Detection equipment and method for optically detecting plant fiber utensils

Abstract

The invention relates to detection equipment and method for optically detecting plant fiber utensils, and the detection equipment comprises a transmission carrier, a first light source, a first shooting device and a second shooting device which are arranged on a conveying device, and the transmission carrier on the conveying device is used for conveying a plurality of plant fiber utensils; a transfer carrier on the conveying device is at least provided with a transparent area, the first light source is located on one side of the transfer carrier, the first shooting device is located on the other side of the transfer carrier, and when the detection equipment operates, the first light source irradiates a plant fiber utensil to be in a semitransparent state. The first shooting device is used for shooting an image of the plant fiber utensil in a semitransparent state, and the second shooting device penetrates through the transparent area of the transfer carrier to shoot an image of the inner surface of the plant fiber utensil. The internal defects of the plant fiber utensils can be detected, and the device is suitable for detecting the plant fiber utensils in all shapes.

Description

Technical Field

[0001] The present invention relates to the technical field of optical detection equipment, and in particular to a detection equipment and method for optically detecting plant fiber objects. Background Art

[0002] Generally, optical inspection equipment uses a camera to capture images of products, and then compares the captured images with standard images of qualified products. After image processing, defects in the products are detected.

[0003] See also Fig.12 As shown, the optical inspection equipment used for inspecting plant fiber objects by current technology, specifically taking the inspection of plant fiber cup cover 1 as an example, is suitable for inspecting the outer surface defects and inner surface defects of the plant fiber cup cover 1, including a first conveyor belt 91 and a second conveyor belt 92 arranged in sequence along the conveying direction, the first conveyor belt 91 and the second conveyor belt 92 are respectively annular, the discharge end 911 of the first conveyor belt 91 extends to the bottom of the second conveyor belt 92, a plurality of circumferentially distributed adsorption holes are provided on the bottom side of the second conveyor belt 92, a suction device 921 is provided in the second conveyor belt 92, the suction device 921 is suitable for forming a vacuum in the adsorption holes on the bottom side of the second conveyor belt 92, and a first conveyor belt 91 is provided above the first conveyor belt 91. A photographing device 931, wherein the first photographing device 931 is suitable for photographing the outer surface image of the plant fiber cup cover 1 on the first conveyor belt 91, and a second photographing device 932 is arranged below the aforementioned second conveyor belt 92, and the second photographing device 932 is suitable for photographing the inner surface image of the plant fiber cup cover 1 on the second conveyor belt 92; when working, the opening of the plant fiber cup cover 1 is arranged downward, and the plant fiber cup cover 1 is first conveyed by the first conveyor belt 91. When the plant fiber cup cover 1 is conveyed to its discharge end 911 by the first conveyor belt 91, the aforementioned second conveyor belt 92 adsorbs the aforementioned plant fiber cup cover 1 through the adsorption holes on its bottom side, and the adsorbed plant fiber cup cover 1 is then continued to be conveyed by the second conveyor belt 92.

[0004] The optical detection equipment used to detect plant fiber objects in the prior art has the following defects: 1. Existing optical inspection equipment for inspecting plant fiber objects can only inspect the outer surface defects (external surface defects include outer surface dirt, unclear outer surface pattern, outer surface damage, missing of part of the outer surface product structure, etc.) and inner surface defects (internal surface defects include inner surface dirt, unclear outer surface pattern, inner surface damage, missing of part of the inner surface product structure, etc.) of plant fiber objects, but cannot inspect the internal defects of the plant fiber objects (internal defects include internal cracks, uneven thickness, internal pores, overall too thin or too thick, etc.); 2. In order to capture the inner surface image of the plant fiber implement, the optical detection device currently used to detect the plant fiber implement absorbs the top of the plant fiber implement through the absorption hole on the bottom side of the second conveyor belt 92, so that the inner surface of the plant fiber implement is presented to the second shooting device 932. However, in actual use, not all shapes of plant fiber implements can be absorbed, for example: See also Fig.13 As shown, the plant fiber utensil is a plant fiber cup cover 94, including a cover plate 941, the outer edge of the cover plate 941 is a ring-shaped cover edge 942 extending downward, and a C-shaped protrusion 943 is formed on the cover plate 941, and the longitudinal height of the protrusion 943 is higher than the top plane of the aforementioned cover plate 941, so that the plant fiber cup cover 94 cannot be smoothly adsorbed on the aforementioned second conveyor belt 92 due to the structure of the aforementioned protrusion 943; See also Fig.14 As shown, the plant fiber utensil is another plant fiber cup cover, specifically a flip-top cup cover 95, a top of which is formed with a recessed portion 951 with a notch facing upward, a surface of the recessed portion 951 is provided with a cover hole 952, one side of the cover hole 952 is connected to a flip-top cover 953 that can be folded, the shape of the cover hole 952 matches the shape of the flip-top cover 953, a protrusion 954 is formed on the flip-top cover 953, the longitudinal height of the protrusion 954 is higher than the top plane of the aforementioned flip-top cover 953, a plurality of tear strips 955 arranged at intervals are provided between the flip-top cover 953 and the cover hole 952, because the aforementioned protrusion 954 is higher than the top surface of the plant fiber cup cover, if the flip-top cup cover 95 is forcibly adsorbed on the aforementioned second conveyor belt 92, the flip-top cover 953 will be pushed due to the structure of the aforementioned protrusion 954, causing the aforementioned tear strip 955 to break, and the flip-top cover 953 will be folded downward; See also Fig.15 As shown, the plant fiber utensil is a sundae cup 96, which includes a cover plate 961. The outer edge of the cover plate 961 is provided with a ring-shaped cup edge 962. The cover plate 961 is formed with a recessed portion 963 with a notch facing upward. Since the top area of ​​the sundae cup 96 is relatively small, the negative pressure formed in the recessed portion 963 is not enough to allow the sundae cup 96 to be adsorbed on the second conveyor belt 92, and the sundae cup 96 can easily fall off the second conveyor belt 92. Summary of the invention

[0005] The technical problem to be solved by the present invention is to provide a detection device for optically detecting plant fiber objects, which can detect internal defects of plant fiber objects and is suitable for detecting plant fiber objects of all shapes.

[0006] Another technical problem to be solved by the present invention is to provide a method for optically detecting plant fiber objects, which can detect inner surface defects and internal defects of plant fiber objects and is suitable for detecting plant fiber objects of all shapes.

[0007] To achieve the above object, the present invention: A detection device for optically detecting plant fiber objects comprises a conveying device for conveying a plurality of plant fiber objects, at least one light source, and at least one photographing device. The conveying device comprises a transfer carrier having at least one transparent area, the at least one photographing device comprises a first photographing device, and the at least one light source comprises a first light source. When the detection device is in operation, the first light source on one side of the transfer carrier directly illuminates the plant fiber objects to present a translucent state, and then the first photographing device on the other side of the transfer carrier is used to penetrate the transparent area of ​​the transfer carrier to photograph the image of the plant fiber objects in the translucent state, or the first light source on one side of the transfer carrier penetrates the transparent area of ​​the transfer carrier to illuminate the plant fiber objects to present a translucent state, and then the first photographing device on the other side of the transfer carrier is used to directly photograph the image of the plant fiber objects in the translucent state.

[0008] After adopting the above technical solution, the plant fiber implement is illuminated by the first light source to be in a translucent state, and then the first shooting device is used to shoot an image of the plant fiber implement in a translucent state. According to the changes in the brightness of light and shadow on the image, the internal defects of the plant fiber implement can be checked (internal defects include internal cracks, uneven thickness, internal pores, overall too thin or too thick, etc.). By using the transparent area provided by the transfer carrier, during the detection process, the present invention does not need to adsorb the top of the plant fiber implement to detect the internal surface defects of the plant fiber implement, so the present invention is suitable for detecting plant fiber implements of all shapes.

[0009] Furthermore, the transfer carrier includes an inclined slide, and the inclined slide is used to allow multiple plant fiber objects to slide freely in sequence.

[0010] Furthermore, the transfer carrier on the aforementioned conveying device includes a first conveyor belt that loops in an annular shape and the aforementioned inclined slide, the first conveyor belt is located on the loading side or the discharging side of the inclined slide, and the first conveyor belt and the inclined slide respectively have the aforementioned transparent area, the aforementioned first light source is arranged on the inner side of the first conveyor belt that is not used for placing plant fiber objects, and the aforementioned first photographing device is arranged on the outer side of the first conveyor belt that is used for placing plant fiber objects, and is simultaneously located directly above the first light source, and the aforementioned at least one photographing device further includes a second photographing device, and the second photographing device is arranged below the aforementioned inclined slide that is not used for placing plant fiber objects.

[0011] Furthermore, a plurality of adsorption holes which are spaced apart and distributed circumferentially are provided on the top side of the aforementioned first conveyor belt, and a shading plate located above the aforementioned first light source is provided in the aforementioned first conveyor belt, and a light-transmitting hole is provided on the shading plate, and the light of the first light source is limited to the outer contour of the plant fiber object by means of the light-transmitting hole, and a suction device is provided in the aforementioned first conveyor belt, and the aforementioned suction device includes at least one shell, and the aforementioned suction device includes multiple shells, and the multiple shells are respectively arranged on both sides of the aforementioned first light source, and at least one air suction hole is provided on the shell, and the air suction hole is used to connect an air suction device, and at least one air suction hole which is in the shape of a long strip and extends along the conveying direction of the aforementioned plant fiber object is provided on the top of the aforementioned shell, and the air suction hole is located below the adsorption hole on the top side of the aforementioned first conveyor belt; the aforementioned inclined slide is arranged on a frame; the aforementioned second shooting device includes a third camera arranged below the aforementioned frame.

[0012] Furthermore, an air blowing device is provided on the outer side of the top of the aforementioned inclined slide, and the air blowing device includes a hollow cavity, on which at least one air inlet is provided, and the air inlet is used to connect to an air supply device, and a plurality of air blowing holes arranged at intervals are provided on the bottom end surface of the hollow cavity opposite to the aforementioned inclined slide, and the air blowing holes are used to blow air to the top of the aforementioned plant fiber object, so that the plant fiber object can slide freely on the aforementioned inclined slide tightly without flying away from the inclined slide.

[0013] Furthermore, a guide structure is provided on the outer side of the aforementioned inclined slide, and the guide structure includes two first guide plates arranged at intervals, and the first guide plate is arranged on the bottom end surface of the aforementioned hollow cavity, and the blowing hole provided by the aforementioned blowing device is located between the two first guide plates, and at least one first upper guide plate is provided on the opposite surfaces between the two opposite first guide plates, and the aforementioned inclined slide, the aforementioned hollow cavity, the two first guide plates, and the two first upper guide plates are jointly framed to form a first guide channel, and the outer side surface of the aforementioned inclined slide located near the bottom is positioned on the outer side of the inclined slide by a mounting plate, and the two second guide plates and the two second upper guide plates are located between the two second guide plates, and an inclined guide plate extends from the top of the second guide plate, and the mounting plate is combined with the aforementioned frame, and the top of the aforementioned second upper guide plate extends to the top of the aforementioned first upper guide plate, and the aforementioned inclined slide, the two second guide plates, and the two second upper guide plates are jointly framed to form a second guide channel, and the plant fiber objects on the aforementioned inclined slide pass through the aforementioned first guide channel and the second guide channel in sequence.

[0014] Furthermore, the first photographing device includes a first camera for photographing the top surface image of the plant fiber object, a fixed plate and a lifting plate, the fixed plate is connected to the lifting plate by a set of adjustment mechanisms, the adjustment mechanism includes a plurality of bearing seats, the bearing seats are arranged on the fixed plate, a vertical shaft is movably pivotally fixed in each bearing seat, the bottom of the vertical shaft is fixed on the lifting plate, and each vertical shaft is connected to each other by a synchronous belt to achieve synchronous adjustment, a knob is provided at the top of one of the vertical shafts in the adjustment mechanism, and the knob of the adjustment mechanism is turned to adjust The position height of the lifting plate is provided with a through hole in the center of the plate body, and the first camera is arranged above the through hole by at least one fixed bracket on the lifting plate, and a plurality of second cameras are arranged on the lifting plate, and the second camera is used to shoot the external side image of the plant fiber object. The position height of the lifting plate is adjusted by rotating the knob of the adjustment mechanism, and the position height of each second camera and the first camera can be adjusted synchronously, and the first camera and the second camera of the first shooting device can completely shoot the image of the plant fiber object in a translucent state.

[0015] A method for optically inspecting plant fiber objects comprises a conveying device for conveying a plurality of plant fiber objects, at least one light source, and a plurality of photographing devices, wherein the conveying device comprises a transfer carrier having at least one transparent area, the plurality of photographing devices comprises a first photographing device and a second photographing device, and the at least one light source comprises a first light source, the first light source is used to penetrate through the transparent area provided on the transfer carrier on the conveying device to illuminate a plant fiber object in a semi-transparent state, and the first photographing device is then used to directly photograph an image of the plant fiber object in a semi-transparent state, so as to determine whether the internal fiber structure of the plant fiber object has defects, and the second photographing device is used to penetrate through the transparent area provided on the transfer carrier on the conveying device to photograph an image of the inner surface of the plant fiber object.

[0016] After adopting the above technical scheme, the plant fiber object is illuminated by the first light source to be in a translucent state, and then the first shooting device is used to shoot the image of the plant fiber object in a translucent state. According to the changes in the brightness of light and shadow on the image, the internal defects of the plant fiber object (internal defects include internal cracks, uneven thickness, internal pores, overall too thin or too thick, etc.) can be detected; and the second shooting device penetrates the transparent area of ​​the aforementioned transfer carrier to shoot the inner surface image of the plant fiber object, which can detect the inner surface defects of the plant fiber object (inner surface defects include inner surface dirt, unclear outer surface pattern, inner surface damage, missing of part of the product structure on the inner surface, etc.) and the hoop diameter size; by using the transparent area provided by the transfer carrier, the present invention does not need to adsorb the top of the plant fiber object during detection, and can detect the inner surface defects of the plant fiber object, so the present invention is suitable for detecting plant fiber objects of all shapes. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 FIG1 is an embodiment of a detection device for optically detecting plant fiber objects according to the present invention; Figure 2 FIG2 is an embodiment of the detection device for optically detecting plant fiber objects of the present invention; Figure 3 FIG3 is an embodiment of the detection device for optically detecting plant fiber objects of the present invention; Figure 4 FIG4 is an embodiment of the detection device for optically detecting plant fiber objects of the present invention; Figure 5 FIG5 is an embodiment of the detection device for optically detecting plant fiber objects of the present invention; Figure 6 for Figure 4 Stereoscopic image of Figure 7 for Figure 6 A perspective view with the first conveyor belt removed; Figure 8 is a three-dimensional diagram of an inclined slide; Fig. 9 Another perspective view of the inclined slide; Fig.10 is a stereoscopic image of a first photographing device; Fig.11 FIG6 is an embodiment of the detection device for optically detecting plant fiber objects of the present invention; Fig.12 A schematic diagram of an optical detection device in the prior art; Fig.13 It is a three-dimensional picture of a plant fiber cup cover; Fig.14 A three-dimensional image of another plant fiber cup lid; Fig.15 This is a three-dimensional image of another plant fiber object.

[0018] Description of Figure Numbers: The present invention includes: 1 a plant fiber cup cover; 20 a transfer carrier; 2 a first conveyor belt; 21 an adsorption hole; 22 a shading plate; 221 a light-transmitting hole; 23 a shell; 231 an air intake hole; 25 a first light source; 3 an inclined slide; 31 a frame; 32 a supporting tripod; 33 a first annular light source; 4 an air blowing device; 41 a hollow cavity; 42 an air inlet; 43 an air blowing hole; 5 a guide structure; 51 a first guide plate; 511 a first upper guide plate; 53 a first guide channel; 54 a mounting plate; 55 a second guide plate; 551 an inclined guide plate; 57 a second upper guide plate; 59 a second guide channel; 6 a first shooting device; 61 a first camera; 62 a fixing plate; 63 a lifting plate; 630 a through hole; 631 a fixing bracket; 64 an adjusting mechanism; 641 a bearing seat; 642 a vertical axis; 643 a synchronous belt; 644 a knob; 65 a second camera; 7 a second shooting device; 71 a third camera; 8 a second conveyor belt; 81 a third shooting device.

[0019] Existing technology: 1 plant fiber cup cover; 91 first conveyor belt; 911 discharge end; 92 second conveyor belt; 921 suction device; 931 first shooting device; 932 second shooting device; 94 plant fiber cup cover; 941 cover plate; 942 annular cover edge; 943 protrusion; 95 flip-top cup cover; 951 recessed portion; 952 cover hole; 953 flip cover; 954 protrusion; 955 tearing belt; 96 sundae cup; 961 cover plate; 962 cup edge; 963 recessed portion. DETAILED DESCRIPTION

[0020] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0021] Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in the field without making any creative work shall fall within the scope of protection of the present invention.

[0022] It should be noted that all directional indications in the embodiments of the present invention (such as up, down, left, right, front, back, etc.) are only used to explain the relative position relationship, movement status, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0023] In the present invention, unless otherwise clearly specified and limited, the terms "connection", "fixation", etc. should be understood in a broad sense. For example, "fixation" can be a fixed connection, a detachable connection, or an integral connection; "connection" can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, and it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0024] See also Figure 1 As shown, the present invention is a detection device and method for optically detecting plant fiber objects. In the following embodiments, the plant fiber object is a plant fiber cup cover 1 as an example. The detection device includes a conveying device for conveying a plurality of plant fiber cup covers 1, at least one light source, and at least one shooting device. Since the conveying device is a device that is well known and used by the public, it will not be described in detail. The conveying device includes a transfer carrier 20, and the transfer carrier 20 on the conveying device has at least one transparent area. The at least one shooting device includes a first shooting device 6, and the at least one light source includes a first light source 25. The first light source 25 is located on one side of the transfer carrier 20, and the first shooting device 6 is located on the other side of the transfer carrier 20, that is, the first light source 25 and the first shooting device 6 are in a state where the transfer carrier 20 is spaced apart from each other. When the detection equipment is in operation, the detection method uses the first light source 25 to illuminate the plant fiber cup cover 1 in a translucent state, and then uses the first shooting device 6 to shoot the image of the plant fiber cup cover 1 in a translucent state, so as to determine whether the internal fiber structure of the plant fiber cup cover 1 has defects. The at least one shooting device further includes a second shooting device 7, and the second shooting device 7 penetrates the transparent area of ​​the aforementioned transfer carrier 20 to shoot the inner surface image of the plant fiber cup cover 1. In addition to detecting the inner surface defects of the plant fiber cup cover 1, the present invention can also detect the internal defects of the plant fiber cup cover 1, and is suitable for detecting plant fiber cup covers 1 of all shapes.

[0025] The transfer carrier 20 in this article can be a single carrier or a carrier with different sections and different objects connected. The transferred objects are located on the transfer carrier 20 and are transferred to the next work area. The transfer carrier 20 can be transmitted by a power device or move freely by sliding.

[0026] See also Figure 1The embodiment 1 shown in the figure is a detection device for optically detecting plant fiber objects, comprising a transfer carrier 20 provided on a conveying device, a first light source 25, a first shooting device 6 and a second shooting device 7. The transfer carrier 20 can be an inclined slide 3, which can allow multiple plant fiber cup covers 1 to slide freely in sequence. It has a simple structure and does not require a power device. The transfer carrier 20 on the conveying device has at least one transparent area. The first light source 25 is arranged above the side of the transfer carrier 20 for placing the plant fiber cup cover 1, and the first shooting device 6 is arranged below the side of the transfer carrier 20 that is not used for placing the plant fiber cup cover 1 and is located in the opposite direction of the first light source 25. The second shooting device 7 is arranged below the side of the transfer carrier 20 that is not used for placing the plant fiber cup cover 1.

[0027] The inclined slide 3 is an inclined plate, which is an entirely transparent plate and can be made of a transparent material, such as transparent glass. The inclined slide 3 can also be a partially transparent plate, and the partial transparency can be formed by providing a transparent area on the inclined slide 3.

[0028] When the detection equipment is in operation, the plant fiber cup covers 1 will be transported sequentially to the position directly below the first light source 25, and will be illuminated by the first light source 25 to make the plant fiber cup covers 1 appear translucent. By placing the plant fiber cup covers 1 in the transparent area of ​​the transfer carrier 20, the first camera 6 can penetrate the transparent area of ​​the transfer carrier 20 and successfully capture the image of the plant fiber cup covers 1 in the translucent state. The second camera 7 can capture the image of the inner surface of the plant fiber cup covers 1 through the transparent area of ​​the transfer carrier 20.

[0029] See also Figure 2 In the embodiment 2 shown, the first camera 6 is arranged above the side of the transfer carrier 20 for placing the plant fiber cup cover 1, and the first light source 25 is arranged below the side of the transfer carrier 20 not for placing the plant fiber cup cover 1; when the detection equipment is in operation, the first light source 25 penetrates the transparent area of ​​the transfer carrier 20, and the plant fiber cup cover 1 placed above the transparent area of ​​the transfer carrier 20 is illuminated by the first light source 25 to present a translucent state, the first camera 6 captures the image of the plant fiber cup cover 1 in a translucent state, and the second camera 7 captures the inner surface image of the plant fiber cup cover 1 through the transparent area of ​​the transfer carrier 20.

[0030] See also Figure 3In the illustrated embodiment 3, the transfer carrier 20 on the aforementioned conveying device may be a first conveyor belt 2 that loops in an annular shape and has a transparent area, the aforementioned first light source 25 is disposed on the inner side of the first conveyor belt 2 that is not used for placing the plant fiber cup cover 1, and the aforementioned first photographing device 6 is disposed on the outer side of the first conveyor belt 2 that is used for placing the plant fiber cup cover 1 and is simultaneously located directly above the first light source 25, and the aforementioned second photographing device 7 is also disposed on the inner side of the aforementioned first conveyor belt 2 that is not used for placing the plant fiber cup cover 1.

[0031] The first conveyor belt 2 is made of a transparent material, such as transparent PU or transparent silicone rubber, and is an overall transparent structure. Of course, the first conveyor belt 2 may also be a partially transparent structure, and the partial transparency may be formed by providing a transparent area on the first conveyor belt 2.

[0032] See also Figure 4 In the shown embodiment 4, the transfer carrier 20 on the aforementioned conveying device can be composed of the aforementioned first conveyor belt 2 and the aforementioned inclined slide 3, the first conveyor belt 2 is located on the feeding side of the inclined slide 3, and the first conveyor belt 2 and the inclined slide 3 respectively have transparent areas, the aforementioned first light source 25 is arranged on the inner side of the first conveyor belt 2 which is not used for placing the plant fiber cup cover 1, and the aforementioned first shooting device 6 is arranged on the outer side of the first conveyor belt 2 which is used for placing the plant fiber cup cover 1, and is also located directly above the first light source 25, and the aforementioned second shooting device 7 is arranged below the side of the aforementioned inclined slide 3 which is not used for placing the plant fiber cup cover 1.

[0033] When the detection equipment is in operation, the multiple plant fiber cup covers 1 are sequentially conveyed by the first conveyor belt 2. When one of the plant fiber cup covers 1 on the first conveyor belt 2 moves to directly above the first light source 25, the first light source 25 penetrates the transparent area of ​​the first conveyor belt 2 to illuminate the plant fiber cup cover 1 and present a translucent state. The first camera 6 captures the image of the plant fiber cup cover 1 in a translucent state, and the plant fiber cup cover 1 that is continuously moved and output by the first conveyor belt 2 moves onto the inclined slide 3. The second camera 7 captures the inner surface image of the plant fiber cup cover 1 through the transparent area of ​​the inclined slide 3.

[0034] See also Figure 5 In the fifth embodiment shown, the first conveyor belt 2 of the transfer carrier 20 on the conveying device may also be disposed on the discharge side of the inclined slide 3 .

[0035] by Figure 4 As a basis, design Figure 6 and Figure 7Detailed description of Example 4, the transfer carrier 20 on the aforementioned conveying device can be composed of the aforementioned first conveyor belt 2 and the aforementioned inclined slide 3, the first conveyor belt 2 is located on the feeding side of the inclined slide 3, and the first conveyor belt 2 and the inclined slide 3 respectively have transparent areas, the aforementioned first light source 25 is arranged on the inner side of the first conveyor belt 2 which is not used for placing the plant fiber cup cover 1, and the aforementioned first shooting device 6 is arranged on the outer side of the first conveyor belt 2 for placing the plant fiber cup cover 1, and is also located directly above the first light source 25, and the aforementioned second shooting device 7 is arranged below the side of the aforementioned inclined slide 3 which is not used for placing the plant fiber cup cover 1.

[0036] See also Figures 6 to 10 In the embodiment 4 shown, a plurality of adsorption holes 21 which are spaced apart and distributed circumferentially are provided on the top side of the first conveyor belt 2, and a shading plate 22 which is located above the first light source 25 is provided inside the first conveyor belt 2, and a light-transmitting hole 221 is provided on the shading plate 22, and the irradiation light of the first light source 25 first penetrates through the light-transmitting hole 221, and then penetrates through the transparent area on the first conveyor belt 2 to be irradiated only on the plant fiber cup cover 1, that is, the irradiation light is limited to the outer contour range of the plant fiber cup cover 1 by means of the light-transmitting hole 221, so that the irradiation light of the first light source 25 will not interfere with the shooting result of the first shooting device 6, and a suction device is provided inside the first conveyor belt 2, and the suction device includes at least A shell 23, in this embodiment, includes two shells 23, which are respectively arranged on both sides of the aforementioned first light source 25, and at least one exhaust hole (not shown) is opened on the shell 23, and the exhaust hole is used to connect an exhaust device, such as a vacuum pump or an exhaust fan, etc., and at least one suction hole 231 in the shape of a long strip and extending along the conveying direction of the aforementioned plant fiber cup cover 1 is opened on the top of the aforementioned shell 23. The suction hole 231 is a waist-shaped hole, and the suction hole 231 is located below the adsorption hole 21 on the top side of the aforementioned first conveyor belt 2. Through the operation of the aforementioned suction device, the adsorption hole 21 on the top side of the first conveyor belt 2 adsorbs the aforementioned plant fiber cup cover 1 to form a vacuum state, which can prevent the aforementioned plant fiber cup cover 1 from deflecting or moving during the conveying process.

[0037] The inclined slide 3 is arranged on a frame 31, and a plurality of supporting legs 32 are respectively arranged on both sides of the frame 31, and a first annular light source 33 is arranged under the frame 31. A blowing device 4 is arranged on the outer side of the top of the inclined slide 3. When the plant fiber cup cover 1 wants to enter the inclined slide 3, the blowing device 4 can make the plant fiber cup cover 1 close to the inclined slide 3 and slide freely without flying away from the inclined slide 3. A guiding structure 5 is arranged on the outer side of the inclined slide 3, and the guiding structure 5 is used to guide the free sliding movement of the plant fiber cup cover 1. Since the plant fiber cup cover 1 transported by the first conveyor belt 2 will generate a large inertia, it is easy to fly away from the inclined slide 3 when entering the inclined slide 3. The blowing device 4 can prevent the plant fiber cup cover 1 from flying away from the inclined slide 3 due to inertia, and at the same time, under the action of the guiding structure 5, the trajectory of the plant fiber cup cover 1 sliding down the inclined slide 3 will not deviate.

[0038] See also Figure 8 and Fig. 9 As shown, the aforementioned blowing device 4 includes a hollow cavity 41, and the hollow cavity 41 is provided with at least one air inlet 42. The air inlet 42 can be used to connect an air supply device, such as a blower or an air compressor, and the bottom end surface of the hollow cavity 41 opposite to the aforementioned inclined slide 3 is provided with a plurality of blowing holes 43 arranged at intervals. The blowing holes 43 can blow air to the top of the aforementioned plant fiber cup cover 1, so that the plant fiber cup cover 1 can be tightly attached to the aforementioned inclined slide 3 and slide freely.

[0039] The guide structure 5 includes two first guide plates 51 that are spaced apart from each other. The first guide plates 51 are arranged on the bottom end surface of the hollow cavity 41, and the blowing hole 43 provided on the blowing device 4 is located between the two first guide plates 51. The opposing surfaces between the two opposing first guide plates 51 are each provided with at least one first upper guide plate 511. In the present embodiment, each first guide plate 51 includes a first upper guide plate 511. The inclined slide 3, the hollow cavity 41, the two first guide plates 51, and the two first upper guide plates 511 are collectively framed to form a first guide channel 53. The outer side surface of the inclined slide 3 located near the bottom is connected to the two second guide plates 55, The two second upper guide plates 57 are positioned on the outside of the inclined slide 3, and the two second upper guide plates 57 are located between the two second guide plates 55. An inclined guide plate 551 is extended from the top of each of the two second guide plates 55, and the mounting plate 54 is combined with the aforementioned frame 31. The tops of the two second upper guide plates 57 extend respectively to the top of the two first upper guide plates 511, and the aforementioned inclined slide 3, the two second guide plates 55, and the two second upper guide plates 57 jointly form a second guide channel 59. The plant fiber cup cover 1 on the aforementioned inclined slide 3 passes through the aforementioned first guide channel 53 and the second guide channel 59 in sequence, so that the plant fiber cup cover 1 will not deviate to the sides or tip over when it slides freely.

[0040] See also Fig.10As shown, the first shooting device 6 includes a first camera 61 for shooting the top surface image of the plant fiber cup cover 1, a fixed plate 62 and a lifting plate 63, the fixed plate 62 is connected to the lifting plate 63 by a set of adjustment mechanisms 64, the adjustment mechanism 64 includes a plurality of bearing seats 641, the bearing seats 641 are arranged on the fixed plate 62, each bearing seat 641 is movably pivotally fixed with a vertical shaft 642, the bottom of the vertical shaft 642 is fixed on the lifting plate 63, and each vertical shaft 642 is connected to each other by a synchronous belt 643 to achieve the effect of synchronous adjustment, and a knob 644 is provided on the top of one of the vertical shafts 642 in the adjustment mechanism 64, and the knob 644 is rotated to adjust the adjustment mechanism 64. The button 644 can adjust the position height of the lifting plate 63. The lifting plate 63 is provided with a through hole 630 at the center of the plate body. The lifting plate 63 is provided with at least one fixed bracket 631 to set the aforementioned first camera 61 above the through hole 630, and the lifting plate 63 is further provided with a plurality of second cameras 65, which are used to capture the external side image of the aforementioned plant fiber cup cover 1. The position height of the lifting plate 63 can be adjusted by rotating the knob 644 of the aforementioned adjustment mechanism 64, and the position height of each second camera 65 and the aforementioned first camera 61 can be adjusted synchronously. The first camera 61 and the second camera 65 of the aforementioned first shooting device 6 can completely capture the image of the plant fiber cup cover 1 in a translucent state.

[0041] Please also see Figure 4 and Fig. 9 As shown, the second camera device 7 is disposed below the side of the inclined slide 3 which is not used for placing the plant fiber cup covers 1. The second camera device 7 includes a third camera 71 disposed below the frame 31. The first annular light source 33 is used to illuminate the plant fiber cup covers 1 that slide down the inclined slide 3 in sequence, so that the image captured by the third camera 71 is clearer.

[0042] See also Fig.11 In the sixth embodiment shown, the transfer carrier 20 on the aforementioned conveying device can be Figure 6 In the embodiment, in addition to the first conveyor belt 2 and the inclined slide 3, a second conveyor belt 8 may be provided on the discharge side of the inclined slide 3, and a third photographing device 81 is provided above the second conveyor belt 8.

[0043] by Fig.11 The working method of the detection equipment shown in the figure, and refer to Figure 6 and Figure 7 , including the following steps: Step 1: The plant fiber cup cover 1 is set with the opening facing downward, and is first conveyed by the aforementioned first conveyor belt 2. When the plant fiber cup cover 1 on the aforementioned first conveyor belt 2 moves to the top of the aforementioned first light source 25, the first light source 25 illuminates the plant fiber cup cover 1 through the transparent area on the first conveyor belt 2 to present a translucent state. The aforementioned first shooting device 6 shoots an image of the plant fiber cup cover 1 in a translucent state, and compares the shot image with a standard image. According to the change in light and shadow brightness on the image, the internal defects of the plant fiber cup cover 1 (internal defects include internal cracks, uneven thickness, internal pores, overall too thin or too thick, etc.) can be checked; Step 2: The plant fiber cup cover 1 outputted by the first conveyor belt 2 enters the inclined slide 3, and the plant fiber cup cover 1 on the inclined slide 3 slides freely. The second shooting device 7 shoots the inner surface image of the plant fiber cup cover 1 sliding down the inclined slide 3 through the transparent area on the inclined slide 3. By comparing the shot image with the standard image, the inner surface defects of the plant fiber cup cover 1 (the inner surface defects include dirt on the inner surface, unclear outer surface pattern, damage on the inner surface, missing of part of the product structure on the inner surface, etc.) and the hoop diameter size can be checked; Step 3: The plant fiber cup cover 1 outputted by the inclined slide 3 enters the second conveyor belt 8. When the plant fiber cup cover 1 on the second conveyor belt 8 moves to the bottom of the third camera 81, the third camera 81 captures the outer surface image of the plant fiber cup cover 1. By comparing the captured image with the standard image, the outer surface defects of the plant fiber cup cover 1 can be detected (the outer surface defects include outer surface dirt, unclear outer surface pattern, outer surface damage, missing of part of the product structure on the outer surface, etc.).

[0044] In summary, the present invention is a detection device and method for optically detecting plant fiber objects. The plant fiber object takes a plant fiber cup cover 1 as an example, including a transfer carrier 20 provided on a conveying device, at least one light source, and at least one shooting device. The transfer carrier 20 on the conveying device has at least one transparent area, at least one shooting device includes a first shooting device 6, and at least one light source includes a first light source 25. The first light source 25 is located on one side of the transfer carrier 20, and the first shooting device 6 is located on the other side of the transfer carrier 20. When the detection device is in operation, a plurality of plant fiber cup covers 1 are sequentially transported by the aforementioned transfer carrier 20, and the plant fiber cup covers 1 are illuminated by the first light source 25 on one side of the transfer carrier 20 to form a semi-transparent area. The at least one shooting device 6 on the other side of the transfer carrier 20 is used to shoot the image of the plant fiber cup cover 1 in a translucent state, so as to determine whether the internal fiber structure of the plant fiber cup cover 1 has defects. The at least one shooting device further includes a second shooting device 7, which penetrates through the transparent area of ​​the transfer carrier 20 to shoot the inner surface image of the plant fiber cup cover 1. By comparing the shot image with the standard image, the inner surface and internal defects of the plant fiber cup cover 1 can be checked. Since the present invention does not need to adsorb the top of the plant fiber cup cover 1 during the detection process to detect the inner surface defects of the plant fiber cup cover 1, the present invention is suitable for detecting plant fiber objects of all shapes.

[0045] The above is a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the aforementioned principles of the present invention. These improvements and modifications should also be regarded as the scope of protection of the present invention.

Claims

1. A detection device for optically detecting plant fiber objects, characterized in that: It includes a conveying device for conveying multiple plant fiber objects, at least one light source, and at least one photographing device. The conveying device includes a transfer carrier, the transfer carrier has at least one transparent area, the at least one photographing device includes a first photographing device, and the at least one light source includes a first light source. When the detection equipment is in operation, the first light source on one side of the transfer carrier directly illuminates the plant fiber objects to present a translucent state, and then the first photographing device on the other side of the transfer carrier is used to penetrate the transparent area of ​​the transfer carrier to photograph the image of the plant fiber objects in the translucent state, or the first light source on one side of the transfer carrier penetrates the transparent area of ​​the transfer carrier to illuminate the plant fiber objects to present a translucent state, and then the first photographing device on the other side of the transfer carrier is used to directly photograph the image of the plant fiber objects in the translucent state.

2. The optical detection device for detecting plant fiber objects according to claim 1, characterized in that: The transfer carrier comprises an inclined slideway, and the inclined slideway is used for allowing a plurality of plant fiber objects to slide freely in sequence.

3. The optical detection device for detecting plant fiber objects according to claim 2, characterized in that: The transfer carrier on the aforementioned conveying device includes a first conveyor belt that loops in an annular shape and the aforementioned inclined slide, wherein the first conveyor belt is located on the loading side or the discharging side of the inclined slide, and the first conveyor belt and the inclined slide respectively have the aforementioned transparent area, the aforementioned first light source is arranged on the inner side of the first conveyor belt that is not used for placing plant fiber objects, and the aforementioned first photographing device is arranged on the outer side of the first conveyor belt that is used for placing plant fiber objects, and is simultaneously located directly above the first light source, and the aforementioned at least one photographing device further includes a second photographing device, which is arranged below the aforementioned inclined slide that is not used for placing plant fiber objects.

4. The optical detection device for detecting plant fiber objects according to claim 3, characterized in that: The top side of the aforementioned first conveyor belt is provided with a plurality of adsorption holes which are spaced apart and distributed circumferentially, and the aforementioned first conveyor belt is provided with a shading plate located above the aforementioned first light source, and the shading plate is provided with a light-transmitting hole, through which the illumination light of the first light source is limited to the range of illuminating the outer contour of the plant fiber object, and the aforementioned first conveyor belt is provided with a suction device, the aforementioned suction device includes a plurality of shells, and the plurality of shells are respectively arranged on both sides of the aforementioned first light source, and the shell is provided with at least one air suction hole, and the air suction hole is used to connect an air suction device, and the top of the aforementioned shell is provided with at least one air suction hole which is in the shape of a long strip and extends along the conveying direction of the aforementioned plant fiber object, and the air suction hole is located below the adsorption hole on the top side of the aforementioned first conveyor belt; the aforementioned inclined slide is arranged on a frame; the aforementioned second shooting device includes a third camera arranged below the aforementioned frame.

5. The optical detection device for detecting plant fiber objects according to claim 4, characterized in that: An air blowing device is provided on the outer side of the top of the aforementioned inclined slide, and the air blowing device includes a hollow cavity with at least one air inlet provided on the hollow cavity, and the air inlet is used to connect to an air supply device, and a plurality of air blowing holes arranged at intervals are provided on the bottom end surface of the hollow cavity opposite to the aforementioned inclined slide, and the air blowing holes are used to blow air to the top of the aforementioned plant fiber object, so that the plant fiber object can slide freely on the aforementioned inclined slide tightly without flying away from the inclined slide.

6. The optical detection device for detecting plant fiber objects according to claim 4, characterized in that: A guide structure is provided on the outer side of the aforementioned inclined slide, and the guide structure includes two first guide plates arranged at intervals, and the first guide plate is arranged on the bottom end surface of the aforementioned hollow cavity, and the blowing hole provided by the aforementioned blowing device is located between the two first guide plates, and at least one first upper guide plate is provided on the opposite surface between the two opposite first guide plates, and the aforementioned inclined slide, the aforementioned hollow cavity, the two first guide plates, and the two first upper guide plates are jointly framed to form a first guide channel, and the outer side surface of the aforementioned inclined slide located near the bottom is positioned on the outer side of the inclined slide by a mounting plate, and the two second guide plates and the two second upper guide plates are located between the two second guide plates, and an inclined guide plate extends from the top of the second guide plate, and the mounting plate is combined with the aforementioned frame, and the top of the aforementioned second upper guide plate extends to the top of the aforementioned first upper guide plate, and the aforementioned inclined slide, the two second guide plates, and the two second upper guide plates are jointly framed to form a second guide channel, and the plant fiber objects on the aforementioned inclined slide pass through the aforementioned first guide channel and the second guide channel in sequence.

7. The optical detection device for detecting plant fiber objects according to claim 3, characterized in that: The first shooting device includes a first camera for shooting the top surface image of the plant fiber object, a fixed plate and a lifting plate, the fixed plate is connected to the lifting plate by a set of adjustment mechanisms, the adjustment mechanism includes a plurality of bearing seats, the bearing seats are arranged on the fixed plate, a vertical shaft is movably pivotally fixed in each bearing seat, the bottom of the vertical shaft is fixed on the lifting plate, and each vertical shaft is connected to each other by a synchronous belt to achieve the effect of synchronous adjustment, a knob is arranged at the top of one of the vertical shafts in the adjustment mechanism, and the position height of the lifting plate is adjusted by rotating the knob of the adjustment mechanism, the lifting plate is provided with a through hole at the center of the plate body, the lifting plate is provided with at least one fixed bracket to set the first camera above the through hole, and the lifting plate is further provided with a plurality of second cameras, the second camera is used to shoot the external side image of the plant fiber object, the position height of the lifting plate is adjusted by rotating the knob of the adjustment mechanism, and the position height of each second camera and the first camera can be synchronously adjusted, and the first camera and the second camera of the first shooting device can completely shoot the image of the plant fiber object in a translucent state.

8. A method for optically detecting plant fiber objects, characterized in that: The invention comprises a conveying device for conveying a plurality of plant fiber objects, at least one light source, and a plurality of photographing devices. The conveying device comprises a transfer carrier, and the transfer carrier has at least one transparent area. The plurality of photographing devices comprises a first photographing device and a second photographing device, and the at least one light source comprises a first light source. The first light source is used to penetrate the transparent area provided on the transfer carrier on the conveying device to illuminate a plant fiber object in a translucent state, and then the first photographing device is used to directly photograph the image of the plant fiber object in a translucent state, so as to determine whether the internal fiber structure of the plant fiber object has defects, and the second photographing device is used to penetrate the transparent area provided on the transfer carrier on the conveying device to photograph the inner surface image of the plant fiber object.

Images