A device for detecting defects in the mouth of an inner tube

Abstract

The utility model discloses a tire tube nozzle flaw detection device, by feeding device, transfer device, detection conveying device and detection device constitute. Feeding device utilizes the oblique bottom support plate and side slide, with the help of gravity makes nozzle to slide to the blanking groove, and waits for transfer, and the transfer device is accurate to snatch nozzle and removes to the belt of detection conveying device with double -end cylinder, lift cylinder and clamping jaw cylinder etc. Detection conveying device stably sends nozzle to the detection device. Detection device is with electromagnetic induction as principle, and the alternating magnetic field of electrified coil generates, and cooperates the metal core rod of flexible movement, and detects the nozzle in the tool, and the support side plate of tool and the limiting recess ensure that nozzle is stable. The utility model discloses realized automatic high -efficient feeding, accurate flaw detection, can effectively improve tire tube nozzle detection efficiency and quality, guarantee tire tube product overall performance, is applicable to various tire tube production enterprises.

Description

Technical Field

[0001] This utility model relates to the technical field of inner tube production equipment, specifically to an inner tube nozzle flaw detection device. Background Technology

[0002] The quality of the inner tube valve plays a crucial role in the performance and lifespan of the inner tube. Traditional inspection methods rely heavily on visual means, using the human eye or simple optical instruments to observe the appearance, which can detect problems such as surface scratches, stains, deformation, and color differences, thus controlling the initial quality of the product to a certain extent.

[0003] Due to factors such as raw materials, casting, and processing technology, inner tube nozzles are prone to hidden defects such as micro-cracks and sand holes. These defects cannot be detected by the naked eye or ordinary optical equipment because it is difficult to penetrate the solid structure to capture internal flaws.

[0004] If a nozzle with internal defects is mistakenly put into use, cracks may expand due to changes in working conditions, causing the inner tube to leak air. Sand holes may form leakage channels, reducing the reliability and safety of the inner tube, increasing the scrap rate, and causing economic losses. Summary of the Invention

[0005] (a) Technical problems to be solved The technical problem this invention aims to solve is that the inner tube nozzle is prone to hidden defects such as micro-cracks and sand holes due to the influence of raw materials, casting and processing technology. These internal structural defects cannot be detected by the naked eye or traditional optical equipment.

[0006] (II) Technical Solution To solve the above problems, this utility model provides the following technical solution: An inner tube nozzle flaw detection device includes a feeding device, a transfer device, a detection conveying device, and a detection device. The feeding device is used to transport the nozzle to be inspected to the position of the transfer device. The transfer device is used to transfer the nozzle from the feeding device to the detection conveying device, and then the nozzle is transported to the detection device for inspection. The detection device includes a detection base, a gear shaft, a vertical shaft dual-output shaft reducer, a handwheel, a slide bar, a linear slide block, a movable housing, a coil, a metal core rod, a core rod connecting shaft, and a control box. The gear shaft and the slide rod are symmetrically arranged on the detection base, and one end of each is connected to the detection base through a clamping seat, and the other end is connected to the control box. The moving housing is connected to the gear shaft and the slide rod through the linear slide. The vertical shaft dual-output shaft reducer is arranged in the moving housing, and one of them meshes with the gear shaft through a gear, while the other output shaft extends to the outside of the moving housing and is connected to the handwheel. One end of the mandrel connecting shaft is connected to the moving housing, and the other end is connected to the metal mandrel through a connecting flange. The coil is arranged on the outer ring of the metal mandrel.

[0007] Furthermore, the transfer device includes a cylinder mounting plate, a double-headed cylinder, an L-shaped connecting plate, a linear guide pair, a lifting cylinder, a gripper cylinder, a translation gripper, and a connecting angle iron. The cylinder mounting plate is disposed on the side of the frame of the detection and transfer device, and the telescopic rods on both sides of the double-headed cylinder are respectively connected to the cylinder mounting plate. The L-shaped connecting plate is fixedly connected to the cylinder body of the double-headed cylinder, and the linear guide pair is disposed on the L-shaped connecting plate, with its slider fixedly connected to the connecting angle iron. The cylinder body of the lifting cylinder is fixedly connected to the L-shaped connecting plate, and its telescopic rod is inherently connected to the connecting angle iron. The gripper cylinder has two symmetrically arranged on both sides of the connecting angle iron, and each gripper cylinder has a translation gripper on its gripper.

[0008] Furthermore, the feeding device includes a bracket, an inclined bottom plate, and a side slide plate. The bracket is disposed on one side of the transfer device, the bottom plate is fixedly disposed on the upper part of the bracket, and the height of the bottom plate near the transfer device is lower than the horizontal height of the other end. The side slide plate is fixedly disposed on the side of the bottom plate, and both the upper and lower ends of the side slide plate are provided with grooves to facilitate the sliding of the nozzle. Both the bottom plate and the side slide plate near the transfer device are provided with a recessed V-shaped nozzle discharge groove.

[0009] Furthermore, the detection conveyor is a belt conveyor and is positioned between the transfer device and the detection device.

[0010] Furthermore, the detection device is also equipped with a fixture for supporting the nozzle. The fixture includes a base plate, two symmetrically arranged supporting side plates fixedly connected to the base plate, and each side plate has a limiting groove on its upper surface.

[0011] Furthermore, the side slide plate is also provided with an anti-fall baffle at one end near the transfer device.

[0012] (III) Beneficial Effects The beneficial effects of this utility model are: 1. The feeding device cleverly utilizes gravity by incorporating the inclined design of the base plate and the nozzle drop chute to guide the nozzles to automatically converge at the designated position. In conjunction with the coordinated operation of the double-headed cylinder, lifting cylinder, gripper cylinder, and related components in the transfer device, it achieves precise and rapid gripping and transfer of nozzles from feeding to inspection and conveying. This eliminates the need for manual operation of each nozzle individually, greatly improving feeding efficiency, adapting to the needs of large-scale production, and effectively saving labor and time costs.

[0013] 2. The detection device is based on the principle of electromagnetic induction. The alternating magnetic field generated by the energized coil can perform detailed flaw detection on the inner tube nozzle. The adjustment system, consisting of a vertical axis dual-output shaft reducer, gear shaft, slide bar, and moving housing, ensures that the metal mandrel accurately approaches or moves away from the nozzle, whether manually operated via a handwheel or automatically controlled by a control box, thus accurately positioning the detection area. Attached Figure Description

[0014] Figure 1 This is a perspective view of the present invention; Figure 2 This is a schematic diagram of the feeding device of this utility model. Figure 1 ; Figure 3 This is a schematic diagram of the feeding device of this utility model. Figure 2 ; Figure 4 This is a schematic diagram of the feeding device of this utility model. Figure 3 ; Figure 5 This is a schematic diagram of the transfer device of this utility model; Figure 6 This is a perspective view of the detection device of this utility model; Figure 7 This is a cross-sectional view of the detection device of this utility model; Figure 8 This is a schematic diagram of the tooling of this utility model.

[0015] Markings in the diagram: 1-Feeding device, 101-Bracket, 102-Bottom plate, 103-Side slide plate, 104-Slide groove, 105-Nose discharge chute, 106-Anti-drop baffle; 2-Transfer device, 201-Cylinder mounting plate, 202-Double-head cylinder, 203-L-shaped connecting plate, 204-Linear guide pair, 205-Lifting cylinder, 206-Gripper cylinder, 207-Transfer gripper, 208-Connecting angle iron; 3- 4-Detection device, 401-Detection base, 402-Gear shaft, 403-Vertical axis double output shaft reducer, 404-Handwheel, 405-Slide rod, 406-Linear slide block, 407-Moving housing, 408-Coil, 409-Metal core rod, 410-Core rod connecting shaft, 411-Control box; 5-Tooling, 501-Base plate, 502-Supporting side plate, 503-Limiting groove, 6-Nose body. Detailed Implementation

[0016] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0017] In the description of this utility model, it should be understood that the terms "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", and "outer" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0018] Please see Figure 1 The device shown is an inner tube nozzle flaw detection device, comprising a feeding device 1, a transfer device 2, a detection and conveying device 3, and a detection device 4. The feeding device is used to transport the nozzle to be detected to the position of the transfer device 2. The transfer device 2 is used to transfer the nozzle from the feeding device 1 to the detection and conveying device 3, and then to the detection device 4 for detection.

[0019] Please see Figures 2-4The feeding device 1 is used to convey the nozzles to be inspected to the transfer device 2. It includes a bracket 101, an inclined base plate 102, and a side slide plate 103. The bracket 101 is located on one side of the transfer device 2, providing support for the entire feeding structure. The base plate 102 is fixedly mounted on the upper part of the bracket 101, and the height of the end of the base plate 102 near the transfer device 2 is lower than the horizontal height of the other end. This inclined design utilizes gravity to allow the nozzles to slide automatically towards the transfer device 2. The side slide plate 103 is fixedly mounted on the side of the base plate 102, providing lateral restraint for the nozzles. Both the upper and lower ends of the side slide plate 103 are provided with grooves 104 to facilitate smooth nozzle sliding and reduce frictional resistance. Both the base plate 102 and the side slide plate 103 near the transfer device 2 are provided with a recessed V-shaped nozzle drop chute 105, which can accurately position the nozzles for easy gripping by the transfer device 2. In addition, the side slide plate 103 is provided with an anti-drop baffle 106 at the end near the transfer device 2 to prevent the nozzle from falling off accidentally before transfer and to ensure the stability of feeding.

[0020] Please see Figure 1 , Figure 4 and Figure 5 The transfer device 2 is used to transfer the nozzles conveyed by the feeding device 1 to the inspection and transfer device 3. It includes a cylinder mounting plate 201, a double-headed cylinder 202, an L-shaped connecting plate 203, a linear guide pair 204, a lifting cylinder 205, a gripper cylinder 206, a translation gripper 207, and a connecting angle iron 208. The cylinder mounting plate 201 is located on the side of the frame of the inspection and transfer device 3, providing a mounting base for the double-headed cylinder 202. The telescopic rods on both sides of the double-headed cylinder 202 are connected to the cylinder mounting plate 201 to achieve horizontal telescopic movement. The L-shaped connecting plate 203 is fixedly connected to the cylinder body of the double-headed cylinder 202. The linear guide pair 204 is located on the L-shaped connecting plate 203, and its slider is fixedly connected to the connecting angle iron 208, ensuring the stability of the connecting angle iron 208 during movement. The cylinder body of the lifting cylinder 205 is fixedly connected to the L-shaped connecting plate 203, and its telescopic rod is inherently connected to the connecting angle iron 208, used to realize vertical lifting action. The gripper cylinder 206 has two symmetrically arranged on both sides of the connecting angle iron 208. Each gripper cylinder 206 has a translation gripper 207 on its gripper. By controlling the opening and closing of the translation gripper 207 through the gripper cylinder 206, the nozzle at the material drop chute 105 can be gripped, and under the cooperative action of the double-headed cylinder 202 and the lifting cylinder 205, the nozzle is smoothly transferred to the detection and conveying device 3.

[0021] The inspection conveyor 3 uses a belt conveyor and is located between the transfer device 2 and the inspection device 4. Its function is to transport the nozzles sent by the transfer device 2 to the inspection device 4 for inspection. The belt conveyor can provide stable and continuous transport, ensuring that the nozzles enter the inspection stage in an orderly manner.

[0022] Please see Figures 6-8 The detection device 4, in conjunction with an externally connected detection instrument, is used to perform flaw detection on the inner tube nozzle. It includes a detection base 401, a gear shaft 402, a vertical shaft dual-output reducer 403, a handwheel 404, a slide rod 405, a linear slide block 406, a movable housing 407, a coil 408, a metal core rod 409, a core rod connecting shaft 410, and a control box 411. The gear shaft 402 and slide rod 405 are symmetrically arranged on the detection base 401, with one end of each connected to the detection base 401 via a clamping seat, and the other end connected to the control box 411, providing guidance and support for the movement of the movable housing 407. The movable housing 407 is connected to the gear shaft 402 and slide rod 405 via the linear slide block 406, ensuring smooth movement. A vertical axis dual-output shaft reducer 403 is housed within a movable housing 407. One output shaft meshes with a gear shaft 402 via a gear, while the other output shaft extends to the outside of the movable housing 407 and connects to a handwheel 404. The reducer 403 can be manually operated via the handwheel 404 or controlled by the control box 411, allowing the movable housing 407 to move along the gear shaft 402 and slide bar 405, thus achieving precise adjustment of the detection position. One end of the mandrel connecting shaft 410 is connected to the movable housing 407, and the other end is connected to the metal mandrel 409 via a connecting flange, ensuring a stable connection between the metal mandrel 409 and the movable housing 407. A coil 408 is located around the outer ring of the metal mandrel 409. When the coil 408 is energized, it generates an alternating magnetic field, utilizing the principle of electromagnetic induction to detect defects such as cracks and pinholes inside the inner tube nozzle.

[0023] The testing device 4 is also equipped with a fixture 5 for supporting the nozzle. The fixture 5 includes a base plate 501 and two symmetrically arranged supporting side plates 502 fixedly connected to the base plate 501. Each side plate has a limiting groove 503 on its upper surface. During testing, the nozzle is placed on the fixture 5. The supporting side plates 502 and their limiting grooves 503 can effectively limit the nozzle, preventing displacement of the nozzle during testing and ensuring the accuracy of the test.

[0024] Working principle: The first step is the loading process. Numerous inner tube nozzles to be tested are placed on the feeding device 1. Utilizing gravity, the inclined base plate 102 of the feeding device 1 causes the nozzles to slide naturally down the groove 104 of the side slide plate 103, eventually landing in the nozzle drop trough 105, awaiting transfer. During this process, the anti-drop baffle 106 effectively prevents the nozzles from accidentally rolling away. Next, the transfer step begins. The transfer device 2 quickly starts. The double-headed cylinder 202 extends and retracts, causing the connected components to move horizontally and precisely position themselves above the nozzle drop trough 105. Simultaneously, the lifting cylinder 205 drives the connecting components to rise and fall vertically, bringing the translation gripper 207 to the appropriate height. Then, the gripper cylinder 206 controls the translation gripper 207 to steadily grasp the nozzle. Afterward, through the reverse cooperation of the double-headed cylinder 202 and the lifting cylinder 205, the nozzles are smoothly placed onto the fixture 5 on the belt of the testing conveyor device 3. The detection and conveying device 3 operates continuously, sequentially transferring the nozzles from the transfer device 2 to the detection device 4 area. When the nozzle arrives at the detection device 4, the core detection process of the detection device 4 is activated. The coil 408 is energized and immediately generates an alternating magnetic field, which tightly surrounds the metal core rod 409. By operating the vertical axis dual output shaft reducer 403, the handwheel 404 can be manually rotated for fine adjustment, or the control box 411 can be used for automated control, thereby driving the moving box 407 to move flexibly and move the metal core rod 409 to accurately approach the nozzle. Based on the principle of electromagnetic induction, when there are defects such as cracks or sand holes inside the nozzle, the original stable state of the magnetic field will be broken, causing changes in the magnetic field strength, distribution and other characteristics. The detection equipment connected to the coil (408) can keenly capture these subtle changes. After signal conversion and analysis, it can quickly determine whether the nozzle is qualified, and efficiently and accurately complete the flaw detection task of the inner tube nozzle. The embodiments are detailed, and the present invention can be implemented in other specific forms without departing from the spirit or essential characteristics of the present invention. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of the present invention is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within the present invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0025] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A device for detecting defects in inner tube nozzles, characterized in that: It includes a feeding device (1), a transfer device (2), a detection and conveying device (3), and a detection device (4); the feeding device (1) is used to transport the nozzle to be detected to the position of the transfer device (2), the transfer device (2) is used to transfer the nozzle transferred from the feeding device (1) to the detection and conveying device (3), and then transport it to the position of the detection device (4) for detection through the detection and conveying device (3); The detection device (4) includes a detection base (401), a gear shaft (402), a vertical shaft double output shaft reducer (403), a handwheel (404), a slide bar (405), a linear slide block (406), a movable housing (407), a coil (408), a metal core rod (409), a core rod connecting shaft (410), and a control box (411). The gear shaft (402) and the slide rod (405) are symmetrically arranged on the detection base (401), and one end of each is connected to the detection base (401) through a clamping seat, and the other end is connected to the control box (411). The movable housing (407) is connected to the gear shaft (402) and the slide rod (405) through the linear slide (406). The vertical shaft double output shaft reducer (403) is arranged in the movable housing (407), and one of them meshes with the gear shaft (402) through a gear, and the other output shaft extends to the outside of the movable housing (407) and is connected to the handwheel (404). One end of the core rod connecting shaft (410) is connected to the movable housing (407), and the other end is connected to the metal core rod (409) through a connecting flange. The coil (408) is arranged on the outer ring of the metal core rod (409).

2. The inner tube nozzle flaw detection device according to claim 1, characterized in that: The transfer device (2) includes a cylinder mounting plate (201), a double-headed cylinder (202), an L-shaped connecting plate (203), a linear guide pair (204), a lifting cylinder (205), a gripper cylinder (206), a translation gripper (207), and a connecting angle iron (208). The cylinder mounting plate (201) is located on the side of the frame of the detection and transfer device (3), and the telescopic rods on both sides of the double-headed cylinder (202) are respectively connected to the cylinder mounting plate (201). The L-shaped connecting plate (203) is connected to the double-headed cylinder (204). 2) The cylinder body is fixedly connected, and the linear guide pair (204) is set on the L-shaped connecting plate (203), its slider is fixedly connected to the connecting angle iron (208), the cylinder body of the lifting cylinder (205) is fixedly connected to the L-shaped connecting plate (203), its telescopic rod is inherently connected to the connecting angle iron (208), and the gripper cylinder (206) has two symmetrically arranged on both sides of the connecting angle iron (208), and each gripper cylinder (206) has a translation gripper (207) on its gripper.

3. The inner tube nozzle flaw detection device according to claim 2, characterized in that: The feeding device (1) includes a bracket (101), an inclined bottom plate (102), and a side slide plate (103). The bracket (101) is located on one side of the transfer device (2). The bottom plate (102) is fixedly located on the upper part of the bracket (101). The height of the bottom plate (102) near the transfer device (2) is lower than the horizontal height of the other end. The side slide plate (103) is fixedly located on the side of the bottom plate (102). The upper and lower ends of the side slide plate (103) are provided with grooves (104) to facilitate the sliding of the nozzle. The bottom plate (102) and the side slide plate (103) are both provided with a sunken V-shaped nozzle discharge groove (105) near the transfer device (2).

4. The inner tube nozzle flaw detection device according to claim 1, characterized in that: The detection conveyor (3) is a belt conveyor and is located between the transfer device (2) and the detection device (4).

5. The inner tube nozzle flaw detection device according to claim 1, characterized in that: The detection device (4) is also provided with a tooling (5) for supporting the nozzle. The tooling (5) includes a base plate (501), two symmetrically arranged supporting side plates (502) fixedly connected to the base plate (501), and each side plate has a limiting groove (503) on its upper surface.

6. The inner tube nozzle flaw detection device according to claim 3, characterized in that: The side slide plate (103) is also provided with a fall prevention baffle (106) at one end near the transfer device (2).

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