Defect detection device for high-density fiberboard

Abstract

This utility model relates to the field of high-density fiberboard (HDF) inspection technology, specifically to an HDF defect inspection device. It includes a machine tool with a flipping mechanism in its center. The flipping mechanism comprises two fixed frames, with a rotating shaft rotatably mounted in the center of each frame. Limiting guide grooves are provided at both ends of the rotating shaft's center. Turntables are slidably engaged at both ends of the rotating shaft's center. Multiple slots are evenly distributed around the center of each of the two turntables, and a sleeve is fixedly installed at one end of each turntable's center. This utility model allows for flexible adjustment of the turntable spacing through the meshing transmission of a handwheel, gears, and gear plates, adapting to HDF boards of different widths. Simultaneously, the multiple slots on the turntables, combined with their rotation, enable automatic flipping of the HDF boards, completing the inspection process for both sides of the HDF board in one operation, significantly improving inspection efficiency.

Description

Technical Field

[0001] This utility model relates to the field of high-density fiberboard (HDF) testing technology, specifically to a high-density fiberboard defect detection device. Background Technology

[0002] High-density fiberboard (HDF) is a type of engineered wood product made from wood fibers or other plant fibers, bonded with urea-formaldehyde resin or other synthetic resins, and pressed under heat and pressure. Before HDF leaves the factory and enters the sales process, it is usually inspected for defects using appropriate defect detection devices to prevent defective boards from entering the market and thus ensure product quality.

[0003] Traditional board defect detection devices can only inspect one side of the board at a time. When inspecting the other side, it is necessary to flip the board over manually or with the assistance of machinery for a second inspection. This not only increases the labor intensity of manual labor, but also causes the inspection process to be interrupted, making it impossible to achieve continuous operation of two-sided inspection, which greatly reduces the overall inspection efficiency and has certain shortcomings. Utility Model Content

[0004] The purpose of this invention is to provide a high-density fiberboard defect detection device to solve the problems mentioned in the background art.

[0005] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is as follows:

[0006] A high-density fiberboard defect detection device includes a machine tool. The machine tool has a tilting mechanism in its center. The tilting mechanism includes two fixed frames. A rotating shaft is rotatably mounted in the center of the two fixed frames. Limiting guide grooves are provided at both ends of the rotating shaft. Turntables are slidably engaged at both ends of the rotating shaft. Multiple slots are evenly distributed around the center of the two turntables. A sleeve is fixedly mounted at one end of the center of each of the two turntables. Slider blocks are fixedly mounted on both sides of the center of each sleeve. A toothed plate is fixedly mounted at one end of one of the two sets of sliders. An outer fixing tube is fixedly mounted on the outer side of the limiting guide groove. A transmission rod is rotatably mounted in the center of the outer fixing tube. Gears are fixedly mounted at both ends of the center of the transmission rod. One end of the transmission rod passes through the outer fixing tube and is fixedly mounted with a handwheel.

[0007] In some embodiments, conveyor belts are provided on both sides above the middle of the machine tool, and adjustment spaces are provided at both ends of the middle of the machine tool, with the turntable of the flipping mechanism located in the middle of the respective adjustment spaces.

[0008] In some embodiments, a U-shaped frame is fixedly installed above both ends of the machine tool, and a guide groove is opened in the middle of both U-shaped frames, and a guide rod is fixedly installed in the middle of both guide grooves.

[0009] In some embodiments, a linear motor is slidably engaged in the middle of each of the two guide grooves, and the two linear motors are respectively slidably engaged in the surface of the guide rod, with a bracket fixedly installed at the lower end of each linear motor.

[0010] In some embodiments, an electric push rod is fixedly installed on one side of the upper end of the bracket, and a guide rod is slidably engaged on the other side of the upper end of the bracket. The output end of the electric push rod passes through the bracket and is fixedly connected to a fixing plate. The other end of the guide rod is fixedly connected to one side of the fixing plate. An ultrasonic testing device is fixedly installed on one side of the lower end of the fixing plate, and a visual inspection device is fixedly installed on the other side of the lower end of the fixing plate.

[0011] In some embodiments, the mounting brackets are located at both ends of the middle part of the machine tool, and a motor is fixedly installed on one side of one of the mounting brackets, with the output end of the motor passing through the mounting bracket and one end of the rotating shaft.

[0012] In some embodiments, the surfaces of the plurality of slots are covered with protective pads, and a limit pin is threaded to one side of the handwheel, with one end of the limit pin abutting against the surface of the outer fixing tube.

[0013] In some embodiments, the sleeve is slidably engaged by the sliding guide groove on the surface of the slider and the rotating shaft. The toothed plates of the two sleeves are located in opposite directions inside them. The toothed plates are slidably engaged in the middle of the limiting guide groove, and the two gears mesh with the corresponding toothed plates respectively.

[0014] This utility model has at least the following beneficial effects:

[0015] 1. This utility model is highly adaptable and compatible with various specifications of boards. Through the meshing transmission of handwheels, gears, and toothed plates, the turntable spacing can be flexibly adjusted to accommodate high-density fiberboard of different widths. Simultaneously, the multiple slots on the turntable, combined with its own rotation, enable automatic flipping of the high-density fiberboard, allowing for the completion of the inspection process on both sides of the high-density fiberboard in one pass, significantly improving inspection efficiency.

[0016] 2. When using this utility model, during inspection, the lateral movement of the linear motor and the lifting and lowering adjustment of the electric push rod, combined with the stabilizing structure of the guide rod, can achieve precise alignment of the inspection components, meeting the inspection needs of plates of different thicknesses and sizes. There is no need to replace special equipment or accessories. By working synchronously with the ultrasonic inspection device and the visual inspection device, a comprehensive inspection of the surface and internal defects of the plate can be completed in one go, avoiding missed inspections and ensuring inspection quality. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the appearance and structure of this utility model;

[0018] Figure 2 This is a three-dimensional structural diagram of the machine tool according to this utility model;

[0019] Figure 3 This is a schematic diagram of the three-dimensional structure of the frame of this utility model;

[0020] Figure 4 This is a three-dimensional structural diagram of the flipping mechanism of this utility model;

[0021] Figure 5 This is a disassembled cross-sectional view of the external fixing tube of this utility model;

[0022] Figure 6 This is a schematic diagram of the three-dimensional structure of the turntable of this utility model.

[0023] In the diagram: 1. Machine tool; 11. Conveyor belt; 12. Adjustment space; 13. U-shaped frame; 14. Guide groove; 141. Guide rod; 15. Linear motor; 16. Support; 17. Electric push rod; 18. Fixing plate; 19. Guide rod; 191. Ultrasonic testing device; 192. Vision inspection equipment; 2. Tilting mechanism; 20. Turntable; 21. Fixing frame; 22. Rotating shaft; 23. Limiting guide groove; 24. External fixing tube; 25. Handwheel; 26. Limiting pin; 27. Transmission rod; 28. Gear; 30. Sleeve; 31. Slot; 32. Protective pad; 33. Slider; 34. Gear plate; 35. Motor. Detailed Implementation

[0024] 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.

[0025] Example 1: Please refer to Figure 1 - Figure 6This utility model provides a technical solution: a high-density fiberboard defect detection device, including a machine tool 1. A flipping mechanism 2 is provided in the middle of the machine tool 1. The flipping mechanism 2 includes two fixed frames 21. A rotating shaft 22 is rotatably mounted in the middle of the two fixed frames 21. Limiting guide grooves 23 are provided at both ends of the middle of the rotating shaft 22. Turntables 20 are slidably engaged at both ends of the middle of the rotating shaft 22. Multiple slots 31 are evenly provided around the middle of the two turntables 20. A sleeve 30 is fixedly mounted at one end of the middle of each of the two turntables 20. A slider 33 is fixedly mounted on both sides of the middle of each of the two sleeves 30. A toothed plate 34 is fixedly mounted at one end of one of the two sets of sliders 33. An outer fixing tube 24 is fixedly mounted on the outer side of the middle of the limiting guide groove 23. A transmission rod 27 is rotatably mounted in the middle of the outer fixing tube 24. Gears 28 are fixedly installed at both ends of the middle of the transmission rod 27. One end of the transmission rod 27 passes through the outer fixed tube 24 and is fixedly installed with a handwheel 25. The fixed brackets 21 are located at both ends of the middle of the machine tool 1. A motor 35 is fixedly installed on one side of one of the fixed brackets 21. The output end of the motor 35 passes through the fixed bracket 21 and is fixedly connected to one end of the rotating shaft 22. Protective pads 32 are pasted on the surface of multiple slots 31. A limit pin 26 is threadedly connected to one side of the handwheel 25. One end of the limit pin 26 abuts against the surface of the outer fixed tube 24. The sleeve 30 is slidably engaged by the slider 33 and the limit guide groove 23 on the surface of the rotating shaft 22. The toothed plates 34 of the two sleeves 30 are located in opposite directions inside. The toothed plates 34 are slidably engaged in the middle of the limit guide groove 23. The two gears 28 mesh with the corresponding toothed plates 34 respectively.

[0026] In this embodiment, the user can drive the two turntables 20 to move closer or further apart along the limiting guide groove 23 of the rotating shaft 22 by engaging the handwheel 25, gear 28, and toothed plate 34. This allows the user to flexibly adjust the distance between the two turntables 20 to accommodate high-density fiberboard of different widths. The handwheel 25, in conjunction with the limiting pin 26, can quickly lock the relative positions of the gear 28 and the two toothed plates 34 after adjusting the distance between the turntables 20, preventing displacement of the two turntables 20 as they rotate along the limiting guide groove 23. The engaging transmission of the gear 28 and toothed plate 34 ensures adjustment accuracy. The rotating connection between shaft 22 and fixed frame 21 ensures a smooth and wobbly flipping process. Multiple slots 31 are evenly distributed around the turntable 20. Each slot 31 can accurately correspond to and clamp a high-density fiberboard. Driven by motor 35, the motor 35 can drive the rotating shaft 22 to rotate the turntables 20 at both ends synchronously, enabling automatic flipping of the board to be tested without manual handling, which can greatly improve testing efficiency. Each slot 31 has a protective pad 32 attached to its surface, which can buffer the pressure during clamping and prevent scratches or damage to the edges of the board due to rigid contact, thus protecting the appearance quality of the board.

[0027] Example 2: Figure 1 - Figure 3 As shown, conveyor belts 11 are provided on both sides of the upper middle part of the machine tool 1, and adjustment spaces 12 are provided at both ends of the middle part of the machine tool 1. The turntables 20 of the flipping mechanism 2 are respectively located in the middle of the corresponding adjustment spaces 12. A U-shaped frame 13 is fixedly installed above both ends of the machine tool 1. A guide groove 14 is provided in the middle of the two U-shaped frames 13. A guide rod 141 is fixedly installed in the middle of the two guide grooves 14. A linear motor 15 is slidably engaged in the middle of the two guide grooves 14. The two linear motors 15 are slidably engaged in the surface of the guide rod 141. A bracket 16 is fixedly installed at the lower end of the linear motor 15.

[0028] In this embodiment, the conveyor belt 11 above the middle of the machine tool 1 can realize the automatic conveying of high-density fiberboard. In conjunction with the flipping mechanism 2 turntable 20 in the adjustment space 12, the setting of the adjustment space 12 provides the flipping mechanism 2 turntable 20 with a margin of movement, avoiding interference between the turntable 20 and the machine tool 1 body when adjusting or flipping, and further improving the flexibility of the mechanism operation. The board can directly enter the flipping station from the conveyor belt 11, which can quickly realize the transmission and flipping, adapt to the continuous detection requirements, and can detect the front and back of the board in one go, which can greatly improve the detection efficiency. The linear motor 15 slides along the guide rod 141 in the guide groove 14, which can drive the lower support 16 to flexibly adjust its position, and can realize the precise alignment of the detection component on the support 16. The sliding engagement structure between the guide rod 141 and the linear motor 15 not only restricts the movement trajectory of the linear motor 15, but also reduces the shaking during the sliding process, ensuring the accurate positioning of the detection component driven by the support 16.

[0029] Example 3: As Figure 1 - Figure 3 As shown, an electric push rod 17 is fixedly installed on one side of the upper end of the bracket 16, and a guide rod 19 is slidably engaged on the other side of the upper end of the bracket 16. The output end of the electric push rod 17 passes through the bracket 16 and is fixedly connected to a fixing plate 18. The other end of the guide rod 19 is fixedly connected to one side of the fixing plate 18. An ultrasonic testing device 191 is fixedly installed on one side of the lower end of the fixing plate 18, and a visual inspection device 192 is fixedly installed on the other side of the lower end of the fixing plate 18.

[0030] In this embodiment, an ultrasonic testing device 191 and a visual inspection device 192 are simultaneously installed at the lower end of the fixed plate 18. A single positioning operation can simultaneously detect surface scratches, color differences, and internal defects such as voids and cracks in the board material. The electric push rod 17 can drive the fixed plate 18 to move up and down, and in conjunction with the linear motor 15, it drives the lateral movement of the bracket 16, allowing for flexible adjustment of the height and horizontal position of the testing device. The sliding engagement structure between the guide rod 19 and the bracket 16 ensures smooth and unbiased movement of the fixed plate 18 during lifting, further guaranteeing accurate alignment of the testing device and adapting to the testing needs of boards of different thicknesses and sizes. Both the ultrasonic testing device 191 and the visual inspection device 192 are existing technologies and will not be described in detail here.

[0031] Working principle:

[0032] like Figure 1 - Figure 6 As shown, before use, the user rotates the handwheel 25 to rotate the transmission rod 27 inside the outer fixing tube 24, causing the gears 28 at both ends of the transmission rod 27 to rotate accordingly. The gears 28 mesh with the toothed plates 34 on the sleeve 30. Since the two sets of toothed plates 34 are arranged in opposite directions and not on the same side, they will not collide with each other and affect each other. This will drive the two turntables 20 to move closer or further apart along the limiting guide groove 23 of the rotating shaft 22, thereby flexibly adjusting the distance between the two turntables 20 to adapt to high-density fiberboards of different widths. After adjustment, tighten the limiting pin 26 on one side of the handwheel 25 so that one end abuts against the surface of the outer fixing tube 24, locking the relative position of the gears 28 and the toothed plates 34, preventing displacement when the turntables 20 rotate. The meshing structure of the gears 28 and the toothed plates 34 also ensures the adjustment accuracy.

[0033] Subsequently, the conveyor belt 11 above the middle of machine tool 1 automatically transports the high-density fiberboard to be inspected to the flipping station. Before being transported to the flipping station, the detection component at the lower end of the U-shaped frame 13 on one side will first inspect the board before flipping. After flipping, the board will be conveyed by the conveyor belt 11 and then inspected again by the detection component at the lower end of the U-shaped frame 13 at the rear. The turntable 20 of the flipping mechanism 2 is located within the adjustment space 12 of machine tool 1. The adjustment space 12 provides the turntable 20 with a margin of movement to avoid interference with the machine tool 1 body during adjustment or flipping. After the board enters the station, the slots 31 around the turntable 20 precisely correspond to and clamp the edge of the board. The protective pads 32 on the surface of the slots 31 buffer the clamping pressure and prevent scratches or damage to the edge of the board due to rigid contact, thus protecting the appearance quality of the board. During the process, the motor 35 is started simultaneously. The output end of the motor 35 drives the rotating shaft 22 to rotate. The rotational connection between the rotating shaft 22 and the fixed frame 21 ensures that the flipping process is smooth and without shaking. The rotating shaft 22 drives the turntables 20 at both ends to rotate synchronously, thereby causing the board in the slot 31 to automatically flip over. No manual handling is required to flip the board, enabling continuous detection of the front and back sides of the board and greatly improving detection efficiency.

[0034] Based on the thickness of the board material and the requirements of the inspection position, the linear motor 15 is controlled to slide along the guide rod 141 in the guide groove 14 of the U-shaped frame 13, driving the lower support 16 to adjust its lateral position. Simultaneously, the electric push rod 17 on the support 16 is activated, driving the fixed plate 18 to rise and fall, adjusting the height of the inspection device. The sliding engagement structure between the guide rod 19 and the support 16 ensures smooth and unbiased movement of the fixed plate 18 during lifting, and, in conjunction with the lateral movement of the linear motor 15, achieves precise alignment of the inspection components, adapting to the inspection needs of boards of different thicknesses and sizes. The ultrasonic inspection device 191 and the visual inspection device 192 at the lower end of the fixed plate 18 work synchronously, completing a comprehensive inspection of the board material with a single positioning. The visual inspection device 192 identifies surface defects such as scratches and color differences, while the ultrasonic inspection device 191 detects internal defects such as voids and cracks, ultimately achieving efficient and comprehensive inspection of defects in high-density fiberboard.

[0035] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0036] 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 variations can be made to these embodiments without departing from the principles and spirit of the present invention.

Claims

1. A high-density fiberboard defect detection device, comprising a machine tool (1), a turnover mechanism (2) is arranged in the middle of the machine tool (1), characterized in that: The flipping mechanism (2) includes two fixed frames (21), with a rotating shaft (22) rotatably mounted in the middle of the two fixed frames (21). Limiting guide grooves (23) are provided at both ends of the middle of the rotating shaft (22). Turntables (20) are slidably engaged at both ends of the middle of the rotating shaft (22). Multiple slots (31) are evenly distributed around the middle of the two turntables (20). A sleeve (30) is fixedly mounted at one end of the middle of each of the two turntables (20). The middle of the two sleeves (30)... Both sides are fixedly installed with sliders (33), and one end of one of the sliders (33) is fixedly installed with a toothed plate (34). An outer fixing tube (24) is fixedly installed on the outer side of the middle part of the limiting guide groove (23). A transmission rod (27) is rotatably installed in the middle part of the outer fixing tube (24). Gears (28) are fixedly installed at both ends of the middle part of the transmission rod (27). One end of the transmission rod (27) passes through the outer fixing tube (24) and is fixedly installed with a handwheel (25).

2. The high-density fiberboard defect detection apparatus according to claim 1, characterized in that: The machine tool (1) has conveyor belts (11) on both sides above the middle section, and adjustment spaces (12) are opened at both ends of the middle section of the machine tool (1). The turntable (20) of the flipping mechanism (2) is located in the middle of the corresponding adjustment space (12).

3. The high-density fiberboard defect detection device according to claim 2, characterized in that: A U-shaped frame (13) is fixedly installed above both ends of the machine tool (1). A guide groove (14) is opened in the middle of the two U-shaped frames (13), and a guide rod (141) is fixedly installed in the middle of the two guide grooves (14).

4. The high-density fiberboard defect detection device according to claim 3, characterized in that: A linear motor (15) is slidably engaged in the middle of each of the two guide grooves (14), and the two linear motors (15) are respectively slidably engaged in the surface of the guide rod (141). A bracket (16) is fixedly installed at the lower end of the linear motor (15).

5. The high-density fiberboard defect detection device according to claim 4, characterized in that: An electric push rod (17) is fixedly installed on one side of the upper end of the bracket (16), and a guide rod (19) is slidably engaged on the other side of the upper end of the bracket (16). The output end of the electric push rod (17) passes through the bracket (16) and is fixedly connected to a fixing plate (18). The other end of the guide rod (19) is fixedly connected to one side of the fixing plate (18). An ultrasonic testing device (191) is fixedly installed on one side of the lower end of the fixing plate (18), and a visual inspection device (192) is fixedly installed on the other side of the lower end of the fixing plate (18).

6. The high-density fiberboard defect detection device according to claim 1, characterized in that: The fixed frame (21) is located at both ends of the middle part of the machine tool (1). A motor (35) is fixedly installed on one side of one of the fixed frames (21). The output end of the motor (35) passes through the fixed frame (21) and is fixedly connected to one end of the rotating shaft (22).

7. The high-density fiberboard defect detection device according to claim 1, characterized in that: The surfaces of the multiple slots (31) are covered with protective pads (32), and a limit pin (26) is threaded to one side of the handwheel (25), with one end of the limit pin (26) abutting against the surface of the outer fixing tube (24).

8. The high-density fiberboard defect detection device according to claim 1, characterized in that: The sleeve (30) is slidably engaged by the sliding guide groove (23) on the surface of the slider (33) and the rotating shaft (22). The toothed plates (34) of the two sleeves (30) are located in opposite directions inside. The toothed plates (34) are slidably engaged in the middle of the limiting guide groove (23). The two gears (28) mesh with the corresponding toothed plates (34) respectively.

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