A medium-density fiberboard sanding device

Abstract

This application relates to the field of fiberboard processing technology, and in particular to a sanding device for medium-density fiberboard (MDF), comprising: a support platform, a lateral moving mechanism, a fixing mechanism, and a sanding mechanism; the fixing mechanism is disposed on the support platform for fixing the MDF to be sanded; the lateral moving mechanism is disposed on the support platform for driving the sanding mechanism to move; the sanding mechanism includes: a support frame and two sanding components. This application can effectively improve the sanding efficiency of fiberboard.

Description

Technical Field

[0001] This application relates to the field of fiberboard processing technology, and in particular to a sanding apparatus for medium-density fiberboard processing. Background Technology

[0002] Medium-density fiberboard (MDF), a type of engineered wood product with uniform structure and excellent processing performance, is widely used in furniture manufacturing, interior decoration, and packaging materials. In the production and processing of MDF, sanding is a crucial post-processing step. Its core purpose is to eliminate unevenness, burrs, and processing marks on the board surface, ensuring thickness accuracy and surface smoothness, thus laying the foundation for subsequent coating, veneer, and other processing steps.

[0003] Currently, the traditional working process of medium-density fiberboard (MDF) sanding equipment mainly involves fixing the MDF in place and then using a sanding disc to sand the surface of the board. The sanding disc rotates at high speed and moves along the length and width of the fiberboard to sand the entire surface of the fiberboard.

[0004] The above sanding method requires rough sanding first, followed by fine sanding. Rough and fine sanding need to be done on two separate machines or different sanding discs, which reduces sanding efficiency. If only one sanding is required, a fine sanding disc must be used for repeated sanding, which also reduces sanding efficiency. Utility Model Content

[0005] In order to improve the sanding efficiency of fiberboard, this application provides a medium-density fiberboard sanding device.

[0006] This application provides a medium-density fiberboard (MDF) sanding device, which adopts the following technical solution: A medium-density fiberboard (MDF) sanding apparatus, comprising: Support platform, lateral movement mechanism, fixing mechanism, and grinding mechanism; The fixing mechanism is installed on the support platform to fix the medium-density fiberboard to be polished; The lateral moving mechanism is mounted on the support platform to drive the grinding mechanism to move. The polishing mechanism includes a support frame and two polishing components. The support frame is mounted on the support platform. The polishing components include a polishing roller, a polishing roller bracket, and a polishing motor. The polishing roller bracket is mounted on the support frame. The polishing roller is rotatably mounted on the polishing roller bracket. The polishing motor is mounted on the polishing roller bracket and is connected to the polishing roller in a driving transmission. The two grinding assemblies have different friction grit numbers for their grinding rollers.

[0007] By adopting the above technical solution, medium-density fiberboard (MDF) is placed on the support platform and fixed by a fixing mechanism. First, coarse grinding is performed. A grinding motor drives a grinding roller with a smaller friction grit to rotate at high speed. A lateral movement mechanism moves the support frame on the support platform, causing the grinding roller to contact the MDF and perform coarse grinding. Then, fine grinding is performed. Another grinding motor drives a grinding roller with a larger friction grit to rotate at high speed. A lateral movement mechanism moves the support frame on the support platform, causing the grinding roller to contact the MDF and perform fine grinding. By setting two grinding components with different friction grits, coarse and fine grinding can be completed without changing the equipment or grinding disc, improving grinding efficiency. Furthermore, the length of the grinding roller is greater than the width of the MDF, eliminating the need to move along the width of the MDF, further improving grinding efficiency.

[0008] Optionally, the grinding mechanism further includes two buffer components, each including a spring seat, the movable end of which is disposed on the support frame, and the fixed end of which is disposed on the grinding roller bracket.

[0009] By adopting the above technical solution, the impact force when the grinding roller comes into contact with the medium density fiberboard can be buffered, avoiding edge chipping and surface scratches caused by rigid contact. At the same time, it provides constant grinding pressure to ensure the surface processing accuracy and consistency of the board. On the other hand, it can absorb the instantaneous overload impact force during the grinding process, protect the grinding roller and grinding motor, and extend the service life of the equipment. In addition, the telescopic characteristics of the spring seat can be adapted to boards of different thicknesses and slight warping, improving the versatility of the equipment and the ease of operation.

[0010] Optionally, the grinding mechanism further includes an adjustment assembly, which includes an adjustment plate and an adjustment screw. The adjustment plate is slidably disposed on the support frame, the adjustment screw is threadedly connected to the support frame and its end is rotatably connected to the adjustment plate, and one end of the spring seat is disposed on the adjustment plate.

[0011] By adopting the above technical solution, rotating the adjusting screw causes the adjusting plate to slide on the support frame. The adjusting plate drives the grinding assembly to move through the spring seat, thereby causing the spring seat to compress or release, realizing the adjustment of the spring seat pre-pressure. This controls the grinding pressure of the grinding roller on the fiberboard. The grinding pressure can be flexibly adjusted according to the different process requirements of coarse grinding and fine grinding, as well as the differences in fiberboard material, surface condition, thickness specifications, etc. At the same time, it can compensate for the pressure drop caused by the wear of the grinding roller and the elastic decay of the spring seat, ensuring the stability and consistency of the grinding pressure over a long period of time. Combined with the buffering characteristics of the spring seat, it not only improves the grinding accuracy of the fiberboard surface, but also reduces the probability of processing defects such as chipping and scratches, significantly optimizing the grinding effect and the practicality of the equipment.

[0012] Optionally, the grinding mechanism further includes two pre-pressure components, which are respectively disposed at both ends of the support frame. Each pre-pressure component includes an electric push rod, a moving rod, and a pre-pressure wheel. The fixed end of the electric push rod is disposed on the support frame, the moving rod is disposed on the telescopic rod of the electric push rod, and the pre-pressure wheel is disposed on the moving rod. The electric push rod is used to drive the pre-pressure wheel to move in the vertical direction.

[0013] By adopting the above technical solution, before sanding, the electric push rod is started. The telescopic rod of the electric push rod drives the pre-pressure roller to move through the moving rod, so that the two pre-pressure rollers press against the edge positions on both sides of the surface of the medium density fiberboard. Since the edge chipping problem of medium density fiberboard is mainly concentrated on both sides of the width direction, by setting the pre-pressure component, the loose wood fibers in this area can be directly compacted, the edge structure density is enhanced, and the probability of edge chipping during sanding is reduced.

[0014] Optionally, it also includes a preload wheel position adjustment component, which includes a rotating shaft, a slider, and a bolt. The moving rod has a groove, and the slider is slidably disposed in the groove on the moving rod. The rotating shaft is rotatably connected to the slider, the preload wheel is disposed at one end of the rotating shaft, and the bolt is threadedly connected to the slider for locking and positioning the slider.

[0015] By adopting the above technical solution, the slider moves on the moving rod according to the width of the medium density fiberboard, so that the pre-compression roller is aligned with the edge position on both sides of the fiberboard surface. This not only improves the adaptability of the equipment to various specifications of boards, but also ensures that the pre-compression roller always maintains the pre-compression effect.

[0016] Optionally, the outer surface of the preload wheel is fitted with a rubber layer.

[0017] By adopting the above technical solutions, edge damage and surface scratches of the board caused by hard contact are avoided. At the same time, the relative slippage of the board is prevented by increasing the coefficient of friction, thereby improving positioning stability.

[0018] Optionally, the lateral movement mechanism includes a drive motor, a lead screw, and a positioning rod. The drive motor is disposed on one side of the support platform. One end of the lead screw is coaxially and fixedly connected to the output shaft of the drive motor. The positioning rod is slidably disposed on one side of the support platform and threadedly connected to the lead screw. The support frame is disposed on the positioning rod.

[0019] By adopting the above technical solution, the output shaft of the drive motor drives the lead screw to rotate, and the lead screw drives the positioning rod and support frame to move on the support platform to adjust the position of the grinding component. Compared with traditional electric push rods and other driving methods, the lead screw can drive the positioning rod to achieve a longer travel distance. At the same time, the lead screw transmission can still maintain high-precision positioning and stable linear motion during long-travel movement, avoiding the shaking and positioning deviation problems that are prone to occur in electric push rods due to limited travel or long travel distance. This ensures that the grinding component can fully cover the surface of large-size plates and grind without any missed areas.

[0020] Optionally, the bottom of the support platform is provided with multiple support legs, and each support leg is provided with a caster wheel at its bottom.

[0021] By adopting the above technical solution, the locking mechanism of the fuma wheel is loosened, allowing the roller of the fuma wheel to be in a rolling state. Pushing the support platform allows the entire equipment to be moved flexibly along the ground via the roller until it is adjusted to the target working position. After moving into position, the locking mechanism of the fuma wheel is tightened, and the screw of the fuma wheel is pressed downward against the ground, causing the roller to lift off the ground and the support surface to fully bear the weight of the equipment, thus achieving stable positioning of the equipment. By setting support legs and fuma wheels, the flexibility of the device can be improved.

[0022] In summary, this application includes at least one of the following beneficial technical effects: 1. By setting two grinding mechanisms with different grit numbers, the surface defects of the board are quickly removed by the low-grit coarse grinding roller, and then the surface roughness is refined by the high-grit fine grinding roller. The surface roughness is gradually optimized. Coarse and fine grinding can be completed without changing the equipment or grinding disc, which improves the grinding efficiency. At the same time, the length of the grinding roller is greater than the width of the medium density fiberboard, so there is no need to move along the width direction of the medium density fiberboard, which further improves the grinding efficiency. 2. By setting up a spring seat buffer assembly, the grinding roller and the board form a flexible contact, which can not only buffer the impact force at the moment of contact and avoid scratches and chipping caused by rigid collision, but also provide constant grinding pressure, and achieve dynamic compensation in combination with board thickness fluctuations and slight warping, ensuring the consistency of batch processing. 3. By setting up pre-compression components and position adjustment parts, the pre-compression rollers precisely press the two sides of the board edge and can be adapted to different width specifications. They compact the loose fibers at the edge to enhance the cutting resistance, while stabilizing the board's grinding posture to prevent displacement. Together with graded grinding, they form a double anti-chipping edge protection. 4. By setting up a lead screw drive lateral movement mechanism, a longer movement stroke can be achieved compared to traditional electric push rods. Even with a long stroke, high-precision positioning and smooth movement are maintained, ensuring full coverage of large-size plates without any missed grinding, thus improving processing efficiency and finished product qualification rate. Attached Figure Description

[0023] Figure 1This is a schematic diagram of the overall structure of a medium-density fiberboard sanding device according to an embodiment of this application; Figure 2 This is a schematic diagram of the pre-compression component in an embodiment of this application; Figure 3 This application Figure 2 A magnified view of a portion of point A in the middle.

[0024] Reference numerals: 100, support platform; 110, support leg; 120, caster wheel; 200, lateral movement mechanism; 210, drive motor; 220, lead screw; 230, guide rod; 240, positioning rod; 300, grinding mechanism; 310, support frame; 320, buffer assembly; 330, adjustment assembly; 331, adjustment screw; 332, adjustment plate; 333, sliding rod; 340, grinding assembly; 341, grinding motor; 342, grinding roller bracket; 343, grinding roller; 400, medium-density fiberboard; 500, fixing mechanism; 510, fixing frame; 600, pre-compression assembly; 610, electric push rod; 620, moving rod; 630, pre-compression wheel position adjustment component; 631, rotating shaft; 632, slider; 633, bolt; 640, pre-compression wheel. Detailed Implementation

[0025] This embodiment discloses a sanding device for medium-density fiberboard (MDF).

[0026] Reference Figures 1-3 A medium-density fiberboard (MDF) sanding device, comprising: Support platform 100, lateral moving mechanism 200, fixing mechanism 500 and grinding mechanism 300; The fixing mechanism 500 is set on the support platform 100 to fix the medium density fiberboard 400 to be polished. The transverse moving mechanism 200 is set on the support platform 100 to drive the polishing mechanism 300 to move. The polishing mechanism 300 is used to polish the fixed medium density fiberboard 400.

[0027] To facilitate flexible adjustment of the equipment position, four support legs 110 (preferably square or round tube structure to ensure support stability) are symmetrically fixedly installed at the bottom of the support platform 100. The bottom end of each of the four support legs 110 is equipped with a caster wheel 120, which integrates directional movement and fixed-point locking functions.

[0028] The fixing mechanism 500 includes a fixing frame 510. The fixing frame 510 model that matches the size of the medium density fiberboard 400 to be ground is selected. The fixing frame 510 has through holes for mounting bolts 633. The support platform 100 has mounting holes that match the different models of fixing frames 510. The selected fixing frame 510 is installed on the support platform 100 by bolts 633.

[0029] The lateral movement mechanism 200 includes a drive motor 210, a lead screw 220, a guide rod 230, and a positioning rod 240. The drive motor 210 is fixedly mounted on one side of the support platform 100. One end of the lead screw 220 is coaxially fixedly connected to the output shaft of the drive motor 210. Both ends of the guide rod 230 are fixedly mounted on the support platform 100. The positioning rod 240 is slidably mounted on one side of the support platform 100 through the guide rod 230 and is threadedly connected to the lead screw 220. The positioning rod 240 is fixedly mounted on the support frame 310 by welding.

[0030] Specifically, when it is necessary to adjust the position of the grinding mechanism 300, the drive motor 210 is started. The output shaft of the drive motor 210 drives the lead screw 220 to rotate. The rotation of the lead screw 220 drives the positioning rod 240 to move. The positioning rod 240 drives the support frame 310 to move, thereby driving the entire grinding mechanism 300 to move. The direction of movement of the grinding mechanism 300 is controlled by controlling the rotation direction of the output shaft of the drive motor 210.

[0031] The grinding mechanism 300 includes a support frame 310, a buffer assembly 320, an adjustment assembly 330, and two grinding assemblies 340. The support frame 310 is U-shaped and located on the upper part of the support platform 100, and is fixed to the positioning rod 240 by welding. The adjustment assembly 330 includes an adjustment plate 332, an adjustment screw 331, and two sliding rods 333. The two sliding rods 333 are fixedly installed at both ends of the support frame 310. The adjustment plate 332 is slidably connected to the U-shaped space of the support frame 310 in the vertical direction through the sliding rods 333. One end of the adjustment screw 331 is rotatably connected to the center of the adjustment plate 332, and the other end passes through the horizontal plane of the support frame 310 and is threadedly connected to the support frame 310. There are two buffer assemblies 320. Each buffer assembly 320 includes two spring seats. The movable ends of the two spring seats are fixedly installed on the adjustment plate 332, and the fixed ends of the two spring seats are connected to the corresponding grinding assembly 340, so as to provide a buffering effect on the grinding assembly 340 during grinding.

[0032] The grinding assembly 340 includes a grinding roller 343, a grinding roller support 342, and a grinding motor 341. The grinding roller support 342 is fixedly mounted on the fixed end of the spring seat. The grinding roller 343 is rotatably mounted on the grinding roller support 342. The grinding motor 341 is mounted on the grinding roller support 342 and is connected to the grinding roller 343 for transmission. The two grinding assemblies 340 have different friction grit numbers corresponding to the grinding rollers 343.

[0033] Reference Figure 2 and Figure 3To facilitate the pressing of the medium-density fiberboard 400, two pre-compression components 600 are provided on both sides of the surface. The two pre-compression components 600 are respectively located at both ends of the support frame 310, including an electric push rod 610, a moving rod 620, and a pre-compression wheel 640. The fixed end of the electric push rod 610 is fixedly mounted on the support frame 310 via a connecting block, and the moving rod 620 is fixedly mounted on the telescopic rod of the electric push rod 610. To facilitate the adjustment of the position of the pre-compression wheel 640, a pre-compression wheel position adjustment component 630 is provided. The pre-compression wheel position adjustment component 630 includes a rotating shaft 631, a slider 632, and a bolt 633. The rod 620 has a rectangular groove along its length. The slider 632 is slidably disposed in the groove on the moving rod 620. One end of the rotating shaft 631 is rotatably connected to the slider 632 via a bearing. The other end of the rotating shaft 631 passes through the groove and is fixedly connected to the middle of the side of the preload wheel 640 away from the medium density fiberboard 400. The slider 632 is threaded with a bolt 633. Tightening the bolt 633 can cause the bolt 633 to move downward and press against the moving rod 620 at the bottom of the groove, thereby locking and positioning the slider 632. The preload wheel 640 is disposed on the moving rod 620 and has a rubber layer on its outer surface.

[0034] The workflow of this embodiment is as follows: The support table 100 is moved to the target position via the wheel 120 and locked in place. A suitable fixing frame 510 is selected according to the size of the fiberboard to be processed, and it is installed on the support table 100 using bolts 633. Simultaneously, the condition of each component, such as the motor, spring seat, and lead screw 220, is checked to ensure the grinding roller 343 is clean and free from jamming. The fiberboard is placed into the fixing frame 510 and adjusted to ensure its edges are aligned with the frame. The electric push rod 610 is activated to adjust the preload roller 640 to align with the edge of the fiberboard. The position of the preload roller 640 is locked using the slider 632 and bolts 633. The adjusting screw 331 is rotated to push the adjusting plate 332, which in turn drives the grinding assembly via the spring seat. 340 is raised to the preset grinding depth. Confirm that the dual grinding rollers 343 (with different friction grits) are functioning correctly. Start the grinding motor 341 to rotate the grinding rollers 343. Then start the other grinding motor 341. Through the lead screw 220, the positioning rod 240 drives the grinding mechanism 300 to move at a uniform speed along the board for grinding. The drive motor 210 can be controlled to rotate to achieve reciprocating grinding. Spring seats are used for buffering to ensure uniform grinding. Monitor the equipment's operating status in real time. Turn off the motor to stop the grinding rollers 343, reset the mechanism, and retract the pre-pressure roller 640. Remove the board to check its quality and clean up any debris. Unlock the fuma wheel 120 or turn off the main power as needed.

[0035] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A sanding device for medium-density fiberboard (MDF), characterized in that: include: Support platform (100), lateral movement mechanism (200), fixing mechanism (500) and grinding mechanism (300); The fixing mechanism (500) is set on the support platform (100) for fixing the medium density fiberboard (400) to be polished. The lateral moving mechanism (200) is mounted on the support platform (100) and is used to drive the grinding mechanism (300) to move; The polishing mechanism (300) includes a support frame (310) and two polishing components (340). The support frame (310) is mounted on the support platform (100). The polishing components (340) include a polishing roller (343), a polishing roller bracket (342), and a polishing motor (341). The polishing roller bracket (342) is mounted on the support frame (310). The polishing roller (343) is rotatably mounted on the polishing roller bracket (342). The polishing motor (341) is mounted on the polishing roller bracket (342) and is connected to the polishing roller (343) in a driving transmission. The two grinding assemblies (340) have different friction grit numbers for their grinding rollers (343).

2. The medium-density fiberboard sanding device according to claim 1, characterized in that: The grinding mechanism (300) also includes two buffer components (320), each buffer component (320) including a spring seat, the movable end of which is disposed on the support frame (310), and the fixed end of which is disposed on the grinding roller bracket (342).

3. The medium-density fiberboard sanding device according to claim 2, characterized in that: The grinding mechanism (300) further includes an adjustment component (330), which includes an adjustment plate (332) and an adjustment screw (331). The adjustment plate (332) is slidably disposed on the support frame (310), and the adjustment screw (331) is threadedly connected to the support frame (310) and its end is rotatably connected to the adjustment plate (332). One end of the spring seat is disposed on the adjustment plate (332).

4. The medium-density fiberboard sanding device according to claim 1, characterized in that: The grinding mechanism (300) further includes two pre-pressure components (600), which are respectively disposed at both ends of the support frame (310). Each pre-pressure component includes an electric push rod (610), a moving rod (620), and a pre-pressure wheel (640). The fixed end of the electric push rod (610) is disposed on the support frame (310), the moving rod (620) is disposed on the telescopic rod of the electric push rod (610), and the pre-pressure wheel (640) is disposed on the moving rod (620). The electric push rod (610) is used to drive the pre-pressure wheel (640) to move in the vertical direction.

5. The medium-density fiberboard sanding device according to claim 4, characterized in that: It also includes a preload wheel position adjustment component (630), which includes a rotating shaft (631), a slider (632), and a bolt (633). The moving rod (620) has a groove, and the slider (632) is slidably disposed in the groove on the moving rod (620). The rotating shaft (631) is rotatably connected to the slider (632). The preload wheel (640) is disposed at one end of the rotating shaft (631), and the bolt (633) is threadedly connected to the slider (632) for locking and positioning the slider (632).

6. The medium-density fiberboard sanding device according to claim 4, characterized in that: The outer surface of the preload wheel (640) is fitted with a rubber layer.

7. The medium-density fiberboard sanding device according to claim 1, characterized in that: The lateral movement mechanism (200) includes a drive motor (210), a lead screw (220), and a positioning rod (240). The drive motor (210) is located on one side of the support platform (100). One end of the lead screw (220) is coaxially fixedly connected to the output shaft of the drive motor (210). The positioning rod (240) is slidably located on one side of the support platform (100) and threadedly connected to the lead screw (220). The support frame (310) is located on the positioning rod (240).

8. The medium-density fiberboard sanding device according to claim 1, characterized in that: The bottom of the support platform (100) is provided with a plurality of support legs (110), and each support leg (110) is provided with a fuma wheel (120) at its bottom.

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