A device for detecting surface defects of a plywood

Abstract

This utility model relates to the field of plywood production technology, specifically to a plywood surface defect detection device, including a support frame. A frame is fixedly connected to the top of the support frame, and a conveyor belt is rotatably connected inside the frame. A detection table is fixedly connected to the middle of the outside of the frame, and the conveyor belt extends to the outside of the detection table. A fixing frame is fixedly connected to the outside of the support frame, and a first fixing strip and a second fixing strip are fixedly connected to the top of the fixing frame. A receiving plate is fixedly connected to the outside of the first fixing strip and the second fixing strip. A through groove is opened inside the receiving plate, and placement strips are fixedly connected to the four corners of the top of the receiving plate. The placement strips are designed in an L-shape. Compared with existing plywood surface defect detection devices, this utility model, through the design of positioning columns and through grooves, can quickly complete the automatic unloading of plywood, greatly improving the overall practicality.

Description

Technical Field

[0001] This utility model relates to the field of plywood production technology, and specifically to a plywood surface defect detection device. Background Technology

[0002] Plywood is a sheet material made of three or more layers of wood, which are rotary-cut into veneers or sliced ​​into thin sheets and then glued together with adhesive. It usually uses an odd number of veneer layers, with the fiber directions of adjacent veneers perpendicular to each other. It is a type of engineered wood product with a series of advantages due to its unique structure and manufacturing process. Because plywood is made of multiple layers of veneers stacked crosswise with the fiber directions of adjacent layers perpendicular to each other, it has high strength and stability and is not easily deformed or cracked. When selling, it is necessary to use inspection machines to check the surface of the plywood for defects.

[0003] In traditional technology, a set of conveying mechanisms is set up, and a probe is installed on the top of the conveying mechanism. The plywood is placed on the surface of the conveying mechanism, and a signal is emitted when it passes the probe, thereby achieving the purpose of detection. However, in actual use, the detection efficiency is greatly reduced by manually handling the plywood.

[0004] Therefore, it is particularly important to improve existing plywood surface defect detection devices and design a new type of plywood surface defect detection device to solve the above-mentioned technical defects and improve the overall practicality of plywood surface defect detection devices. Utility Model Content

[0005] The purpose of this invention is to provide a plywood surface defect detection device. Through the overall design, the positioning column is controlled to slide inside the through groove, which then pushes the plywood and finally completes automatic unloading through the unloading plate, thereby solving the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution:

[0007] A plywood surface defect detection device includes a support frame, a frame fixedly connected to the top of the support frame, a conveyor belt rotatably connected inside the frame, a detection table fixedly connected to the middle of the outside of the frame, the conveyor belt extending to the outside of the detection table, a fixing frame fixedly connected to the outside of the support frame, a first fixing strip and a second fixing strip fixedly connected to the top of the fixing frame, a receiving plate fixedly connected to the outside of the first fixing strip and the second fixing strip, and a through groove opened inside the receiving plate.

[0008] As a preferred embodiment of this utility model, each of the four corners of the top of the receiving plate is fixedly connected with a placement strip. The placement strip has an L-shaped structure design. A partition is fixedly connected between the first fixing strip and the second fixing strip. A limit rod is fixedly connected inside the partition.

[0009] As a preferred embodiment of this utility model, the limiting rod is slidably connected to a movable sleeve, the bottom of the movable sleeve is fixedly connected to a fixed rod, and the fixed rod is slidably connected to a sliding table.

[0010] As a preferred embodiment of this utility model, an extension plate is fixedly connected to the top of the sliding table, and a positioning post is fixedly connected to the top of the extension plate. The external size of the positioning post is smaller than the external structural size of the through groove.

[0011] As a preferred embodiment of this utility model, a guide block is rotatably connected to the end of the sliding table away from the extension plate, a linkage rod is fixedly connected to the top of the guide block, and a pressing block is slidably connected to the outside of the linkage rod.

[0012] As a preferred embodiment of this utility model, a spring is sleeved between the extrusion block and the guide block and outside the linkage rod. A lead screw is rotatably connected inside the first fixing bar, and a moving block is threadedly connected to the outside of the lead screw. A vertical rod is fixedly connected inside the second fixing bar, and a sliding block is slidably connected to the outside of the vertical rod. A first extrusion roller is rotatably connected between the sliding block and the moving block.

[0013] As a preferred embodiment of this utility model, a second extrusion roller is rotatably connected between the first fixing strip and the second fixing strip and located below the first extrusion roller. A feeding plate is fixedly connected to one end of the fixing frame away from the receiving plate, and the feeding plate has an inclined surface structure design.

[0014] Compared with the prior art, the beneficial effects of this utility model are:

[0015] In this invention, the linkage rod slides inside the extrusion block and exerts a pulling force on the guide block. The guide block then transmits the pulling force to the outside of the sliding table, which slides outside the fixed rod. Subsequently, the positioning post is positioned outside the through groove, and the linkage rod drives the sliding table to move in a rectangular trajectory. As a result, the positioning post contacts one side of the plywood and exerts a pushing force on the plywood, causing it to fall onto the surface of the unloading plate. The inclined design guides the plywood into the surface of the conveyor belt, completing the automatic unloading. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0017] Figure 2 This is a schematic diagram of the receiving plate structure of this utility model;

[0018] Figure 3 This is a schematic diagram of the connecting frame structure of this utility model;

[0019] Figure 4 This is a schematic diagram of the limiting rod structure of this utility model.

[0020] In the diagram: 1. Support frame; 2. Frame; 3. Conveyor belt; 4. Inspection table; 5. Fixing frame; 6. First fixing strip; 7. Second fixing strip; 8. Receiving plate; 9. Through groove; 10. Placement strip; 11. Partition plate; 12. Limiting rod; 13. Moving sleeve; 14. Fixing rod; 15. Sliding table; 16. Extension plate; 17. Positioning column; 18. Guide block; 19. Linkage rod; 20. Extrusion block; 21. Spring; 22. Lead screw; 23. Vertical rod; 24. First extrusion roller; 25. Second extrusion roller; 26. Feed plate. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the protection scope of the present utility model.

[0022] Example: Please refer to Figures 1-4 This utility model provides a technical solution:

[0023] A plywood surface defect detection device includes a support frame 1, a frame 2 fixedly connected to the top of the support frame 1, a conveyor belt 3 rotatably connected inside the frame 2, a detection table 4 fixedly connected to the middle of the outside of the frame 2, the conveyor belt 3 extending to the outside of the detection table 4, a fixing frame 5 fixedly connected to the outside of the support frame 1, a first fixing bar 6 and a second fixing bar 7 fixedly connected to the top of the fixing frame 5 respectively, and a receiving plate 8 fixedly connected to the outside of the first fixing bar 6 and the second fixing bar 7. The receiving plate 8 has a through groove 9 inside. By placing the support frame 1 in a designated position, the conveyor belt 3 is driven by a motor to achieve cyclic rotation inside the frame 2. Plywood is then placed on the surface of the conveyor belt 3 and enters the detection table 4. The detection table 4 completes the monitoring of plywood surface defects. Then, more plywood to be tested is placed on the top of the receiving plate 8.

[0024] Furthermore, in this embodiment, placement strips 10 are fixedly connected to the four corners of the top of the receiving plate 8. The placement strips 10 are designed in an L-shape. A partition 11 is fixedly connected between the first fixing strip 6 and the second fixing strip 7. A limiting rod 12 is fixedly connected inside the partition 11. The placement strips 10 wrap around the corners of the stacked plywood to make them neatly stacked. At the same time, when placing, the placement strips 10 will limit the plywood to allow it to fall freely to the top of the receiving plate 8.

[0025] Furthermore, in this embodiment, a movable sleeve 13 is slidably connected to the outside of the limiting rod 12, a fixed rod 14 is fixedly connected to the bottom of the movable sleeve 13, a sliding table 15 is slidably connected to the outside of the fixed rod 14, an extension plate 16 is fixedly connected to the top of the sliding table 15, and a positioning post 17 is fixedly connected to the top of the extension plate 16. The external size of the positioning post 17 is smaller than the external structural size of the through groove 9. By sliding the sliding table 15 outside the fixed rod 14, the extension plate 16 is driven to rise synchronously. Then the positioning post 17 will be outside the through groove 9. Finally, the movable sleeve 13 is slid, and the limiting rod 12 will limit the movable sleeve 13, so that it moves along a predetermined route. Thus, the positioning post 17 contacts one side of the plywood and enters the interior of the through groove 9, thereby generating a thrust on the plywood and realizing the translational movement of the bottom plywood on the top of the receiving plate 8.

[0026] Furthermore, in this embodiment, a guide block 18 is rotatably connected to the end of the sliding table 15 away from the extension plate 16. A linkage rod 19 is fixedly connected to the top of the guide block 18. An extrusion block 20 is slidably connected to the outside of the linkage rod 19. By connecting the output end of the motor to the extrusion block 20, the extrusion block 20 is rotated. The linkage rod 19 then slides inside the extrusion block 20 and exerts a pulling force on the guide block 18. The guide block 18 then transmits the pulling force to the outside of the sliding table 15. When the extrusion block 20 rotates one revolution, the linkage rod 19 drives the sliding table 15 to perform a rectangular trajectory movement. Then, the moving sleeve 13 slides back and forth outside the limiting rod 12 to complete the pushing of the plywood.

[0027] Furthermore, in this embodiment, a spring 21 is sleeved between the extrusion block 20 and the guide block 18 and outside the linkage rod 19. A lead screw 22 is rotatably connected inside the first fixing bar 6, and a moving block is threadedly connected to the outside of the lead screw 22. A vertical rod 23 is fixedly connected inside the second fixing bar 7, and a sliding block is slidably connected to the outside of the vertical rod 23. A first extrusion roller 24 is rotatably connected between the sliding block and the moving block. A second extrusion roller 25 is rotatably connected between the first fixing bar 6 and the second fixing bar 7 and below the first extrusion roller 24. The fixing frame 5 is far from... A feeding plate 26 is fixedly connected to one end of the receiving plate 8. The feeding plate 26 has an inclined structure design. First, according to the height of the plywood, the screw 22 is rotated. At the same time, the moving block spirals down outside the screw 22. Then, the sliding block slides outside the vertical rod 23 to limit the rotational force of the moving block. This allows the first extrusion roller 24 to approach the second extrusion roller 25, thereby limiting the movement of the plywood and making it fall neatly onto the surface of the feeding plate 26. Its inclined design guides the plywood into the surface of the conveyor belt 3, completing the automatic feeding.

[0028] In this embodiment, the specific implementation scenario is as follows: more plywood to be tested is placed on top of the receiving plate 8. The corners of the stacked plywood are wrapped by the placement strip 10 to make them neatly arranged. At the same time, during placement, the placement strip 10 will limit the plywood, allowing it to descend freely to the top of the receiving plate 8. By connecting the output end of the motor to the extrusion block 20, the extrusion block 20 is rotated. Then, the linkage rod 19 slides inside the extrusion block 20 and generates a pulling force on the guide block 18. The guide block 18 then transmits the pulling force to the outside of the sliding table 15. The sliding table 15 slides outside the fixed rod 14, which then drives the extension plate 16 to rise synchronously. Then, the positioning post 17 will be outside the through groove 9. When the extrusion block 20... When the linkage rod 19 rotates once, it will drive the sliding table 15 to move in a rectangular trajectory. Then the moving sleeve 13 will slide back and forth outside the limiting rod 12, so that the positioning column 17 contacts one side of the plywood and enters the interior of the through groove 9, thereby generating a pushing force on the plywood. This will enable the bottom plywood to complete the translational movement on the top of the receiving plate 8, which will rotate the lead screw 22. At the same time, the moving block will spiral down outside the lead screw 22, and then the sliding block will slide outside the vertical rod 23 to limit the rotational force of the moving block. This will enable the first extrusion roller 24 to approach the second extrusion roller 25, thereby limiting the movement of the plywood and making it fall neatly onto the surface of the unloading plate 26. The inclined design of the plate will guide the plywood into the surface of the conveyor belt 3, completing the automatic unloading.

[0029] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A plywood surface defect detection device, comprising a support frame (1), characterized in that: The top of the support frame (1) is fixedly connected to a frame (2), and a conveyor belt (3) is rotatably connected inside the frame (2). A testing platform (4) is fixedly connected to the middle of the outside of the frame (2). The conveyor belt (3) extends to the outside of the testing platform (4). A fixing frame (5) is fixedly connected to the outside of the support frame (1). A first fixing strip (6) and a second fixing strip (7) are fixedly connected to the top of the fixing frame (5). A receiving plate (8) is fixedly connected to the outside of the first fixing strip (6) and the second fixing strip (7). A through groove (9) is opened inside the receiving plate (8).

2. The plywood surface defect detection device according to claim 1, characterized in that: Placement strips (10) are fixedly connected to the four corners of the top of the receiving plate (8). The placement strips (10) are designed in an L-shape. A partition (11) is fixedly connected between the first fixing strip (6) and the second fixing strip (7). A limit rod (12) is fixedly connected inside the partition (11).

3. The plywood surface defect detection device according to claim 2, characterized in that: The limiting rod (12) is slidably connected to a movable sleeve (13), the bottom of the movable sleeve (13) is fixedly connected to a fixed rod (14), and the fixed rod (14) is slidably connected to a sliding table (15).

4. The plywood surface defect detection device according to claim 3, characterized in that: An extension plate (16) is fixedly connected to the top of the sliding table (15), and a positioning post (17) is fixedly connected to the top of the extension plate (16). The external size of the positioning post (17) is smaller than the external structural size of the through groove (9).

5. The plywood surface defect detection device according to claim 4, characterized in that: The sliding table (15) is rotatably connected to a guide block (18) at the end away from the extension plate (16). A linkage rod (19) is fixedly connected to the top of the guide block (18), and a pressing block (20) is slidably connected to the outside of the linkage rod (19).

6. The plywood surface defect detection device according to claim 5, characterized in that: A spring (21) is sleeved between the extrusion block (20) and the guide block (18) and outside the linkage rod (19). A lead screw (22) is rotatably connected inside the first fixing bar (6). A moving block is threadedly connected to the outside of the lead screw (22). A vertical rod (23) is fixedly connected inside the second fixing bar (7). A sliding block is slidably connected to the outside of the vertical rod (23). A first extrusion roller (24) is rotatably connected between the sliding block and the moving block.

7. The plywood surface defect detection device according to claim 6, characterized in that: A second extrusion roller (25) is rotatably connected between the first fixing strip (6) and the second fixing strip (7) and located below the first extrusion roller (24). A feeding plate (26) is fixedly connected to one end of the fixing frame (5) away from the receiving plate (8). The feeding plate (26) has a sloping structure design.

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