KR101722163B1 - A pitching machine for screen baseball and screen baseball system comprising therefore - Google Patents

Abstract

A pitching machine for a screen baseball in which a supplied ball is ejected through a screen hole formed in a screen by a pitching actuator with a predetermined discharge axis (A) to a target point in a screen baseball system, There is provided a pitching machine for a screen baseball including a driving actuator for moving the pitching machine and a screen baseball system including the pitching machine, wherein the discharge axis of the discharged ball is always discharged at the same position, The formed screen holes may not be formed so large that the operation of the pitching machine can not be seen through the screen holes and it is difficult to predict the ball to be discharged so that the sense of presence and fun of the screen baseball game can be improved.
In addition, it is possible to prevent an improper supply of the ball to improve the reliability of the ball to be discharged, and to prevent jamming and accidents and failure of the apparatus.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a pitching machine for screen baseball,

The present invention relates to a pitching machine, and more particularly, to a pitching machine and a screen baseball system including the pitching machine for discharging a ball to a target point in a screen baseball system.

A "screen baseball" means a baseball game similar to a real baseball game, in which a user views a projected image using a screen on which the image is projected and a pitching machine located on the back of the screen.

A screen baseball system will be described with reference to Fig.

The space of the screen baseball system can be divided into a safety zone, a game zone and a pitching zone.

The safe zone is a zone that is separated and protected from the game zone by a safety net installed between the game zone and the game zone.

In the game area, a discharge signal device, a video part, a sensor and a screen are located.

The discharge signal device is configured to apply a baseball ball discharge signal to a pitching machine through a control unit (not shown) or the like, and may be shaped like a pedal. The baseball ball is ejected when the user presses the ejection signal device.

The screen hole is located in the center of the screen. The baseball ball ejected from the pitching machine moves at high speed toward the user of the game area through the screen hole, and the game is played by the user by hitting it (betting).

Such a conventional pitching machine can change the target point by changing the ejection axis of the ejected hole.

The related art is as follows.

U.S. Patent No. 8,932,156 discloses an apparatus for ejecting a ball. However, the discharge axis is rotated in the plane direction about the one axis of the lower side of the pitching machine, and the discharge axis is rotated in the vertical direction through the adjustment member provided on the axis.

Korean Patent No. 1,508,523 discloses an apparatus for discharging a ball, which also rotates a discharge axis about a plurality of axes below a pitching machine in a plane direction and a vertical direction.

This method is also applied to the pitching machine disclosed in Korean Patent No. 948,203.

However, as described above, there is a screen between the pitching machine and the user, and the ball discharged from the pitching machine through the screen hole formed on the screen is discharged through the target point.

2, the conventional pitching machine 1 is applied to a screen baseball system so that the center c of the discharge axis, which is changed when the discharge axis a of the pitching machine is changed, The screen hole 3 must be formed to be very large in order to allow the hole to be discharged along the changing discharge axis a to pass through the screen hole 3 and reach the target point.

Thus, on the user side, the operation of the pitching machine 1 is seen through the largely formed screen hole 3, so that the target point of the ball to be discharged can be anticipated, so that the sense of presence and fun in the game are greatly reduced.

In addition, generally, the above-mentioned pitching machines are provided with a supply part for supplying balls to be discharged, which are sequentially supplied by self-weight or transporting means by aligning a plurality of balls with a pitching machine.

In this case, the plurality of balls to be supplied are maintained in close contact with each other, so that even if any one of the balls is disposed at a position to be supplied to the pitching machine, the ball moves in a state of being in close contact with the ball at the side.

Therefore, when the pitching machine is tilted downwardly while being angled upward and downward as described above before the ball is fed, the ball rolls downward due to gravity, so that the desired pitch can be reliably supplied There was no problem.

That is, the ball which has reached the waiting area for supply is pushed by the subsequent balls and the supply means provided for discharging the ball is disposed at a position other than the predetermined position for pushing the center of the ball, have.

 In addition, a so-called jamming phenomenon occurs in which a plurality of balls are supplied to the pitching machine while the balls are being pushed, resulting in a so-called jamming phenomenon, and the ball may not be ejected even though the user steps on the ejection signal device to apply the hole ejection signal. In this case, the user often thinks that the ball will not be continuously ejected and moves freely within the game area. At this time, the jamming phenomenon is solved, and there is a problem in safety that the ball is suddenly ejected from the pitching machine, .

In other words, the pitching machines described above have limitations in reliability including the abovementioned temporality, accuracy and safety.

In addition, the above-described jamming phenomenon may cause breakage or breakdown of the pitching machine.

U.S. Patent No. 8,932,156 Korean Patent No. 1,508,523 Korea Patent No. 948,203

Accordingly, the present invention has been made to solve the above-mentioned problems occurring in the prior art, and it is an object of the present invention to solve the following problems.

And to provide a pitching machine for a screen baseball in which a discharge axis through which a ball is discharged can be changed to have the same discharge axis around one point of a screen hole.

And to provide a pitching machine for a screen baseball in which a plurality of supplied balls can be supplied to the pitching machine accurately one by one.

Further, it is desirable to provide a screen baseball system including the pitching machine for screen baseball.

In order to solve the above problems, the present invention provides a pitching machine for a screen baseball, in which a supplied ball is discharged through a screen hole formed in a screen by a pitching actuator with a predetermined discharge axis A at a target point, The pitching machine provides a pitching machine for a screen baseball that includes a drive actuator for moving the pitching machine.

It is preferable that the discharge axis A of the discharged hole is pivotally operated by the drive actuator so as to pass through one point in the screen hole 20. [

The pitching machine includes a plane guide member 400 installed in the pitching machine 100 in a shape parallel to the ground in a shape of a arc centering at one point on the side of the screen 10; And a vertical guide member (300) mounted on the pitching machine in a direction perpendicular to the paper surface in a shape of a arc centering at one point on the side of the screen (10).

The pitching actuator pivots along the plane guide member 400 and the vertical guide member 300 so that the discharge axis A of the hole discharged by the pitching actuator passes one point of the screen hole 20. [ Is preferable.

It is preferable that the pitching actuator is at least one wheel 200 that is positioned so as to be rotatable around the supplied ball and that the ball supplied to the pitching actuator is discharged with the discharge axis A by the rotating operation Do.

And a supply part (600) for supplying a hole to be discharged, wherein the supply part (600) comprises: a loading part for moving a plurality of balls inserted into the one side to the other side in a line; A cylinder 620 located at the other side of the loading part and having a cylinder rod 630 capable of moving a ball located on the other side of the loading part to the pitching actuator side by a protruding and retreating operation; A rotating shaft 690 rotating in conjunction with the protruding and retreating operation of the cylinder rod 630; And a first guide member 650 and a second guide member 650 extending from the outer circumferential surface of the rotary shaft 690 at predetermined angles and alternately entering and exiting the rotary shaft 690 in accordance with the rotation of the rotary shaft 690, 660).

And a supply unit (500) for supplying a ball to be discharged, wherein the supply unit (500) comprises: a loading unit for moving a plurality of balls inserted into the one side to the other side in a line; A cylinder 520 having a cylinder rod 530 located on the other side of the loading section and capable of moving a ball positioned on the other side of the loading section to the pitching actuator side by a protruding and retreating motion, And a first guide member 550 and a second guide member 560 which are respectively positioned to be parallel to the cylinder rod 530 and can be alternately put in and out of the other side of the loading part according to the projecting and retracting operation of the cylinder rod 530 .

The one point is preferably the center of the screen hole 20.

Also provided is a screen baseball system comprising the pitching machine, the screen baseball system comprising: a pitching machine; The screen (10); And an ejection signal device for controlling ejection of the blank of the pitching machine.

As described above, the pitching machine according to the present invention is applied to a screen baseball system, so that the discharge holes of the discharged balls are always discharged at the same position, Accordingly, the motion of the pitching machine can not be seen through the screen hole, making it difficult to predict the ball to be ejected, thereby improving the sense of presence and fun of the screen baseball game.

In addition, it is possible to prevent an improper supply of the ball to improve the reliability of the ball to be discharged, and to prevent jamming and accidents and failure of the apparatus.

1 is a schematic view for explaining a screen baseball system according to the prior art;
2 is a schematic view of applying a pitching machine according to the prior art to a screen baseball system.
3 is a schematic diagram of applying a pitching machine according to an embodiment of the present invention to a screen baseball system.
4 to 6 are detailed views of a pitching machine according to an embodiment of the present invention, and are perspective views thereof viewed from different directions.
Figs. 7 and 8 show a detail of a pitching machine according to an embodiment of the present invention, showing a front view and a rear view, respectively.
9-11 are side views illustrating the operation of the pitching machine according to an embodiment of the present invention.
12 to 14 are plan views illustrating the operation of the pitching machine according to an embodiment of the present invention.
15 and 16 are perspective views showing an embodiment of a supply unit which is one constitution of a pitching machine according to an embodiment of the present invention.
17 and 18 are perspective views showing another embodiment of the supply part which is one constitution of the pitching machine according to the embodiment of the present invention.

These and other objects, features and other advantages of the present invention will become more apparent by describing in detail preferred embodiments of the present invention with reference to the accompanying drawings. In this process, the thicknesses of the lines and the sizes of the components shown in the drawings may be exaggerated for clarity and convenience of explanation. In addition, the terms described below are defined in consideration of the functions of the present invention, which may vary depending on the intention or custom of the user, the operator. Therefore, the definitions of these terms should be described based on the contents throughout this specification.

In addition, the described embodiments are provided for illustrative purposes and do not limit the technical scope of the present invention.

The constituent elements of the pitching machine for screen baseball according to the present invention can be used integrally or individually. In addition, some components may be omitted depending on the usage pattern.

Hereinafter, a pitching machine for a screen baseball (hereinafter, simply referred to as a pitching machine) according to an embodiment of the present invention will be described with reference to FIG. 3 attached hereto.

As shown in Fig. 3, the balls discharged by the pitching machine 100 are discharged by a pitching actuator with a predetermined discharge axis A directed to one point (C).

That is, the pitching machine 100 is operable so that the ball ejected by the pitching actuator provided in the pitching machine 100 passes through one point C of the screen hole 20 formed in the screen 10.

The one point C is a point located in the screen hole C, and may be the center of the screen hole 20 preferably.

Thus, the screen hole 20 can be formed at a minimum in a range corresponding to the size of the hole to be ejected, so that the movement of the pitching machine 100 is not visible through the screen hole 20 on the side where the hole is blown, It becomes difficult to predict the trajectory of the ball.

When the user hits, the player feels the same sense of presence as the actual pitcher discharges, and the interest of the game can be induced.

The configuration of the pitching machine 100 will be described in detail with reference to Figs. 4 to 8. Fig.

The pitching machine 100 according to the present invention includes a wheel 200, a planar guide member 400, and a vertical guide member 300.

The wheel 200 is positioned inside the support plate 110 which forms the outer shape of the pitching machine 100 and the support plate 110 is supported on the support base 120 located below the support plate 110.

In this embodiment, the wheel 200 is spaced at a predetermined angle (120 degrees in the present embodiment) around the discharge-air bearing portion 240 where the supplied balls are disposed, Three wheels of the first wheel 210, the second wheel 220 and the third wheel 230 are positioned.

It goes without saying that the number of the wheels 230 and the spacing angle may be changed as needed.

Each of the wheels 210, 220 and 230 disposed around the discharge standby portion 240 is connected to a first motor 211, a second motor 221 and a third motor 231 connected to apply a rotational force thereto .

Each of the wheels 210, 220 and 230 rotates by driving the motors 211, 221 and 231 connected thereto and is supplied to the discharge standby unit 240, 230 and is discharged to the side which is hitting through the screen hole 20 formed on the screen 10 with the predetermined discharge axis A through the discharge port 250 by the rotational force of each wheel 210, do.

The wheel 200 functions as a pitching actuator in the pitching machine 100. Instead of the wheel 200, such a pitching actuator can be provided with a means capable of applying force to the ball, The ball can be ejected by using an actuator using a direct impact type or an actuator using a direct impact type.

However, as in the present embodiment, by varying the rotation speed or the placement angle of each of the plurality of rotating wheels 200, it is possible to change the rotation of the discharged balls and to discharge various kinds of balls, It can bring the interest of the game.

The planar guide member 400 is installed on one side of the wheel 200. Specifically, it may be positioned below the support plate 110 surrounding the outer sides of the wheels 210, 220, and 230.

The planar guide member 400 may be formed in a rail shape, and is disposed at a lower part of the support plate 110 so as to form an arc shape parallel to the ground.

The plane guide member 400 is formed in a shape of arc centered at one point on the side of the screen 10 including the screen hole 20.

A planar shifting member 410 movable along the planar guide member 400 is provided on the planar guide member 400 and the planar shifter 410 is installed below the support plate 110.

A cylinder 140 having a cylinder rod 141 which is capable of protruding and retracting in parallel with the ground is positioned in a lower portion of the support base 120. One side of the cylinder rod 141 is supported by a bracket 142 One side of the cylinder 140 is connected to the lower portion of the plate 110 and the other side of the cylinder 140 is rotatably connected through a shaft member 143 provided under the support, And is rotatably mounted.

Thus, the support plate 110 can be moved along the planar guide member 400 by the projecting and retracting operation of the cylinder rod 141. [

The vertical guide member 300 is in the shape of a rail and is disposed on both sides of the wheel, that is, at an inner surface of the support plate, in an arc shape perpendicular to the ground.

The vertical guide member 300 is formed in an arc shape centering at one point on the side of the screen 10 including the screen hole 20.

A vertical moving member 310 is provided on the vertical guide member 300 and is movable along the vertical guide member 300. Each vertical moving member 310 includes a fixing plate 112 for connecting the vertical moving member 310, The wheel 200 can be operated along the vertical guide member 300 by the vertical moving member 310. [

A cylinder 130 having a cylinder rod 131 capable of protruding and retracting perpendicularly to the ground is positioned on the side of the fixing plate 112. One side of the cylinder rod 141 is fixed to the fixed plate 112 And one side of the cylinder 130 is installed on the lower side of the support plate 110 through the bracket 134 and one side of the cylinder rod 131 and the cylinder 130 are hingably installed.

The pitching machine 100 can be pivoted by the projecting and retracting operation of the cylinder rods 131 and 141 so that even if the discharge axis A is changed as described above, It passes through the point.

It is also possible to change the discharge axis A by changing the discharge axis A of the balls discharged through the respective guide members 300 and 400 and the moving members 310 and 410 A more precise change of the discharge axis A can be realized. Therefore, on the user side striking through the precise change of the discharge axis A, it is possible to determine whether the discharged ball is a hitable ball (for example, strike or ball) It becomes difficult to judge, and accordingly the interest inducing effect according to the sense of presence in the bat is improved.

Next, the operation of the pitching machine according to the embodiment of the present invention will be described with reference to Figs. 9 to 14 attached hereto.

First, the operation of the pitching machine 100 in the vertical direction will be described with reference to Figs. 9 to 11. Fig.

9, in a state in which the discharge axis A passes through one point C of the screen hole 20 of the screen 10 in parallel with the paper surface, The operation of the rod 131 causes the pitching machine 100 to move along the vertical guide member 300 in the direction perpendicular to the paper surface,

However, since the pitching machine 100 operates along the arc-shaped vertical guide member 300 through the vertically movable member 310, as shown in Figs. 10 and 11, the discharge axis A, from which the balls are discharged, The screen 10 does not deviate from one point C of the screen hole 20 formed in the screen 10.

Next, the planar motion of the pitching machine 100 will be described with reference to Figs. 12 to 14. Fig.

As shown in Fig. 12, in a state in which the discharge axis A passes through one point C of the screen hole 20 of the screen 10 in a state of being perpendicular to the screen 10, The pitching machine 100 moves along the planar guide member 400 in a direction parallel to the paper surface in accordance with the operation of the cylinder rod 141 which operates and thus the discharge axis A changes.

However, since the pitching machine 100 operates along the arc-shaped planar guide member 400 through the planar moving member 410, as shown in Figs. 13 and 14, the discharge axis A, from which the balls are discharged, The changed discharge axis A does not deviate from one point C of the screen hole 20 formed in the screen 10. [

Even if the discharge axis A changes due to the simultaneous operation of the cylinder rods 130 and 140 and the combination of the planar and vertical motions, the changed discharge axis A is guided to the screen hole 20 (C).

This makes it unnecessary to form the screen hole 20 formed on the screen 10 more than necessary than the size of the hole to be ejected, (A) can not be predicted, it is possible to improve the sense of presence and fun in batting practice.

In addition, the pitching machine according to an embodiment of the present invention may further include a supply unit for supplying balls to the inside of the pitching machine 100, specifically, each wheel 200 side.

Hereinafter, the construction and operation of the supply unit, which is a constitution of the pitching machine, will be described in detail with reference to Figs. 15 to 18 attached hereto.

First, one embodiment of the supply unit 600 will be described. Figs. 15 and 16 are diagrams showing the configuration and operation of an embodiment of the supply unit 500. Fig.

The supply section 600 includes a loading section, a cylinder 630, a rotating shaft 690, and a guide member.

The loading unit (not shown) is provided with a space in which a plurality of balls inserted into one side are received in a row and supplied to the other side.

The supply of the ball to the other side of the loading part may be performed by the self weight of the ball formed so that the loading part is inclined, but the present invention is not limited to this, and a feeding member for moving the ball in the loading part may be provided have.

The cylinder 620 is provided with a cylinder rod 630 which is located on the other side of the loading part, that is, on the side where the ball inserted into the loading part is discharged from each of the wheels and is supplied.

The cylinder rod 630 pushes the ball moving toward the loading part side through the protruding and retreating operation, and the cylinder rod 630 is supplied to the discharge waiting part 240.

The rotating shaft 690 is arranged so as to be rotatable in conjunction with the projecting and retracting motion of the cylinder rod 630.

The rotating shaft 690 includes a rack 640 located on the outer circumferential surface of the cylinder rod 630, a first gear 641 engaged with the rack 640 and a rotating shaft 690, a second gear 670, And is connected to the cylinder rod 630 through a gear 680.

The first gear 641 converts the vertical motion of the rack 640 located in the cylinder rod 630 into a rotational motion in the form of a pinion gear, and the second gear 670 and the third gear 680 ) Are connected in the form of a bevel gear.

The rotation of the rotary shaft 690 is controlled by a rack 640 located on the outer circumferential surface of the cylinder rod 630, a first gear 641 connecting between the rack 640 and the rotary shaft 690, 670 and the third gear 680, the linear projecting / retracting operation of the cylinder rod 630 is converted into the rotating operation.

The first guide member 650 and the second guide member 660 extend from the outer circumferential surface of the rotating shaft 690 at predetermined angles, respectively, and the predetermined angle is such that the inserted ball can be received in the guide members.

The first guide member 650 and the second guide member 660 can be alternately moved to the other side of the loading unit by the rotation of the rotating shaft 690.

In the state where the cylinder rod 630 is immersed, the first guide member 650 is located on the other side of the loading part and the ball in the loading part can not be supplied to the discharge-air bearing part 240 side The first guide member 650 is disengaged from the other side of the loading part as the rotating shaft 690 rotates and the ball located on the other side of the loading part is released through the end of the cylinder rod 630, (240).

At this time, the second guide member 660 moves to the side of the stacking portion and prevents the next hole of the hole supplied to the discharge-standby base portion 240 from being supplied to the discharge-standby portion 240.

The above process is repeatedly performed by the repetitive protruding and retracting operation of the cylinder rod 630. Accordingly, the plurality of balls inserted into the loading unit are supplied to the discharge-standby unit 240 one by one without being inputted into the discharge- And is discharged.

Next, another embodiment of the supply unit 500 will be described. 17 and 18 are diagrams showing the configuration and operation of another embodiment of the supply unit 500. As shown in Fig.

The loading portion is the same as the configuration of the above embodiment.

Constitution of the cylinder 520 and the cylinder rod 530 Like the cylinder, the cylinder and the cylinder of the embodiment, the cylinder 520 is provided with the ball inserted into the other side of the loading part, that is, the loading part, And a ball moved to the side of the loading part due to the projecting and retracting operation of the cylinder rod 530 is supplied to the discharge waiting base part 240. [

The first guide member 550 and the second guide member 560 are arranged side by side with the cylinder rod 530 and the guide members 550 and 560 are operated in cooperation with the cylinder rod 530 in the projecting / .

Each of the guide members 550 and 560 includes a rack 540 located on the outer circumferential surface of the cylinder rod 530 in the form of a rack gear and first and second guide members 550 and 560 engaged between the rack 540 and the guide members 550 and 560, And is connected to the cylinder rod 530 through the gear 570 and the second gear 580.

The first gear 570 and the second gear 580 are in the form of a pinion gear so that each guide member has a rack 540 located on the outer circumferential surface of the cylinder rod 530, The first gear 570 and the second gear 580 can be alternately moved to the other side of the loading portion according to the operation of the cylinder rod 530. [

In the state where the cylinder rod 530 is in the immersed state, the first guide member 550 is located on the other side of the loading part and the ball in the loading part can not be supplied to the discharge base part 240 side The cylinder rod 530 is protruded so that the first guide member 550 is released from the other side of the loading part and the ball located on the other side of the loading part is supplied to the discharge base part 240 through the end of the cylinder rod 530 .

At this time, the second guide member 560 moves to the inside of the other side of the stacking portion to prevent the next hole of the hole supplied to the discharge-standby portion 240 from being supplied to the discharge-standby portion 240.

The above process is repeatedly performed by the repetitive protruding and retracting operation of the cylinder rod 530. Accordingly, the plurality of balls inserted into the loading unit are supplied to the discharge-standby unit 240 one by one without being inputted into the discharge- And is discharged.

By supplying a plurality of balls to the pitching machine 100 one by one through the supply unit according to each of the above embodiments in order, it is possible to improve the reliability of the ball and the locus of the discharged ball, It is possible to prevent an accident caused by the development, breakage and breakdown of the pitching machine, and the like.

As described above, the pitching machine according to the present invention is applied to a screen baseball system, so that the discharge axis of the discharged balls is always discharged at the same position, so that the screen hole formed on the screen is not formed large, The operation of the pitching machine can not be seen through the screen hole, making it difficult to predict the ball to be ejected, thereby improving the sense of presence and fun of the screen baseball game.

In addition, it is possible to prevent an improper supply of the ball to improve the reliability of the ball to be discharged, and to prevent jamming and accidents and failure of the apparatus.

Although the preferred embodiments of the present invention have been described, the present invention is not limited to the specific embodiments described above. It will be apparent to those skilled in the art that numerous modifications and variations can be made in the present invention without departing from the spirit or scope of the appended claims. And equivalents should also be considered to be within the scope of the present invention.

100: pitching machine
200: Wheel
300: vertical guide member
400: plane guide member
500, 600: Supply unit

Claims (10)

A pitching machine for a screen baseball in which a supplied ball is discharged by a pitching actuator through a screen hole formed in a screen and having a predetermined discharge axis (A) to a target point,
The pitching machine comprising:
And a drive actuator for moving the pitching machine,
The pitching machine pivots about one point in the screen hole 20 by the driving actuator as a central axis so that the discharge axis A of the discharged ball passes through only one point in the screen hole 20,
Pitching machine for screen baseball.
delete The method according to claim 1,
The pitching machine comprising:
A planar guide member (400) mounted on the pitching machine (100) in a direction parallel to the paper surface and having a shape centered at one point on the side of the screen (10); And
And a vertical guide member (300) mounted on the pitching machine in a direction perpendicular to the paper surface, in a shape of an arc centered at a point on the side of the screen (10)
Pitching machine for screen baseball.
The method of claim 3,
The pitching actuator pivots along the plane guide member 400 and the vertical guide member 300 so that the discharge axis A of the hole discharged by the pitching actuator passes one point of the screen hole 20. [ This is possible,
Pitching machine for screen baseball.
The method according to claim 1,
Wherein the pitching actuator comprises:
Wherein at least one wheel (200) is rotatably disposed around the supplied ball, and a ball supplied to the pitching actuator is discharged with the discharge axis (A)
Pitching machine for screen baseball.
The method according to claim 1,
And a supply unit (600) for supplying a ball to be discharged,
The supply unit 600 may be configured,
A loading unit for moving a plurality of balls inserted into one side to the other side in a line;
A cylinder 620 located at the other side of the loading part and having a cylinder rod 630 capable of moving a ball located on the other side of the loading part to the pitching actuator side by a protruding and retreating operation;
A rotating shaft 690 rotating in conjunction with the protruding and retreating operation of the cylinder rod 630; And
A first guide member 650 and a second guide member 660 which extend from the outer circumferential surface of the rotary shaft 690 at predetermined angles and are alternately allowed to enter and exit from the loading unit side in accordance with the rotation of the rotary shaft 690, ), ≪ / RTI >
Pitching machine for screen baseball.

The method according to claim 1,
And a supply part (500) for supplying a ball to be discharged,
The supply unit 500 includes:
A loading unit for moving a plurality of balls inserted into one side to the other side in a line;
A cylinder 520 located at the other side of the loading part and having a cylinder rod 530 capable of moving a ball located on the other side of the loading part to the pitching actuator side by a protruding and retreating operation;
The first guide member 550 and the second guide member 550, which are positioned so as to be parallel to the longitudinal direction of the cylinder rod 530 and can be alternately put in and out of the other side of the loading portion in accordance with the projecting and retracting operation of the cylinder rod 530, 560)
Pitching machine for screen baseball.
The method according to claim 1,
The one point being a center of the screen hole,
Pitching machine for screen baseball.
A pitching machine according to any one of claims 1 to 10,
Screen baseball system.
9. A pitching machine according to any one of claims 1 to 8,
The screen (10); And
And an ejection signal device for controlling ejection of the blank of the pitching machine,
Screen baseball system.

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