Table tennis quality detector

Abstract

A table tennis quality detector comprises a box body, a feeding mechanism, a projection mechanism, a speed detection mechanism and a controller. The feeding mechanism is arranged at the top end of the box body and comprises a shell, a feeding pushing mechanism and a feeding sliding rail, a feeding inlet and a feeding outlet are formed in the shell, the feeding pushing mechanism is installed in the shell corresponding to the feeding inlet and the feeding outlet, and the feeding sliding rail is arranged at the feeding outlet corresponding to the feeding pushing mechanism; the projection mechanism is arranged in the box body corresponding to the feeding mechanism and is used for projecting table tennis balls at a set speed; the speed detection mechanism is arranged in the box body corresponding to the projection mechanism, the ping-pong ball projected by the projection mechanism at a set speed rebounds repeatedly in the speed detection mechanism, and the speed detection mechanism collects time interval information of each rebound of the ping-pong ball; and the controller is connected with the speed detection mechanism and judges whether the table tennis ball to be detected is a qualified product or a defective product according to the time interval information.

Description

Technical Field

[0001] The utility model relates to a detection device, in particular to a table tennis quality detector. Background Art

[0002] With the continuous improvement of the competitive level of table tennis, the quality requirements for table tennis equipment, especially for the balls used in competitions, have also increased accordingly. However, the existing technologies lack methods and devices that can perfectly detect various performance indicators of table tennis online. The balls required for table tennis competitions still rely on manual screening among a large number of products, with low efficiency, high misdetection rate, and difficult quality assurance.

[0003] According to the latest T3 standard promulgated by the International Table Tennis Federation (ITTF), for table tennis balls with a diameter of 40 mm, its quality assessment system is rigorous and complex, covering multiple aspects such as weight, roundness, eccentricity, hardness, and bounce performance. Most of the existing technologies for detecting table tennis balls only measure a certain performance of the table tennis ball singly, and often cannot comprehensively reflect the quality of the table tennis ball. At the same time, most of the existing detection methods are static detections, and the quality of table tennis balls is detected by manual visual inspection or squeezing the table tennis balls. However, during the use of table tennis balls in competitions, they are in a beaten motion state. The specific influence degrees of various performances of table tennis balls are different when they are in a static or dynamic state. And currently, most of them are manually classified after the quality inspection, which wastes manpower and has low sorting efficiency. Summary of the Utility Model

[0004] The technical problem to be solved by the utility model is to provide a table tennis quality detector aiming at the above defects of the existing technology.

[0005] In order to achieve the above purpose, the utility model provides a table tennis quality detector, which includes:

[0006] A box body;

[0007] A feeding mechanism, arranged at the top of the box body, the feeding mechanism includes a housing, a feeding pushing mechanism and a feeding slide rail, and a feeding inlet and an outlet are arranged on the housing; the feeding pushing mechanism is installed in the housing corresponding to the feeding inlet and the outlet; the feeding slide rail is arranged at the outlet corresponding to the feeding pushing mechanism, and the width of the feeding slide rail is adapted to the diameter of the table tennis ball to be detected;

[0008] A projection mechanism, arranged in the box body corresponding to the feeding mechanism, and projects the table tennis ball to be detected at a set speed;

[0009] A speed detection mechanism, which is arranged in the box corresponding to the projection mechanism. The table tennis ball to be detected projected by the projection mechanism at a set speed rebounds multiple times in the speed detection mechanism, and the speed detection mechanism collects the time interval information of each rebound of the table tennis ball to be detected; and

[0010] A controller, which is connected to the speed detection mechanism and determines whether the table tennis ball to be detected is a qualified product or a defective product according to the time interval information.

[0011] The above-mentioned table tennis ball quality detector, wherein, it further includes:

[0012] A collection and classification mechanism, which is arranged in the box and located below the speed detection mechanism. The collection and classification mechanism includes:

[0013] A frame, which is arranged in the box corresponding to the speed detection mechanism;

[0014] A flip plate, which is installed in the frame and has a first flip position, a second flip position and a horizontal position respectively. When the flip plate is in the horizontal position, it forms a closed plane with the inner edge of the frame;

[0015] A classification motor, which is connected to the controller and is installed on the box through a classification motor bracket. The flip plate is connected to the classification motor through a classification drive shaft; and

[0016] A collection box, including a qualified product box and a defective product box. The first flip position corresponds to the qualified product box; the second flip position corresponds to the defective product box.

[0017] The above-mentioned table tennis ball quality detector, wherein, the inner edge of the frame is of an inclined surface structure.

[0018] The above-mentioned table tennis ball quality detector, wherein, the feeding and pushing mechanism includes a feeding motor and a windmill runner. The feeding motor is connected to the windmill runner and drives the windmill runner to rotate. The windmill runner corresponds to the feeding slide rail.

[0019] The above-mentioned table tennis ball quality detector, wherein, the projection mechanism includes a bracket, symmetrically arranged friction wheels and a drive motor corresponding to the friction wheels. The bracket includes an upper bracket and a lower bracket arranged in parallel, which are respectively installed in the box; the friction wheels are arranged on the upper bracket corresponding to the end of the feeding slide rail and are arranged symmetrically with the center line of the feeding slide rail as the symmetry center. The distance between the friction wheels is equal to the diameter of the table tennis ball to be detected; the drive motor is installed on the lower bracket; and is respectively connected to the corresponding friction wheel through a transmission chain.

[0020] The above-mentioned table tennis ball quality detector, wherein the transmission chain includes a driving wheel, a driven wheel and a transmission belt. The driving wheel is connected to the driving motor, the driven wheel is connected to the friction wheel, and the transmission belt is tensioned on the driving wheel and the driven wheel.

[0021] The above-mentioned table tennis ball quality detector, wherein the friction wheel includes a friction wheel shaft, a shaft sleeve, a friction wheel rubber ring and a deep groove ball bearing. The shaft sleeve is sleeved on the friction wheel shaft, and the friction wheel rubber ring is coated on the shaft sleeve; the deep groove ball bearing is installed on the friction wheel shaft and abuts against the shaft shoulder of the friction wheel shaft.

[0022] The above-mentioned table tennis ball quality detector, wherein the speed detection mechanism includes:

[0023] A rebound member, including a first rebound plate and a second rebound plate, which are respectively connected to corresponding first detection motors and second detection motors through drive shafts. The first rebound plate and the second rebound plate are oppositely arranged and have different heights; and

[0024] A plurality of infrared detection modules are arranged in the box body and connected to the controller. The plurality of infrared detection modules are respectively located between the first rebound plate and the second rebound plate and have different heights.

[0025] The above-mentioned table tennis ball quality detector, wherein the first detection motor and the second detection motor are respectively installed on the rear wall of the box body through corresponding detection motor brackets.

[0026] The above-mentioned table tennis ball quality detector, wherein the infrared detection module includes an infrared emitter and an infrared receiver connected to each other, and the infrared receiver is connected to the controller.

[0027] The beneficial effects of the present utility model are as follows:

[0028] The present utility model can perform dynamic and orderly detection on table tennis balls, and simultaneously classify and collect table tennis balls of different qualities. It has high detection accuracy, can accurately reflect the motion state of table tennis balls, and can meet the requirements of high-precision measurement; effectively reduces the misdetection rate, improves the detection efficiency, and ensures the detection quality.

[0029] The following describes the present utility model in detail with reference to the accompanying drawings and specific embodiments, but it is not a limitation to the present utility model. Description of the Drawings

[0030] Figure 1 is a schematic structural diagram of an embodiment of the present utility model;

[0031] Figure 2 is Figure 1 a side view of

[0032] Figure 3 is Figure 1 a sectional view of;

[0033] Figure 4 is a schematic structural diagram of a projection mechanism according to an embodiment of the present utility model;

[0034] Figure 5 is a schematic structural diagram of a friction wheel according to an embodiment of the present utility model;

[0035] Figure 6 is a schematic structural diagram of an infrared detection module according to an embodiment of the present utility model.

[0036] Among them, the reference numerals

[0037] 1 box body

[0038] 2 feeding mechanism

[0039] 21 housing

[0040] 22 windmill runner

[0041] 23 feeding motor

[0042] 24 feeding slide rail 3 projection mechanism

[0043] 31 friction wheel

[0044] 311 friction wheel rubber ring 312 bushing

[0045] 313 friction wheel shaft

[0046] 314 deep groove ball bearing 32 fixing member

[0047] 33 driving wheel

[0048] 34 driven wheel

[0049] 35 transmission belt

[0050] 36 motor

[0051] 37 bracket 4 speed detection mechanism

[0052] 41 first rebound plate

[0053] 42 second rebound plate

[0054] 43 first detection motor

[0055] 44 second detection motor

[0056] 45 first drive shaft

[0057] 46 second drive shaft

[0058] 47 infrared detection module

[0059] 471 Infrared emitter, 472 Infrared receiver, 5 Collection and classification mechanism

[0060] 51 Frame

[0061] 52 Flipping plate

[0062] 53 Classification motor

[0063] 54 Classification drive shaft

[0064] 55 First collection box

[0065] 56 Second collection box

[0066] 6 Controller Detailed implementation manners

[0067] The structural principle and working principle of the present utility model will be specifically described below in conjunction with the accompanying drawings:

[0068] See Figures 1-3 , Figure 1 which is a schematic structural diagram of an embodiment of the present utility model, Figure 2 is Figure 1 a side view of Figure 3 is Figure 1 a cross-sectional view of

[0069] In this embodiment, the feeding mechanism 2 includes: a housing 21 provided with a feeding inlet and an outlet respectively; a feeding pushing mechanism installed in the housing 21 corresponding to the feeding inlet and the outlet; and a feeding slide rail 24 provided corresponding to the feeding pushing mechanism at the outlet. The width of the feeding slide rail 24 is adapted to the diameter of the table tennis ball to be detected. The table tennis balls to be detected are arranged in sequence in the feeding slide rail 24 and slide along the feeding slide rail 24 towards the projection mechanism 3 in turn.

[0070] Wherein, the feeding pushing mechanism includes a windmill runner 22 and a feeding motor 23. The feeding motor 23 is connected to the windmill runner 22 and drives the windmill runner 22 to rotate. The windmill runner 22 is arranged corresponding to the feeding slide rail 24. When the blades of the windmill runner 22 rotate, the table tennis balls to be detected are pushed into the feeding slide rail 24.

[0071] See Figure 3 , in this embodiment, the collection and classification mechanism 5 includes: a frame 51 fixed around the inner wall of the box body 1 and provided with a hollow in the middle; a turning plate 52 connected to a classification motor 53 through a classification drive shaft 54 and located in the hollow part of the frame 51. The length and width of the turning plate 52 are adapted to the length and width of the hollow part of the frame 51; the classification motor 53 is connected to the controller 6; and a collection component including a first collection box 55 and a second collection box 56, which are arranged at the bottom of the box body 1 corresponding to the left and right ends of the turning plate 52 and are symmetrically arranged with the axis of the classification drive shaft 54 as the center line. The table tennis balls to be detected enter the corresponding collection box after being judged.

[0072] See Figure 4 , Figure 4 is a schematic structural diagram of the projection mechanism 3 of an embodiment of the present invention. The projection mechanism 3 of this embodiment is a friction wheel projection structure, including: a bracket 37 supported and installed in the box body 1; a drive motor 36 installed on the bracket 37; a transmission chain connecting the friction wheel 31 and the drive motor 36; and the friction wheel 31 arranged on the bracket 37 corresponding to the end of the feeding slide rail 24 and symmetrically arranged with the center line of the feeding slide rail 24 as the center. The distance between the friction wheels 31 is equal to the diameter of the table tennis ball to be detected. The table tennis ball to be detected obtains a preset initial velocity between the friction wheels 31 and is projected towards the speed detection mechanism 4. Wherein, the transmission chain includes a driving wheel 33, a driven wheel 34 and a transmission belt 35. The driving wheel 33 is connected to the drive motor 36; the driven wheel 34 is connected to the friction wheel shaft 313, and the friction wheel shaft 313 can be installed on the upper support part of the bracket 37 through a fixing member 32; the transmission belt 35 is tensioned between the driving wheel 33 and the driven wheel 34. The drive motor 36 drives the friction wheel to rotate at a high speed through the transmission chain.

[0073] See Figure 5 , Figure 5 which is a schematic structural view of a friction wheel 31 according to an embodiment of the present utility model. Among them, the friction wheel 31 includes a friction wheel shaft 313, a shaft sleeve 312, a friction wheel rubber ring 311, and a deep groove ball bearing 314. The friction wheel shaft 313 and the deep groove ball bearing 314. The friction wheel shaft 313 is disposed corresponding to the end of the feeding slide rail 24 and is symmetrically disposed with the center line of the feeding slide rail 24 as the center; the shaft sleeve 312 wraps the side surface of the friction wheel shaft 313; the friction wheel rubber ring 311 is nested on the shaft sleeve 312; the deep groove ball bearing 314 is disposed at the end of the friction wheel rubber ring 311.

[0074] See Figure 6 , Figure 6 which is a schematic structural view of an infrared detection module 47 according to an embodiment of the present utility model. In this embodiment, the speed detection mechanism 4 collects the time interval information of each bounce of the table tennis ball to be detected through the infrared detection module 47. The speed detection mechanism 4 includes a bounce component and a plurality of infrared detection modules. The bounce component may include a first bounce plate 41 and a second bounce plate 42, which are respectively connected to the corresponding detection motors through drive shafts. The first bounce plate 41 and the second bounce plate 42 are oppositely disposed and have different heights. Among them, the drive shafts include a first drive shaft 45 and a second drive shaft 46, and the detection motors include a first detection motor 43 and a second detection motor 44. The first detection motor 43 and the second detection motor 44 respectively drive the first bounce plate 41 and the second bounce plate 42 to rotate through the corresponding first drive shaft 45 and second drive shaft 46 to adjust the angle to control the movement direction of the table tennis ball to be detected. A plurality of infrared detection modules 47 are disposed in the box body 1 and are connected to the controller 6. The plurality of infrared detection modules 47 are respectively located between the first bounce plate 41 and the second bounce plate 42 and have different heights. The plurality of infrared detection modules 47 upload the collected time interval information to the controller 6. At the same time, the table tennis ball to be detected enters the collection and classification mechanism 5 after bouncing multiple times between the first bounce plate 41 and the second bounce plate 42.

[0075] During operation, first place the table tennis balls into the feeding mechanism 2. The windmill runner 22 transports the table tennis balls to the feeding slide rail 24, and the table tennis balls enter the projection mechanism 3 in the box body 1 along the feeding slide rail 24; the table tennis balls pass through two friction wheels 31 that are driven by a driving motor 36 and rotate at high speed, and are shot at a preset speed towards the first rebound plate 41, and rebound multiple times between the first rebound plate 41 and the second rebound plate 42; when the table tennis balls move back and forth between the first rebound plate 41 and the second rebound plate 42, the infrared emitter 471 inside the box body 1 continuously emits infrared rays, the infrared rays are reflected on the surface of the table tennis balls, the infrared receiver 472 receives the reflected infrared signals, and converts them into electrical signals to the controller 6; the controller 6 analyzes the data, calculates the image of the change trend of the table tennis ball speed over time, and compares it with a preset model; at the same time, after a preset detection time, the first rebound plate 41 rotates counterclockwise so that the table tennis balls hit and enter the collection and classification device 5. Since the frame 51 has a certain curvature, it ensures that the table tennis balls can roll along the frame 51 to the upper end of the flipping plate 52 and wait for the signal from the controller 6; if it is less than or equal to the set error value, it is determined to be a qualified product, and the controller 6 controls the classification motor 53 to drive the classification drive shaft 54 to drive the flipping plate 52 to rotate counterclockwise. After the table tennis ball to be detected slides into the first collection box 55, the classification motor 53 drives the classification drive shaft 54 to drive the flipping plate 52 to reset; if it is greater than the set error value, it is determined to be a defective product, and the controller 6 controls the classification motor 53 to drive the classification drive shaft 54 to drive the flipping plate 52 to rotate clockwise. After the table tennis ball to be detected slides into the second collection box 56, the classification motor 53 drives the classification drive shaft 54 to drive the flipping plate 52 to reset; cycle the above detection process until the detection of this batch of table tennis balls is completed.

[0076] The utility model realizes the orderly detection of multiple table tennis balls by allowing the table tennis balls to enter the windmill runner of the feeding mechanism, thereby improving the efficiency; the synchronous belt drive is used to drive the friction wheels to rotate at high speed, which can more effectively transmit the motor power, reduce the energy loss, and improve the transmission efficiency; an infrared detection module is adopted, which is based on the Doppler effect and calculates the object speed by measuring the change in the frequency of the reflected or scattered infrared rays. This measurement method has high precision, can accurately reflect the movement state of the table tennis balls, and can meet the requirements of high-precision measurement; through the collection and classification device, the qualified and unqualified table tennis balls are separated, which is convenient for collection, and the collection box is fixed by the slide rail at the bottom of the box body, which is convenient for taking the collection box. Of course, the utility model can also have many other embodiments. Without departing from the spirit and essence of the utility model, those skilled in the art can make various corresponding changes and deformations according to the utility model, but these corresponding changes and deformations should all fall within the protection scope of the appended claims of the utility model.

Claims

1. A table tennis ball quality detector, characterized in that: include: Box; A feeding mechanism is arranged at the top of the box body, the feeding mechanism comprises a shell, a feeding pushing mechanism and a feeding slide rail, the shell is provided with a feeding inlet and an outlet; the feeding pushing mechanism is installed in the shell body corresponding to the feeding inlet and the outlet; the feeding slide rail is arranged at the outlet corresponding to the feeding pushing mechanism, and the width of the feeding slide rail is adapted to the diameter of the table tennis ball to be detected; A projection mechanism, which is arranged in the box corresponding to the feeding mechanism and projects the table tennis ball to be detected at a set speed; A speed detection mechanism is arranged in the box corresponding to the projection mechanism, and the table tennis ball to be detected projected by the projection mechanism at a set speed bounces multiple times in the speed detection mechanism, and the speed detection mechanism collects time interval information of each bounce of the table tennis ball to be detected; as well as The controller is connected to the speed detection mechanism and determines whether the table tennis ball to be detected is a qualified product or a defective product according to the time interval information.

2. The table tennis ball quality detector according to claim 1, characterized in that: Also includes: A collecting and classifying mechanism is arranged in the box and below the speed detecting mechanism, and the collecting and classifying mechanism comprises: A frame, arranged in the box corresponding to the speed detection mechanism; A flip plate is installed in the frame and has a first flip position, a second flip position and a horizontal position. When the flip plate is in the horizontal position, it forms a closed plane with the inner edge of the frame; A sorting motor connected to the controller and mounted on the box body via a sorting motor bracket, wherein the flip plate is connected to the sorting motor via a sorting drive shaft; and The collection box includes a qualified product box and a defective product box, wherein the first flipping position corresponds to the qualified product box; and the second flipping position corresponds to the defective product box.

3. The table tennis ball quality detector according to claim 2, characterized in that: The frame has an inclined surface structure near the inner edge.

4. The table tennis ball quality detector according to claim 1, characterized in that: The feeding and pushing mechanism comprises a feeding motor and a windmill wheel. The feeding motor is connected to the windmill wheel and drives the windmill wheel to rotate. The windmill wheel is arranged corresponding to the feeding slide rail.

5. The table tennis ball quality detector according to claim 1, characterized in that: The projection mechanism includes a bracket, symmetrically arranged friction wheels and a driving motor arranged corresponding to the friction wheels. The bracket includes an upper bracket and a lower bracket arranged in parallel and respectively installed in the box; the friction wheels are arranged on the upper bracket corresponding to the end of the feed slide rail and are arranged with the center line of the feed slide rail as the symmetrical center. The spacing between the friction wheels is equal to the diameter of the table tennis ball to be detected; the driving motor is installed on the lower bracket; and is respectively connected to the corresponding friction wheels through transmission chains.

6. The table tennis ball quality detector according to claim 5, characterized in that: The transmission chain comprises a driving wheel, a driven wheel and a transmission belt, the driving wheel is connected to the driving motor, the driven wheel is connected to the friction wheel, and the transmission belt is tensioned on the driving wheel and the driven wheel.

7. The table tennis ball quality detector according to claim 5, characterized in that: The friction wheel comprises a friction wheel shaft, a sleeve, a friction wheel rubber ring and a deep groove ball bearing. The sleeve is sleeved on the friction wheel shaft, and the friction wheel rubber ring is covered on the sleeve. The deep groove ball bearing is installed on the friction wheel shaft and abuts against the shoulder of the friction wheel shaft.

8. The table tennis ball quality detector according to claim 1, characterized in that: The speed detection mechanism comprises: A rebound component, including a first rebound plate and a second rebound plate, which are respectively connected to the corresponding first detection motor and the second detection motor through a driving shaft, and the first rebound plate and the second rebound plate are arranged opposite to each other and have different heights; and A plurality of infrared detection modules are arranged in the box and connected to the controller. The plurality of infrared detection modules are respectively located between the first rebound plate and the second rebound plate and have different heights.

9. The table tennis ball quality detector according to claim 8, characterized in that: The first detection motor and the second detection motor are respectively installed on the rear wall of the box through corresponding detection motor brackets.

10. The table tennis ball quality detector according to claim 8, characterized in that: The infrared detection module includes an infrared transmitter and an infrared receiver connected to each other, and the infrared receiver is connected to the controller.

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