CN115487486A

CN115487486A - Card up-down turnover mechanism

Info

Publication number: CN115487486A
Application number: CN202210455832.7A
Authority: CN
Inventors: 玉置优也
Original assignee: Taiyo Kagaku KK
Current assignee: Taiyo Kagaku KK
Priority date: 2021-06-17
Filing date: 2022-04-27
Publication date: 2022-12-20
Also published as: JP2023000049A; JP7317387B2

Abstract

The invention provides a card turning mechanism which solves the problem that a game cannot be started quickly due to the fact that the cards are not matched and displayed in a vertical direction, particularly hands are not matched. The card up-down turning mechanism of the present invention has: a sucking-up and conveying unit that sucks and conveys the cards agitated by the shuffling unit at a constant speed while maintaining the sucked state, the shuffling unit shuffling the cards used in the previous game and dropped from the upper surface of the housing; a card up-and-down detection member provided midway along the conveyance path of the suction conveyance unit and detecting whether a card being conveyed is facing upward or downward; and a vertical reversing unit provided in the middle of the conveyance path downstream of the card vertical detection unit, for horizontally reversing the card facing downward to face upward by the card vertical detection unit. The card stack and the hand can be quickly and reliably aligned up and down, the structure can be simplified, and the structure for turning the cards up and down in the limited housing does not occupy a large space.

Description

Card up-down turnover mechanism

Technical Field

The present invention relates to a card turning mechanism for making the cards matched up and down consistent before the next game is started.

Background

For example, patent document 1 and the like describe an automatic mahjong table that saves the labor and time of a player by arranging a pile and a match in advance before starting the next game. Patent document 1 discloses a structure in which a top plate having a tile inlet with an opening/closing cover for introducing tiles into a mahjong table below the top plate is provided on the upper surface of the automatic mahjong table, and the mahjong table includes: a card stirring member that stirs the input cards; a card drawing member that draws the agitated card from the card agitating member; a card guide member that guides the card taken out from the card taking-out member; a stacking part that stacks the guided-out cards into 3 layers; a conversion part which converts the stacked card column into two layers and 1 layer; and a card lifting member that lifts the modified card array onto the top plate.

Patent document 1 and the like are structures in which a magnet is provided in an intermediate position between a display surface on which a type of a card is drawn and a back surface thereof (or in the case of using a magnetic metal piece, near the back surface side) inside a card used in the automatic mahjong table having the above-described structure, and the magnetic properties of the card are used to align the front and back surfaces of all the cards in a stack and a batch.

However, in patent document 1, for example, the back surface can be made to coincide with the top surface, but the vertical direction of the cards is not made to coincide, and when starting the next game, the cards are arranged at the hand, but the vertical direction of the card display is not made to coincide with each other, so that the player takes time to make the vertical direction coincide with each other, which prevents the game from starting quickly.

Documents of the prior art

Patent document

Patent document 1: japanese laid-open patent publication No. 2004-24804

Disclosure of Invention

Problems to be solved by the invention

The problems to be solved by the present invention are as follows: since the match display shows a difference in vertical direction, particularly, a difference in hand, the game cannot be started quickly.

Means for solving the problems

In order to solve the above-mentioned problems, the present invention provides a tile turning mechanism for aligning the vertical orientation of tiles in an automatic mahjong table for shuffling playing tiles in a housing below a top plate for playing and arranging the tiles in a tile stack and a hand, the tile turning mechanism comprising: a sucking-up and conveying unit that sucks up the cards agitated by the shuffling unit and conveys the cards at a constant speed while maintaining the sucked state, the shuffling unit shuffling the cards thrown from the upper surface of the housing and used in the previous game; a card up-and-down detection member provided midway along the conveyance path of the suck-up conveyance unit and detecting whether a card being conveyed is facing up or down; and an up-down turning unit provided midway along a conveyance path downstream of the card up-down detecting unit, the up-down turning unit turning the card facing downward horizontally upward by the card up-down detecting unit.

ADVANTAGEOUS EFFECTS OF INVENTION

In the card turning mechanism of the present invention, the card up-and-down mechanism detects the up-and-down direction of the card without stopping the conveyance in the middle of the constant speed conveyance from the shuffling portion to the hand forming portion by the up-and-down conveyance detecting means, and turns the card that is detected as being directed downward based on the detection horizontally upward by the up-and-down turning portion without reducing the conveyance speed by the up-and-down conveyance portion in the same manner as the detection.

Drawings

FIG. 1 is a view showing a schematic configuration of a main part of an automatic mahjong table on which a tile turning mechanism of the present invention is mounted.

Fig. 2 shows a schematic configuration of the card turning mechanism of the present invention, in which fig. 2 (a) is a perspective view and fig. 2 (b) is a view taken along direction a of fig. 2 (a).

Fig. 3 (a) to 3 (d) are views showing tiles used in the automatic mahjong table equipped with the tile vertically-turning mechanism of the present invention.

Fig. 4 (a) to 4 (c) are views for explaining the state of the conveyance of the cards from the shuffling unit in the card vertically-overturning mechanism of the present invention.

Fig. 5 (a) to 5 (c) are views for explaining the conveyance state of the card from the vertical turning section in the card vertical turning mechanism of the present invention.

Fig. 6 (a) to 6 (d) are views for explaining the card up-down detection state by the card up-down detecting means in the card up-down reversing mechanism of the present invention.

Fig. 7 (a) to 7 (e) are views for explaining a state of turning the card upside down by the upside-down turning unit in the card upside-down turning mechanism of the present invention.

FIG. 8 (a) to FIG. 8 (c) are views for explaining the formation of a hand by the hand forming part of the automatic mahjong table on which the tile turning mechanism of the present invention is mounted.

Description of the reference numerals

1. (automatic) a mahjong table; 2. a housing; 3. a shuffling section; 4. an upper suction conveying part; 4A, upward sucking a drum; 4B, conveying drums; 5. a magnet detection sensor (card up-down detection means); 6. a card detection sensor (card up-down detection means); 7. an up-down turning part; 8. a card pile forming part; 9. a hand forming part.

Detailed Description

The present invention solves the problem that a game cannot be started quickly due to the upper and lower inconsistency of the dealing display by a structure comprising: a sucking-up and conveying unit that sucks up the cards agitated by the shuffling unit and conveys the cards at a constant speed while maintaining the sucked state, the shuffling unit shuffling the cards thrown from the upper surface of the housing and used in the previous game; a card up-and-down detection member provided midway along the conveyance path of the suction conveyance unit and detecting whether a card being conveyed is facing upward or downward; and an up-down turning unit provided midway along a conveyance path downstream of the card up-down detecting unit, the up-down turning unit turning the card facing downward horizontally upward by the card up-down detecting unit.

With the current sensor (detecting means) technology, it is possible to detect the vertical position of a card being conveyed at a high speed. However, even if the vertical detection is possible, when the cards conveyed at a constant speed at a high speed are turned upside down without lowering the conveying speed and changing the conveying path, another path cannot be provided in the limited housing, and the suction conveying unit and the cards being conveyed maintain the suction state, and therefore it is difficult to release the suction and turn over the cards.

Therefore, in the present invention, the vertical turning unit horizontally turns the vertical direction of the cards around the suction position of the cards, and thereby the orientation of the cards can be made uniform upward or downward while the suction conveying unit and the cards being conveyed are maintained in a suction state and without stopping the driven cards being conveyed at a constant speed through the conveying path.

In the above configuration of the present invention, the following configuration may be adopted: a magnetic body having a polarity is embedded in each card, and a magnetic body having a polarity to be attracted to the magnetic body of the card is incorporated in the upper attraction conveying unit.

With the above configuration, the magnetic bodies embedded in the card suction and transport unit and the magnetic bodies embedded in the cards can be made to attract each other with their polarity characteristics, so that the cards sucked by the card suction and transport unit can be unified into a surface (a surface on which the card types are drawn) or a back surface (a surface opposite to the surface on which the card types are drawn).

That is, only the cards on the target front surface or the target back surface in the shuffling unit are sucked by the sucking and conveying unit, and therefore, there is no need to additionally determine the front or back surface or to turn the front or back surface upside down, and since electronic components and sensors are not used when determining the front or back surface, simplification of the device and control and circuit configuration and reduction in cost can be achieved.

In the above configuration of the present invention, the vertically-reversing section may be configured as follows: the card feeding device is provided with a sucking and conveying part which is used for sucking and conveying cards at a fixed speed, and a part of the front surface of the sucking and conveying part in the conveying direction of the cards is abutted with the sucking and conveying part, wherein the sucking and conveying part is protruded from the direction orthogonal to the conveying path on the conveying path. For example, if the card is gripped and turned horizontally, the conveying speed may be reduced, and if the card is turned horizontally by applying an impact to the side face of the card, the card may be separated from the conveying path by the impact applied to the central position in the front-rear direction of the card.

Therefore, by abutting against a part of the front surface of the card being conveyed while maintaining the suction state as in the above-described configuration and horizontally turning the card about the suction position, it is possible to reliably turn the card upside down without reducing the conveying speed of the card.

[ examples ]

Hereinafter, examples of the present invention will be described. The card vertically-overturning mechanism of the present invention is configured as described below in a so-called automatic mahjong table 1, and the automatic mahjong table 1 uses a combination of two decks, one deck is arranged on the upper surface of a top plate for the current game, and the other deck 1 is housed in a casing 2 after the previous game, shuffled in the casing 2, and placed in a stack of cards and hands for the next game. In the following description, the components that are not directly related to the card turning-up/down mechanism of the present invention or components that have a conventional structure and need no particular description will be omitted from the drawings and not denoted by reference numerals.

First, in this example, mahjong tiles P (hereinafter, referred to as tiles P) used in the automatic mahjong table 1 will be described. As shown in fig. 3, when all the cards P used for the game are described with the side on which the card type is drawn as the "display surface" and the opposite side as the "back surface", a so-called permanent magnet M (referred to as a magnet M) which is a magnetic body in this example is embedded at a position on the opposite side, that is, the lower side, in the case where the direction from the display surface to the back surface in the thickness direction and the direction in which the card type can be directly read is the upper side, that is, at the center in the thickness direction and at a position offset in the longitudinal direction.

In this example, the magnet M of the card P has, for example, an N-pole display surface, and an S-pole facing the outer peripheral side of the (permanent) magnet M used in the later-described suction conveying unit 4 and the display surface side of the card P (N-pole of the magnet M) are attracted to each other. In addition, when the card P is a card whose back surface is the upper surface among the cards P agitated by the shuffling unit 3, the card P is repelled from the magnet M of the suck-up conveying unit 4 in this example.

In the automatic mahjong table 1, 1 player plays a game on each side of four sides in a plan view, and a top board (not shown) for playing the game is disposed on the upper surface of the automatic mahjong table 1. A display unit for displaying, for example, a dealer and the like is provided in the center of the top plate, and a card insertion opening/closing unit for dropping a card that has just been used into the housing 2 is provided around the display unit. In addition, a tile outlet opening/closing portion, which is provided at a position on the top plate that follows the game rules of mahjong, is provided on the outer peripheral portion of the top plate from the center portion toward each side, so that the tile stack aligned in the housing 2 and the hand are lifted and arranged on the top plate.

Inside the casing 2 are provided: a shuffling section 3; a sucking-up and conveying unit 4 driven at a constant speed, the sucking-up and conveying unit 4 including a magnetic body having a polarity to be attracted to the magnet M of the card P therein, and a (permanent) magnet M in this example so that the S-pole faces the outer peripheral surface as described above, so as to suck up the card agitated by the shuffling unit and convey the card; a card vertical detection member provided in the middle of the conveyance path of the suction conveyance unit 4; a vertical reversing unit 7 provided in the middle of the conveyance path downstream of the card vertical detection means, the vertical reversing unit 7 horizontally reversing a downward card of the cards to an upward direction by the card vertical detection means; a card pile forming part 8 which is arranged at a position further downstream than the vertical turning part 7 of the conveying path; and a hand forming portion 9. The card turning mechanism of the present invention is mainly configured by the card P suction/conveyance unit 4, the card up/down detection unit, and the vertical reversing unit 7 in the above configuration.

The shuffling unit 3 receives the medals P dropped from the top plate as described above by the rotating plate in the shape of an umbrella, and moves the medals P to the suction and transport unit 4 provided in the outer periphery of each side in the housing 2 while stirring the medals P by the rotation of the rotating plate.

The suction and transport unit 4 is configured such that suction drums 4A are provided at positions on the outer periphery of the rotating plate of the shuffler 3 corresponding to the approximate center of the length of each side of the housing 2 at equal angular intervals of approximately 90 degrees, and transport drums 4B are disposed across a placement unit 4C so as to be in the same straight line as the suction drums 4A in the direction perpendicular to the drum width (transport surface width) of the suction drums 4A and in the direction toward each edge of the housing 2.

The upper suction drum 4A and the transport drum 4B are held between the substrate 2A facing the shuffle unit 3 and the substrate 2B on the opposite side, and the upper suction transport unit 4 is pivotally supported. The base plate 2B guides the card P sucked up by the upper suction drum 4A so that the posture of the card P can be adjusted in the vertical direction. The substrate 2B is pivotally supported by the transport drum 4B so that a portion having a width (width capable of horizontally turning the substrate 2B toward the shuffle unit 3 side) which is wider than the width of the transport surface on which the upper suction drum 4A is interposed and which can be horizontally turned by a vertical turning unit 7 (described later) during transport of the transport drum 4B is formed at the upper end.

In this example, the substrate 2B has a function of guiding the card P on the conveyance path formed by the upper suction drum 4A and the conveyance drum 4B so as not to be deviated from the conveyance path, and also has, for example, the following functions: when the cards P sucked up from the shuffling unit 3 by the upper suction drum 4A are not properly aligned or sucked up in parallel but are sucked up in a shifted state, the substrate 2B is corrected so that the vertical direction and the transport direction of the cards P coincide with each other.

The suction drum 4A and the transport drum 4B are columnar in shape having a height (thickness) slightly smaller than a dimension in a width direction orthogonal to the vertical direction of the cards P, and in this example, end surfaces of the suction drum 4A and the transport drum 4B as viewed in the axial direction are formed into a dodecagon in which long side portions 4A whose length in the vertical direction of the cards P is 1 side and short side portions 4B whose length is 1 side substantially half of the long side portions are alternately continuous. Further, as described above, the magnets M are embedded in the long side portion 4A of the suction drum 4A and the long side portion 4A of the conveyance drum 4B so that the south pole faces the outer periphery.

The reason why the short side portion 4B of the upper suction drum 4A and the short side portion 4B of the conveyance drum 4B exist is to prevent the following: if the long side portions 4a are provided continuously, the cards P may be dropped or may not be sucked due to mutual interference caused by the thickness of the cards P, and the cards P may not be continuously sucked up and conveyed. By alternately providing the long side portions 4a and the short side portions 4b, the cards P can be efficiently sucked up one by one and conveyed, and the diameter of the substrate 2 does not unnecessarily increase.

The upper suction drum 4A and the transport drum 4B rotate at a constant speed in synchronization with each other, and temporarily place the cards P sucked up from the shuffling unit 3 by the upper suction drum 4A on the placement unit 4C, and the transport drum 4B sucks the cards P from the placement unit 4C and transports the cards P to the upper and lower turning unit 7, the pile forming unit 8, and the hand forming unit 9.

The card up-and-down detecting means is not particularly limited as long as it can grasp whether the card P having the magnet M sucked up from the upper suction drum 4A is in the conveying direction on the upper side or in the conveying direction on the lower side. In this example, the card vertical detection means is constituted by, for example, a magnet detection sensor 5 and a card detection sensor 6, and the magnet detection sensor 5 and the card detection sensor 6 are provided at positions on the substrate 2B side where the cards P sucked up from the shuffling portion 3 by the suction drum 4A are horizontal.

In the card up-down detecting means of this example, the magnet detecting sensor 5 is provided on the upstream side in the rotation direction of the upper suction drum 4A, the card detecting sensor 6 is provided on the downstream side of the magnet detecting sensor 5, the magnet detecting sensor 5 and the card detecting sensor 6 are arranged in parallel at an interval slightly shorter than the length of the card P in the up-down direction, and as shown in fig. 6, it is detected whether or not the card P in the up-down direction, in this example, the upper side of the card P is in the forward direction of the conveying direction.

That is, as shown in fig. 6 (b), the card up-down detecting unit in the present example is configured as follows: the card P is attracted upward (normal posture), and the card detection sensor 6 is turned on slightly later, that is, it is detected that the card P is upward only when both the magnet detection sensor 5 and the card detection sensor 6 are turned on, and otherwise, it is determined that the card P is downward.

To explain in time series, as shown in fig. 6 (a), the magnet detection sensor 5 and the card detection sensor 6 are both off, and thereafter, as shown in fig. 6 (b), the magnet detection sensor 5 and the card detection sensor 6 are both on, and in this case, the card P is detected to be facing upward.

On the other hand, as shown in fig. 6 (c), the magnet detection sensor 5 is turned on and the card detection sensor 6 is turned off, and then as shown in fig. 6 (d), the magnet detection sensor 5 is turned off and the card detection sensor 6 is turned on, and in this case, it is detected that the card P is facing downward.

In the explanation using fig. 6, no signal is generated at the time of turning off and no signal of turning off is input to the control unit (not shown), and therefore, as the control unit, if both the magnet detection sensor 5 and the card detection sensor 6 in fig. 6 (b) are on, it is determined that the card P is facing upward, and if (only) the magnet detection sensor 5 in fig. 6 (c) is on or (only) the card detection sensor 6 is on, it is determined that the card P is facing downward.

If the card up-down detecting means is provided as in this example, for the downward judgment, the downward judgment can be performed after so-called double confirmation that only one of the magnet detecting sensor 5 and the card detecting sensor 6 is turned on is confirmed before the card P passes through the card up-down detecting means, and therefore, erroneous detection disappears, and the speed at which the card P is conveyed by the upper suction conveying unit 4 is easily adjusted because it does not depend on the rotation speed of the upper suction drum 4A.

In this example, the card vertical detection means may be configured to reverse the arrangement of the magnet detection sensor 5 and the card detection sensor 6, that is, to position the card detection sensor 6 on the upstream side of the upper suction drum 4A and to position the magnet detection sensor 5 on the downstream side of the card detection sensor 6, for example. In this case, the vertical determination is performed by using the time from when the passage of the card P is detected until the magnet M is detected.

For example, in the arrangement of the magnets M in the cards P of the present example, if the time from the detection of the card until the detection of the magnet is "out" of the predetermined time, it is determined that the card P is facing upward, and if the time from the detection of the card until the detection of the magnet is "in" of the predetermined time, it is determined that the card P is facing downward. With this arrangement, the vertical orientation of the card P can be determined.

In this example, the vertical reversing unit 7 is provided, for example, at a position closer to the substrate 2B than a position where the cards P sucked up from the placing unit 4C by the transport drum 4B are horizontal. In this example, the vertical reversing section 7 is configured such that, for example, a rod protrudes from the side of the substrate 2B toward the side of the substrate 2A (the side of the conveying path) by approximately 1/3 of the width of the conveying path (the width of the cards P).

If the projecting amount of the vertical turning unit 7 to the conveying path is larger than 1/3 of the width of the card P, the conveyance of the card P may be stopped, and if the projecting amount is smaller than 1/3 of the width of the card P, the card P being conveyed may be changed only in the conveying posture and may not be horizontally turned well.

When the card up-down detecting means detects a card P facing downward and outputs a signal indicating that the card P facing downward is detected from the control unit at a predetermined timing, the up-down reversing unit 7 protrudes on the conveying path.

When the card P, which is currently facing downward, approaches the horizontal position of the transport drum 4B (a position above the outer periphery when the shuffling portion 3 side is the lower side of the outer periphery) as shown in fig. 7 a, the vertical reversing portion 7 protrudes immediately before the card P reaches the vertical reversing portion 7 as shown in fig. 7B, and a position approximately 1/3 of the card P on the side of the substrate 2B in the width direction abuts on the vertical reversing portion 7.

As shown in fig. 7 (c), the card P is conveyed while being attracted to the conveying drum 4B in the original state, but the upper side of the card P rotates about the magnet M attracted to the conveying drum 4B by the card P coming into contact with the vertical turning unit 7.

As shown in fig. 7 (d), when the card P is rotated by about 90 degrees with respect to the conveying direction, the vertical reversing section 7 retreats toward the base plate 2B, and the card P is further rotated by the conveyance of the conveying drum 4B and the impact of the abutment. Thereafter, as shown in fig. 7 (e), the card P is conveyed by the conveyance drum 4B in a state of being turned upside down. Note that, when the card up-down detecting means detects that the card P is facing upward, the up-down turning unit 7 does not operate.

In this way, the vertical reversing section 7 makes the front surface of the conveyed card P in the conveying direction abut on approximately 1/3 of the width direction of the card P by using the moving speed of the card P in the conveying direction and the attraction between the magnets M, and horizontally reverses the card P centering on the magnets M by the impact, so that it is not necessary to provide a large-sized structure in a limited space in the housing 2, and the vertical alignment of the cards P can be accurately performed without stopping the conveyance of the cards P or reducing the conveying speed.

A card pile forming portion 8 is provided at a position further downstream than the position of the transport drum 4B where the vertical reversing portion 7 is provided, so as to be orthogonal to the transport direction of the upper suction transport portion 4. The card stack forming unit 8 includes: a card feeding rod 8a which moves forward and backward from the substrate 2B side relative to the substrate 2A side; and a guide mechanism 8b for aligning and arranging the cards P pushed out in a direction (substrate 2A side) orthogonal to the conveying path by the side surfaces of the cards P being pressed by the card feed lever 8a by the guide mechanism 8b as shown in fig. 8 (a) to 8 (c). The guide mechanism 8b has the following structure: after a predetermined number of cards P are placed, the bottom surface of the guide mechanism 8b is lowered by the thickness of the cards P, another deck of cards P is placed on the queue of the currently placed cards P, and after two decks of cards P are placed, the guide mechanism 8b is raised from the card discharge opening/closing portion of the top plate in accordance with a control signal for starting the next game.

As shown in fig. 8 (a) to 8 (c), the hand forming unit 9 includes: a card-feeding lever 9a which moves forward and backward from the side of the substrate 2B relative to the side of the substrate 2A; and a guide mechanism 9b for aligning and arranging the cards P pushed out in a direction (substrate 2A side) orthogonal to the conveying path by pressing the side surfaces of the cards P with the card feed lever 9 a. The guide mechanism 9b has the following structure: after a predetermined number of cards P are placed, the guide mechanism 9b is lifted from the card-discharge opening/closing portion of the top plate in accordance with a control signal for starting the next game.

In the case of this example, the control is performed such that the card stack forming unit 8 is first driven until the card stack is formed, and after the card stack is formed, the hand forming unit 9 is driven to form the hand, but the driving may be performed in reverse order.

As described above, according to the card turning mechanism of the present invention, the player can quickly start the game by saving time and effort for matching the upper and lower hands at the start of the game. In addition, since the card P is turned horizontally when the card P is turned upside down, the limited space in the housing 2 is not consumed unnecessarily, and since the speed of the constant speed conveyance is not reduced, the time for aligning the cards can be shortened (or the time for aligning the cards can be suppressed from being lengthened).

In the above embodiment, the card pile is also in the vertically aligned state, but when only the hands are aligned vertically, the following operation is required: the detection signal of the card up-down direction or down direction from the card up-down detecting means is a signal for counting only the passage of the card P, and the up-down turning part 7 (and the hand forming part 9) is not operated, and when the card stack is formed, when the number of cards obtained by subtracting 3 cards from the total number of the cards P corresponding to the amount of the formed card stack is counted in this example, the up-down turning part 7 is operated based on the detection signal of the card up-down direction or down direction of the card up-down detecting means, and the operation of the card stack forming part 8 is stopped and the hand forming part 9 is operated.

Claims

1. A card up-and-down turning mechanism for making the up-and-down direction of the cards of an automatic mahjong table consistent, the automatic mahjong table shuffles the cards for playing in a casing at the lower part of a top plate for playing and places the cards into a card stack and a hand, wherein,

the card up-down turning mechanism is provided with:

a sucking-up and conveying unit that sucks up the cards agitated by the shuffling unit and conveys the cards at a constant speed while maintaining the sucked state, the shuffling unit shuffling the cards used in the previous game that are dropped from the upper surface of the housing;

a card up-and-down detection member provided midway along the conveyance path of the suck-up conveyance unit and detecting whether a card being conveyed is facing up or down; and

and an up-down turning unit provided in the middle of the conveyance path downstream of the card up-down detecting unit, the up-down turning unit turning the card facing downward horizontally upward by the card up-down detecting unit.

2. The card over and under turning mechanism of claim 1,

a magnetic body having a polarity is embedded in each card, and a magnetic body having a polarity to be attracted to the magnetic body of the card is incorporated in the upper attraction conveying unit.

3. The card flipping over and under mechanism of claim 1 or 2,

the upper and lower overturning parts have the following structures: the card feeding device is provided with a sucking and conveying part which is used for sucking and conveying cards at a fixed speed, and a part of the front surface of the sucking and conveying part in the conveying direction of the cards is contacted with the sucking and conveying part, wherein the sucking and conveying part protrudes from the direction orthogonal to the conveying path on the conveying path of the sucking and conveying part for performing fixed speed conveying.