Device for detecting omission of steel shaft of electrical product
The electrical product missing steel shaft detection device, which integrates marking and rejection functions, utilizes a servo motor-driven linkage structure to achieve automated operation, solving the problem of manual sorting and rejection in existing technologies, improving the practicality of the device and reducing costs.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- NINGBO YUJIE ROTARY SHAFT CO LTD
- Filing Date
- 2025-05-07
- Publication Date
- 2026-04-17
AI Technical Summary
Existing electrical products with missing steel shafts still require manual sorting and removal after marking, which reduces the practicality of the device and increases the burden on staff.
Design a device for detecting missing steel shafts in electrical products, integrating marking and rejection functions. Utilize a servo motor to drive a linkage structure to achieve automated marking and rejection operations. A limit device prevents accidental collisions, and a shared power source reduces costs.
It enables automatic classification of materials after testing, reduces manual intervention, improves the practicality and environmental friendliness of the device, and reduces the cost of power sources.
Smart Images

Figure CN224127925U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of electrical product testing, and more specifically, to a device for detecting the omission of steel shafts in electrical products. Background Technology
[0002] As a key mechanical component of electrical products, steel shafts mainly undertake functions such as power transmission, support and positioning, and durable load bearing. Their performance directly affects the reliability, efficiency, and lifespan of the equipment. Therefore, after the production of electrical products is completed, it is necessary to check whether there are any missing steel shafts inside. Patent publication number CN209117884U discloses a device for detecting missing steel shafts in electrical products, including a testing platform and a marking pen. A conveyor belt is rotatably connected to the top of the testing platform. The top of the testing platform is located on a welded frame. The top of the frame is fixedly connected to a first XTL-100 electric telescopic rod by bolts. The telescopic end of the first XTL-100 electric telescopic rod is drivenly connected to a lifting plate. In this invention, a soft iron core is installed at the bottom of the mounting plate. Under the energization of the coil, it can detect whether a steel shaft is missing inside the electrical product. When a steel shaft is inside the electrical product, the soft iron core will move closer to the electrical product due to the magnetic force, thereby driving the pressure plate to move vertically downward. When the pressure plate moves downward, it will squeeze the pressure switch, which will control the marking mechanism to mark the electrical product for inspection. This electromagnetic detection structure improves the sensitivity of electrical product detection, thereby improving the quality of the detection device in detecting missing steel shafts.
[0003] In existing technologies, although electrical products with missing steel shafts can be marked, manual sorting and removal by workers are still required in the unloading area after marking. This reduces the overall practicality of the device. There is a need for a detection device that can actively remove electrical products with missing steel shafts directly from the conveyor belt to improve the practicality of the overall detection device and reduce the workload of workers. Utility Model Content
[0004] 1. Technical problems to be solved
[0005] To address the problems existing in the prior art, the purpose of this utility model is to provide an electrical product steel shaft leakage detection device. It can perform different operations directly on different structures after material detection, marking qualified materials and directly rejecting unqualified materials. Furthermore, through the linkage structure, the marking and rejection structures can be powered by a single power source, preventing accidental collisions between the two structures and saving costs. It also eliminates the need for additional rejection work by personnel, improving the overall practicality and environmental friendliness of the device.
[0006] 2. Technical Solution
[0007] To solve the above problems, the present invention adopts the following technical solution.
[0008] An electrical product leakage steel shaft detection device includes a workbench, a conveyor belt above the workbench, a mounting cover fixedly installed above the workbench, a detection device and a marking device respectively installed inside the mounting cover above the conveyor belt, a mounting frame fixedly installed on the side of the mounting cover, a drive mechanism fixedly installed inside the mounting frame, a limit device fixedly installed on the side of the mounting cover, a rejection device movably installed inside the limit device, the rejection device including a connecting rod, a toothed plate fixedly installed at the top of the connecting rod, a connecting shaft fixedly installed at the bottom of the connecting rod, a push plate fixedly installed at the outer end of the connecting shaft, and a limit protrusion fixedly installed on the side of the toothed plate.
[0009] Furthermore, the limiting device includes a fixing rod, the side of which is fixedly installed on the outside of the mounting cover, and a vertical rod is fixedly installed at one end of the fixing rod. A limiting seat and a limiting ring are fixedly installed at the upper and lower ends of the vertical rod, respectively.
[0010] Furthermore, the second toothed plate is slidably mounted inside the limiting seat via the second limiting protrusion, and the connecting shaft is slidably mounted inside the limiting ring.
[0011] Furthermore, the marking device includes a cross frame, a connecting rod is fixedly installed at one end of the cross frame, a marking machine is fixedly installed at the bottom end of the connecting rod, a toothed plate is fixedly installed on the bottom surface of the other end of the cross frame, and a limiting protrusion is fixedly installed on the back of the toothed plate.
[0012] Furthermore, the surface of the mounting cover is provided with a sliding groove that is compatible with the limiting protrusion.
[0013] Furthermore, the connecting rod is movably sleeved inside the mounting cover.
[0014] Furthermore, the drive mechanism includes a servo motor, which is fixedly installed inside the mounting bracket, and the output shaft of the servo motor is fixedly sleeved with gear one and gear two.
[0015] Furthermore, the tooth ratio of gear one and gear two is set to 1:2, the surface of gear two meshes with the surface of gear plate one, and the surface of gear one meshes with the surface of limiting protrusion plate two.
[0016] Furthermore, the detection device is electrically connected to a controller, and the controller is electrically connected to the servo motor.
[0017] 3. Beneficial effects
[0018] Compared with existing technologies, the advantages of this utility model are:
[0019] (1) This solution utilizes the rejection device, the limiting device, and the marking device to work together to perform corresponding operations on the material rack after inspection, ensuring that qualified materials are marked and unqualified materials are directly rejected. This eliminates the need for staff to perform additional sorting operations at the unloading point, thus improving the overall practicality of the device.
[0020] (2) This solution utilizes the drive mechanism as a power source to directly drive the marking device and the rejection device, reducing the cost of the power source and ensuring that the marking device and the rejection device will never collide. This ensures that the marking and rejection of materials can only be performed individually, reducing costs and improving the overall linkage of the device. Attached Figure Description
[0021] Figure 1 This is a schematic diagram of the overall structure of this utility model;
[0022] Figure 2 This is a schematic diagram of the limiting device structure in this utility model;
[0023] Figure 3 This is a schematic diagram of the rejection device in this utility model;
[0024] Figure 4 This is a schematic diagram of the marking device in this utility model;
[0025] Figure 5 This is a schematic diagram of the drive mechanism structure in this utility model.
[0026] Explanation of the labels in the diagram:
[0027] 1. Workbench; 2. Conveyor belt; 3. Mounting cover; 4. Detection device; 5. Marking device; 6. Limiting device; 7. Rejection device; 8. Mounting frame; 9. Drive mechanism; 501. Cross frame; 502. Toothed plate one; 503. Limiting protrusion one; 504. Connecting rod; 505. Marking machine; 601. Fixing rod; 602. Vertical rod; 603. Limiting seat; 604. Limiting ring; 701. Connecting rod; 702. Toothed plate two; 703. Coupling shaft; 704. Push plate; 705. Limiting protrusion two; 901. Servo motor; 902. Gear one; 903. Gear two. Detailed Implementation
[0028] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the protection scope of the present utility model.
[0029] In the description of this utility model, it should be noted that the terms "upper," "lower," "inner," "outer," "top / bottom," etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and 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, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.
[0030] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installed," "equipped with," "sleeved / connected," "connected," etc., should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.
[0031] Example 1:
[0032] Please see Figure 1-5 An electrical product leakage steel shaft detection device includes a workbench 1, a conveyor belt 2 above the workbench 1, a mounting cover 3 fixedly installed above the workbench 1, a detection device 4 and a marking device 5 respectively installed inside the mounting cover 3 above the conveyor belt 2, a mounting frame 8 fixedly installed on the side of the mounting cover 3, a drive mechanism 9 fixedly installed inside the mounting frame 8, a limiting device 6 fixedly installed on the side of the mounting cover 3, a rejection device 7 movably installed inside the limiting device 6, the rejection device 7 including a connecting rod 701, a toothed plate 702 fixedly installed at the top of the connecting rod 701, a connecting shaft 703 fixedly installed at the bottom of the connecting rod 701, a push plate 704 fixedly installed at the outer end of the connecting shaft 703, and a limiting protrusion 705 fixedly installed on the side of the toothed plate 702.
[0033] It should be noted that the detection device 4 in this application has the same structure as the detection component in the prior art, and the triggering function is also the same. Therefore, this application will not elaborate on this existing mature technology.
[0034] The limiting device 6 includes a fixed rod 601, the side of which is fixedly installed on the outside of the mounting cover 3. A vertical rod 602 is fixedly installed at one end of the fixed rod 601. A limiting seat 603 and a limiting ring 604 are fixedly installed at the upper and lower ends of the vertical rod 602, respectively. The second toothed plate 702 is slidably installed inside the limiting seat 603 through a second limiting protrusion 705. The connecting shaft 703 is slidably installed inside the limiting ring 604. The marking device 5 includes a cross frame 501, a connecting rod 504 is fixedly installed at one end of the cross frame 501, and a marking machine 505 is fixedly installed at the bottom end of the connecting rod 504. A toothed plate 502 is fixedly installed on the bottom surface of the other end of the cross frame 501. A limiting protrusion 503 is fixedly installed on the back of the toothed plate 502. A sliding groove that matches the limiting protrusion 503 is opened on the surface of the mounting cover 3. The connecting rod 504 is movably sleeved inside the mounting cover 3.
[0035] Specifically, the movement of the push plate 704 and the gear plate 702 is oriented and limited by the coupling 703 and the limiting protrusion 705 respectively, to prevent them from tilting and affecting the transmission between the gear plate 702 and the gear 902. Similarly, the limiting protrusion 503, together with the sliding groove and the sleeve rod 504, is movably sleeved inside the mounting cover 3, which achieves the same limiting purpose and ensures the stable transmission between the gear plate 502 and the gear 903.
[0036] The drive mechanism 9 includes a servo motor 901, which is fixedly installed inside the mounting bracket 8. The output shaft of the servo motor 901 is fixedly sleeved with a first gear 902 and a second gear 903. The gear ratio of the first gear 902 and the second gear 903 is set to 1:2. The surface of the second gear 903 meshes with the surface of the first gear plate 502, and the surface of the first gear 902 meshes with the surface of the second limiting protrusion 705. The detection device 4 is electrically connected to a controller, which is electrically connected to the servo motor 901.
[0037] Specifically, the different gear ratios of gear 1 902 and gear 2 903 are used to control the different moving speeds of push plate 704 and marking machine 505, ensuring that materials can be quickly removed from the surface of conveyor belt 2, preventing prolonged residue time from affecting the overall detection and conveying efficiency. Finally, the servo motor 901 is electrically connected to the controller and detection device 4 to enable the servo motor 901 to rotate forward and reverse accordingly, achieving the driving results of components for different operations.
[0038] The working principle of this utility model is as follows: After the detection device 4 detects an electrical product, it judges the result. If no steel shaft is missing, it controls the servo motor 901 to rotate forward, and the gear 1 902 drives the gear plate 2 702 to move backward. At the same time, the gear plate 1 502 is driven by the gear 2 903 to move downward. Then the marking machine 505 marks the qualified products. When a product is found to have a missing steel shaft, the controller controls the servo motor 901 to rotate in reverse, and the connecting rod 504 drives the marking machine 505 to move upward. The gear plate 2 702 drives the push plate 704 to push forward, removing the unqualified products from the surface of the conveyor belt 2. The staff can collect them directly on the opposite side of the push plate 704.
[0039] The above description is merely a preferred embodiment of this utility model; however, the protection scope of this utility model is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the technical scope disclosed in this utility model, based on the technical solution and its improved concept, should be included within the protection scope of this utility model.
Claims
1. A device for detecting the leakage of a steel shaft in an electric appliance product, comprising a worktable (1), characterized in that: A conveyor belt (2) is provided above the workbench (1). A mounting cover (3) is fixedly installed above the workbench (1). Inside the mounting cover (3), above the conveyor belt (2), a detection device (4) and a marking device (5) are respectively provided. A mounting frame (8) is fixedly installed on the side of the mounting cover (3). A drive mechanism (9) is fixedly installed inside the mounting frame (8). A limiting device (6) is also fixedly installed on the side of the mounting cover (3). A rejection device (7) is movably installed inside the limiting device (6). The rejection device (7) includes a connecting rod (701). A toothed plate (702) is fixedly installed at the top of the connecting rod (701). A connecting shaft (703) is fixedly installed at the bottom of the connecting rod (701). A push plate (704) is fixedly installed at the outer end of the connecting shaft (703). A limiting protrusion plate (705) is fixedly installed on the side of the toothed plate (702).
2. The device for detecting the leakage of the steel shaft of an electric appliance according to claim 1, characterized in that: The limiting device (6) includes a fixing rod (601), the side of which is fixedly installed on the outside of the mounting cover (3), and a vertical rod (602) is fixedly installed at one end of the fixing rod (601). A limiting seat (603) and a limiting ring (604) are fixedly installed at the upper and lower ends of the vertical rod (602), respectively.
3. The device for detecting the leakage of the steel shaft of an electric appliance according to claim 1, characterized in that: The second toothed plate (702) is slidably mounted inside the limiting seat (603) via the second limiting protrusion (705), and the connecting shaft (703) is slidably mounted inside the limiting ring (604).
4. The electrical product leakage steel shaft detection device according to claim 1, characterized in that: The marking device (5) includes a cross frame (501), a connecting rod (504) is fixedly installed at one end of the cross frame (501), a marking machine (505) is fixedly installed at the bottom end of the connecting rod (504), a toothed plate (502) is fixedly installed on the bottom surface of the other end of the cross frame (501), and a limiting protrusion plate (503) is fixedly installed on the back side of the toothed plate (502).
5. The device for detecting the leakage of the steel shaft of an electric appliance according to claim 1, characterized in that: The surface of the mounting cover (3) is provided with a sliding groove that is compatible with the limiting protrusion (503).
6. The device for detecting the leakage of the steel shaft of an electric appliance according to claim 4, characterized in that: The sleeve rod (504) is movably sleeved inside the mounting cover (3).
7. The device for detecting the leakage of the steel shaft of an electric appliance according to claim 1, characterized in that: The drive mechanism (9) includes a servo motor (901), which is fixedly installed inside the mounting bracket (8). The output shaft of the servo motor (901) is fixedly sleeved with gear one (902) and gear two (903).
8. The device for detecting the leakage of the steel shaft of an electric appliance according to claim 7, characterized in that: The tooth ratio of gear one (902) and gear two (903) is set to 1:
2. The surface of gear two (903) meshes with the surface of gear plate one (502), and the surface of gear one (902) meshes with the surface of limiting protrusion two (705).
9. The device for detecting the leakage of the steel shaft of an electric appliance according to claim 1, characterized in that: The detection device (4) is electrically connected to a controller, which is electrically connected to the servo motor (901).
Citation Information
Patent Citations
Electrical product missing steel shaft detection device
CN209117884U