveyor seen from below, and FIG. 12 is a cross-sectional view showing the waiting table, the damper portion, and the arrangement order of the tiles. 1... Automatic mahjong table, 3... Top board, 10... Standby table, 12... Palette, 13... Push board, 32, 4
6...Switch, C1, C2...Crank mechanism,
H...Half-rotation mechanism, O...Single-rotation mechanism.

Claims (1)

[Claims] 1. The tiles stacked in two tiers on the standby table are transferred to the pallet in the lowered position using a push plate, and the pallet with the tiles stacked in two tiers is then raised so as to be aligned with the top plate. In the tile transfer and lifting device at an automatic mahjong table, the push plate is supported so that it can freely reciprocate in the horizontal direction, is connected to a crank mechanism that is linked to a single rotation mechanism, and also supports the pallet so that it can freely reciprocate in the vertical direction. At the same time, a switch is connected to the crank mechanism that is linked to the half-rotation mechanism and detects the predetermined position of the push plate and pallet, and the half-rotation mechanism is driven to lower the pallet. A device for transferring and raising tiles at an automatic mahjong table, which is configured to reciprocate a push plate based on a single rotation mechanism and then raise a pallet by driving a half rotation mechanism again.