Basketball elasticity testing device and testing method

Abstract

The invention relates to the technical field of ball elasticity detection, in particular to a basketball elasticity testing device and method.The basketball elasticity testing device comprises a testing rack, a testing frame, a feeding mechanism, a circulating mechanism and a control unit, the testing frame is arranged on the testing rack, a testing inlet is formed in the top of the testing frame, and an elasticity detection unit is arranged on the wall face of the testing frame; a first outlet is formed in the left side of the bottom of the testing frame, a second outlet is formed in the front side of the bottom of the testing frame, a sorting unit is further arranged on the second outlet, the feeding mechanism is arranged on the right side of the testing frame and comprises a conveying unit and a clamping unit, and the circulating mechanism is arranged on the first outlet and comprises a sliding way, a containing frame, a label recognizer, a stirring unit and a moving unit. The testing frame, the feeding mechanism and the circulating mechanism are all in circuit connection with the control unit. According to the invention, the same basketball can be circularly detected for multiple times, so that the elasticity data of different positions of the basketball are obtained, and the elasticity uniformity of the basketball is effectively judged.

Description

Technical Field

[0001] This invention relates to the field of ball elasticity testing technology, specifically providing a basketball elasticity testing device and testing method. Background Technology

[0002] Basketballs undergo a bounce test after production but before leaving the factory to prevent substandard basketballs with insufficient bounce from entering the market. However, current bounce testing equipment can only test a single basketball, and the tester must hold the basketball and place it at the testing position. After the test is completed, the next basketball to be tested must be held and placed at the testing position. This makes the basketball bounce testing process discontinuous, cumbersome, and inefficient.

[0003] Chinese Patent No. CN118837053B discloses a basketball elasticity testing device, including a testing base. A stand is fixedly installed on the upper side edge of the testing base. A distance sensor is fixedly installed at the end of the stand. A ball-hitting component is installed inside the stand. A limiting frame is connected to the side of the stand. A bracket is fixedly installed on the lower side edge of the limiting frame. A ball-pushing component is provided at the front end of the bracket. A ball-pushing seat is fixedly installed at the end of the ball-pushing component. A through hole is provided on one side of the limiting frame. The ball-pushing seat is aligned with the through hole. A ball-holding component is provided below the limiting frame on the side of the stand.

[0004] However, the aforementioned basketball elasticity testing device judges whether the basketball's elasticity is up to standard by detecting the rebound height of the basketball under a specific impact force and a specific height, or by measuring a single impact force. It cannot perform multiple or cyclic tests on the same basketball, making it difficult to test the elasticity data at different locations on the basketball. Consequently, it cannot comprehensively reflect the elasticity performance of various parts of the basketball, making it impossible to effectively judge the uniformity of the basketball's elasticity, which in turn affects the stability of the basketball's trajectory when the player dribbles. Summary of the Invention

[0005] This invention provides a basketball elasticity testing device and method to solve the technical problem in the prior art that it is impossible to perform multiple, cyclic tests on the same basketball, and it is impossible to test the elasticity data of different positions of the basketball, which leads to the inability to effectively judge the uniformity of the basketball's elasticity.

[0006] In a first aspect, the present invention provides a basketball elasticity testing device, comprising: a testing frame; A test frame is provided on the test rack. The test frame has a test inlet at the top and an elasticity detection unit installed on the wall. The test frame has a first outlet on the bottom left and a second outlet on the bottom front. The test frame has a first push plate and a second push plate on the bottom right and bottom rear, respectively, for pushing the basketball to be tested to the first outlet and the second outlet. Both the first outlet and the second outlet have a sliding door. The second outlet also has a sorting unit for sorting and outputting qualified and unqualified basketballs. The feeding mechanism, located on the right side of the test frame, includes a conveying unit and a clamping unit. One end of the conveying unit is located on the test frame, and the other end is installed outside the test frame, for conveying the basketball to be tested to the test frame. The clamping unit is located on the top of the test frame, for marking, clamping, and placing the basketball to be tested on the conveying unit into the test inlet in sequence. A circulation mechanism, located at the first outlet, includes a slide, a placement rack, a label reader, a toggle unit, and a moving unit. The slide is located at the first outlet, the placement rack is located to the left of the slide, the label reader is located directly below the placement rack, and the label reader has at least two toggle units circumferentially arranged for rotating the basketball to be tested on the placement rack. The moving unit is located on one side of the placement rack for throwing the rotated basketball into the test inlet. The control unit, the test frame, the feeding mechanism and the circulation mechanism are all connected to the control unit circuit.

[0007] Preferably, four actuation units are provided, and the four actuation units are evenly distributed around the outer perimeter of the tag identifier. Each actuation unit includes an actuation support, a drive motor, and a rotating wheel. The actuation support is mounted on the test frame, the rotating wheel is located on the upper part of the actuation support, and the drive motor is located on the lower part of the actuation support for driving the rotating wheel to rotate. The rotation axes of the rotating wheels in two adjacent actuation units are perpendicular to each other in the horizontal direction.

[0008] Preferably, the circulation mechanism further includes a limiting unit, with two limiting units symmetrically arranged on the front and rear sides of the placement frame, respectively, for limiting and fixing the basketball to be tested. The limiting unit includes a limiting support, a limiting plate, and a first telescopic rod. The limiting support is installed on the test frame, and the limiting plate and the first telescopic rod are both located on the limiting support. The first telescopic rod can drive the limiting plate to extend and retract toward the center of the placement frame. The limiting plate is set as an arc-shaped plate, and a first ball groove is formed on the contact surface between the arc-shaped plate and the basketball to be tested. A plurality of first balls are installed in the first ball groove.

[0009] Preferably, the placement frame is configured as a semi-circular ring structure, and the inner side of the placement frame is provided with a second ball groove, in which a plurality of second balls are installed.

[0010] Preferably, the clamping unit includes a fixed frame, a first lead screw, a second telescopic rod, a movable frame, a second lead screw, a third lead screw, a first lead nut, and a second lead nut; The fixed frame is installed on the top of the test frame, the first lead screw is horizontally installed on the fixed frame, the upper end of the second telescopic rod is threaded to the first lead screw through a connecting block, and the lower end of the second telescopic rod is connected to the top of the movable frame. The bottom of the movable frame is provided with an installation groove. The second lead screw and the third lead screw are arranged in the same direction of rotation and parallel to each other in the installation groove. The ends of the second lead screw and the third lead screw are respectively provided with a first gear and a second gear, which mesh with each other. One end of the second lead screw is provided with a first motor. A first nut and a second nut are respectively installed on the second lead screw and the third lead screw. A gripping disc is installed at the bottom of the first nut and the second nut. The two gripping discs are arranged opposite each other, and each gripping disc is provided with a second motor. The second motor can drive the gripping disc to rotate. A first marker is provided in the middle of each gripping disc. A second marker is also installed at the bottom of the installation groove.

[0011] Preferably, the rotation axes of the two gripping discs coincide with each other, and the rotation axes coincide with the horizontal center axis of the basketball to be tested, and the second marker is located directly above the basketball to be tested.

[0012] Preferably, the conveying unit includes a conveyor belt, a negative pressure suction plate, and a support base. One end of the conveyor belt extends into the test frame and is installed at the bottom of the test frame, while the other end is installed outside the test frame. The negative pressure suction plate has a hollow structure and passes through the conveyor belt. It has multiple exhaust ports on its top surface and multiple exhaust pipes on one side of the negative pressure suction plate. All of the exhaust pipes are connected to an external air pump. A support base is provided on the conveyor belt directly above each exhaust port. The top surface of the support base is concave and has a first through hole communicating with the exhaust port. A second through hole is correspondingly provided on the conveyor belt below the first through hole.

[0013] Preferably, the moving unit includes a mounting base, a fourth lead screw, a third telescopic rod, and a vacuum suction cup. The mounting base is disposed on the test frame, the fourth lead screw is vertically disposed on the mounting base, one end of the third telescopic rod is threadedly connected to the fourth lead screw through a moving block, and the other end is fixedly connected to the top of the vacuum suction cup. The vacuum suction cup is used to adsorb the basketball to be tested.

[0014] Preferably, the sorting unit includes a sorting chute, a partition baffle, and a rotating plate. The inlet of the sorting chute is connected to the second outlet. The partition baffle is located at the lower part of the sorting chute and is used to divide the sorting chute into two branch chutes. The rotating plate is rotatably connected to the top of the partition baffle. A third motor for driving the rotating plate to rotate is provided at the bottom of the sorting chute.

[0015] Secondly, the present invention also provides a method for testing the elasticity of a basketball, comprising the following steps: S1: The control delivery unit delivers the basketball to be tested to the area directly below the gripping unit; S2: Establish a spatial rectangular coordinate system with the center of the basketball to be tested as the center, and mark the six intersection points of the basketball to be tested with the X-axis, Y-axis and Z-axis; S3: The basketball to be tested is transported to the top of the test frame through the clamping unit. At this time, one intersection point of the basketball to be tested is located directly below the basketball to be tested. The clamping unit is controlled to release, allowing the basketball to fall freely into the test frame under the action of gravity for testing, and the elastic deformation at the intersection point of the basketball to be tested is obtained. S4: Open the movable door at the first exit, so that the first push plate pushes the basketball to be tested onto the placement rack. The label reader scans the surface of the basketball on the placement rack and rotates the basketball to be tested by the toggle unit so that the untested intersection point on the basketball to be tested is located at the center directly above the label reader. S5: Control the moving unit to move the basketball to be tested to the top of the test frame, and let the basketball fall freely into the test frame under the action of gravity to conduct the test, and obtain the elastic deformation of the untested intersection point of the basketball to be tested. S6: Repeat steps S4-S5 until the test is completed at the six intersection points, obtain the elastic deformation of the basketball to be tested at the six points, close the moving door of the first exit, and then open the moving door of the second exit to sort and collect the test basketball.

[0016] This invention provides a basketball elasticity testing device. Through the coordinated operation of a feeding mechanism, a testing frame, a circulation mechanism, and a control unit, it can perform elasticity testing on multiple points of the basketball under test, measuring the elastic deformation at different locations. This comprehensively reflects the elasticity performance of various parts of the basketball and effectively determines the uniformity of the basketball's elasticity. In specific testing, the conveying unit first sequentially transports the basketballs under test to the testing frame. Then, the clamping unit marks, clamps, and places the basketballs from the conveying unit into the testing inlet. The testing frame then performs elasticity testing on the basketballs. The circulation mechanism repeatedly rotates the basketballs under test and places them back into the testing frame, thus completing the multi-point elasticity test. Finally, the sorting unit separates uniform and non-uniform basketballs, eliminating the need for picking up and classifying the balls and not affecting the continuous testing of the next basketball, further improving the efficiency of basketball testing and recovery.

[0017] Additional aspects and advantages of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in this invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this invention. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0019] Figure 1 This is a first three-dimensional structural diagram of the basketball elasticity testing device provided by the present invention; Figure 2 This is a second three-dimensional structural diagram of the basketball elasticity testing device provided by the present invention; Figure 3 This is a front view of the basketball elasticity testing device provided by the present invention; Figure 4 This is a right-side view of the basketball elasticity testing device provided by the present invention; Figure 5 This is a rear view of the basketball elasticity testing device provided by the present invention; Figure 6 This invention provides a diagram showing the ball ejection state at the first outlet of the test frame in a basketball elasticity testing device. Figure 7 This invention provides a diagram showing the ball ejection state of the second outlet of the test frame in a basketball elasticity testing device. Figure 8 This is a schematic diagram of the installation position of the slider nut in the test frame of the basketball elasticity testing device provided by the present invention; Figure 9This is a schematic diagram of the installation position of the electric screw in the test frame of the basketball elasticity testing device provided by the present invention; Figure 10 This is a schematic diagram of the conveying unit in the basketball elasticity testing device provided by the present invention; Figure 11 This is a schematic diagram of the negative pressure suction plate structure of the conveying unit in the basketball elasticity testing device provided by the present invention; Figure 12 This is a schematic diagram of the gripping unit in the basketball elasticity testing device provided by the present invention; Figure 13 This is a bottom view of the clamping unit in the basketball elasticity testing device provided by the present invention; Figure 14 This is a schematic diagram of the circulation mechanism in the basketball elasticity testing device provided by the present invention (the moving unit is not shown in the figure); Figure 15 This is a top view of the circulation mechanism in the basketball elasticity testing device provided by the present invention (the moving unit is not shown in the figure). Figure 16 This is a diagram showing the installation position of the elasticity detection unit in the basketball elasticity testing device provided by the present invention (the left wall of the test frame is not shown). Figure 17 This invention provides a point diagram showing the location of the six intersecting points of the basketball to be tested in the basketball elasticity testing device. Figure 18 This is a schematic diagram of the overall structure of Embodiment 2 of the present invention; Figure 19 This is a schematic diagram of the overall structure of Embodiment 3 of the present invention.

[0020] Figure label: 1. Test frame; 2. Test frame; 21. Test inlet; 22. Elasticity detection unit; 23. First outlet; 24. Second outlet; 25. Sliding door; 26. Electric screw; 27. Sliding nut; 28. First push plate; 281. Deflection plate; 282. Torsion spring; 283. Fixed push plate; 29. ​​Second push plate; 3. Feeding mechanism; 31. Conveying unit; 311. Conveyor belt; 312. Negative pressure suction plate; 313. Support base; 314. Exhaust port; 315. Exhaust pipe opening; 317. First through hole; 32. Clamping unit; 321. Fixed frame; 322. First lead screw; 323. Second telescopic rod; 324. Movable frame; 325. Second lead screw; 326. Third lead screw; 327. First nut; 328. 329. Second screw nut; 331. Clamping plate; 332. First marker; 333. Second marker; 334. First motor; 335. Second motor; 4. Circulation mechanism; 41. Slide rail; 42. Placement rack; 421. Second ball bearing; 43. Tag reader; 44. Actuating unit; 441. Actuating support; 442. Rotating wheel; 45. Limiting unit; 451. Limiting support; 452. Limiting plate; 453. First telescopic rod; 454. First ball bearing; 46. Moving unit; 461. Mounting base; 462. Fourth screw; 463. Third telescopic rod; 464. Vacuum suction cup; 5. Control box; 6. Sorting unit; 61. Sorting slide rail; 62. Separating baffle; 63. Rotating plate; 64. Third motor; 7. Guide plate. Detailed Implementation

[0021] To make the objectives, technical solutions, and advantages of this invention clearer, the technical solutions of this invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this invention. All other embodiments obtained by those skilled in the art based on the embodiments of this invention without creative effort are within the scope of protection of this invention.

[0022] In the description of the embodiments of the present invention, it should be noted that the terms "upper," "lower," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing the embodiments of the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the embodiments of the present invention. In addition, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0023] In the description of the embodiments of the present invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "connected" and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in the embodiments of the present invention based on the specific circumstances.

[0024] In embodiments of the present invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0025] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0026] Example 1: The following is combined with Figures 1 to 17 The illustrated embodiments describe the technical solution of the present invention: This invention provides a basketball elasticity testing device, such as... Figures 1 to 5 As shown, It includes a test rack 1, a test frame 2, a feeding mechanism 3, a circulation mechanism 44, and a control unit. The control unit is located inside the control box 5, and the test rack 1 is located on the control box 5. Test frame 2 is mounted on test rack 1. Test frame 2 has a test inlet 21 at its top, and an elasticity detection unit 22 installed on its wall. A first outlet 23 is located on the left side of the bottom of test frame 2, and a second outlet 24 is located on the front side of the bottom of test frame 2. A first push plate 28 and a second push plate 29 are located on the right and rear sides of the bottom of test frame 2, respectively, for pushing the basketball to be tested to the first outlet 23 and the second outlet 24. Both the first outlet 23 and the second outlet 24 are equipped with sliding doors 25. A sorting unit 6 is also located on the second outlet 24, used to sort and output qualified and unqualified basketballs. Figure 6 and Figure 7 As shown, in order to ensure the stability and reliability of the ball output from test box 2, when the ball is output from the first exit 23 of test box 2, the movable door 25 at the first exit 23 opens, and the movable door 25 at the second exit 24 closes; when the ball is output from the second exit 24 of test box 2, the movable door 25 at the second exit 24 opens, and the movable door 25 at the first exit 23 closes.

[0027] The feeding mechanism 3 is located on the right side of the test frame 2, and includes a conveying unit 31 and a clamping unit 32. One end of the conveying unit 31 is located on the test frame 1, and the other end is installed outside the test frame 1, for conveying the basketball to be tested to the test frame 1; the clamping unit 32 is located on the top of the test frame 1, for marking, clamping and placing the basketball to be tested on the conveying unit 31 into the test inlet 21 in sequence. The circulation mechanism 4 is located at the first outlet 23 and includes a slide 41, a placement rack 42, a label reader 43, a toggle unit 44, and a moving unit 46. The slide 41 is located at the first outlet 23, the placement rack 42 is located to the left of the slide 41, the label reader 43 is located directly below the placement rack 42, and the label reader 43 is provided with four toggle units 44 around its circumference for rotating the basketball to be tested on the placement rack 42. The moving unit 46 is located on one side of the placement rack 42 for throwing the rotated basketball into the test inlet 21. Test box 2, feeding mechanism 3 and circulation mechanism 4 are all connected to the control unit circuit.

[0028] In this embodiment, as Figure 17 As shown, a spatial rectangular coordinate system is established with the center of the basketball to be tested as the center, and the elasticity test is performed at the six intersection points X1, X2, Y1, Y2, Z1 and Z2 of the basketball to be tested with the X-axis, Y-axis and Z-axis.

[0029] In this embodiment, both the first push plate 28 and the second push plate 29 are disc push plates; such as Figure 8 and Figure 9 As shown, electric screws 26 are provided on both sides of the sliding door 25, and slider nuts 27 are provided on both sides of the top of the sliding door 25. One end of the slider nut 27 is fixed to the sliding door 25, and the other end is installed on the electric screws 26.

[0030] In this embodiment, as Figure 10 and Figure 11 As shown, the conveying unit 31 includes a conveyor belt 311, a negative pressure suction plate 312, and a support base 313. One end of the conveyor belt 311 extends into the test frame 1 and is installed at the bottom of the test frame 1, while the other end is installed outside the test frame 1. It is used to convey the basketball to be tested into the test frame 1. The negative pressure suction plate 312 passes through the conveyor belt 311. The negative pressure suction plate 312 is designed as a cavity structure, and multiple exhaust ports 314 are evenly provided on its top surface. Two exhaust pipes 315 are also provided on one side of the negative pressure suction plate 312. Both exhaust pipes 315 are connected to an external air pump. A support base 313 is provided on the conveyor belt 311 directly above each exhaust port 314. The top surface of the support base 313 is concave and has a first through hole 317 communicating with the exhaust port 314. A second through hole is correspondingly provided on the conveyor belt 311 below the first through hole 317. After the produced basketball to be tested is stably transported to one side of the test frame 2 by the conveyor belt 311, the conveyor belt 311 stops running.

[0031] In this embodiment, as Figure 12 and Figure 13 As shown, the clamping unit 32 includes a fixed frame 321, a first lead screw 322, a second telescopic rod 323, a movable frame 324, a second lead screw 325, a third lead screw 326, a first lead screw nut 327, and a second lead screw nut 328. The fixed frame 321 is installed on the top of the test frame 1. The first lead screw 322 is horizontally installed on the fixed frame 321. The upper end of the second telescopic rod 323 is threadedly connected to the first lead screw 322 through a connecting block. The lower end of the second telescopic rod 323 is connected to the top of the movable frame 324. The bottom of the movable frame 324 has a mounting groove. The second lead screw 325 and the third lead screw 326 are arranged in the same direction and parallel to each other in the mounting groove. The ends of the second lead screw 325 and the third lead screw 326 are respectively provided with a first gear and a second gear, which mesh with each other. One end of the second lead screw 325 is provided with a first motor 333. A first nut 327 and a second nut 328 are respectively installed on the second lead screw 325 and the third lead screw 326. The midpoint of the line connecting the first nut 327 and the second nut 328 is located directly above the basketball to be tested. The first motor 333 can drive the second lead screw 325 to rotate. Through the transmission action of the first gear and the second gear, the third lead screw 326 can rotate. The movement of the first nut 327 and the second nut 328 can cause them to move simultaneously toward each other or in opposite directions, thus clamping or releasing the basketball to be tested. The bottom of the first nut 327 and the second nut 328 are both equipped with a clamping disc 329. The two clamping discs 329 are arranged opposite each other, and each clamping disc 329 is equipped with a second motor 334. The rotation axes of the two clamping discs 329 coincide with each other, and the rotation axes coincide with the horizontal center axis of the basketball to be tested. The second motor 334 can drive the clamping discs 329 to rotate. The center of each clamping disc 329 is equipped with a first marker 331, and the bottom of the mounting slot is also equipped with a second marker 332. The second marker 332 is located directly above the basketball to be tested. The clamping unit 32 first controls the first lead screw 322 to rotate, moving the second telescopic rod 323 horizontally to the basketball to be tested, so that the second marker 332 is directly above the basketball. Then, the extension length of the second telescopic rod 323 is adjusted so that the central axes of the two clamping discs 329 coincide with the X-axis of the basketball to be tested, thereby causing the first marker 331 to mark the intersection points X1 and X2 of the basketball to be tested, and the second marker 332 to mark the intersection point Z1 of the basketball to be tested. Afterwards, the second motor 334 controls the clamping discs 329 to rotate around... The second marker 332 marks the intersection point Y1 of the basketball under test by rotating 90° counterclockwise in the positive X-axis direction. Then, the second motor 334 controls the clamping disk 329 to rotate 90° counterclockwise around the positive X-axis direction, so that the second marker 332 marks the intersection point Z2 of the basketball under test. Finally, the second motor 334 controls the clamping disk 329 to rotate 90° counterclockwise around the positive X-axis direction, so that the second marker 332 marks the intersection point Y2 of the basketball under test, thus achieving the marking of the six intersection points of the basketball under test. After the six intersection points are marked, the two clamping disks 329 are controlled to clamp the basketball, and the horizontal displacement of the basketball under test in the X-axis direction on the test frame 2 is adjusted by adjusting the first lead screw 322. At the same time, the height of the basketball under test in the Z-axis direction on the test frame 2 is adjusted by adjusting the second telescopic rod 323. After stabilizing, the two clamping disks 329 release the basketball under test, allowing the basketball to fall freely under gravity for elasticity testing.

[0032] Furthermore, the clamping disc 329 is a bowl-shaped structure that fits the outer surface of the basketball to be tested. The first marker 331 is located in a groove in the middle of one end of the clamping disc 329, and the second motor 334 is located on the protrusion at the other end of the clamping disc 329. Both the first marker 331 and the second marker 332 use inkjet marking heads. The inkjet marking control system of the inkjet marking head is located in the control box 5 and is connected to the control unit circuit. The inkjet marking head can spray different colors on the six intersecting points of the basketball to be tested. The label recognizer 43 then identifies the colors of the six intersecting points, and the control unit can then determine the test status of the different intersecting points, i.e., the test completed and the test incomplete. After the basketball to be tested is completed, the six marked intersecting points can be wiped off.

[0033] In this embodiment, as Figure 14 and Figure 15 As shown, four actuation units 44 are provided, evenly distributed around the outer perimeter of the label reader 43. Each actuation unit 44 includes an actuation support 441, a drive motor, and a rotating wheel 442. The actuation support 441 is mounted on the test frame 1, the rotating wheel 442 is located on the upper part of the actuation support 441, and the drive motor is located on the lower part of the actuation support 441 to drive the rotating wheel 442 to rotate. The rotation axes of the rotating wheels 442 in two adjacent actuation units 44 are perpendicular to each other in the horizontal direction, and the axial directions of two adjacent rotation axes are parallel to the X-axis and Y-axis directions of the basketball to be tested, respectively. Each rotating wheel 442 has textures to increase friction. Thus, the drive motor drives the rotating wheel 442 to rotate, causing the basketball to be tested on the placement rack 42 to rotate accordingly until the intersection point to be tested is located directly above the center of the label reader 43, at which point the drive motor stops working. The actuation process of the actuation unit 44 is as follows: By controlling the two rotating wheels 442 with the rotation axis in the X-axis direction, the basketball is first rotated 360° around the Y-axis. Then, by controlling the two rotating wheels 442 with the rotation axis in the Y-axis direction, the basketball is first rotated 360° around the X-axis. This will allow you to find the intersection point after the six marks.

[0034] In this embodiment, the circulation mechanism 4 further includes limiting units 45. Two limiting units 45 are symmetrically arranged on the front and rear sides of the placement frame 42, respectively, for limiting and fixing the basketball to be tested. The limiting unit 45 includes a limiting support 451, a limiting plate 452, and a first telescopic rod 453. The limiting support 451 is installed on the test frame 1. The limiting plate 452 and the first telescopic rod 453 are respectively arranged at the front and rear ends of the limiting support 451. The rear end of the first telescopic rod 453 is fixedly installed on the limiting support 451. 1. The front end of the first telescopic rod 453 passes through the limiting support 451 and is fixedly connected to the limiting plate. The extension and retraction of the first telescopic rod 453 can drive the limiting plate 452 to extend and retract toward the center of the placement frame 42. The limiting plate 452 is set as an arc plate. A first ball groove is opened on the contact surface between the arc plate and the basketball to be tested. Multiple first balls 454 are installed in the first ball groove. While limiting and fixing the basketball to be tested, the multiple first balls 454 facilitate the basketball to be tested to rotate flexibly 360° on the limiting plate 452.

[0035] The placement rack 42 is designed as a semi-circular ring structure, and the radius of the placement rack 42 is smaller than the diameter of the basketball to be tested. The inner side of the placement rack 42 is provided with a second ball groove, and multiple second balls 421 are installed in the second ball groove, which facilitates the basketball to be tested to rotate 360° flexibly on the placement rack 42.

[0036] In this embodiment, the moving unit 46 includes a mounting base 461, a fourth lead screw 462, a third telescopic rod 463, and a vacuum suction cup 464. The mounting base 461 is disposed on the test frame 1, the fourth lead screw 462 is vertically disposed on the mounting base 461, one end of the third telescopic rod 463 is threadedly connected to the fourth lead screw 462 through a moving block, and the other end is fixedly connected to the top of the vacuum suction cup 464. The vacuum suction cup 464 is used to adsorb the basketball to be tested.

[0037] In this embodiment, the sorting unit 6 includes a sorting slide 61, a partition baffle 62, and a rotating plate 63. The inlet of the sorting slide 61 is connected to the second outlet 24. The partition baffle 62 is located at the lower part of the sorting slide 61 and is used to divide the sorting slide 61 into two branch slides. The rotating plate 63 is rotatably connected to the top of the partition baffle 62. A third motor 64 for driving the rotating plate 63 to rotate is provided at the bottom of the sorting slide 61. The third motor 64 is fixedly installed on the control box 5.

[0038] In this embodiment, the elasticity detection unit 22 in test frame 2 uses a high-speed camera, such as... Figure 16As shown, two high-speed cameras are respectively installed on the front and rear side walls of the test frame 2 (only the camera lenses are shown in the figure; the base of the high-speed cameras is not shown. The base of the high-speed cameras can be mounted on the outer side wall of the test frame 2 via a bracket). When the basketball to be tested falls from the test frame 2 and bounces, both high-speed cameras can capture the maximum rebound height of the basketball. The control unit obtains the two maximum rebound heights and can obtain the average value of the maximum rebound height. Then, based on the average value of the maximum rebound height, the elastic deformation of the basketball to be tested can be calculated more accurately. The greater the elastic deformation, the higher the rebound height of the basketball to be tested.

[0039] The working process of the basketball elasticity testing device in this embodiment is as follows: First, the basketball to be tested is sequentially conveyed to the area below the clamping unit 32 via the conveying unit 31. The first lead screw 322 is controlled to rotate, moving the second telescopic rod 323 to the basketball to be tested, so that the second marker 332 is positioned directly above the basketball to be tested. Then, the extension length of the second telescopic rod 323 is adjusted so that the central axes of the two clamping discs 329 coincide with the X-axis of the basketball to be tested. The second lead screw 325 and the third lead screw 326 are controlled to rotate, so that the clamping discs 329 clamp the basketball to be tested in the conveying unit 31. Then, the basketball to be tested is sequentially marked, clamped, and placed into the test inlet 21. By adjusting the second telescopic rod 323, the basketball to be tested falls into the test frame 2 at a set height. The basketball to be tested sequentially falls and bounces. The elasticity detection unit 22 detects the maximum rebound distance of the basketball to be tested and transmits the result to the control unit. The control unit calculates the elasticity value. Afterwards, the basketball to be tested is pushed by the first push plate 28 through the slide 41 and stabilized on the placement rack 42. The first push plate 28 retracts to its original position, and the actuating unit 44 actuates the basketball to be tested. The label recognizer 43 identifies the intersection points of the untested marks, and the actuating unit 44 stops actuating. The vacuum suction cup 464 on the moving unit 46 picks up the basketball to be tested, and through the adjustment of the fourth lead screw 462 and the third telescopic rod 463, the basketball to be tested is put back into the test frame 2 until the six intersection points of the marks on the basketball to be tested are tested. Finally, the moving door 25 of the first exit 23 is closed, and then the moving door 25 of the second exit 24 is opened. According to the test results of the control unit, the test basketball is sorted and recycled. The third motor 64 adjusts the rotation angle of the separating baffle 62 to achieve the classification and recycling of qualified and unqualified basketballs.

[0040] In another aspect, the present invention also provides a method for testing the elasticity of a basketball, comprising the following steps: S1: Control the conveying unit 31 to convey the basketball to be tested to the area directly below the clamping unit 32; S2: Establish a spatial rectangular coordinate system with the center of the basketball to be tested as the center, and mark the six intersection points of the basketball to be tested with the X-axis, Y-axis and Z-axis; S3: The basketball to be tested is transported to the top of the test frame 2 by the clamping unit 32. At this time, one intersection point of the basketball to be tested is located directly below the basketball to be tested. The clamping unit 32 is controlled to release, so that the basketball to be tested can fall freely into the test frame 2 under the action of gravity for testing, and the elastic deformation at the intersection point of the basketball to be tested is obtained. S4: Open the movable door 25 at the first exit 23, so that the first push plate 28 pushes the basketball to be tested onto the placement rack 42. The label recognizer 43 scans the surface of the basketball on the placement rack 42. The basketball to be tested is rotated by the toggle unit 44 so that the untested intersection point on the basketball to be tested is located at the center directly above the label recognizer 43. S5: Control the moving unit 46 to move the basketball to be tested to the top of the test frame 2, and let the basketball to be tested fall freely into the test frame 2 under the action of gravity for testing, and obtain the elastic deformation of the untested intersection point of the basketball to be tested; S6: Repeat steps S4-S5 until the test is completed at the six intersection points, and obtain the elastic deformation of the basketball to be tested at the six points. Close the moving door 25 of the first exit 23, and then open the moving door 25 of the second exit 24 to sort and collect the test basketball.

[0041] In this embodiment, if the elastic deformation error of any two of the six points is within 3% to 5%, the basketball to be tested is determined to be a qualified basketball in terms of elasticity; otherwise, it is a basketball with unqualified elasticity. Qualified and unqualified basketballs are output from two separate slides, thereby enabling the uniformity of the basketball's elasticity to be effectively judged.

[0042] Example 2: Refer to Appendix Figure 18 As shown, the present invention provides an optimized technical solution based on embodiment 1: guide plates 7 are provided on both sides of the test frame 2 near the moving door 25, and the two sides of the first push plate 28 contact the inner wall of the test frame 2 without abutting. In this embodiment, the guide plates 7 are inclined to both sides along the direction away from the moving plate 25, and as shown in the attached figure. Figure 18 As shown, the horizontal length L of the guide plate 7 within the test frame 2 is less than the radius R of the basketball. This means that when the first push plate 28 pushes the basketball, regardless of the basketball's position within the test frame 2, the inclined guide plate 27 can smoothly push the basketball to the sliding door 25. This avoids the direct contact and compression between the basketball and the edge of the sliding door 25 during the pushing process in Embodiment 1, thereby preventing the basketball from getting stuck, the deformation of the first push plate 28, and the increased load on the pushing power system. Furthermore, the design that L is less than R ensures that when the first push plate 28 contacts the guide plate 7, the lowest point of the basketball's weight leaves the test frame 2, allowing the basketball to fall naturally from the sliding door 25, thus ensuring the smooth pushing of the basketball.

[0043] Example 3: Refer to Appendix Figure 19As shown, the present invention provides a technical solution different from Embodiment 2: the first push plate 28 includes a fixed push plate 283 containing a pushing power system and deflection plates 281 rotatably mounted at both ends of the fixed push plate 283 via a rotating shaft, and a torsion spring 282 is sleeved on the rotating shaft, with its two ends respectively abutting against the fixed push plate 283 and the deflection plate 281. In this embodiment, the fixed push plate 283 is attached to the... Figure 19 The longitudinal length dimension of the ball is the same as that of the sliding door 25. When pushing the ball, regardless of the size of the basketball, when the first push plate 28 contacts the guide plate 7, the continued pushing of the guide plate 7 will drive the deflection plate 281 to deflect relative to the fixed push plate 283. At the same time, the torsion spring 282 is twisted and contracted under force, so that the fixed push plate 283 can continue to push until the basketball is pushed away from the test frame 2, so as to ensure the stable delivery of the basketball.

[0044] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and not to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A basketball elasticity testing device, characterized in that, include: Test fixture; A test frame is provided on the test rack. The test frame has a test inlet at the top and an elasticity detection unit installed on the wall. The test frame has a first outlet on the bottom left and a second outlet on the bottom front. The test frame has a first push plate and a second push plate on the bottom right and bottom rear, respectively, for pushing the basketball to be tested to the first outlet and the second outlet. Both the first outlet and the second outlet have a sliding door. The second outlet also has a sorting unit for sorting and outputting qualified and unqualified basketballs. The feeding mechanism, located on the right side of the test frame, includes a conveying unit and a clamping unit. One end of the conveying unit is located on the test frame, and the other end is installed outside the test frame, for conveying the basketball to be tested to the test frame. The clamping unit is located on the top of the test frame, for marking, clamping, and placing the basketball to be tested on the conveying unit into the test inlet in sequence. A circulation mechanism, located at the first outlet, includes a slide, a placement rack, a label reader, a toggle unit, and a moving unit. The slide is located at the first outlet, the placement rack is located to the left of the slide, the label reader is located directly below the placement rack, and the label reader has at least two toggle units circumferentially arranged for rotating the basketball to be tested on the placement rack. The moving unit is located on one side of the placement rack for throwing the rotated basketball into the test inlet. The control unit, the test frame, the feeding mechanism and the circulation mechanism are all connected to the control unit circuit.

2. The basketball elasticity testing device according to claim 1, characterized in that, The actuation unit is provided in four parts, which are evenly distributed around the outer perimeter of the tag recognizer. Each actuation unit includes an actuation support, a drive motor, and a rotating wheel. The actuation support is mounted on the test frame, the rotating wheel is located on the upper part of the actuation support, and the drive motor is located on the lower part of the actuation support to drive the rotating wheel to rotate. The rotation axes of the rotating wheels in two adjacent actuation units are perpendicular to each other in the horizontal direction.

3. The basketball elasticity testing device according to claim 2, characterized in that, The circulation mechanism also includes a limiting unit. Two limiting units are symmetrically arranged on the front and rear sides of the placement frame, respectively, for limiting and fixing the basketball to be tested. The limiting unit includes a limiting support, a limiting plate, and a first telescopic rod. The limiting support is installed on the test frame. The limiting plate and the first telescopic rod are both located on the limiting support. The first telescopic rod can drive the limiting plate to extend and retract toward the center of the placement frame. The limiting plate is set as an arc-shaped plate. A first ball groove is opened on the contact surface between the arc-shaped plate and the basketball to be tested. A plurality of first balls are installed in the first ball groove.

4. The basketball elasticity testing device according to claim 3, characterized in that, The placement frame is configured as a semi-circular ring structure, and a second ball groove is provided on the inner side of the placement frame, in which a plurality of second balls are installed.

5. The basketball elasticity testing device according to any one of claims 1-4, characterized in that, The clamping unit includes a fixed frame, a first lead screw, a second telescopic rod, a movable frame, a second lead screw, a third lead screw, a first lead nut, and a second lead nut; The fixed frame is installed on the top of the test frame, the first lead screw is horizontally installed on the fixed frame, the upper end of the second telescopic rod is threaded to the first lead screw through a connecting block, and the lower end of the second telescopic rod is connected to the top of the movable frame. The movable frame has a mounting groove at its bottom. The second lead screw and the third lead screw are arranged in the same direction of rotation and parallel to each other in the mounting groove. The ends of the second lead screw and the third lead screw are respectively provided with a first gear and a second gear, which mesh with each other. A first motor is provided at one end of the second lead screw. A first nut and a second nut are respectively installed on the second lead screw and the third lead screw. A gripping disc is installed at the bottom of the first nut and the second nut. The two gripping discs are arranged opposite each other, and each gripping disc is provided with a second motor, which can drive the gripping disc to rotate. A first marker is provided in the middle of each gripping disc, and a second marker is also installed at the bottom of the mounting groove. The two gripping discs have rotating axes that coincide with each other, and the rotating axes coincide with the horizontal center axis of the basketball to be tested. The second marker is located directly above the basketball to be tested.

6. The basketball elasticity testing device according to claim 5, characterized in that, The conveying unit includes a conveyor belt, a negative pressure suction plate, and a support base. One end of the conveyor belt extends into the test frame and is installed at the bottom of the test frame, while the other end is installed outside the test frame. The negative pressure suction plate has a hollow structure and passes through the conveyor belt. It has multiple exhaust ports on its top surface and multiple exhaust pipes on one side of the negative pressure suction plate. All of the exhaust pipes are connected to an external air pump. A support base is provided on the conveyor belt directly above each exhaust port. The top surface of the support base is concave and has a first through hole communicating with the exhaust port. A second through hole is correspondingly provided on the conveyor belt below the first through hole.

7. The basketball elasticity testing device according to claim 6, characterized in that, The moving unit includes a mounting base, a fourth lead screw, a third telescopic rod, and a vacuum suction cup. The mounting base is located on the test frame. The fourth lead screw is vertically mounted on the mounting base. One end of the third telescopic rod is threadedly connected to the fourth lead screw via a moving block, and the other end is fixedly connected to the top of the vacuum suction cup. The vacuum suction cup is used to adsorb the basketball to be tested. The sorting unit includes a sorting chute, a partition baffle, and a rotating plate. The inlet of the sorting chute is connected to the second outlet. The partition baffle is located at the lower part of the sorting chute and is used to divide the sorting chute into two branch chutes. The rotating plate is rotatably connected to the top of the partition baffle. A third motor that drives the rotating plate to rotate is provided at the bottom of the sorting chute.

8. The basketball elasticity testing device according to claim 7, characterized in that, Guide plates are provided on both sides of the test frame near the movable door, and the two sides of the first push plate are in contact with the inner wall of the test frame without abutting each other.

9. The basketball elasticity testing device according to claim 8, characterized in that, The first push plate includes a fixed push plate and deflection plates that are rotatably mounted on both ends of the fixed plate by means of a rotating shaft, and a torsion spring is sleeved on the rotating shaft, with its two ends respectively abutting against the fixed push plate and the deflection plate.

10. A method for testing the elasticity of a basketball. Includes the following steps: S1: The control delivery unit delivers the basketball to be tested to the area directly below the gripping unit; S2: Establish a spatial rectangular coordinate system with the center of the basketball to be tested as the center, and mark the six intersection points of the basketball to be tested with the X-axis, Y-axis and Z-axis; S3: The basketball to be tested is transported to the top of the test frame through the clamping unit. At this time, one intersection point of the basketball to be tested is located directly below the basketball to be tested. The clamping unit is controlled to release, allowing the basketball to fall freely into the test frame under the action of gravity for testing, and the elastic deformation at the intersection point of the basketball to be tested is obtained. S4: Open the movable door at the first exit, so that the first push plate pushes the basketball to be tested onto the placement rack. The label reader scans the surface of the basketball on the placement rack and rotates the basketball to be tested by the toggle unit so that the untested intersection point on the basketball to be tested is located at the center directly above the label reader. S5: Control the moving unit to move the basketball to be tested to the top of the test frame, and let the basketball fall freely into the test frame under the action of gravity to conduct the test, and obtain the elastic deformation of the untested intersection point of the basketball to be tested. S6: Repeat steps S4-S5 until the test is completed at the six intersection points, obtain the elastic deformation of the basketball to be tested at the six points, close the moving door of the first exit, and then open the moving door of the second exit to sort and collect the test basketball.

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