Intelligent detection tool for leather surface flaws and thickness
The intelligent inspection fixture, which integrates a multispectral module and a heating component, solves the problems of identifying surface defects and measuring thickness of leather, achieving efficient and accurate inspection results and reducing the rate of missed detections and scrap.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- TIANSHOU FUJIAN SUPERFIBER TECH
- Filing Date
- 2025-07-16
- Publication Date
- 2026-05-22
AI Technical Summary
Existing technologies struggle to effectively identify defects on the leather surface that are similar in color to the base material, resulting in a high rate of missed detections. Furthermore, leather deformation affects the accuracy of thickness measurements and increases the scrap rate.
The system employs a detection sensor that integrates multispectral modules such as visible light and infrared light, combined with a fan and heating components. It identifies defects and eliminates humidity deformation through spectral feature analysis, thus achieving intelligent detection.
It improves the accuracy of leather surface defect identification and thickness measurement precision, reduces scrap rate, and provides a stable testing environment.
Smart Images
Figure CN224266855U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of leather inspection technology, specifically to an intelligent inspection fixture for leather surface defects and thickness. Background Technology
[0002] Leather is a high-quality raw material for clothing that is not easily rotten and has good flexibility. During the process from animal growth to tanning, due to individual differences such as the animal's growth environment, the properties of leather vary greatly. Various defects are inevitable, such as wormholes, cracks, wrinkles, scratches, and uneven color. Furthermore, the shape, size, texture, color, and the shape, size, and location of surface defects of each piece of leather are random.
[0003] Currently, most leather inspections rely solely on visible light cameras or manual visual inspection, making it difficult to identify defects that are similar in color to the leather base. This results in a high rate of missed detections and unstable product quality. Furthermore, localized shrinkage or stretching of the leather causes deformation, which not only affects the accuracy of subsequent processes (such as inaccurate thickness measurement) but may also directly lead to changes in leather dimensions, increasing the scrap rate. Therefore, an intelligent inspection fixture for leather surface defects and thickness is proposed. Utility Model Content
[0004] The purpose of this invention is to provide an intelligent inspection fixture for leather surface defects and thickness, in order to solve the problems mentioned in the background art.
[0005] To achieve the above objectives, this utility model provides the following technical solution: It includes a base and a fan. A workbench is connected to the top of the base, and a top frame is connected to the top of the workbench. An extension block is connected to the top of the top of the top frame, and a connecting plate is connected to the bottom of the extension block. Telescopic rods are connected to both sides of the bottom of the connecting plate, and contact elements are connected to the bottom of the telescopic rods. A first spring is sleeved on the surface of the telescopic rods. First vertical plates are connected to both ends of one side of the workbench. A conveying roller and a driven roller are rotatably arranged between the first vertical plates, and the conveying roller and the driven roller are arranged vertically. A motor frame is connected to one side of one of the first vertical plates, and a motor is connected to the top of the motor frame. Through grooves are opened in the upper half of the surfaces of both first vertical plates, and the driven roller shaft is slidably disposed inside the through groove. A sliding plate is slidably disposed above the driven roller shaft inside the through groove, and a second spring is connected to the top of the sliding plate inside the through groove. Second vertical plates are connected to both ends of the other side of the workbench, and an upper rotating roller and a lower rotating roller are rotatably disposed between the second vertical plates.
[0006] Preferably, both the upper and lower rotating roller shafts are connected to and equipped with transmission gears, and the two transmission gears mesh with each other. The lower rotating roller shaft passes through one side of the second vertical plate, and pulleys are connected to both the surface of the lower rotating roller shaft and the output end surface of the motor frame. A transmission belt is sleeved between the two pulleys.
[0007] Preferably, the bottom end of the contact member is provided with a plurality of first placement slots, and an upper detection sensor is connected and installed inside each of the plurality of first placement slots. The top of the worktable is provided with a plurality of second placement slots below the contact member, and a lower detection sensor is connected and installed inside each of the plurality of second placement slots. The plurality of second placement slots and the lower detection sensors are arranged opposite to each other.
[0008] Preferably, a distance sensor is connected inside both of the telescopic rods.
[0009] Preferably, the bottom of the workbench is provided with a first cavity at the top of the base, and a second cavity is provided inside the workbench, with the first cavity and the second cavity communicating with each other. The top of the workbench is provided with multiple through holes above the second cavity. The fan is set on the ground and its output end extends into the base. A heating component is connected to one side of the base and its output end extends into the base.
[0010] Preferably, four reinforcing rods are provided between the bottom of the workbench and the perimeter of the base.
[0011] Preferably, a control panel is connected to one side of the top frame, and the control panel is electrically connected to the upper detection sensor, the lower detection sensor, the distance sensor, the fan, and the heating component.
[0012] Compared with the prior art, the beneficial effects of this utility model are as follows: the upper / lower detection sensors can integrate multispectral modules such as visible light and infrared light, and identify defects such as color difference, scratches, and oil stains on the leather surface through spectral feature analysis; the hot air generated by the heating component is delivered to the base and workbench through the fan, and a circulating airflow is formed through the second cavity and through holes to uniformly heat the leather surface, which can eliminate the deformation of the leather caused by humidity changes, avoid thickness detection errors, and provide a stable environment for subsequent coating, embossing and other processes. Attached Figure Description
[0013] Figure 1 A schematic diagram of the left-hand structure of an intelligent detection fixture for leather surface defects and thickness;
[0014] Figure 2 A schematic diagram of the right-hand structure of an intelligent detection fixture for leather surface defects and thickness;
[0015] Figure 3A schematic diagram of the front section structure of an intelligent detection fixture for leather surface defects and thickness;
[0016] Figure 4 This is a side-section diagram of an intelligent detection fixture for leather surface defects and thickness.
[0017] In the diagram: 1. Base; 2. Workbench; 3. Top frame; 4. Extension block; 5. Connecting plate; 6. Telescopic rod; 7. Contact element; 8. First spring; 9. First upright plate; 10. Conveyor roller; 11. Driven roller; 12. Motor frame; 13. Motor; 14. Through slot; 15. Slide plate; 16. Second spring; 17. Second upright plate; 18. Upper rotating roller; 19. Lower rotating roller; 20. Transmission gear; 21. Pulley; 22. Transmission belt; 23. First placement slot; 24. Upper detection sensor; 25. Second placement slot; 26. Lower detection sensor; 27. Distance sensor; 28. First cavity; 28. Second cavity; 29. Through hole; 30. Fan; 31. Heating assembly; 32. Reinforcing rod; 33. Control panel. Detailed Implementation
[0018] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0019] Please see Figures 1-4 This utility model provides a technical solution, including a base 1 and a fan 30. A workbench 2 is connected to the top of the base 1, and a top frame 3 is connected to the top of the workbench 2. An extension block 4 is connected to the top of the inside of the top frame 3, and a connecting plate 5 is connected to the bottom of the extension block 4. Telescopic rods 6 are connected to both sides of the bottom of the connecting plate 5, and contact elements 7 are connected to the bottom of the telescopic rods 6. A first spring 8 is sleeved on the surface of the telescopic rods 6. A first upright plate 9 is connected to both ends of one side of the workbench 2. A conveying roller 10 and a driven roller 11 are rotatably arranged between the first upright plates 9, and the conveying roller 10 and the driven roller 11 are respectively... The moving rollers 11 are arranged vertically. One of the first vertical plates 9 is connected to a motor frame 12 on one side, and a motor 13 is connected to the top of the motor frame 12. The upper half of the surfaces of the two first vertical plates 9 are provided with through grooves 14, and the shaft of the driven roller 11 is slidably disposed inside the through groove 14. A slide plate 15 is slidably disposed inside the through groove 14 above the shaft of the driven roller 11. A second spring 16 is connected to the top of the slide plate 15 inside the through groove 14. The other two ends of the worktable 2 are connected to second vertical plates 17, and an upper rotating roller 18 and a lower rotating roller 19 are rotatably disposed between the second vertical plates 17.
[0020] Both the upper rotating roller 18 and the lower rotating roller 19 have transmission gears 20 connected to their shaft surfaces, and the two transmission gears 20 mesh with each other. The shaft of the lower rotating roller 19 passes through one side of the second vertical plate 17, and pulleys 21 are connected to both the shaft surface of the lower rotating roller 19 and the output end surface of the motor frame 12. A transmission belt 22 is sleeved between the two pulleys 21. Its function is to drive the pulleys 21 and the transmission belt 22 through the motor 13 to drive the lower rotating roller 19 to rotate. Since the upper rotating roller 18 and the lower rotating roller 19 mesh with each other through the transmission gears 20, when the upper rotating roller 18 rotates, it can drive the lower rotating roller 19 to rotate synchronously, thereby realizing the conveying of leather and facilitating the subsequent detection of leather surface defects and thickness.
[0021] The bottom of the contact member 7 is provided with multiple first placement slots 23, and each of the multiple first placement slots 23 is connected to an upper detection sensor 24. The top of the worktable 2 is provided below the contact member 7 and has multiple second placement slots 25, each of the multiple second placement slots 25 is connected to a lower detection sensor 26. The multiple second placement slots 25 and the lower detection sensors 26 are arranged opposite to each other. The function of the upper detection sensors 24 and the lower detection sensors 26 is to detect defects on the leather surface. When the upper detection sensors 24 and the lower detection sensors 26 detect defects on the leather surface that are not up to standard, they will transmit a signal to the control panel 33 for display. This allows the staff to promptly detect defects on the leather surface and defects in the leather thickness, thereby improving the efficiency and accuracy of leather inspection.
[0022] Both telescopic rods 6 are equipped with distance sensors 27. The purpose of these sensors is to detect the contact distance between the contact piece 7 and the worktable 2 in real time, thereby detecting the thickness of the leather.
[0023] A first cavity 281 is formed at the bottom of the workbench 2, located at the top of the base 1. A second cavity 28 is formed inside the workbench 2, and the first cavity 281 and the second cavity 28 are interconnected. Multiple through holes 29 are formed above the second cavity 28 at the top of the workbench 2. A fan 30 is mounted on the ground, with its output extending into the base 1. A heating element 31 is connected to one side of the base 1, with its output extending into the base 1. The function of the fan 30 and heating element 31 is to dry and heat the leather on the workbench 2, preventing moisture and wrinkles from affecting the test results and improving the accuracy of the test. Simultaneously, the airflow generated by the fan 30 enters the second cavity 28 and the first cavity 281 through the through holes 29, effectively accelerating the airflow on the leather surface, improving drying efficiency, softening the leather, and removing wrinkles. The heating element 31 provides the necessary heat to promote the evaporation of moisture inside the leather, further accelerating the drying speed.
[0024] Four reinforcing rods 32 are connected between the bottom of the workbench 2 and the four sides of the base 1. The purpose of the reinforcing rods 32 is to increase the structural stability between the workbench 2 and the base 1, improve the load-bearing capacity and safety of the entire testing fixture, ensure that the fixture is not easily deformed or damaged during long-term or high-load operation, and extend the service life of the fixture.
[0025] A control panel 33 is connected to one side of the top frame 3. The control panel 33 is electrically connected to the upper detection sensor 24, lower detection sensor 26, distance sensor 27, fan 30, and heating component 31. Its function is to allow operators to easily control the working status of the entire inspection fixture, enabling intelligent detection of surface defects and thickness in the leather. The control panel 33 can display the detection data from the upper detection sensor 24, lower detection sensor 26, and distance sensor 27 in real time, as well as the working status of the fan 30 and heating component 31, allowing operators to intuitively understand the leather inspection results and make adjustments as needed. Furthermore, the control panel 33 also has data storage and export functions, recording each inspection data point for subsequent data analysis and traceability.
[0026] Working Principle: In operation, the operator first places the leather to be inspected between the conveyor roller 10 and the driven roller 11. Then, the motor 13 is started, driving the pulley 21 and transmission belt 22 to rotate, which in turn rotates the lower rotating roller 19. Since the upper rotating roller 18 and the lower rotating roller 19 are meshed through the transmission gear 20, when the upper rotating roller 18 rotates, it drives the lower rotating roller 19 to rotate synchronously, thus conveying the leather. During the conveying process, the upper detection sensor 24 at the bottom of the contact element 7 and the lower detection sensor 26 at the top of the worktable 2 detect defects on the leather surface. When the upper detection sensor 24 and the lower detection sensor 26 detect defects on the leather surface that are unqualified, they transmit a signal to the control panel 33 for display, allowing the operator to promptly identify surface defects and unqualified leather thickness. Simultaneously, the distance sensors 27 inside the two telescopic rods 6 detect the contact distance between the contact element 7 and the worktable 2 in real time, thereby detecting the leather thickness. The detection data is also transmitted to the control panel 33 for display. During the testing process, staff can start the fan 30 and heating component 31 through the control panel 33. The fan 30 delivers the hot air generated by the heating component 31 to the base 1 and the workbench 2. The airflow is formed through the second cavity 28 and the through hole 29 to uniformly heat the leather surface. This can eliminate the deformation of the leather caused by changes in humidity, avoid errors in thickness detection, and provide a stable environment for subsequent coating, embossing and other processes.
[0027] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.
[0028] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.
Claims
1. A smart inspection fixture for leather surface defects and thickness, comprising a base (1) and a fan (30), characterized in that: A workbench (2) is connected to the top of the base (1), and a top frame (3) is connected to the top of the workbench (2). An extension block (4) is connected to the top of the top frame (3), and a connecting plate (5) is connected to the bottom of the extension block (4). Telescopic rods (6) are connected to both sides of the bottom of the connecting plate (5), and a contact element (7) is connected to the bottom of the telescopic rods (6). A first spring (8) is sleeved on the surface of the telescopic rods (6). A first upright plate (9) is connected to both ends of one side of the workbench (2). A conveying roller (10) and a driven roller (11) are rotatably arranged between the first upright plates (9), and the conveying roller (10) and the driven roller (11) are arranged vertically. One of the first upright plates (9) is connected to a motor frame (12) on one side, and a motor (13) is connected to the top of the motor frame (12). Both of the first upright plates (9) have through grooves (14) on their upper half surfaces. The driven roller (11) is slidably disposed inside the through groove (14). A sliding plate (15) is slidably disposed above the driven roller (11) inside the through groove (14). A second spring (16) is connected to the top of the sliding plate (15) inside the through groove (14). The other two ends of the worktable (2) are connected to second upright plates (17). An upper rotating roller (18) and a lower rotating roller (19) are rotatably disposed between the second upright plates (17).
2. The intelligent detection fixture for leather surface defects and thickness according to claim 1, characterized in that: The upper rotating roller (18) and the lower rotating roller (19) are both connected to the rotating shaft surfaces with transmission gears (20), and the two transmission gears (20) mesh with each other. The rotating shaft of the lower rotating roller (19) passes through one side of the second vertical plate (17), and the rotating shaft surface of the lower rotating roller (19) and the output end surface of the motor frame (12) are both connected to pulleys (21), and a transmission belt (22) is sleeved between the two pulleys (21).
3. The intelligent detection fixture for leather surface defects and thickness according to claim 1, characterized in that: The bottom of the contact (7) is provided with a plurality of first placement slots (23), and an upper detection sensor (24) is connected inside each of the plurality of first placement slots (23). The top of the worktable (2) is provided with a plurality of second placement slots (25) located below the contact (7), and a lower detection sensor (26) is connected inside each of the plurality of second placement slots (25). The plurality of second placement slots (25) and the lower detection sensor (26) are arranged opposite to each other.
4. The intelligent detection fixture for leather surface defects and thickness according to claim 1, characterized in that: Both telescopic rods (6) are equipped with distance sensors (27).
5. The intelligent detection fixture for leather surface defects and thickness according to claim 1, characterized in that: The bottom of the workbench (2) is provided with a first cavity (281) at the top of the base (1). The workbench (2) is provided with a second cavity (28) inside, and the first cavity (281) and the second cavity (28) are interconnected. The top of the workbench (2) is provided with a plurality of through holes (29) above the second cavity (28). The fan (30) is set on the ground and its output end extends into the base (1). A heating component (31) is connected to one side of the base (1) and its output end extends into the base (1).
6. The intelligent detection fixture for leather surface defects and thickness according to claim 1, characterized in that: Four reinforcing rods (32) are provided between the bottom of the workbench (2) and the perimeter of the base (1).
7. The intelligent detection fixture for leather surface defects and thickness according to claim 1, characterized in that: A control panel (33) is connected to one side of the top frame (3), and the control panel (33) is electrically connected to the upper detection sensor (24), the lower detection sensor (26), the distance sensor (27), the fan (30), and the heating component (31).