A surface flatness detection device

Abstract

A surface flatness testing device includes a feeding structure, a discharging structure, and a testing structure. The testing structure includes a testing frame, a testing track, a feeding gripper, a vertical testing support mounted on the testing frame, a horizontal testing support movably connected to the vertical testing support, and a testing end mounted on the horizontal testing support. The horizontal testing support extends from the vertical testing support upwards onto the testing track. The testing track has a testing position for placing the material to be tested. The testing track moves the material to be tested below the testing end. Driven by the vertical testing drive, the horizontal testing support moves along the vertical testing support. The testing end moves under the drive of the vertical testing drive and contacts the surface of the material to be tested to check for flatness. The material with the surface tested is then conveyed to the next process via the discharging structure. This invention achieves fully automated operation from feeding and testing to discharging, significantly shortening the testing cycle for a single product and improving testing efficiency.

Description

Technical Field

[0001] This utility model belongs to the field of automated testing, and in particular relates to a surface flatness testing device. Background Technology

[0002] In modern manufacturing, quality control of product surface shape is a crucial step in ensuring functionality, assembly accuracy, and aesthetic quality. This is especially true in industries such as automotive parts, consumer electronics, medical devices, and precision molds, where higher demands are placed on the accuracy of part surface contours, curvature, and structural features. Therefore, the ability to quickly and accurately obtain product surface morphology information and determine its conformity to design specifications has become an indispensable technical aspect of the production process.

[0003] Currently, the industry's inspection of product surface shape still mainly relies on manual visual inspection or semi-automatic auxiliary methods. For example, operators use tools such as vernier calipers, rulers, and feeler gauges to measure local dimensions, or use equipment such as magnifying glasses and microscopes to observe whether there are defects such as bumps, scratches, or deformations on the surface. The manual inspection process is cumbersome, requiring point-by-point measurement or observation, which is difficult to meet the inspection needs of large-scale mass production. Due to differences in the experience level and judgment standards of different operators, inconsistent inspection results are easily caused, and even misjudgments and missed inspections may occur. Long-term repetitive work can easily cause visual fatigue and human error, affecting the overall inspection quality. For products with free-form surfaces, irregular structures, or minute features, manual inspection methods cannot fully cover all critical areas. At the same time, in the manual inspection mode, the loading and unloading process requires manual handling of products to and from the inspection area, which consumes a lot of time and manpower. During the handling process, products are prone to bumps and damage due to human negligence, affecting product quality. Utility Model Content

[0004] The purpose of this invention is to provide a surface flatness detection device to solve the technical problem of automatically detecting the surface shape of the material to be tested.

[0005] To achieve the above objectives, the specific technical solution of the surface flatness detection device of this utility model is as follows:

[0006] A surface flatness detection device includes a feeding structure and a discharging structure, as well as a detection structure disposed between the feeding structure and the discharging structure;

[0007] The detection structure includes a detection frame, a detection track on the detection frame, a feeding gripping device for moving the material to be detected from the feeding structure to the detection track, a vertical detection support on the detection frame, a horizontal detection support movably connected to the vertical detection support, and a detection end on the horizontal detection support.

[0008] The horizontal detection support extends from the vertical detection support above the detection track. The detection track has several detection positions for placing the material to be tested. The detection track moves the detection positions with the material to be tested below the detection end. The horizontal detection support moves along the vertical detection support under the drive of the vertical detection drive device. The detection end moves towards the material to be tested in the detection position under the drive of the vertical detection drive device and contacts the material to be tested to check the flatness of the surface. The material with the surface tested is then conveyed to the next process through the discharge structure.

[0009] As a further improvement of this utility model, the detection end extends downward and is provided with a plurality of detection probes; the central detection probe is the main detection probe, and a plurality of secondary detection probes are arranged around the main detection probe; the flatness of the surface of the material to be tested is detected based on the horizontal height difference between the secondary detection probes and the contact position of the main detection probes with the material to be tested.

[0010] As a further improvement of this utility model, the detection track rotates relative to the detection frame under the drive of the detection drive device, and the detection positions arranged symmetrically relative to the rotation axis pass sequentially below the detection end.

[0011] As a further improvement of this utility model, the detection frame is provided with a connecting column, and a connecting ring is rotatably connected to the periphery of the connecting column. The detection track is connected to the connecting ring. The outer peripheral surface of the drive shaft of the detection drive device has a toothed structure. The outer surface of the connecting ring is provided with a toothed groove corresponding to the toothed structure on the outer peripheral surface of the drive shaft of the detection drive device. The detection drive device drives the detection track to rotate relative to the detection frame through meshing.

[0012] As a further improvement of this utility model, the feeding structure includes a feeding track and a feeding alignment device. The feeding alignment device includes a feeding alignment bracket disposed above the feeding track, an alignment drive device disposed on the feeding alignment bracket, and clamping arms disposed on both sides of the feeding track along the conveying direction of the feeding track. The clamping arms move towards each other under the drive of the alignment drive device, and align the material to be tested on the feeding track by clamping.

[0013] As a further improvement of this utility model, the feeding gripping device includes a feeding bracket disposed on the detection frame, a feeding horizontal track disposed on the feeding bracket, a feeding gripping frame disposed on the feeding horizontal track, a feeding vertical drive device disposed on the feeding gripping frame, and a feeding gripping end disposed on the drive shaft of the feeding vertical drive device; the feeding gripping frame moves along the feeding horizontal track under the drive of the feeding horizontal drive device, the feeding vertical drive device drives the feeding gripping end to move up and down, and the feeding gripping end grips the material to be detected from the feeding track and places it at the detection position.

[0014] As a further improvement of this utility model, the discharge structure includes a first discharge track and a second discharge track, a discharge bracket disposed above the first discharge track and the second discharge track, a vertical discharge drive device disposed on the discharge bracket, a first discharge gripper that moves up and down along the discharge bracket under the drive of the vertical discharge drive device, a first discharge horizontal guide rail and a first discharge horizontal drive device disposed on the first discharge gripper, a second discharge gripper that moves along the first discharge horizontal guide rail under the drive of the first discharge horizontal drive device, and a second discharge gripper disposed on the second discharge gripper. The system includes a discharge horizontal guide rail and a second discharge horizontal drive device, and a discharge gripping end that moves along the second discharge horizontal guide rail under the drive of the second discharge horizontal drive device; the first discharge track is used for conveying qualified materials, and the second discharge track is used for conveying unqualified materials; the discharge gripping end moves up and down under the drive of the discharge vertical drive device, moves between the detection structure and the discharge structure under the drive of the second discharge horizontal drive device, and moves between the first discharge track and the second discharge track under the drive of the first discharge horizontal drive device.

[0015] As a further improvement of this utility model, the first discharge horizontal guide rail and the second discharge horizontal guide rail are arranged perpendicular to each other.

[0016] As a further improvement of this utility model, the detection position is detachably provided with a detection fixture corresponding to the material to be detected, which is used to stably hold the material to be detected during the detection process.

[0017] As a further improvement of this utility model, the feeding gripping end and the discharging gripping end grip and move the material to be tested by a negative pressure suction cup. Beneficial effects

[0018] The feeding gripper automatically and precisely transfers the material to be tested from the feeding structure to the testing track. The testing positions on the track then move sequentially to below the testing end for inspection. After testing, the material is automatically conveyed to the next process via the discharge structure. The entire process requires no manual intervention, significantly reducing manpower and avoiding errors and inefficiencies caused by manual operation. Compared to traditional manual inspection, this device can complete inspection tasks much faster. In large-scale production scenarios, it can increase the inspection volume per unit time several times, significantly improving production efficiency, shortening product delivery cycles, and helping companies respond quickly to market demands.

[0019] The vertical and horizontal inspection supports on the inspection rack work together. Driven by the vertical inspection drive device, the horizontal support moves flexibly, ensuring accurate contact between the inspection end and the surface of the material being inspected. Simultaneously, multiple inspection positions on the inspection track allow for continuous inspection of multiple products, fully utilizing equipment resources, reducing waiting time, and further improving inspection efficiency. This stable and efficient inspection method, compared to traditional manual inspection relying on visual inspection and simple tools, provides more accurate data on product surface flatness, effectively avoiding missed or false inspections and ensuring product quality.

[0020] Furthermore, the coordinated operation of the feeding and discharging structures optimizes the entire testing process. The feeding structure is responsible for orderly feeding materials into the testing stage, while the discharging structure promptly transports the tested materials out. Their close cooperation with the testing structure ensures a smooth and seamless testing process, forming a highly efficient closed-loop system. This integrated design not only improves the space utilization of the equipment but also reduces production stoppages caused by poor material transport, helping companies achieve refined management of the production process, reduce production costs, and enhance market competitiveness. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the surface flatness detection device according to the present invention;

[0022] Figure 2 This is a schematic diagram of the feeding structure;

[0023] Figure 3 This is a schematic diagram of the detection structure;

[0024] Figure 4 This is a schematic diagram of the feeding gripper structure;

[0025] Figure 5 To detect the track side view;

[0026] Figure 6 To detect the top view of the track;

[0027] Figure 7This is a schematic diagram of the material discharge structure;

[0028] Figure 8 This is a schematic diagram of the material discharge support structure;

[0029] Explanation of markings in the diagram: 1. Feeding structure; 11. Feeding track; 12. Feeding alignment device; 121. Feeding alignment bracket; 122. Alignment drive device; 123. Clamping arm; 2. Detection structure; 21. Detection frame; 211. Connecting column; 212. Connecting ring; 22. Detection track; 221. Detection position; 222. Detection drive device; 223. Drive shaft of detection drive device; 224. Detection fixture; 23. Feeding gripping device; 231. Feeding bracket; 232. Horizontal feeding track; 233. Feeding gripping frame; 234. Vertical feeding drive device; 235. 236. Feeding horizontal drive device; 24. Feeding gripper end; 25. Detection vertical support; 26. Detection vertical drive device; 27. Detection horizontal support; 28. Detection end; 29. ​​Detection vertical support; 20. Detection probe; 20. Discharge structure; 21. First discharge track; 22. Second discharge track; 23. Discharge support; 24. Discharge vertical drive device; 25. First discharge gripper frame; 26. First discharge horizontal guide rail; 27. First discharge horizontal drive device; 38. Second discharge gripper frame; 39. Second discharge horizontal guide rail; 310. Second discharge horizontal drive device; 311. Discharge gripper end. Detailed Implementation

[0030] 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.

[0031] Implementation example:

[0032] like Figure 1-8 The surface flatness detection device shown includes a feeding structure 1, a detection structure 2 and a discharge structure 3 arranged in sequence. In this embodiment, a heat sink with a raised surface is used as an example. The heat sink is placed on the feeding track 11 at equal intervals and conveyed to the detection structure 2. It is then grasped and moved by the feeding gripping device 23 to the detection fixture 224 of the detection track 22. The detection end 26 detects the raised surface in sequence, and the discharge gripping end 311 moves the detected heat sink out and conveys it to the next process in sequence.

[0033] Driven by the corresponding drive device, the feeding track 11 conveys the heat sink to the detection structure 2. The feeding alignment device 12 is set above the feeding track 11 through the feeding alignment bracket 121. The alignment drive device 122 drives two clamping arms 123 to align the heat sink forward by clamping. The clamping arms 123 are set on both sides of the feeding track 11 along the conveying direction of the heat sink.

[0034] After alignment, the heat sink plate, conveyed to the end of the feeding track 11, is gripped by the feeding gripping device 23 and placed onto the detection track 22. The detection frame 21 has an upwardly protruding connecting post 211, and a connecting ring 212 is rotatably mounted on the outer surface of the connecting post 211. In this embodiment, the connecting ring 212 is a crossed roller bearing, and its outer surface has toothed grooves. The drive shaft of the detection drive device 222 has a toothed structure on its outer surface. The drive shaft drives the connecting ring 212 to rotate relative to the connecting post 211 through a meshing structure. The detection track 22, located on the upper end of the connecting ring 212, rotates relative to the detection frame 21, ensuring detection efficiency. In this embodiment, four detection positions 221 are evenly spaced on the upper surface of the detection track 22. Four detection clamps 224 corresponding to the heat sink plate are detachably mounted via tapered pins. Two detection positions 221 are respectively located below the detection end 26 and the feeding gripping end 236, and one detection position 221 in between corresponds to the discharge gripping end 311.

[0035] The feeding bracket 231 is located on the side of the upper end of the detection frame 21 near the corresponding detection position 221. A horizontal feeding track 232 is provided parallel to the feeding track 11 on the feeding bracket 231. A feeding gripper 233 is slidably connected to the horizontal feeding track 232. A horizontal feeding drive device 235 drives the feeding gripper 233 to slide along the horizontal feeding track 232. The lower end of the drive shaft of the vertical feeding drive device 234 on the feeding gripper 233 is connected to the feeding gripper end 236. Driven by the horizontal feeding drive device 235, the feeding gripper end 236 moves between the feeding track 11 and the corresponding detection position, and moves up and down under the drive of the vertical feeding drive device 234. A negative pressure suction cup located below the feeding gripper end 236 grips and releases the heat sink.

[0036] The heat sink, placed in the detection fixture 224 via the feeding gripper 236, moves along the detection track 22 to the side of the detection vertical support 24. The detection vertical support 24 stands upright on the upper surface of the detection frame 21. A detection horizontal support 25 is slidably connected to the detection vertical support 24. A detection end 26 is set on the detection horizontal support 25, and nine downwardly extending detection probes 261 are retractably mounted on the detection end 26, arranged in a nine-square grid, with the main detection probe in the center and the eight auxiliary detection probes surrounding it. The detection vertical drive device 241 drives the detection horizontal support 25 to move along the detection vertical support 24. The detection end 26 moves downward until the detection probes 261 contact the surface of the heat sink. Using the contact point of the main detection probe as the reference point, the horizontal height difference between the contact points of the auxiliary detection probes and the contact points of the main detection probes is the detection value to check whether the convex surface of the heat sink meets the detection requirements.

[0037] The discharge gripping end 311 grips the heat sink that has completed testing from the corresponding detection position 221. The discharge structure includes a first discharge track 31 and a second discharge track 32 arranged in parallel, which are used for conveying and processing qualified and unqualified products, respectively. A discharge support 33 is provided above the first discharge track 31 and the second discharge track 32. A vertical discharge drive device 34 is provided on the top of the discharge support 33. The drive shaft of the vertical discharge drive device 34 extends downward and is connected to the first discharge gripping frame 35. A first discharge horizontal guide rail 36 and a first discharge horizontal drive device 37 are provided on the first discharge gripping frame 35. A second discharge gripping frame 38 is slidably connected to the first discharge horizontal guide rail 36. A second discharge horizontal guide rail 39 and a second discharge horizontal drive device 310 are provided on the second discharge gripping frame 38. The discharge gripping end 311 is slidably connected to the second discharge horizontal guide rail 39. The first discharge horizontal guide rail 36 and the second discharge horizontal guide rail 39 are arranged vertically, and the second discharge horizontal guide rail 39 is arranged along the discharge direction of the first discharge rail 31 and the second discharge guide rail 32.

[0038] The second horizontal discharge drive device 310 drives the discharge gripping end 311 to move along the second horizontal discharge guide rail 39 to above the corresponding detection position 221. The vertical discharge drive device 34 drives the first discharge gripping frame 35 to move downward. The discharge gripping end 311 grabs the heat sink plate that has been detected. The vertical discharge drive device 34 drives the discharge gripping end 311 to rise. The second horizontal discharge drive device 310 drives the discharge gripping end 311 to retract along the second horizontal discharge guide rail 39. The first horizontal drive device 37 drives the first discharge gripping frame 35 to move along the first horizontal discharge guide rail 36 according to the detection result of the heat sink plate surface. After the discharge gripping end 311 moves above the first discharge track 31 or the second discharge track 32, it releases the heat sink plate. The heat sink plate is conveyed to the next process along the first discharge track 31 and to the non-conforming product processing process along the second discharge track 32.

[0039] In this embodiment, all driving devices are motor or cylinder structures. The feeding gripping end 236 and the discharging gripping end 311 use a negative pressure suction cup structure to grip and release the heat sink. Compared with traditional mechanical gripping methods, the negative pressure suction cup will not cause damage such as pinch marks or scratches to the material surface, making it particularly suitable for products with fragile surfaces or high appearance requirements. Simultaneously, the negative pressure suction cup can quickly adsorb and release materials, greatly shortening material handling time and further improving the overall operating efficiency of the detection device. The control system determines whether the heat sink is qualified based on the detection results from the detection end. The first discharging horizontal driving device drives the discharging gripping end to move between the first and second discharging tracks based on the judgment result, quickly and accurately sorting the detected materials to the corresponding tracks. This dual-track discharging and flexible gripping design not only improves sorting efficiency but also avoids confusion between qualified and unqualified materials, helping enterprises to conduct refined management of product quality and reduce subsequent processing costs.

[0040] The device of this invention features a main detection probe and several surrounding auxiliary detection probes at the detection end. Surface flatness is detected by the horizontal height difference between the auxiliary probes and the contact points between the auxiliary probes and the material being tested and the main probe. The collaborative work of multiple probes allows for the acquisition of product surface information from multiple angles. Compared to single-detection methods, this approach more comprehensively and accurately captures subtle surface undulations and shape deviations, raising detection accuracy to the micrometer level or even higher. This effectively prevents substandard products due to insufficient detection accuracy from entering the market, ensuring product quality reliability. The detection track rotates relative to the detection frame under the drive of the detection drive device, with detection positions symmetrically arranged relative to the rotation axis passing sequentially below the detection end. This rotary design makes the detection process more compact and orderly, fully utilizing the space of the detection equipment to achieve continuous detection of multiple products within a limited space. This reduces waiting time between detection stations and further improves detection efficiency. Simultaneously, the gear-driven mechanism ensures the stability and accuracy of the detection track rotation, preventing track wobbling from affecting the detection results. The feeding alignment device in the feeding structure, driven by the alignment drive device, moves the clamping arms on both sides towards each other, accurately aligning the material to be tested on the feeding track. This ensures the material enters the testing stage in the correct position, reducing testing errors caused by material placement deviations. The testing position is equipped with a detachable testing fixture for the material to be tested, which stably clamps the material during testing, preventing displacement or shaking. This provides a reliable guarantee for accurate testing and further improves the accuracy and consistency of the test results.

[0041] It is understood that this utility model has been described through some embodiments, and those skilled in the art will recognize that various changes or equivalent substitutions can be made to these features and embodiments without departing from the spirit and scope of this utility model. Furthermore, under the teachings of this utility model, these features and embodiments can be modified to adapt to specific situations and materials without departing from the spirit and scope of this utility model. Therefore, this utility model is not limited to the specific embodiments disclosed herein, and all embodiments falling within the scope of the claims of this application are within the protection scope of this utility model.

Claims

1. A surface flatness detection device, characterized by, It includes a feeding structure and a discharging structure, as well as a detection structure disposed between the feeding structure and the discharging structure; The detection structure includes a detection frame, a detection track on the detection frame, a feeding gripping device for moving the material to be detected from the feeding structure to the detection track, a vertical detection support on the detection frame, a horizontal detection support movably connected to the vertical detection support, and a detection end on the horizontal detection support. The horizontal detection support extends from the vertical detection support above the detection track. The detection track has several detection positions for placing the material to be tested. The detection track moves the detection positions with the material to be tested below the detection end. The horizontal detection support moves along the vertical detection support under the drive of the vertical detection drive device. The detection end moves towards the material to be tested in the detection position under the drive of the vertical detection drive device and contacts the material to be tested to check the flatness of the surface. The material with the surface tested is then conveyed to the next process through the discharge structure.

2. The surface flatness detection device according to claim 1, characterized by The detection end extends downward and is provided with several detection probes; the central detection probe is the main detection probe, and several secondary detection probes are arranged around the main detection probe; the flatness of the surface of the material to be tested is detected based on the horizontal height difference between the secondary detection probes and the main detection probes at their contact positions with the material to be tested.

3. The surface flatness detection device of claim 1, wherein The detection track rotates relative to the detection frame under the drive of the detection drive device, and the detection positions, which are symmetrically arranged relative to the rotation axis, pass under the detection end in sequence.

4. The surface flatness detection device according to claim 3, wherein The testing frame is provided with a connecting column, and a connecting ring is rotatably connected to the periphery of the connecting column. The testing track is connected to the connecting ring. The outer circumferential surface of the drive shaft of the testing drive device has a toothed structure. The outer surface of the connecting ring is provided with a toothed groove corresponding to the toothed structure on the outer circumferential surface of the drive shaft of the testing drive device. The testing drive device drives the testing track to rotate relative to the testing frame through meshing.

5. The surface flatness detection device according to claim 1, wherein The feeding structure includes a feeding track and a feeding alignment device. The feeding alignment device includes a feeding alignment bracket disposed above the feeding track, an alignment drive device disposed on the feeding alignment bracket, and clamping arms disposed on both sides of the feeding track along the conveying direction of the feeding track. The clamping arms move towards each other under the drive of the alignment drive device, and align the material to be tested on the feed track by clamping.

6. The surface flatness detection device according to claim 5, wherein The feeding gripping device includes a feeding bracket mounted on the detection frame, a feeding horizontal track mounted on the feeding bracket, a feeding gripping frame mounted on the feeding horizontal track, a feeding vertical drive device mounted on the feeding gripping frame, and a feeding gripping end mounted on the drive shaft of the feeding vertical drive device. The feeding gripper moves along the feeding horizontal track under the drive of the feeding horizontal drive device, and the feeding vertical drive device drives the feeding gripper to move up and down. The feeding gripper grips the material to be tested from the feeding track and places it at the testing position.

7. The surface flatness detection device according to claim 6, wherein The discharge structure includes a first discharge track and a second discharge track, a discharge bracket disposed above the first discharge track and the second discharge track, a vertical discharge drive device disposed on the discharge bracket, a first discharge gripper that moves up and down along the discharge bracket under the drive of the vertical discharge drive device, a first discharge horizontal guide rail and a first discharge horizontal drive device disposed on the first discharge gripper, a second discharge gripper that moves along the first discharge horizontal guide rail under the drive of the first discharge horizontal drive device, a second discharge horizontal guide rail and a second discharge horizontal drive device disposed on the second discharge gripper, and a discharge gripper end that moves along the second discharge horizontal guide rail under the drive of the second discharge horizontal drive device. The first discharge track is used for conveying qualified materials, and the second discharge track is used for conveying unqualified materials. The discharge gripping end moves up and down under the drive of the vertical discharge drive device, moves between the detection structure and the discharge structure under the drive of the second horizontal discharge drive device, and moves between the first discharge track and the second discharge track under the drive of the first horizontal discharge drive device.

8. The surface flatness detection device according to claim 7, wherein The first discharge horizontal guide rail and the second discharge horizontal guide rail are arranged perpendicular to each other.

9. The surface flatness detection device according to claim 1, wherein The detection position is detachably equipped with a detection fixture corresponding to the material to be tested, which is used to stably hold the material to be tested during the testing process.

10. The surface flatness detection device according to claim 7, wherein The feeding gripper and the discharging gripper use negative pressure suction cups to grip and move the material to be tested.

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