A thread detection device for a car tire locking nut

By designing an automated thread inspection device, which utilizes a vibratory feeder and sensors to automatically inspect nut threads, the problem of low efficiency in manual inspection is solved, achieving efficient and accurate nut thread inspection and meeting the needs of mass production.

CN224525344UActive Publication Date: 2026-07-21NINGBO CHANGHUA FUSERASHI CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
NINGBO CHANGHUA FUSERASHI CO LTD
Filing Date
2025-07-25
Publication Date
2026-07-21

AI Technical Summary

Technical Problem

The current thread inspection of automotive tire lock nuts mainly relies on manual visual inspection, which results in low inspection efficiency and cannot meet the needs of mass production. In addition, human factors can affect the accuracy and consistency of the inspection results.

Method used

An automated inspection device was designed, comprising a vibratory feeder, a discharge guide rail, a pusher cylinder, and a thread detection assembly. By detecting the thread of the nut through a sensor, and combining the design of the cover plate and the pusher block, automated feeding and rapid separation of qualified and unqualified products are achieved.

Benefits of technology

It significantly improves inspection efficiency, reduces labor costs, realizes the automation and high-efficiency production of nut thread inspection, and ensures the accuracy and consistency of inspection results.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model discloses a thread detection device for automobile tire locking nut, including the bottom plate, the one end upside of bottom plate is provided with the vibrating disk, and the vibrating disk is provided with the discharge guide rail at the discharge port, thread detection subassembly is provided in the position of the side department of bottom plate is close to first apron, and thread detection subassembly includes with the installation base that links to each other of bottom plate, and the first support column is detachably arranged on the installation base, the sliding block of up and down sliding adjustment is provided on the first support column, and the end portion of sliding block is detachably provided with the second support column, and the sensor installation block of slidable adjustment is provided on the second support column, and the side department of this sensor installation block is installed with the sensor for detecting through the bolt. The utility model can solve the problem that the prior art automobile tire locking nut adopts manual detection before the cap welding process, which leads to low detection efficiency, high labor cost and cannot meet mass production.
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Description

Technical Field

[0001] This utility model relates to the technical field of automotive component fixing devices, specifically a thread detection device for automotive tire locking nuts. Background Technology

[0002] As a key component ensuring the safe installation of car tires, the tire lock nut directly affects the safety of vehicle operation. If the presence of threads is not effectively checked before welding the tire lock nut to the cap, welding a defective nut without threads can lead to serious problems in subsequent assembly stages, wasting materials and time, and potentially creating safety hazards.

[0003] Traditional methods for inspecting the threads of automotive tire lock nuts mostly rely on manual visual inspection. This method is not only inefficient but also susceptible to human error, making it difficult to guarantee the accuracy and consistency of the inspection results, and thus unsuitable for mass production. To ensure the quality of automotive tire lock nuts before welding to the cap and to improve inspection efficiency and accuracy, designing a dedicated thread inspection device for automotive tire lock nuts is of significant practical importance. Utility Model Content

[0004] This invention provides a thread inspection device for automotive tire lock nuts, which solves the problem that existing automotive tire lock nuts are mostly inspected manually before the welding process with the cap, resulting in low inspection efficiency, high labor costs, and inability to meet the needs of mass production.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a thread detection device for automotive tire locking nuts, comprising a base plate, a vibratory feeder disposed on the upper side of one end of the base plate, a discharge guide rail disposed at the discharge port of the vibratory feeder, a limit block disposed on the side of the discharge guide rail away from the vibratory feeder, and a pusher cylinder disposed between the limit block and the discharge guide rail for pushing qualified products to the next station; a thread detection assembly disposed on the side of the base plate near a first cover plate, the thread detection assembly including a mounting base connected to the base plate, the mounting base... A first support column is detachably mounted on the base. A sliding block that can slide up and down is mounted on the first support column. A second support column is detachably mounted on the end of the sliding block. A sensor mounting block that can slide and adjust is mounted on the second support column. A sensor for detection is mounted on the side of the sensor mounting block by bolts. The vibratory feeder automatically and orderly arranges the workpieces and directionally conveys them to the discharge guide rail, replacing manual feeding and greatly improving feeding efficiency. The sensor detects whether there are threads on the side wall of the hole of the workpiece. The pusher cylinder pushes the qualified workpiece from the detection station to the next station.

[0006] As a supplement to the technical solution described in this utility model, the discharge guide rail is provided with a pin that can move up and down near the pusher cylinder. The top of the pin is threaded with a handle. A first cover plate is provided between the handle and the discharge guide rail. The first cover plate can rotate around the pin. The first cover plate is located on the upper side of the discharge guide rail. During inspection, the first cover plate presses down on the workpiece and limits the workpiece at the inspection position. When the workpiece fails the inspection, the first cover plate is rotated to expose the workpiece at the inspection position, making it convenient for workers to remove the defective product.

[0007] As a supplement to the technical solution described in this utility model, a second cover plate is provided on the upper side of the discharge guide rail along its discharge direction. A material taking notch is provided on the second cover plate near the first cover plate. The second cover plate presses down on the workpieces arranged sequentially in the discharge guide rail. The material taking notch facilitates the temporary removal of unqualified workpieces at the inspection position by manual personnel.

[0008] As a supplement to the technical solution described in this utility model, the pin is in the shape of a stepped shaft, including a first shaft portion and a second shaft portion. The first shaft portion provides rotational support for the first cover plate, so that the first cover plate can rotate around it.

[0009] As a supplement to the technical solution described in this utility model, the end of the discharge guide rail is provided with a mounting hole that slides with the first shaft. A through hole is provided on the lower side of the mounting hole, and the second shaft is located in the through hole. The mounting hole slides with the pin.

[0010] As a supplement to the technical solution described in this utility model, a spring is sleeved on the lower outer side of the second shaft. One end of the spring abuts against the top of the through hole, and the other end abuts against the upper side of the second shaft. The spring force causes the pin shaft to drive the handle downward to press the first cover plate. When the product fails the inspection, the operator lifts the handle, drives the pin shaft to slide upward along the mounting hole, and releases the first cover plate. The worker can then rotate the first cover plate.

[0011] As a supplement to the technical solution described in this utility model, the movable end of the pusher cylinder is provided with a pusher block. The pusher block can be made of POM and will not scratch the product. The movable end of the pusher cylinder drives the pusher block to push the product along the limit block to the processing station.

[0012] Compared with the prior art, the beneficial effects of this utility model are:

[0013] By setting up a vibratory feeder and discharge guide rail to replace the traditional manual feeding method, the car tire locking nuts to be inspected can be automatically and orderly arranged and directionally transported to the inspection station, significantly improving feeding efficiency. At the same time, the cooperation of the pusher cylinder and pusher block can quickly push qualified products to the next welding station, achieving seamless connection between inspection and subsequent processes, further improving overall production efficiency. The sensor in the thread inspection component is used for inspection, which is easy to operate. The design of the first cover plate, spring and pin shaft can not only effectively limit the workpiece during the inspection process, but also easily open the cover plate by moving the handle upward when a defective product is detected, and quickly remove the defective nut by combining it with the material removal notch. The adjustable structure can solve the problem that the existing car tire locking nuts are mostly inspected manually before the cap welding process, resulting in low inspection efficiency, high labor costs and inability to meet the needs of mass production. Attached Figure Description

[0014] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0015] Figure 2 This is a three-dimensional structural diagram of the thread detection component of this utility model;

[0016] Figure 3 This is a schematic diagram of the structure at the detection position of this utility model;

[0017] Figure 4 This is a cross-sectional view of the pin shaft of this utility model.

[0018] Figure 5 This is a cross-sectional structural diagram of the pin shaft of this utility model;

[0019] Figure 6 This is a cross-sectional view of the mounting hole of this utility model.

[0020] Figure label:

[0021] 1. Base plate, 2. Vibratory feeder, 3. Discharge guide rail, 31. Mounting hole, 32. Through hole, 4. Second cover plate, 41. Material picking notch, 5. Pin, 51. First shaft, 52. Second shaft, 6. First cover plate, 7. Spring, 8. Handle, 12. Limiting block, 9. Thread detection assembly, 91. Mounting base, 92. First support column, 93. Sliding block, 94. Second support column, 95. Sensor mounting block, 96. Sensor, 10. Pushing cylinder, 11. Pushing block. Detailed Implementation

[0022] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention.

[0023] The present invention relates to a thread detection device for automobile tire lock nuts, such as... Figure 1-6 As shown, the system includes a base plate 1, a vibratory feeder 2 mounted on the upper side of one end of the base plate 1, a discharge guide rail 3 mounted at the discharge port of the vibratory feeder 2, a chute for transporting the workpiece to be inspected mounted on the discharge guide rail 3, a limit block 12 mounted on the side of the discharge guide rail 3 away from the vibratory feeder 2, and a pusher cylinder 10 for pushing qualified products to the next station between the limit block 12 and the discharge guide rail 3; and a thread detection assembly 9, which is located on the side of the base plate 1 near the first cover plate 6. The thread detection assembly 9 includes a mounting base 91 connected to the base plate 1, a first support column 92 detachably mounted on the mounting base 91, the first support column 92 being vertically mounted, and a sliding block 9 that can slide up and down for adjustment. 3. A second support column 94 is detachably provided at the end of the sliding block 93. The second support column 94 is horizontally arranged and has a slidably adjustable sensor mounting block 95. A sensor 96 for detection is bolted to the side of the sensor mounting block 95. The vibrating plate 2 automatically and orderly arranges the workpieces and directionally conveys them to the discharge guide rail 3, replacing manual feeding and greatly improving feeding efficiency. The sensor 96 detects whether there are threads on the side wall of the hole of the workpiece. The pusher cylinder 10 pushes the qualified workpiece from the detection station to the next station. The sliding block 93 in the thread detection assembly 9 can slide up and down along the first support column 92 for adjustment, and the sensor mounting block 95 can slide along the second support column 94 for adjustment, flexibly adjusting the detection angle and height of the sensor 96.

[0024] In this embodiment, as Figure 4 As shown, the discharge guide rail 3 is provided with a vertically movable pin 5 near the pusher cylinder 10. The top of the pin 5 is threaded with a handle 8. The outer side wall of the handle 8 is provided with anti-slip texture. A first cover plate 6 is provided between the handle 8 and the discharge guide rail 3. The first cover plate 6 can rotate around the pin 5. The first cover plate 6 is located on the upper side of the discharge guide rail 3. During inspection, the first cover plate 6 presses down on the workpiece and limits the workpiece at the inspection position. When the workpiece is unqualified, the first cover plate 6 is rotated to expose the workpiece at the inspection position, making it convenient for workers to remove the unqualified product.

[0025] In this embodiment, as Figure 3 As shown, a second cover plate 4 is provided on the upper side of the discharge guide rail 3 along its discharge direction. A material taking notch 41 is provided on the second cover plate 4 near the first cover plate 6. The second cover plate 4 presses down the workpieces arranged in sequence inside the discharge guide rail 3. The material taking notch 41 facilitates the temporary removal of unqualified workpieces at the inspection position by manual personnel.

[0026] In this embodiment, as Figure 5As shown, the pin 5 is a stepped shaft, including a first shaft portion 51 and a second shaft portion 52. The first shaft portion 51 provides rotational support for the first cover plate 6, allowing the first cover plate 6 to rotate around it.

[0027] In this embodiment, as Figure 6 As shown, the end of the discharge guide rail 3 is provided with a mounting hole 31 that slides with the first shaft 51. A through hole 32 is provided on the lower side of the mounting hole 31. The second shaft 52 is located in the through hole 32. The mounting hole 31 slides with the pin 5.

[0028] In this embodiment, as Figure 4 As shown, a spring 7 is sleeved on the outer side of the lower end of the second shaft 52. One end of the spring 7 abuts against the top of the through hole 32, and the other end abuts against the upper side of the second shaft 52. The spring force of the spring 7 causes the pin 5 to drive the handle 8 downward to press the first cover plate 6. When the product fails the inspection, the operator lifts the handle 8, which drives the pin 5 to slide upward along the mounting hole 31. The handle 8 releases the first cover plate 6, and the worker can rotate the first cover plate 6.

[0029] In this embodiment, as Figure 3 As shown, the movable end of the pusher cylinder 10 is provided with a pusher block 11. The pusher block 11 can be made of POM and will not scratch the product. During the inspection, the pusher block 11 is located on the side of the discharge guide rail 3 to block the workpiece at the inspection position. After the inspection is completed, the pusher cylinder 10 retracts and the workpiece is conveyed to the limit block 12. The movable end of the pusher cylinder 10 drives the pusher block 11 to push the product along the limit block 12 to the processing station. At the same time, the pusher block 11 continues to be located on the side of the discharge guide rail 3 to block the next workpiece to be inspected.

[0030] In this embodiment, as Figure 1As shown, a batch of workpieces to be inspected is poured into vibratory feeder 2. The vibratory feeder is started, and the vibratory motor drives the bolts to be arranged in an orderly manner in the spiral track. They are then directionally conveyed to the end via discharge guide rail 3 and blocked and positioned by pusher block 11. The sensor 96 is an Omron model E3Z-L61. The emitting end of sensor 96 emits a concentrated beam of infrared light, which shines on the inner surface of the workpiece to be inspected. If the workpiece has threads, the thread profile is helical, and the light is scattered and reflected in multiple directions. Some of the light can return to the sensor receiving end, and the workpiece is judged to be qualified. If the workpiece has no threads, the inner surface is smooth, and the smooth wall surface is flat. The light is specularly reflected, the direction is concentrated, and the light deviates from the sensor receiving end, and the workpiece is judged to be unqualified. If the workpiece is qualified, the pusher cylinder 10 retracts, causing the pusher block 11 to move backward. The qualified workpiece continues to slide into the limit block 12. The pusher cylinder 10 continues to move, pushing the qualified workpiece into the next station. The pusher block 11 is located at the end of the discharge guide rail 3, blocking the next workpiece to be inspected. At the same time, the sensor 96 continues to inspect the workpiece at the inspection position. If the workpiece is unqualified, the pusher cylinder 10 does not move. The worker moves the handle 8 upward. The handle 8 drives the pin 5 to slide upward along the mounting hole 31. The handle 8 releases the first cover plate 6. The worker can rotate the first cover plate 6 to expose the defective product. The worker takes out the defective product and puts it into the defective product collection box. After taking it out, the worker continues to rotate the first cover plate 6 so that the upper part of the slide groove of the discharge guide rail 3 covers the workpiece.

[0031] It should be noted that all directional indicators (such as up, down, left, right, front, back, etc.) in this utility model embodiment are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicator will also change accordingly.

[0032] Furthermore, in this utility model, the use of terms such as "first," "second," etc., is for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this utility model, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly and specifically defined.

[0033] In this utility model, unless otherwise explicitly specified and limited, the terms "connection," "fixing," etc., should be interpreted broadly. For example, "fixing" can mean a fixed connection, a detachable connection, or an integral part; it can mean a mechanical connection or an electrical connection; it can mean a direct connection or an indirect connection through an intermediate medium; it can mean the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0034] Furthermore, the technical solutions of the various embodiments of this utility model can be combined with each other, but only if they are based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such combination of technical solutions does not exist and is not within the scope of protection claimed by this utility model.

Claims

1. A thread detection device for automobile tire lock nuts, characterized in that, include: A base plate (1) is provided with a vibrating plate (2) on one upper side. A discharge guide rail (3) is provided at the discharge port of the vibrating plate (2). A limit block (12) is provided on the side of the discharge guide rail (3) away from the vibrating plate (2). A pusher cylinder (10) for pushing qualified products to the next station is provided between the limit block (12) and the discharge guide rail (3). A thread detection assembly (9) is disposed on the side of the base plate (1) near the first cover plate (6). The thread detection assembly (9) includes a mounting base (91) connected to the base plate (1). A first support column (92) is detachably disposed on the mounting base (91). A sliding block (93) that can slide up and down is disposed on the first support column (92). A second support column (94) is detachably disposed at the end of the sliding block (93). A sensor mounting block (95) that can slide and adjust is disposed on the second support column (94). A sensor (96) for detection is mounted on the side of the sensor mounting block (95) by bolts.

2. The thread detection device for automobile tire lock nuts according to claim 1, characterized in that: The discharge guide rail (3) is provided with a pin (5) that can move up and down near the pusher cylinder (10). The top of the pin (5) is threaded with a handle (8). A first cover plate (6) is provided between the handle (8) and the discharge guide rail (3). The first cover plate (6) can rotate around the pin (5). The second cover plate (4) is located on the upper side of the discharge guide rail (3).

3. The thread detection device for automobile tire lock nuts according to claim 2, characterized in that: The upper side of the discharge guide rail (3) is provided with a second cover plate (4) along its discharge direction, and the second cover plate (4) is provided with a material taking notch (41) near the first cover plate (6).

4. The thread detection device for automobile tire lock nuts according to claim 2, characterized in that: The pin (5) is stepped and includes a first shaft portion (51) and a second shaft portion (52).

5. The thread detection device for automobile tire lock nuts according to claim 4, characterized in that: The end of the discharge guide rail (3) is provided with a mounting hole (31) that slides with the first shaft (51). A through hole (32) is provided on the lower side of the mounting hole (31), and the second shaft (52) is located in the through hole (32).

6. The thread detection device for automobile tire lock nuts according to claim 4, characterized in that: A spring (7) is sleeved on the outer side of the lower end of the second shaft (52). One end of the spring (7) abuts against the top of the through hole (32), and the other end abuts against the upper side of the second shaft (52).

7. The thread detection device for automobile tire lock nuts according to claim 1, characterized in that: The moving end of the pusher cylinder (10) is provided with a pusher block (11).