High-precision continuous ball launching device

Abstract

The utility model discloses a ball high-precision continuous launching device which comprises an upper bottom plate, a lower bottom plate is correspondingly arranged at the bottom of the upper bottom plate, the side, close to each other, of the upper bottom plate and the side, close to each other, of the lower bottom plate are fixedly connected with an inner culvert type polygonal inner hole aluminum piece, and an upper limiting rail is arranged at the bottom of the upper bottom plate. A lower limiting rail is arranged at the top of the lower bottom plate, preset rod hole positioning plates are fixedly connected to the two sides of the bottom of the lower bottom plate, and preset rods are rotationally connected to the sides, close to each other, of the preset rod hole positioning plates at equal intervals. The utility model relates to the technical field of ball using and conveying, and solves the problems that in the prior art, high precision cannot be achieved in the continuous ball launching process, the phenomena of ball clamping, confusion or accumulation are prone to occurring, ball launching is not smooth enough, the ball launching speed is not stable enough, automatic adjustment cannot be conducted, and the ball launching efficiency is poor. Therefore, the problems of low transmitting precision and poor stability are solved.

Description

Technical Field

[0001] The utility model relates to the technical field of sphere transportation, in particular to a high-precision continuous ball launching device. Background Art

[0002] At present, in the field of using sports balls, professional personnel often need the assistance of additional personnel to pick up and serve balls during practice and training. There are problems such as low serving accuracy, discontinuity, and high costs. Of course, there are also some friction wheel launchers for spheres with a fixed diameter. In the prior art, during the continuous launching process of balls, high precision cannot be achieved, and problems such as ball jamming, chaos, or accumulation are likely to occur, resulting in non-smooth ball launching, unstable ball shooting speed, inability to automatically adjust, and problems of low launching accuracy and poor stability. Summary of the Invention

[0003] Aiming at the deficiencies of the prior art, the utility model provides a high-precision continuous ball launching device, which solves the problems in the prior art that during the continuous launching process of balls, high precision cannot be achieved, and problems such as ball jamming, chaos, or accumulation are likely to occur, resulting in non-smooth ball launching, unstable ball shooting speed, inability to automatically adjust, and problems of low launching accuracy and poor stability.

[0004] To achieve the above object, the utility model is realized through the following technical solutions: A high-precision continuous ball launching device, including an upper base plate, a lower base plate is correspondingly arranged at the bottom of the upper base plate, an inner-connotation polygonal inner-hole aluminum part is fixedly connected to one side of the upper base plate and the lower base plate close to each other, an upper limit track is arranged at the bottom of the upper base plate, a lower limit track is arranged at the top of the lower base plate, pre-set rod hole positioning plates are fixedly connected to both sides of the bottom of the lower base plate, pre-set rods are rotatably connected at equal intervals to one side of the pre-set rod hole positioning plates close to each other, rubber-coated bearings are rotatably connected to one side of the tops of the pre-set rods close to each other, a tension spring is arranged at one end of the pre-set rod away from the rubber-coated bearing, and both ends of the tension spring are fixedly connected to the pre-set rod and the pre-set rod hole positioning plate respectively. Servo motors are arranged at equal intervals on both sides inside the upper base plate and the lower base plate, the output end of the servo motor is in transmission connection with a friction wheel, a guiding aluminum round tube is arranged on one side of the friction wheel away from the inner-connotation polygonal inner-hole aluminum part, the guiding aluminum round tube is fixedly connected to the upper base plate and the lower base plate respectively through guiding aluminum round tube limit blocks, and a photoelectric door is arranged on one side of the guiding aluminum round tube away from the friction wheel.

[0005] Preferably, through-hole aluminum support columns are arranged at equal intervals on one side of the upper base plate and the lower base plate close to each other, the upper limit track is fixedly connected to the upper base plate through the through-hole aluminum support columns and socket head cap screws, and the lower limit track is fixedly connected to the lower base plate through the through-hole aluminum support columns and socket head cap screws.

[0006] Preferably, through-hole aluminum support columns are equidistantly arranged on one side of the pre-set rod hole positioning plates close to each other. A flange bearing is fixedly connected to the inner wall of the pre-set rod, and the inner wall of the flange bearing is fixedly connected to the through-hole aluminum support columns.

[0007] Preferably, thickening anti-deformation plates are arranged above and below the upper bottom plate above the servo motor. Gaskets are equidistantly arranged on the top of the thickening anti-deformation plate located above. The set screw penetrates through the gasket, the thickening anti-deformation plate and the upper bottom plate, and is fixedly connected to the servo motor.

[0008] Preferably, long rod bolts penetrate through the interiors of the through-hole aluminum support columns outside the friction wheels, and the inner walls of the through-hole aluminum support columns inside the pre-set rod hole positioning plates penetrate through long rod bolts.

[0009] The utility model provides a high-precision continuous ball launching device, which has the following beneficial effects: through the cooperation among the upper bottom plate, the lower bottom plate, the inner connotation polygon inner hole aluminum part, the upper limit track, the lower limit track, the pre-set rod hole positioning plate, the pre-set rod, the tension spring, the rubber-coated bearing, the friction wheel, the servo motor, the photoelectric door, the guiding aluminum round tube and the guiding aluminum round tube limiting block, the upper limit track and the lower limit track form a limiting track for ball conveying in the launching device. By controlling the lifting of the rubber-coated bearing, it is ensured that the balls can be conveyed orderly, continuously and stably in the device, and the balls can be prevented from being chaotic, stuck or piled up. At the same time, through the acceleration of the two groups of friction wheels on the balls, the balls are emitted from the guiding aluminum round tube at a fixed angle, which can improve the precision of ball launching. The actual shooting speed of the balls is detected in real time through the photoelectric door, and a sensing signal of the ball shooting speed is fed back to the PID controller, so that the PID controller can calculate the error from the target speed and adjust and control the output rotation speed of the two groups of servo motors to automatically regulate the shooting speed of the balls. Due to its intelligent program design, the operator only needs to simply set the target speed and the number of launches, and can automatically complete the ball launching task at a precise and stable speed, which helps to improve the precision and stability of continuous ball launching.

[0010] Through the cooperation among the pre-set rod hole positioning plate, the pre-set rod, the through-hole aluminum support columns and the flange bearing, the pre-set rod is stably installed and fixed in the pre-set rod hole positioning plate, the pre-set rod can rotate flexibly on the through-hole aluminum support columns, and the rotation angle of the pre-set rod is limited to ensure that the lifting range of the rubber-coated bearing is accurately controllable. At the same time, the introduction of the flange bearing not only enhances the structural stability, but also can reduce the friction resistance during the rotation of the pre-set rod, which can improve the service life and operation efficiency of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 is a schematic external view of the utility model;

[0012] Figure 2 This is a schematic structural view of the present utility model;

[0013] Figure 3 This is a side view of the structure of the present utility model;

[0014] Figure 4 This is an external view schematic diagram of the upper limit track in the present utility model;

[0015] Figure 5 This is an external view schematic diagram of the lower limit track in the present utility model;

[0016] Figure 6 This is an external view schematic diagram of the polygonal inner hole aluminum part of the connotation type in the present utility model;

[0017] Figure 7 This is a schematic diagram of the working principle of the present utility model.

[0018] In the figure: 1. upper bottom plate, 2. lower bottom plate, 3. polygonal inner hole aluminum part of the connotation type, 4. upper limit track, 5. lower limit track, 6. preset rod hole positioning plate, 7. preset rod, 8. tension spring, 9. rubber-coated bearing, 10. through-hole aluminum support column, 11. flange bearing, 12. long bolt, 13. friction wheel, 14. servo motor, 15. set screw, 16. thickened anti-deformation plate, 17. photoelectric door, 18. guiding aluminum round tube, 19. guiding aluminum round tube limit block, 20. gasket. Specific implementation manners

[0019] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without making creative efforts shall fall within the protection scope of the present utility model.

[0020] In the prior art, during the continuous emission of balls, high precision cannot be achieved, and phenomena such as ball jamming, chaos or accumulation are likely to occur, resulting in unsmooth ball emission, unstable ball shooting speed, inability to automatically adjust, and poor emission precision and stability.

[0021] In view of this, the present utility model provides a high-precision continuous ball launching device. Through the cooperation among the upper bottom plate, the lower bottom plate, the inner hole aluminum part with a connotation-like polygon, the upper limit track, the lower limit track, the preset rod hole positioning plate, the preset rod, the tension spring, the rubber-coated bearing, the friction wheel, the servo motor, the photoelectric door, the guiding aluminum round tube and the guiding aluminum round tube limit block, the upper limit track and the lower limit track form a limit track for ball conveying in the launching device. By controlling the lifting of the rubber-coated bearing, it is ensured that the balls can be conveyed orderly, continuously and stably in the device, avoiding chaos or accumulation of the balls. At the same time, through the acceleration of the balls by two groups of friction wheels, the balls are emitted from the guiding aluminum round tube at a fixed angle, improving the precision of ball launching. The photoelectric door detects the actual shooting speed of the balls in real time and feeds back the sensing signal of the ball shooting speed to the PID controller. The PID controller calculates the error from the target speed and adjusts and controls the output rotation speed of the two groups of servo motors, automatically adjusting and controlling the shooting speed of the balls and improving the precision and stability of continuous ball launching.

[0022] Those skilled in the art should connect all the electrical components in this case to their adapted power supplies through wires, and should select appropriate controllers and encoders according to the actual situation to meet the control requirements. For the specific connection and control sequence, reference should be made to the sequence of the electrical components working successively in the following working principle to complete the electrical connection. The detailed connection means are well-known techniques in the art. The following mainly introduces the working principle and process, and no further description of electrical control will be given.

[0023] From Figure 1-7It can be seen that a high-precision continuous ball launching device includes an upper bottom plate 1. A lower bottom plate 2 is correspondingly arranged at the bottom of the upper bottom plate 1. An inner connotation polygonal inner hole aluminum part 3 is fixedly connected to the side of the upper bottom plate 1 and the lower bottom plate 2 close to each other. An upper limit track 4 is arranged at the bottom of the upper bottom plate 1, and a lower limit track 5 is arranged at the top of the lower bottom plate 2. At both sides of the bottom of the lower bottom plate 2, preset rod hole positioning plates 6 are fixedly connected. Preset rods 7 are rotatably connected at equal intervals on the side of the preset rod hole positioning plates 6 close to each other. At the side of the tops of the preset rods 7 close to each other, a rubber-coated bearing 9 is rotatably connected. The outside of the rubber-coated bearing 9 is coated with an elastic rubber material, which can reduce the impact force when the ball is conveyed. At the end of the preset rod 7 away from the rubber-coated bearing 9, a tension spring 8 is arranged. The tension spring 8 gives the end of the preset rod 7 a pulling force away from the lower bottom plate 2. The two ends of the tension spring 8 are respectively fixedly connected to the preset rod 7 and the preset rod hole positioning plate 6. Servo motors 14 are arranged at equal intervals on both sides inside the upper bottom plate 1 and the lower bottom plate 2. The output end of the servo motor 14 is drivingly connected with a friction wheel 13. A guiding aluminum round tube 18 is arranged on the side of the friction wheel 13 away from the inner connotation polygonal inner hole aluminum part 3. The guiding aluminum round tube 18 is used to guide the ball leaving the friction wheel 13, so that the ball is launched at a fixed angle, improving the accuracy of ball launching. The guiding aluminum round tube 18 is fixedly connected to the upper bottom plate 1 and the lower bottom plate 2 respectively through guiding aluminum round tube limit blocks 19. A photoelectric gate 17 is arranged on the side of the guiding aluminum round tube 18 away from the friction wheel 13. The photoelectric gate 17 is used to detect the actual shooting speed of the ball in real time;

[0024] In the specific implementation process, it is particularly worth noting that the upper bottom plate 1 and the lower bottom plate 2 are the upper and lower bottom plates of the ball launching device. Through the cooperation between the upper bottom plate 1, the lower bottom plate 2 and the inner polygon inner hole aluminum part 3, the inner polygon inner hole aluminum part 3 is the ball conveying inlet and is connected to the ball storage device. Through the cooperation between the upper bottom plate 1, the lower bottom plate 2, the upper limit track 4 and the lower limit track 5, the upper limit track 4 and the lower limit track 5 form a limit track for ball conveying inside the ball launching device, ensuring that the balls can be conveyed orderly, continuously and stably inside the device, and avoiding chaos or accumulation of the balls inside the ball launching device. The tension spring 8 gives a pulling force to the end of the preset rod 7 away from the lower bottom plate 2. The outside of the rubber-coated bearing 9 is coated with an elastic rubber material, which can slow down the impact force during ball conveying. Through the cooperation between the upper bottom plate 1, the lower bottom plate 2, the upper limit track 4, the lower limit track 5, the preset rod hole positioning plate 6, the preset rod 7, the rubber-coated bearing 9 and the tension spring 8, when the ball moves to the end of the limit track, the rubber-coated bearing 9 limits the ball and stops the ball from continuing to be conveyed. When the ball needs to be launched, the preset rod 7 rotates under the drive of the driving device, causing the rubber-coated bearing 9 to move downward and stretching the tension spring 8. After the rubber-coated bearing 9 moves to a certain position, the restricted ball continues to be conveyed through the top of the rubber-coated bearing 9. After the ball passes through the rubber-coated bearing 9, the driving device of the preset rod 7 stops driving the preset rod 7. The preset rod 7 and the rubber-coated bearing 9 are reset under the action of the tension spring 8, so that the rubber-coated bearing 9 re-limits the balls conveyed subsequently. Through the cooperation between the upper bottom plate 1, the lower bottom plate 2, the friction wheel 13 and the servo motor 14, there are two groups of friction wheels 13 arranged front and back between the upper bottom plate 1 and the lower bottom plate 2, and the left and right spacing of the two groups of friction wheels 13 is 37.2 mm, with a front-to-back spacing of 2 mm, and respectively driven by servo motors 14. After the upper limit track 4 ends the restriction, the ball is conveyed between the first set of friction wheels 13. After obtaining acceleration from the first set of friction wheels 13, it enters between the second set of friction wheels 13. At this time, the lower limit track 5 ends the restriction. After the ball is accelerated by the second set of friction wheels 13, it is launched from the ball outlet. The guiding aluminum round tube 18 is used to guide the ball leaving the friction wheels 13, so that the ball is launched at a fixed angle, improving the accuracy of ball launching. It is installed and fixed to the upper base plate 1 and the lower base plate 2 through the guiding aluminum round tube position-limiting block 19. The photoelectric gate 17 is used to detect the actual shooting speed of the ball in real time. The photoelectric gate 17 is installed at the outlet of the guiding aluminum round tube 18. Through the cooperation among the upper base plate 1, the lower base plate 2, the inner-connotation polygon inner-hole aluminum part 3, the upper limit track 4, the lower limit track 5, the preset rod hole positioning plate 6, the preset rod 7, the tension spring 8, the rubber-coated bearing 9, the friction wheels 13, the servo motors 14, the photoelectric gate 17, the guiding aluminum round tube 18 and the guiding aluminum round tube position-limiting block 19, the upper limit track 4 and the lower limit track 5 form a position-limiting track for ball conveyance in the launching device. By controlling the lifting of the rubber-coated bearing 9, it is ensured that the balls can be conveyed orderly, continuously and stably in the device, avoiding ball chaos or accumulation. At the same time, through the acceleration of the two sets of friction wheels 13 on the balls, the balls are launched from the guiding aluminum round tube 18 at a fixed angle, improving the accuracy of ball launching. The photoelectric gate 17 detects the actual shooting speed of the ball in real time and feeds back the sensing signal of the ball shooting speed to the PID controller. The PID controller calculates the error from the target speed and adjusts and controls the output rotation speed of the two sets of servo motors 14, automatically adjusting and controlling the shooting speed of the ball and improving the accuracy and stability of continuous ball launching. The specific models of the servo motors 14 and the photoelectric gate 17 are not limited, as long as they meet the usage requirements;.

[0025] Further, through-hole aluminum support columns 10 are equidistantly arranged on one side of the upper base plate 1 and the lower base plate 2 close to each other. The upper limit track 4 is fixedly connected to the upper base plate 1 through the through-hole aluminum support columns 10 and the set screws 15. The lower limit track 5 is fixedly connected to the lower base plate 2 through the through-hole aluminum support columns 10 and the set screws 15. Through-hole aluminum support columns 10 are equidistantly arranged on one side of the preset rod hole positioning plate 6 close to each other. A flange bearing 11 is fixedly connected to the inner wall of the preset rod 7, and the inner wall of the flange bearing 11 is fixedly connected to the through-hole aluminum support columns 10;

[0026] In the specific implementation process, it is particularly worth noting that through the cooperation among the upper base plate 1, the upper limit track 4, the through-hole aluminum support column 10 and the dowel bolt 15, the connection and fixation of the upper limit track 4 and the upper base plate 1 are realized. Through the cooperation among the lower base plate 2, the lower limit track 5, the through-hole aluminum support column 10 and the dowel bolt 15, the connection and fixation of the lower limit track 5 and the lower base plate 2 are realized. Through the cooperation among the upper base plate 1, the lower base plate 2, the upper limit track 4, the lower limit track 5, the through-hole aluminum support column 10 and the dowel bolt 15, the upper limit track 4 and the lower limit track 5 are stably installed and fixed between the upper base plate 1 and the lower base plate 2, and the upper limit track 4 and the lower limit track 5 form a complete limit track for the movement of the ball transportation. The upper limit track 4 and the lower limit track 5 are composed of a total of eight side lines slightly larger than the ball tolerance. The spatial distribution is that the eight side lines closest to the projectile are on a circle slightly larger than the upper limit deviation of the ball, ensuring the stable transportation of the ball in the device;

[0027] Further, through-hole aluminum support columns 10 are equidistantly arranged on the side of the preset rod hole positioning plate 6 close to each other. A flange bearing 11 is fixedly connected to the inner wall of the preset rod 7, and the inner wall of the flange bearing 11 is fixedly connected to the through-hole aluminum support column 10;

[0028] In the specific implementation process, it is particularly worth noting that through the cooperation between the preset rod hole positioning plate 6 and the through-hole aluminum support column 10, the preset rod 7 is installed and connected inside the preset rod hole positioning plate 6 and is limited by the through-hole aluminum support column 10 at the bottom. The through-hole aluminum support column 10 at the bottom of the preset rod hole positioning plate 6 is fixed to the tension spring 8, and at the same time, the stability of the preset rod hole positioning plate 6 can be improved. Through the cooperation among the preset rod 7, the through-hole aluminum support column 10 and the flange bearing 11, by installing the flange bearing 11 between the preset rod 7 and the through-hole aluminum support column 10, the preset rod 7 can rotate flexibly on the through-hole aluminum support column 10, ensuring the stability of the connection, reducing the wear of the preset rod 7 and the through-hole aluminum support column 10, and improving the service life and stability of the equipment. Through the cooperation among the preset rod hole positioning plate 6, the preset rod 7, the through-hole aluminum support column 10 and the flange bearing 11, the preset rod 7 is stably installed and fixed in the preset rod hole positioning plate 6, the preset rod 7 can rotate flexibly on the through-hole aluminum support column 10, and the rotation angle of the preset rod 7 is limited to ensure that its working range is precisely controllable. At the same time, the introduction of the flange bearing 11 not only enhances the stability of the structure but also reduces the frictional resistance during the rotation of the preset rod 7, improving the service life and operation efficiency of the entire device;

[0029] Furthermore, thickened anti-deformation plates 16 are provided above and below the upper bottom plate 1 and above the servo motor 14. Gaskets 20 are equidistantly arranged at the top of the upper thickened anti-deformation plate 16. The set screws 15 penetrate through the gaskets 20, the thickened anti-deformation plates 16 and the upper bottom plate 1 and are fixedly connected to the servo motor 14;

[0030] In the specific implementation process, it is particularly worth pointing out that through the cooperation among the upper bottom plate 1, the servo motor 14, the set screws 15, the thickened anti-deformation plates 16 and the gaskets 20, the connection between the upper bottom plate 1 and the servo motor 14 is strengthened by the thickened anti-deformation plates 16, enhancing the structural strength of the connection, effectively reducing the deformation phenomenon caused by external forces or long-term use, avoiding the angular deviation of the servo motor 14 due to the deformation of the upper bottom plate 1, and further improving the accuracy of ball launching;

[0031] Furthermore, long bolts 12 penetrate through the inside of the through-hole aluminum support columns 10 outside the friction wheels 13, and the inner walls of the through-hole aluminum support columns 10 inside the preset rod hole positioning plate 6 are penetrated by the long bolts 12;

[0032] In the specific implementation process, it is particularly worth pointing out that through the cooperation among the upper bottom plate 1, the lower bottom plate 2, the through-hole aluminum support columns 10 and the long bolts 12, the installation and fixation of the ball launching device with other installation carriers are realized through the long bolts 12 extending out of the through-hole aluminum support columns 10, enabling the ball launching device to obtain stable support and fixation. Through the cooperation among the preset rod hole positioning plate 6, the control preset rod 7, the through-hole aluminum support columns 10 and the long bolts 12, the long bolts 12 extending out of the through-hole aluminum support columns 10 are connected to the drive assembly to control the rotation of the preset rod 7;

[0033] Working principle: The ball is continuously conveyed from the inner hole of the inner connotation polygonal aluminum part 3 to the inside of the launching device through the ball feeding device, enters between the limiting tracks composed of the upper limiting track 4 and the lower limiting track 5, and then reaches the rubber-coated bearing 9 where it is limited by the rubber-coated bearing 9. When launching, the preset rod 7 rotates under the drive of the driving device, causing the rubber-coated bearing 9 to move downward and stretch the tension spring 8. After the rubber-coated bearing 9 moves to a certain position, the limitation on the ball is released. The ball continues to be conveyed through the top of the rubber-coated bearing 9. After the ball passes through the rubber-coated bearing 9, the driving device of the preset rod 7 stops driving the preset rod 7. The preset rod 7 and the rubber-coated bearing 9 are reset under the action of the tension spring 8, so that the rubber-coated bearing 9 re-limits the balls conveyed subsequently. The ball whose limitation is released continues to move forward and is conveyed between the first group of friction wheels 13. After being accelerated by the first group of friction wheels 13, it enters between the second group of friction wheels 13. At this time, the lower limiting track 5 ends its restriction. After the ball is accelerated by the second group of friction wheels 13, it is launched from the ball launching port. The guiding aluminum round tube 18 is used to guide the ball leaving the friction wheels 13. The photoelectric gate 17 detects the actual shooting speed of the ball in real time and feeds back the sensing signal of the ball shooting speed to the PID controller. The PID controller calculates the error from the target speed and adjusts and controls the output rotation speeds of the two groups of servo motors 14 to automatically adjust and control the shooting speed of the ball. This device can improve the shooting accuracy and stability of the ball, has controllability, is simple and compact in structure, and can be used in ball launchers, launching fire extinguishing bombs, and the field of ball conveying.

[0034] It should be noted that in this article, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the term "comprising", "including" or any other variant thereof is intended to cover non-exclusive inclusion, so that a process, method, article or device comprising a series of elements not only includes those elements, but also includes other elements not expressly listed, or also includes elements inherent to such process, method, article or device. Without further limitation. An element defined by the statement "comprising a..." does not exclude the existence of additional identical elements in the process, method, article or device comprising the element.

[0035] In the present utility model, unless otherwise clearly defined and limited, terms such as "installation", "setting", "connection", "fixation", "swivel connection", etc. shall be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or integrated; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two components or the interaction relationship between two components. Unless otherwise clearly defined, for those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0036] Although the embodiments of the present utility model have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of the present utility model. The scope of the present utility model is defined by the appended claims and their equivalents.

Claims

1. A high-precision continuous ball launching device, comprising an upper bottom plate (1), characterized in that: A lower bottom plate (2) is correspondingly arranged at the bottom of the upper bottom plate (1). On one side where the upper bottom plate (1) and the lower bottom plate (2) are close to each other, a polygon inner hole aluminum part of the connotation type (3) is fixedly connected. An upper limit track (4) is arranged at the bottom of the upper bottom plate (1), and a lower limit track (5) is arranged at the top of the lower bottom plate (2). On both sides of the bottom of the lower bottom plate (2), preset rod hole positioning plates (6) are fixedly connected. On one side where the preset rod hole positioning plates (6) are close to each other, preset rods (7) are rotatably connected at equal intervals. On one side where the tops of the preset rods (7) are close to each other, rubber-coated bearings (9) are rotatably connected. At one end of the preset rod (7) far from the rubber-coated bearing (9), a tension spring (8) is arranged. The two ends of the tension spring (8) are respectively fixedly connected with the preset rod (7) and the preset rod hole positioning plate (6). On both sides of the inside of the upper bottom plate (1) and the lower bottom plate (2), servo motors (14) are arranged at equal intervals. The output end of the servo motor (14) is drivingly connected with a friction wheel (13). On one side of the friction wheel (13) far from the polygon inner hole aluminum part of the connotation type (3), a guiding aluminum round tube (18) is arranged. The guiding aluminum round tube (18) is fixedly connected with the upper bottom plate (1) and the lower bottom plate (2) respectively through guiding aluminum round tube limit blocks (19). On one side of the guiding aluminum round tube (18) far from the friction wheel (13), a photoelectric door (17) is arranged.

2. The high-precision continuous ball launching device according to claim 1, wherein: On one side where the upper bottom plate (1) and the lower bottom plate (2) are close to each other, through-hole aluminum support columns (10) are arranged at equal intervals. The upper limit track (4) is fixedly connected with the upper bottom plate (1) through the through-hole aluminum support columns (10) and dowel bolts (15). The lower limit track (5) is fixedly connected with the lower bottom plate (2) through the through-hole aluminum support columns (10) and dowel bolts (15).

3. The high-precision continuous ball launching device according to claim 1, characterized in that: On one side where the preset rod hole positioning plates (6) are close to each other, through-hole aluminum support columns (10) are arranged at equal intervals. A flange bearing (11) is fixedly connected to the inner wall of the preset rod (7). The inner wall of the flange bearing (11) is fixedly connected with the through-hole aluminum support column (10).

4. A high-precision continuous ball launching device according to claim 2, characterized in that: Thickened anti-deformation plates (16) are arranged above and below the servo motor (14) on the upper bottom plate (1). On the top of the thickened anti-deformation plate (16) located above, gaskets (20) are arranged at equal intervals. The dowel bolt (15) penetrates through the gasket (20), the thickened anti-deformation plate (16) and the upper bottom plate (1), and is fixedly connected with the servo motor (14).

5. A high-precision continuous ball launching device according to claim 3, characterized in that: Long rod bolts (12) penetrate through the inside of the through-hole aluminum support columns (10) outside the friction wheel (13). The long rod bolts (12) penetrate through the inner walls of the through-hole aluminum support columns (10) inside the preset rod hole positioning plates (6).

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