A sole gluing quality detection device

Abstract

The application discloses a sole gluing quality detection equipment, which comprises a rack, a conveying belt, a camera assembly and a light source assembly. The conveying belt is installed on the rack and has a detection position above. The camera assembly is arranged above the detection position in a spaced surrounding manner, and the lens is downwardly inclined and aligned with the detection position below. The light source assembly is connected with the camera assembly, and the light source assembly comprises white light, blue light and UV light. The light emitted by the light source assembly is directed to the detection position and irradiated on the sole to be detected. Through cooperation of the camera assembly and the light source assembly, the images of each gluing detection surface of the sole can be accurately taken, the recognition difficulty of broken glue, missing glue and overflow glue can be reduced, the detection precision of the sole gluing quality detection equipment is improved, and the detection of the broken glue, the missing glue and the overflow glue on the inner and outer sides of the sole is efficiently and accurately realized.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of intelligent manufacturing of footwear, and particularly relates to a shoe sole glue coating quality detection device. BACKGROUND

[0002] In the shoemaking process, the shoe sole glue coating cannot be guaranteed whether by manual or machine, and when unqualified products occur, they need to be repaired, which not only affects the production efficiency of enterprises, but also affects the reputation of enterprises when such shoes flow into the market.

[0003] Before the shoe sole is bonded with the upper, the shoe sole needs to be glued first. The current gluing operation is mainly manual brushing and non-contact robot spraying. After gluing, the shoe sole gluing area needs to be detected to check whether the outside of the shoe sole gluing area is overflowed with glue and whether the inside of the shoe sole gluing area is broken or lacks glue.

[0004] For shoe sole glue quality detection, the market has a method of manual visual observation to ensure product quality. This method is not only easily affected by the state of the worker, but also harmful to human health due to the toxic gases volatilized from the glue. The existing equipment identifies the broken glue, missing glue and overflowed glue of the shoe sole by taking pictures. However, only cameras and ordinary light sources are arranged on two sides, which cannot detect the glue coating quality in all directions and may cause missed detection. In addition, it is difficult to distinguish the glue coating area from other areas of the shoe sole in the picture taken after the shoe sole is illuminated by the ordinary light source, and the identification is difficult, so it is difficult to efficiently and accurately detect the broken glue, missing glue and overflowed glue of the inside and outside of the shoe sole. SUMMARY

[0005] The present application overcomes at least one of the above problems and provides a shoe sole glue coating quality detection device.

[0006] The technical scheme adopted by the present application is as follows:

[0007] The present application provides a shoe sole glue coating quality detection device, which comprises a rack, a conveyor belt, a camera assembly and a light source assembly.

[0008] The conveyor belt is installed on the rack, the conveyor belt is made of light-transmitting material, and the conveyor belt is used for conveying the shoe sole. The conveyor belt has a detection position above it.

[0009] The camera assembly comprises a plurality of industrial cameras, at least including a first industrial camera, a second industrial camera, a third industrial camera and a fourth industrial camera. Each industrial camera is arranged above the detection position in a spaced manner. The lens of the camera assembly is aligned with the detection position below.

[0010] The first industrial camera is used for photographing the left outer side and the right inner side of the shoe sole.

[0011] The second industrial camera is used for shooting the back inner side of the shoe sole;

[0012] The third industrial camera is used for shooting the right outer side and the left inner side of the shoe sole;

[0013] The fourth industrial camera is used for shooting the front inner side of the shoe sole;

[0014] The light source assembly comprises a first light source, a second light source and a third light source;

[0015] The first light source is located on the inner side of the conveying belt and below the detection position, and is used for emitting bottom light to the shoe sole on the detection position, wherein the bottom light is white light;

[0016] The second light source is arranged below the camera assembly and above the detection position, and is used for emitting irradiation light to at least the left outer side and the right outer side of the shoe sole on the detection position, wherein the second light source is blue light;

[0017] The third light source is arranged below the camera assembly and above the detection position, and is used for emitting detection light to the front outer side, the front inner side, the back outer side, the back inner side, the left outer side, the left inner side, the right outer side and the right inner side of the shoe sole on the detection position, wherein the third light source is UV light;

[0018] The light source assembly is downwardly inclined, and the emitted light is directed to the detection position and irradiated on the shoe sole to be detected.

[0019] In actual use, the installation height of the camera assembly relative to the conveying belt is 30-40 cm, the interval between the first industrial camera and the third industrial camera is 60 cm, the interval between the second industrial camera and the fourth industrial camera is 60 cm, and the inclination angle of the camera assembly is 45-60 degrees; the installation height of the light source assembly relative to the conveying belt is 13-16 cm, the inclination angle of the light source assembly is 5-10 degrees, the exposure of the first light source is 2000-10000, the exposure of the second light source is 400-1500, and the exposure of the third light source is 1200-10000.

[0020] In actual use, when the conveying belt transmits the shoe sole (coated with fluorescent agent-containing glue) to be detected to the detection position:

[0021] The first light source is turned on and the other light sources are turned off, and the camera assembly shoots the shoe sole to be detected from all directions to collect the right inner detection surface image of the shoe sole, the tail inner detection surface image of the shoe sole, the left inner detection surface image of the shoe sole and the front end inner detection surface image of the shoe sole, so as to extract the glue line on the inner side of the shoe sole and calculate the inner side glue coating detection area.

[0022] The second light source on the left side of the sole is turned on, and other light sources are turned off. The camera assembly photographs the sole to be detected from above the left side of the sole, collects the image of the outer detection surface on the left side of the sole, so as to extract the glue line on the outer side of the left side of the sole and calculate the glue detection area on the outer side of the left side of the sole.

[0023] The second light source on the right side of the sole is turned on, and other light sources are turned off. The camera assembly photographs the sole to be detected from above the right side of the sole, collects the image of the outer detection surface on the right side of the sole, so as to extract the glue line on the outer side of the right side of the sole and calculate the glue detection area on the outer side of the right side of the sole.

[0024] The third light source is turned on, and other light sources are turned off. The camera assembly photographs the sole from all directions, detects the glue detection area on the inner side of the sole and the glue detection area on the outer side of the sole, and if the inner side glue detection area appears dark, then there is glue breakage or lack of glue. If the outer side glue detection area appears bright, then there is glue overflow.

[0025] Through at least four industrial cameras cooperating with the light source assembly, a white light source for extracting the glue line on the inner side, a blue light source for extracting the glue line on the outer side, and a UV light source for detecting glue breakage, lack of glue and glue overflow, the images of the glue detection surfaces of the sole can be accurately taken, the detection area can be extracted, and the difficulty of identifying glue breakage, lack of glue and glue overflow is reduced, and the detection accuracy of the glue quality detection equipment of the sole is greatly improved.

[0026] Further, it further comprises an industrial computer, and the industrial computer comprises a detection module and a central control module.

[0027] The detection module is connected with the camera assembly, and is used for extracting the detection area of the image collected by the camera assembly and detecting the extracted detection area for lack of glue and glue overflow.

[0028] The central control module is connected with the detection module, and is used for receiving the detection result signal of the detection module and making processing response to different detection result signals.

[0029] Further, the light source assembly is connected with the camera assembly through the central control module, and the camera assembly controls the stroboscopic of the light source assembly.

[0030] The camera assembly controls the stroboscopic of the light source assembly, so that each industrial camera cooperates with the light source to collect the detection image of the sole.

[0031] Further, the camera assembly further comprises a fifth industrial camera and a sixth industrial camera.

[0032] The fifth industrial camera is arranged below the second industrial camera and in front of the detection position, and is used for photographing the front outer side of the sole.

[0033] The sixth industrial camera is arranged below the fourth industrial camera and behind the detection position, and is used for photographing the rear outer side of the shoe sole.

[0034] Further, the camera assembly further comprises a first plane mirror and a second plane mirror.

[0035] The first plane mirror is arranged below the fourth industrial camera and behind the detection position, and the mirror surface is aligned with the detection position, and is used in combination with the second industrial camera to photograph the rear outer side of the shoe sole.

[0036] The second plane mirror is arranged below the second industrial camera and in front of the detection position, and the mirror surface is aligned with the detection position, and is used in combination with the fourth industrial camera to photograph the front outer side of the shoe sole.

[0037] Further, the method for extracting the detection region of the image collected by the camera assembly of the detection module comprises:

[0038] The detection image of the inner and outer sides of the shoe sole is collected, and specifically comprises:

[0039] The camera assembly controls the second light source below the first industrial camera to be bright while other light sources are dark, and the first industrial camera collects the left outer detection surface image of the shoe sole.

[0040] The camera assembly controls the second light source below the third industrial camera to be bright while other light sources are dark, and the third industrial camera collects the right outer detection surface image of the shoe sole.

[0041] The camera assembly controls the second light source below the second industrial camera to be bright while other light sources are dark, and the fifth industrial camera collects the front end outer detection surface image of the shoe sole.

[0042] The camera assembly controls the second light source below the fourth industrial camera to be bright while other light sources are dark, and the sixth industrial camera collects the rear end outer detection surface image of the shoe sole.

[0043] The camera assembly controls the first light source to be bright while other light sources are dark, and the first industrial camera, the second industrial camera, the third industrial camera and the fourth industrial camera respectively collect the right inner detection surface image, the rear end inner detection surface image, the left inner detection surface image and the front end inner detection surface image of the shoe sole.

[0044] Each detection surface image collected by the camera assembly is identified respectively, wherein the shoe sole in the first detection image has a first bright light region and a first light shielding region located in the middle of a second bright light region; and the shoe sole in the second detection image only has a second light shielding region.

[0045] extracting a region of interest in the first image to be detected, the region of interest being a bright area of the sole;

[0046] extracting a region of interest in the second image to be detected, the region of interest being a second light-shielded area of the sole;

[0047] extracting the upper edge glue line in the first bright area on the lower side, and taking the area formed by translating the upper edge glue line downward by a distance as the glue overflow detection area of the lateral side of the sole;

[0048] extracting the upper edge glue line in the second light-shielded area, and taking the area formed by translating the upper edge glue line downward by a distance as the glue shortage or breakage detection area of the medial side of the sole.

[0049] Further, the method for detecting glue shortage and overflow in the extracted detection area includes:

[0050] The method for detecting glue shortage and overflow in the extracted detection area includes:

[0051] The camera assembly controls the third light source to be bright and the other light sources to be dark, and the first industrial camera, the second industrial camera, the third industrial camera, the fourth industrial camera, the fifth industrial camera, and the sixth industrial camera respectively capture the sole image corresponding to the detection area;

[0052] Detecting the detection area in the sole image, and detecting the corresponding glue overflow, glue shortage, or glue breakage in the detection area.

[0053] Further, first, extract the pixel points with sharp pixel changes in the first bright area to obtain the outer contour of the first bright area;

[0054] extract the pixel points with sharp pixel changes in the second light-shielded area to obtain the outer contour of the second light-shielded area;

[0055] According to the position coordinates of all points on the outer contour, obtain a position coordinate array;

[0056] Screen the minimum column value in the position coordinate array, and obtain the minimum column value index in the position coordinate array; if the minimum index is greater than 0, rearrange and combine the position coordinate array to obtain a new position array, so that the minimum index coordinate is the first point in the new position array; if the minimum index is equal to 0, rearrange and combine the position coordinate array to obtain a new position array that is consistent with the original position array; determine the sorting rule of the new position array, which can be clockwise or counterclockwise; if the sorting rule is clockwise, the position array needs to be sorted in reverse when the sorting rule is counterclockwise; if the sorting rule is counterclockwise, the position array also needs to be sorted in reverse when the sorting rule is clockwise;

[0057] The minimum circumscribed rectangle of the first light area is calculated, a length direction retraction size h1 is set, and a width direction lengthening size w1 is set to obtain a new rectangle after transformation;

[0058] The minimum circumscribed rectangle of the second light area is calculated, a length direction retraction size h1 is set, and the minimum circumscribed rectangle is translated along the short axis direction by a distance d1 to obtain a new rectangle after transformation.

[0059] According to the intersection of the new rectangle after transformation and the first light area, four points A, B, C, and D are set, in the coordinate axis, AB and CD are set as the column direction, AD and BC are set as the row direction, the four points are divided into two groups according to the column value, two points BC with large column values are set as the first group, and two points AD with small column values are set as the second group, B is the point with small row value in the first group, and A is the point with small row value in the second group, and the position sequence numbers of A and B in the new position array are obtained respectively;

[0060] All point sets from A to B of the first light area are recorded to form a curve segment along the sole line, a fixed distance is set, the curve segment is translated downward by the fixed distance to generate a new equidistant parallel segment, the curve segment and the new equidistant parallel segment are connected in a loop to form a detection area, and the detection area is the glue detection area of the outer side of the sole.

[0061] According to the intersection of the new rectangle after transformation and the second light area, two points A and B are set, and the position sequence numbers of A and B in the new position array are determined according to the position coordinates of A and B respectively;

[0062] All point sets from A to B of the second light area are recorded to form a curve segment along the sole line, a fixed distance is set, the curve segment is translated downward by the fixed distance to generate a new equidistant parallel segment, the curve segment and the new equidistant parallel segment are connected in a loop to form a detection area, and the detection area is the glue detection area of the inner side of the sole.

[0063] In actual application, when the detection module receives the image collected by the camera under the illumination of the third light source, automatic glue overflow detection can be performed on the glue overflow detection area of the outer side of the sole, and automatic glue shortage or glue breakage detection can be performed on the glue shortage or glue breakage detection area of the inner side of the sole, when a bright part is detected in the outer side detection area, it is determined that the outer side of the sole overflows with glue, or when a dark part is detected in the inner side detection area, it is determined that the inner side of the sole is short of glue, at this time, the detection module will generate an NG signal and transmit the NG signal to the central control module.

[0064] Further, the inductor is arranged in front of the detection position, and the inductor is connected with the central control module, and the inductor is used for sensing whether the shoe sole to be detected reaches the detection position.

[0065] When the inductor detects that the shoe sole reaches the detection position, the central control module controls the camera assembly to cooperate with the light source assembly to collect the image of the shoe sole, and transmits the collected image to the detection module for glue defect, glue breakage and glue overflow detection.

[0066] Further, the pusher is installed on the rack and connected with the central control module, and the pusher is used for pushing the unqualified shoe sole from the conveying belt to the specified position; the pusher is a screw rod air cylinder.

[0067] In actual application, the pusher can also be an electric push rod.

[0068] Further, the storage box is installed on the opposite side of the pusher and is arranged correspondingly with the pusher, and is used for receiving the unqualified shoe sole pushed by the pusher.

[0069] In actual application, when the central control module receives the NG signal, the pusher will be controlled to push the unqualified shoe sole into the storage box, which is convenient for workers to repair or operate subsequently.

[0070] Further, the button box, the display and the warning light are arranged, the button box is installed on the rack and is used for quick operation and control of the equipment, the display and the warning light are installed on the sealing plate, the display is connected with the industrial computer, the display is used for real-time display of the detection result and the running state, and the warning light is connected with the industrial computer and is used for prompting different detection results and equipment running states.

[0071] In actual application, the detection result of the detection module of the industrial computer can be displayed on the display in real time, so that the workers can understand and confirm the detection result.

[0072] Further, the electrical cabinet, the motor, the sealing plate installed on the rack and the magnetic door are arranged, the motor is installed on the rack, the motor is in transmission connection with the conveying belt, the electrical cabinet is used for integrated unified management and protection of various electrical elements, and the electrical cabinet is connected with the industrial computer, the button box, the pusher, the light source assembly, the camera assembly and the motor respectively.

[0073] The sealing plate and the magnetic door are used for forming a semi-closed space, the semi-closed space is located above the conveying belt, and the inner circumferential side of the light source assembly and the camera assembly; the sealing plate and the magnetic door are light-proof materials, and a door handle buckle is arranged on the magnetic door.

[0074] The opaque material facilitates the use of camera components and light source components in a semi-enclosed space for image acquisition.

[0075] The beneficial effects of this invention are:

[0076] (1) By using at least four industrial cameras in conjunction with light source components, a white light source for extracting the glue line along the inner side, a blue light source for extracting the glue line along the outer side, and a UV light source for detecting glue breakage, missing glue, and overflow, images of each glue-coated surface of the sole can be accurately captured, facilitating the extraction of the detection area and thereby reducing the difficulty of identifying glue breakage, missing glue, and overflow, and greatly improving the detection accuracy of the sole glue quality detection equipment.

[0077] (2) At least four industrial cameras are used to capture images around the sole of the shoe, avoiding blind spots and reducing the occurrence of missed detections;

[0078] (3) The detection module can automatically acquire the detection area of ​​the images captured by each industrial camera, and automatically detect the glue breakage and glue shortage on the inner side of the shoe sole and the glue overflow on the outer side. The operation is more convenient and greatly improves the industrial automation process of shoe sole glue quality detection. Attached Figure Description

[0079] Figure 1 This is an axonometric view of the hidden sealing plate and magnetic door of the shoe sole adhesive quality inspection equipment in Example 1;

[0080] Figure 2 This is a top view of the concealed sealing plate and magnetic door of the shoe sole adhesive quality inspection equipment in Example 1;

[0081] Figure 3 This is an axonometric view of the hidden sealing plate and magnetic door of the shoe sole adhesive quality inspection equipment in Example 2;

[0082] Figure 4 This is a top view of the concealed sealing plate and magnetic door of the shoe sole adhesive quality inspection equipment in Example 2;

[0083] Figure 5 This is an axonometric view of the shoe sole adhesive quality inspection equipment without concealed sealing plate and magnetic door;

[0084] Figure 6 This is a schematic diagram of a shoe sole taken by a shoe sole coating quality inspection device under a second light source;

[0085] Figure 7 This is a schematic diagram of the detection module extracting the region of interest from the image captured by the industrial camera;

[0086] Figure 8This is a schematic diagram showing the position sequence of the region of interest processed by the detection module on the outer side;

[0087] Figure 9 This is a schematic diagram showing the new position sequence number for the processing of the region of interest on the outer side by the detection module;

[0088] Figure 10 This is a schematic diagram of a shoe sole adhesive quality inspection device under a third light source, showing the actual shoe sole adhesive quality inspection results.

[0089] Figure 11 This is a schematic diagram showing the position sequence of the detection module's processing of the region of interest on the inner side.

[0090] Figure 12 This is a schematic diagram showing the new position sequence number of the detection module for processing the region of interest on the inner side.

[0091] Figure 13 This is a schematic diagram of a shoe sole image taken by combining a second industrial camera with a first plane mirror.

[0092] The labels for the attached figures are as follows:

[0093] 1. Frame; 2. Pusher; 3. Camera assembly; 3-1. First industrial camera; 3-2. Second industrial camera; 3-3. Third industrial camera; 3-4. Fourth industrial camera; 3-5. Fifth industrial camera; 3-6. Sixth industrial camera; 3-7. First plane mirror; 3-8. Second plane mirror; 4. Conveyor belt; 5. Motor; 6. Light source assembly; 6-1. First light source; 6-2. Second light source; 6-3. Third light source; 7. Detection position; 8. Storage box; 9. Sensor; 10. Industrial computer; 11. Sealing plate; 12. Display; 13. Warning light; 14. Magnetic door; 15. Door handle latch; 16. Button box; 17. Electrical cabinet; 18. Inner side of the rear end of the shoe sole; 19. Outer side of the rear end of the shoe sole. Detailed Implementation

[0094] The present invention will now be described in detail with reference to the accompanying drawings.

[0095] The technical solution adopted in this invention is as follows:

[0096] Example 1

[0097] like Figure 1 , 2 As shown, the present invention provides a shoe sole adhesive quality testing device, including: a frame 1, a conveyor belt 4, a camera assembly 3, and a light source assembly 6;

[0098] The conveyor belt 4 is installed on the frame 1. The conveyor belt 4 is made of light-transmitting material. The conveyor belt 4 is used to convey shoe soles. There is a detection position 7 above the conveyor belt 4.

[0099] The camera assembly 3 includes multiple industrial cameras, including at least a first industrial camera 3-1, a second industrial camera 3-2, a third industrial camera 3-3, and a fourth industrial camera 3-4. Each industrial camera is arranged at intervals around the detection position 7 above it, and the lens of the camera assembly 3 is aimed at the detection position 7 below it.

[0100] The first industrial camera 3-1 is used to photograph the left outer side and the right inner side of the shoe sole;

[0101] The second industrial camera 3-2 is used to photograph the rear inner side of the shoe sole;

[0102] The third industrial camera 3-3 is used to photograph the right outer side and the left inner side of the shoe sole;

[0103] The fourth industrial camera, 3-4, is used to photograph the front inner side of the shoe sole;

[0104] The light source assembly 6 includes: a first light source 6-1, a second light source 6-2, and a third light source 6-3;

[0105] The first light source 6-1 is located inside the conveyor belt 4 and below the detection position 7. It is used to emit a white light to the sole of the shoe at the detection position 7.

[0106] The second light source 6-2 is located below the camera assembly 3 and above the detection position 7, and is used to emit illumination light to at least the left outer side and the right outer side of the sole of the shoe at the detection position 7. The second light source 6-2 is blue light.

[0107] The third light source 6-3 is located below the camera assembly 3 and above the detection position 7. It is used to emit detection light to the outer front side, inner front side, outer rear side, inner rear side, outer left side, inner left side, outer right side, and inner right side of the sole of the shoe at the detection position 7. The third light source 6-3 is UV light.

[0108] The light source assembly 6 is tilted downwards, and the emitted light is directed toward the detection position 7, illuminating the sole of the shoe to be detected.

[0109] In actual use, the installation height of camera assembly 3 relative to conveyor belt 4 is 30-40cm, the interval between the first industrial camera 3-1 and the third industrial camera 3-3 is 60cm, the interval between the second industrial camera 3-2 and the fourth industrial camera 3-4 is 60cm, and the tilt angle of camera assembly 3 is 45-60 degrees; the installation height of light source assembly 6 relative to conveyor belt 4 is 13-16cm, and the tilt angle of light source assembly 6 is 5-10 degrees; the first light source 6-1 has an exposure of 2000-10000, the second light source 6-2 has an exposure of 400-1500, and the third light source 6-3 has an exposure of 1200-10000.

[0110] In actual use, when conveyor belt 4 transports the shoe sole to be inspected (coated with adhesive containing fluorescent agent) to inspection station 7:

[0111] The first light source 6-1 is turned on, and the other light sources are turned off. The camera component 3 takes pictures of the sole to be inspected from all directions, and collects the images of the inner inspection surface on the right side of the sole, the inner inspection surface at the rear of the sole, the inner inspection surface on the left side of the sole, and the inner inspection surface at the front of the sole, so as to extract the glue line along the upper edge of the inner side of the sole and calculate the glue detection area on the inner side.

[0112] The second light source 6-2 on the left side of the sole is turned on, while other light sources are turned off. The camera component 3 takes a picture of the sole to be inspected from the upper left of the sole, and acquires an image of the outer inspection surface on the left side of the sole in order to extract the glue line on the outer left side of the sole and calculate the glue detection area on the outer left side.

[0113] The second light source 6-2 on the right side of the sole is turned on, while other light sources are turned off. The camera component 3 takes a picture of the sole to be inspected from the upper right side of the sole, and acquires an image of the outer inspection surface on the right side of the sole in order to extract the glue line on the outer right side of the sole and calculate the glue detection area on the outer right side.

[0114] The third light source 6-3 is turned on, and other light sources are turned off. The camera component 3 takes pictures of the sole to be tested from all directions, and tests the glue detection area on the inner side and the glue detection area on the outer side of the sole. If there is a dark area in the glue detection area on the inner side, there is a break in the glue or a lack of glue. If there is a bright area in the glue detection area on the outer side, there is an overflow of glue.

[0115] By using at least four industrial cameras in conjunction with light source assembly 6, including a white light source for extracting the glue line along the inner side, a blue light source for extracting the glue line along the outer side, and a UV light source for detecting glue breakage, missing glue, and overflow, images of each glue-coated surface of the sole can be accurately captured. This facilitates the extraction of the detection area and reduces the difficulty of identifying glue breakage, missing glue, and overflow, thereby greatly improving the detection accuracy of the sole glue quality detection equipment.

[0116] like Figure 1 As shown, in this embodiment, an industrial control computer 10 is also included, which includes a detection module and a central control module;

[0117] The detection module is connected to the camera assembly 3 and is used to extract the detection area from the image acquired by the camera assembly 3 and to detect missing glue or overflow glue in the extracted detection area.

[0118] The central control module is connected to the detection module to receive the detection result signals from the detection module and to process and respond to different detection result signals.

[0119] In this embodiment, the light source component 6 is connected to the camera component 3 through the central control module, and the camera component 3 controls the flicker of the light source component 6.

[0120] The camera assembly 3 controls the strobe of the light source assembly 6 to facilitate the cooperation of various industrial cameras and light sources to acquire inspection images of the shoe sole.

[0121] like Figure 1 , 2 As shown, in this embodiment, the camera assembly 3 further includes a fifth industrial camera 3-5 and a sixth industrial camera 3-6;

[0122] The fifth industrial camera 3-5 is positioned below the second industrial camera 3-2 and in front of the detection position 7. The fifth industrial camera 3-5 is used to photograph the front outer side of the shoe sole.

[0123] The sixth industrial camera 3-6 is located below the fourth industrial camera 3-4 and behind the detection position 7. The sixth industrial camera 3-6 is used to photograph the rear outer side of the shoe sole.

[0124] In this embodiment, the method by which the detection module extracts the detection region from the image acquired by the camera component 3 includes:

[0125] like Figure 6 As shown, the detection images of the inner and outer surfaces of the shoe sole are acquired, specifically including:

[0126] Camera assembly 3 controls the second light source 6-2 below the first industrial camera 3-1 to be lit, while other light sources are darkened, and the first industrial camera 3-1 acquires an image of the outer detection surface on the left side of the shoe sole.

[0127] Camera assembly 3 controls the second light source 6-2 below the third industrial camera 3-3 to be lit, while other light sources are darkened, and the third industrial camera 3-3 acquires an image of the outer inspection surface on the right side of the shoe sole.

[0128] Camera assembly 3 controls the second light source 6-2 below the second industrial camera 3-2 to be lit, while other light sources are darkened, and the fifth industrial camera 3-5 acquires an image of the outer inspection surface of the front end of the shoe sole.

[0129] Camera assembly 3 controls the second light source 6-2 below the fourth industrial camera 3-4 to be lit, while other light sources are darkened, and the sixth industrial camera 3-6 acquires an image of the outer inspection surface of the rear end of the shoe sole.

[0130] Camera assembly 3 controls the first light source 6-1 to be lit, while other light sources are dark. The first industrial camera 3-1, the second industrial camera 3-2, the third industrial camera 3-3, and the fourth industrial camera 3-4 respectively acquire images of the inner detection surface on the right side, the inner detection surface on the rear end, the inner detection surface on the left side, and the inner detection surface on the front end of the shoe sole.

[0131] The images of each detection surface captured by the camera component 3 are identified respectively. In the first image to be detected, the sole of the shoe has a first bright area and a second bright area located in the middle of the first light-blocking area; the sole of the shoe in the second image to be detected only has the second light-blocking area.

[0132] like Figure 7 As shown, the region of interest is extracted from the first image to be detected, and the region of interest is the bright area of ​​the sole of the shoe;

[0133] Extract the region of interest from the second image to be detected. The region of interest is the second occluded area of ​​the sole of the shoe.

[0134] Extract the upper edge of the glue line of the first bright area on the lower side, and use the area formed by shifting the upper edge of the glue line downwards a certain distance as the glue overflow detection area on the outer side of the sole.

[0135] Extract the upper edge of the glue line in the second light-blocking area, and use the area formed by shifting the upper edge of the glue line downwards a certain distance as the detection area for missing or broken glue on the inner side of the sole.

[0136] In this embodiment, the method for detecting missing or overflowing adhesive in the extracted detection area includes:

[0137] Methods for detecting missing or overflowing adhesive in the extracted detection area include:

[0138] like Figure 10 As shown, camera assembly 3 controls the third light source 6-3 to be lit while other light sources are dark. The first industrial camera 3-1, the second industrial camera 3-2, the third industrial camera 3-3, the fourth industrial camera 3-4, the fifth industrial camera 3-5, and the sixth industrial camera 3-6 respectively acquire the shoe sole images corresponding to the detection area.

[0139] The corresponding detection area in the shoe sole image is detected to detect the excess glue, missing glue, or broken glue within the detection area.

[0140] like Figure 8 , 9 As shown in 11 and 12, in this embodiment, the pixels with drastic pixel changes in the first bright area are first extracted to obtain the outer contour of the first bright area.

[0141] Extract pixels with drastic pixel changes in the second shading area to obtain the outer contour of the second shading area;

[0142] Based on the position coordinates of all points on the outer contour, obtain the position coordinate array;

[0143] Filter the position coordinate array to find the smallest column value and obtain its smallest index in the array. If the smallest index is greater than 0, rearrange the position coordinate array to obtain a new position array where the smallest index is the first point in the new array. If the smallest index is 0, rearrange the position coordinate array to obtain a new position array that is consistent with the original array. Determine the sorting rule for the new position array, which can be clockwise or counterclockwise. If the sorting rule is clockwise, the position array needs to be reversed when counterclockwise sorting occurs; if the sorting rule is counterclockwise, the position array also needs to be reversed when clockwise sorting occurs.

[0144] Calculate the minimum bounding rectangle of the outer contour of the first bright area, set the indentation dimension h1 in the long direction and the extension dimension w1 in the wide direction to obtain the transformed new rectangle;

[0145] Calculate the minimum bounding rectangle of the outer contour of the second shading area, set the longitudinal indentation dimension h1, and translate the minimum bounding rectangle by a distance d1 along its minor axis to obtain the transformed new rectangle.

[0146] like Figure 9 As shown, the new rectangle after transformation intersects with the outer contour of the first bright area at four designated points A, B, C, and D. In the coordinate axis, let AB and CD be the column directions and AD and BC be the row directions. Divide the four points into two groups according to their column values. The two points with larger column values, BC, are in the first group, and the two points with smaller column values, AD, are in the second group. In the first group, point B is the point with the smaller row value, and in the second group, point A is the point with the smaller row value. Obtain the position numbers of points A and B in the new position array.

[0147] Record all points in the first bright area from point A to point B to form a curved segment along the sole. Set a fixed distance and shift the curved segment downward by this fixed distance to generate a new equidistant parallel line segment. Connect the curved segment with the new equidistant parallel line segment to form a detection area, which is the glue detection area on the outer side of the sole.

[0148] like Figure 11 , 12 As shown, based on the intersection of the transformed new rectangle and the outer contour of the second shading area at two designated points A and B, the position numbers of points A and B in the new position array are determined according to the position coordinates of points A and B respectively.

[0149] Record all points in the second light-blocking area from point A to point B to form a curved segment along the sole. Set a fixed distance and shift the curved segment downward by this fixed distance to generate a new equidistant parallel line segment. Connect the curved segment with the new equidistant parallel line segment to form a detection area, which is the glue detection area on the inner side of the sole.

[0150] In practical applications, when the detection module receives the image captured by the camera under the illumination of the third light source 6-3, it can automatically detect glue overflow in the outer side of the sole and glue shortage or breakage in the inner side. When a bright area is detected in the outer side detection area, it is determined that the outer side of the sole is glue overflowing, or when a dark area is detected in the inner side detection area, it is determined that the inner side of the sole is glue shortage. At this time, the detection module will generate an NG signal and transmit the NG signal to the central control module.

[0151] like Figure 1 As shown, in this embodiment, a sensor 9 is also included. The sensor 9 is disposed in front of the detection position 7 and is connected to the central control module. The sensor 9 is used to sense whether the sole of the shoe to be detected has reached the detection position 7.

[0152] When the sensor 9 detects that the sole has reached the detection position 7, the central control module controls the camera component 3 to cooperate with the light source component 6 to collect images of the sole, and transmits the collected images to the detection module for detection of missing glue, broken glue, and overflow glue.

[0153] like Figure 1 As shown, in this embodiment, a pusher 2 is also included. The pusher 2 is installed on the frame 1 and connected to the central control module. The pusher 2 is used to push the unqualified shoe soles from the conveyor belt 4 to the designated position. The pusher 2 is a lead screw cylinder.

[0154] In practical applications, the pusher 2 can also be an electric push rod.

[0155] like Figure 1 As shown, in this embodiment, a storage box 8 is also included. The storage box 8 is installed on the opposite side of the pusher 2 and is correspondingly set with the pusher 2, and is used to receive the unqualified shoe soles pushed by the pusher 2.

[0156] In practical application, when the central control module receives an NG signal, it will control the pusher 2 to push the defective shoe sole into the storage box 8, which will facilitate subsequent repairs or operations by the workers.

[0157] like Figure 1As shown, in this embodiment, it also includes a button box 16, a display 12, and a warning light 13. The button box 16 is mounted on the frame 1 for quick operation and control of the equipment. The display 12 and the warning light 13 are mounted on the cover plate 11. The display 12 is connected to the industrial control computer 10 and is used to display the test results and operating status in real time. The warning light 13 is connected to the industrial control computer 10 and is used to indicate different test results and equipment operating status.

[0158] In practical applications, the detection results of the detection module of the industrial control computer 10 can be displayed on the display 12 in real time, making it convenient for staff to understand and confirm the detection results.

[0159] like Figure 1 , 2 As shown in Figure 5, in this embodiment, the invention is characterized by further including an electrical cabinet 17, a motor 5, a sealing plate 11 mounted on the frame 1, and a magnetic door 14. The motor 5 is mounted on the frame 1 and is connected to the conveyor belt 4 for transmission. The electrical cabinet 17 is used to integrate and manage and protect various electrical components. The electrical cabinet 17 is connected to the industrial control computer 10, the button box 16, the pusher 2, the light source assembly 6, the camera assembly 3, and the motor 5 respectively.

[0160] The sealing plate 11 and the magnetic door 14 are used to form a semi-enclosed space, which is located above the conveyor belt 4 and on the inner periphery of the light source assembly 6 and the camera assembly 3. The sealing plate 11 and the magnetic door 14 are made of opaque material, and the magnetic door 14 is provided with a door handle buckle 15.

[0161] The opaque material facilitates the cooperation between the camera component 3 and the light source component 6 in image acquisition within the semi-enclosed space.

[0162] Example 2

[0163] like Figure 3 , 4 As shown in Figure 13, the difference between this embodiment and embodiment 1 is that the camera assembly 3 in this embodiment further includes a first plane mirror 3-7 and a second plane mirror 3-8;

[0164] The first plane mirror 3-7 is positioned below the fourth industrial camera 3-4 and behind the detection position 7, with the mirror facing the detection position 7. It is used to combine with the second industrial camera 3-2 to photograph the rear outer side of the shoe sole.

[0165] The second industrial camera 3-2 can simultaneously capture detection images of the inner rear side 18 and the outer rear side 19 of the shoe sole through the first plane mirror 3-7.

[0166] The second plane mirror 3-8 is positioned below the second industrial camera 3-2 and in front of the detection position 7, with the mirror facing the detection position 7. It is used to combine with the fourth industrial camera 3-4 to photograph the front outer side of the shoe sole.

[0167] The above description is merely a preferred embodiment of the present invention and does not limit the scope of patent protection of the present invention. Any equivalent structural transformations made based on the description and drawings of the present invention, whether directly or indirectly applied to other related technical fields, are similarly included within the scope of protection of the present invention.

Claims

1. A shoe sole adhesive quality testing device, characterized in that, include: The frame, conveyor belt, camera assembly, and light source assembly; The conveyor belt is mounted on the frame and is made of a light-transmitting material. The conveyor belt is used to transport shoe soles, which are coated with adhesive containing fluorescent agents. There is a detection position above the conveyor belt. The camera assembly includes multiple industrial cameras, including at least a first industrial camera, a second industrial camera, a third industrial camera, a fourth industrial camera, a fifth industrial camera, and a sixth industrial camera. Each industrial camera is arranged at intervals around the detection position above it, and the lens of the camera assembly is aimed at the detection position below it. The first industrial camera is used to photograph the left outer side and the right inner side of the shoe sole; The second industrial camera is used to photograph the rear inner side of the shoe sole; The third industrial camera is used to photograph the right outer side and the left inner side of the shoe sole; The fourth industrial camera is used to photograph the front inner side of the shoe sole; The light source assembly includes: a first light source, a second light source, and a third light source; The first light source is located inside the conveyor belt and below the detection position, and is used to emit a backlight to the sole of the shoe at the detection position. The backlight is white light. The second light source is positioned below the camera assembly and above the detection position, and is used to emit illumination light at least to the left outer side and right outer side of the sole of the shoe at the detection position. The second light source is blue light. The third light source is located below the camera assembly and above the detection position, and is used to emit detection light to the outer front side, inner front side, outer rear side, inner rear side, outer left side, inner left side, outer right side, and inner right side of the sole of the shoe at the detection position. The third light source is UV light. The second and third light sources are tilted downwards, and the emitted light is directed toward the detection position, illuminating the sole of the shoe to be detected; It also includes an industrial control computer, which includes a detection module and a central control module; The detection module is connected to the camera assembly and is used to extract the detection area from the image acquired by the camera assembly and to detect missing or overflowing glue in the extracted detection area. The central control module is connected to the detection module and is used to receive the detection result signal from the detection module and process and respond to different detection result signals. The method by which the detection module extracts the detection region from the image acquired by the camera component includes: Acquire detection images of the inner and outer surfaces of the shoe sole, specifically including: The camera assembly controls the second light source below the first industrial camera to be lit while other light sources are dimmed, and the first industrial camera captures an image of the outer detection surface on the left side of the shoe sole. The camera assembly controls the second light source below the third industrial camera to be lit while other light sources are dimmed, and the third industrial camera captures an image of the outer inspection surface on the right side of the shoe sole. The camera assembly controls the second light source below the second industrial camera to be lit while other light sources are dimmed, and the fifth industrial camera captures an image of the outer inspection surface at the front end of the shoe sole. The camera assembly controls the second light source below the fourth industrial camera to be lit while other light sources are dimmed, and the sixth industrial camera captures an image of the outer inspection surface at the rear end of the shoe sole. The camera assembly controls the first light source to be bright while other light sources are dark. The first industrial camera, the second industrial camera, the third industrial camera, and the fourth industrial camera respectively acquire images of the inner detection surface on the right side, the inner detection surface on the rear end, the inner detection surface on the left side, and the inner detection surface on the front end of the shoe sole. The images of each detection surface acquired by the camera component are identified respectively, wherein the sole of the shoe in the first image to be detected has a first bright area, a second bright area, and a first light-blocking area located in the middle; the sole of the shoe in the second image to be detected only has a second light-blocking area; Extract the region of interest from the first image to be detected, wherein the region of interest is the bright area of ​​the sole of the shoe; Extract the region of interest from the second image to be detected, wherein the region of interest is the second light-blocking area of ​​the sole of the shoe; Extract the upper edge of the glue line of the first bright area on the lower side, and use the area formed by shifting the upper edge of the glue line downwards a certain distance as the glue overflow detection area on the outer side of the sole. Extract the upper edge of the glue line in the second light-blocking area, and use the area formed by shifting the upper edge of the glue line downwards a certain distance as the detection area for missing or broken glue on the inner side of the sole.

2. The shoe sole adhesive quality testing equipment as described in claim 1, characterized in that, The light source component is connected to the camera component through the central control module, and the camera component controls the flicker of the light source component.

3. The shoe sole adhesive quality testing equipment as described in claim 2, characterized in that, The fifth industrial camera is positioned below the second industrial camera and in front of the detection position, and is used to photograph the front outer side of the shoe sole. The sixth industrial camera is positioned below the fourth industrial camera and behind the detection position, and is used to photograph the rear outer side of the shoe sole.

4. The shoe sole adhesive quality testing equipment as described in claim 3, characterized in that, The camera assembly also includes a first plane mirror and a second plane mirror; The first plane mirror is positioned below the fourth industrial camera and behind the detection position, with the mirror surface aligned with the detection position, for use in conjunction with the second industrial camera to photograph the rear outer side of the shoe sole. The second plane mirror is positioned below the second industrial camera and in front of the detection position, with the mirror facing the detection position, for use in conjunction with the fourth industrial camera to photograph the front outer side of the shoe sole.

5. The shoe sole adhesive quality testing equipment as described in claim 1, characterized in that, Methods for detecting missing or overflowing adhesive in the extracted detection area include: The camera assembly controls the third light source to be bright and the other light sources to be dark. The first industrial camera, the second industrial camera, the third industrial camera, the fourth industrial camera, the fifth industrial camera and the sixth industrial camera respectively acquire the shoe sole image corresponding to the detection area. The detection area corresponding to the sole image is detected to detect the excess glue, missing glue, or broken glue within the detection area.

6. The shoe sole adhesive quality testing equipment as described in claim 1, characterized in that, It also includes a pusher, a storage box, and a sensor. The pusher is mounted on the frame and connected to the central control module. The pusher is used to push the unqualified shoe soles from the conveyor belt to a designated position. The pusher is a lead screw cylinder. The sensor is positioned in front of the detection position and is connected to the central control module. The sensor is used to sense whether the sole of the shoe to be detected has reached the detection position. The storage box is installed on the opposite side of the pusher and is set in a corresponding manner to receive the defective shoe soles pushed by the pusher.

7. The shoe sole adhesive quality testing equipment as described in claim 6, characterized in that, It also includes a button box, a display, a warning light, and a cover plate mounted on the rack. The button box is mounted on the rack for quick operation and control of the equipment. The display and the warning light are mounted on the cover plate. The display is connected to the industrial computer and is used to display the test results and operating status in real time. The warning light is connected to the industrial computer and is used to indicate different test results and equipment operating status.

8. The shoe sole adhesive quality testing equipment as described in claim 7, characterized in that, It also includes an electrical cabinet, a motor, and a magnetic door mounted on a frame. The motor is mounted on the frame and is connected to the conveyor belt. The electrical cabinet is used to integrate and manage and protect various electrical components. The electrical cabinet is connected to the industrial computer, the button box, the pusher, the light source assembly, the camera assembly, and the motor. The sealing plate and the magnetic door form a semi-enclosed space located above the conveyor belt and on the inner periphery of the light source assembly and the camera assembly. The sealing plate and the magnetic door are made of opaque material, and the magnetic door is equipped with a door handle.

Images