An automated production line for plywood hot pressing process

Abstract

This utility model relates to the field of production line technology, and in particular to an automated production line for the hot pressing process of plywood. It includes a feeding device, a lifting and palletizing device, a transfer conveyor assembly, a plywood guide frame, multiple hot presses, and a finished product inspection and repair device. The feeding device, lifting and palletizing device, and multiple hot presses are arranged sequentially, with the feeding device and lifting and palletizing device adjacent to each other. The transfer conveyor assembly moves back and forth between the lifting and palletizing device and the multiple hot presses. A body guide frame is installed on one side of each of the multiple hot presses. The finished product inspection and repair device is located on the side of the multiple hot presses away from the first hot press, and includes a finished product conveyor line. It also includes an automated control system, which includes a feeding control system, a lifting and palletizing control system, a transfer conveyor control system, a hot press control system, and a finished product inspection and repair system. This production line improves production efficiency and product quality while reducing labor costs and material waste.

Description

Technical Field

[0001] This utility model relates to the field of hydraulic press technology, and in particular to an automated production line for the hot pressing process of plywood. Background Technology

[0002] The currently known plywood hot pressing process requires first preparing the glued plywood blank, then placing the blank into a hot press, applying a certain pressure, and simultaneously raising the temperature to allow the adhesive to cure under high temperature and high pressure. During this process, workers need to place the glued plywood blank onto a conveyor belt, and then the lifting frame and pusher plate transport it layer by layer into a multi-layer hot press.

[0003] This feeding method relies on manual labor to feed the slabs onto the conveyor belt, and then place them layer by layer into the hot press via a lifting frame. This method is not only inefficient but also poses safety hazards. During manual feeding, workers need to be in close contact with the equipment, which increases labor intensity and safety risks. Errors in the position of the slabs after feeding directly affect the quality stability of the processed products. Moreover, it is difficult to guarantee consistent or qualified clamping accuracy during manual loading and unloading, affecting the processing precision and quality of the products. After the finished products are pressed by the hot press, inspection is also done manually. Humans are prone to fatigue from long hours of repetitive work, leading to decreased inspection efficiency and increased error rates. In today's rapidly developing technology, manual inspection clearly impacts efficiency.

[0004] Therefore, this utility model proposes an automated production line for the hot pressing process of plywood, which achieves the purpose of automated feeding, automated hot pressing, and automated inspection and repair of plywood. Summary of the Invention

[0005] The purpose of this utility model is to solve the problems existing in the prior art and to propose an automated production line for the hot pressing process of plywood.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] An automated production line for plywood hot pressing includes a feeding device, a lifting and stacking device, a transfer conveying component, a plywood guide frame, multiple hot presses, and a finished product inspection and repair device. The feeding device, the lifting and stacking device, and the multiple hot presses are arranged sequentially, with the feeding device and the lifting and stacking device arranged adjacent to each other. The transfer conveying component moves back and forth between the lifting and stacking device and the multiple hot presses. The unloading mechanism moves back and forth between the multiple hot presses and the finished product stacking area. The machine body guide frame is respectively provided on one side of each of the multiple hot presses.

[0008] The feeding device is used to transport plywood to the lifting and stacking device, the transfer conveying assembly is used to transport the plywood in the lifting and stacking device to multiple hot presses, and the unloading mechanism 6 is used to transport the pressed finished products to the finished product stacking area.

[0009] The finished product inspection and repair device is located on one side of the finished product stacking area, and the finished product inspection and repair device includes a finished product conveyor line;

[0010] It also includes an automated control system, which includes a feeding control system, a lifting and palletizing control system, a transfer and conveying control system, a hot press control system, an unloading control system, a robotic arm control system, and a finished product inspection and repair system.

[0011] Furthermore, the feeding device includes a frame, on which a suction cup assembly is slidably mounted. The suction cup assembly includes a pair of crossbeams spanning the frame. The pair of crossbeams drive the entire suction cup assembly to slide on the frame. A suction cup frame mounting plate is slidably mounted on the pair of crossbeams. A long guide rail mounting plate that slides vertically passes through the suction cup frame mounting plate. A suction cup frame is fixedly connected to the bottom of the long guide rail mounting plate. Multiple suction cups are arranged below the suction cup frame.

[0012] Furthermore, the lifting and palletizing device includes a fixed frame and a lifting frame. The lifting frame is slidably connected to the fixed frame. A plurality of horizontal supports are provided on the side of the lifting frame near the fixed frame. A plurality of material feeding supports are respectively provided on the plurality of horizontal supports. The material feeding supports are perpendicular to the horizontal supports. Stops are respectively provided at both ends of the material feeding supports.

[0013] Furthermore, one side of the lifting frame is a solid plate.

[0014] Furthermore, the plywood guide frame is connected to the body of the hot press. The plywood guide frame includes a concave frame, guide brackets, and guide wheels. Several guide brackets are respectively arranged on the left and right sides of the concave frame, and several guide wheels are arranged on the several guide brackets.

[0015] Furthermore, the spacing between adjacent feeding supports in the longitudinal direction is equal to the spacing between adjacent guide supports in the longitudinal direction.

[0016] Furthermore, the finished product inspection and repair system includes a data acquisition module, an analysis and inspection module, a defect repair module, and a data processing feedback module. The data acquisition module is used to acquire finished product images, the analysis and inspection module is used to analyze defects in the finished product images, the defect repair module is used to repair defects in the finished product, and the data processing feedback module records and analyzes the data during the inspection and repair process.

[0017] Furthermore, the data acquisition module is located above the finished product conveyor line, and the data acquisition module includes multiple vision sensors. The analysis and detection module includes a deep learning model, and the defect repair module includes a robotic arm repair device and a robotic arm path planning module.

[0018] Compared with existing technologies, the automated production line for the hot pressing process of plywood provided by this utility model has the following advantages:

[0019] 1. Automated production lines have a reasonable layout, reduce manual operation, increase the safety of the production process, reduce reliance on manual labor, reduce labor costs;

[0020] 2. The automated feeding device and transfer conveyor assembly can accurately transport the slab into the hot press, ensuring that the feeding position is consistent each time, thereby improving the quality stability of the processed products;

[0021] 3. When the plywood enters the hot press, the transfer conveyor assembly 3 automatically and accurately positions each plywood blank onto the heating plate of the hot press, which can ensure that the position of the plywood blank on the heating plate of the hot press is determined, avoid the blank shifting or slipping due to improper manual placement, and ensure the safety of the operators.

[0022] 4. High degree of automation, improving production efficiency. The plywood blanks are fed by a feeding device and transported by a transfer conveyor. After the blanks are hot-pressed, the finished product inspection and repair device detects defects in the finished plywood and repairs them, which greatly improves production efficiency and shortens the production cycle. Attached Figure Description

[0023] Figure 1 This is a three-dimensional structural diagram of the production line of this utility model;

[0024] Figure 2 This is a top view of the production line of this utility model;

[0025] Figure 3 This is a schematic diagram of the feeding device of this utility model;

[0026] Figure 4 This is a schematic diagram of the suction cup assembly structure;

[0027] Figure 5 This is a schematic diagram of the lifting and palletizing device of this utility model. Figure 1 ;

[0028] Figure 6 This is a schematic diagram of the lifting and palletizing device of this utility model. Figure 2 ;

[0029] Figure 7This is a three-dimensional structural diagram of the transfer and conveying component of this utility model;

[0030] Figure 8 for Figure 7 Side view structural diagram;

[0031] Figure 9 This is a schematic diagram of the plywood guide frame structure of this utility model;

[0032] Figure 10 This is a schematic diagram of the automated control system of this utility model;

[0033] In the diagram: 1. Feeding device; 10. Suction cup assembly; 11. Crossbeam; 12. Suction cup frame mounting plate; 13. Motor mounting base; 14. Long guide rail mounting plate; 15. Suction cup frame.

[0034] 2. Lifting and palletizing device; 20. Fixed frame; 21. Lifting frame; 211. Solid plate; 22. Horizontal support; 23. Material feeding support.

[0035] 3. Transfer and conveying assembly; 31. Moving flat plate; 32. Moving base plate; 33. Square frame; 34. Second transverse support; 35. Second guide wheel; 36. Positioning and clamping push plate device; 361. Fixing pin; 362. Fixing pin mounting plate; 363. Fixing and clamping cylinder.

[0036] 4. Plywood guide frame; 40. Concave frame; 41. Guide bracket; 42. Guide wheel.

[0037] 5. Hot press,

[0038] 6. Unloading mechanism,

[0039] 7. Finished product inspection and repair device; 71. Finished product conveyor line. Detailed Implementation

[0040] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0041] In the description of this utility model, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "first", "second", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0042] Example 1, as Figures 1-10 As shown, an automated production line for plywood hot pressing includes a feeding device 1, a lifting and stacking device 2, a transfer conveying component 3, a plywood guide frame 4, multiple hot presses 5, and a finished product inspection and repair device 7. The feeding device 1, the lifting and stacking device 2, and the multiple hot presses are arranged sequentially. The feeding device 10 and the lifting and stacking device 2 are arranged adjacent to each other. The transfer conveying component 3 moves back and forth between the lifting and stacking device 2 and the multiple hot presses 7. The unloading mechanism 6 moves back and forth between the multiple hot presses 5 and the finished product stacking area. A body guide frame 40 is respectively provided on one side of each of the multiple hot presses 5.

[0043] The feeding device 1 is used to transport plywood blanks to the lifting and stacking device 2, the transfer conveying assembly 3 is used to transport the plywood blanks in the lifting and stacking device 2 to multiple hot presses, and the unloading mechanism 6 is used to transport the pressed plywood finished products to the finished product stacking area.

[0044] The finished product inspection and repair device 7 is located on one side of the finished product stacking area, and the finished product inspection and repair device 7 includes a finished product conveyor line 71;

[0045] It also includes an automated control system, which includes a feeding control system, a lifting and palletizing control system, a transfer and conveying control system, a hot press control system, an unloading control system, a robotic arm control system, and a finished product inspection and repair system.

[0046] The feeding control system controls the feeding device 1, the lifting and palletizing control system controls the lifting and palletizing device 2, the transfer conveying control system controls the transfer conveying component 3, the hot press control system controls multiple hot presses 5, the unloading control system controls the unloading mechanism 6, and the finished product inspection and repair system controls the finished product inspection and repair device 7.

[0047] This technical solution automates the hot pressing process of plywood blanks. Multiple plywood blanks are automatically fed by a feeding device 1 and then placed onto a lifting and stacking device 2. A transfer conveyor assembly 3 then transports these blanks to a hot press 5. After the hot press 5 completes the pressing process, a discharge mechanism 6, identical to that used in the transfer conveyor assembly 3, removes the finished plywood. A robotic arm then picks up the finished plywood and places it onto a finished product conveyor line 71. A finished product inspection and repair device 7 inspects the finished product and repairs any defects.

[0048] Example 2, as Figures 3-4 As shown, the feeding device 1 includes a feeding frame, on which a suction cup assembly 10 is slidably mounted. The suction cup assembly 10 includes a pair of crossbeams 11 spanning the feeding frame, and a suction cup mounting plate 12 is disposed between the pair of crossbeams 11. The suction cup mounting plate 12 can slide on the crossbeams 11. A hollow motor mounting base 13 is fixed on the suction cup mounting plate 12. Slider blocks are fixed on opposite sides inside the motor mounting base 13. A long guide rail mounting plate 14 passes through the suction cup mounting plate 12 and the motor mounting base 13. A suction cup frame slide rail is disposed on the long guide rail mounting plate 14. The suction cup frame slide rail and the slider are slidably connected. A suction cup frame 15 is fixedly connected to the lower end of the long guide rail mounting plate 14. Multiple suction cups are disposed below the suction cup frame 15. A rack is also disposed on one side of the long guide rail mounting plate 14. The first motor mounted on the motor mounting base 13 and the rack mounted on the long guide rail mounting plate 14 are driven by gear transmission, which can drive the suction cup frame 15 to reciprocate in the longitudinal direction. To better guide the suction cup holder 15, guide rods are provided at the four corners of the suction cup holder 15. The guide rods are slidably connected to the guide rod fixing plate, and the guide rod fixing plate is provided with a fixing rod on its surface, which is fixedly connected to the suction cup holder mounting plate 12.

[0049] The suction cup mounting plate 12 can slide on the crossbeam 11. Specifically, the two crossbeams 11 are respectively provided with slide rails, and the lower surface of the suction cup mounting plate 12 is fixed with a slider. The slider and the slide rail are connected in a sliding manner. Similarly, the movement of the suction cup mounting plate is also driven by the second motor.

[0050] When the automated control system is started, the sensor detects the position of the plywood blank, and the feeding control system then controls the suction cup assembly 10 to grab the plywood blank. The suction cup in the suction cup assembly 10 can pick up the plywood blank. After picking up the plywood blank, the suction cup assembly 10 slides along the feeding frame towards the lifting and stacking device 2 and places the plywood blank on the lifting and stacking device 2.

[0051] In this embodiment, the automated control system is integrated into the electrical cabinet, and an operating console is also provided and electrically connected to the electrical cabinet. The operating console has a visual operating screen, which facilitates the input or modification of parameters in the automated control system and provides a better human-computer interaction experience.

[0052] Example 3, as Figures 5-6 As shown, the lifting and palletizing device 2 includes a fixed frame 20 and a lifting frame 21. The lifting frame 21 is slidably connected to the fixed frame 20. Several horizontal supports 22 are provided on the side of the lifting frame 21 closest to the fixed frame 20. Several feeding supports 23 are respectively provided on the horizontal supports 22. The feeding supports 23 are perpendicular to the horizontal supports 22, and stops are provided at both ends of the feeding supports 23, which can effectively position and limit the plywood blanks. The lifting and palletizing device 2 is driven by a third motor, which drives the lifting frame 21 through a gear and rack pair, thereby causing the feeding supports 23 to move up and down.

[0053] In this embodiment, part of the lifting and stacking device 2 is placed in the foundation. The fixed frame 20 is fixed to the pit wall of the foundation by bolts. The fixed frame 20 is equipped with a slide rail. The lifting frame 21 slides on the slide rail by a slider. Several material feeding brackets 23 are equipped with sensors for sensing plywood blanks.

[0054] When the suction cups in the feeding device 1 pick up the plywood blanks and send them to the lifting and stacking device 2, the initial position of the bottom layer of the lifting and stacking device 2 is lower than the frame in the feeding device 1, which makes it convenient for the suction cups in the feeding device 1 to pick up the plywood blanks and place them on the feeding racks 23 in the lifting and stacking device 2. Starting from the bottom layer of the lifting and stacking device 2, after the bottom layer is finished, the third motor drives the lifting and stacking device 2 to move downward. When the second feeding rack 23 descends to a position lower than the feeding frame of the feeding device 1, the lifting and stacking device 2 stops running and begins to convey the plywood blanks to the second layer, until the multiple feeding racks 23 of the lifting and stacking device 2 are filled with plywood blanks.

[0055] Example 4, in this example, as Figures 7-8As shown, the transfer conveyor assembly 3 includes a movable plate 31, a square frame 33, two transverse supports 34, and a positioning and clamping pusher device 36. Rolling wheels are provided below the movable plate 31, and a movable base plate 32 is fixed above the movable plate 31. The square frame 33 is fixed above the movable base plate 32. Several transverse supports 34 are respectively provided on opposite sides of the square frame 33, and several guide wheels 35 are provided on the transverse supports 34. A positioning and clamping pusher device 36 is provided on either the front or rear side of the square frame 33, sliding back and forth inside the square frame 33. The positioning and clamping pusher device 36 is slidably connected to the movable base plate 32. Specifically, the upper surface of the movable base plate 32 is provided with… The device includes a slide rail, on which the positioning and clamping pusher device 36 slides. The positioning and clamping pusher device 36 comprises multiple fixing pins 361, a fixing pin mounting plate 362, and a fixing clamping cylinder 363. The multiple fixing pins 361 are fixedly connected to the fixing pin mounting plate 362, which is slidably connected to a fixing pin mounting seat. Multiple layers of clamping plates are fixedly connected to the fixing pin mounting seat, including an upper clamping plate and a lower clamping plate. The multiple fixing pins 361 pass through the upper clamping plate and are slidably connected to it. The telescopic end of the fixing clamping cylinder 363 is fixedly connected to the top of the fixing pin mounting plate 362. When the transfer conveying assembly 3 clamps the plywood blank, the positioning and clamping pusher device 36 is pushed out along the moving plate 31 and abuts against the right side of the lifting and stacking device 2. The left side of the lifting and stacking device 2 is a solid plate 211, which acts as a limit when the positioning and clamping pusher device 36 clamps the plywood blank. Each of the multi-layered clamping plates is equipped with a sensor three-sensor plywood blank. After the clamping plate picks up the plywood blank, the telescopic end of the clamping cylinder 363 extends, driving the fixing pin mounting plate 362 downward, so that the fixing pin 361 abuts against the upper surface of the plywood blank, fixing the blank. At this time, multiple plywood blanks can be moved along the guide wheel 35 to the transfer conveyor assembly 3.

[0056] When the transfer conveyor assembly 3 is filled with plywood blanks, the transfer conveyor assembly 3 moves to one side of the hot press 5. In this embodiment, a long slide rail is provided on one side of the hot press 5, and the rolling wheels of the transfer conveyor assembly 3 roll on the long slide rail to reduce the friction between them. When the transfer conveyor assembly 3 moves to one side of either hot press 5, the telescopic end of the fixed clamping cylinder 363 in the positioning clamping pusher device 36 retracts, and the fixing pin 361 loosens its fixation on the plywood blank. At this time, the positioning clamping pusher motor in the positioning clamping pusher device 36 rotates, and drives the positioning clamping pusher device 36 forward through the sprocket, pushing all the plywood blanks into the hot press 5. When the plywood blanks are removed from the transfer conveyor assembly 3, the plywood blanks slide out along the guide wheel 2 35. The guide wheel 2 35 increases the smoothness of the plywood blanks being removed.

[0057] Example 5: To facilitate smoother conveying of plywood blanks from the transfer conveyor assembly 3 to the hot press 5, a plywood guide frame 4 is fixedly connected to the hot press body, such as... Figure 9 As shown, the plywood guide frame 4 includes a concave frame 40, guide supports 41, and guide wheels 42. Several guide supports 41 are respectively arranged on opposite sides of the concave frame 40, and several guide wheels 42 are arranged on the guide supports 41. The distance between adjacent feeding supports 23 in the longitudinal direction is equal to the distance between adjacent guide supports 41 in the longitudinal direction. That is to say, when the transfer conveying assembly 3 contacts the lifting and stacking device 2, the plywood blank can smoothly transition from the feeding support 23 to the guide support 41.

[0058] The hot press 5 is existing technology. In this embodiment, there are three identical hot presses 5, placed in the foundation, namely the first hot press, the second hot press, and the third hot press. The height between the two heating layers in the hot press 5 and the height between adjacent guide supports 41 in the longitudinal direction are equal. This facilitates the transport of plywood blanks from the transfer and conveying assembly 3 to the hot press 5 along the guide wheels 42. It is understood that the plywood blanks can be smoothly moved from the transfer and conveying assembly 3 to the hot press 5.

[0059] Inside the hot press 5, guide components are staggered between the edges of adjacent heating plates. Each guide component includes a guide rod and a guide fixing block. The guide fixing block is fixed to the edge of the heating plate, and the guide rod passes through the guide fixing block and is slidably connected to it. When the hot press 5 is pressing, the heating plates in the hot press 5 are heated first, and then the plywood blank is placed on each layer of the heating plate in the hot press 5. The movable beam on the hot press 5 presses downward, and the guide rod plays a guiding and limiting role. The downward movement of the movable beam will cause each layer of heating plates to overlap downward, so as to hot press the plywood blank in each layer of heating plates. After pressing, the movable beam moves upward, and each layer of heating plates will be driven upward back to the initial position.

[0060] The number of heating layers in the hot press 5 and the number of transverse support 34 in the transfer and conveying assembly 3 are the same. Of course, the specific number of layers can be adjusted according to the actual situation.

[0061] After the hot press 5 has finished pressing, the plywood product can be removed using the unloading mechanism 6. To facilitate smoother removal of the plywood product, a similar plywood guide frame 4 is installed on the side of the hot press 5 near the unloading mechanism 6. The unloading mechanism 6 has the same structure and working principle as the transfer conveyor assembly 3. The plywood product is clamped by the clamping plates in the unloading mechanism 6 and conveyed to the unloading mechanism 6. A long slide rail 2 is installed on the side of the hot press 5 near the unloading mechanism 6, and the unloading mechanism 6 slides back and forth along the long slide rail 2. Alternatively, the same transfer conveyor assembly 3 can be used to remove the plywood product, depending on the actual site conditions. The unloading mechanism 6 places the plywood product in the finished product stacking area.

[0062] like Figures 1-2 As shown, in order to detect defects in finished plywood products, repair those defects, and have a thorough understanding of the entire detection and repair process to better optimize the quality of finished plywood products, a finished plywood product detection and repair system has been set up. This system includes a data acquisition module, an analysis and detection module, a defect repair module, and a data processing and feedback module. The data acquisition module acquires images of finished plywood products, the analysis and detection module analyzes the defects in the images, the defect repair module repairs the defects, and the data processing and feedback module records and analyzes the data from the detection and repair process.

[0063] The data acquisition module is located above the finished product conveyor line 71. The data acquisition module includes multiple vision sensors, the analysis and detection module includes a deep learning model, and the defect repair module includes a robotic arm repair device and a robotic arm path planning module.

[0064] The data acquisition module employs a high-resolution vision sensor, equipped with a suitable lens and light source, to ensure clear capture of the surface image of the finished plywood product. The frame rate and resolution of the vision sensor can be selected according to the requirements of production speed and defect detection accuracy. In another embodiment, ultrasonic technology can also be used for detection, specifically the pulse method, which measures reflected waves by sending and receiving sound pulses using the same probe; or the transmission method, which measures transmitted waves by measuring the thickness of the plywood blank, requiring a transmitter probe on one side and a receiver probe on the other to send and receive acoustic energy. Typically, this detection information is converted into digital information and displayed on a screen using software.

[0065] The acquired image data is transmitted to the analysis and detection module via high-speed data transmission interfaces such as Vision and USB 3.0.

[0066] The analysis and detection module analyzes and detects the images transmitted from the data acquisition module. First, it preprocesses the images, converting color images to grayscale images for subsequent processing and analysis. Then, it converts the grayscale images to binary images to facilitate the identification and calculation of defect areas. Binarization can be achieved by setting a threshold value; pixels with grayscale values ​​higher than the threshold are set to 1, and pixels with grayscale values ​​lower than the threshold are set to 0.

[0067] After image processing, the deep learning model in the analysis and detection module further analyzes the processed image. Through the convolutional neural network within the deep learning model, it identifies defects in the finished plywood product. The deep learning model is pre-trained with a large amount of labeled data on various defects in finished plywood products to enable it to recognize different types of defects. During the detection and analysis process, the module outputs information such as the location, size, and type of the defects.

[0068] The defect repair module includes a robot path planning module and a robot repair device. The robot path planning module first receives defect data from the analysis and detection module, including information such as the defect's location, type, and size. It then calculates the repair time, determining the time required to repair a single defect based on its size and repair speed. Finally, it generates a repair path based on the defect data and the robot's motion constraints.

[0069] The robotic repair device comprises multiple joints and links, enabling multi-degree-of-freedom movement to adapt to the repair needs of defects in different locations and shapes. The robotic arm can spray material identical to that of the plywood blank to repair defects in the finished plywood product.

[0070] Finally, the data processing and feedback module generates reports on detailed data from the inspection and repair processes. The data includes finished plywood image data, defect information, repair parameters, repair material usage, repair time, and repair effect evaluation results. These reports provide real-time feedback to relevant personnel so that they can understand the production status in a timely manner and make corresponding decisions.

[0071] A process flow, including an automated production line for plywood hot pressing as described above, includes the following steps:

[0072] S1. The feeding device 1 transports the plywood blanks to the lifting and stacking device 2;

[0073] S2, the transfer conveyor assembly 3 conveys the plywood blanks from the lifting and stacking device 2 to the hot press 5;

[0074] S3, Hot press 5 begins hot pressing;

[0075] S4. Plywood finished product conveying;

[0076] S5. Inspection and repair of finished plywood products;

[0077] S2 also includes:

[0078] S21. During the conveying process of the transfer conveyor assembly 3, a set of plywood blanks is first conveyed to the first hot press 5 for hot pressing. The feeding device 1 continues to return to the lifting and stacking device 2 to continue conveying the plywood blanks. The plywood blanks are then conveyed to the second hot press 5. The transfer conveyor assembly 3 repeats the action of conveying plywood until all the hot presses 5 have plywood blanks to be pressed.

[0079] S4 also includes:

[0080] The unloading mechanism 6 pulls the finished plywood from the three hot presses 5 and transports them to the finished product stacking area. Then, the robotic arm grabs the finished plywood and puts it onto the finished product conveyor line 71 for inspection.

[0081] S5 also includes:

[0082] S51: The data acquisition module acquires images of finished plywood products and transmits the image information to the model detection module;

[0083] S52: The analysis and detection module analyzes the acquired images and identifies the locations of defects such as cracks and holes;

[0084] S53: The robotic repair device in the repair module repairs the identified defects;

[0085] In S52 as described:

[0086] The formula for the area of ​​the identified defects by the analysis and detection module can be expressed as follows: ,

[0087] Where A is the defect area, I(i,j) is the number of pixels, i,j are the binarized values, n is the height of the image, and m is the width of the image.

[0088] (i, j) = 1 indicates that the pixel at position (i, j) is a defect;

[0089] (i, j) = 0 indicates that the pixel at position (i, j) is not defective.

[0090] In this embodiment, we assume we have a simple binarized image with a size of 3×3 pixels, as shown below:

[0091] ,

[0092] Given that the image width m=3 and height n=3, we can see that there are 5 pixels with a value of 1 (indicating a defect) and 4 pixels with a value of 0 (indicating no defect).

[0093] To calculate the defect area A, substitute the value into the formula. ,

[0094] Therefore, the defect area A is 5 pixels.

[0095] If it is necessary to convert the defect area into the actual physical area A actual ,but: ,

[0096] in, The physical size of a single pixel in the horizontal direction (unit: m / pixel);

[0097] The physical size of a single pixel in the vertical direction (unit: m / pixel).

[0098] The robotic arm repair device repairs a physical area A. actual The formula for calculating the repair time T can be expressed as: ;

[0099] Where t1 represents the time it takes for the robotic arm to move, and the formula for calculating t1 can be expressed as: Where d is the distance between defects, and V max 'a' represents the maximum speed, and 'a' represents the acceleration of the robotic arm.

[0100] Where R represents the coating rate, in m² / s;

[0101] t3 indicates the curing time of the adhesive;

[0102] This refers to the buffer time, specifically the extra time margin reserved when the robotic arm repairs defects.

[0103] Suppose we have the following parameters:

[0104] Maximum speed of the robotic arm: V max =1m / s;

[0105] Distance between defects: d = 0.6m;

[0106] The acceleration of the robotic arm is: a = 2 m / s²;

[0107] Physical area A actual =0.02 / m²;

[0108] The adhesive application rate R = 0.005 m² / s;

[0109] The curing time is t3 = 30s;

[0110] Buffer time: =0.5s;

[0111] Substitute the specific values ​​into the formula:

[0112] ,

[0113] ,

[0114] The physical area A repaired by the robotic arm repair device can then be calculated. actual The repair time T is: T = 1.6s + 4s + 30s + 0.5s = 36.1s.

[0115] The calculated data is of great significance to the entire production line. It can optimize the production cycle time. By calculating the time required for the robotic arm to repair defects, the working cycle of the robotic arm can be rationally arranged to coordinate with other equipment on the production line, such as the finished product conveyor 71 and the hot press 5. This avoids production bottlenecks caused by the robotic arm's movement speed being too fast or too slow, thereby improving the overall production line efficiency and reducing waiting time. Accurately calculating the time for the robotic arm to repair defects can prevent the robotic arm from waiting for the next defect to arrive after completing the repair of one defect, or from stopping during the repair process due to speed mismatch, reducing the production line's idle time and waiting time, and improving equipment utilization.

[0116] Working principle: First, the semi-finished plywood blank coated with glue is placed in the feeding device 1. The automatic control system is started, and the feeding control system controls the suction cup assembly 10 to adsorb the plywood blank into the lifting and stacking device 2. The lifting and stacking control system controls the lifting frame 21 to rise and fall. Then, the transfer conveying control system controls the transfer conveying assembly 3 to transport the multi-layer plywood blank to the hot press 5 for hot pressing. Then, the unloading mechanism 6 takes out the pressed plywood finished product and places it in the finished product stacking area. The plywood finished product can be clamped onto the finished product conveying line 71 by a robotic arm. The finished product inspection and repair system inspects and repairs the plywood finished product.

[0117] The automated production line for the hot pressing process of plywood adopts a fully automated workflow, which improves production efficiency and product quality, and reduces labor costs and material waste.

[0118] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. An automated production line for plywood hot pressing, comprising a feeding device (1), a lifting and stacking device (2), a transfer conveyor assembly (3), a plywood guide frame (4), multiple hot presses (5), an unloading mechanism (6), and a finished product inspection and repair device (7), characterized in that: The feeding device (1), the lifting and stacking device (2), and the multiple hot presses (5) are arranged in sequence. The feeding device (1) and the lifting and stacking device (2) are arranged adjacent to each other. The transfer conveying component (3) moves back and forth between the lifting and stacking device (2) and the multiple hot presses (5). The unloading mechanism (6) moves back and forth between the multiple hot presses (5) and the finished product stacking area. Plywood guide frames (4) are respectively arranged on both sides of the multiple hot presses (5). The plywood guide frames (4) include guide brackets (41). The feeding device (1) is used to transport plywood blanks to the lifting and stacking device (2), the transfer conveying assembly (3) is used to transport the plywood blanks in the lifting and stacking device (2) to multiple hot presses (5), and the unloading mechanism (6) is used to transport the pressed finished products to the finished product stacking area. The finished product inspection and repair device (7) is located on one side of the finished product stacking area. The finished product inspection and repair device (7) includes a finished product conveying line (71) and an automated control system. The automated control system includes a feeding control system, a lifting and palletizing control system, a transfer conveying control system, a hot press control system, an unloading control system, a robotic arm control system, and a finished product inspection and repair system.

2. The automated production line for the hot pressing process of plywood according to claim 1, characterized in that: The feeding device (1) includes a feeding frame, on which a suction cup assembly (10) is slidably arranged. The suction cup assembly (10) includes a pair of crossbeams (11) spanning the feeding frame. The pair of crossbeams (11) drive the entire suction cup assembly (10) to slide on the feeding frame. A suction cup frame mounting plate (12) is slidably arranged on the pair of crossbeams (11). A long guide rail mounting plate (14) that slides up and down is passed through the suction cup frame mounting plate (12). A suction cup frame (15) is fixedly connected to the bottom of the long guide rail mounting plate (14). Multiple suction cups are arranged below the suction cup frame (15).

3. The automated production line for the hot pressing process of plywood according to claim 1, characterized in that: The lifting and palletizing device (2) includes a fixed frame (20) and a lifting frame (21). The lifting frame (21) is slidably connected to the fixed frame (20). The lifting frame (21) is provided with a number of horizontal supports (22) on the side near the fixed frame (20). A number of feeding supports (23) are respectively provided on the horizontal supports (22). The feeding supports (23) are perpendicular to the horizontal supports (22). The feeding supports (23) are respectively provided with stops at both ends.

4. The automated production line for the hot pressing process of plywood according to claim 3, characterized in that: One side of the lifting frame (21) is a solid plate (211).

5. An automated production line for the hot pressing process of plywood according to claim 1, characterized in that: The plywood guide frame (4) is connected to the body of the hot press (5). The plywood guide frame (4) includes a concave frame (40), guide brackets (41) and guide wheels (42). Several guide brackets (41) are respectively provided on the left and right sides of the concave frame (40), and several guide wheels (42) are provided on the several guide brackets (41).

6. An automated production line for the hot pressing process of plywood according to claim 3, characterized in that: The spacing between adjacent feeding brackets (23) in the longitudinal direction is equal to the spacing between adjacent guide brackets (41) in the longitudinal direction.

7. The automated production line for the hot pressing process of plywood according to claim 1, characterized in that: The finished product inspection and repair system includes a data acquisition module, an analysis and inspection module, a defect repair module, and a data processing and feedback module. The data acquisition module is used to acquire images of the finished product, the analysis and inspection module is used to analyze defects in the finished product images, the defect repair module is used to repair defects in the finished product, and the data processing and feedback module records and analyzes the data during the inspection and repair process.

8. An automated production line for the hot pressing process of plywood according to claim 7, characterized in that: The data acquisition module is located above the finished product conveyor line. The data acquisition module includes multiple vision sensors. The analysis and detection module includes a deep learning model. The defect repair module includes a robotic arm repair device and a robotic arm path planning module.

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