Table tennis ball serving machine

Abstract

This utility model discloses a table tennis serving machine, relating to the field of serving machine technology. It includes a base and a ball storage chamber, the ball storage chamber being located at the top of the base. It also includes: a serving tube installed on the side wall of the ball storage chamber for storing table tennis balls to be launched; a ball delivery mechanism installed inside the ball storage chamber for transporting table tennis balls to the serving tube; a serving mechanism installed at the front end of the serving tube for launching table tennis balls; and a guide assembly located at the bottom inside the ball storage chamber for guiding the table tennis balls into the serving tube. It has the advantages of meeting the diverse and personalized serving needs of trainees and reducing maintenance and repair costs.

Description

Technical Field

[0001] This utility model belongs to the field of ball serving machine technology, and more specifically it relates to a table tennis ball serving machine. Background Technology

[0002] Table tennis enjoys a broad following in China. For beginners, the time spent picking up the ball often exceeds the actual practice time, slowing down technical progress and potentially diminishing their interest in the sport. For more advanced players, the speed and frequency of manual serves are limited, and the need for a sparring partner to serve for extended periods also hinders the development of consistent movements and power. This makes it difficult to simulate stable, diverse, and predictable serving scenarios, hindering targeted and repetitive practice and improvement of specific serve types.

[0003] While existing table tennis ball serving machines have seen some development, they still have several shortcomings. Some machines have a fixed serving direction, making it difficult to meet trainees' needs for practicing serving at different angles; some machines lack precise or limited serving speed adjustment, failing to meet the training requirements of trainees at different skill levels; and some machines are unreliable in serving stability, prone to serving errors and uneven serving power, affecting the continuity and effectiveness of training. Furthermore, some machines have complex structures and numerous parts, leading to greater difficulty and cost in maintenance and repair. Therefore, there is an urgent need for a table tennis ball serving machine that can reduce the difficulty and cost of maintenance and repair while maintaining performance. Utility Model Content

[0004] In view of the shortcomings of the existing technology, the purpose of this utility model is to provide a table tennis ball serving machine, which has the advantages of being able to meet the diverse and personalized serving needs of trainees and reducing maintenance and repair costs.

[0005] To achieve the above objectives, the present invention provides the following technical solution:

[0006] A table tennis ball serving machine includes a base and a ball storage compartment, wherein the ball storage compartment is located on top of the base;

[0007] It also includes: a ball-serving tube, installed on the side wall of the ball storage chamber, used to store ping-pong balls to be launched;

[0008] A ball delivery mechanism, installed inside the ball storage chamber, is used to deliver the ping-pong ball to the serving tube;

[0009] The serving mechanism, installed at the front end of the serving tube, is used to launch the ping-pong ball;

[0010] The guide assembly, located at the bottom of the ball storage chamber, is used to guide the ping-pong ball into the serving tube.

[0011] The advantages of this design are at least as follows: the ball storage compartment is located at the top of the base, which facilitates the storage of a large number of ping-pong balls, reducing the frequency of replenishment. It also makes the entire ping-pong ball serving machine more compact, reducing its footprint. Through the cooperation of the ball feeding mechanism and the guiding components, the movement of the ping-pong balls within the storage compartment is altered, accurately guiding them into the serving tube. This ensures a stable trajectory for the ping-pong balls, reducing ball jamming or deviation. Ultimately, the stable serving mechanism improves serving stability and reduces serving errors and uneven force. Furthermore, the simple structural design of the ping-pong ball serving machine, with fewer parts, significantly reduces manufacturing costs while maintaining performance, and also simplifies maintenance and repair, making the machine more accessible to the general public.

[0012] The present invention is further configured such that: the ball-launching tube has a segmented structure and is composed of a first pipe and a second pipe spliced ​​together; the first pipe is fixedly installed on the side wall of the ball storage chamber, and the second pipe is rotatably installed on the first pipe.

[0013] The advantages of this scheme are at least as follows: designing the service tube in segments makes it easier to install and disassemble each part. When a part is damaged or needs to be replaced, that part can be replaced separately without replacing the entire service tube. The second tube is rotatably mounted on the first tube, making it more convenient and flexible to adjust the direction of the service tube. This allows trainees to manually adjust the pitch angle of the service tube according to their own needs, thereby adjusting the angle of the serve and improving the targeting and diversity of training.

[0014] Meanwhile, the segmented design allows the length of the serving tube to be adjusted according to the trajectory requirements of the ping-pong ball. By adjusting the splicing position of the first and second tubes, the serving tube can be shortened or lengthened to adapt to different serving distances.

[0015] The present invention is further configured such that: the ball feeding mechanism includes: a ball feeding motor and ball feeding blades; the ball feeding motor is fixedly installed at the bottom of the ball storage chamber, and the output end of the ball feeding motor extends into the interior of the ball storage chamber;

[0016] The ball-feeding blade is fixedly installed at the output end of the ball-feeding motor.

[0017] The advantages of this scheme are at least as follows: by using the ball-feeding motor as the power source, when the ball speed needs to be adjusted, only the rotation speed of the ball-feeding motor needs to be adjusted, thereby precisely controlling the rotation speed of the ball-feeding blades, and thus achieving precise adjustment of the ball-feeding speed and frequency to meet the needs of different training intensities and rhythms. At the same time, the ball-feeding motor is fixedly installed at the bottom of the ball storage compartment, making reasonable use of the space at the bottom of the ball machine, and making the entire ball-feeding mechanism and the overall structure of the ball machine compact.

[0018] The present invention is further configured such that: the ball-feeding blade includes a first blade and a second blade; the first blade and the second blade are detachably connected by several support rods; both the first blade and the second blade are provided with several arc-shaped grooves, the diameter of the arc-shaped grooves is larger than the diameter of the ping-pong ball, and can only accommodate one ping-pong ball; the distance between the first blade and the second blade is smaller than the diameter of the ping-pong ball.

[0019] The advantages of this scheme are at least as follows: the first and second blades are detachably connected by several support rods, facilitating replacement and maintenance. Simultaneously, the use of arc-shaped grooves, with each groove having a diameter larger than that of a ping-pong ball, ensures that only one ping-pong ball enters the groove at a time, preventing ball accumulation and blockage from the outset, thus avoiding the problems of multiple balls mixing or getting stuck. This avoids the ball-jamming problem caused by multiple balls entering the serving channel simultaneously in existing technologies. Furthermore, the blade spacing is smaller than the diameter of a ping-pong ball, effectively preventing the ping-pong ball from being accidentally squeezed out between the blades or getting stuck between the blades and components such as the motor shaft, reducing the risk of ball jamming and blockage, lowering the probability of malfunctions, and improving the reliability of ball delivery.

[0020] The present invention is further configured such that the ball-serving mechanism includes a drive motor, a friction wheel, and a mounting bracket;

[0021] The drive motor and friction wheel are configured in at least two sets. The two sets of drive motors are arranged opposite each other and fixedly mounted on the mounting frame. The friction wheel is fixedly mounted on the output end of the drive motor and arranged parallel to the mounting frame. A ball-launching channel for launching ping-pong balls is formed between the two friction wheels. The mounting frame is composed of two mounting plates of the same size and shape and several connecting shafts fixed together by bolts.

[0022] The advantages of this scheme are at least as follows: there are at least two sets of drive motors and friction wheels. The two sets of drive motors are set opposite to each other and fixedly mounted on the mounting bracket, providing a strong and stable power source for launching the ping-pong ball. The two sets of drive motors work together to ensure that the friction wheels can drive the ping-pong ball forward with sufficient force and stable speed, so as to achieve a precise serving operation.

[0023] At the same time, by controlling the speed of the drive motor, the rotation speed of the friction wheel can be flexibly adjusted, thereby changing the launch speed of the ping-pong ball;

[0024] The mounting bracket, consisting of two equal-sized mounting plates and a connecting shaft, has a simple structure and is easy to disassemble, install, and maintain.

[0025] The present invention is further configured such that: the guide component is an L-shaped baffle, the L-shaped baffle is fixedly installed on the inner bottom of the ball storage chamber by bolts; the side wall of the L-shaped baffle is provided with a U-shaped groove, the opening of the U-shaped groove faces the ball feeding mechanism, and the width of the U-shaped groove is smaller than the diameter of the ping-pong ball; the L-shaped baffle is fixedly installed at the bottom of the ball storage chamber at an offset of 10°-15° along the ball serving tube path.

[0026] The advantages of this scheme are at least as follows: The L-shaped baffle is installed at a 10°-15° offset along the ball-serving tube path. This not only matches the direction of the ball-serving tube, but also reasonably changes the trajectory of the ping-pong ball in the ball storage chamber. The U-shaped groove opening on the L-shaped baffle is oriented to receive the ball, guiding it into the ball-serving tube and preventing it from running around randomly in the ball storage chamber, thus improving the efficiency and accuracy of the serve. The U-shaped groove opening faces the ball-feeding mechanism, facilitating the passage of the ball-feeding blades and avoiding interference. Furthermore, its width is smaller than the diameter of the ping-pong ball, preventing the ping-pong ball from being accidentally squeezed out between the blades or stuck between the blades and components such as the motor shaft, reducing the risk of ball jamming and blockage, and lowering the probability of malfunctions.

[0027] The present invention is further configured such that: the two mounting plates are provided with protrusions, the protrusions are integrally formed with the mounting plates; the mounting bracket is fixedly connected to one end of the ball-serving tube through the protrusions.

[0028] The advantages of this scheme are at least as follows: by setting a protrusion that is directly fixed to one end of the ball tube, the assembly steps are reduced, making the installation process more convenient and faster. At the same time, by integrally molding the protrusion with the mounting plate and using it to connect the mounting bracket and the ball tube, the overall structural strength of the mounting bracket can be enhanced, making it more stable in supporting components such as the drive motor and friction wheel.

[0029] The present invention is further configured such that: a rubber friction sleeve is fitted on the outer surface of the friction wheel, and the rubber friction sleeve is interference-fitted onto the surface of the friction wheel.

[0030] The advantages of this solution are at least as follows: The rubber friction sleeve is interference-fitted onto the friction wheel. The rubber friction sleeve has good elasticity and frictional properties, which increases the friction force when in contact with the ping-pong ball. This allows the friction wheel to propel the ping-pong ball forward more stably during rotation, reducing slippage on the friction wheel surface. Simultaneously, the rubber friction sleeve prevents direct contact between the friction wheel and the ping-pong ball, reducing hard impacts or excessive pressure that could cause scratches and dents on the ping-pong ball's surface, ensuring the ball retains its original shape and elasticity and preventing deformation. Furthermore, the material of the rubber friction sleeve reduces the noise of hard impacts between the friction wheel and the ping-pong ball, making the serve quieter. In the event of wear, aging, or other damage to the rubber friction sleeve, it can be easily replaced individually without replacing the entire friction wheel.

[0031] The present invention is further configured such that at least three arc-shaped grooves are provided on the first blade and the second blade; the arc-shaped grooves on the first blade and the arc-shaped grooves on the second blade are arranged coaxially.

[0032] The advantages of this scheme are at least as follows: each blade has at least three arc-shaped grooves, which can scoop up multiple ping-pong balls in a single rotation, ensuring the continuity of the ball delivery process. When the first and second blades rotate, the arc-shaped grooves enter the working position in sequence, which can continuously transport the ping-pong balls from the ball storage chamber to the ball delivery tube through the guidance of the guide component. The arc-shaped grooves on the first and second blades are set coaxially, ensuring that the ping-pong balls will not deviate, tilt, or get stuck in the arc-shaped grooves on the first and second blades, thus ensuring the accuracy of the ball delivery.

[0033] The present invention is further configured such that the first blade, the second blade, and the mounting plate are all made of stainless steel metal plate.

[0034] The advantages of this solution are at least as follows: the stainless steel metal plate has a smooth surface, which is not easy to get dusty or dirty, reducing the difficulty of cleaning. At the same time, due to the excellent corrosion resistance of stainless steel, the service life of the equipment is extended, and it is also suitable for outdoor or humid environments.

[0035] In summary, this utility model has at least the following advantages:

[0036] 1. By setting up a ball storage chamber, ball delivery tube, ball feeding mechanism, ball delivery mechanism, and guide components, and through the cooperation of the ball feeding mechanism and guide components, the movement of the ping-pong ball in the ball storage chamber is changed, thereby accurately guiding the ping-pong ball in the ball storage chamber into the ball delivery tube, ensuring the stability of the ping-pong ball's trajectory, reducing ball jamming or deviation, and finally, through the stable ball delivery mechanism, improving the stability of the serve, reducing the problems of serve errors and uneven force. At the same time, the ping-pong ball delivery machine has a simple structural design with fewer parts, which greatly reduces the manufacturing cost while ensuring performance, and also reduces the difficulty of maintenance and repair, making the ball delivery machine more user-friendly.

[0037] 2. By designing the service tube in segments, it is easier to install and disassemble each part of the service tube. When a part is damaged or needs to be replaced, that part can be replaced separately without replacing the entire service tube. The second tube is rotatably installed on the first tube, making it more convenient and flexible to adjust the direction of the service tube. Trainees can manually adjust the pitch angle of the service tube according to their own needs, thereby adjusting the angle of the serve and improving the targeting and diversity of training.

[0038] Meanwhile, the segmented design allows the length of the serving tube to be adjusted according to the trajectory requirements of the table tennis ball. By adjusting the splicing position of the first and second tubes, the serving tube can be shortened or lengthened to adapt to different serving distances.

[0039] 3. By setting several arc-shaped grooves on both the first and second blades, with the diameter of the arc-shaped grooves being larger than the diameter of the ping-pong ball, and the distance between the first and second blades being smaller than the diameter of the ping-pong ball, it is ensured that only one ping-pong ball can enter the arc-shaped groove at a time. This prevents the accumulation and blockage of balls from the source, and avoids the problem of multiple balls mixing or getting stuck in the groove. It also avoids the ball jamming problem caused by multiple balls entering the ball delivery channel at the same time in the existing technology. At the same time, the distance between the blades is smaller than the diameter of the ping-pong ball, which can effectively prevent the ping-pong ball from being accidentally squeezed out between the blades or stuck between the blades and components such as the motor shaft, reducing the risk of ball jamming and blockage, lowering the probability of failure, and improving the reliability of ball delivery. Attached Figure Description

[0040] Figure 1 This is an overall schematic diagram of this embodiment;

[0041] Figure 2 This is a schematic diagram of the overall serving tube in this embodiment;

[0042] Figure 3 This is a schematic diagram of the overall ball distribution mechanism in this embodiment;

[0043] Figure 4 This is one of the overall schematic diagrams of the ball distribution mechanism in this embodiment;

[0044] Figure 5 This is the second overall schematic diagram of the ball distribution mechanism in this embodiment;

[0045] Figure 6 This is a three-dimensional cross-sectional view of the embodiment with the ball tube and ball serving mechanism removed.

[0046] Reference numerals: 1. Base; 2. Ball storage chamber; 3. Ball delivery tube; 301. First pipe; 302. Second pipe; 4. Ball delivery mechanism; 401. Ball delivery motor; 402. Ball delivery blade; 4021. First blade; 4022. Second blade; 4023. Support rod; 4024. Arc groove; 5. Ball delivery mechanism; 501. Drive motor; 502. Friction wheel; 503. Mounting bracket; 5031. Mounting plate; 5032. Connecting shaft; 6. Guide assembly; 601. L-shaped baffle; 602. U-shaped groove; 7. Ball delivery channel; 8. Protrusion; 9. Rubber friction sleeve. Detailed Implementation

[0047] To better understand the above-mentioned objectives, features, and advantages of this utility model, the present utility model will be further described in detail below with reference to the accompanying drawings and specific embodiments. It should be noted that, where there is no conflict, the embodiments of this utility model and the features within them can be combined with each other.

[0048] Many specific details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Therefore, the scope of protection of the present invention is not limited to the specific embodiments disclosed below.

[0049] like Figure 1 As shown (refer to) Figure 6 A ping-pong ball serving machine includes a base 1 and a ball storage chamber 2, with the ball storage chamber 2 located on top of the base 1; it also includes: a serving tube 3, installed on the side wall of the ball storage chamber 2, for storing ping-pong balls to be launched; a ball feeding mechanism 4, installed inside the ball storage chamber 2, for conveying the ping-pong balls to the serving tube 3; a serving mechanism 5, installed at the front end of the serving tube 3, for launching the ping-pong balls; and a guide assembly 6, located at the bottom inside the ball storage chamber 2, for guiding the ping-pong balls into the serving tube 3.

[0050] like Figure 2As shown, in order to facilitate trainees to manually adjust the pitch angle of the serve tube 3 according to their own needs, in some embodiments, the serve tube 3 is a segmented structure, which is spliced ​​together by a first pipe 301 and a second pipe 302. The first pipe 301 is fixedly installed on the side wall of the ball storage chamber 2, and the second pipe 302 is rotatably installed on the first pipe 301. Moreover, the serve tube 3 is designed as a segmented structure, which makes it easier to install and disassemble each part of the serve tube 3. When a part is damaged or needs to be replaced, that part can be replaced separately without replacing the entire serve tube 3. The second pipe 302 is rotatably installed on the first pipe 301, which makes it more convenient and flexible to adjust the direction of the serve tube 3.

[0051] like Figure 3 As shown (refer to) Figure 6 The ball feeding mechanism 4 includes a ball feeding motor 401 and a ball feeding blade 402. The ball feeding motor 401 is fixedly installed at the bottom of the ball storage chamber 2, and the output end of the ball feeding motor 401 extends into the interior of the ball storage chamber 2. The ball feeding blade 402 is fixedly installed at the output end of the ball feeding motor 401.

[0052] In some embodiments, to prevent ball jamming caused by multiple balls entering the serving channel 7 simultaneously, the ball delivery blade 402 includes a first blade 4021 and a second blade 4022; wherein the first blade 4021 and the second blade 4022 are detachably connected by several support rods 4023; both the first blade 4021 and the second blade 4022 are provided with several arc-shaped grooves 4024, the diameter of the arc-shaped grooves 4024 is larger than the diameter of the ping-pong ball, and can only hold one ping-pong ball, ensuring that only one ping-pong ball enters the arc-shaped groove 4024 at a time, thereby avoiding ball accumulation and blockage from the source and preventing the problem of multiple balls mixing or jamming.

[0053] The distance between the first blade 4021 and the second blade 4022 is smaller than the diameter of the ping-pong ball. At the same time, the distance between the blades is smaller than the diameter of the ping-pong ball, which can effectively prevent the ping-pong ball from being accidentally squeezed out between the blades or stuck between the blades and the motor shaft and other components, reducing the risk of ball jamming and blockage, and lowering the probability of failure. Moreover, the ball feeding motor 401 serves as a power source. When the ball speed needs to be adjusted, only the rotation speed of the ball feeding motor 401 needs to be adjusted, thereby precisely controlling the rotation speed of the ball feeding blade 402, and thus achieving precise adjustment of the ball feeding speed and frequency to meet the needs of different training intensities and rhythms.

[0054] It is worth mentioning that at least three arc-shaped grooves 4024 are provided on the first blade 4021 and the second blade 4022, so that multiple ping-pong balls can be scooped up during a single rotation, ensuring the continuity of the ball delivery process. The arc-shaped grooves 4024 on the first blade 4021 are arranged coaxially with each other, which can continuously transport the ping-pong balls from the ball storage chamber 2 and through the guide component 6 to the ball delivery tube 3. The coaxial arrangement of the arc-shaped grooves 4024 on the first blade 4021 and the second blade 4022 ensures that the ping-pong balls will not deviate, tilt or get stuck on the arc-shaped grooves 4024 on the first blade 4021 and the second blade 4022, thus ensuring the accuracy of the ball delivery.

[0055] like Figure 4 , Figure 5 As shown, the ball-serving mechanism 5 includes a drive motor 501, a friction wheel 502, and a mounting frame 503; the drive motor 501 and the friction wheel 502 are configured in at least two sets, the two sets of drive motors 501 are arranged opposite each other and fixedly mounted on the mounting frame 503, the friction wheel 502 is fixedly mounted on the output end of the drive motor 501 and arranged parallel to the mounting frame 503, and a ball-serving channel 7 for launching ping-pong balls is formed between the two friction wheels 502; the mounting frame 503 is formed by fixing two mounting plates 5031 of the same size and shape and several connecting shafts 5032 with bolts.

[0056] Two sets of drive motors 501 are arranged opposite each other and fixedly mounted on the mounting bracket 503, providing a strong and stable power source for launching the ping-pong ball. The two sets of drive motors 501 work together to ensure that the friction wheel 502 can drive the ping-pong ball forward with sufficient force and stable speed, so as to achieve a precise serving operation. At the same time, by controlling the speed of the drive motors 501, the rotation speed of the friction wheel 502 can be flexibly adjusted, thereby changing the launching speed of the ping-pong ball.

[0057] In some other preferred embodiments, in order to more accurately count the number of ping-pong balls, an infrared sensor is installed at the exit of the ball-serving channel 7, and the infrared sensor emits light in the direction of the ball-serving channel 7.

[0058] In order to increase the friction between the friction wheel 502 and the ping-pong ball, in some embodiments, a rubber friction sleeve 9 is fitted on the outer surface of the friction wheel 502. The rubber friction sleeve 9 is interference-fitted onto the surface of the friction wheel 502. While increasing the friction, it also prevents the friction wheel 502 from directly contacting the ping-pong ball, reducing hard collisions or excessive compression that could cause scratches and dents on the surface of the ping-pong ball, and ensuring the original shape and elasticity of the ping-pong ball.

[0059] like Figure 5As shown, in some embodiments, to facilitate the installation of the mounting bracket 503 on the ball tube 3, protrusions 8 are provided on the two mounting plates 5031. The protrusions 8 are integrally formed with the mounting plates 5031. The specific shape of the protrusions 8 is a rectangular structure, which is glued to one end of the ball tube 3. In some other embodiments, a round hole can be opened on one end of the protrusions 8 and the ball tube 3, and a bolt is installed in the round hole. A nut is installed at the end of the bolt. The ball tube 3 can be detachably installed by the bolt and nut. The mounting bracket 503 is fixedly connected to one end of the ball tube 3 through the protrusions 8. It is worth mentioning that the protrusions 8 are integrally formed with the mounting plates 5031 and are used to connect the mounting bracket 503 and the ball tube 3, which can enhance the overall structural strength of the mounting bracket 503 and make it more stable in supporting the drive motor 501 and friction wheel 502 and other components.

[0060] To facilitate dust accumulation on the first blade 4021, the second blade 4022, and the mounting plate 5031, in some preferred embodiments, the first blade 4021, the second blade 4022, and the mounting plate 5031 are all made of stainless steel. This reduces the difficulty of cleaning, and because stainless steel has excellent corrosion resistance, it extends the service life of the equipment. It is also suitable for outdoor or humid environments.

[0061] like Figure 6 As shown, in some embodiments, in order to allow the ping-pong ball to enter the ball-serving tube 3 under the action of the ball-feeding mechanism 4, the guide component 6 is an L-shaped baffle 601. The L-shaped baffle 601 is fixedly installed on the inner bottom of the ball storage chamber 2 by bolts. The side wall of the L-shaped baffle 601 is provided with a U-shaped groove 602. The opening of the U-shaped groove 602 faces the ball-feeding mechanism 4. The opening of the U-shaped groove faces the ball-feeding mechanism 4, which facilitates the passage of the ball-feeding blade 402 and avoids interference. Moreover, the width of the U-shaped groove 602 is smaller than the diameter of the ping-pong ball, which prevents the ping-pong ball from being accidentally squeezed out from between the blades or stuck between the blades and components such as the motor shaft, reducing the risk of ball jamming and blockage. The L-shaped baffle 601 is fixedly installed at the bottom of the ball storage chamber 2 at an offset of 10°-15° along the path of the ball-serving tube 3, so that the movement trajectory of the ping-pong ball in the ball storage chamber 2 can be reasonably changed, so that the opening of the U-shaped groove 602 on the L-shaped plate is oriented to receive the ball and guide the ping-pong ball into the ball-serving tube 3.

[0062] This embodiment also includes an electronic control system, which is fixedly installed inside the base 1. The electronic control system can be implemented using existing technologies. The electronic control system includes:

[0063] The interaction module is used to receive user commands and send them to the control module;

[0064] The control module is a microcontroller, specifically an STM32F103C8T6, which is used to control the operation of the entire ball-launching machine.

[0065] The power module provides electrical energy to the ball-serving machine, powering the entire machine.

[0066] In this embodiment, the interaction module may include a voice module and / or a wireless communication module, wherein:

[0067] The voice module, specifically model ASR01, is used to receive preset user voice commands, such as "turn on the ping-pong ball serving machine", "turn on or off the drive motor", and "turn on or off the ball feeding motor".

[0068] The wireless communication module, specifically the ESP8266-01s, can be remotely set up and monitored via a mobile app or remote control switch using existing wireless communication methods such as Wi-Fi and Bluetooth.

[0069] The voice module and the wireless communication module are both connected to the control module via signals.

[0070] With the assistance of the voice module and the wireless communication module, dual-channel intelligent control via voice and APP is realized. Users can operate the equipment remotely or without contact, and complete operations such as starting and stopping the ball, adjusting the speed, and selecting the mode through voice commands, or remotely set and monitor the status through the mobile APP. This effectively breaks through the physical operation limitations of traditional ball machines and greatly improves the intelligence level and interactivity of the equipment.

[0071] This embodiment may also include a motor drive module that is signal-connected to the control module. The specific model of the motor drive module is MX1616H. The motor drive module is used to control the start and stop of the two drive motors 501 and the ball delivery motor 401. By controlling the drive motors 501 and the ball delivery motor 401, the motor speed can be precisely adjusted, thereby controlling the ball serving frequency and the ball serving force.

[0072] In some embodiments, a temperature and humidity sensor may also be included, wherein the temperature and humidity sensor is a DHT11, used to collect temperature and humidity data of the environment in which the ball-serving machine is located.

[0073] In some embodiments, an OLED display module may also be included to dynamically display current temperature and humidity data, remaining ball count, WiFi connection status, etc., to enhance the system's visual interaction capabilities and facilitate users to monitor the device's operating status in real time.

[0074] In some embodiments, the system also includes a push-button switch, specifically a push-button switch with three buttons: a function switch button, an increment button, and a decrement button. Users can manually select different serve modes and adjust the delay time using these buttons.

[0075] The specific working process and beneficial effects of this utility model are as follows:

[0076] After the user issues a start command via buttons, voice module, or wireless communication module, the control module initializes each module and starts the motor drive module according to the set parameters. The motor drive module controls the start of drive motor 501 and ball delivery motor 401, so that ball delivery motor 401 drives ball delivery blade 402 to rotate in ball storage chamber 2. While ball delivery blade 402 rotates, it drives the ping-pong ball in ball storage chamber 2 into arc groove 4024. Then, the guide component 6 changes the movement path of the ping-pong ball and continuously delivers the ping-pong ball to ball delivery tube 3. Then, drive motor 501 starts and launches the ping-pong ball to be launched in ball delivery tube 3 from ball delivery channel 7.

[0077] Because the ball delivery blade 402 is provided with an arc-shaped groove 4024, and the diameter of each arc-shaped groove 4024 is larger than the diameter of the ping-pong ball, and the distance between the first blade 4021 and the second blade 4022 is smaller than the diameter of the ping-pong ball, it ensures that only one ping-pong ball can enter the arc-shaped groove 4024 at a time, thus avoiding the accumulation and blockage of balls from the source, preventing the problem of multiple balls mixing or getting stuck in the groove, and avoiding the problem of ball jamming caused by multiple balls entering the ball delivery tube 3 at the same time in the prior art;

[0078] When the serving angle needs to be adjusted, since the second pipe 302 is rotatably mounted on the first pipe 301, the trainee only needs to manually adjust the pitch angle of the serving tube 3 to adjust the serving angle. When the serving speed needs to be adjusted, only the rotation speed of the ball feeding motor 401 and the rotation speed of the drive motor 501 need to be adjusted to precisely control the rotation speed of the ball feeding blade 402 and the rotation speed of the friction wheel 502, thereby achieving precise adjustment of the ball feeding speed and frequency, as well as changing the launch speed of the ping-pong ball to meet the needs of different training intensities and rhythms.

[0079] By coordinating the ball feeding mechanism 4 and the guide component 6, the movement of the ping-pong ball in the ball storage chamber 2 is changed, thereby accurately guiding the ping-pong ball in the ball storage chamber 2 into the ball serving tube 3. This ensures the stability of the ping-pong ball's trajectory, reduces ball jamming or deviation, and ultimately enables a stable ball serving through the ball serving mechanism 5. This improves the stability of the serving and reduces serving errors and uneven force. At the same time, the ping-pong ball serving machine has a simple structural design with fewer parts, which greatly reduces the manufacturing cost while ensuring performance. It also reduces the difficulty of maintenance and repair, making the ball serving machine more user-friendly.

[0080] Although preferred embodiments of the present invention have been described, those skilled in the art, upon learning the basic inventive concept, can make other changes and modifications to these embodiments. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments as well as all changes and modifications falling within the scope of the present invention.

[0081] Obviously, those skilled in the art can make various modifications and variations to this utility model without departing from its spirit and scope. Therefore, if these modifications and variations fall within the scope of the claims of this utility model and their equivalents, this utility model also intends to include these modifications and variations.

Claims

1. A ping-pong ball serving machine, comprising a base (1) and a ball storage compartment (2), characterized in that: The ball storage compartment (2) is located on top of the base (1); It also includes: a ball-serving tube (3), installed on the side wall of the ball storage chamber (2), for storing ping-pong balls to be launched; The ball delivery mechanism (4) is installed inside the ball storage chamber (2) and is used to deliver the ping-pong ball to the ball delivery tube (3). The ball-serving mechanism (5) is installed at the front end of the ball-serving tube (3) and is used to launch ping-pong balls; The guide component (6) is located at the bottom of the ball storage chamber (2) and is used to guide the ping-pong ball into the ball serving tube (3).

2. The ping-pong ball serving machine according to claim 1, characterized in that: The ball-serving tube (3) has a segmented structure and is composed of a first pipe (301) and a second pipe (302). The first pipe (301) is fixedly installed on the side wall of the ball storage chamber (2), and the second pipe (302) is rotatably installed on the first pipe (301).

3. The ping-pong ball serving machine according to claim 1, characterized in that: The ball feeding mechanism (4) includes: a ball feeding motor (401) and a ball feeding blade (402). The ball feeding motor (401) is fixedly installed at the bottom of the ball storage chamber (2), and the output end of the ball feeding motor (401) extends into the interior of the ball storage chamber (2); The ball-feeding blade (402) is fixedly installed at the output end of the ball-feeding motor (401).

4. The ping-pong ball serving machine according to claim 3, characterized in that: The ball delivery blade (402) includes a first blade (4021) and a second blade (4022). The first blade (4021) and the second blade (4022) are detachably connected by a number of support rods (4023); The first blade (4021) and the second blade (4022) are each provided with a plurality of arc-shaped grooves (4024). The diameter of the arc-shaped grooves (4024) is larger than the diameter of a ping-pong ball and can only hold one ping-pong ball. The distance between the first blade (4021) and the second blade (4022) is smaller than the diameter of a ping-pong ball.

5. The ping-pong ball serving machine according to claim 4, characterized in that: The ball-serving mechanism (5) includes a drive motor (501), a friction wheel (502), and a mounting bracket (503). The drive motor (501) and friction wheel (502) are provided in at least two sets, and the two sets of drive motors (501) are arranged opposite to each other and fixedly mounted on the mounting bracket (503); The friction wheel (502) is fixedly installed at the output end of the drive motor (501) and is arranged in parallel on the mounting bracket (503), and a ball-launching channel (7) for launching ping-pong balls is formed between the two friction wheels (502). The mounting bracket (503) is formed by fixing two mounting plates (5031) of the same size and shape and several connecting shafts (5032) together with bolts.

6. The ping-pong ball serving machine according to claim 1, characterized in that: The guide component (6) is an L-shaped baffle (601), which is fixedly installed on the inner bottom of the ball storage chamber (2) by bolts; The side wall of the L-shaped baffle (601) is provided with a U-shaped groove (602), the opening of the U-shaped groove (602) faces the ball feeding mechanism (4), and the width of the U-shaped groove (602) is smaller than the diameter of the ping-pong ball; The L-shaped baffle (601) is fixedly installed at the bottom of the ball storage chamber (2) at an offset of 10°-15° along the path of the ball-launching tube (3).

7. The ping-pong ball serving machine according to claim 5, characterized in that: The two mounting plates (5031) are provided with protrusions (8), which are integrally formed with the metal plates; The mounting bracket (503) is fixedly connected to one end of the ball-serving tube (3) via a protrusion (8).

8. The ping-pong ball serving machine according to claim 5, characterized in that: The outer surface of the friction wheel (502) is fitted with a rubber friction sleeve (9), which is interference-fitted onto the surface of the friction wheel (502).

9. The ping-pong ball serving machine according to claim 4, characterized in that: At least three arc-shaped grooves (4024) are provided on the first blade (4021) and the second blade (4022); the arc-shaped grooves (4024) on the first blade (4021) are coaxially arranged vertically with the arc-shaped grooves (4024) on the first blade (4021).

10. The ping-pong ball serving machine according to claim 5, characterized in that: The first blade (4021), the second blade (4022), and the mounting plate (5031) are all made of stainless steel metal plate.

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