Tire airtightness detection device

Abstract

The utility model belongs to the field of tire production and detection, and particularly discloses a tire air tightness detection device, which comprises a clamping mechanism, a driving mechanism and a detection mechanism, the first detection assembly comprises a first controller and a first detection piece used for detecting the air pressure in the tire, the signal input end of the first controller is used for receiving a detection signal of the first detection piece, and the signal output end of the first controller is used for controlling the driving mechanism to drive the clamping mechanism to rotate; and the second detection assembly comprises a second controller, a second detection piece used for detecting the air leakage position and a marking piece used for marking at the air leakage position, the signal input end of the second controller is used for receiving a detection signal of the second detection piece, and the signal output end of the second controller is used for controlling the marking piece to move and marking on the tire. By adopting the scheme of the utility model, the problem that even if the tire has no air leakage point, the tire needs to rotate by one circle for detection, so that the detection time is increased can be solved.

Description

Technical Field

[0001] The utility model belongs to the field of tire production detection, and specifically relates to a tire air tightness detection device. Background Art

[0002] Tires are important parts of cars. If a tire leaks while the car is driving, the vehicle may not be able to drive normally at best, or even lose control and cause a serious traffic accident, which is very dangerous. Therefore, after the car tires are produced, it is often necessary to use an air tightness testing device to test the air tightness of the tires.

[0003] The air tightness detection method in the prior art usually places the tire in a basin filled with water, and then rotates the tire in the water manually or through a related mechanical structure (for example, by clamping the tire with a clamp) to find out whether there is a leak. However, this detection method is prone to the problem of the tire getting wet because the tire is immersed in water, and it is difficult to mark the tire leak directly in the water after the tire leak is detected. In addition, the existing tire air tightness detection methods all require the tire to rotate one circle for detection. Even if the tire has no leak, it still needs to rotate one circle, which increases the detection time. Utility Model Content

[0004] In view of the deficiencies in the prior art, the utility model provides a tire air tightness detection device to solve the problem that even if the tire has no leaking point, it needs to be rotated one circle for detection, resulting in increased detection time.

[0005] According to the embodiment of the utility model, the utility model adopts the following technical solution:

[0006] A tire air tightness detection device comprises a clamping mechanism for clamping a tire, a driving mechanism for driving the clamping mechanism to drive the tire to move, and a detection mechanism for detecting the air tightness of the tire, wherein the detection mechanism comprises a first detection component for detecting tire air pressure and a second detection component for detecting a tire leakage position; the first detection component comprises a first controller and a first detection piece for detecting the air pressure inside the tire, the signal input end of the first controller is used to receive a detection signal of the first detection piece, and the signal output end of the first controller is used to control the driving mechanism to drive the clamping mechanism to rotate or control the clamping mechanism to release the tire; the second detection component comprises a second controller, a second detection piece for detecting a leakage position, and a marking piece for marking the leakage position, the signal input end of the second controller is used to receive a detection signal of the second detection piece, and the signal output end of the second controller is used to control the movement of the marking piece and mark on the tire.

[0007] Compared with the prior art, the utility model has the following beneficial effects:

[0008] In this solution, by detecting the air pressure in the tire, it is determined whether the tire has air leakage based on the change in the detected air pressure value. If no air leakage is detected, the first controller can directly control the clamping mechanism to loosen the tire, making it easier for the staff to remove the tire without performing subsequent inspections, thereby improving inspection efficiency.

[0009] If a leak is detected, the first controller controls the driving mechanism to drive the clamping mechanism to rotate, causing the tire to rotate one circle to detect the leaking location. After the second detection component detects the leaking location, it marks it through the marking component to record the leaking location for subsequent processing.

[0010] Furthermore, the clamping mechanism includes a rotatable turntable and a plurality of clamping jaws distributed along the circumference of the turntable, and the clamping jaws are slidably connected to the turntable along the radial direction of the turntable.

[0011] Furthermore, it also includes a discharging mechanism, which includes qualified lines and unqualified lines arranged in parallel; the clamping mechanism also includes a sliding plate, the turntable is rotatably connected to the slide, and the sliding direction of the slide is along the arrangement direction of the qualified lines and the unqualified lines.

[0012] Furthermore, the clamping claw comprises a mounting portion slidably connected to the rotating disk along the radial direction of the rotating disk and a clamping portion hinged to the mounting portion.

[0013] Furthermore, the first detection component includes a push plate connected to the turntable, an air inlet hole provided on the push plate, and an air pressure sensor installed on the push plate. Sealing rings are installed on opposite sides of the push plate and the turntable.

[0014] Furthermore, the second detecting member includes a sliding plate slidably arranged along the radial direction of the rotating disk and a distance sensor for detecting the position of the sliding plate.

[0015] Furthermore, the marking member comprises a slide bar arranged to slide radially along the turntable and a marking head fixed to the end of the slide bar facing the turntable, and the second controller is used to control the sliding of the slide bar.

[0016] Furthermore, the marking member and the second detecting member are distributed along the rotation direction of the turntable, and the marking member is arranged downstream of the second detecting member. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the overall structure of an embodiment of the utility model.

[0018] Figure 2 It is a side view of the clamping mechanism in the embodiment of the utility model.

[0019] In the figure: 1. skateboard; 2. turntable; 3. tire; 4. slide; 5. clamping part; 6. mounting part; 7. clamping claw; 8. slide; 9. spring; 10. distance sensor; 11. qualified line; 12. unqualified line; 13. push plate; 14. electric telescopic rod; 15. air inlet; 16. air pressure sensor; 17. slide rod; 18. marking head. DETAILED DESCRIPTION

[0020] The utility model is further described in detail below with reference to the accompanying drawings, and specific implementation methods are given.

[0021] like Figure 1 , Figure 2 As shown, the tire air tightness detection device includes a frame, the frame is provided with a clamping mechanism for clamping the tire 3, a driving mechanism for driving the clamping mechanism to drive the tire 3 to move, and a detection mechanism for detecting the air tightness of the tire 3. In this embodiment, the clamping mechanism includes a turntable 2 rotatably connected to the frame and a plurality of clamping jaws 7 distributed circumferentially along the turntable 2. A motor for driving the turntable 2 to rotate is installed on the frame, and the clamping jaws 7 are connected to the turntable 2 along the radial sliding direction of the turntable 2. The clamping jaws 7 are used to clamp the tire 3 from the inner side of the tire 3. In this embodiment, the clamping jaws 7 can be selected from the clamping jaws 7 with a clamping function in the prior art, and a cylinder for driving the clamping jaws 7 to slide is installed on the turntable 2.

[0022] The detection mechanism includes a first detection component for detecting the air pressure of the tire 3 and a second detection component for detecting the position of the air leakage of the tire 3. The first detection component includes a first controller and a first detection member for detecting the air pressure inside the tire 3. The signal input end of the first controller is used to receive the detection signal of the first detection member, and the signal output end of the first controller is used to control the driving mechanism to drive the clamping mechanism to rotate or control the clamping mechanism to release the tire 3. Specifically, the first detection member includes a push plate 13 connected to the turntable 2, an air inlet 15 provided on the push plate 13, and an air pressure sensor 16 installed on the push plate 13. The push plate 13 and the opposite side of the turntable 2 are both installed with sealing rings. When in use, the push plate 13 is bolted to the turntable 2, and the push plate 13 and the sealing rings on the turntable 2 are against the side of the tire 3, forming a closed space in the middle of the tire 3. Gas is filled through the air inlet 15, and the air pressure sensor 16 detects the air pressure inside the tire 3. According to the air pressure signal threshold set by the first controller, when the gas filled gradually increases, and the air pressure exceeds the set threshold and still increases, it can be judged that there is no air leakage. At this time, the first controller controls the clamping claw 7 to slide and no longer clamp the tire 3, so that the subsequent staff can remove the tire 3. When the gas filled gradually increases, but it still cannot reach the set threshold, it can be judged that there is air leakage. At this time, the first controller controls the turntable 2 to rotate, driving the tire 3 to rotate one circle.

[0023] The second detection assembly includes a second controller, a second detection member for detecting the leaking position, and a marking member for marking the leaking position. The signal input end of the second controller is used to receive the detection signal of the second detection member, and the signal output end of the second controller is used to control the movement of the marking member and mark the tire 3. Specifically, the marking member and the second detection member are distributed along the rotation direction of the turntable 2, and the marking member is arranged downstream of the second detection member. Figure 1 Taking the direction shown in as an example, the turntable 2 rotates clockwise. During the rotation of the turntable 2, the leaking part of the tire 3 is first detected by the second detection component. During the continued rotation, the leaking part can be marked by the marking component.

[0024] The second detection member includes a slide 8 connected to the frame along the radial direction of the turntable 2 and a distance sensor 10 for detecting the position of the slide 8. Specifically, the distance sensor 10 is fixed on the frame, and a spring 9 is fixedly connected between the slide 8 and the frame. When the slide 8 is subjected to the gas pressure of the leaking part of the tire 3, it is blown to slide on the frame, and the distance between the slide 8 and the distance sensor 10 changes, and the leaking part can be determined. In the actual design process, a windshield can be designed on the frame, and the tire 3 and the slide 8 are both covered by the windshield to prevent the wind in the detection environment from affecting the position of the slide 8.

[0025] The marking part includes a slide bar 17 which is arranged to slide radially along the turntable 2, and a marking head 18 which is fixed at the end of the slide bar 17 facing the turntable 2. In the actual design process, the end of the marking head 18 can be dipped in paint to leave a mark on the leaking part with the paint. The second controller is used to control the sliding of the slide bar 17. Specifically, a cylinder for driving the slide bar 17 to slide is fixed on the frame, and the second controller controls the cylinder to drive the slide bar 17 to slide.

[0026] During specific use, the tire 3 is placed on the clamping jaws 7, and then the clamping jaws 7 are slid so that the clamping jaws 7 clamp the tire 3, and the push plate 13 is installed on the turntable 2 so that the push plate 13 and the turntable 2 clamp the tire 3 therein, and then air is inflated through the air inlet hole 15 on the push plate 13, and the air pressure is detected by the air pressure sensor 16. When no air leakage is detected on the tire 3, the first controller can directly control the clamping jaws 7 to slide, no longer clamp the tire 3, and no subsequent detection is performed.

[0027] When it is determined that there is air leakage on the tire 3, the first controller controls the turntable 2 to rotate. During the process of the turntable 2 driving the tire 3 to rotate, when the leaking part is aligned with the slide 8, the slide 8 is blown to slide on the frame when it is subjected to the gas pressure of the leaking part of the tire 3. After the distance sensor 10 detects that the distance has changed, the second controller controls the slide bar 17 to slide, driving the marking head 18 to mark the tire 3.

[0028] In another embodiment of the utility model, a discharging mechanism is further included. The discharging mechanism includes a qualified line 11 and a failed line 12 arranged in parallel. Specifically, both the qualified line 11 and the failed line 12 are conventional conveyor belts.

[0029] The clamping mechanism also includes a sliding plate 1, a turntable 2 is rotatably connected to the sliding plate 1, and the sliding direction of the sliding plate 1 is along the arrangement direction of the qualified line 11 and the unqualified line 12. Figure 1 Taking the direction shown in as an example, the sliding direction of the slide plate 1 is the left-right direction, and a cylinder for driving the slide plate 1 to slide is fixed on the frame. The clamping jaw 7 includes a mounting portion 6 connected to the turntable 2 along the radial sliding of the turntable 2 and a clamping portion 5 hinged on the mounting portion 6, and a micro motor for driving the clamping portion 5 to rotate is installed on the mounting portion 6. In order to prevent the clamping jaw 7 from interfering with the falling of the tire 3, a chute 4 for the mounting portion 6 to be embedded and slid is provided on the turntable 2. Due to the setting of the chute 4, the tire air tightness detection device in this scheme is suitable for detecting tires 3 with a radius less than the distance from the end of the chute 4 to the center of the turntable 2, so as to avoid the leakage of the detection gas through the chute 4. The mounting portion 6 slides in the chute 4, and the clamping portion 5 is rotated to clamp the tire 3. When the tire 3 does not need to be clamped, the clamping portion 5 is rotated and no longer clamps the tire 3. The depth of the chute 4 is greater than or equal to the sum of the thickness of the mounting portion 6 and the clamping portion 5. When the clamping portion 5 rotates and abuts against the mounting portion 6, the clamping portion 5 is also embedded in the chute 4.

[0030] In this embodiment, the push plate 13 and the turntable 2 are connected in the following manner: an electric telescopic rod 14 is fixed between the turntable 2 and the push plate 13, and when the turntable 2 is in the initial state, the electric telescopic rod 14 is located at the upper part of the turntable 2, and the push plate 13 is driven to slide by the electric telescopic rod 14, so that the push plate 13 and the turntable 2 cooperate to clamp the tire 3. When the tire 3 needs to be released, the push plate 13 is driven away from the turntable 2 by the electric telescopic rod 14, and then the clamping part 5 is rotated to make the tire 3 fall.

[0031] In the initial state, the clamping mechanism is located directly above the qualified line 11. After the tire 3 is judged to be free of air leakage through the detection of the first detection component, the push plate 13 is driven to slide and the clamping part 5 is rotated, so that the tire 3 can directly fall onto the qualified line 11. After the tire 3 is judged to be leaking through the detection of the first detection component, the detection of the second detection component is continued. After the second detection component detects and marks the leaking part, the slide plate 1 is slid so that the clamping mechanism is located directly above the unqualified line 12. Then, after the clamping of the tire 3 is released, the tire 3 can fall onto the unqualified line 12. In this solution, qualified and unqualified tires 3 are classified for subsequent processing.

[0032] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0033] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model rather than to limit it. Although the utility model has been described in detail with reference to the preferred embodiments, ordinary technicians in the field should understand that the technical solution of the utility model can be modified or replaced by equivalents without departing from the purpose and scope of the technical solution of the utility model, which should be included in the scope of the claims of the utility model.

Claims

1. A tire air tightness detection device, comprising a clamping mechanism for clamping a tire, a driving mechanism for driving the clamping mechanism to drive the tire to move, and a detection mechanism for detecting the air tightness of the tire, characterized in that: The detection mechanism includes a first detection component for detecting tire pressure and a second detection component for detecting a tire leak position; The first detection assembly includes a first controller and a first detection member for detecting the air pressure inside the tire, wherein the signal input end of the first controller is used to receive the detection signal of the first detection member, and the signal output end of the first controller is used to control the driving mechanism to drive the clamping mechanism to rotate or control the clamping mechanism to release the tire; The second detection component includes a second controller, a second detection component for detecting the leakage position, and a marking component for marking the leakage position. The signal input end of the second controller is used to receive the detection signal of the second detection component, and the signal output end of the second controller is used to control the movement of the marking component and mark the tire.

2. The tire air tightness detection device according to claim 1, characterized in that: The clamping mechanism comprises a rotatable turntable and a plurality of clamping claws distributed along the circumference of the turntable, wherein the clamping claws are slidably connected to the turntable along the radial direction of the turntable.

3. The tire air tightness detection device according to claim 2, characterized in that: It also includes a discharging mechanism, which includes qualified lines and unqualified lines arranged in parallel; the clamping mechanism also includes a sliding plate, the turntable is rotatably connected to the slide plate, and the sliding direction of the slide plate is along the arrangement direction of the qualified lines and the unqualified lines.

4. The tire air tightness detection device according to claim 3, characterized in that: The clamping claw comprises a mounting portion slidably connected to the rotating disk along the radial direction of the rotating disk and a clamping portion hinged to the mounting portion.

5. The tire air tightness detection device according to claim 2, characterized in that: The first detection component includes a push plate connected to the turntable, an air inlet hole provided on the push plate, and an air pressure sensor installed on the push plate. Sealing rings are installed on the opposite sides of the push plate and the turntable.

6. The tire air tightness detection device according to claim 1, characterized in that: The second detecting member includes a sliding plate slidably arranged along the radial direction of the rotating disk and a distance sensor for detecting the position of the sliding plate.

7. The tire air tightness detection device according to claim 1, characterized in that: The marking component comprises a slide bar arranged to slide radially along the turntable and a marking head fixed to the end of the slide bar facing the turntable. The second controller is used to control the sliding of the slide bar.

8. The tire air tightness detection device according to claim 1, characterized in that: The marking component and the second detecting component are distributed along the rotation direction of the turntable, and the marking component is arranged downstream of the second detecting component.

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