A visual inspection device for a front bumper measuring gauge

Abstract

The utility model discloses a kind of visual inspection equipment of automobile front bumper test sheet, including detection system, fixture mechanism, the fixture mechanism is used to hold fixed piece to be detected, the fixture mechanism includes several inner support clamps and outer clamps clamp, the inner support clamps and outer clamps clamp are arranged at the periphery of piece to be detected.

Description

Technical Field

[0001] This utility model is a visual inspection device for measuring the front bumper of an automobile. Background Technology

[0002] With the rapid development of the automotive industry, the requirements for the production precision and assembly quality of body parts are constantly increasing. Especially in the inspection of automotive exterior parts, traditional manual inspection methods are no longer sufficient to meet the demands for high efficiency, high consistency, and high precision quality control. As an important component of the automotive exterior, the front bumper not only meets aesthetic requirements but also plays a crucial role in buffering and absorbing energy during collisions. Therefore, its dimensional accuracy, component fit, and surface condition must undergo rigorous testing.

[0003] In current manufacturing processes, the inspection of automotive front bumpers (i.e., the intermediate inspection process before bumper installation) largely relies on manual visual inspection or random sampling with measuring tools, resulting in low inspection efficiency, large human error, and untraceable data. To address the demands of diverse component structures and fast-paced production lines, automated inspection systems based on vision recognition technology are widely researched and applied. Vision inspection equipment can perform non-contact, rapid dimensional measurement and defect identification of workpieces, offering significant advantages such as high accuracy, high efficiency, and automatic recording and judgment.

[0004] However, in practical applications, due to the large size, complex shape, and high flexibility of the front bumper structure, unstable clamping and positioning can easily lead to image distortion and data drift, affecting the overall inspection accuracy. Therefore, the clamping system plays a crucial role in visual inspection equipment. Some existing clamping designs remain at the level of unidirectional clamping or simple support, unable to adapt to different bumper models or experiencing deformation and slippage during clamping, severely limiting the practical application effect of automated inspection systems. Utility Model Content:

[0005] The purpose of this invention is to overcome the shortcomings of the prior art and provide a visual inspection device for measuring the front bumper of an automobile.

[0006] A visual inspection device for testing automotive front bumpers includes an inspection system and a clamping mechanism. The clamping mechanism is used to hold and fix the part to be inspected. The clamping mechanism includes a plurality of inner support clamps and outer clamps, which are arranged around the part to be inspected.

[0007] Furthermore, the internal support fixture includes several internal support columns, which are embedded in pre-drilled holes on the workpiece to be tested.

[0008] Furthermore, the external clamp includes a manual clamp, which includes a base, a handle, and a clamping part. The clamping part is connected to the handle, and the handle and clamping part are rotatably connected to the base.

[0009] Furthermore, the handle portion includes a first connecting portion and a grip portion. One end of the connecting portion is hinged to the base, and the other end is connected to the handle portion. The clamp portion includes a clamping head and a second connecting portion. The clamping head is fixedly connected to one end of the second connecting portion, and the other end of the second connecting portion is hinged to the base. A connecting member is provided between the first connecting portion and the second connecting portion.

[0010] Furthermore, the base includes two L-shaped fixing plates arranged at relative intervals. Each fixing plate includes a flat section and a vertical section. The flat section is used to connect with other components, and the vertical section is used to connect with the handle and the clamping part.

[0011] Furthermore, the vertical section is provided with a clearance notch to accommodate the movement trajectory of the clamping part.

[0012] Furthermore, the first connecting part includes two support rods, which, together with the handle, form a Y-shaped structure. The two support rods of the first connecting part are connected to the outer sides of the vertical sections of the two fixed plates, and are hinged by passing through the pivot in sequence.

[0013] Furthermore, the second connecting part is connected between the vertical sections of the two fixed plates, and is hinged by a pivot.

[0014] Furthermore, the pressure head surface is provided with a screw, which passes through the side of the second connecting part and is locked by a nut.

[0015] Furthermore, the monitoring system includes a primer detection module, a felt detection module, a reset module, an emergency stop module, and corresponding command buttons.

[0016] Beneficial effects: Compared with the prior art, the present invention has the following advantages:

[0017] This clamping structure offers significant advantages in positioning accuracy. By directly inserting the inner support column of the inner support fixture into the pre-drilled hole in the workpiece, physical constraint is achieved from within the workpiece. This embedded positioning method is more stable than traditional surface-pressure positioning and can effectively suppress horizontal displacement and rotation errors, providing reliable benchmark support for high-precision visual inspection.

[0018] Regarding clamping stability, the device employs a clamping strategy that combines internal and external clamps. The inner support column provides internal support, while the clamping jaws in the outer clamp apply clamping force from the outside, creating multi-directional constraints on the workpiece to be inspected. This combined internal and external structure significantly improves the overall clamping rigidity, preventing workpiece displacement caused by vibration or pressure changes during inspection, thereby enhancing the stability of image acquisition and the reliability of data analysis.

[0019] Furthermore, this clamping system offers excellent ease of operation. The external clamping clamp is manually operated, featuring a simple structure and direct action, making it suitable for rapid operation and frequent switching on the production floor. Simultaneously, the ergonomic design of components such as the handle and clamping head ensures effortless and safe use, contributing to improved overall work efficiency.

[0020] The system's versatility is also a major advantage. The fixture structure design fully considers modularity and adjustability, enabling it to adapt to the inspection needs of different car bumper models. It has good tooling compatibility and expandability, allowing companies to flexibly adjust the fixture configuration according to product changes.

[0021] Finally, the fixture also excels in safety and maintainability. Equipped with an emergency stop module and a reset mechanism, it can immediately terminate the clamping action in the event of an abnormality, preventing injury to operators or damage to the workpiece. Furthermore, the clear layout of each structural component facilitates maintenance and allows for quick on-site replacement and maintenance, meeting the long-term requirements of stable equipment operation in industrial environments. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of a vision inspection device;

[0023] Figure 2 This is a schematic diagram of the clamping mechanism;

[0024] Figure 3 This is a diagram of a manual clamp;

[0025] Figure 4 This is a diagram of a manual clamp with the handle removed;

[0026] In the figure, 1 is the button, 2 is the part to be tested, 3 is the inner support clamp, 4 is the manual clamp, 5 is the pressure head, 6 is the second connecting part, 7 is the handle, 8 is the base, 9 is the connector, and 10 is the first connecting part. Detailed Implementation

[0027] To enhance understanding of this utility model, the present utility model will be further described in detail below with reference to the embodiments and accompanying drawings. These embodiments are only used to explain the present utility model and do not constitute a limitation on the scope of protection of the present utility model.

[0028] A visual inspection device for testing a front bumper of an automobile includes an inspection system and a clamping mechanism. The clamping mechanism is used to hold and fix the part to be inspected 2. The clamping mechanism includes a plurality of inner support clamps 3 and outer clamps, which are arranged around the part to be inspected 2.

[0029] This visual inspection equipment achieves stable clamping and precise positioning of a car front bumper inspection piece during inspection by coordinating the inspection system with a fixture mechanism. The fixture mechanism consists of an inner support fixture 3 and an outer clamping fixture, located inside and around the perimeter of the workpiece 2 to be inspected, respectively. The inner support fixture 3 provides internal support by embedding into pre-set positioning holes on the bumper, preventing workpiece wobbling; the outer clamping fixture provides external, wrap-around clamping, enhancing clamping force and avoiding displacement errors during inspection. The evenly distributed fixture configuration ensures comprehensive and uniform fixation of the bumper, resulting in accurate and stable image data acquired by the inspection system, supporting subsequent visual recognition and analysis of features such as dimensions, shape, and assembly status.

[0030] This device significantly improves the stability of the workpiece 2 during the inspection process, effectively eliminates image distortion or inspection errors caused by workpiece displacement, and ensures that the vision inspection system acquires high-quality image data. The fixture structure, through internal and external cooperation, enables rapid positioning and efficient clamping of complex contour parts, which helps to improve the inspection cycle and is suitable for the automatic inspection needs of mass production lines. In addition, the modular design of the fixture facilitates replacement and adjustment, and can adapt to the inspection needs of different models of bumpers, with good versatility and expandability.

[0031] In one possible implementation, the inner support clamp 3 includes a plurality of inner support columns, which are embedded in pre-drilled holes in the workpiece 2 to be tested.

[0032] The internal support fixture 3 employs an internal support column structure, which provides stable support by inserting into a pre-designed positioning hole on the workpiece 2. The internal support column can be made of high-strength steel or wear-resistant alloy to ensure sufficient positioning rigidity during insertion. By precisely matching the hole diameter with the outer diameter of the internal support column, the support column can effectively suppress the micro-displacement of the workpiece during the inspection process after insertion, ensuring the consistency and stability of image acquisition.

[0033] By using embedded positioning with internal support columns, the accuracy of clamping and positioning is not only greatly improved, but also the dependence on external clamping force is reduced, which reduces the risk of indentation on the workpiece surface caused by the external clamping structure and helps to protect the structural integrity of the test piece.

[0034] In one possible implementation, the external clamp includes a manual clamp 4, which includes a base 8, a handle, and a clamping part. The clamping part is connected to the handle, and the handle and clamping part are rotatably connected to the base 8.

[0035] The manual clamping jaw 4 of this external clamping fixture clamps the workpiece 2 by applying force to the handle, thereby clamping the clamping jaw. The rotating connection between the handle and the base 8 forms a lever mechanism, allowing the user to apply manual pressure to move the clamping jaw and clamp the workpiece, completing the locking action. This structure has high force transmission efficiency, is easy to operate, and is suitable for rapid on-site adjustment and clamping.

[0036] This structure is simple and compact, enabling rapid clamping and release, improving inspection efficiency, and is especially suitable for scenarios requiring frequent workpiece changes. Furthermore, its manual control method facilitates human intervention and maintenance, eliminating the need for complex electronic control units and reducing costs.

[0037] In one possible implementation, the handle portion includes a first connecting portion 10 and a grip portion 7. One end of the connecting portion is hinged to the base 8, and the other end is connected to the handle portion. The clamp portion includes a clamping head 5 and a second connecting portion 6. The clamping head 5 is fixedly connected to one end of the second connecting portion 6, and the other end of the second connecting portion 6 is hinged to the base 8. A connector 9 is provided between the first connecting portion 10 and the second connecting portion 6.

[0038] The handle and clamping parts of the manual clamping clamp 4 are hinged to the base 8 via the first connecting part 10 and the second connecting part 6, respectively, forming a four-bar linkage structure. The connecting part 9 provides constraint, enabling the clamping head 5 to generate a controllable clamping trajectory during operation. This structure improves the smoothness of the clamping action and the consistency of the clamping force.

[0039] The introduction of the four-bar linkage enhances the controllability of the clamping motion trajectory and the clamping stability, avoids inconsistent clamping force caused by differences in operating angles, and improves the performance and operational reliability of the clamp.

[0040] In one possible implementation, the base 8 includes two L-shaped fixing plates arranged at relative intervals. Each fixing plate includes a flat section and a vertical section. The flat section is used to connect with other components, and the vertical section is used to connect with the handle and the clamping part.

[0041] The base 8 serves as the load-bearing base of the clamping system, forming a stable frame structure through two L-shaped fixing plates. The straight section is fixed to the workbench or support frame, while the vertical section is used to install rotating components, realizing the rotational connection and support between the handle and the clamping part.

[0042] The L-shaped structure enhances structural strength and ease of installation, effectively preventing base 8 from shifting or deforming due to operation, and ensuring the stability and reliability of the fixture during long-term use.

[0043] In one possible implementation, the vertical section is provided with a clearance notch for the movement trajectory of the clamping part.

[0044] The notch design takes into account the movement trajectory of the clamping jaws, providing sufficient space to prevent structural interference when the clamps tighten or loosen. The location and size of the notch have been determined through mechanical analysis and structural simulation to ensure that it does not affect the overall strength of the fixing plate.

[0045] By setting up a movement clearance zone, jamming and interference during the clamping process are avoided, improving the smoothness of operation and the overall user experience of the clamp, while maintaining the strength and integrity of the overall structure.

[0046] In one possible implementation, the first connecting part 10 includes two support rods, which, together with the handle, form a Y-shaped structure. The two support rods of the first connecting part 10 are connected to the outer sides of the vertical sections of the two fixed plates and are hinged by passing through a pivot in sequence.

[0047] The Y-shaped structure consists of two support rods and the main handle rod forming a triangular stabilizing structure. By hinged to the outside of the fixed plate, it forms a symmetrical force transmission system, which can provide balanced clamping force and stable support during operation.

[0048] The Y-shaped structure enhances the force transmission efficiency during the clamping process, improves the overall structural rigidity and durability of the device, and reduces the possibility of structural deformation during long-term use.

[0049] In one possible implementation, the second connecting part 6 is connected between the vertical sections of the two fixed plates, and is hinged by a pivot.

[0050] The second connecting part 6 is located between the two fixed plates and is hinged by a pivot to form a precise rotation axis, ensuring the consistency of the trajectory and the symmetry of the force of the clamping part during operation.

[0051] The articulated structure provides a stable and reliable pivot point, preventing the clamping jaws from shifting during clamping and improving clamping accuracy and equipment lifespan.

[0052] In one possible implementation, the pressure head 5 is provided with a screw on its surface, the screw passing through the side of the second connecting part 6 and being locked by a nut.

[0053] After the screw of the pressure head 5 passes through the second connecting part 6, it is locked by a nut, realizing the fine adjustment and fixation of the position of the pressure head 5. This structure allows the clamping position of the pressure head 5 to be adjusted according to the actual workpiece size or clamping requirements, improving the flexibility of the fixture.

[0054] This adjustment structure facilitates rapid on-site calibration, improves clamping accuracy and efficiency, and enhances the fixture's adaptability to workpieces of different sizes.

[0055] In one possible implementation, the monitoring system includes a primer detection module, a felt detection module, a reset module, an emergency stop module, and corresponding instruction buttons 1.

[0056] The monitoring system integrates multiple functional modules that work together: the primer detection module is used to detect the coating status; the felt detection module is used to identify the integrity of the felt adhesion; the reset module initializes the status of each component; the emergency stop module provides shutdown protection in case of emergencies; each functional module is controlled by command button 1, supporting manual or automatic operation modes.

[0057] This integrated system enables automatic identification of multiple key process features of the workpiece under inspection, improving the comprehensiveness and accuracy of the inspection; the emergency stop and reset module enhances the system's safety and reliability, meeting the industrial site's demand for intelligent, efficient, and safe inspection equipment.

[0058] Instructions for use: The operator must place the bumper test piece to be inspected stably on the working platform of the vision inspection equipment, ensuring that its pre-drilled hole is basically aligned with the support column position of the inner support clamp 3. At the same time, it should be checked whether the clamping mechanism is in the reset state, that is, the inner support column is not inserted and the manual clamping clamp 4 has not been pressed down to clamp, in preparation for subsequent clamping.

[0059] The second step is the positioning operation of the inner support fixture 3. The operator inserts multiple inner support columns one by one into the corresponding positioning holes on the bumper. This operation mainly achieves the initial fixation of the workpiece and prevents it from horizontally shifting during the subsequent clamping process. The inner support columns need to be inserted in place, and their embedded structure provides internal support for the workpiece, forming a good clamping reference.

[0060] The third step then proceeds to the clamping process of the external clamp. The operator manually presses the handle of the clamp, causing it to rotate via the first connecting part 10 and the base 8, thus pressing the clamp down to the clamping position. The clamp head 5 in the clamp will clamp the workpiece from the outside, providing the necessary external stabilizing force. If the clamp structure is equipped with a screw adjustment device, the clamp head 5 can be finely adjusted and the nut can be tightened to ensure uniform and stable clamping pressure.

[0061] The fourth step is the final confirmation of the clamping status. At this point, the operator should check that all internal support columns and clamping parts are fully in place, and confirm that the pressure head 5 is in tight contact with the workpiece surface without any looseness. If the equipment integrates a status sensor or reset module, the clamping completion status can also be confirmed through system feedback to ensure that the fixture is stably locked before entering the testing procedure.

[0062] The final step is to initiate the visual inspection. After confirming that the fixture mechanism is operating correctly, the operator can start the inspection system via the control interface or button 1. The system will sequentially execute preset procedures such as primer inspection and felt inspection to complete a comprehensive visual analysis and quality assessment of the workpiece.

[0063] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A visual inspection device for measuring the front bumper of an automobile, characterized in that, The device includes a detection system and a clamping mechanism. The clamping mechanism is used to hold and fix the workpiece to be tested. The clamping mechanism includes several inner support clamps and outer clamps, which are arranged around the workpiece to be tested.

2. The visual inspection device according to claim 1, characterized in that, The internal support fixture includes several internal support columns, which are embedded in pre-drilled holes on the workpiece to be tested.

3. The visual inspection device according to claim 1, characterized in that, The external clamp includes a manual clamp, which includes a base, a handle, and a clamping part. The clamping part is connected to the handle, and the handle and clamping part are rotatably connected to the base.

4. The visual inspection device according to claim 3, characterized in that, The handle portion includes a first connecting portion and a grip portion. One end of the connecting portion is hinged to the base, and the other end is connected to the handle portion. The clamp portion includes a clamping head and a second connecting portion. The clamping head is fixedly connected to one end of the second connecting portion, and the other end of the second connecting portion is hinged to the base. A connecting member is provided between the first connecting portion and the second connecting portion.

5. The visual inspection device according to claim 4, characterized in that, The base includes two L-shaped fixing plates spaced apart from each other. Each fixing plate has a flat section and a vertical section. The flat section is used to connect with other components, and the vertical section is used to connect with the handle and the clamping part.

6. The visual inspection device according to claim 5, characterized in that, The vertical section is provided with a clearance notch to accommodate the movement trajectory of the clamping part.

7. The visual inspection device according to claim 5, characterized in that, The first connecting part includes two support rods, which, together with the handle, form a Y-shaped structure. The two support rods of the first connecting part are connected to the outside of the vertical sections of the two fixed plates and are hinged by passing through the pivot in sequence.

8. The visual inspection device according to claim 5, characterized in that, The second connecting part is connected between the vertical sections of the two fixed plates and is hinged by a rotating shaft.

9. The visual inspection device according to claim 4, characterized in that, The pressure head surface is provided with a screw, which passes through the side of the second connecting part and is locked by a nut.

10. The visual inspection device according to claim 1, characterized in that, The monitoring system includes a primer detection module, a felt detection module, a reset module, an emergency stop module, and corresponding command buttons.

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