Air tightness detection device for rubber tire production and detection method thereof

Abstract

The invention relates to the technical field of rubber tire detection, in particular to an air tightness detection device for rubber tire production and a detection method thereof. Comprising a detection platform, and a telescopic groove is formed in the top of the detection platform; and a tire supporting mechanism movably penetrates through the telescopic groove. The tire limiting mechanism is controlled to limit and fix a rubber tire, then the tire supporting mechanism is controlled to be separated from the rubber tire, the detection marking mechanism is controlled to wrap a part of the rubber tire, and then the tire limiting mechanism is controlled to drive the rubber tire to rotate; through the arrangement of the detection marking mechanism, the detection marking mechanism can mark the air leakage position while detecting the surface in the rotation process of the rubber tire, the problems that manual detection wastes time and omission is likely to happen are solved, the detection work efficiency is improved, the air leakage point can be accurately marked, and the detection efficiency is improved. The problem that follow-up repair is inconvenient due to the fact that no mark exists after existing liquid detection is dried is solved, and the using effect of the detection device is improved.

Description

Technical Field

[0001] The invention belongs to the technical field of rubber tire detection, and particularly relates to an air tightness detection device for rubber tire production and a detection method thereof. Background Art

[0002] The air tightness of automobile tires is an important parameter of automobile tire quality and has a vital impact on its tire quality. The currently commonly used tire air tightness detection method is manual detection, which is to put the tire into water to find the leak point.

[0003] After searching, in the prior art, the Chinese patent announcement number: CN213209391U, announcement date: 2021-05-14, discloses a tire airtightness performance detection device, which belongs to the technical field of tire detection devices. A tire airtightness performance detection device includes a base, a mounting frame is provided on the top surface of the left side of the base, a mounting slot A is opened at the bottom of the mounting frame, a servo motor is arranged in the mounting slot A, a mounting slot B is provided on the top of the mounting slot A, a moving block is provided in the mounting slot B, a screw rod is penetrated in the middle of the moving block, a water tank is provided on the top of the mounting frame, a valve body is provided on the top of the water tank, a connecting water pipe is provided on the top of the valve body, a connecting rod is provided on the right side of the upper part of the mounting frame, and a water spray body is provided at the bottom of the connecting rod. The utility model arranges a spring and a rubber ring on the inner side of the block B, so that the rubber ring is pushed by the spring and closely contacts the tire to fix the tire on the support rod, and the bevel gear A and the bevel gear B are meshed and driven to drive the threaded telescopic rod A and the support rod to rotate, so as to facilitate the detection and observation of the tire surface, effectively improve the efficiency of tire airtightness detection, and save manpower.

[0004] However, the detection device still has the following defects:

[0005] The existing detection device, when performing air tightness detection on a rubber tire, usually inflates the rubber tire first, then sprays soap solution on the surface of the tire, and observes the bubbles to find the leakage point. However, manual detection of the leakage point is time-consuming and laborious and easy to miss. At the same time, there is no mark on the leakage point of the tire after the soap solution evaporates. If there are too many leakage points, it is not convenient for subsequent repair work, so it lacks use effect. Summary of the invention

[0006] In view of the above problems, the present invention provides an air tightness detection device for rubber tire production, comprising a detection platform, wherein two groups of electric slides are symmetrically arranged at the edges of both sides of the top of the detection platform; two groups of support columns are transmission-connected to the output ends of the two groups of electric slides; and cross plates are arranged on the tops of the two groups of support columns;

[0007] A first electric push rod is provided at the top center of the transverse plate; the first electric push rod extends to the bottom of the transverse plate and is transmission-connected to a first motor; a tire limiting mechanism is transmission-connected to the output end of the first motor;

[0008] A telescopic slot is provided on the top of the detection platform; a tire support mechanism is movably inserted into the telescopic slot; a first slide slot is provided at one side edge of the top of the detection platform; a detection marking mechanism is provided in the first slide slot;

[0009] The tire supporting mechanism is controlled to expose the hollow part of the rubber tire, so that the tire limiting mechanism can fix the rubber tire from the hollow part.

[0010] Furthermore, a connecting ring is sleeved on the outer wall of the tire limiting mechanism; the bottom of the connecting ring is movably fitted on the top of the tire limiting mechanism and is connected to the tire limiting mechanism; a variable frequency air pump is provided on the top of the cross plate; the output end of the variable frequency air pump extends to the bottom of the cross plate and is connected with a telescopic tube; the end of the telescopic tube away from the variable frequency air pump is connected to the connecting ring; a plurality of groups of second electric push rods are provided at the bottom of the telescopic groove; the output ends of the plurality of second electric push rods are all transmission-connected to the tire supporting mechanism.

[0011] Furthermore, the tire limiting mechanism includes a disc shell; a plurality of groups of connecting grooves are arranged in a circular array on the top of the disc shell; a plurality of groups of connecting grooves are connected to a connecting ring; a plurality of groups of second slide grooves are arranged in a circular array on the bottom of the disc shell; a group of limiting columns are arranged in each group of the second slide grooves; each group of limiting columns is a triangular prism; a plurality of groups of limiting grooves are arranged at equal intervals on the edges of each group of limiting columns away from the central axis of the disc shell.

[0012] Furthermore, a connecting hose is provided at the bottom center of the disc shell; the bottom of the connecting hose is connected to an inflation joint; a second regulating chamber is provided in the disc shell; a connecting pipe is provided in the second regulating chamber; the top of the connecting pipe is connected to several groups of connecting grooves, and the bottom is connected to the connecting hose.

[0013] Furthermore, the tire support mechanism includes several groups of support rings which are sequentially socketed; the bottom of each group of the support rings is transmission-connected to the output ends of the corresponding groups of second electric push rods; and the inner walls of each group of the support rings except the center are provided with several groups of storage grooves in a circular array.

[0014] Furthermore, a group of rotating plates are provided in each group of the storage grooves; a group of cleaning brushes are provided at the end of each group of the rotating plates away from the rotating axis; a group of distance sensors are provided on the bottom inner wall of each group of the support rings except the center; each group of the distance sensors is located below the corresponding groups of the storage grooves.

[0015] Furthermore, the detection marking mechanism includes a support plate; two groups of mounting plates are arranged in parallel on a side wall of the support plate close to the tire support mechanism; the two groups of mounting plates support a plurality of detection plates; and the plurality of detection plates are damped and hinged together in sequence.

[0016] Furthermore, a plurality of groups of third electric push rods are symmetrically and evenly spaced on the opposite side walls of the two groups of mounting plates; the output end of each group of the third electric push rods extends between the two groups of mounting plates and is transmission-connected to a corresponding group of detection plates; a group of pressure sensors is provided on one side wall of each group of detection plates; and a plurality of groups of spray holes are opened on a side wall of each group of detection plates close to the pressure sensor.

[0017] Furthermore, a group of solenoid valves is provided on a side wall of each group of detection plates away from the pressure sensor; each group of solenoid valves is connected to a corresponding number of spray holes; a powder sprayer is provided on a side wall of the support plate away from the mounting plate; the output end of the powder sprayer is connected to a number of groups of solenoid valves.

[0018] A method for detecting an air tightness detection device for rubber tire production, the method comprising:

[0019] Place the rubber tire on top of the tire support mechanism;

[0020] Controlling the tire support mechanism to expose the hollow part of the rubber tire;

[0021] Controlling the tire limiting mechanism to fix the rubber tire through the hollow part of the rubber tire;

[0022] Control and detect the portion of the rubber tire where the marking mechanism is wrapped;

[0023] Control the tire limiting mechanism to drive the rubber tire to rotate;

[0024] The detection and marking mechanism marks the leaking point during the rotation of the rubber tire;

[0025] Complete the air tightness test of rubber tires.

[0026] The beneficial effects of the present invention are:

[0027] 1. By placing the rubber tire on the top of the tire support mechanism, then controlling the tire limiting mechanism to limit and fix the rubber tire, and then controlling the tire supporting mechanism to separate from the rubber tire, and then controlling the detection and marking mechanism to wrap a part of the rubber tire, and then controlling the tire limiting mechanism to drive the rubber tire to rotate, the detection and marking mechanism can detect the surface and mark the leaking part during the rotation of the rubber tire, which not only avoids the problem of time-consuming and easy omission of manual inspection, improves the efficiency of the inspection work, but also can accurately mark the leaking point, avoids the problem of no mark after the existing liquid inspection is dried and inconvenient for subsequent repair, and improves the use effect of the detection device.

[0028] 2. By controlling several groups of third electric push rods to drive several groups of detection plates to wrap around the outer wall of the rubber tire and reserve corresponding gaps, since the tire rotates during the detection process, the airflow ejected from the leaking point causes the pressure data of the pressure sensor to be parabolic. At the peak position, the corresponding solenoid valve will open the powder sprayer to spray out marking powder through the corresponding solenoid valve and several groups of spray holes. Since it is a powdery marker, airflow will be ejected at the leaking point to prevent the powder from adhering, and the powder will only be marked at the edge of the leaking point, thereby achieving precise marking positioning, and being able to perform airtightness detection on rubber tires of different sizes, thereby improving the compatibility of the detection device.

[0029] 3. During the detection process, the variable frequency air pump is connected with several groups of connecting grooves through the telescopic tube and the connecting ring in turn, and the several groups of connecting grooves are connected with the inflation joints through the connecting tube and the connecting hose in turn. The variable frequency air pump continuously inflates the rubber tire through the above-mentioned connection relationship during the detection process, and can automatically change the power to avoid excessive air pressure in the rubber tire, thereby avoiding the problem that some leakage points cannot be detected after the air pressure in the tire decreases after a one-time inflation in the existing detection method, thereby improving the detection quality of the detection device.

[0030] 4. By controlling several groups of limiting posts to move through the hollow part of the rubber tire, the inflation joint is connected to the rubber tire to inflate, and then several groups of limiting posts are controlled to move in a direction away from the central axis of the disc shell, so that one edge of the several groups of limiting posts is in contact with the inner wall of the rubber tire. Since several groups of limiting grooves are evenly spaced on the contact edges of the limiting posts and the rubber tire to form a toothed structure, the elasticity of the rubber tire is used to limit the rubber tire and prevent it from being displaced during the detection process, which not only improves the convenience of use of the detection device, but also improves the detection stability of the detection device.

[0031] Other features and advantages of the present invention will be described in the following description, and partly become apparent from the description, or understood by practicing the present invention. The purpose and other advantages of the present invention can be realized and obtained by the structures pointed out in the description, claims and drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0033] Figure 1 A schematic diagram of the structure of a detection device according to an embodiment of the present invention is shown;

[0034] Figure 2 It shows a right side cross-sectional schematic diagram of a detection device according to an embodiment of the present invention;

[0035] Figure 3 A schematic diagram of the top view of the tire limiting mechanism according to an embodiment of the present invention is shown;

[0036] Figure 4 A bottom view structural diagram of a tire limiting mechanism according to an embodiment of the present invention is shown;

[0037] Figure 5 A schematic top cross-sectional view of a tire limiting mechanism according to an embodiment of the present invention is shown;

[0038] Figure 6 A schematic diagram showing the structure of a tire support mechanism according to an embodiment of the present invention is shown.

[0039] Figure 7 It shows a schematic structural diagram of a detection marking mechanism according to an embodiment of the present invention;

[0040] Figure 8 The embodiment of the present invention is shown Figure 6 An enlarged schematic diagram of point A.

[0041] In the figure: 1, detection platform; 2, electric slide; 3, support column; 4, cross plate; 5, first electric push rod; 6, first motor; 7, tire limit mechanism; 8, connecting ring; 9, variable frequency air pump; 10, telescopic tube; 11, tire support mechanism; 12, first slide; 13, detection mark mechanism; 14, telescopic slot; 15, second electric push rod; 16, first adjustment chamber; 17, first screw rod; 18, first slider; 19, second motor; 701, disc shell; 702, connecting slot; 703, limit column; 704, second slide; 705, Connecting hose; 706, inflation connector; 707, second regulating chamber; 708, connecting pipe; 709, third motor; 710, second screw rod; 711, second slider; 712, limiting groove; 1101, support ring; 1102, storage slot; 1103, rotating plate; 1104, cleaning brush; 1105, distance sensor; 1301, support plate; 1302, mounting plate; 1303, detection plate; 1304, third electric push rod; 1305, powder sprayer; 1306, pressure sensor; 1307, solenoid valve; 1308, spray hole. DETAILED DESCRIPTION

[0042] In order to make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the technical solution in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0043] The embodiment of the present invention provides an air tightness detection device for rubber tire production, comprising a detection platform 1. For example, Figure 1 and Figure 2As shown, two groups of electric slides 2 are symmetrically arranged at the edges of both sides of the top of the detection platform 1; two groups of support columns 3 are transmission-connected on the output ends of the two groups of electric slides 2; a cross plate 4 is arranged on the top of the two groups of support columns 3; a first electric push rod 5 is arranged at the top center of the cross plate 4; the first electric push rod 5 extends to the bottom of the cross plate 4 and is transmission-connected with a first motor 6; a tire limiting mechanism 7 is transmission-connected on the output end of the first motor 6; a connecting ring 8 is sleeved on the outer wall of the tire limiting mechanism 7; the bottom of the connecting ring 8 is movably fitted on the top of the tire limiting mechanism 7 and is connected with the tire limiting mechanism 7; a variable frequency air pump 9 is arranged on the top of the cross plate 4; the output end of the variable frequency air pump 9 extends to the bottom of the cross plate 4 and is connected with a telescopic tube 10; the end of the telescopic tube 10 away from the variable frequency air pump 9 is connected with the connecting ring 8; a telescopic slot 14 is opened on the top of the detection platform 1; A tire support mechanism 11 is movably penetrated in the telescopic slot 14; a plurality of groups of second electric push rods 15 are provided at the bottom of the telescopic slot 14; the output ends of the plurality of groups of second electric push rods 15 are all transmission-connected with the tire support mechanism 11; a first slide slot 12 is provided at one side edge of the top of the detection platform 1; a detection marking mechanism 13 is provided in the first slide slot 12; a first adjusting chamber 16 is provided in the detection platform 1; a first screw rod 17 is provided in the first adjusting chamber 16; the two ends of the first screw rod 17 are respectively rotatably connected to the inner walls on both sides of the first adjusting chamber 16; a first slider 18 is slidably connected to the bottom of the first adjusting chamber 16; the first slider 18 is threadedly connected to the first screw rod 17; the first slider 18 is transmission-connected with the detection marking mechanism 13; a second motor 19 is provided on one side wall of the detection platform 1; the output end of the second motor 19 is transmission-connected with the first screw rod 17.

[0044] When performing the air tightness test of the rubber tire, first place the rubber tire on the top of the tire support mechanism 11, then control the two sets of electric slides 2 to drive the tire limiting mechanism 7 to move to the top of the rubber tire, then control the tire support mechanism 11 to expose the hollow part of the rubber tire, then control the first electric push rod 5 to drive the tire limiting mechanism 7 to move downward to the center of the rubber tire, then control the tire limiting mechanism 7 to limit and fix the rubber tire, then control the tire support mechanism 11 to completely retract into the telescopic slot 14 to make the bottom of the rubber tire suspended, and then control the second motor 19 to drive the first electric push rod 5 to move downward to the center of the rubber tire, and then control the second electric push rod 5 to drive the first electric push rod 5 to move downward to the center of the rubber tire, and then control the second electric push rod 5 to drive the first electric push rod 5 to move downward to the center of the rubber tire, and then control the second electric push rod 5 to drive the first electric push rod 5 to move upward ... The screw rod 17 rotates, and under the threaded connection relationship between the first screw rod 17 and the first slider 18, the first slider 18 drives the detection and marking mechanism 13 to wrap a part of the rubber tire, and then controls the first motor 6 to drive the rubber tire to rotate, so that the detection and marking mechanism 13 can perform air tightness detection on the surface of the rubber tire and mark the leaking parts at the same time, which not only avoids the problem of time-consuming and easy omission of manual detection, improves the efficiency of the detection work, but also can accurately mark the leaking points, avoids the problem of no mark after the existing liquid detection is dried and is inconvenient for subsequent repair, and improves the use effect of the detection device.

[0045] For example, Figure 3 , Figure 4 and Figure 5As shown, the tire limiting mechanism 7 includes a disc shell 701; a plurality of groups of connecting grooves 702 are arranged in a circular array on the top of the disc shell 701; a plurality of groups of connecting grooves 702 are connected to the connecting ring 8; a plurality of groups of second slide grooves 704 are arranged in a circular array on the bottom of the disc shell 701; a group of limiting posts 703 are arranged in each group of the second slide grooves 704; each group of limiting posts 703 are triangular prisms; a plurality of groups of limiting grooves 712 are arranged at equal intervals on the edges of each group of limiting posts 703 away from the central axis of the disc shell 701; a connecting hose 705 is arranged at the bottom center of the disc shell 701; an inflation joint 706 is connected to the bottom of the connecting hose 705; a second regulating chamber 707 is arranged in the disc shell 701; the second regulating chamber 707 is arranged in the disc shell 701; A connecting pipe 708 is provided in the cavity 707; the top of the connecting pipe 708 is connected to a plurality of connecting grooves 702, and the bottom is connected to a connecting hose 705; a plurality of third motors 709 are provided in a circular array on the side inner wall of the second regulating cavity 707; a plurality of second screw rods 710 are transmission-connected to the output end of each group of the third motors 709; the other end of each group of the second screw rods 710 is rotationally connected to the outer wall of the connecting pipe 708; a plurality of second sliders 711 are slidingly connected in a circular array on the bottom inner wall of the second regulating cavity 707; each group of the second sliders 711 is threadedly connected to a corresponding group of the second screw rods 710; each group of the second sliders 711 is located directly above a corresponding group of the second slide grooves 704, and is transmission-connected to a corresponding group of the limiting columns 703.

[0046] When the rubber tire is limiting, several groups of limiting posts 703 are controlled to move through the hollow part of the rubber tire, and then the inflation joint 706 is connected to the rubber tire for inflation, and then several groups of third motors 709 are controlled to drive several groups of second screw rods 710 to rotate. Under the threaded connection relationship between the second screw rod 710 and the second slider 711, several groups of second sliders 711 drive several groups of limiting posts 703 to move in a direction away from the central axis of the disc shell 701, so that one edge of several groups of limiting posts 703 is against the inner wall of the rubber tire. Since several groups of limiting grooves 712 are evenly spaced on the contact edges of the limiting posts 703 and the rubber tire to form a toothed structure, the elasticity of the rubber tire is used to limit the rubber tire and prevent it from being displaced during the detection process, which not only improves the convenience of use of the detection device, but also improves the detection stability of the detection device. At the same time, during the detection process, the variable frequency air pump 9 is connected with several groups of connecting grooves 702 through the telescopic tube 10 and the connecting ring 8 in turn, and several groups of connecting grooves 702 are connected with the inflation joint 706 through the connecting tube 708 and the connecting hose 705 in turn. The variable frequency air pump 9 continuously inflates the rubber tire during the detection process through the above-mentioned connection relationship, and can automatically change the power to avoid excessive air pressure in the rubber tire, thereby avoiding the problem that some leakage points cannot be detected after the air pressure in the tire is reduced after a one-time inflation in the existing detection method, thereby improving the detection quality of the detection device.

[0047] For example, Figure 6 As shown, the tire support mechanism 11 includes a plurality of groups of support rings 1101 which are sequentially sleeved; the bottom of each group of the support rings 1101 is transmission-connected to the output ends of the corresponding plurality of second electric push rods 15; the inner walls of each group of the support rings 1101 except the one at the center are provided with a plurality of groups of receiving grooves 1102 in a circular array; a group of rotating plates 1103 are provided in each group of the receiving grooves 1102; a group of cleaning brushes 1104 are provided at the end of each group of the rotating plates 1103 away from the rotating shaft; a group of distance sensors 1105 are provided on the inner walls of the bottom of each group of the support rings 1101 except the one at the center; each group of the distance sensors 1105 are located below the corresponding plurality of receiving grooves 1102.

[0048] When conducting the air tightness test of the rubber tire, the tire is placed on the top of several groups of support rings 1101, and then the corresponding several groups of second electric push rods 15 are controlled to drive the corresponding several groups of support rings 1101 to descend, so that the hollow part of the rubber tire is exposed to facilitate the fixation of the rubber tire. When the air tightness test of the rubber tire is completed, the corresponding several groups of support rings 1101 can be controlled to shrink, leaving only one group of support rings 1101 with an inner diameter larger than the outer diameter of the rubber tire, and then the disc shell 701 is controlled to contact the top of the support ring 1101, so that the disc shell 701, the support ring 1101 and the telescopic groove 14 form a closed space, and the air pressure change in the closed space is monitored to determine whether there is leakage in the detection blind area of ​​the rubber tire, thereby further improving the detection effect of the detection device. When the detection is completed and there is no leakage point in the rubber tire, the corresponding support ring 1101 can be controlled to descend, so that the corresponding distance sensor 1105 is exposed, and the distance sensor 1105 will send a signal to control the corresponding several groups of rotating plates 1103 to drive the cleaning brush 1104 to move out and contact the outer wall of the rubber tire, and then control the tire limiting mechanism 7 to drive the rubber tire to rotate, so that several groups of cleaning brushes 1104 clean the rubber tire, which is convenient for subsequent processing and improves the cleaning efficiency of the rubber tire.

[0049] For example, Figure 7 and Figure 8 As shown, the detection marking mechanism 13 includes a support plate 1301; two groups of mounting plates 1302 are parallelly arranged on a side wall of the support plate 1301 close to the tire support mechanism 11; the two groups of mounting plates 1302 support a plurality of detection plates 1303; the plurality of detection plates 1303 are damped and hinged together in sequence; a plurality of third electric push rods 1304 are symmetrically and evenly spaced on the opposite side walls of the two groups of mounting plates 1302; the output end of each group of the third electric push rods 1304 extends between the two groups of mounting plates 1302, and is transmission-connected to a corresponding group of detection plates 1303; A group of pressure sensors 1306 are provided on one side wall of each group of the detection plates 1303; a plurality of spray holes 1308 are provided on a side wall of each group of the detection plates 1303 close to the pressure sensor 1306; a group of solenoid valves 1307 are provided on a side wall of each group of the detection plates 1303 away from the pressure sensor 1306; each group of the solenoid valves 1307 are connected with corresponding groups of spray holes 1308; a powder sprayer 1305 is provided on a side wall of the support plate 1301 away from the mounting plate 1302; the output end of the powder sprayer 1305 is connected with a plurality of groups of solenoid valves 1307.

[0050] When conducting air tightness testing of a rubber tire, a portion of the rubber tire is located between several groups of testing plates 1303, and then several groups of third electric push rods 1304 are controlled to drive several groups of testing plates 1303 to wrap around the outer wall of the rubber tire and reserve corresponding gaps. Since the tire rotates during the testing process, the airflow ejected from the leaking point causes the pressure data of the pressure sensor 1306 to be parabolic. At the peak position, the corresponding solenoid valve 1307 will open the powder sprayer 1305 to spray marking powder through the corresponding solenoid valve 1307 and several groups of spray holes 1308. Since it is a powdery marker, airflow will be ejected at the leaking point to prevent the powder from adhering, and the powder will only be marked at the edge of the leaking point, thereby achieving precise marking positioning, and being able to perform air tightness testing on rubber tires of different sizes, thereby improving the compatibility of the detection device.

[0051] By placing the rubber tire on the top of the tire supporting mechanism 11, then controlling the tire limiting mechanism 7 to limit and fix the rubber tire, and then controlling the tire supporting mechanism 11 to separate from the rubber tire, and then controlling the detection marking mechanism 13 to wrap a part of the rubber tire, and then controlling the tire limiting mechanism 7 to drive the rubber tire to rotate, the detection marking mechanism 13 can detect the surface and mark the leaking part during the rotation of the rubber tire, which not only avoids the problem that manual inspection is time-consuming and easy to miss, improves the efficiency of the inspection work, but also can accurately mark the leaking point, avoids the problem that the existing liquid inspection has no mark after drying and is inconvenient for subsequent repair, and improves the use effect of the detection device.

[0052] By controlling several groups of third electric push rods 1304 to drive several groups of detection plates 1303 to wrap around the outer wall of the rubber tire and reserve corresponding gaps, since the tire rotates during the detection process, the airflow ejected from the leakage point causes the pressure data of the pressure sensor 1306 to be parabolic, and the corresponding solenoid valve 1307 at the peak position will open the powder sprayer 1305 to spray out marking powder through the corresponding solenoid valve 1307 and several groups of spray holes 1308. Since it is a powdery marker, airflow will be ejected at the leakage point to prevent the powder from adhering, and the powder will only be marked at the edge of the leakage point, thereby achieving precise marking positioning, and being able to perform air tightness detection on rubber tires of different sizes, thereby improving the compatibility of the detection device.

[0053] During the detection process, the variable frequency air pump 9 is connected with several groups of connecting grooves 702 through the telescopic tube 10 and the connecting ring 8 in turn, and several groups of connecting grooves 702 are connected with the inflation joint 706 through the connecting tube 708 and the connecting hose 705 in turn. The variable frequency air pump 9 continuously inflates the rubber tire during the detection process through the above-mentioned connection relationship, and can automatically change the power to avoid excessive air pressure in the rubber tire, thereby avoiding the problem that some leakage points cannot be detected after the air pressure in the tire is reduced after a one-time inflation in the existing detection method, thereby improving the detection quality of the detection device.

[0054] By controlling the movement of several groups of limiting posts 703 to penetrate into the hollow part of the rubber tire, and then connecting the inflation joint 706 with the rubber tire for inflation, and then controlling the several groups of limiting posts 703 to move in a direction away from the central axis of the disc shell 701, one of the edges of the several groups of limiting posts 703 is made to abut against the inner wall of the rubber tire. Since several groups of limiting grooves 712 are evenly spaced on the contact edges between the limiting posts 703 and the rubber tire to form a tooth-like structure, the elasticity of the rubber tire is used to limit the rubber tire and prevent it from being displaced during the detection process, which not only improves the convenience of use of the detection device, but also improves the detection stability of the detection device.

[0055] Based on the above-mentioned air tightness detection device for rubber tire production, the embodiment of the present invention further proposes a detection method for the air tightness detection device for rubber tire production. Exemplarily, the detection method includes:

[0056] Place the rubber tire on top of the tire support mechanism;

[0057] Controlling the tire support mechanism to expose the hollow part of the rubber tire;

[0058] Controlling the tire limiting mechanism to fix the rubber tire through the hollow part of the rubber tire;

[0059] Control and detect the portion of the rubber tire where the marking mechanism is wrapped;

[0060] Control the tire limiting mechanism to drive the rubber tire to rotate;

[0061] The detection and marking mechanism marks the leaking point during the rotation of the rubber tire;

[0062] Complete the air tightness test of rubber tires.

[0063] Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent substitutions for some of the technical features therein; and these modifications or substitutions do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. An air tightness detection device for rubber tire production, comprising a detection platform (1), characterized in that: Two groups of electric slides (2) are symmetrically arranged at the edges of both sides of the top of the detection platform (1); two groups of support columns (3) are transmission-connected on the output ends of the two groups of electric slides (2); and horizontal plates (4) are arranged on the tops of the two groups of support columns (3); A first electric push rod (5) is provided at the top center of the transverse plate (4); the first electric push rod (5) extends to the bottom of the transverse plate (4) and is transmission-connected to a first motor (6); a tire limiting mechanism (7) is transmission-connected to the output end of the first motor (6); The top of the detection platform (1) is provided with a telescopic groove (14); a tire support mechanism (11) is movably penetrated in the telescopic groove (14); a first slide groove (12) is provided at a side edge of the top of the detection platform (1); a detection marking mechanism (13) is provided in the first slide groove (12); The tire support mechanism (11) is controlled to expose the hollow portion of the rubber tire, making it easier for the tire limiting mechanism (7) to fix the rubber tire from the hollow portion.

2. The air tightness detection device for rubber tire production according to claim 1, characterized in that: A connecting ring (8) is sleeved on the outer wall of the tire limiting mechanism (7); the bottom of the connecting ring (8) is movably fitted on the top of the tire limiting mechanism (7) and is connected to the tire limiting mechanism (7); a variable frequency air pump (9) is provided on the top of the transverse plate (4); the output end of the variable frequency air pump (9) extends to the bottom of the transverse plate (4) and is connected to a telescopic tube (10); the end of the telescopic tube (10) away from the variable frequency air pump (9) is connected to the connecting ring (8); a plurality of groups of second electric push rods (15) are provided at the bottom of the telescopic groove (14); the output ends of the plurality of groups of the second electric push rods (15) are all transmission-connected to the tire supporting mechanism (11).

3. The air tightness detection device for rubber tire production according to claim 1, characterized in that: The tire limiting mechanism (7) comprises a disc shell (701); a plurality of groups of communicating grooves (702) are arranged in a circular array on the top of the disc shell (701); the plurality of groups of communicating grooves (702) are connected to a connecting ring (8); a plurality of groups of second sliding grooves (704) are arranged in a circular array on the bottom of the disc shell (701); a group of limiting columns (703) is arranged in each group of the second sliding grooves (704); each group of the limiting columns (703) is a triangular prism; a plurality of groups of limiting grooves (712) are arranged at equal intervals on the edges of each group of the limiting columns (703) away from the central axis of the disc shell (701).

4. The air tightness detection device for rubber tire production according to claim 3, characterized in that: A connecting hose (705) is provided at the bottom center of the disc shell (701); the bottom of the connecting hose (705) is connected to an inflation joint (706); a second regulating chamber (707) is provided in the disc shell (701); a connecting pipe (708) is provided in the second regulating chamber (707); the top of the connecting pipe (708) is connected to a plurality of groups of connecting grooves (702), and the bottom is connected to the connecting hose (705).

5. The air tightness detection device for rubber tire production according to claim 2, characterized in that: The tire support mechanism (11) comprises a plurality of groups of support rings (1101) which are sleeved in sequence; the bottom of each group of the support rings (1101) is transmission-connected to the output ends of the corresponding plurality of groups of second electric push rods (15); and the inner wall of each group of the support rings (1101) except the one at the center is provided with a plurality of groups of receiving grooves (1102) in a circular array.

6. The air tightness detection device for rubber tire production according to claim 5, characterized in that: A group of rotating plates (1103) is provided in each group of the storage grooves (1102); a group of cleaning brushes (1104) is provided at one end of each group of the rotating plates (1103) away from the rotating shaft; a group of distance sensors (1105) is provided on the inner wall of the bottom of each group of the support rings (1101) except the one at the center; each group of the distance sensors (1105) is located below the corresponding groups of the storage grooves (1102).

7. The air tightness detection device for rubber tire production according to claim 1, characterized in that: The detection marking mechanism (13) comprises a support plate (1301); two groups of mounting plates (1302) are arranged in parallel on a side wall of the support plate (1301) close to the tire support mechanism (11); the two groups of mounting plates (1302) support a plurality of detection plates (1303); and the plurality of detection plates (1303) are hingedly connected together in sequence with damping.

8. The air tightness detection device for rubber tire production according to claim 7, characterized in that: A plurality of groups of third electric push rods (1304) are symmetrically and evenly spaced on opposite side walls of the two groups of mounting plates (1302); the output end of each group of the third electric push rods (1304) extends between the two groups of mounting plates (1302) and is transmission-connected to a corresponding group of detection plates (1303); a group of pressure sensors (1306) are provided on a side wall of each group of detection plates (1303); and a plurality of groups of spray holes (1308) are opened on a side wall of each group of detection plates (1303) close to the pressure sensors (1306).

9. The air tightness detection device for rubber tire production according to claim 8, characterized in that: A group of solenoid valves (1307) are provided on a side wall of each group of the detection plates (1303) away from the pressure sensor (1306); each group of the solenoid valves (1307) are connected to a corresponding number of spray holes (1308); a powder sprayer (1305) is provided on a side wall of the support plate (1301) away from the mounting plate (1302); the output end of the powder sprayer (1305) is connected to a number of groups of solenoid valves (1307).

10. A detection method based on the air tightness detection device for rubber tire production according to any one of claims 1 to 9, characterized in that: The detection method comprises: Place the rubber tire on top of the tire support mechanism; Controlling the tire support mechanism to expose the hollow part of the rubber tire; Controlling the tire limiting mechanism to fix the rubber tire through the hollow part of the rubber tire; Control and detect the portion of the rubber tire where the marking mechanism is wrapped; Control the tire limiting mechanism to drive the rubber tire to rotate; The detection and marking mechanism marks the leaking point during the rotation of the rubber tire; Complete the air tightness test of rubber tires.

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