An automatic screw quality detection and counting device
By designing an automatic screw quality detection and counting device, and utilizing a camera and a servo motor-driven uniform-speed stacking turntable, the high cost and low efficiency problems caused by manual sampling inspection were solved. This achieved automated screw quality detection and counting, improved detection accuracy and efficiency, and met the needs of enterprises for high-quality and high-speed development.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- DAXINFA (DALIAN) TECHNOLOGY DEVELOPMENT CO LTD
- Filing Date
- 2025-04-25
- Publication Date
- 2026-05-26
AI Technical Summary
In the current technology, screw quality inspection and counting mainly rely on manual sampling, which has problems such as high labor costs, easy fatigue, large inspection errors, inconsistent sampling standards, dangerous operation, low work efficiency and low degree of automation, making it difficult to meet the needs of enterprises for high-quality and high-speed development.
An automatic screw quality detection and counting device was designed. It adopts a camera and a servo motor-driven uniform-speed stacking turntable, combined with a cylinder guide rail and a blocking block to realize the automatic feeding, detection, counting and classification of screws. The camera identifies the quality of the screws and allocates them to qualified and unqualified product bins.
It has enabled automated inspection and counting of screw quality, improved inspection accuracy and efficiency, reduced labor costs, ensured the accuracy of product quality and delivery time, and met the needs of enterprises for efficient production.
Smart Images

Figure CN224272245U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of automatic detection and counting, specifically an automatic screw quality detection and counting device. Background Technology
[0002] Screw manufacturers frequently involve inspecting and counting screws to ensure quality and production quantity. Currently, these manufacturers rely on manual sampling for both inspection and counting. Manual operation suffers from high labor costs, fatigue, large inspection errors, inconsistent sampling standards, operational hazards, low efficiency, and low automation, hindering the company's high-quality and high-speed development. Therefore, there is an urgent need for an automated inspection and counting device capable of automatically selecting screws based on quality, ensuring a smooth and accurate selection process. This would improve work efficiency, reduce waste, increase the pass rate, save human capital, ensure accurate delivery times and product quality, and ultimately achieve customer satisfaction.
[0003] However, existing patents have the following drawbacks:
[0004] (1) Existing technologies all use manual sampling inspection. Manual operation has problems such as high labor costs, easy fatigue, large inspection error, inconsistent sampling standards, dangerous operation, low work efficiency and low degree of automation, which are not conducive to the high-quality and high-speed development of enterprises.
[0005] The information disclosed in this background section is intended only to enhance the understanding of the overall background of this utility model and should not be construed as an admission or in any way implying that the information constitutes prior art known to those skilled in the art. Utility Model Content
[0006] To solve the above problems, the technical solution of this utility model is: an automatic screw quality detection and counting device, including a camera, a qualified product rapid discharge device and a non-qualified product discharge device. This solves the problems of manual sampling inspection in the current technology, which has high labor costs, easy fatigue, large inspection errors, inconsistent sampling standards, dangerous operation, low work efficiency and low degree of automation, which are not conducive to the high-quality and high-speed development of enterprises.
[0007] Preferably, the base plate has a support rod fixedly connected to its upper end;
[0008] The testing mechanism base bracket, and the testing mechanism frame is fixedly connected to the upper end of the testing mechanism base bracket and the support rod;
[0009] A screw feeding device, which is fixedly connected to the upper end of the frame of the testing mechanism;
[0010] The outer panel connecting plate of the box is fixedly connected to the upper end of the frame of the testing mechanism;
[0011] The testing mechanism housing has its lower end fixedly connected to the lower end of the outer panel connecting plate of the housing.
[0012] A rapid discharge device for qualified products is provided, which is located at one end of the housing of the testing mechanism;
[0013] A non-conforming product discharge device is provided at one end of the detection mechanism housing;
[0014] A camera and motor mounting plate is fixedly connected to the lower end of the inner wall of the detection mechanism housing;
[0015] A servo motor is fixedly connected to the upper end of the camera and the motor mounting plate;
[0016] A uniform speed material stacking turntable, which is fixedly connected to the upper end of a servo motor;
[0017] The camera is fixedly connected to one end of the connecting plate on the outer panel of the housing.
[0018] Furthermore, the qualified product rapid discharge device and the unqualified product discharge device include: a cylinder guide rail fixing plate, the cylinder guide rail fixing plate being fixedly connected to one end of the detection mechanism housing, a cylinder being fixedly connected to one end of the cylinder guide rail fixing plate, the output end of the cylinder being movably connected through the interior of the cylinder guide rail fixing plate, a fixing plate being fixedly sleeved on the output end of the cylinder, a connecting plate being fixedly connected to the lower end of the cylinder guide rail fixing plate, a protrusion being fixedly connected to one end of the connecting plate, the protrusion being movably connected through the interior of the fixing plate, a linear guide rail being fixedly connected to one end of the fixing plate, and a material blocking block being fixedly connected to the lower end of the linear guide rail.
[0019] Furthermore, the upper end of the detection mechanism housing is hinged to a detection mechanism housing cover plate.
[0020] Furthermore, the surface of the uniform-speed material stacking turntable is in contact with the inner wall of the detection mechanism housing.
[0021] Furthermore, the base bracket of the testing mechanism and the frame of the testing mechanism are fixedly connected by screws.
[0022] Furthermore, a qualified product bin is provided below the qualified product rapid discharge device, and a non-qualified product bin is provided below the non-qualified product discharge device.
[0023] Furthermore, the qualified product rapid discharge device and the unqualified product discharge device have the same composition and structure.
[0024] The advantages of this invention compared to existing technologies are as follows:
[0025] (1) This utility model provides an automatic device for picking and counting screws of different quality. The detection system includes a constant speed turntable. When the end of the guide screw groove corresponds to the teeth of the constant speed turntable, the screw is automatically fed to the constant speed turntable. A camera is vertically installed at the bottom of the automatic turntable. When the screw rotates at a constant speed to the front of the camera, the quality of the picked screw is automatically photographed and counted. The collection system includes a qualified product bin and a defective product bin located on the lower side of a constant-speed turntable. The qualified product bin is connected to the end of a pneumatic cylinder 1. A camera accurately determines the position and quantity of qualified screws through picking and counting, and then pushes the screws out of the turntable's teeth and into the qualified product bin. Similarly, the defective product bin is connected to the end of a pneumatic cylinder 2. A camera accurately determines the position and quantity of defective screws through picking and counting, and then pushes the screws out of the turntable's teeth and into the defective product bin. The constant-speed turntable is connected to a servo motor via screws and fixed to the frame. This invention solves the problem of automatic screw quality detection and counting, replacing conventional manual operations. It automatically and accurately detects and counts screws, efficiently inspecting the quality of the screw head and threads, and automatically picking the quality and quantity of qualified and defective products, reducing labor costs and improving work efficiency. Attached Figure Description
[0026] Figure 1 This is the assembly drawing of the automatic screw quality detection and counting device of this utility model.
[0027] Figure 2 This is a cross-sectional view of the automatic screw quality detection and counting device of this utility model.
[0028] Figure 3 This is a side view of the automatic screw quality detection and counting device of this utility model.
[0029] As shown in the figure: 1. Detection mechanism housing; 2. Detection mechanism frame; 3. Detection mechanism housing cover; 4. Qualified product rapid discharge device; 5. Unqualified product discharge device; 6. Detection mechanism base bracket; 7. Uniform speed stacking turntable; 8. Screw feeding device; 9. Servo motor; 10. Motor fixing plate; 11. Camera; 12. Housing outer panel connecting plate; 13. Cylinder guide rail fixing plate; 14. Cylinder; 15. Linear guide rail; 16. Blocking material block. Detailed Implementation
[0030] The specific embodiments of this utility model will be further described below with reference to the accompanying drawings. Identical components are indicated by the same reference numerals.
[0031] It should be noted that the terms “front,” “back,” “left,” “right,” “up,” and “down” used in the following description refer to the directions shown in the attached diagram, while the terms “inside” and “outside” refer to the directions toward or away from the geometric center of a specific component, respectively.
[0032] To make the content of this utility model easier to understand, the technical solutions in the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Example 1
[0033] like Figures 1 to 3 As shown, an automatic screw quality detection and counting device includes: a support rod fixedly connected to the upper end of a base plate, which provides support for the device. A detection mechanism frame 2 is fixedly connected to the upper end of a detection mechanism base bracket 6 and the support rod; the detection mechanism base bracket 6 and the detection mechanism frame 2 are fixedly connected by screws; a screw feeding device 8 is fixedly connected to the upper end of the detection mechanism frame 2; a servo motor 9 is fixedly connected to the upper end of a camera and motor mounting plate 10; a uniform speed stacking turntable 7 is fixedly connected to the upper end of the servo motor 9; the surface of the uniform speed stacking turntable 7 is in contact with the inner wall of the detection mechanism housing 1. In use, screws are fed into the recesses of the uniform speed stacking turntable 7 via the screw feeding device 8. The servo motor 9 rotates the uniform speed stacking turntable 7, allowing screws to be fed into each recess. The connection between the detection mechanism housing 1 and the uniform speed stacking turntable 7 prevents screws from falling out of the recesses.
[0034] The outer panel connecting plate 12 of the housing is fixedly connected to the upper end of the frame 2 of the testing mechanism; the qualified product rapid discharge device 4 is set at one end of the housing 1 of the testing mechanism; the unqualified product discharge device 5 is set at one end of the housing 1 of the testing mechanism; a qualified product bin is set below the qualified product rapid discharge device 4, and an unqualified product bin is set below the unqualified product discharge device 5. When the uniform speed stacking turntable 7 rotates, the screws pass through the unqualified product discharge device 5 and the qualified product rapid discharge device 4 for classification, and qualified screws are sorted into the qualified product bin and unqualified screws are sorted into the unqualified product bin.
[0035] The camera and motor mounting plate 10 are fixedly connected to the lower end of the inner wall of the detection mechanism housing 1; the camera 11 is fixedly connected to one end of the outer panel connecting plate 12 of the housing. The lower end of the detection mechanism housing 1 is fixedly connected to the lower end of the outer panel connecting plate 12 of the housing. After intelligent identification and detection by the camera 11 fixed on the motor mounting plate 10, the quality of the screw head and thread teeth is automatically detected and counted, thereby classifying the screws through the qualified product rapid discharge device 4 and the unqualified product discharge device 5.
[0036] The qualified product rapid discharge device 4 and the unqualified product discharge device 5 include: a cylinder guide rail fixing plate 13, which is fixedly connected to one end of the detection mechanism housing 1. A cylinder 14 is fixedly connected to one end of the cylinder guide rail fixing plate 13. The output end of the cylinder 14 is movably connected through the interior of the cylinder guide rail fixing plate 13. A fixing plate is fixedly sleeved on the output end of the cylinder 14. A connecting plate is fixedly connected to the lower end of the cylinder guide rail fixing plate 13. A protrusion is fixedly connected to one end of the connecting plate. The protrusion is movably connected through the interior of the fixing plate. During use, the fixing plate can move back and forth through the protrusion by starting and stopping the cylinder 14. A straight... The linear guide rail 15 has a blocking block 16 fixedly connected to its lower end. The qualified product rapid discharge device 4 and the unqualified product discharge device 5 have the same structure. When the fixed plate moves back and forth, the linear guide rail 15 starts to move back and forth, which in turn causes the blocking block 16 to move back and forth. When a qualified screw passes through the qualified product rapid discharge device 4, the blocking block 16 moves by starting the cylinder 14 and touches the qualified screw, causing the qualified screw to fall into the qualified product box. When an unqualified screw passes through the unqualified product discharge device 5, the cylinder is started, causing the blocking block 16 to touch the unqualified screw, causing the unqualified screw to fall into the unqualified product box.
[0037] The upper end of the testing mechanism housing 1 is hinged to the testing mechanism housing cover 3, which can close the testing mechanism housing 1 and prevent it from being affected by the outside world.
[0038] In practical use: Screws enter the device through the feeding port and are automatically and sequentially hooked onto the threads of the uniform speed stacking turntable 7. The uniform speed stacking turntable 7 is fixed to the servo motor 9 with special bolts. The servo motor 9 is fixed to the connecting plate 12 on the outer panel of the housing. The screws are prevented from falling off due to the clearance fit between the uniform speed stacking turntable 7 and the detection mechanism housing 1. The screws rotate at a uniform speed, driven by the uniform speed stacking turntable 7 driven by the servo motor 9. After intelligent recognition and detection by the camera 11 fixed on the motor fixing plate 10, the quality of the screw head and thread teeth is automatically detected and counted. Camera 11 and the detection mechanism housing 1 are connected to the outer panel connecting plate 12 of the housing. Qualified and unqualified products will fall from the corresponding outlets after contacting the blocking block 16. Unqualified screws with quality problems are pushed into the unqualified product box by the pneumatic cylinder device of the unqualified product discharge device 5. Qualified screws that have been detected by intelligent identification are pushed into the qualified product box by the pneumatic cylinder device of the qualified product fast discharge device 4. Each time a screw passes through the camera 11, the camera counts the screws while detecting the quality. The data is sent to the background computer for display and storage through the camera's storage and memory function.
[0039] All electrical components mentioned in this article are connected to an external main controller and 220V AC mains power. The main controller can be a conventional known device such as a computer for control. The detailed description of known functions and components is omitted in the specific implementation of this disclosure. To ensure the compatibility of the device, the operating methods used are consistent with the parameters of commercially available instruments.
[0040] The present invention and its embodiments have been described above. This description is not restrictive, and the accompanying drawings are only one embodiment of the present invention; the actual structure is not limited thereto. In conclusion, if those skilled in the art are inspired by this description and design similar structures and embodiments without departing from the inventive spirit of the present invention, such designs should fall within the protection scope of the present invention.
Claims
1. An automatic screw quality detection and counting device, characterized in that, include: A base plate, the upper end of which is fixedly connected to a support rod; The testing mechanism base bracket (6) and the upper end of the testing mechanism base bracket (6) and the support rod are fixedly connected to the testing mechanism frame (2). Screw feeding device (8), which is fixedly connected to the upper end of the frame (2) of the detection mechanism; The outer panel connecting plate (12) of the box body is fixedly connected to the upper end of the testing mechanism frame (2); The lower end of the testing mechanism housing (1) is fixedly connected to the lower end of the outer panel connecting plate (12) of the housing. A qualified product rapid discharge device (4) is provided at one end of the testing mechanism housing (1); Non-conforming product discharge device (5), wherein the non-conforming product discharge device (5) is located at one end of the detection mechanism housing (1); Motor fixing plate (10), the motor fixing plate (10) is fixedly connected to the lower end of the inner wall of the detection mechanism housing (1); Servo motor (9), the servo motor (9) is fixedly connected to the upper end of motor mounting plate (10); A uniform speed material stacking turntable (7) is fixedly connected to the upper end of a servo motor (9); Camera (11), the camera (11) is fixedly connected to one end of the connecting plate (12) of the outer panel of the box; The qualified product rapid discharge device (4) and the unqualified product discharge device (5) include: a cylinder guide rail fixing plate (13), which is fixedly connected to one end of the detection mechanism housing (1), and a cylinder (14) is fixedly connected to one end of the cylinder guide rail fixing plate (13). The output end of the cylinder (14) is movably connected through the inside of the cylinder guide rail fixing plate (13). A fixing plate is fixedly sleeved on the output end of the cylinder (14). A connecting plate is fixedly connected to the lower end of the cylinder guide rail fixing plate (13). A protrusion is fixedly connected to one end of the connecting plate. The protrusion is movably connected through the inside of the fixing plate. A linear guide rail (15) is fixedly connected to one end of the fixing plate. A blocking block (16) is fixedly connected to the lower end of the linear guide rail.
2. The automatic screw quality detection and counting device according to claim 1, characterized in that: The upper end of the testing mechanism housing (1) is hinged to the testing mechanism housing cover plate (3).
3. The automatic screw quality detection and counting device according to claim 1, characterized in that: The surface of the uniform stacking turntable (7) is in contact with the inner wall of the detection mechanism box (1).
4. The automatic screw quality detection and counting device according to claim 1, characterized in that: The base bracket (6) of the testing mechanism is fixedly connected to the frame (2) of the testing mechanism by screws.
5. The automatic screw quality detection and counting device according to claim 1, characterized in that: A qualified product bin is provided below the qualified product rapid discharge device (4), and a non-qualified product bin is provided below the non-qualified product discharge device (5).
6. The automatic screw quality detection and counting device according to claim 1, characterized in that: The qualified product rapid discharge device (4) and the unqualified product discharge device (5) have the same composition structure.