Foam board appearance automatic detection and boxing device

Abstract

The utility model relates to the technical field of cystosepiment production, in particular to a cystosepiment appearance automatic detection and boxing device which comprises a size detection device used for detecting whether the size of a cystosepiment meets the requirement or not; the chamfer detection device is used for detecting whether the foam board is chamfered or not; the character recognition device is used for detecting whether the code of the foam board is consistent with the pre-code or not; the defect detection device is used for detecting whether the appearance of the foam board meets the standard or not; the conveying belt is arranged at the feeding end of each device and used for conveying the foam board, and the height of the conveying belt is gradually reduced in the advancing direction of the foam board; and the material receiving plates are arranged at the tail ends of the conveyor belts and used for moving out defective products. The detection device has the following beneficial effects that the labor cost is reduced, the detection time is saved, and the appearance judgment accuracy is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of foam board production, in particular to a foam board appearance automatic detection and packing device. Background Art

[0002] All foam boards, including slotted boards, processed boards, special-shaped boards, etc., may have appearance problems that may affect the performance of the foam boards, so it is necessary to ensure that the appearance of the foam board products meets the requirements. At present, the appearance inspection of foam boards mainly relies on manual visual observation. Production personnel and quality inspectors need to pay attention to whether the foam board number is wrong, whether the foam board has appearance defects, whether the length, width and height meet the requirements, and if chamfered, what is the chamfer angle, etc. There are many factors. The number of products is large and the observation and inspection time is limited, so there are large subjective differences and mistakes, high error rate, and many omissions.

[0003] In order to reduce labor costs, save inspection time, and improve the accuracy of appearance judgment, the application of a fully automatic foam board appearance automatic inspection and packing device is imperative. Utility Model Content

[0004] The utility model aims to provide a foam board appearance automatic detection and packing device, which has the characteristics of reducing labor costs, saving inspection time, and improving the accuracy of appearance judgment.

[0005] The above technical purpose of the utility model is achieved through the following technical solutions: a foam board appearance automatic detection and packing device, comprising:

[0006] A size detection device, used to detect whether the size of the foam board meets the requirements;

[0007] A chamfer detection device, used to detect whether the foam board is chamfered;

[0008] A character recognition device is used to detect whether the code of the foam board is consistent with the pre-code;

[0009] Defect detection device, used to detect whether the appearance of the foam board meets the standards;

[0010] A conveyor belt, arranged at the feeding end of each of the devices, for conveying the foam board, the height of the conveyor belt gradually decreasing along the advancing direction of the foam board;

[0011] A receiving plate is arranged at the end of each conveyor belt and is used to remove defective products.

[0012] Preferably, each of the devices is fully enclosed and lightproof, and its inlet and outlet are installed with lightproof flexible plastic cloth, and there is a lighting lamp inside, so that the brightness inside can be kept constant and not be affected by the external day and night climate.

[0013] Preferably, each of the devices comprises a photoelectric switch and an industrial camera. The photoelectric switch is used to determine the position of the foam board under the camera. When the foam board on the conveyor belt passes through the photoelectric switch, the industrial camera takes a picture of the foam board.

[0014] Preferably, the industrial camera includes an industrial camera, a CCD and an image acquisition card. The image acquisition card can be used to read CCD data and is connected to an industrial control system computer to form an image acquisition system for the entire device. The industrial camera shoots the foam board at different angles, and the CCD converts the optical image captured by the industrial camera into a digital signal. At the same time, the photoelectric switch is triggered and sends a pulse to the image acquisition card. At this time, the image acquisition card starts to read the digital image information of the CCD. After reading, the digital image data is transmitted to the computer and compared with the standard information entered in advance by the computer to detect whether the foam board is qualified.

[0015] Preferably, the size detection device also includes a laser displacement sensor in addition to the industrial camera and the photoelectric switch to more accurately measure the length, width and thickness of the foam board. The laser displacement sensor includes a semiconductor laser, a transmitter, a detector and a measuring circuit. The semiconductor laser is used to generate laser. The transmitter projects the laser beam onto the foam board to be measured. The detector receives the laser beam reflected back by the measured object and converts it into an electrical signal. The measuring circuit processes and records the measured electrical signal data and digitizes it.

[0016] Preferably, the receiving plate is connected to a rotating device, which includes a bracket and an electric push rod. The receiving plate is rotatably connected to the bracket. One end of the electric push rod is hinged to the bracket, and the other end is hinged to the bottom of the receiving plate. The thickness of the receiving plate is not greater than the height difference between two adjacent conveyor belts. A tray for placing foam boards is arranged next to each bracket.

[0017] In summary, the utility model has the following beneficial effects:

[0018] 1. Through the orderly coordination of the four detection devices, namely, the size detection device, the chamfer detection device, the text recognition device, and the defect detection device, and the assembly line delivery mode, the manpower inspection cost and time cost originally required in the intermediate process are greatly reduced;

[0019] 2. Automatic comparison detection under the computer control of the industrial control system reduces the frequency of subjective errors by personnel. There is no need for visual observation and comparison inspection. Personnel put the foam board to be tested from the head end of the conveyor belt and collect the qualified foam board at the end of the conveyor belt.

[0020] 3. Zoning inspection can more specifically find out where the problem lies, timely block the outflow of subsequent products, and avoid accumulating product problems. Trays are placed next to the 4 detection devices, waiting to receive unqualified products moved out by the receiving plate at a 45° tilt. Regardless of size, chamfer, coding or appearance defects, any problem found in the inspection can be directly intercepted from the line and reworked and repaired, thereby improving the output efficiency of qualified foam boards that can be packaged. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 is a schematic diagram of an embodiment;

[0022] Figure 2 is a top view of the size detection device in the embodiment;

[0023] Figure 3 is a front view of the size detection device when the receiving plate receives the foam plate in the embodiment;

[0024] Figure 4 This is a positive view of the size detection device when the receiving plate rotates in the embodiment.

[0025] In the figure, 1. size detection device; 2. chamfer detection device; 3. text recognition device; 4. defect detection device; 5. conveyor belt; 61. receiving plate; 62. bracket; 63. electric push rod; 64. tray. DETAILED DESCRIPTION

[0026] The utility model is further described in detail below in conjunction with the accompanying drawings.

[0027] This specific embodiment is merely an explanation of the present invention and is not a limitation of the present invention. After reading this specification, those skilled in the art may make non-creative modifications to the present embodiment as needed, but such modifications are protected by patent law as long as they are within the scope of the claims of the present invention.

[0028] Example:

[0029] A foam board appearance automatic detection and packing device

[0030] like Figure 1 As shown, it includes a size detection device 1, a chamfer detection device 2, a text recognition device 3, and a defect detection device 4 which are arranged in sequence. The size detection device 1 is used to detect whether the size of the foam board meets the requirements, the chamfer detection device 2 is used to detect whether the foam board is chamfered, the text recognition device 3 is used to detect whether the coding of the foam board is consistent with the pre-coding, and the defect detection device 4 is used to detect whether the appearance of the foam board meets the standards. The device is also equipped with an industrial control system computer.

[0031] The feed ends of the size detection device 1, the chamfer detection device 2, the character recognition device 3, and the defect detection device 4 are respectively provided with conveyor belts 5 for conveying the foam board. The conveyor belts 5 are driven by a motor, and each conveyor belt 5 extends from the feed end of each device to the inside of the device. Along the forward direction of the foam board, the height of the plurality of conveyor belts 5 is gradually reduced. A tray 64 is respectively provided on the ground near the end of each conveyor belt 5 for placing defective products.

[0032] The four detection devices are fully enclosed and light-proof, and the inlets and outlets are installed with light-proof flexible plastic cloth. There are lighting lamps with specific brightness inside to keep the brightness inside constant and not be affected by the external day and night climate.

[0033] At the same time, the four detection devices are equipped with industrial cameras and photoelectric switches. The industrial camera includes an industrial camera head, a CCD and an image acquisition card. The image acquisition card can read the CCD data and connect to the industrial control system computer to form the image acquisition system of the entire device. The industrial camera in each area focuses on capturing different detection points. The photoelectric switch is used to determine the position of the foam board under the camera. The photoelectric switch is located at the conveyor belt 5 directly below the camera. When the foam board moves to the bottom of the camera, that is, when the foam board on the conveyor belt 5 passes the photoelectric switch, the industrial camera shoots the foam board at different angles. The CCD converts the optical image captured by the camera into a digital signal. At the same time, the photoelectric switch is triggered and sends a pulse to the image acquisition card. At this time, the image acquisition card starts to read the digital image information of the CCD. After reading, the digital image data is transmitted to the computer, and compared with the standard information pre-entered by the computer to detect whether the PET board is qualified.

[0034] The size detection device 1 is mainly equipped with a laser displacement sensor in addition to the industrial camera and the photoelectric switch to more accurately measure the length, width and thickness of the foam board. The laser displacement sensor includes a semiconductor laser, a transmitter, a detector and a measuring circuit. The semiconductor laser generates laser light, the transmitter projects the laser beam onto the foam board to be measured, the detector receives the laser beam reflected back by the measured object and converts it into an electrical signal, and the measuring circuit processes and records the measured electrical signal data and digitizes it.

[0035] The industrial camera of the size detection device 1 is used to obtain the contour image of the foam board, and cooperate with the laser displacement sensor to determine the length, width and thickness of the foam board. The industrial camera of the chamfer detection device 2 is used to identify and determine whether the detected object is chamfered. If it is chamfered, the chamfer angle is calculated, and the receiving plate 61 is directly started to move the foam board out of the assembly line. If it is not chamfered, the foam board is moved to the subsequent text recognition device 3 through the conveyor belt 5. The industrial camera of the text recognition device 3 is used to identify the foam board code and determine whether it is consistent with the pre-numbered code. If it is consistent, the next item is carried out, otherwise the receiving plate 61 is started to move the foam board out of the assembly line.

[0036] The industrial camera of the defect detection device 4 is used to identify the defects of the foam board and upload the identification results to the industrial control system computer. The industrial control system computer compares the captured image information with the preset defect library. The defect library contains almost all the types and degrees of defects of PVC / PET and can be manually updated. The defect library also contains the tolerance of each defect. If it exceeds the tolerance range, it will become a detected defect and be presented on the terminal interface. Production personnel can also judge the defect situation by themselves according to the image situation on the industrial control system computer screen to increase the accuracy, and directly remove the defect from the line.

[0037] like Figure 2-Figure 4 As shown, the receiving plate 61 is connected to a rotating device, which includes a bracket 62 and an electric push rod 63. The receiving plate 61 is rotatably connected to the bracket 62. One end of the electric push rod 63 is hinged to the bracket 62, and the other end is hinged to the bottom of the receiving plate 61. The thickness of the receiving plate 61 is not greater than the height difference between two adjacent conveyor belts 5, and the tray 64 is arranged on the side of the receiving plate 61 away from the conveyor belt 5.

[0038] Operation process of a foam board appearance automatic detection and packing device:

[0039] Place the foam board to be tested at the head end of the conveyor belt 5, start the device, drive the motor to drive several conveyor belts 5 to run synchronously, and the foam board moves to the foam board size detection device 1 at a certain speed along with the conveyor belt 5 driven by the drive motor. When the foam board on the conveyor belt 5 passes through the photoelectric switch, the industrial camera shoots the foam board at different angles to obtain the contour image of the foam board, and cooperates with the laser displacement sensor to accurately measure the length, width and thickness of the foam board. The conductor laser on the laser displacement sensor generates laser, and the transmitter projects the laser beam onto the foam board to be tested. The detector receives the laser beam reflected back by the foam board to be tested and converts it into an electrical signal. The measuring circuit processes and records the measured electrical signal data, and uploads it digitally to the industrial control system computer. The industrial control system computer compares the length, width and thickness of the obtained foam board with the preset length, width and thickness of the foam board to determine whether the size is within the standard value tolerance range, for example, the length of the large board is usually required to be about 2425mm, and the length of the small board is about 1215mm. If the size does not meet the preset requirements, the industrial control system computer table displays a red mark, and the receiving plate 61 rotates to the rear of the corresponding conveyor belt 5, and the foam board is delivered to the receiving plate 61, and then the receiving plate 61 is tilted 45 degrees to deliver the unqualified board to the tray 64. If the size meets the requirements, the foam board flows into the chamfer detection device 2 along the conveyor belt 5.

[0040] When the foam board on the conveyor belt 5 passes through the photoelectric switch of the chamfering monitoring device, the industrial camera of the chamfering detection device 2 is used to identify and determine whether the detected object is chamfered. If it is chamfered, the chamfer angle is calculated, and the receiving plate 61 is started to move the foam board out of the assembly line. If it is not chamfered, the foam board is moved into the subsequent text recognition device 3 through the conveyor belt 5.

[0041] When the foam board on the conveyor belt 5 passes through the photoelectric switch of the text recognition device 3, the industrial camera of the text recognition device 3 is used to identify the foam board code to determine whether it is consistent with the pre-numbered code. If it is inconsistent, the receiving plate 61 starts to move the foam board out of the assembly line. If it is consistent, the foam board is sent to the final defect detection device 4 through the conveyor belt 5.

[0042] The industrial camera of the defect detection device 4 is used to identify defects in the foam board and upload the identification results to the industrial control system computer. The industrial control system computer compares the captured image information with the preset defect library. The defect library contains almost all defect types and degrees of PVC / PET and can be updated manually. The main identification types are holes, scratches, dents, and contamination. The defect library also contains the tolerance of each defect, which is obtained by incorporating the inspection standard into the industrial control system computer comparison system.

[0043] For example, inspection criteria for holes and contamination:

[0044] Hole inspection standards:

[0045] ①Hole with diameter < 2mm is acceptable; ②Hole with diameter 2mm≤φ<3mm, ≤15 holes / surface / m2 per square meter, and the center distance between any two adjacent holes is ≥10mm, which is acceptable; ③Hole with diameter 3mm≤φ<5mm, ≤5 holes / surface / m2 per square meter, and the center distance between any two adjacent holes is ≥15mm, which is acceptable. (Preferentially used in shells, eliminated in the block process; can be used in small quantities in webs, the proportion does not exceed 10%); ④Hole with diameter 5mm<φ<10mm, ≤5 holes / surface / m2 per square meter, and the center distance between any two adjacent holes is ≥20mm, which is acceptable. (Preferentially used in shells, eliminated in the block process; can be used in small quantities in webs, the proportion does not exceed 5%); ⑤Hole with diameter ≥10mm is not allowed.

[0046] Pollution inspection standards:

[0047] Definition of foreign matter: All foreign matter with a diameter of 2mm, the number shall not exceed 1; Definition of contaminated surface: The number of contamination on each sheet (including all surfaces) with a diameter greater than 10mm shall not exceed 1; Oil pollution: Silicone or similar materials of any size are not allowed; Definition of stains: Surfaces with fingerprints, sweat stains, watermarks or other black stains; Definition of oil stains: Surfaces with traces of oil immersion.

[0048] The situation beyond the tolerance range will be displayed as a detected defect on the terminal interface. The test results displayed on the terminal interface are presented in the following table:

[0049] Industrial computer terminal test result interface

[0050] ID Pre-numbered Test number Number of defects Call the police Dimensions (mm) 1 ST1-1 ST1-1 3 2300*1260*50 2 ST11 ST11 2 2360*1320*50.5 3 ST24 ST24 3 2060*1260*50 4 SL9 SL9 1 2120*1320*50 5 SL23 SL24 3 yes 2040*1240*50 6 SL36 SL36 3 2100*1300*49.5

[0051] ID Chamfer Angle 1 30.1° 2 30.2 3 30.1° 4 30.1°

[0052] Production personnel can also judge the defects by themselves according to the images on the computer screen of the industrial control system to increase the accuracy. If there are defects, the receiving plate 61 will start to move the foam board out of the production line. If there are no defects such as holes, scratches, dents, pollution, etc., the inspected products with appearance meeting the requirements will be output through the conveyor belt 5 and the end conveyor belt 5. Under the operation guarantee of the four inspection devices, there is no need for visual observation and comparison inspection. Personnel can collect qualified foam boards at the end of the conveyor belt 5 for packing.

Claims

1. A foam board appearance automatic detection and packing device, characterized in that: include: A size detection device (1) is used to detect whether the size of the foam board meets the requirements; A chamfer detection device (2) is used to detect whether the foam board is chamfered; A character recognition device (3) is used to detect whether the code of the foam board is consistent with the pre-code; A defect detection device (4) is used to detect whether the appearance of the foam board meets the standards; A conveyor belt (5) is arranged at the feeding end of each of the devices and is used to convey the foam board, and the height of the conveyor belt (5) gradually decreases along the advancing direction of the foam board; A receiving plate (61) is arranged at the end of each of the conveyor belts (5) and is used to remove defective products.

2. The foam board appearance automatic detection and packing device according to claim 1 is characterized in that: Each of the devices is fully enclosed and lightproof, and its inlet and outlet are installed with lightproof flexible plastic cloth, and there is a lighting lamp inside, so that the brightness inside can be kept constant and is not affected by the external day and night climate.

3. The foam board appearance automatic detection and packing device according to claim 1 is characterized in that: Each of the devices comprises a photoelectric switch and an industrial camera. The photoelectric switch is used to determine the position of the foam board under the camera. When the foam board on the conveyor belt (5) passes through the photoelectric switch, the industrial camera takes a picture of the foam board.

4. The foam board appearance automatic detection and packing device according to claim 3 is characterized in that: Industrial cameras include industrial cameras, CCDs and image acquisition cards. The image acquisition card can be used to read CCD data and is connected to an industrial control system computer to form the image acquisition system of the entire device. The industrial camera shoots the foam board at different angles. The CCD converts the optical image captured by the industrial camera into a digital signal. At the same time, the photoelectric switch is triggered and sends a pulse to the image acquisition card. At this time, the image acquisition card starts to read the digital image information of the CCD. After reading, the digital image data is transmitted to the computer and compared with the standard information entered in advance by the computer to detect whether the foam board is qualified.

5. The foam board appearance automatic detection and packing device according to claim 4, characterized in that: The size detection device (1) includes a laser displacement sensor in addition to an industrial camera and a photoelectric switch, so as to more accurately measure the length, width and thickness of the foam board. The laser displacement sensor includes a semiconductor laser, a transmitter, a detector and a measuring circuit. The semiconductor laser is used to generate laser light. The transmitter projects the laser beam onto the foam board to be measured. The detector receives the laser beam reflected by the measured object and converts it into an electrical signal. The measuring circuit processes and records the measured electrical signal data and digitizes it.

6. The foam board appearance automatic detection and packing device according to claim 1, characterized in that: The receiving plate (61) is connected to a rotating device, which includes a bracket (62) and an electric push rod (63). The receiving plate (61) is rotatably connected to the bracket (62). One end of the electric push rod (63) is hinged to the bracket (62), and the other end is hinged to the bottom of the receiving plate (61). The thickness of the receiving plate (61) is not greater than the height difference between two adjacent conveyor belts (5). A tray (64) for placing a foam board is arranged next to each bracket (62).

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