Bamboo cane defect detection table

Abstract

The bamboo cane defect detection table comprises a frame body, a bamboo strip inlet, a bamboo strip outlet, a detection channel, a front power wheel assembly and a rear power wheel assembly are arranged on the frame body; the detection channel is positioned between the bamboo strip inlet and the bamboo strip outlet and is used for forwards conveying bamboo strips; the front power wheel assembly is used for pulling the bamboo strips into the detection channel from the bamboo strip inlet; the rear power wheel assembly is used for pulling and discharging the bamboo strips in the detection channel from the bamboo strip outlet; the frame body is further provided with a visual detection device used for conducting visual detection on the surfaces of the bamboo strips in the detection channel and a laser sensor assembly used for detecting the thickness of the bamboo strips. According to the bamboo strip defect detection table and the detection method, the structural design is ideal, the design that the visual detection device, the laser sensor assembly and the front power wheel assembly and the rear power wheel assembly are matched is adopted, the intelligent degree of bamboo strip defect detection is high, bamboo strip defect detection is comprehensive, the refining degree is high, and the stability of the frame body is good. And various defects such as pits, chipped edges, split strips and worm holes can be picked out, and high-quality bamboo strip products can be screened out.

Description

Technical Field

[0001] The utility model relates to the technical field of bamboo material processing, in particular to a bamboo strip defect detection platform. Background Art

[0002] In the bamboo products industry, bamboo strips need to be spliced ​​into bamboo boards, and then other processes are carried out to make bamboo products. All bamboo strips used must go through two planes to form a uniform and full rectangular cross-section. In order to achieve this effect, the traditional process generally relies on manual visual inspection to screen and classify the shapes of the bamboo strips after breaking, and then plane the bamboo strips in different situations to carry out the corresponding plane cutting process. However, in actual operation, the manual visual inspection method often has misjudgments, resulting in the failure to remove the green and yellow bamboo in the subsequent plane cutting process; or the bamboo strips are over-plane, wasting materials.

[0003] The applicant applied for a Chinese patent in the early years: A bamboo strip color selection machine, patent number: ZL 202022913255.0, authorization publication date: 2021.07.27. It discloses a frame, the frame is provided with: a detection mechanism, the detection mechanism is provided with a bamboo strip inlet, a bamboo strip outlet and a detection device, the detection device includes a color detection device, etc.; wherein the color detection device includes components such as a color sensor and a light-emitting unit. The structural design of the mechanism is not ideal, especially the stability of the detection mechanism is not good, the intelligence level of bamboo strip defect detection is low, and the bamboo strip defect detection is not comprehensive and refined enough. Therefore, in view of the above problems, a bamboo strip defect detection station is proposed. Utility Model Content

[0004] The utility model provides a bamboo strip defect detection table, which aims to overcome the technical problems that the existing bamboo strip defect detection method is not ideal, the stability is not good, the intelligence level of bamboo strip defect detection is low, the bamboo strip defect detection is not comprehensive enough, and the bamboo strip defect detection is not refined enough.

[0005] In order to achieve the purpose, the technical solution provided by the utility model is as follows:

[0006] A bamboo strip defect detection platform comprises a frame, on which a bamboo strip inlet, a bamboo strip outlet, a detection channel located between the bamboo strip inlet and the bamboo strip outlet and used for conveying the bamboo strips forward, a front power wheel assembly for pulling the bamboo strips from the bamboo strip inlet to the detection channel, and a rear power wheel assembly for pulling the bamboo strips in the detection channel out of the bamboo strip outlet; the frame is also provided with a visual detection device for visually detecting the surface of the bamboo strips in the detection channel and a laser sensor assembly for detecting the thickness of the bamboo strips.

[0007] Furthermore, the front and rear power wheel assemblies each include a traction base and a driving wheel and a driven wheel mounted on the traction base and arranged up and down, a traction channel for bamboo strips to pass through is formed between the driving wheel and the driven wheel; an eight-shaped guide inlet is provided on the front side of the front power wheel assembly.

[0008] Furthermore, the laser sensor assembly includes upper and lower laser sensors for detecting the thickness of the bamboo strips in the detection channel, and pressure plates and pressure wheels located on the front and rear sides of the upper and lower laser sensors and the laser sensor assembly, and the pressure plates and pressure wheels are located on the upper surface of the bamboo strips in the detection channel; the pressure wheels and pressure plates restrict the bamboo strips to the measurement plane to prevent the bamboo strips from jumping or warping, thereby ensuring the verticality of the bamboo strips and the upper and lower laser sensors, thereby ensuring the measurement accuracy.

[0009] Furthermore, the visual detection device includes a first visual detection component and a second visual detection component for respectively performing visual detection on the upper and lower surfaces of the bamboo strips in the detection channel, and the first and second visual detection components both include a structured light that emits laser to the surface of the bamboo strips and generates a structured light beam on the corresponding side, and a camera that takes pictures of the surface of the bamboo strips to obtain image information, a camera bracket for supporting the camera, and a structured light bracket for supporting the structured light.

[0010] Furthermore, the laser sensor assembly also includes an automatic calibration and calibration device, which includes a fixed frame located in the detection channel and fixedly installed on the frame, and a movable frame that can be fine-tuned left and right in the fixed frame, and a bamboo strip thickness detection opening through which the bamboo strips in the detection channel pass is formed in the movable frame; the upper and lower laser sensors are fixed to the upper and lower parts of the movable frame; the movable frame is connected to an adjustment component for synchronously adjusting the upper and lower laser sensors left and right, and the adjustment component includes a guide shaft horizontally arranged on the fixed frame and a guide slider fixed on the movable frame, and the guide slider can slide left and right on the guide shaft, and one side of the fixed frame is provided with a bolt base and a rotatably connected The screw rod is on the bolt base, and a lug with a screw hole is fixed on the movable frame. The end portion of the screw rod is screwed into the screw hole. The upper and lower laser sensors are synchronously fine-tuned left and right in a manner that the movable frame moves left and right by rotating the screw rod to drive the lug, so as to achieve the purpose of centering the upper and lower surfaces of the bamboo strips by laser detection points; a transversely arranged driving cylinder and a calibration block connected to the piston rod of the driving cylinder are provided on the other side of the fixed frame. The calibration block can be pushed to the detection point between the upper and lower laser sensors by the driving cylinder. The purpose is that when the strip is not penetrated, the driving cylinder can extend the calibration block to the detection point to calibrate the measurement of the upper and lower laser sensors.

[0011] Compared with the prior art, the technical solution provided by the utility model has the following beneficial effects: the bamboo strip defect detection platform and detection method have an ideal structural design, adopt a visual detection device, a laser sensor component and a design that matches the front and rear power wheel components, the bamboo strip defect detection has a high degree of intelligence, is relatively comprehensive, has a high degree of refinement, and has good frame stability. Various defects such as dents, missing edges, cracks, worm eyes, etc. can be selected, and high-quality bamboo strip products can be screened out. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a three-dimensional structural schematic diagram of the utility model.

[0013] Figure 2 It is a three-dimensional structural schematic diagram of the utility model, wherein the box cover is not drawn.

[0014] Figure 3 for Figure 2 Schematic diagram of the three-dimensional structure from another angle.

[0015] Figure 4 It is a schematic diagram of the planar structure of the utility model.

[0016] Figure 5 This is a schematic diagram of the bamboo strip of the utility model passing through various devices in sequence.

[0017] Figure 6 It is a schematic diagram of the automatic calibration and marking device in the utility model. DETAILED DESCRIPTION

[0018] In order to further understand the content of the utility model, the utility model is described in detail in conjunction with embodiments. The following embodiments are used to illustrate the utility model but are not used to limit the scope of the utility model.

[0019] Refer to the attached Figure 1 , Figure 2 , Figure 3 and Figure 5A bamboo strip defect detection platform comprises a frame 1 and a box cover 2 which is arranged on the upper half of the frame 1. The frame 1 is provided with a bamboo strip inlet 11, a bamboo strip outlet 12, a detection channel 10 located between the bamboo strip inlet 11 and the bamboo strip outlet 12 and used to convey the bamboo strips 3 forward, a front power wheel assembly 4 which pulls the bamboo strips 3 from the bamboo strip inlet 11 into the detection channel 10, and a rear power wheel assembly 5 which pulls the bamboo strips 3 in the detection channel 10 out of the bamboo strip outlet 12; the frame 1 is also provided with a visual detection device 6 which visually detects the surface of the bamboo strips in the detection channel 10 and a laser sensor assembly 7 which detects the thickness of the bamboo strips. The frame 1 is a split frame, which comprises a conveying frame 13 arranged inside and outside and a detection frame 14 which is arranged on both sides of the conveying frame 13. The visual detection device 6 and the laser sensor assembly 7 are installed on the detection frame 14, and the detection channel 10, the front power wheel assembly 4, and the rear power wheel assembly 5 are installed on the conveying frame 13. A split frame design is adopted (i.e., the conveying frame 13 and the detection frame 14 are arranged inside and outside), that is, the conveying frame 13 and the detection frame 14 are assembled separately to prevent the vibration generated when the bamboo strips 3 pass through the conveying frame 13 from being transmitted to the detection frame 14, thereby affecting the detection effect of the bamboo strips.

[0020] Refer to the attached Figure 1 , Figure 2 and Figure 3 The front and rear power wheel assemblies 3 and 4 each include a traction base 31 and a driving wheel 32 and a driven wheel 33 mounted on the traction base 31 and arranged up and down, and a traction channel 30 for the bamboo strips 2 to pass through is formed between the driving wheel 32 and the driven wheel 33; the front side of the front power wheel assembly 3 is provided with an eight-shaped guide inlet 34; the front and rear power wheel assemblies 3 and 4 provide power for the bamboo strips 3 to pass through the detection channel 10; an anti-collision strip cover plate 15 is provided at the bamboo strip entrance 11, and the design of the anti-collision strip cover plate 15 is adopted to prevent the bamboo strips from rushing into the bamboo strip defect detection table and damaging the device when the workers reverse the bamboo strips.

[0021] Refer to the attached Figure 3 , Figure 5 and Figure 6. The laser sensor assembly 7 includes upper and lower laser sensors 71, 72 for detecting the thickness of the bamboo strips in the detection channel 10, and a pressure plate 73 and a pressure wheel 74 located on the front and rear sides of the laser sensor assembly 7, and the pressure plate 73 and the pressure wheel 74 are located on the upper surface of the bamboo strips 3 in the detection channel 10; the pressure wheel 73 and the pressure plate 74 restrict the bamboo strips 3 on the measurement plane to prevent the bamboo strips 3 from jumping or warping, so as to ensure the verticality of the bamboo strips 3 and the upper and lower laser sensors 71, 72, and ensure the measurement accuracy. The laser sensor assembly 7 also includes a control system for reading the parameters of the upper and lower laser sensors 71, 72 and outputting the thickness information of the bamboo strips 3; the control system includes an AD converter and a PLC controller connected in communication, and the AD converter is connected to the upper and lower laser sensors 71, 72. The control system is a common existing technology, and its structure and working principle will not be described in detail again. In addition, the laser sensor assembly 7 may further include a left laser sensor 75 and a right laser sensor 76 for detecting the width of the bamboo strips 3 , and the left and right laser sensors 75 , 76 are located on both sides of the detection channel 10 .

[0022] Refer to the attached Figure 2 , Figure 4 and Figure 5 The visual inspection device 6 includes a first visual inspection component 61 and a second visual inspection component 62 for visually inspecting the upper and lower surfaces of the bamboo strips 3 in the inspection channel 10, respectively. The first and second visual inspection components 61 and 62 each include a structured light 63 that emits laser light to the surface of the bamboo strips 3 and generates a structured light beam on the corresponding side, a camera 64 that takes a picture of the surface of the bamboo strips 3 to obtain image information, a camera bracket 65 for supporting the camera 64, and a structured light bracket 66 for supporting the structured light 63. The structured light 63 is Structured light laser transmitter The camera 64 is an industrial camera, which uses the camera head of the industrial camera to take pictures of the side of the bamboo strip 3 to obtain image information. The visual inspection device also includes a controller, which is used to receive the image information taken by the camera head of the camera 64, and identify whether the bamboo strip has defects (such as cracks on the surface of the bamboo strip, surface depressions and side depressions, etc.) according to the taken image information, so as to select and screen out high-quality bamboo strip products (such as structured light stripe images when the bamboo strip is full). The controller can also classify the bamboo strips according to their different defects. Specifically, the bamboo strips can be marked into different grades, and the bamboo strips can be sorted according to their grades in subsequent processes.

[0023] Refer to the attached Figure 2 , Figure 3 and Figure 6The laser sensor assembly 7 also includes an automatic calibration and marking device 8, which includes a fixed frame 81 located in the detection channel 10 and fixedly mounted on the frame 1 (specifically, on the detection frame 14) and a movable frame 82 that can be fine-tuned left and right in the fixed frame 81, and a bamboo strip thickness detection opening through which the bamboo strips in the detection channel 10 pass is formed in the movable frame 82; the upper and lower laser sensors 71, 72 are fixed to the upper and lower parts of the movable frame 82; the movable frame 82 is connected to an adjustment component for synchronously adjusting the upper and lower laser sensors 71, 72 left and right, and the adjustment component includes a guide shaft 83 horizontally arranged on the fixed frame 81 and a guide slider 84 fixed on the movable frame 82, and the guide slider 84 can slide left and right on the guide shaft 83, and a bolt base 85 and a rotatably connected to the bolt base 85 are provided on one side of the fixed frame 81. The screw 86 on the base 85, the movable frame 82 is fixed with a lug 87 with a screw hole, the end of the screw 86 is screwed on the screw hole, the upper and lower laser sensors 71, 72 are synchronously fine-tuned left and right by rotating the screw 86 to drive the lug 87 to move the movable frame 82 left and right to achieve the purpose of laser detection point centering of the upper and lower surfaces of the bamboo strip 3; the other side of the fixed frame 81 is provided with a transversely arranged driving cylinder 88 and a calibration block 89 (T-shaped calibration block) connected to the piston rod of the driving cylinder, the calibration block 89 can be pushed to the detection point between the upper and lower laser sensors 71, 72 by the driving cylinder 88, the purpose is that when there is no strip, the driving cylinder 88 can extend the calibration block 89 to the detection point to calibrate the measurement of the upper and lower laser sensors 71, 72.

[0024] In addition, the conveying platform 10 is also provided with a length detection mechanism for detecting the length of the bamboo strips 3, and the length detection mechanism includes a roller counter located behind the bamboo strip entrance 11. The roller counter detects the length of the bamboo strips 3 by the number of revolutions of the length counting gear 100 driven by the upper surface of the bamboo strips during the forward transmission of the bamboo strips on the conveying platform 10. The roller counter is a common design in the prior art, and its internal structure and working principle will not be described in detail again.

[0025] The above is a detailed description of the utility model in combination with the embodiments, but the contents described are only preferred embodiments of the utility model and cannot be considered to limit the scope of implementation of the utility model. All equivalent changes and improvements made within the scope of application of the utility model should still fall within the scope of the patent coverage of the utility model.

Claims

1. A bamboo strip defect detection platform, comprising a frame, characterized in that: The frame is provided with a bamboo strip inlet, a bamboo strip outlet, a detection channel located between the bamboo strip inlet and the bamboo strip outlet and used for conveying the bamboo strips forward, a front power wheel assembly for pulling the bamboo strips from the bamboo strip inlet to the detection channel, and a rear power wheel assembly for pulling the bamboo strips in the detection channel out of the bamboo strip outlet; the frame is also provided with a visual detection device for visually detecting the surface of the bamboo strips in the detection channel and a laser sensor assembly for detecting the thickness of the bamboo strips.

2. The bamboo strip defect detection platform according to claim 1, characterized in that: The front and rear power wheel assemblies each include a traction base, and a driving wheel and a driven wheel mounted on the traction base and arranged up and down, a traction channel for bamboo strips to pass through is formed between the driving wheel and the driven wheel; an eight-shaped guide inlet is provided on the front side of the front power wheel assembly.

3. The bamboo strip defect detection platform according to claim 1, characterized in that: The laser sensor assembly includes upper and lower laser sensors for detecting the thickness of the bamboo strips in the detection channel, and pressure plates and pressure wheels located on the front and rear sides of the upper and lower laser sensors and the laser sensor assembly, and the pressure plates and pressure wheels are located on the upper surface of the bamboo strips in the detection channel; the pressure wheels and pressure plates restrict the bamboo strips on the measurement plane to prevent the bamboo strips from jumping or warping, thereby ensuring the verticality of the bamboo strips and the upper and lower laser sensors, and ensuring the measurement accuracy.

4. The bamboo strip defect detection platform according to claim 1, characterized in that: The visual inspection device includes a first visual inspection component and a second visual inspection component for respectively performing visual inspection on the upper and lower surfaces of the bamboo strips in the inspection channel. The first and second visual inspection components both include a structured light that emits laser light to the surface of the bamboo strips and generates a structured light beam on the corresponding side, a camera that takes pictures of the surface of the bamboo strips to obtain image information, a camera bracket for supporting the camera, and a structured light bracket for supporting the structured light.

5. The bamboo strip defect detection platform according to claim 3, characterized in that: The laser sensor assembly also includes an automatic calibration and calibration device, which includes a fixed frame located in the detection channel and fixedly installed on the frame, and a movable frame that can be fine-tuned left and right in the fixed frame, and a bamboo strip thickness detection opening through which the bamboo strips in the detection channel pass is formed in the movable frame; the upper and lower laser sensors are fixed to the upper and lower parts of the movable frame; the movable frame is connected to an adjustment component for synchronously adjusting the upper and lower laser sensors left and right, and the adjustment component includes a guide shaft horizontally arranged on the fixed frame and a guide slider fixed on the movable frame, and the guide slider can slide left and right on the guide shaft, and one side of the fixed frame is provided with a bolt base and a rotatably connected to the bolt A screw rod on the base, a lug with a screw hole is fixed on the movable frame, the end of the screw rod is screwed into the screw hole, and the upper and lower laser sensors are synchronously fine-tuned left and right in a way that the movable frame moves left and right by rotating the screw rod to drive the lug, so as to achieve the purpose of centering the upper and lower surfaces of the bamboo strips by laser detection points; a laterally arranged driving cylinder and a calibration block connected to the piston rod of the driving cylinder are provided on the other side of the fixed frame, and the calibration block can be pushed to the detection point between the upper and lower laser sensors by the driving cylinder, so that when the strips are not penetrated, the driving cylinder can extend the calibration block to the detection point to calibrate the measurements of the upper and lower laser sensors.

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