Shoe material inspection device

Abstract

The application discloses a shoe material inspection device, which comprises a machine table, a cabin body, an input area and an output area, a conveying unit, a first inspection area and a second inspection area. The cabin body extends along the first direction, and the two ends of the cabin body are respectively provided with the input area and the output area. The conveying unit extends to the input area and the output area through a conveying belt to convey the shoe material from the input area to the output area. The first inspection area and the second inspection area are arranged between the input area and the output area. The first inspection area is used for capturing single shoe material images by a first light visual inspection module for inspection. The second inspection area is used for pairing single shoe materials into double shoe materials by a first blocking unit, and capturing double shoe material images by a second light visual inspection module for inspection. The single shoe material and the double shoe material are double inspected, and the quality inspection accuracy is improved.

Description

Technical Field

[0001] This invention relates to the field of shoe production inspection equipment, and in particular to a shoe material inspection device that can separately inspect single-foot shoe materials and paired shoe materials. Background Technology

[0002] After shoe production is completed, the surface and processed areas need to be inspected for quality to prevent defective shoes from entering the market. Traditional inspection methods rely on manual visual inspection to screen out shoes with quality defects. However, manual inspection is highly dependent on personal experience, and the large workload can easily cause visual fatigue in inspectors, leading to missed inspections or even misjudgments, seriously affecting the accuracy of quality inspection.

[0003] Based on this, the industry has introduced equipment for detecting defects in shoes, such as: 1. A 3D inspection machine for shoe soles, wherein the inspection unit captures the corresponding model mark and shoe sole, the control unit selects the corresponding standard size according to the model information, and calculates a set of inspection dimensions related to the corresponding shoe sole based on the size information, so as to determine whether the shoe sole size conforms to the standard.

[0004] 2. A surface defect detection device for slippers, wherein a single slipper is fixed and conveyed by a conveyor belt, and one side of the slipper is automatically detected by an image acquisition unit and an infrared marking mechanism. After the detection is completed, the slipper is flipped over to detect the reverse side, eliminating the need for manual inspection by staff.

[0005] Although the aforementioned equipment can replace manual inspection, it can only perform quality inspection on the materials of a single shoe. It cannot further inspect whether the size and shape of the materials of the left and right shoes are consistent after the materials are paired together, thus leaving a blind spot in quality inspection.

[0006] Therefore, a new technical solution needs to be researched to address the above problems. Summary of the Invention

[0007] In view of this, the present invention addresses the deficiencies of the existing technology, and its main objective is to provide a shoe material inspection device that enables dual inspection of single shoe materials and paired shoe materials, thereby improving the accuracy of quality inspection.

[0008] To achieve the above objectives, the present invention adopts the following technical solution: A shoe material inspection device, comprising: The machine tool is equipped with a cabin, and the two ends of the cabin extending along a first direction are respectively provided with an input area and an output area; The conveying unit has a conveyor belt disposed within the chamber, the conveyor belt extending along the first direction to the input area and the output area respectively, for conveying a plurality of shoe materials from the input area to the output area; The cabin is divided into a first inspection area and a second inspection area between the input area and the output area. The first inspection area is equipped with a first light vision inspection module, which captures an image of a single shoe material in the first inspection area with the help of a light source for inspection of the single shoe material. The second inspection area is equipped with a second light vision inspection module and a first blocking unit. The first blocking unit is used to intercept the single shoe materials transported from the first inspection area to the second inspection area and pair them into pairs of shoe materials, so that the second light vision inspection module can capture an image of the paired shoe materials in the second inspection area with the help of a light source for inspection of the paired shoe materials.

[0009] As a preferred option, it also includes: The control unit is signal-connected to the transmission unit, the first light vision inspection module, the second light vision inspection module, and the first blocking unit, and pre-stores multiple single-foot shoe material inspection standards and multiple paired shoe material inspection standards. The control unit receives the single-foot shoe material image returned by the first light vision inspection module and determines whether the single-foot shoe material meets the single-foot shoe material inspection standards. When it is determined that the single-foot shoe material meets the single-foot shoe material inspection standards, the control unit further drives the first blocking unit and the second light vision inspection module to determine whether the paired shoe material meets the paired shoe material inspection standards based on the paired shoe material image returned by the second light vision inspection module.

[0010] As a preferred embodiment, the control unit has a deep convolutional neural network for recognizing and processing the single-foot shoe material image and the paired shoe material image and recording the detection results.

[0011] As a preferred embodiment, a defective product rejection area is further defined between the second inspection area and the output area. The defective product rejection area is equipped with a second blocking unit and a pushing unit, which are respectively signal-connected to the control unit. The second blocking unit is located between the defective product rejection area and the output area to intercept single or double shoe materials that are determined to be defective by the control unit, and the pushing unit pushes them to the defective product collection area in a second direction that is perpendicular to the first direction.

[0012] As a preferred embodiment, the first light visual inspection module and the second light visual inspection module each include at least one multiple light source group and at least one image capturing module.

[0013] As a preferred embodiment, the multiple light source group includes one or a combination of at least two of the following: a tri-color mixed light source, an ultraviolet light source, and an infrared light source.

[0014] As a preferred embodiment, the first blocking unit and the second blocking unit respectively include a blocking member and a driving member. The blocking member spans across the conveyor belt and is driven by the driving member to move up and down along a third direction perpendicular to the first direction.

[0015] As a preferred embodiment, the ejection unit includes a lateral drive module and a pusher, wherein the lateral drive module is disposed on the machine platform and drives the pusher to reciprocate along the second direction.

[0016] As a preferred embodiment, the first inspection area, the second inspection area, and the defective product area are each equipped with at least one position sensor connected to the control unit to sense whether the shoe material is in place.

[0017] As a preferred embodiment, the conveyor belt is provided with a plurality of shoe material placement and positioning lines at intervals.

[0018] Compared with the prior art, the present invention has obvious advantages and beneficial effects. Specifically, as can be seen from the above technical solution, it mainly solves the problem of blind spots in the quality inspection of paired shoe materials by setting up a first inspection area and a second inspection area and inspecting single shoe materials and paired shoe materials respectively by image capture. In addition, the control unit is equipped with a deep convolutional neural network to record the detection results and automatically learn the inspection samples to improve the accuracy and efficiency of quality inspection.

[0019] To more clearly illustrate the structural features and effects of the present invention, the present invention will be described in detail below with reference to the accompanying drawings and specific embodiments. Attached Figure Description

[0020] Figure 1 This is a perspective view of a shoe material inspection device according to an embodiment of the present invention; Figure 2 yes Figure 1 Sectional view at point AA; Figure 3 yes Figure 1 Sectional view at point BB; Figure 4 yes Figure 1 Sectional view at point CC.

[0021] Figure Identification: Machine 100, Cabin 101, Input Area 102, First Inspection Area 103, Second Inspection Area 104, Defective Product Rejection Area 105, Output Area 106, Support 107, Conveying Unit 1, Conveyor Belt 11, Shoe Material Placement Positioning Line 12, First Light Visual Inspection Module 2, Second Light Visual Inspection Module 3, Multiple Light Source Group 21, Multiple Light Source Group 31, Image Capture Module 22, Image Capture Module 32, First Blocking Unit 4, Blocking Component 41, Blocking Component 61, Driving Component 42, Driving Component 62, Control Unit 5, Second Blocking Unit 6, Pushing Unit 7, Lateral Driving Module 71, Pushing Component 72, Defective Product Collection Area 8, First Position Sensor 91, Second Position Sensor 92, Third Position Sensor 93, First Direction X, Second Direction Y, Third Direction Z. Detailed Implementation

[0022] Please refer to Figures 1 to 4 As shown, it illustrates the specific structure of an embodiment of the present invention.

[0023] In the description of this invention, it should be noted that the terms "upper", "lower", "left", "right", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limiting this invention.

[0024] Please refer to Figures 1 to 4, which show a preferred embodiment of the shoe material inspection device provided by the present invention, which mainly includes a machine base 100 and a conveying unit 1, wherein: As shown in Figure 1, the machine 100 has a certain length, and its upper surface is provided with a compartment 101 with an internal space. An input area 102 and an output area 106 are respectively provided at both ends of the compartment 101 extending along a first direction X. The conveying unit 1 has a power-driven conveyor belt 11. The conveyor belt 11 extends along the first direction X to the input area 102 and the output area 106, forming an inlet for placing shoe materials and an outlet for outputting shoe materials.

[0025] The cabin 101 has a first inspection area 103 and a second inspection area 104 defined between the input area 102 and the output area 106. In this embodiment, as shown in Figure 2, the first inspection area 103 and the second inspection area 104 are located inside the cabin 101. The first inspection area 103 is equipped with a first light-based visual inspection module 2. This module, in conjunction with a light source, captures an image of a single shoe material transported to the first inspection area 103 via the transmission unit 1, for inspection of the single shoe material. The second inspection area 104 is equipped with a second light-based visual inspection module 3 and a first blocking unit 4. The first blocking unit 4 intercepts single shoe materials transported from the first inspection area 103 to the second inspection area 104 and pairs them into a pair, so that the second light-based visual inspection module 3, in conjunction with a light source, captures an image of the pair of shoe materials for inspection.

[0026] Further explanation is provided in Figures 2 and 3. The first light visual inspection module 2 and the second light visual inspection module 3 each include at least one multi-light source group 21 and 31, and at least one image capturing module 22 and 32. The multi-light source group 21 and 31 includes one or more combinations of a three-color mixed light source, an ultraviolet light source, and an infrared light source, providing optimal imaging effects for different defects such as excess glue, cleanliness, and loose threads. The three-color mixed light source is preferably an RGB LED, the ultraviolet light source is preferably an ultraviolet lamp, and the infrared light source is preferably an infrared lamp. In other feasible embodiments, other devices providing the same light source may also be used, and this invention is not limited thereto. The image capturing modules 22 and 32 have a camera (not shown) for capturing images of the shoe materials within the inspection area for inspection. As shown in Figures 2 and 3, the housing 101 contains a plurality of brackets 107 for assembling the multi-light source groups 21 and 31 and the image capturing modules 22 and 32. In this embodiment, the first inspection area 103 and the second inspection area 104 are respectively equipped with three sets of multi-light source groups 21 and 31 and three sets of image capturing modules 22 and 32, which can acquire images from multiple perspectives to ensure that there are no blind spots in the inspection of shoe materials.

[0027] As shown in Figure 1, the shoe material inspection device also includes a control unit 5. The control unit 5 can be located on one side of the machine 100 and signal-connected to control the transmission unit 1, the first light-visual inspection module 2, the second light-visual inspection module 3, and the first blocking unit 4. Preferably, the control unit 5 pre-stores a plurality of single-foot shoe material inspection standards and a plurality of paired shoe material inspection standards. The single-foot shoe material inspection standards include, but are not limited to, glue overflow detection, cleanliness detection, thread detection, toe tilt detection, and heel tilt detection. The paired shoe material inspection standards include, but are not limited to, toe height difference detection, heel height difference detection, and color difference detection. Further, the control unit 5 has a deep convolutional neural network that automatically identifies and processes the image data returned by the first light-visual inspection module 2 and the second light-visual inspection module 3 and records the results. It also has the ability to automatically learn inspection samples; as the inspection data increases, it can continuously optimize the recognition rate and reduce missed detections or misjudgments caused by manual visual inspection.

[0028] The control unit 5 receives the single-foot shoe material image returned by the first light vision inspection module 2, and uses the deep convolutional neural network to identify and process the image, comparing it with the single-foot shoe material detection standards to determine whether the single-foot shoe material meets the standards. When it is determined that it meets the single-foot shoe material detection standards, the control unit 5 further drives the first blocking unit 4 and the second light vision inspection module 3. The first blocking unit 4 intercepts the single-foot shoe material that passes through the first inspection area 103, causing the single-foot shoe material to remain in the second inspection area 104 and be paired into a pair. The second light vision inspection module 3 then captures a pair of shoe material images and returns them to the control unit 5. The control unit 5 identifies and processes the pair of shoe material images and compares them to determine whether they meet the pair of shoe material standards. When the pair of shoe materials is determined to meet the standards, the first blocking unit 4 releases the blockage of the pair of shoe materials, and the conveyor belt 11 transports the pair of shoe materials to the output area 106 for the next production step.

[0029] To automate the rejection of substandard shoe materials, as shown in Figure 2, the shoe material inspection device also includes a defective product rejection area 105 between the second inspection area 104 and the output area 106. Referring to Figure 4, the defective product rejection area 105 is equipped with a second blocking unit 6 and a push-out unit 7, which are signal-connected to the control unit 5. The second blocking unit 6 is located between the defective product rejection area 105 and the output area 106, while the push-out unit 7 is located on one side of the conveyor belt 11. A defective product collection area 8 is located on the other side of the conveyor belt 11 opposite to the push-out unit 7. When the control unit 5 determines that the single-shoe material or the pair of shoe materials does not meet the corresponding standard after comparison, and identifies it as a defective product, the control unit 5 drives the second blocking unit 6 to intercept the single-shoe material or the pair of shoe materials identified as defective products. The pushing unit 7 then pushes the defective product to the defective product collection area along a second direction Y that is perpendicular to the first direction X, thereby separating the defective products from the qualified products and preventing the defective products from being mixed with the qualified products and affecting the accuracy of quality inspection.

[0030] To further explain, the first blocking unit 4 and the second blocking unit 6 have the same structure. As shown in Figures 3 and 4, each of the first blocking unit 4 and the second blocking unit 6 includes a corresponding blocking member 41 (61) and a driving member 42 (62). The blocking member 41 (61) is a long plate that spans across the conveyor belt 11 and is driven by the driving member 42 (62) to move up and down along a third direction Z perpendicular to the first direction X, in order to complete the interception or release action. In this embodiment, the driving member 42 (2) is a cylinder driver. In other feasible embodiments, it can also be a worm gear structure, a hydraulic driver, or a screw drive device, etc., which can realize up and down driving. This invention is not limited to these.

[0031] The ejection unit 7 includes a lateral drive module 71 and a pusher 72. The lateral drive module 71 is mounted on the machine base 100 and is positioned opposite to the defective product collection area 8. The pusher 72 is a long plate-shaped component positioned below the lateral drive module 71. The lateral drive module 71 is preferably a telescopic cylinder, but it can also be any other power device capable of driving the pusher 72 to move laterally; this invention is not limited thereto.

[0032] Furthermore, the first inspection area 103, the second inspection area 104, and the defective product rejection area 105 are each equipped with at least one positioning sensor. These positioning sensors are all signal-connected to the control unit 5 to sense whether the shoe material has been conveyed to the corresponding area. The positioning sensor can be an infrared sensor or a laser sensor; this invention is not limited thereto. These positioning sensors act as activation switches for their respective areas, configured to precisely trigger the activation of each area and execute the corresponding shoe material inspection or defective product rejection operation.

[0033] Please refer to Figure 2. The first inspection area 103 is equipped with a first positioning sensor 91 on each side of the conveyor belt 11. When the conveyor belt 11 conveys a single shoe material to the first inspection area 103, the first positioning sensor 91 senses that the single shoe material has reached its position and outputs a positioning signal to the control unit 5. The control unit 5 pauses the operation of the conveyor belt 11 and activates the first light-based visual inspection module 2 to capture an image of the single shoe material and transmit it back to the control unit 5 for inspection.

[0034] The second inspection area 104 is equipped with two second positioning sensors 92 on both sides of the conveyor belt 11. When the second positioning sensor 92 senses that the pair of shoe materials is in place, it outputs a positioning signal to the control unit 5. The control unit 5 then stops the operation of the conveyor belt 11 and activates the second light vision inspection module 3 to capture an image of the pair of shoe materials and send it back to the control unit 5 to inspect the pair of shoe materials.

[0035] The defective product rejection area 105 is equipped with a third positioning sensor 93 on each side of the conveyor belt 11. When either the first inspection area 103 or the second inspection area 104 determines that the shoe material is defective, the control unit 5 activates the third positioning sensor 93 to sense the position of the defective shoe material (single or double). When the third positioning sensor 93 senses that the defective product has entered the defective product rejection area 105, it outputs a positioning signal to the control unit 5, which then activates the defective product rejection area 105 to perform the defective product rejection action. Specifically, the second blocking unit 6 moves downward to intercept the defective product, and then drives the ejection unit 7 to move laterally along the second direction Y to push the defective product to the defective product collection area 8, so as to accurately reject the defective product and ensure the stable quality level of the shoe material.

[0036] In addition, the conveyor belt 11 is also provided with a plurality of shoe material placement positioning lines 12 at intervals to ensure that the shoe materials are placed in a uniform position and to avoid the accuracy and reliability of the inspection results being affected by the deviation in the placement position.

[0037] In practical application, as shown in Figure 2, the present invention, composed of the above-described components, involves workers placing the shoe materials to be inspected alternately on the shoe material placement positioning line 12 of the conveyor belt 11 located in the input area 102, with the left and right shoe materials facing the same direction. The conveyor belt 11 transports a single shoe material to the first inspection area 103. After the first positioning sensor 91 senses that the single shoe material has arrived, it triggers the control unit 5 to stop the conveyor belt 11 from transporting, and controls the first light visual inspection module 2 to capture and transmit an image of the single shoe material back to the control unit 5 to determine whether the single shoe material meets the standard.

[0038] When the control unit 5 determines that the single shoe material meets the standard, it restarts the conveyor belt 11 to continue conveying and activates the first blocking unit 4. The single shoe material moves to the second inspection area 104 and is blocked by the first blocking unit 4, thus remaining in the second inspection area 104. When the second positioning sensor 92 senses that there are two paired single shoe materials in the second inspection area 104, it triggers the control unit 5 to stop the conveyor belt 11 again and activates the second light visual inspection module 3 to capture and transmit an image of a paired shoe material back to the control unit 5 to determine whether the paired shoe material meets the standard.

[0039] When the control unit 5 determines that the pair of shoe materials meets the standard, the control unit 5 drives the first blocking unit 4 to release the block, and the conveyor belt 11 transports the pair of shoe materials to the output area 106 to enter the next production process.

[0040] If the control unit 5 determines that the single or double shoe material does not meet the standard, the control unit 5 activates the third positioning sensor 93, and the conveyor belt 11 transports the single or double shoe material to the defective product rejection area 105. When the third positioning sensor 93 senses that a defective product has entered the defective product rejection area 105, it triggers the control unit 5 to control the second blocking unit 6 to descend along the third direction Z, trapping the defective product in the defective product rejection area 105. Then, the push-out unit 7 is activated to drive the pusher to push the defective product into the defective product collection area 8 along the second direction, so as to separate good products from defective products.

[0041] In summary, the shoe material inspection device provided by the present invention achieves the following improvements: First, it enables dual inspection of single-foot shoe materials and paired shoe materials; the invention uses a first blocking unit to intercept single-foot shoe materials in the second inspection area and pair them into pairs, allowing the shoe material inspection device to further detect the height difference, color difference, etc. of the left and right feet, solving the blind spot of inspection in the past where it was impossible to confirm whether the paired shoe materials were consistent, and greatly improving the accuracy of quality inspection.

[0042] Secondly, it improves detection accuracy and efficiency. The control unit of this invention is equipped with a deep convolutional neural network, which can automatically recognize, process images, and record results, facilitating the tracing of problems and their causes, and helping to improve production processes. Furthermore, the control unit has the ability to automatically learn from test samples. As the amount of detection data increases, it can continuously optimize the recognition rate, reducing missed detections or misjudgments caused by manual visual inspection. Moreover, standardized automatic comparison is not limited by personal experience, effectively preventing problems such as subjective judgment differences and missed detections.

[0043] Third, it achieves fully automated sorting and rejection processes; the invention features a dedicated defective product rejection area, which, combined with a second blocking unit and a push-out unit, separates good and bad products. Furthermore, products identified as defective by the control unit are automatically pushed to the collection area, effectively preventing defective and qualified products from mixing and ensuring stable product quality ultimately reaching the market.

[0044] The above description is merely a preferred embodiment of the present invention and does not constitute any limitation on the technical scope of the present invention. Therefore, any minor modifications, equivalent changes, and alterations made to the above embodiments based on the technical essence of the present invention shall still fall within the scope of the technical solution of the present invention.

Claims

1. A shoe material inspection device, characterized in that, include: The machine tool is equipped with a cabin, and the two ends of the cabin extending along a first direction are respectively provided with an input area and an output area; The conveying unit has a conveyor belt disposed within the chamber, the conveyor belt extending along the first direction to the input area and the output area respectively, for conveying a plurality of shoe materials from the input area to the output area; The cabin is divided into a first inspection area and a second inspection area between the input area and the output area. The first inspection area is equipped with a first light vision inspection module, which captures an image of a single shoe material in the first inspection area with the help of a light source for inspection of the single shoe material. The second inspection area is equipped with a second light vision inspection module and a first blocking unit. The first blocking unit is used to intercept the single shoe materials transported from the first inspection area to the second inspection area and pair them into pairs of shoe materials, so that the second light vision inspection module can capture an image of the paired shoe materials in the second inspection area with the help of a light source for inspection of the paired shoe materials.

2. The shoe material inspection device according to claim 1, characterized in that, Also includes: The control unit is signal-connected to the transmission unit, the first light vision inspection module, the second light vision inspection module, and the first blocking unit, and pre-stores multiple single-foot shoe material inspection standards and multiple paired shoe material inspection standards. The control unit receives the single-foot shoe material image returned by the first light vision inspection module and determines whether the single-foot shoe material meets the single-foot shoe material inspection standards. When it is determined that the single-foot shoe material meets the single-foot shoe material inspection standards, the control unit further drives the first blocking unit and the second light vision inspection module to determine whether the paired shoe material meets the paired shoe material inspection standards based on the paired shoe material image returned by the second light vision inspection module.

3. The shoe material inspection device according to claim 2, characterized in that, The control unit has a deep convolutional neural network for recognizing and processing the single-foot shoe material image and the paired shoe material image and recording the detection results.

4. The shoe material inspection device according to claim 2, characterized in that, A defective product rejection area is also defined between the second inspection area and the output area. The defective product rejection area is equipped with a second blocking unit and a push-out unit, which are respectively signal-connected to the control unit. The second blocking unit is located between the defective product rejection area and the output area to intercept single or double shoe materials that are determined to be defective by the control unit, and the push-out unit pushes them to the defective product collection area in a second direction that is perpendicular to the first direction.

5. The shoe material inspection device according to claim 1, characterized in that, The first lighting visual inspection module and the second lighting visual inspection module each include at least one multi-light source group and at least one image capturing module.

6. The shoe material inspection device according to claim 5, characterized in that, The multiple light source group includes one or at least two of the following: a tri-color mixed light source, an ultraviolet light source, and an infrared light source.

7. The shoe material inspection device according to claim 4, characterized in that, The first blocking unit and the second blocking unit each include a blocking member and a driving member. The blocking member spans across the conveyor belt and is driven by the driving member to move up and down along a third direction perpendicular to the first direction.

8. The shoe material inspection device according to claim 4, characterized in that, The ejection unit includes a lateral drive module and a pusher. The lateral drive module is mounted on the machine platform and drives the pusher to reciprocate along the second direction.

9. The shoe material inspection device according to claim 4, characterized in that, The first inspection area, the second inspection area, and the defective product area are each equipped with at least one position sensor connected to the control unit to sense whether the shoe material is in place.

10. The shoe material inspection device according to claim 1, characterized in that, The conveyor belt is provided with a plurality of shoe material placement and positioning lines at intervals.

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