A trimming device for oriented strand board production

Abstract

The application relates to the technical field of plate edge trimming equipment, and discloses a trimming device for oriented strand board production, which comprises a treatment table, a bottom support for balancing and supporting the treatment table is arranged at the bottom of the treatment table, and a supporting seat is arranged at the middle of the rear side of the treatment table; a uniform pressure applying mechanism is arranged on the supporting seat and is used for uniformly applying pressure to the surface of the oriented strand board to be treated; and a driving material transferring mechanism is arranged at the bottom of the treatment table and is used for driving and treating the oriented strand board after being treated by the uniform pressure applying mechanism. By increasing and arranging the uniform pressure applying mechanism, before trimming the oriented strand board, the mechanism can form a relatively sealed space by driving the top cover to move downward and cooperating with the sealing edge pad through the main cylinder, and then can uniformly apply pressure by injecting gas through the gas injection pump, so that the oriented strand board can be firmly fixed on the surface of the treatment table, displacement and warping of the plate in subsequent processing can be effectively avoided, and a foundation is laid for accurate pre-cutting and trimming.

Description

Technical Field

[0001] This invention relates to the field of board trimming equipment technology, specifically to a trimming device for oriented strand board (OSB) production. Background Technology

[0002] Oriented strand board (OSB) has a unique multi-layered oriented structure, with the surface and core layers of particleboard arranged in an alternating pattern. This structure results in a naturally weaker interlayer bond than the bond between the fibers within the board. When using a grinding roller to grind the edges of the board, the cutting impact force generated by the roller can easily act on the bonding interface between the surface and core layers, disrupting the bond stability and leading to delamination. Furthermore, the surface layer of OSB is composed of large particleboard chips. During grinding, if the surface is subjected to uneven stress, these large chips are prone to localized detachment or chipping, directly affecting the edge trimming quality.

[0003] Furthermore, due to the shape of the large surface flakes, the surface of oriented strand board (OSB) inherently possesses a certain degree of unevenness, further increasing the difficulty of grinding. During the grinding process, the board is prone to vibration, which causes the contact force between the grinding roller and the board to fluctuate unpredictably. This unstable contact not only exacerbates edge defects such as delamination and flake chipping but may also lead to edge scorching due to localized overheating from friction, severely affecting the board's appearance and suitability for subsequent processing.

[0004] Furthermore, fluctuations in contact force can cause localized overload on the grinding roller cutter, resulting in uneven loads on the cutting edge and accelerating its wear. Worn cutters not only reduce grinding accuracy but also further deteriorate processing results, creating a vicious cycle of defect accumulation, thus affecting overall product quality and production efficiency. Therefore, those skilled in the art have proposed a trimming device for oriented strand board (OSB) production to address the aforementioned technical problems. Summary of the Invention

[0005] To address the shortcomings of existing technologies, this invention provides a trimming device for oriented strand board (OSB) production, which solves the problem of trimming defects caused by uneven stress on the surface of OSB during trimming.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a trimming device for oriented strand board (OSB) production, comprising, The processing table has a bottom support bracket installed at the bottom for balancing support, and a support base is provided in the middle of the rear side of the processing table. A uniform pressure application mechanism, which is mounted on a support base, is used to apply uniform pressure to the surface of the oriented strand board to be treated. The drive transfer mechanism is located at the bottom of the processing table and is used to drive the oriented strand board after it has been processed by the uniform pressure mechanism. The pre-cutting mechanism, located on one side of the bottom of the processing table, is used to pre-cut the edges of the oriented strand board before trimming. The edge trimming mechanism is located on the other side of the bottom of the processing table and is used to trim the oriented strand board after it has been processed by the pre-cutting mechanism.

[0007] Preferably, the uniform pressure application mechanism includes a top cover, the top of the processing table is provided with a top cover, the top center of the top cover is provided with a rotating connecting seat, the front center of the top of the support seat is provided with a main cylinder, and the rod of the main cylinder is connected to the top center of the rotating connecting seat.

[0008] Preferably, the uniform pressure application mechanism further includes a sealing gasket, and a sealing gasket is provided at the bottom edge of the top cover. The sealing gasket is made of silicone material, and an air injection pump for injecting gas into the top cover is provided on both sides of the top center of the top cover.

[0009] Preferably, the drive transfer mechanism includes a central turntable base, which is rotatably connected to the top center of the processing table. A surface rubber pad is provided on the upper surface of the central turntable base, and a second drive motor is provided at the bottom center of the processing table. The output end of the second drive motor is connected to the bottom center of the central turntable base.

[0010] Preferably, the drive transfer mechanism further includes mounting cylinders, and multiple sets of mounting cylinders are arranged in a circumferential array around the top of the processing table. Each mounting cylinder is provided with a spring pin, and a ball bearing is provided at the top center of the spring pin to reduce the contact friction of the bottom of the shaped particleboard.

[0011] Preferably, the pre-cutting mechanism includes a sliding seat, which is slidably connected to one side of the middle portion of the bottom end of the processing table. A mounting seat is provided on one side of the middle portion of the top of the sliding seat, and a circular saw seat for pre-cutting the edge of the oriented particleboard is provided on the mounting seat. Auxiliary cylinders are provided on both sides of the middle portion of the bottom end of the processing table, and the rod of one auxiliary cylinder is connected to the middle portion of one side of the sliding seat.

[0012] Preferably, the trimming mechanism includes a second sliding seat. The second sliding seat is slidably connected to one side of the bottom center of the processing table. The middle of one side of the second sliding seat is connected to the top of the rod of the corresponding auxiliary cylinder on the same side. An arc-shaped seat is fixedly connected to the side of the second sliding seat away from the auxiliary cylinder. A hollow grinding roller is rotatably connected to the middle of the inner side of the arc-shaped seat. A first drive motor is provided in the middle of one side of the bottom of the arc-shaped seat, and the output end of the first drive motor is connected to the middle of the bottom of the grinding roller.

[0013] Preferably, the trimming mechanism further includes a hollow seat. Hollow seats are fixedly connected to both ends of the arc-shaped seat near the processing table. Limit seats are slidably connected inside the hollow seats. A mounting frame is fixedly connected to the middle of each limit seat. The other end of the mounting frame passes through the hollow seat and extends outward. A strong spring is provided in the middle of the inner side of each hollow seat. A pressure roller is rotatably connected to the inner side of the mounting frame away from the limit seat.

[0014] Preferably, the trimming mechanism further includes a transfer box, which is provided at the center of the top of the arc-shaped seat. The interior of the transfer box is connected to the interior of the grinding roller through multiple sets of internal flow channels. Multiple sets of openings are equidistantly formed on the outer wall surface of the grinding roller. A mounting box is provided at the center of the side of the arc-shaped seat away from the processing table. The top center of the mounting box is connected to the interior of the transfer box through a connecting pipe.

[0015] Preferably, the trimming mechanism further includes an air pump, an air pump for pumping out the gas inside the mounting box is provided at the bottom center, multiple mounting frames are equidistantly arranged at the inner center of the mounting box, a filter cotton plate is provided at the inner center of the mounting frame, and a cleaning door is provided at the front center of the mounting box.

[0016] Working principle: When trimming the oriented strand board (OSB) after processing, the uniform pressure mechanism is first activated. The operator places the OSB to be processed onto the processing table. After placement, the operator adjusts the center position of the OSB to overlap with the center position of the processing table, facilitating subsequent pre-cutting and trimming. After the OSB position is adjusted, the operator activates the main cylinder on the support base via the control equipment. Simultaneously, the rod on the main cylinder extends. As the rod is pushed out, it simultaneously moves the rotating connecting seat at its bottom and the top cover downwards. As the top cover moves downwards, its bottom sealing gasket comes into contact with the upper surface of the oriented strand board (OSB) on the processing table. With the top cover continuing to move downwards, it compresses the bottom sealing gasket, causing deformation. This creates a relatively sealed space between the surface of the OSB on the processing table and the interior of the top cover. Then, the rod of the main cylinder on the support seat stops pushing out. Afterwards, the operator starts the air injection pump via the control equipment. Simultaneously, the air injection pump starts, and the interior of the top cover... A uniform gas pressure is applied to the upper surface of the oriented strand board (OSB) on the processing table, thus firmly fixing it to the table surface. This completes the uniform pressure treatment of the OSB after edge trimming. Then, the material transfer mechanism is activated. During the pressure application process, as the surface pressure of the OSB increases and the top cover simultaneously squeezes it, the bottom surface of the OSB also adheres to the surface of the processing table. As the OSB moves downwards, the surface of the board is simultaneously compressed by rollers. The ball and its bottom spring pin cause it to retract into the mounting cylinder. Then, the second drive motor on the processing table starts. At the same time, the second drive motor drives the central turntable seat and the surface rubber pad on it to rotate synchronously. The central turntable seat rotates synchronously with the oriented strand board and the top cover on it. At the same time, the ball on the spring pin cooperates to reduce the contact friction between the center of the board and the surface of the processing table, thereby facilitating the rotation of the oriented strand board on the processing table. This completes the driving and rotation processing of the oriented strand board before the trimming process.Simultaneously, the pre-cutting mechanism is activated. While the drive transfer mechanism rotates the oriented strand board on the processing table, the operator controls the auxiliary cylinder on the left side of the bottom of the processing table to start via the control equipment. As the auxiliary cylinder starts, its rod extends, which in turn drives the sliding seat to move outward synchronously. Simultaneously, the sliding seat moves the mounting base and the circular saw base on it. After the sliding seat reaches the designated position, the rod on the auxiliary cylinder stops extending. At this time, the oriented strand board on the processing table rotates slowly and uniformly under the drive transfer mechanism. When the oriented strand board contacts the circular saw base on the mounting base during rotation, the circular saw base pre-cuts off the excess edge of the oriented strand board, forming a preliminary flat cut, which facilitates subsequent edge trimming. This completes the pre-cutting process of the oriented strand board.Afterwards, the trimming mechanism is activated. First, the operator starts the auxiliary cylinder on the right side of the bottom of the processing table via the control equipment. Simultaneously, the rod on the auxiliary cylinder extends, driving the sliding seat and the arc-shaped seat at the bottom of the processing table to move outwards synchronously. Once the arc-shaped seat reaches the designated position, the rod on the auxiliary cylinder stops extending, then drives the rotating material mechanism to rotate the oriented strand board on the processing table. This forces the oriented strand board to be squeezed between the two pressure rollers. At this point, the board between the pressure rollers presses against the limiting seat on the pressure roller. As the limiting seat moves upwards within the hollow seat, it compresses the strong spring inside, causing it to contract. When compressed, the powerful spring generates a reverse force. Therefore, the powerful spring applies pressure simultaneously to the upper and lower edges of the board through the limiting seat, mounting bracket, and pressure rollers. After the oriented strand board (OSB) enters between the two pressure rollers at its edge, the drive motor on the arc-shaped seat starts. The rotating shaft of the drive motor drives the grinding roller inside to rotate synchronously. The grinding roller grinds the edge of the OSB while rotating. Simultaneously, the vacuum pump starts, drawing air from inside the mounting box to create a negative pressure vacuum. At this time, the air from the external environment carries the dust generated during the grinding process through... The air enters the grinding roller through the openings, and then the air carrying dust inside the grinding roller flows through the internal channel into the transfer box for a brief stay. Afterwards, the air inside the transfer box, carrying dust, enters the mounting box through the connecting pipe. When the air entering the mounting box is discharged, it is separated by the filter cotton plate on the mounting frame and then pumped out by the air pump. Simultaneously, when the grinding roller trims the edges of the oriented strand board on the processing table, because the grinding roller has a hollow structure and multiple sets of openings on its surface, and its internal space is connected to the transfer box, an adsorption airflow is continuously generated at the surface openings of the grinding roller during its rotation, pointing towards the inside of the roller body. When the grinding roller trims the oriented strand board... During edge trimming, wood chips and powder generated during cutting are scattered in all directions under the action of centrifugal force and cutting airflow. At this time, the negative pressure airflow at the opening quickly draws these waste materials into the trimming roller, preventing them from staying in the processing area or adhering to the tool and board surface. The waste materials entering the trimming roller are carried by the airflow through the internal channel into the transfer box, and then transported to the installation box through the connecting pipe for filtration and collection, achieving centralized treatment of waste materials. Throughout the process, negative pressure adsorption not only effectively removes dust from the processing area, but also makes the contact between the trimming roller and the board edge more stable, reducing the generation of vibration and frictional heat, thereby significantly improving the trimming quality and extending the tool life, thus completing the trimming process of oriented strand board.

[0017] This invention provides a trimming device for oriented strand board (OSB) production. It has the following advantages: 1. This invention, by adding and setting a uniform pressure mechanism, before trimming the oriented strand board (OSB), uses a main cylinder to drive the top cover downward to form a relatively sealed space with the sealing edge gasket. Then, gas is injected by an air pump to achieve uniform pressure, which can firmly fix the OSB to the surface of the processing table, effectively preventing the board from shifting or warping during subsequent processing. This lays the foundation for precise pre-cutting and trimming. On the other hand, the gas pressure method can adapt to the uneven surface of the board, avoiding excessive local pressure that could damage the board or insufficient pressure that could lead to unstable fixation. At the same time, the sealing structure can reduce the entry of processing dust into the pressure area, ensuring the stability of pressure and the cleanliness of the board surface.

[0018] 2. By adding and setting a drive transfer mechanism, this invention can not only drive the central turntable to rotate during the edge trimming process of oriented strand board (OSB), thus achieving smooth rotation of the OSB and ensuring that the edges of the board pass evenly through the pre-cutting and trimming mechanism, guaranteeing consistent processing throughout the circumference, but also, with the design of spring pins and ball bearings, retract and avoid when the board is pressed down, while significantly reducing the contact friction between the board and the processing table, reducing resistance and wear during board rotation, and preventing board vibration or surface scratches due to excessive friction, thereby improving the smoothness of transfer and the integrity of the board surface.

[0019] 3. By adding and setting a pre-cutting mechanism, this invention first drives the sliding seat of the auxiliary cylinder to move and adjust the position of the circular saw seat when trimming the oriented strand board, adapting to the pre-cutting requirements of different specifications of oriented strand board, which is highly flexible. Secondly, this mechanism can cut off the excess part of the edge of the board before trimming, forming a preliminary flat cut, effectively avoiding defects such as interlayer delamination and chipping caused by excessive cutting amount when the grinding roller is directly processed in the subsequent process. At the same time, it reduces the cutting burden of the grinding roller and creates good conditions for subsequent high-precision trimming.

[0020] 4. By adding and setting an edge trimming mechanism, this invention not only applies pressure to the edges of oriented strand board (OSB) simultaneously through a powerful spring-driven pressure roller, thus compacting the interlayer structure, suppressing processing vibration, and ensuring stable contact between the grinding roller and the board edge, reducing edge chipping and delamination, but also, when combined with a hollow perforated grinding roller and a negative pressure collection system, can promptly remove dust and waste generated during grinding, preventing edge blackening and scorching caused by secondary friction and dust adhesion. It also removes some cutting heat, reducing tool wear and extending tool life. Furthermore, it allows for centralized waste treatment through a filter board, improving the cleanliness of the processing environment. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the front structure of the present invention; Figure 2This is a schematic diagram of the rear structure of the present invention; Figure 3 This is a front view structural diagram of the present invention; Figure 4 This is a schematic diagram of the top structure of the processing table of the present invention; Figure 5 This is a partial structural diagram of the mounting cylinder of the present invention; Figure 6 This is a schematic diagram of a partial structure of the top cover of the present invention; Figure 7 This is a partial structural diagram of the mounting base of the present invention; Figure 8 This is a partial structural diagram of the arc-shaped seat of the present invention; Figure 9 This is a cross-sectional schematic diagram of the internal structure of the hollow seat of the present invention; Figure 10 This is a cross-sectional view of the internal structure of the mounting box of the present invention.

[0022] The components are as follows: 1. Processing table; 2. Mounting cylinder; 3. Sliding seat one; 4. Mounting seat; 5. Circular saw seat; 6. Sealing gasket; 7. Air pump; 8. Support seat; 9. Main cylinder; 10. Rotary connecting seat; 11. Transfer box; 12. Arc seat; 13. Mounting box; 14. Top cover; 15. Suction pump; 16. Grinding roller; 17. Drive motor one; 18. Sliding seat two; 19. Drive motor two; 20. Auxiliary cylinder; 21. Pressure roller; 22. Central turntable seat; 23. Surface rubber pad; 24. Ball bearing; 25. Spring pin; 26. Mounting frame; 27. Hollow seat; 28. Opening; 29. ​​Strong spring; 30. Limit seat; 31. Mounting frame; 32. Filter cotton plate. Detailed Implementation

[0023] The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0024] Please see the appendix Figure 1 - Appendix Figure 3 This invention provides a trimming device for oriented strand board (OSB) production, including a processing table 1. A bottom bracket is installed at the bottom of the processing table 1 to provide balanced support, and a support seat 8 is provided at the center of the rear side of the processing table 1. Please see the appendix Figure 4 - Appendix Figure 6 A uniform pressure application mechanism, which is set on the support base 8, is used to apply uniform pressure to the surface of the oriented strand board to be processed. The uniform pressure application mechanism includes a top cover 14. The top of the processing table 1 is provided with a top cover 14. A rotating connecting seat 10 is provided at the middle of the top of the top of the top cover 14. A main cylinder 9 is provided at the front middle of the top of the support seat 8. The rod of the main cylinder 9 is connected to the middle of the top of the rotating connecting seat 10.

[0025] When the uniform pressure mechanism is activated, the operator places the oriented strand board (OSB) to be processed on the surface of the processing table 1. After the OSB is placed, the operator adjusts the center position of the OSB to overlap with the center position of the processing table 1, so as to facilitate the subsequent pre-cutting and trimming of the OSB.

[0026] After the position of the oriented strand board is adjusted, the staff controls the main cylinder 9 on the support base 8 to start through the control equipment. At the same time as the main cylinder 9 starts, its rod is pushed out. As the rod of the main cylinder 9 is pushed out, it drives the rotating connecting seat 10 at the bottom and the top cover 14 to move down synchronously. As the top cover 14 moves down, it also drives the sealing edge gasket 6 at the bottom to fit against the upper surface of the oriented strand board on the processing table 1.

[0027] The uniform pressure application mechanism also includes a sealing gasket 6. A sealing gasket 6 is provided at the bottom edge of the top cover 14. The sealing gasket 6 is made of silicone. Air pumps 7 for injecting gas into the top cover 14 are provided on both sides of the top center of the top cover 14.

[0028] As the top cover 14 moves downward, it deforms by squeezing the sealing gasket 6 at its bottom, thus creating a relatively sealed space between the surface of the oriented strand board on the processing table 1 and the interior of the top cover 14. Then, the rod of the main cylinder 9 on the support base 8 stops pushing out. After that, the operator starts the air pump 7 through the control equipment. At the same time as the air pump 7 starts, the interior of the top cover 14, which is the upper surface of the oriented strand board on the processing table 1, is uniformly pressurized with gas. The uniform gas pressure on the upper surface of the oriented strand board firmly fixes it to the surface of the processing table 1, thus completing the uniform pressure treatment of the oriented strand board after the edge trimming process.

[0029] Before trimming the surface of oriented strand board (OSB), applying uniform pressure to the OSB surface using a uniform pressure application mechanism will produce the following effect: 1. Ensure trimming dimensional accuracy and avoid deviations; uniform pressure firmly fixes the oriented strand board (OSB) to the processing table 1, eliminating the lateral thrust and vibration displacement generated during the cutting of the grinding roller 16. Because the surface and core layers of OSB are arranged perpendicularly, the cutting resistance is significantly directional. Without pressure constraint, the board easily slips along the direction of least resistance, resulting in out-of-tolerance length and width dimensions and unequal diagonals after trimming. After applying uniform pressure, the reference surface of the board is completely in contact with the worktable, and the cutting path of the grinding roller 16 is always consistent with the preset trajectory, ensuring dimensional consistency of boards in the same batch.

[0030] 2. Reducing edge chipping and delamination defects: The interlayer bonding strength of oriented strand board (OSB) is weaker than the internal fiber bonding strength. The impact force of the grinding roller 16 during cutting can easily damage the bonding interface between the surface and core layers, causing delamination. At the same time, if the large surface chips are subjected to uneven force, local chipping can easily occur. Uniform pressure can compact the interlayer structure of the board, improve the shear resistance of the interlayer bonding surface, and counteract the peeling effect of the cutting force on the interlayer. In addition, pressure can make the contact between the grinding roller 16 and the edge of the board more stable, avoid local stress concentration, reduce fiber tearing and chip chipping, and make the edge smooth and dense after trimming.

[0031] Third, it improves the smoothness of the edge surface and reduces the difficulty of subsequent processing. Due to the presence of large particleboard chips, the surface of oriented strand board has a certain degree of unevenness. Uniform pressure can maintain a constant contact gap between the board surface and the grinding roller 16, so that the grinding roller 16 can grind the edge to a uniform depth. This can remove edge burrs and loose fibers without local over-grinding or under-grinding. The roughness of the treated edge surface is reduced, and subsequent processes such as edge sealing and veneer can be carried out directly without additional fine grinding, thus improving processing efficiency.

[0032] IV. Improve processing stability and reduce tool wear; Without pressure constraint, the vibration of the plate will cause the contact force between the grinding roller 16 and the plate to fluctuate, which will not only aggravate edge defects, but also cause local overload of the tool and accelerate the wear of the cutting edge. Uniform pressure can suppress the vibration of the plate, keep the cutting force of the grinding roller 16 stable, reduce the impact contact between the tool and the plate, extend the tool service life, and avoid dust splashing and edge burning caused by vibration.

[0033] Please see the appendix Figure 3 - Appendix Figure 4 The drive transfer mechanism is located at the bottom of the processing table 1 and is used to drive the oriented particleboard after it has been processed by the uniform pressure mechanism. The drive transfer mechanism also includes mounting cylinders 2. Multiple sets of mounting cylinders 2 are arranged in a circular array around the top of the processing table 1. Each mounting cylinder 2 is equipped with a spring pin 25. A ball bearing 24 is provided at the top center of the spring pin 25 to reduce the contact friction of the bottom of the shaped particleboard.

[0034] When the drive transfer mechanism is started, during the process of the uniform pressure mechanism applying pressure to the oriented strand board on the processing table 1, as the surface pressure of the oriented strand board increases and the top cover 14 simultaneously squeezes it, the bottom surface of the oriented strand board also comes into contact with the surface of the processing table 1. During the process of the oriented strand board moving down, the surface of the board simultaneously squeezes the ball bearing 24 and the spring pin 25 at its bottom, causing it to shrink into the mounting cylinder 2.

[0035] The drive transfer mechanism includes a central turntable seat 22. The central turntable seat 22 is rotatably connected to the top center of the processing table 1. A surface pad 23 is provided on the upper surface of the central turntable seat 22. A second drive motor 19 is provided at the bottom center of the processing table 1. The output end of the second drive motor 19 is connected to the bottom center of the central turntable seat 22.

[0036] Then, the drive motor 19 on the processing table 1 is started. At the same time, the drive motor 19 drives the central turntable seat 22 and the surface pad 23 on it to rotate synchronously. While the central turntable seat 22 is rotating, it drives the oriented strand board and the top cover 14 on it to rotate synchronously. At the same time, the contact friction between the center of the board and the surface of the processing table 1 is reduced through the cooperation of the ball bearings 24 on the spring pin 25, thereby facilitating the rotation of the oriented strand board on the processing table 1. This completes the driving and rotation processing of the oriented strand board before the trimming process.

[0037] Please see the appendix Figure 3 and attached Figure 7 The pre-cutting mechanism is located on one side of the bottom of the processing table 1 and is used to pre-cut the edges of the oriented particleboard before trimming. The pre-cutting mechanism includes a sliding seat 3. The sliding seat 3 is slidably connected to one side of the middle part of the bottom end of the processing table 1. A mounting seat 4 is provided on one side of the middle part of the top of the sliding seat 3. A circular saw seat 5 for pre-cutting the edge of the oriented particleboard is provided on the mounting seat 4. Auxiliary cylinders 20 are provided on both sides of the middle part of the bottom end of the processing table 1. The rod of one auxiliary cylinder 20 is connected to the middle part of one side of the sliding seat 3.

[0038] When the pre-cutting mechanism is started, while the drive transfer mechanism drives the oriented strand board to rotate on the processing table 1, the operator controls the auxiliary cylinder 20 on the left side of the bottom of the processing table 1 to start through the control equipment. At the same time as the auxiliary cylinder 20 is started, its rod is pushed out. As the rod of the auxiliary cylinder 20 is pushed out, it drives the sliding seat 3 to move outward synchronously. At the same time as the sliding seat 3 moves, it drives the mounting seat 4 and the circular saw seat 5 on it to move synchronously.

[0039] After the sliding seat 3 moves to the designated position, the rod on the auxiliary cylinder 20 stops and pushes out. At this time, the oriented strand board on the processing table 1 rotates slowly and uniformly under the drive of the material transfer mechanism. When the oriented strand board contacts the circular saw seat 5 on the mounting base 4 during the rotation, the circular saw seat 5 pre-cuts off the excess part of the edge of the oriented strand board to form a preliminary flat cut, which facilitates subsequent edge trimming and thus completes the pre-cutting process of the oriented strand board.

[0040] Please see the appendix Figure 8 - Appendix Figure 10 The trimming mechanism is located on the other side of the bottom of the processing table 1 and is used to trim the oriented strand board after it has been processed by the pre-cutting mechanism.

[0041] The trimming mechanism includes a sliding seat 18. The sliding seat 18 is slidably connected to one side of the bottom center of the processing table 1. The middle of one side of the sliding seat 18 is connected to the top of the rod of the corresponding auxiliary cylinder 20 on the same side. An arc-shaped seat 12 is fixedly connected to the side of the sliding seat 18 away from the auxiliary cylinder 20. A hollow grinding roller 16 is rotatably connected to the middle of the inner side of the arc-shaped seat 12. A drive motor 17 is provided in the middle of one side of the bottom of the arc-shaped seat 12, and the output end of the drive motor 17 is connected to the middle of the bottom of the grinding roller 16.

[0042] When the trimming mechanism is started, the operator first controls the auxiliary cylinder 20 on the right side of the bottom of the processing table 1 through the control equipment. At the same time as the auxiliary cylinder 20 is started, the rod on it is pushed out. As the rod of the auxiliary cylinder 20 is pushed out, it drives the sliding seat 18 and the arc seat 12 at the bottom of the processing table 1 to move outward synchronously. After the arc seat 12 moves to the designated position, the rod on the auxiliary cylinder 20 stops pushing out.

[0043] The trimming mechanism also includes a hollow seat 27. Hollow seats 27 are fixedly connected to both ends of the arc-shaped seat 12 near the processing table 1. Limit seats 30 are slidably connected inside the hollow seats 27. Mounting brackets 26 are fixedly connected to the middle of the limiting seats 30. The other end of the mounting brackets 26 passes through the hollow seats 27 and extends outward. A strong spring 29 is provided in the middle of the inner side of the hollow seats 27. Pressure rollers 21 are rotatably connected to the inner side of the mounting brackets 26 away from the limiting seats 30.

[0044] Then, the drive rotating material mechanism drives the oriented particleboard on the processing table 1 to rotate, so that the oriented particleboard on the processing table 1 is squeezed into the space between the two pressure rollers 21. At this time, the board between the pressure rollers 21 squeezes the limiting seat 30 on the pressure roller 21. While the limiting seat 30 moves upward in the hollow seat 27, it squeezes the strong spring 29 inside to make it contract. At the same time, the strong spring 29 will generate a reverse force after being squeezed. Therefore, the strong spring 29 will apply pressure to the upper and lower edges of the board simultaneously through the limiting seat 30, the mounting bracket 26 and the pressure roller 21 on it.

[0045] Applying uniform pressure simultaneously to the upper and lower surfaces of the oriented strand board (OSB) before trimming the edges will produce the following effect: First, the synchronous pressure rollers 21 apply force evenly in both directions, firmly clamping the oriented strand board onto the processing reference surface, completely eliminating the lateral thrust and longitudinal vibration generated during the cutting of the grinding rollers 16. Compared to the warping and displacement problems that can easily occur with unilateral pressure, bidirectional synchronous pressure ensures that the board remains in a horizontal and stable state, ensuring that the cutting path of the grinding rollers 16 completely coincides with the preset trajectory. This effectively avoids dimensional deviations and diagonal discrepancies caused by vibration or slippage, ensuring the dimensional consistency of the boards after trimming in the same batch.

[0046] Second, the inherent weakness of interlayer bonding in oriented strand board (OSB) makes the bonding interface between the surface and core layers easily damaged by cutting impact. Simultaneous pressure from both top and bottom layers creates uniform pre-stress in the trimming area, compacting the interlayer structure, improving the shear resistance of the interlayer bonding surface, and counteracting the peeling force exerted on the bonding interface by the grinding roller 16, significantly reducing the probability of delamination. Simultaneously, simultaneous pressure ensures uniform stress on the large surface chips, preventing chip breakage caused by localized overload, resulting in smooth, dense edges after trimming, free of loose fibers and gaps.

[0047] Third, the surface of oriented strand board (OSB) is uneven due to the presence of large particleboard chips. If the pressure is uneven, the contact gap between the grinding roller 16 and the edge of the board will fluctuate, leading to localized over-sanding or under-sanding. Applying pressure simultaneously from top and bottom keeps the edge area of ​​the board stable and straight, ensuring that the contact gap between the grinding roller 16 and the edge of the board is always uniform. This thoroughly removes burrs and loose fibers from the edges without causing excessive localized sanding, significantly improving the smoothness of the trimmed edges and providing a good foundation for subsequent edge banding, veneer, and other processes.

[0048] Fourth, the bidirectional synchronous pressure keeps the contact force between the grinding roller 16 and the plate constant, avoiding the problem of inconsistent contact force caused by vibration. This stable cutting state can prevent local overload of the cutting edge of the grinding roller 16, making the tool wear speed uniform. This not only extends the tool service life and reduces the tool replacement frequency, but also avoids secondary defects such as edge burning and roughness caused by accelerated tool wear, thus improving the overall processing efficiency and product qualification rate.

[0049] The trimming mechanism also includes a transfer box 11. The transfer box 11 is located at the top center of the arc-shaped seat 12. The interior of the transfer box 11 is connected to the interior of the grinding roller 16 through multiple sets of internal flow channels. Multiple sets of openings 28 are equidistantly opened on the outer wall surface of the grinding roller 16. A mounting box 13 is located at the center of the side of the arc-shaped seat 12 away from the processing table 1. The top center of the mounting box 13 is connected to the interior of the transfer box 11 through a connecting pipe.

[0050] After the oriented strand board (OSB) enters between the two pressure rollers 21 at its edge, the drive motor 17 on the arc-shaped seat 12 is started. The shaft of the drive motor 17 rotates, driving the grinding roller 16 inside to rotate synchronously. The grinding roller 16 grinds the edge of the OSB while rotating. At the same time, the vacuum pump 15 is started, drawing air from the inside of the mounting box 13, thus creating a negative pressure vacuum inside the mounting box 13. At this time, the air in the external environment carries the dust generated during the grinding process and enters the grinding roller 16 through the opening 28. Then, the air carrying dust inside the grinding roller 16 enters the transfer box 11 through the internal flow channel and stays briefly. After that, the air inside the transfer box 11 carries the dust and enters the mounting box 13 through the connecting pipe. When the air entering the mounting box 13 is discharged, it is separated by the filter cotton plate 32 on the mounting frame 31 and then drawn out by the vacuum pump 15.

[0051] The trimming mechanism also includes an air pump 15. An air pump 15 is installed at the bottom center of the mounting box 13 to pump out the gas inside. Multiple mounting frames 31 are equidistantly arranged at the inner center of the mounting box 13. A filter cotton plate 32 is installed at the inner center of the mounting frame 31. A cleaning door is installed at the front center of the mounting box 13.

[0052] Meanwhile, when the grinding roller 16 trims the oriented particleboard on the processing table 1, since the grinding roller 16 has a hollow structure and multiple sets of openings 28 on its surface, and the internal space of the grinding roller 16 is connected to the transfer box 11, during the rotation of the grinding roller 16, an adsorption airflow pointing towards the inside of the roller body will be continuously generated at the openings 28 on its surface.

[0053] When the grinding roller 16 grinds the edge of the oriented strand board, the wood chips and powder generated during cutting are scattered in all directions under the action of centrifugal force and cutting airflow. At this time, the negative pressure airflow at the opening 28 will quickly draw these waste materials into the interior of the grinding roller 16, preventing them from staying in the processing area or adhering to the surface of the tool and the board. The waste materials entering the interior of the grinding roller 16 are carried by the airflow through the internal flow channel into the transfer box 11, and then transported to the installation box 13 through the connecting pipe for filtration and collection, realizing the centralized treatment of waste materials. In the whole process, the negative pressure adsorption not only effectively removes the dust in the processing area, but also makes the contact between the grinding roller 16 and the edge of the board more stable, reducing the generation of vibration and frictional heat, thereby significantly improving the trimming quality and extending the tool life, thus completing the trimming processing of the oriented strand board.

[0054] The grinding roller 16, with its hollow structure and multiple sets of openings 28 on its surface, works in conjunction with a negative pressure collection system formed by a transfer box 11, a mounting box 13, and an air pump 15. This significantly improves the edge-trimming quality and processing stability when trimming pre-cut oriented strand board. First, the negative pressure creates a continuous adsorption force inside the grinding roller 16, allowing sawdust, powder, and other waste generated during the grinding process to be quickly drawn into the roller 16. This prevents waste from accumulating in the processing area, effectively reducing secondary friction, scratches, and edge blackening or scorching caused by dust adhesion.

[0055] Secondly, negative pressure adsorption ensures more stable contact between the grinding roller 16 and the edge of the sheet material, reducing fluctuations in the contact gap caused by dust interference and helping to improve the smoothness and consistency of the trimmed edges. Furthermore, because waste is promptly removed, the cutting edge of the grinding roller 16 remains clean, resulting in higher cutting efficiency, more uniform tool wear, and a significantly extended service life. Simultaneously, the negative pressure environment can also remove some of the cutting heat, reducing the risk of carbonization at the edges due to high temperatures and further improving the trimming quality.

[0056] Although embodiments of the 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 invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A trimming device for oriented strand board (OSB) production, characterized in that, include, Processing table (1), the bottom of the processing table (1) is equipped with a bottom bracket for balancing support, and a support seat (8) is provided in the middle of the rear side of the processing table (1). A uniform pressure application mechanism is provided on the support base (8) for uniformly applying pressure to the surface of the oriented strand board to be processed; The drive transfer mechanism is located at the bottom of the processing table (1) and is used to drive the oriented particleboard after it has been processed by the uniform pressure mechanism. The pre-cutting mechanism is located on one side of the bottom of the processing table (1) and is used to pre-cut the edges of the oriented particleboard before trimming. The trimming mechanism is located on the other side of the bottom of the processing table (1) and is used to trim the oriented particleboard after it has been processed by the pre-cutting mechanism.

2. The trimming device for oriented strand board (OSB) production according to claim 1, characterized in that, The uniform pressure application mechanism includes a top cover (14), the top of the processing table (1) is provided with a top cover (14), the top center of the top cover (14) is provided with a rotating connecting seat (10), the front center of the top of the support seat (8) is provided with a main cylinder (9), and the rod of the main cylinder (9) is connected to the top center of the rotating connecting seat (10).

3. The trimming device for oriented strand board (OSB) production according to claim 2, characterized in that, The uniform pressure application mechanism also includes a sealing gasket (6). A sealing gasket (6) is provided at the bottom edge of the top cover (14). The sealing gasket (6) is made of silicone. Gas pumps (7) for injecting gas into the top cover (14) are provided on both sides of the top center of the top cover (14).

4. The trimming device for oriented strand board (OSB) production according to claim 1, characterized in that, The drive transfer mechanism includes a central turntable seat (22), the central turntable seat (22) is rotatably connected to the top center of the processing table (1), the upper surface of the central turntable seat (22) is provided with a surface rubber pad (23), the bottom center of the processing table (1) is provided with a second drive motor (19), and the output end of the second drive motor (19) is connected to the bottom center of the central turntable seat (22).

5. A trimming device for oriented strand board (OSB) production according to claim 4, characterized in that, The drive transfer mechanism also includes mounting cylinders (2). Multiple sets of mounting cylinders (2) are arranged in a circular array around the top of the processing table (1). Each mounting cylinder (2) is equipped with a spring pin (25). A ball bearing (24) is provided at the top center of the spring pin (25) to reduce the contact friction of the bottom of the shaped particleboard.

6. The trimming device for oriented strand board (OSB) production according to claim 1, characterized in that, The pre-cutting mechanism includes a sliding seat (3), which is slidably connected to one side of the middle part of the bottom end of the processing table (1). A mounting seat (4) is provided on one side of the middle part of the top of the sliding seat (3). A circular saw seat (5) for pre-cutting the edge of the oriented particleboard is provided on the mounting seat (4). A secondary cylinder (20) is provided on both sides of the middle part of the bottom end of the processing table (1). The rod of one side of the secondary cylinder (20) is connected to the middle part of one side of the sliding seat (3).

7. The trimming device for oriented strand board (OSB) production according to claim 1, characterized in that, The trimming mechanism includes a sliding seat 2 (18). The sliding seat 2 (18) is slidably connected to one side of the bottom center of the processing table (1). The middle side of the sliding seat 2 (18) is connected to the top of the rod of the corresponding auxiliary cylinder (20) on the same side. An arc-shaped seat (12) is fixedly connected to the side of the sliding seat 2 (18) away from the auxiliary cylinder (20). A hollow grinding roller (16) is rotatably connected to the middle inner side of the arc-shaped seat (12). A drive motor 1 (17) is provided in the middle of one side of the bottom of the arc-shaped seat (12), and the output end of the drive motor 1 (17) is connected to the middle bottom of the grinding roller (16).

8. A trimming device for oriented strand board (OSB) production according to claim 7, characterized in that, The trimming mechanism also includes a hollow seat (27). The hollow seat (27) is fixedly connected to both ends of the arc-shaped seat (12) near the processing table (1). The hollow seat (27) is slidably connected to a limiting seat (30). The limiting seat (30) is fixedly connected to a mounting bracket (26) in the middle. The other end of the mounting bracket (26) passes through the hollow seat (27) and extends outward. A strong spring (29) is provided in the middle of the inner side of the hollow seat (27). A pressure roller (21) is rotatably connected to the inner side of the mounting bracket (26) away from the limiting seat (30).

9. A trimming device for oriented strand board (OSB) production according to claim 8, characterized in that, The trimming mechanism also includes a transfer box (11). The transfer box (11) is located at the top center of the arc-shaped seat (12). The interior of the transfer box (11) is connected to the interior of the grinding roller (16) through multiple sets of internal flow channels. Multiple sets of openings (28) are equidistantly opened on the outer wall surface of the grinding roller (16). A mounting box (13) is located at the center of the side of the arc-shaped seat (12) away from the processing table (1). The top center of the mounting box (13) is connected to the interior of the transfer box (11) through a connecting pipe.

10. A trimming device for oriented strand board (OSB) production according to claim 9, characterized in that, The trimming mechanism also includes an air pump (15). An air pump (15) for pumping out the gas inside the mounting box (13) is provided at the bottom center. Multiple mounting frames (31) are provided at equal intervals on the inner center of the mounting box (13). A filter cotton plate (32) is provided on the inner center of the mounting frame (31). A cleaning door is provided on the front center of the mounting box (13).

Images