Ball serving machine for table tennis training

Abstract

The invention discloses a ball serving machine and adjusting assembly for table tennis training in the technical field of ball serving equipment, and the ball serving machine and adjusting assembly comprises a mounting seat, a lifting part is arranged in the mounting seat, a lifting seat is mounted at the top of the lifting part, a rotating part is arranged in the lifting seat, a rotating disc and a ball serving assembly are mounted at the top of the rotating part, and the ball serving assembly is arranged at the top of the rotating disc. The device comprises a frame body, the frame body is installed at the top of a rotating disc, a vertical plate is installed on the left side of the frame body, a ball outlet pipe is connected to the right side of the vertical plate, a funnel is connected to the top of the ball outlet pipe, a driving piece is arranged between the ball outlet pipe and the vertical plate, and a limiting piece is arranged at the bottom of the ball outlet pipe. Through cooperative arrangement of the lifting seat, the rotating piece and the rotating disc, the table tennis ball serving direction can be automatically changed, the table tennis ball serving direction of the ball outlet pipe can be continuously changed, then the reaction capacity and the strain capacity of people can be improved, and the training level can be improved.

Description

Technical Field

[0001] The invention relates to the technical field of ball serving equipment, in particular to a ball serving machine for table tennis training. Background Art

[0002] Table tennis, as China's national sport, is a popular sport that includes offense, confrontation and defense. In order to achieve better results in table tennis games, table tennis training is necessary. During table tennis training, in order to improve the training level of table tennis trainers, people will choose to use table tennis serving machines to serve instead of people, thereby achieving the purpose of training table tennis trainers.

[0003] Chinese invention patent announcement number CN217697862U discloses a serving device for table tennis training, which includes a support, a box body is fixedly installed on the top of the support by welding, a funnel is fixedly installed in the box body by welding, a mounting groove is opened on one side of the support, a second discharge pipe is fixedly installed in the mounting groove by welding, a first through hole is opened at the bottom of the box body, the first through hole is communicated with the mounting groove, a first discharge pipe is fixedly installed in the first through hole, and the two ends of the first discharge pipe are respectively fixedly connected with the bottom of the funnel and the outer side of the second discharge pipe. During use, the present invention can avoid table tennis balls piling up and clogging, thereby avoiding interruption of serving, improving training effect, simple structure, and easy use, but the above-mentioned serving machine serves in a fixed direction. When the direction needs to be changed, people have to change it manually, which is not random, thereby reducing the training effect. Summary of the invention

[0004] The purpose of this section is to summarize some aspects of the embodiments of the present invention and briefly introduce some preferred embodiments. Some simplifications or omissions may be made in this section and the specification abstract and the invention title of the present invention to avoid blurring the purpose of this section, the specification abstract and the invention title, and such simplifications or omissions cannot be used to limit the scope of the present invention.

[0005] Therefore, the object of the present invention is to provide a table tennis serving machine for training, which can solve the problem that the existing serving machines serve in a fixed direction, and when the direction needs to be changed, people have to change it manually, and the randomness is not strong.

[0006] In order to solve the above technical problems, the present invention provides a table tennis training serving machine, which adopts the following technical solution: an adjustment component, which includes a mounting seat, a lifting member is arranged inside the mounting seat, a lifting seat is installed on the top of the lifting member, a rotating member is arranged inside the lifting seat, and a rotating disk is installed on the top of the rotating member;

[0007] A ball serving assembly is arranged on the top of the turntable, and includes a frame, which is installed on the top of the turntable, a vertical plate is installed on the left side of the frame, a ball outlet tube is connected to the right side of the vertical plate, a funnel is connected to the top of the ball outlet tube, a driving member is arranged between the ball outlet tube and the vertical plate, and a limiting member is arranged at the bottom of the ball outlet tube.

[0008] By adopting the above technical scheme, the present scheme can adjust the height of the lifting seat through the lifting member, and then adjust the height of the ball outlet tube. At the same time, the turntable is driven to rotate by the rotating member, and the turntable drives the ball outlet tube to rotate, so as to adjust the angle of the serve. The table tennis balls are stored through the funnel and fall into the ball outlet tube. When the ball needs to be served, the table tennis balls in the ball outlet tube are hit out by the driving member to carry out training.

[0009] Optionally, the lifting member includes a bidirectional screw rod, which is connected to the lower end of the bottom of the inner cavity of the mounting seat through a bearing, and a servo motor for driving the bidirectional screw rod to rotate is installed on the right side of the mounting seat, and both ends of the outer wall of the bidirectional screw rod are threaded with nuts, and the tops of the two groups of nuts are installed with a first connecting block, and the tops of the two groups of the first connecting blocks are hinged with connecting rods, and the ends of the two groups of connecting rods facing away from the first connecting block are hinged with a second connecting block, and the tops of the two groups of the second connecting blocks are fixedly connected to the bottom of the lifting seat.

[0010] By adopting the above technical solution, the servo motor drives the bidirectional lead screw to rotate when working, and the rotation of the bidirectional lead screw drives the two sets of nuts to move and approach each other. When the nut moves, it drives the second connecting block to move upward through the connecting rod, and then it can drive the lifting seat to move upward, and then the height of the upper ball outlet tube can be appropriately adjusted through the lifting seat, so that the ball serving machine is suitable for trainees of different heights.

[0011] Optionally, a sliding member is arranged between the lifting seat and the mounting seat, and the sliding member includes two groups of connecting seats, the two groups of connecting seats are respectively installed on both sides of the lifting seat, and the ends of the two groups of connecting seats facing away from the lifting seat are connected to sliding blocks, and both sides of the inner cavity of the mounting seat are provided with sliding grooves that slidably cooperate with the sliding blocks.

[0012] By adopting the above technical solution, when the lifting seat moves up and down, the connecting seat can drive the slider to slide in the sliding groove, so that the lifting seat can be limited to prevent the lifting seat from rotating.

[0013] Optionally, the rotating member includes a driving motor, which is mounted on the inner bottom wall of the lifting seat, a driving shaft is mounted on the power output end of the driving motor, a driving gear is mounted on the top of the driving shaft, one side of the driving gear is meshedly connected with a driven gear, the inside of the driven gear is sleeved with a driven shaft, the top of the driven shaft extends out of the lifting seat and is fixedly connected to the bottom of the turntable, and the bottom of the driven shaft is connected to the inner bottom wall of the lifting seat through a bearing.

[0014] By adopting the above technical solution, when the driving motor is working, the driving shaft drives the driving gear to rotate, the driving gear drives the driven gear to rotate, the driven gear drives the driven shaft to rotate, and then the turntable can be driven to rotate, which is convenient for driving the ball outlet tube to rotate, and then the angle of the serve can be adjusted.

[0015] Optionally, a slide plate is connected to the bottom of the turntable, an annular slide rail is provided on the top of the lifting seat, and the slide plate is slidably connected to the annular slide rail.

[0016] By adopting the above technical solution, the turntable can drive the slide plate to slide in the annular slide rail when it rotates, so that the turntable is more stable during the rotation process.

[0017] Optionally, a groove is provided at the bottom of the inner cavity of the ball outlet tube.

[0018] By adopting the above technical solution, the table tennis ball can fall into the groove when falling from the funnel, so that the table tennis ball can be initially limited.

[0019] Optionally, the driving member includes a sliding rod, which is inserted into the vertical plate, the right side of the sliding rod extends into the interior of the lifting seat and is installed with a push block, the outer wall of the sliding rod is sleeved with a positioning spring, and the positioning spring is located between the positioning spring and the vertical plate, a tooth plate is installed at the end of the sliding rod away from the push block, a connecting plate is installed at the top of the left side of the vertical plate, a support plate is installed at the bottom of the connecting plate, a stepping motor is installed on one side of the support plate, and a half gear is installed at the power output end of the stepping motor, and the half gear is meshed with the tooth plate.

[0020] By adopting the above technical solution, the stepper motor is turned on, and the stepper motor drives the half gear to rotate clockwise. The rotation of the half gear drives the toothed plate to move to the left. The toothed plate drives the push block to move to the left through the slide rod and compresses the positioning spring to produce deformation. When the half gear rotates to a certain position, the half gear is disengaged from the toothed plate, and then the positioning spring can use the deformation force to make the slide rod and the push block move horizontally to the right. The impact force generated by the push block can knock the table tennis ball out of the ball outlet tube.

[0021] Optionally, the limiting member includes a guide rod, which is installed at the bottom of the tooth plate, the right end of the guide rod passes through the vertical plate and is installed with a wedge block, the frame is provided with a T-shaped movable rod, the top of the T-shaped movable rod is installed with a support rod, the outer wall of the T-shaped movable rod is provided with a reset spring, and the reset spring is located between the support rod and the frame, the top of the support rod is connected to the limiting block, the bottom of the ball outlet tube is provided with a through hole matching the limiting block, and the end of the limiting block close to the wedge block is connected to a roller.

[0022] By adopting the above technical solution, when the guide rod moves to the right, it drives the wedge block to move to the right. The wedge block will press the roller downward, thereby causing the support rod to move downward. The support rod drives the limit block and the T-shaped movable rod to move downward, and the reset spring is compressed, so that before the push block contacts the ping-pong ball, the limit block no longer blocks the ping-pong ball, thereby preventing the ping-pong ball from moving after falling into the ball outlet tube and affecting the delivery of the ping-pong ball. The function of the limit block is to limit the ping-pong ball that falls into the ball outlet tube to below the funnel, thereby preventing the ping-pong ball from slipping out of the ball outlet tube.

[0023] In summary, the present invention includes at least one of the following beneficial effects:

[0024] Through the coordinated arrangement of the lifting seat, the rotating part and the turntable, the serving direction can be automatically changed, and the direction of the table tennis ball sent out by the ball outlet tube can be constantly changed, thereby improving people's reaction ability and adaptability, which is beneficial to improving the training level.

[0025] By coordinating the mounting seat and the lifting member, the height of the lifting seat can be easily adjusted, and the height of the ball outlet tube can be appropriately adjusted, so that the device can meet the requirements of trainees of different heights, thereby improving the universality of the ball serving machine.

[0026] By setting the limiting piece, the position of the table tennis ball can be conveniently limited to prevent the table tennis ball from moving after falling into the ball outlet tube and affecting the delivery of the table tennis ball. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0028] Figure 1 It is a cross-sectional structural schematic diagram of the present invention;

[0029] Figure 2 For the present invention Figure 1 Schematic diagram of the structure at A in the middle;

[0030] Figure 3 For the present invention Figure 1 Schematic diagram of the structure at B in the middle;

[0031] Figure 4 It is a front view structural schematic diagram of the present invention.

[0032] In the figure:

[0033] 1. Adjustment assembly; 101. Mounting seat; 102. Lifting member; 1021. Bidirectional screw rod; 1022. Servo motor; 1023. Screw nut; 1024. First connecting block; 1025. Connecting rod; 1026. Second connecting block; 103. Lifting seat; 1031. Annular slide rail; 104. Sliding member; 1041. Connecting seat; 1042. Sliding block; 1043. Sliding groove; 105. Rotating member; 1051. Driving motor; 1052. Driving shaft; 1053. Driving gear; 1054. Driven gear; 1055. Driven shaft; 106. Turntable; 1061. Slide plate;

[0034] 2. Ball serving assembly; 201. Frame; 202. Vertical plate; 203. Ball outlet tube; 2031. Groove; 204. Funnel; 205. Driving member; 2051. Sliding rod; 2052. Pushing block; 2053. Positioning spring; 2054. Tooth plate; 2055. Connecting plate; 2056. Support plate; 2057. Stepping motor; 2058. Half gear; 206. Limiting member; 2061. Guide rod; 2062. Wedge block; 2063. T-shaped movable rod; 2064. Support rod; 2065. Return spring; 2066. Limiting block; 2067. Roller. DETAILED DESCRIPTION

[0035] The following is combined with Figure 1-4 The present invention is described in further detail.

[0036] Embodiment 1, refer to Figure 1 In order to solve the problem that the existing ball serving machine serves in a fixed direction and people have to change the direction manually when the direction needs to be changed, and the randomness is not strong, the present invention discloses a table tennis training ball serving machine including an adjustment component 1, which includes a mounting seat 101, a lifting member 102 is arranged inside the mounting seat 101, a lifting seat 103 is installed on the top of the lifting member 102, a rotating member 105 is arranged inside the lifting seat 103, and a turntable 106 is installed on the top of the rotating member 105.

[0037] The ball serving assembly 2 is arranged on the top of the turntable 106, and includes a frame 201, the frame 201 is installed on the top of the turntable 106, a vertical plate 202 is installed on the left side of the frame 201, a ball outlet tube 203 is connected to the right side of the vertical plate 202, a funnel 204 is connected to the top of the ball outlet tube 203, a driving member 205 is arranged between the ball outlet tube 203 and the vertical plate 202, and a limiting member 206 is arranged at the bottom of the ball outlet tube 203.

[0038] Reference Figure 1 and Figure 2 The rotating member 105 includes a driving motor 1051, which is installed on the inner bottom wall of the lifting seat 103. A driving shaft 1052 is fixedly installed on the power output end of the driving motor 1051, and a driving gear 1053 is fixedly installed on the top of the driving shaft 1052. A driven gear 1054 is meshed and connected to one side of the driving gear 1053. A driven shaft 1055 is fixedly sleeved inside the driven gear 1054. The top of the driven shaft 1055 extends out of the lifting seat 103 and is fixedly connected to the bottom of the turntable 106. The bottom of the driven shaft 1055 is rotatably connected to the inner bottom wall of the lifting seat 103 through a bearing.

[0039] Reference Figure 1 and Figure 2 The bottom of the turntable 106 is fixedly connected with a slide plate 1061, and the top of the lifting seat 103 is provided with an annular slide rail 1031, and the slide plate 1061 is slidably connected with the annular slide rail 1031. When the turntable 106 rotates, it can drive the slide plate 1061 to slide in the annular slide rail 1031, so that the turntable 106 is more stable during the rotation process.

[0040] Reference Figure 1 and Figure 4 The driving member 205 includes a slide bar 2051, which is slidably arranged on the vertical plate 202. The right side of the slide bar 2051 extends into the interior of the lifting seat 103 and is installed with a push block 2052. The outer wall of the slide bar 2051 is sleeved with a positioning spring 2053, and the positioning spring 2053 is located between the positioning spring 2053 and the vertical plate 202. A tooth plate 2054 is fixedly installed at one end of the slide bar 2051 away from the push block 2052. A connecting plate 2055 is horizontally installed on the top of the left side of the vertical plate 202, and a supporting plate 2056 is vertically installed on the bottom of the connecting plate 2055. A stepping motor 2057 is installed on one side of the support plate 2056. A half gear 2058 is installed at the power output end of the stepping motor 2057, and the half gear 2058 is meshed and connected with the tooth plate 2054.

[0041] Specific implementation principle: when training is needed, the ping-pong ball is stored in the funnel 204, and the ping-pong ball falls into the ball outlet tube 203. At this time, the stepper motor 2057 is turned on, and the stepper motor 2057 drives the half gear 2058 to rotate clockwise. Since the teeth on the half gear 2058 are meshed with the tooth plate 2054, the half gear 2058 rotates to drive the tooth plate 2054 to move left. The tooth plate 2054 drives the push block 2052 to move left through the slide bar 2051 and compresses the positioning spring 2053 to produce deformation. When the half gear 2058 rotates to a certain position, the half gear 2058 is disengaged from the tooth plate 2054, and the positioning spring 2053 can be deformed. The force causes the slide bar 2051 and the push block 2052 to move horizontally to the right, and the impact force generated by the push block 2052 can knock the table tennis ball in the ball outlet tube 203 out for training. When the serving angle of the ball outlet tube 203 needs to be adjusted, the drive motor 1051 is started. When the drive motor 1051 is working, it drives the driving gear 1053 to rotate through the driving shaft 1052. The driving gear 1053 rotates to drive the driven gear 1054 to rotate. The driven gear 1054 rotates to drive the driven shaft 1055 to rotate, which can drive the turntable 106 to rotate. The turntable 106 rotates to drive the ball outlet tube 203 to rotate through the frame 201 and the vertical plate 202, so as to facilitate the adjustment of the serving angle.

[0042] Example 2, refer to Figure 1 In this embodiment, based on the same concept as the above-mentioned embodiment 1, the table tennis training serving machine also includes that the lifting member 102 includes a bidirectional screw rod 1021, and the bidirectional screw rod 1021 is connected to the lower end of the bottom of the inner cavity of the mounting seat 101 through a bearing. A servo motor 1022 for driving the bidirectional screw rod 1021 to rotate is installed on the right side of the mounting seat 101. Both ends of the outer wall of the bidirectional screw rod 1021 are threadedly connected with screw nuts 1023, and the tops of the two groups of screw nuts 1023 are respectively installed with first connecting blocks 1024, and the tops of the two groups of first connecting blocks 1024 are respectively hinged with connecting rods 1025, and the ends of the two groups of connecting rods 1025 away from the first connecting block 1024 are respectively hinged with second connecting blocks 1026, and the tops of the two groups of second connecting blocks 1026 are fixedly connected to the bottom of the lifting seat 103.

[0043] Reference Figure 1A sliding member 104 is provided between the lifting seat 103 and the mounting seat 101. The sliding member 104 includes two groups of connecting seats 1041, which are respectively installed on both sides of the lifting seat 103. The ends of the two groups of connecting seats 1041 away from the lifting seat 103 are connected to sliders 1042. Both sides of the inner cavity of the mounting seat 101 are provided with sliding grooves 1043 that are slidably matched with the sliders 1042. When the lifting seat 103 moves up and down, the connecting seat 1041 can drive the sliders 1042 to slide in the sliding grooves 1043, so that the lifting seat 103 can be limited to prevent the lifting seat 103 from rotating.

[0044] Specific implementation principle: when it is necessary to adjust the height of the ball outlet tube 203, start the servo motor 1022. When the servo motor 1022 is working, it drives the bidirectional screw rod 1021 to rotate. The bidirectional screw rod 1021 rotates to drive the two sets of screw nuts 1023 to move and approach each other. When the screw nuts 1023 move, they drive the second connecting block 1026 to move upward through the connecting rod 1025, and then they can drive the lifting seat 103 to move upward. The lifting seat 103 moves upward and drives the ball outlet tube 203 to move upward through the frame 201 and the vertical plate 202, so that the height of the ball outlet tube 203 can be appropriately adjusted, so that the ball serving machine is suitable for trainers of different heights, thereby improving the universality of the ball serving machine.

[0045] Example 3, refer to Figure 1 and Figure 3 In this embodiment, based on the same concept as the first embodiment, the table tennis training serving machine further includes a groove 2031 at the bottom of the inner cavity of the ball outlet tube 203. When the table tennis ball falls from the funnel 204, it can fall into the groove 2031, thereby preliminarily limiting the position of the table tennis ball.

[0046] Reference Figure 1 and Figure 3 The limit member 206 includes a guide rod 2061, which is installed at the bottom of the tooth plate 2054. The right end of the guide rod 2061 passes through the vertical plate 202 and is installed with a wedge block 2062. A T-shaped movable rod 2063 is passed through the frame 201, and a support rod 2064 is installed on the top of the T-shaped movable rod 2063. The outer wall of the T-shaped movable rod 2063 is sleeved with a return spring 2065, and the return spring 2065 is located between the support rod 2064 and the frame 201. The top of the support rod 2064 is connected to the limit block 2066, and the bottom of the ball outlet tube 203 is provided with a through hole matching the limit block 2066. The limit block 2066 is rotatably connected to a roller 2067 at one end close to the wedge block 2062.

[0047] Specific implementation principle: when the ping-pong ball falls from the funnel 204, it can fall into the groove 2031, so that the ping-pong ball can be initially limited. When the tooth plate 2054 moves to the right, the guide rod 2061 drives the wedge block 2062 to move to the right. When the wedge block 2062 moves to the right, it presses the roller 2067 downward, thereby causing the support rod 2064 to move downward. The support rod 2064 drives the limit block 2066 and the T-shaped movable rod 2063 to move downward, and the return spring 2065 is compressed and deformed, thereby causing the limit block 2066 to no longer block the ping-pong ball before the push block 2052 contacts the ping-pong ball, preventing the ping-pong ball from moving after falling into the ball outlet tube 203 and affecting the delivery of the ping-pong ball. The function of the limit block 2066 is to limit the ping-pong ball that falls into the ball outlet tube 203 to the bottom of the funnel 204, thereby preventing the ping-pong ball from slipping out of the ball outlet tube 203.

[0048] The above are all preferred embodiments of the present invention, and are not intended to limit the protection scope of the present invention. Therefore, any equivalent changes made based on the structure, shape, and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A table tennis training ball machine, Features: include, An adjustment assembly (1) comprises a mounting seat (101), a lifting member (102) is arranged inside the mounting seat (101), a lifting seat (103) is installed on the top of the lifting member (102), a rotating member (105) is arranged inside the lifting seat (103), and a rotating disk (106) is installed on the top of the rotating member (105); A ball serving assembly (2) is arranged on the top of a turntable (106), and comprises a frame (201). The frame (201) is installed on the top of the turntable (106). A vertical plate (202) is installed on the left side of the frame (201). A ball outlet pipe (203) is connected to the right side of the vertical plate (202). A funnel (204) is connected to the top of the ball outlet pipe (203). A driving member (205) is arranged between the ball outlet pipe (203) and the vertical plate (202). A limiting member (206) is arranged at the bottom of the ball outlet pipe (203).

2. A table tennis training serving machine according to claim 1, Features: The lifting member (102) comprises a bidirectional screw rod (1021), the bidirectional screw rod (1021) being connected to the lower end of the bottom of the inner cavity of the mounting seat (101) through a bearing, a servo motor (1022) for driving the bidirectional screw rod (1021) to rotate is installed on the right side of the mounting seat (101), both ends of the outer wall of the bidirectional screw rod (1021) are threadedly connected with screw nuts (1023), the tops of the two groups of screw nuts (1023) are both installed with first connecting blocks (1024), the tops of the two groups of the first connecting blocks (1024) are both hinged with connecting rods (1025), the ends of the two groups of the connecting rods (1025) facing away from the first connecting block (1024) are both hinged with second connecting blocks (1026), and the tops of the two groups of the second connecting blocks (1026) are fixedly connected to the bottom of the lifting seat (103).

3. A table tennis training serving machine according to claim 1, Features: A sliding member (104) is arranged between the lifting seat (103) and the mounting seat (101), and the sliding member (104) includes two groups of connecting seats (1041). The two groups of connecting seats (1041) are respectively installed on both sides of the lifting seat (103), and the ends of the two groups of connecting seats (1041) facing away from the lifting seat (103) are connected to sliding blocks (1042), and sliding grooves (1043) that slidably cooperate with the sliding blocks (1042) are provided on both sides of the inner cavity of the mounting seat (101).

4. A table tennis training serving machine according to claim 1, Features: The rotating member (105) comprises a driving motor (1051), wherein the driving motor (1051) is mounted on the inner bottom wall of the lifting seat (103), a driving shaft (1052) is mounted on the power output end of the driving motor (1051), a driving gear (1053) is mounted on the top of the driving shaft (1052), one side of the driving gear (1053) is meshingly connected with a driven gear (1054), the interior of the driven gear (1054) is sleeved with a driven shaft (1055), the top of the driven shaft (1055) extends out of the lifting seat (103) and is fixedly connected to the bottom of the turntable (106), and the bottom of the driven shaft (1055) is connected to the inner bottom wall of the lifting seat (103) through a bearing.

5. A table tennis training serving machine according to claim 1, Features: The bottom of the rotating disk (106) is connected with a slide plate (1061), the top of the lifting seat (103) is provided with an annular slide rail (1031), and the slide plate (1061) is slidably connected with the annular slide rail (1031).

6. A table tennis training serving machine according to claim 1, Features: A groove (2031) is formed at the bottom of the inner cavity of the ball outlet tube (203).

7. A table tennis training serving machine according to claim 1, Features: The driving member (205) comprises a slide bar (2051), the slide bar (2051) is inserted into the vertical plate (202), the right side of the slide bar (2051) extends into the interior of the lifting seat (103) and is provided with a push block (2052), the outer wall of the slide bar (2051) is provided with a positioning spring (2053), and the positioning spring (2053) is located between the positioning spring (2053) and the vertical plate (202), and the slide bar (2051) is away from the push block ( A toothed plate (2054) is installed at one end of the vertical plate (2052), a connecting plate (2055) is installed at the top of the left side of the vertical plate (202), a supporting plate (2056) is installed at the bottom of the connecting plate (2055), a stepping motor (2057) is installed on one side of the supporting plate (2056), a half gear (2058) is installed at the power output end of the stepping motor (2057), and the half gear (2058) is meshedly connected with the toothed plate (2054).

8. A table tennis training serving machine according to claim 7, Features: The limiting member (206) comprises a guide rod (2061), the guide rod (2061) is installed at the bottom of the tooth plate (2054), the right end of the guide rod (2061) passes through the vertical plate (202) and is installed with a wedge block (2062), the frame (201) is provided with a T-shaped movable rod (2063), the top of the T-shaped movable rod (2063) is installed with a support rod (2064), and the T-shaped movable rod (2063) is provided with a support rod (2064). The outer wall of the support rod (2064) is provided with a reset spring (2065), and the reset spring (2065) is located between the support rod (2064) and the frame (201), the top of the support rod (2064) is connected to a limit block (2066), the bottom of the ball outlet tube (203) is provided with a through hole matching the limit block (2066), and the limit block (2066) is connected to a roller (2067) at one end close to the wedge block (2062).

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