Automatic mahjong machine front flip switching and stacking system and automatic mahjong machine

Abstract

The utility model relates to an automatic mahjong machine, specifically discloses an automatic mahjong machine front turnover switching card stacking system, including installation platform (1), be equipped with card stacking support and power structure (4) on the installation platform (1), the card stacking support includes first card stacking support (2) and with first card stacking support (2) hinged second card stacking support (3), the free end of first card stacking support (2) can rotate upwards or downwards under the drive of power structure (4). The utility model discloses an automatic mahjong machine including automatic mahjong machine front turnover switching card stacking system. The automatic mahjong machine front turnover switching card stacking system of the utility model is simple in structure, and card stacking efficiency is high.

Description

Technical Field

[0001] This utility model relates to entertainment equipment, specifically, to an automatic mahjong machine with a front-flipping and card-switching system. Furthermore, this utility model also relates to an automatic mahjong machine including the aforementioned front-flipping and card-switching system. Background Technology

[0002] Automatic mahjong machines are a popular leisure and entertainment tool, available in various types, including single-player, four-player, and eight-player machines. Regardless of the type, their internal structure typically includes: a circuit system, a shuffling system, a conveying system, a stacking system, and a raising system. Currently, the working principle of an automatic mahjong machine is as follows: the playing cards enter the shuffling drum inside the machine and rotate on the shuffling plate below it. Because the back of the cards contains magnets, they are attracted by a magnetic ring on the shuffling drum. The cards held by the magnetic ring rotate with it and are conveyed to the stacking position by the conveying system. After the cards are stacked, they are finally sent to the tabletop by the raising system.

[0003] In existing technology, after the playing cards are attracted by the magnetic ring, they rotate with the magnetic ring and are conveyed to the stacking position by the conveyor belt of the conveyor system. First, the playing cards are arranged horizontally on the conveyor belt and moved to the stacking position by the conveyor belt. Then, the receiving platform at the stacking position will drop by the thickness of one playing card. Then, the conveyor belt will send another playing card, so that the two playing cards are stacked together. The two stacked playing cards are pushed out by the card pusher. This process is repeated until the stacking of two layers of playing cards arranged horizontally is completed.

[0004] In existing card stacking methods, only two cards can be stacked vertically at a time, and a pushing action is performed after stacking two cards, which is very cumbersome, time-consuming, and inefficient.

[0005] In view of this, there is a need to provide an automatic mahjong machine front-flipping and stacking system to solve or overcome the above-mentioned technical problems. Utility Model Content

[0006] One of the technical problems to be solved by this utility model is to provide an automatic mahjong machine front-flipping and card-stacking system. This automatic mahjong machine front-flipping and card-stacking system has a simple structure and high card-stacking efficiency.

[0007] In addition, another technical problem solved by this utility model is to provide a mahjong machine with an automatic mahjong machine front flip switching stacking system that has a simple structure and high stacking efficiency.

[0008] To solve the above-mentioned technical problems, this utility model provides an automatic mahjong machine front-flipping and card-stacking system, including an installation platform. The installation platform is provided with a card-stacking bracket and a power structure. The card-stacking bracket includes a first card-stacking bracket and a second card-stacking bracket hinged to the first card-stacking bracket. The free end of the first card-stacking bracket can rotate upward or downward under the drive of the power structure.

[0009] In a preferred embodiment of this utility model, the installation platform is further provided with a card-receiving platform, and the free end of the first card-stacking bracket is located at the outlet of the card-receiving platform.

[0010] Furthermore, the card-receiving platform is formed into an arc-shaped structure, and the width of the card-receiving platform is set to be able to adapt to the length of the chess and cards, so that the chess and cards can be arranged side by side along its width direction.

[0011] Furthermore, baffles are provided on both sides of the card-receiving platform.

[0012] Furthermore, the height of the card-receiving platform is set to be at least the thickness of one of the playing cards, so that when the free end of the first card-stacking bracket is at its upper limit position, the free end of the first card-stacking bracket is aligned with the upper surface of the card-receiving platform, allowing the playing cards to be moved onto the first card-stacking bracket for arrangement via the card-receiving platform. When the free end of the first card-stacking bracket is at its lower limit position, the height difference between the free end of the first card-stacking bracket and the card-receiving platform is at least the thickness of one playing card, allowing the playing cards to be moved onto the first layer of playing cards on the first card-stacking bracket via the card-receiving platform.

[0013] In another preferred embodiment of the present invention, the first card stacking bracket includes a top flap and side plates connected to both sides of the top flap along its length, wherein the side plates are triangular flat plate structures and the top flap is a rectangular flat plate; or the first card stacking bracket includes two interconnected top flaps and side plates connected to both sides of the top flap along its length, wherein the side plates are formed by connecting a triangular flat plate and a trapezoidal flat plate, and the top flap is formed by connecting two rectangular flat plates.

[0014] In another preferred embodiment of the present invention, the second stacking card support includes two side panels and a top plate connected to the upper long side of the side panels, and the top flap is hinged to the top plate.

[0015] As a specific structural form of this utility model, the power structure includes a rotating shaft, a rocker arm, a connecting rod, a crank, and a motor. The crank is connected to the motor, and one end of the crank is hinged to the connecting rod. The other end of the connecting rod is hinged to the first end of the rocker arm. The second end of the rocker arm is perpendicularly connected to the rotating shaft. A protruding structure is connected to the rotating shaft. The protruding structure can abut against the lower part of the first card holder so as to enable the first card holder to rotate; or the power structure is a cylinder or a hydraulic cylinder.

[0016] Specifically, the side of the protruding structure away from the axis of rotation is an arc surface.

[0017] Specifically, arc-shaped mounting seats are respectively fitted on both sides of the protruding structure on the rotating shaft, and mounting blocks are symmetrically connected on both sides of the arc-shaped mounting seats, with mounting holes provided on the mounting blocks.

[0018] More specifically, the mounting block is disposed on the mounting platform and connected to the mounting platform through the mounting hole.

[0019] In another specific structural form of this utility model, the motor is connected to the mounting platform; or the motor is connected to the mounting platform via a motor bracket.

[0020] In addition, this utility model also provides a mahjong machine, which includes the automatic mahjong machine front-flipping and stacking system of any of the above technical solutions.

[0021] Compared with the prior art, the beneficial effects of this utility model are as follows: This utility model discloses an automatic mahjong machine front-flipping and stacking system, which includes an installation platform. The installation platform is equipped with a stacking bracket, a card-receiving platform, and a power structure. The stacking bracket includes a first stacking bracket and a second stacking bracket hinged to the first stacking bracket. The free end of the first stacking bracket is located at the outlet of the card-receiving platform. The width of the card-receiving platform is set to accommodate the length of the mahjong tiles. The power structure can drive the free end of the first stacking bracket to rotate upward or downward, so that the mahjong tiles can be arranged side by side on the first stacking bracket along its width direction and can form at least two layers from bottom to top. This utility model has a simple structure, avoids the action of repeatedly stacking two mahjong tiles, and instead completes the arrangement of the first layer of mahjong tiles in one go, and then completes the stacking of the second layer of mahjong tiles. It is very convenient, time-saving, and has high stacking efficiency.

[0022] Other features and advantages of this invention will be described in detail in the following detailed description section. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the power structure of a specific embodiment of the present invention; Figure 2 This is one of the structural schematic diagrams of an automatic mahjong machine front-flipping and stacking tile system according to a specific embodiment of this utility model; Figure 3 This is the second structural schematic diagram of the automatic mahjong machine front-flipping and stacking tile system, which is a specific embodiment of this utility model; Figure 4 This is the third structural schematic diagram of the automatic mahjong machine front-flipping and stacking tile system, which is a specific embodiment of this utility model; Figure 5 This is the fourth structural schematic diagram of the automatic mahjong machine front-flipping and stacking tile system, which is a specific embodiment of this utility model; Figure 6 This is one of the working process diagrams of the automatic mahjong machine front-flipping and stacking card system according to a specific embodiment of this utility model; Figure 7 This is the second diagram illustrating the working process of the automatic mahjong machine's front-flipping and stacking tile system, which is a specific embodiment of this utility model. Figure 8 This is the third diagram illustrating the working process of the automatic mahjong machine's front-flipping and stacking tile system, which is a specific embodiment of this utility model. Explanation of reference numerals in the attached figures 1. Installation platform 2. First stack of cards bracket 201 Top flip panel 202 Side panel 3 Second stack of cards bracket 301 panel 302 Top Plate 4 Power Structure 401 Joystick 402 Link 403 crank 404 motor 405 shaft, 4051 protruding structure 406 arc-shaped mounting base 4061 mounting block 5. Card holders 6. Chess and card games 7 baffles Detailed Implementation

[0024] The specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are for illustration and explanation only and are not intended to limit the scope of this utility model.

[0025] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "set" or "connection" should be interpreted broadly. For example, the term "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0026] In this utility model, unless otherwise stated, the directional terms used are based on the orientation or positional relationship shown in the drawings, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. The directional terms of this utility model should be understood in conjunction with the actual installation state.

[0027] The present invention will now be described in detail with reference to the accompanying drawings.

[0028] like Figures 1 to 8 As shown, this utility model provides an automatic mahjong machine front-flipping and card-stacking system, including an installation platform 1. The installation platform 1 is provided with a card-stacking bracket and a power structure 4. The card-stacking bracket includes a first card-stacking bracket 2 and a second card-stacking bracket 3 hinged to the first card-stacking bracket 2. The free end of the first card-stacking bracket 2 can rotate upward or downward under the drive of the power structure 4.

[0029] In the above basic embodiment of this utility model, the mounting platform 1 is the load-bearing structure inside the automatic mahjong machine. It can be made of metal or plastic, or other suitable materials. It can be a one-piece structure or a spliced ​​structure. Its main function is to install the stacking bracket and power structure 4, etc., in this utility model. The mounting platform 1 can also be connected to other mounting structures inside the automatic mahjong machine. For example, fasteners can be used to connect the mounting platform 1 to the shuffling plate of the shuffling system, thereby making the internal structure of the mahjong machine more compact. It should be noted that the outer periphery of the mounting platform 1 is connected to the frame of the automatic mahjong machine, and the central area of ​​the mounting platform 1 is connected to the shuffling plate. The shape of the mounting platform 1 is mainly determined by the shape of the automatic mahjong machine. For example, for a square mahjong machine, the mounting platform 1 can be square; for a triangular mahjong machine, the mounting platform 1 can be triangular.

[0030] It should be noted that the card stacking bracket and the power structure 4 are mounted on the upper surface of the mounting platform 1. The card stacking bracket can be made of metal or plastic, or other suitable materials, such as... Figure 5As shown, the card stacking bracket includes a first card stacking bracket 2 and a second card stacking bracket 3. The connection method between the second card stacking bracket 3 and the upper surface of the mounting platform 1 is selected according to the material. For example, for a metal second card stacking bracket 3 and the mounting platform 1, welding or fasteners can be used for connection. The first card stacking bracket 2 is a movable structure. One end of it is a hinged end that is hinged to the second card stacking bracket 3, and the other end is a free end. Driven by the power structure 4, the first card stacking bracket 2 can rotate around its hinged end. When stacking cards, the first card stacking bracket 2 rotates to a suitable position, so that the cards 6 can be arranged in a layer on the card stacking bracket. Then the card stacking bracket will lower a suitable height, so that the cards 6 can be stacked on the upper surface of the first layer of cards 6, thereby completing the stacking of multiple layers of cards 6 on the card stacking bracket.

[0031] In a preferred embodiment of this utility model, the mounting platform is further provided with a card receiving platform 5. The free end of the first card stacking bracket is located at the outlet of the card receiving platform 5 to receive the cards 6 output from the card receiving platform 5. The card receiving platform 5 can be made of the same material as the card stacking bracket, or other suitable materials can be used. The card receiving platform 5 and the mounting platform 1 can be connected by fasteners. The card receiving platform 5 can serve as a conveying channel for the cards 6, guiding the cards 6 shuffled by the shuffling plate of the shuffling system to the card stacking bracket. It is conceivable that the card receiving platform 5, located between the shuffling system and the card stacking bracket, is a key component connecting the shuffling system and the card stacking bracket.

[0032] Furthermore, the card receiving platform 5 can be configured as an arc-shaped structure, and its width direction is set to accommodate the length of the cards 6, thereby facilitating the side-by-side arrangement of multiple cards 6 along their width direction on the card receiving platform 5 and their delivery to the first stacking bracket 2. Specifically, firstly, the cards 6 shuffled from the shuffling tray enter the card receiving platform 5, then the card receiving platform 5 delivers the cards 6 to the first stacking bracket 2, and finally, the cards 6 are arranged along their width direction on the stacking bracket, thus completing the stacking process. To improve shuffling efficiency and facilitate the entry of cards 6 from the shuffling tray into the card receiving platform 5, a conveyor belt and a magnetic ring can also be configured on the card receiving platform 5 of this invention. The magnetic ring can be set at the entrance of the card receiving platform 5, and can attract the cards 6 on the shuffling tray and deliver them from the exit of the card receiving platform 5 to the stacking bracket via the conveyor belt. Of course, other suitable components can be configured on the card receiving platform 5 according to actual needs, all of which fall within the protection scope of this invention.

[0033] Furthermore, baffles are provided on both sides of the card holder 5 to prevent the cards on the card holder 5 from falling to the sides of the card holder 5.

[0034] Furthermore, the height of the card-receiving platform 5 is set to be at least the thickness of one card 6. When the free end of the first card-stacking bracket 2 is at its upper limit position under the drive of the power structure 4, the free end of the first card-stacking bracket 2 is aligned with the upper surface of the card-receiving platform 5, thereby facilitating the movement of the card 6 onto the first card-stacking bracket 2 via the card-receiving platform 5 for arrangement. When stacking the second layer of card 6, the free end of the first card-stacking bracket 2 is at its lower limit position, that is, the height difference between the free end of the first card-stacking bracket 2 and the card-receiving platform 5 is at least the thickness of one card 6, thereby enabling the card 6 to move onto the upper surface of the first layer of card 6 on the first card-stacking bracket 2 via the card-receiving platform 5 for stacking.

[0035] As another preferred embodiment of this utility model, from Figure 2 As can be seen, the first stack of cards support 2 is formed in a wedge shape, including a top flap 201 and side plates 202 connected to both sides of the top flap 201 along its length. The side plates 202 are triangular flat plate structures, and the top flap 201 is a rectangular flat plate. The side plates 202 and the top flap 201 can be connected by fasteners or welded together. Of course, the first stack of cards support 2 can also include two interconnected top flaps 201 and side plates 202 connected to both sides of the top flap 201 along its length. The side plates 202 are formed by connecting a triangular flat plate and a trapezoidal flat plate, and the top flap 201 is formed by connecting two rectangular flat plates. Similarly, they can be connected by fasteners or welded together. It should be noted that during the rotation of the first stack of cards support 2, when the top flap 201 is aligned with the upper surface of the bottom plate 502, the free end of the first stack of cards support 2 is in the right position, and the cards 6 begin to be arranged from the card support platform 5 to the stack of cards support. After the first layer of cards 6 is arranged, the top flap 201 is lowered so that the upper surface of the first layer of cards 6 is aligned with the upper surface of the bottom plate 502, and the cards 6 are stacked from the card support platform 5 onto the first layer of cards 6 to form the second layer.

[0036] In another preferred embodiment of this utility model, the second stack of cards support 3 includes two side panels 301 and a top plate 302 connected to the upper long side of the side panels 301. The top flap 201 is hinged to the top plate 302 so that the first stack of cards support 2 can rotate around its hinged end. The side panels 301 and the top plate 302 can be connected by fasteners. Of course, other suitable connection methods can also be used according to the actual situation, all of which are within the protection scope of this utility model.

[0037] As a specific structural form of this utility model, such as Figure 1As shown, the power structure 4 includes a rotating shaft 405, a rocker arm 401, a connecting rod 402, a crank 402, and a motor 404. The crank 402 is a component capable of full rotation, while the rocker arm 401 can only reciprocate within a certain angle range. The connecting rod 402 connects the rocker arm 401 and the crank 402. In this invention, the crank 402 is connected to the motor 404, and under the drive of the motor 404, the crank 402 can rotate. One end of the crank 402 is hinged to the connecting rod 402, and the other end of the connecting rod 402 is hinged to the first end of the rocker arm 401. Under the drive of the crank 402... The rocker arm 401 swings within a certain angle range. The second end of the rocker arm 401 is perpendicularly connected to the rotating shaft 405. The rotating shaft 405 can rotate under the cooperation of the crank 402, connecting rod 402 and rocker arm 401. A protruding structure 4051 is connected to the rotating shaft 405. The protruding structure 4051 abuts against the lower part of the first card holder 2. When the rotating shaft 405 rotates, the protruding structure 4051 can make the first card holder 2 rotate upward or downward. Of course, the power structure 4 can also be a cylinder or a hydraulic cylinder. Through the reciprocating motion of the cylinder or hydraulic cylinder, the first card holder 2 is driven to rotate upward or downward.

[0038] Specifically, the side of the protruding structure 4051 away from the rotating shaft 405 is an arc surface. This arc surface contacts the bottom of the first card holder 2 and can abut against the bottom of the first card holder 2. With the rotation of the protruding structure 4051, the first card holder 2 can rotate upward or downward accordingly, and the rotation process is smooth. It is conceivable that a wear-resistant layer or wear-resistant structure can also be provided on the arc surface of the protruding structure 4051 to extend its service life.

[0039] Specifically, arc-shaped mounting seats 406 are respectively fitted onto both sides of the protruding structure 4051 on the rotating shaft 405. Mounting blocks 4061 are symmetrically connected to both sides of the arc-shaped mounting seats 406. Mounting blocks 4061 have mounting holes to facilitate fixing the rotating shaft 405 portion of the power structure 4 to the mounting platform 1 below the card stacking bracket. By setting the arc-shaped mounting seats 406, the installation of the power structure 4 becomes more stable, preventing vibration when the first card stacking bracket 2 rotates.

[0040] More specifically, mounting block 4061 is disposed on mounting platform 1, and mounting holes are directly connected to mounting platform 1 via fasteners, such as... Figure 4 As shown, the mounting block 4061 can also be connected to the mounting platform 1 via a mounting bracket. The mounting bracket and the mounting platform 1 can be connected first with fasteners, and then the mounting block 4061 can be installed on the mounting bracket. It can be imagined that the mounting bracket is located below the stacked card bracket.

[0041] As another specific structural form of this utility model, the motor 404 is connected and fixed to the mounting platform 1; or, as... Figure 3As shown, the motor 404 is connected to the mounting platform 1 through the motor 404 bracket. The motor 404 bracket is set on the mounting platform 1. Of course, the motor 404 bracket can also be set in other suitable positions according to the actual situation, all of which are within the protection scope of this utility model.

[0042] from Figures 5 to 8 As can be seen, under the preferred embodiment, the working process of the automatic mahjong machine front-flipping and stacking tile system of this utility model is as follows: First, the first stack of cards support 2 rotates to the upper limit position under the drive of the power structure 4, so that the top flip plate 201 is aligned with the upper surface of the card support platform 5. Then, the card games 6 are arranged in the first layer from the card holder 5 to the card stacking bracket along their width direction; Next, the first stack of cards support 2 rotates downward under the drive of the power structure 4, so that the upper surface of the first layer of cards 6 is aligned with the upper surface of the card support platform 5. Finally, another row of cards 6 moves forward from the card holder 5 along its width and eventually stacks on the upper surface of the first row of cards 6, forming two rows of cards 6.

[0043] In summary, the automatic mahjong machine front-flipping and stacking mechanism of this utility model includes an installation platform 1, on which a stacking bracket, a receiving platform 5, and a power structure 4 are provided. The stacking bracket includes a first stacking bracket 2 and a second stacking bracket 3 hinged to the first stacking bracket 2. The free end of the first stacking bracket 2 is located at the outlet of the receiving platform 5. The width of the receiving platform 5 is set to be able to adapt to the length of the mahjong tiles 6. The power structure 4 can drive the free end of the first stacking bracket 2 to rotate upward or downward so that the mahjong tiles 6 can be arranged side by side along its width direction and can be formed into at least two layers from bottom to top. The structure is simple and can stack multiple layers of mahjong tiles 6 from bottom to top, with high stacking efficiency.

[0044] Furthermore, this utility model also provides a mahjong machine, wherein the mahjong machine includes the automatic mahjong machine front-flipping and stacking mechanism described in any of the above-mentioned technical solutions. When the automatic mahjong machine front-flipping and stacking mechanism of any of the above-mentioned basic or preferred embodiments is applied, the mahjong machine also possesses the aforementioned advantages.

[0045] The preferred embodiments of the present invention have been described in detail above with reference to the accompanying drawings. However, the present invention is not limited to the specific details of the above embodiments. Within the scope of the technical concept of the present invention, various simple modifications can be made to the technical solution of the present invention, and these simple modifications all fall within the protection scope of the present invention.

[0046] It should also be noted that the various specific technical features described in the above embodiments can be combined in any suitable manner without contradiction. To avoid unnecessary repetition, this utility model will not describe the various possible combinations separately.

[0047] Furthermore, various different embodiments of this utility model can be combined in any way, as long as they do not violate the spirit of this utility model, they should also be regarded as the content disclosed by this utility model.

Claims

1. An automatic mahjong machine front-flipping and stacking tile system, characterized in that, The system includes an installation platform (1), on which a card stacking bracket and a power structure (4) are provided. The card stacking bracket includes a first card stacking bracket (2) and a second card stacking bracket (3) hinged to the first card stacking bracket (2). The free end of the first card stacking bracket (2) can rotate upward or downward under the drive of the power structure (4).

2. The automatic mahjong machine front-flipping and stacking system according to claim 1, characterized in that, The installation platform (1) is also provided with a card holder (5), and the free end of the first card stacking bracket (2) is located at the outlet of the card holder (5).

3. The automatic mahjong machine front-flipping and stacking system according to claim 2, characterized in that, The card holder (5) is formed in an arc shape, and the width of the card holder (5) is set to be able to fit the length of the chess and card (6) so that the chess and card (6) can be arranged side by side along its width.

4. The automatic mahjong machine front-flipping and stacking system according to claim 3, characterized in that, The plate holder (5) is provided with baffles (7) on both sides.

5. The automatic mahjong machine front-flipping and stacking system according to claim 4, characterized in that, The height of the card holder (5) is set to be at least the thickness of one of the cards (6), so that when the free end of the first card holder (2) is at the upper limit position, the free end of the first card holder (2) is aligned with the upper surface of the card holder (5), so that the cards (6) can be moved to the first card holder (2) for arrangement through the card holder (5). When the free end of the first card holder (2) is at the lower limit position, the height difference between the free end of the first card holder (2) and the card holder (5) is at least the thickness of one of the cards (6), so that the cards (6) can be moved to the first layer of cards (6) on the first card holder (2) through the card holder (5).

6. The automatic mahjong machine front-flipping and stacking system according to claim 1, characterized in that, The first stacking bracket (2) includes a top flap (201) and side plates (202) connected to both sides of the top flap (201) along its length, wherein the side plates (202) are triangular flat plate structures and the top flap (201) is a rectangular flat plate; or The first stack of cards support (2) includes two interconnected top flaps (201) and side plates (202) connected to both sides of the top flaps (201) along their length direction. The side plates (202) are formed by connecting a triangular plate and a trapezoidal plate, and the top flaps (201) are formed by connecting two rectangular plates.

7. The automatic mahjong machine front-flipping and stacking system according to claim 6, characterized in that, The second stacking bracket (3) includes two side panels (301) and a top plate (302) connected to the upper long side of the panel (301), and the top flap (201) is hinged to the top plate (302).

8. The automatic mahjong machine front-flipping and stacking system according to claim 1, characterized in that, The power structure (4) includes a rotating shaft (405), a rocker arm (401), a connecting rod (402), a crank (403), and a motor (404). The crank (403) is connected to the motor (404). The crank (403) is hinged to one end of the connecting rod (402). The other end of the connecting rod (402) is hinged to the first end of the rocker arm (401). The second end of the rocker arm (401) is perpendicularly connected to the rotating shaft (405). A protruding structure (4051) is connected to the rotating shaft (405). The protruding structure (4051) can abut against the lower part of the first card holder (2) to enable the first card holder (2) to rotate; or The power structure (4) is a cylinder or a hydraulic cylinder.

9. The automatic mahjong machine front-flipping and stacking system according to claim 8, characterized in that, The side of the protruding structure (4051) away from the rotating shaft (405) is an arc surface.

10. The automatic mahjong machine front-flipping and stacking system according to claim 9, characterized in that, The two sides of the protruding structure (4051) on the rotating shaft (405) are respectively fitted with arc-shaped mounting seats (406), and mounting blocks (4061) are symmetrically connected on both sides of the arc-shaped mounting seats (406), and mounting holes are provided on the mounting blocks (4061).

11. The automatic mahjong machine front-flipping and stacking system according to claim 10, characterized in that, The mounting block (4061) is disposed on the mounting platform (1) and is connected to the mounting platform (1) through the mounting hole.

12. The automatic mahjong machine front-flipping and stacking system according to claim 8, characterized in that, The motor (404) is connected to the mounting platform (1); or The motor (404) is connected to the mounting platform (1) via a motor bracket.

13. An automatic mahjong machine, characterized in that, The automatic mahjong machine includes the automatic mahjong machine front-flipping and stacking system according to any one of claims 1 to 12.

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