A table tennis training device

Abstract

The application discloses a table tennis training device, which comprises a base, a table tennis ball collecting bin, a table tennis ball conveying pipeline and a table tennis ball serving device which are connected with each other on the base, characterized in that the table tennis ball conveying pipeline comprises a ball preparation ring channel which is fixed relative to the base and has an overall vertical circular ring shape; a slit is arranged on the inner side of the ball preparation ring channel along the ring shape; a connecting ring is further arranged outside the slit; a plurality of partitions are uniformly distributed along the ring shape on the inner side of the ball preparation ring channel; the partitions divide the inner cavity of the connecting ring into a plurality of ball spaces; a connecting rod is fixedly arranged at one end of each partition and passes through the slit and is fixed on the connecting ring; and a rotating shaft is arranged in the middle of the connecting ring and is in transmission connection with a conveying motor. The application can realize the adjustment of the serving angle range while maintaining good stability, can further generate the uncertainty of the serving angle through the increase of disturbance, and greatly improves the interestingness and effectiveness of the training.

Description

Technical Field

[0001] This invention relates to the field of sports training equipment technology, specifically to a table tennis training device. Background Technology

[0002] A table tennis ball serving machine is a device that continuously launches pre-loaded table tennis balls for users to practice receiving. Automatic table tennis ball serving machines are suitable for both recreational and fitness purposes, as well as professional training, and can be used in communities, schools, homes, and professional training facilities. Professional table tennis players and training venues typically purchase table tennis ball serving machines for training purposes.

[0003] Existing table tennis ball-serving training devices typically use pneumatic principles to launch the ball, relying on air pressure. This type of pneumatic table tennis training device has the following drawbacks: 1. Launching the ball relies on air pressure. To increase launch speed for training high-speed ball-hitting reactions, a larger air pressure output is required. This causes the compressed air to rush out with the ball, significantly impacting the return shot and hindering normal return training. 2. To maximize air pressure on the ball and prevent deflation, the ball channel is usually designed to be small, with only a small gap between the ball and the channel. This generates significant noise during ball movement, affecting the user's training process. 3. Adjusting the launch angle without affecting launch speed is difficult with pneumatic devices. The serves can easily become predictable, and once the user masters this pattern, it reduces the fun and effectiveness of training. 4. Air pressure devices are prone to deflation or insufficient air pressure, resulting in poor stability.

[0004] Therefore, existing pneumatic table tennis ball-serving machines are more suitable for recreational use and not for actual training. It is necessary to design a table tennis training device that launches the ball mechanically to better simulate the actual receiving and serving situation in table tennis, making it more suitable for table tennis receiving and serving training. Summary of the Invention

[0005] In view of the shortcomings of the prior art, the technical problem to be solved by the present invention is: how to provide a more stable table tennis training device that can achieve serving by mechanical action, and further make it easy to adjust the serve, thereby improving the fun and effectiveness of training.

[0006] To solve the above-mentioned technical problems, the present invention adopts the following technical solution:

[0007] A table tennis training device includes a base with interconnected table tennis ball collecting chamber, table tennis ball conveying pipe, and table tennis ball serving device. The table tennis ball conveying pipe includes a ball preparation ring fixed relative to the base and forming a vertical circular shape. The pipe also includes a ball-infeeding channel connecting the ball preparation ring and the ball collecting chamber, and a ball-outfeeding channel connecting one horizontal end of the ball preparation ring and the ball serving device. The inner diameter of the ball preparation ring is larger than the diameter of a table tennis ball but less than twice the diameter. A slit is provided along the inner side of the ball preparation ring, and a connecting ring is provided outside the slit. Multiple partitions are evenly distributed along the inner circle of the ball preparation ring, dividing the inner cavity of the connecting ring into several annular spaces with dimensions larger than the diameter of a table tennis ball but less than twice the diameter. A connecting rod is fixedly provided at one end of each partition, extending through the slit and fixed to the connecting ring. A rotating shaft is provided in the middle of the connecting ring and is connected to a conveying motor.

[0008] In this way, when the equipment is running, the conveyor motor drives the connecting ring and its partitions to rotate within the ball preparation ring. Ping-pong balls enter from the ball collecting chamber through the ball entering channel into the various empty ball-holding spaces within the ball preparation ring. The ping-pong balls in each space are rotated by the partitions until they enter the ball exit channel, where they are launched by the launching device. The serving speed can be adjusted by the speed of the conveyor motor. This ping-pong ball conveying pipeline structure not only ensures the orderly conveying of each ping-pong ball but also guarantees consistent conditions before each ball is launched, greatly improving the stability of the launching process. The launching device can be implemented using an existing structure capable of performing the launching function.

[0009] Furthermore, the ping-pong ball conveying pipe and the ping-pong ball serving device each have two sets arranged horizontally at intervals.

[0010] This makes it convenient to practice doubles receiving.

[0011] Furthermore, the ping-pong ball collecting compartment includes a first collecting compartment and a second collecting compartment.

[0012] In this way, multiple ball collection compartments can improve filling efficiency.

[0013] Furthermore, the first ball collection chamber is located above and behind the ping-pong ball conveying pipe, and the second ball collection chamber is located below and in front of the ping-pong ball conveying pipe.

[0014] This makes it convenient to load ping-pong balls from all directions.

[0015] Furthermore, the first ball storage area has two goal-scoring channels corresponding to each reserve ball ring.

[0016] This makes it easier to improve the efficiency of loading ping-pong balls.

[0017] Furthermore, a channel switch is installed at the connection between the ping-pong ball collection chamber and the ball-scoring channel.

[0018] This makes it easy to close the channel when reloading is not required.

[0019] Furthermore, the outer perimeter of the ball preparation ring is also surrounded by an outer shell.

[0020] This makes it easier to better protect the structure of the ping-pong ball delivery pipes inside.

[0021] Furthermore, at least the upper half of the outer shell is made of a transparent material.

[0022] This makes it easy to observe whether the ping-pong balls inside have been completely filled.

[0023] Furthermore, Mecanum wheels are also provided around the lower part of the base. This facilitates movement of the control device in different directions. The Mecanum wheels themselves are existing products, and their structure will not be described in detail here.

[0024] Furthermore, a storage box is provided between the base and the outer shell, making it convenient to store other training equipment such as ping-pong paddles.

[0025] Furthermore, the ping-pong ball serving device includes a pair of extrusion wheels arranged side by side at the end of the ball delivery channel. The middle position of the extrusion wheels is positioned directly opposite the center position of the ball delivery channel. The extrusion wheels are connected to the extrusion motor and can be driven to rotate outward relative to each other, so that the outer side of the extrusion wheels forms a launching port. The distance between the side by side extrusion wheels is less than the diameter of the ping-pong ball, and the difference between the two is less than the extrusion deformation limit size of the extrusion wheels and the ping-pong ball.

[0026] In this way, the ping-pong balls are collected in the ball collection chamber and then enter the ping-pong ball serving device through the ball delivery pipe. The rotation of paired compression rollers clamps and squeezes the ping-pong balls, ejecting them from the launch port. This relative rotation of the compression rollers gives the ping-pong balls launch speed, achieving a mechanical serving effect. It is noiseless and does not affect the receiving of the ball due to airflow, avoiding the drawbacks of pneumatic serving systems and making it more suitable for live ball training.

[0027] Furthermore, the table tennis serving device also includes a serving frame, with a serving cavity running through the lower part of the serving frame. The squeeze wheel is vertically installed in the serving cavity, and a power cavity is located at the upper part of the serving frame. The squeeze motor is installed in the power cavity, and the end of the main shaft of the squeeze wheel passes through the power cavity and is connected to the squeeze motor by means of a gear transmission pair.

[0028] This can improve the consistency of your serve.

[0029] Furthermore, the rear sides of the serving frame and the middle part of the base plate are each hinged to the front end of a telescopic cylinder, and the rear ends of the three telescopic cylinders are each hinged to the outer shell of the ball preparation ring (by means of horizontal hinges).

[0030] These three telescopic cylinders maintain the stability of the serving frame installation. More importantly, they allow for easy adjustment of the serving frame's left-right or up-down sway by controlling the extension and retraction of the cylinders, thereby achieving control over the direction of the table tennis serve.

[0031] Furthermore, the table tennis serving device also includes a striking mechanism, which is located on the outer side of the inner ring of the ball preparation channel, directly opposite the ball delivery channel. The striking mechanism includes a striking rod positioned directly opposite the ball delivery channel. The striking rod is vertically mounted at the end of the striking shaft, which is connected to a striking motor. A striking hole corresponding to the striking rod is also provided on the inner ring sidewall of the ball preparation channel, directly opposite the ball delivery channel. The rotation path of the striking rod passes through the striking hole and enters the ball-holding space in a direction opposite to the ball delivery channel.

[0032] This allows for control of the striking motor's speed, ensuring that during operation, the striking rod rotates precisely once into the striking port and actively strikes the ping-pong ball out of the container space each time it passes through the ball outlet. This mechanism, through its structure, ensures that all ping-pong balls within the container are consistently struck. Furthermore, the initial outward velocity imparted to the ball after impact allows it to better utilize its momentum to reach the pressure rollers of the serving frame, preventing the ball from bouncing back due to insufficient initial velocity. This significantly improves the device's reliability and stability. In practice, the striking motor and the conveying motor can be the same motor (or independent motors). By pre-calculating the transmission ratio, the striking rod can be ensured to strike precisely once for each rotation of the connecting ring within the ball outlet space. This further enhances stability. In addition, the ball release channel and the hitting stick are preferably set in a horizontal direction during implementation to ensure that the above-mentioned hitting process is more stable and reliable.

[0033] Furthermore, the striking rod is a cross-shaped arrangement. This allows for better control over the matching of the striking speed of the striking rod and the rotation speed of the connecting ring.

[0034] Furthermore, the table tennis serving device also includes a ball-disrupting mechanism, which includes a flexible ribbon positioned on the side of the table tennis ball's path, either in front of or behind the squeezing wheel.

[0035] In this way, when the ping-pong ball passes through the flexible ribbon, the airflow causes the ribbon to sway and irregularly contact the ball's surface, introducing a small, unpredictable disturbance to the ball during its journey. This results in the ping-pong ball, after being launched from the launch port, maintaining its general direction while undergoing irregular, random adjustments in its launch angle within a certain range. This significantly improves the realism of the receiving simulation, increases the difficulty of receiving, and avoids the shortcomings of existing ball-serving machines that reduce training effectiveness (for training purposes) and fun (for recreational sports) due to their predictable serves. The flexible ribbons are preferably arranged in pairs symmetrically to prevent unilateral interference from causing the ball to deviate from a fixed direction.

[0036] Furthermore, the flexible ribbon is positioned 1-5 millimeters away from the path of the ping-pong ball, and its length is 0.5-2 times the diameter of the ping-pong ball. This effectively generates the aforementioned disturbance effect without excessively affecting the ball's trajectory.

[0037] Furthermore, as a preferred installation method for the flexible ribbon, a section of mounting cylinder can be detachably screwed onto the ball outlet channel, and the flexible ribbon is installed on the inner surface of the mounting cylinder.

[0038] This makes it easier to set up flexible ribbons.

[0039] Furthermore, a slot is provided on the inner surface of the mounting cylinder, and a rotatable locking plate is correspondingly engaged in the slot. The fixed end of the flexible ribbon is engaged and fixed between the locking plate and the slot.

[0040] This allows for easy installation and removal of the flexible ribbon, and the length of the ribbon can be adjusted as needed, thereby regulating the range of irregular changes in the serve angle and controlling the difficulty level of the serve.

[0041] As an alternative installation method, the flexible ribbon can be installed on the serve frame in front of the squeeze roller. This is easier to install and provides better disturbance, but the drawback is that excessive disturbance can sometimes cause the serve angle to deviate from the intended range, leading to loss of control.

[0042] In summary, this invention enables the firing of a ping-pong ball through mechanical action, maintaining good stability while allowing for adjustment of the serving angle range. Furthermore, it can introduce uncertainty in the serving angle by increasing disturbances, greatly enhancing the fun and effectiveness of training. Attached Figure Description

[0043] Figure 1 This is a schematic diagram of the structure of a table tennis training device according to the present invention.

[0044] Figure 2 for Figure 1The outer shell, ball preparation ring, and ball exit channel have been removed to show a schematic diagram of the internal partition structure.

[0045] Figure 3 for Figure 1 The diagram shows a separate structural schematic of the ping-pong ball collection chamber and the ping-pong ball conveying pipeline. The ball preparation ring is omitted on one side of the diagram to show the internal partition structure.

[0046] Figure 4 for Figure 1 A schematic diagram of a standalone table tennis ball serving device, with the upper structure of the serving frame omitted to show the internal motor.

[0047] Figure 5 for Figure 4 A bottom view.

[0048] Figure 6 for Figure 1 A schematic diagram of the structure of the individual ball-disrupting mechanism and its mounting cylinder. Detailed Implementation

[0049] The present invention will now be described in further detail with reference to the accompanying drawings.

[0050] Detailed implementation method: See Figure 1-6 As shown, a table tennis training device includes a base 1, on which a table tennis ball collecting chamber, a table tennis ball conveying pipe, and a table tennis ball serving device are designed to be interconnected. The table tennis ball conveying pipe includes a ball preparation ring 2 fixed relative to the base and forming a vertical circular shape. The table tennis ball conveying pipe also includes a ball-entry channel 3 connecting the ball preparation ring and the table tennis ball collecting chamber, and a ball-out channel 4 connecting one end of the ball preparation ring in the horizontal direction to the table tennis ball serving device. The inner cavity of the ball preparation ring 2... The diameter of the cross-section circle is larger than the diameter of a ping-pong ball but less than twice the diameter of a ping-pong ball. A slit is set along the inner side of the ball preparation ring 2 along its own ring shape. A connecting ring 5 is also set outside the slit. Multiple partitions 6 are evenly distributed along the inner ring of the ball preparation ring. The partitions 6 divide the inner cavity of the connecting ring into several annular spaces with a size larger than the diameter of a ping-pong ball but less than twice the diameter of a ping-pong ball. A connecting rod is fixed at one end of each partition 6, passing through the slit and fixed to the connecting ring 5. A rotating shaft 7 is set in the middle of the connecting ring 5 and is connected to the conveyor motor for transmission.

[0051] In this way, when the equipment is running, the conveyor motor drives the connecting ring and its partitions to rotate within the ball preparation ring. Ping-pong balls enter from the ball collecting chamber through the ball entering channel into the various empty ball-holding spaces within the ball preparation ring. The ping-pong balls in each space are rotated by the partitions until they enter the ball exit channel, where they are launched by the launching device. The serving speed can be adjusted by the speed of the conveyor motor. This ping-pong ball conveying pipeline structure not only ensures the orderly conveying of each ping-pong ball but also guarantees consistent conditions before each ball is launched, greatly improving the stability of the launching process. The launching device can be implemented using an existing structure capable of performing the launching function.

[0052] The table tennis ball conveying pipe and the table tennis ball serving device each have two sets arranged horizontally at intervals.

[0053] This makes it convenient to practice doubles receiving.

[0054] The ping-pong ball collection chamber includes a first ball collection chamber 8 and a second ball collection chamber 9.

[0055] In this way, multiple ball collection compartments can improve filling efficiency.

[0056] The first ball collection chamber 8 is located above and behind the ping-pong ball conveying pipe, while the second ball collection chamber 9 is located below and in front of the ping-pong ball conveying pipe.

[0057] This makes it convenient to load ping-pong balls from all directions.

[0058] Among them, the first ball storage 8 has two goal-scoring channels for each ball preparation ring.

[0059] This makes it easier to improve the efficiency of loading ping-pong balls.

[0060] Among them, a channel switch 10 is also installed at the connection between the ping-pong ball collection chamber and the ball-scoring channel 3.

[0061] This makes it easy to close the channel when reloading is not required.

[0062] Among them, the outer perimeter of the ball preparation ring 2 is also surrounded by a shell 11.

[0063] This makes it easier to better protect the structure of the ping-pong ball delivery pipes inside.

[0064] The outer shell 11 is made of at least the upper half of a transparent material (the transparency is not shown in the figure).

[0065] This makes it easy to observe whether the ping-pong balls inside have been completely filled.

[0066] The base 1 is equipped with Mecanum wheels 12 around its lower perimeter. This facilitates movement of the control device in different directions. The Mecanum wheels themselves are existing products, and their structure will not be described in detail here.

[0067] A storage box 13 is also provided between the base 1 and the outer shell 11. This is convenient for storing ping-pong paddles and other training equipment.

[0068] The ping-pong ball serving device includes a pair of extrusion rollers 14 arranged side by side at the end of the ball delivery channel. The middle position of the extrusion rollers 14 is directly opposite the center position of the ball delivery channel. The extrusion rollers 14 are connected to the extrusion motor 15 and can be driven to rotate outward relative to each other, so that the outer side of the extrusion rollers 14 forms a launching port. The distance between the side by side extrusion rollers is less than the diameter of the ping-pong ball and the difference between the two is less than the extrusion deformation limit size of the extrusion rollers and the ping-pong ball.

[0069] In this way, the ping-pong balls are collected in the ball collection chamber and then enter the ping-pong ball serving device through the ball delivery pipe. The rotation of paired compression rollers clamps and squeezes the ping-pong ball, ejecting it from the launch port. This method of using the relative rotation of the compression rollers to give the ping-pong ball launch speed achieves a mechanical serve effect, eliminating noise and preventing airflow from affecting the return of the ball. It avoids the drawbacks of pneumatic serves and is more suitable for live ball training. During implementation, a rubber sleeve is installed on the outer surface of the compression rollers to increase the compression deformation of the rollers and the ping-pong ball, providing better launch force.

[0070] The table tennis serving device also includes a serving frame 16. The lower part of the serving frame 16 has a serving cavity that runs through the front and back. The squeeze wheel is vertically installed in the serving cavity. The upper part of the serving frame 16 has a power cavity. The squeeze motor 15 is installed in the power cavity. The end of the main shaft of the squeeze wheel passes through the power cavity and is connected to the squeeze motor 15 by means of a gear transmission pair.

[0071] This can improve the consistency of your serve.

[0072] The ball-serving frame 16 has its rear ends on both sides and the middle part of the base plate hinged to the front end of a telescopic cylinder 17. The rear ends of the three telescopic cylinders 17 are each hinged to the outer shell of the ball preparation ring (by means of horizontal hinges).

[0073] These three telescopic cylinders maintain the stability of the serving frame installation. More importantly, they allow for easy adjustment of the serving frame's lateral or vertical sway through telescopic control, thereby controlling the direction of the table tennis serve. In practice, electric cylinders can be used for the telescopic cylinders, facilitating fine-tuning.

[0074] The table tennis serving device also includes a hitting mechanism, which is located on the outer side of the inner ring of the ball preparation channel, directly opposite the ball delivery channel. The hitting mechanism includes a hitting rod 18 positioned directly opposite the ball delivery channel. The hitting rod 18 is vertically mounted at the end of the hitting shaft 19, which is connected to a hitting motor. A hitting hole 20 corresponding to the hitting rod is also provided on the inner ring sidewall of the ball preparation channel, directly opposite the ball delivery channel. The rotation path of the hitting rod passes through the hitting hole and enters the ball holding space in a direction opposite to the ball delivery channel.

[0075] This allows for control of the striking motor's speed, ensuring that during operation, the striking rod rotates precisely once into the striking port and actively strikes the ping-pong ball out of the container space each time it passes through the ball outlet. This mechanism, through its structure, ensures that all ping-pong balls within the container are consistently struck. Furthermore, the initial outward velocity imparted to the ball after impact allows it to better utilize its momentum to reach the pressure rollers of the serving frame, preventing the ball from bouncing back due to insufficient initial velocity. This significantly improves the device's reliability and stability. In practice, the striking motor and the conveying motor can be the same motor (or independent motors). By pre-calculating the transmission ratio, the striking rod can be ensured to strike precisely once for each rotation of the connecting ring within the ball outlet space. This further enhances stability. In addition, the ball release channel and the hitting stick are preferably set in a horizontal direction during implementation to ensure that the above-mentioned hitting process is more stable and reliable.

[0076] The striking rod 18 is a cross-shaped arrangement. This allows for better control over the matching of the striking speed of the striking rod and the rotation speed of the connecting ring.

[0077] In addition, during implementation, the opening of the ball preparation ring is located on the outer side of the inner side, offset from the ring axis, while the striking mechanism is located on the inner side of the ball preparation ring, offset from the ring axis. This arrangement allows the striking stick to better hit the center of the ping-pong ball.

[0078] The table tennis ball serving device also includes a ball-disrupting mechanism, which includes a pair of flexible ribbons 21 positioned on either side of the table tennis ball's path in front of or behind the squeezing wheel.

[0079] In this way, when the ping-pong ball passes through the flexible ribbon, the airflow causes the ribbon to sway and irregularly contact the surface of the ping-pong ball, introducing a small, unpredictable disturbance to the ball during its journey. Thus, after the ping-pong ball is launched from the launch port, while maintaining its general direction, its launch angle undergoes irregular and random adjustments within a certain range. This greatly improves the realism of the receiving simulation, increases the difficulty of receiving the ball, and avoids the shortcomings of existing ball-serving machines that reduce the effectiveness of training (for training purposes) and the fun (for recreational sports) due to their predictable ball serves.

[0080] The flexible ribbon 21 is positioned 1-5 millimeters away from the path of the ping-pong ball, and its length is 0.5-2 times the diameter of the ping-pong ball. This design effectively generates the aforementioned disturbance effect without excessively affecting the ball's trajectory.

[0081] In this embodiment, as a preferred installation method for the flexible ribbon 21, a section of mounting cylinder 22 is detachably screwed onto the ball outlet channel, and the flexible ribbon 21 is installed on the inner surface of the mounting cylinder 22.

[0082] This makes it easier to set up flexible ribbons.

[0083] The inner surface of the mounting cylinder 22 is provided with a slot 23, and a rotatable locking plate 24 is correspondingly locked in the slot. The fixed end of the flexible ribbon 21 is locked and fixed between the locking plate and the slot.

[0084] This allows for easy installation and removal of the flexible ribbon, and the length of the ribbon can be adjusted as needed, thereby regulating the range of irregular changes in the serve angle and controlling the difficulty level of the serve.

[0085] As an alternative installation method, the flexible ribbon can be installed on the serve frame in front of the squeeze wheel (not shown in this embodiment). This is easier to install and provides better disturbance, but the drawback is that excessive disturbance can sometimes cause the serve angle to deviate from the predetermined range, leading to loss of control.

Claims

1. A table tennis training device, comprising a base, on which are designed interconnected a table tennis ball collecting chamber, a table tennis ball conveying pipe, and a table tennis ball serving device, characterized in that, The ping-pong ball conveying pipeline includes a ball preparation ring fixed relative to the base and forming a vertical circular shape. The ping-pong ball conveying pipeline also includes a ball inlet channel connecting the ball preparation ring and the ping-pong ball collection chamber, and a ball outlet channel connecting one end of the ball preparation ring in the horizontal direction and the ping-pong ball serving device. The diameter of the inner cavity of the ball preparation ring is larger than the diameter of the ping-pong ball but less than twice the diameter of the ping-pong ball. A slit is provided along the inner side of the ball preparation ring along its own ring shape. A connecting ring is also provided outside the slit. Multiple partitions are evenly distributed along the ring shape inside the ball preparation ring. The partitions divide the inner cavity of the connecting ring into several ball-holding spaces with an annular size larger than the diameter of the ping-pong ball but less than twice the diameter of the ping-pong ball. A connecting rod is fixedly provided at one end of each partition, passing through the slit and fixed to the connecting ring. A rotating shaft is provided in the middle of the connecting ring and is connected to the conveying motor for transmission. The ping-pong ball serving device includes a pair of extrusion wheels arranged side by side at the end of the ball delivery channel. The middle position of the extrusion wheels is directly opposite the middle position of the ball delivery channel. The extrusion wheels are connected to the extrusion motor and can be driven to rotate outward relative to each other, so that the outer side of the extrusion wheels forms a launching port. The distance between the side by side extrusion wheels is less than the diameter of the ping-pong ball and the difference between the two is less than the extrusion deformation limit size of the extrusion wheels and the ping-pong ball. The table tennis serving device also includes a serving frame, with a serving cavity running through the front and back at the lower part of the serving frame. The squeeze wheel is vertically installed in the serving cavity, and a power cavity is located at the upper part of the serving frame. The squeeze motor is installed in the power cavity, and the end of the main shaft of the squeeze wheel passes through the power cavity and is connected to the squeeze motor by means of a gear transmission pair. The rear sides of the serving frame and the middle part of the base plate are each hinged to the front end of a telescopic cylinder. The rear ends of the three telescopic cylinders are each hinged to the outer shell of the ball preparation ring. The table tennis serving device also includes a striking mechanism located on the outer side of the inner ring of the ball preparation channel, directly opposite the ball delivery channel. The striking mechanism includes a striking rod positioned opposite the ball delivery channel, vertically mounted at the end of a striking shaft connected to a striking motor. A striking opening corresponding to the striking rod is also provided on the inner ring sidewall of the ball preparation channel, opposite the ball delivery channel. The striking rod's rotation path passes through the striking opening and enters the ball-holding space in a direction opposite to the ball delivery channel. The striking motor's rotation speed ensures that during device operation, the striking rod rotates and enters the striking opening once for each ball-holding space as it passes the ball delivery channel position. The table tennis serving device also includes a ball-disrupting mechanism, which includes a flexible ribbon positioned on the side of the table tennis ball's path in front of or behind the squeezing wheel. When the table tennis ball passes through the flexible ribbon, the airflow causes the ribbon to flutter and irregularly contact the surface of the table tennis ball.

2. The table tennis training device as described in claim 1, characterized in that, The ping-pong ball conveying pipe and the ping-pong ball serving device each have two sets arranged horizontally at intervals.

3. The table tennis training device as described in claim 1, characterized in that, The ping-pong ball collection chamber includes a first ball collection chamber and a second ball collection chamber; The first ball collection chamber is located above and behind the ping-pong ball conveying pipe, and the second ball collection chamber is located below and in front of the ping-pong ball conveying pipe. The first ball storage area has two goal-scoring channels for each reserve ball ring; A channel switch is also installed at the connection between the ping-pong ball collection chamber and the ball-scoring channel.

4. The table tennis training device as described in claim 1, characterized in that, The outer perimeter of the ball preparation ring is also surrounded by an outer shell; The outer shell is made of at least the upper half of a transparent material.

5. The table tennis training device as described in claim 4, characterized in that, Mecanum wheels are also provided around the lower part of the base; There is also a storage box between the base and the outer shell.

6. The table tennis training device as described in claim 1, characterized in that, The striking stick is a cross-shaped arrangement.

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