A safety cutting device for solid wood boards

Abstract

The present application relates to the field of decoration engineering, disclose a kind of safety cutting device of solid wood board, including workbench, the top end middle part of the workbench is equipped with straight slot, the bottom end front and back side of the workbench is fixedly connected with vertical plate, the surface of the support plate is movably connected with movable block by four guide rods, the driving end of the DC motor extends to the inside of inner cavity and is equipped with saw blade, the other end of the movable block is equipped with brake assembly, the bottom of the movable block is also equipped with falling assembly, the bottom end four corners of the workbench are fixedly connected with support leg.The present application increases brake assembly and falling assembly, utilizes the huge pressure generated when igniter ignites mixed gas in cylinder, pushes brake plate to resist in one end of saw blade to realize the emergency brake of saw blade, while the both sides support of movable block is released, uses tension spring to rapidly pull down, the whole process takes no more than 15 thousandths of a second, can greatly avoid the danger generated in the process of operation.

Description

Technical Field

[0001] This invention relates to the field of decoration engineering, specifically to a safe cutting device for solid wood boards. Background Technology

[0002] Solid wood panels are board-shaped materials made from natural wood, retaining the natural texture, color, and feel of the wood. They are commonly used in furniture making, flooring, wall decoration, doors and windows, cabinets, and other home and construction applications. In home renovation, the most commonly used cutting tool for solid wood panels is a table saw, also known as a benchtop saw. A table saw is a tool that provides a stable working platform for precise cutting. It is suitable for various types of materials and tasks, and is commonly used in woodworking and metalworking. It features a unique super-platform height adjustment device that can lock into any position, allowing for cutting the material from its maximum top position by flipping it over.

[0003] Existing table saws have some drawbacks in use. Typical table saws are only equipped with simple protective structures, such as cutting guards, power switches, and material fixing devices to reduce operational risks. However, in actual operation, because workers need to press their hands on the surface of the board and then push the board to cut, the high-speed rotating saw blade poses a serious safety hazard to workers. If they accidentally touch the saw blade, it can cause serious physical injury. Basic protective structures alone are not enough. Secondly, the cutting process generates a lot of dust and debris, which, if not handled properly, will seriously affect the working environment. Summary of the Invention

[0004] To address the shortcomings of existing technologies, this invention provides a safe cutting device for solid wood boards, which solves the problems of serious safety hazards to workers caused by high-speed rotating saw blades during the cutting process and the generation of a large amount of dust and debris during the cutting process, affecting the on-site working environment.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a safe solid wood board cutting device, comprising a workbench with a straight groove at the top center, upright plates fixedly connected to the front and rear sides of the bottom of the workbench, the bottom ends of the upright plates being fixedly connected to the top two sides of a support plate, movable blocks being movably connected to the surface of the support plate via four guide rods, the movable blocks having an internal cavity, a DC motor mounted on one end of the movable block, the drive end of the DC motor extending into the internal cavity and mounting a saw blade, the top end of the saw blade penetrating the straight groove and extending above the workbench, a braking assembly at the other end of the movable block, a falling assembly at the bottom of the movable block, and support legs fixedly connected to the four corners of the bottom of the workbench. The DC motor drives the saw blade to rotate at high speed to complete the board cutting operation. The braking assembly brakes the saw blade in emergency situations, and the falling assembly conceals the saw blade's fall after emergency braking, improving safety.

[0006] Preferably, the braking assembly includes a cylinder body, which is fixedly connected to the middle of the right end of the movable block. A piston is movably connected inside the cylinder body, and a piston rod is fixedly connected to the middle of the left end of the piston. The end of the piston rod extends into the interior of the cavity and is fixedly connected to a brake plate. An igniter is provided at the middle of the right end of the cylinder body. The cylinder body is filled with a mixed gas, which is a mixture of air and atomized gasoline in a ratio of 14:1. The mixed gas is ignited by the igniter. Similar to the principle of a car engine, the air in the cylinder body expands rapidly, which will generate huge pressure in the cylinder body and push the piston to the leftmost end of the cylinder body in an instant. Both sides of the left end of the piston are connected to the inner wall of the movable block by return springs to complete the braking action of the saw blade.

[0007] Preferably, an adjustment mechanism is provided on one side of the top of the workbench. The adjustment mechanism includes a slide groove, which is located on the left side of the upper surface of the workbench. A slider is movably connected inside the slide groove. The top of the slider is fixedly connected to the middle of the bottom of the backing plate. The slider can move within the slide groove to adjust the position of the backing plate.

[0008] Preferably, the middle part of the slider is threadedly connected to the middle outer diameter of the threaded rod, the left end of the threaded rod is fixedly connected to a handwheel, the right end of the back plate is movably connected to several guide wheels, and the front side of the upper surface of the worktable is also provided with a scale. By turning the handwheel, the threaded rod is rotated, thereby moving the slider in the groove to adjust the position of the back plate. The guide wheels can guide the plate during the movement, and the scale makes it easy to adjust the cutting distance.

[0009] Preferably, a dust removal mechanism is provided at the rear top of the workbench. The dust removal mechanism includes a gantry frame, which is fixedly connected to the rear top of the workbench. A negative pressure fan is installed at the middle of the top of the gantry frame. The input end of the negative pressure fan extends through a metal input pipe to directly above the saw blade and is fixedly connected to a dust cover. A thermal infrared imager is installed at the middle of the front end of the gantry frame via a bracket. The dust removal mechanism is used to clean the wood chips and dust generated during the board cutting process, and the thermal infrared imager is used to detect whether a human body is near the saw blade.

[0010] Preferably, the output end of the negative pressure fan is fixedly connected to a dust collection box, and the right end of the dust collection box is evenly provided with a number of filter holes. The dust collection box is used to collect sawdust dust, and the filter holes are used to block the sawdust dust and discharge clean air.

[0011] Preferably, both sides of the left end of the piston are connected to the inner wall of the movable block by return springs. An exhaust valve is installed on the front right end of the cylinder, and an intake valve is provided on the rear end of the cylinder. The return spring can reset the piston after emergency braking for easy use next time. The exhaust valve is used to discharge the air remaining in the cylinder after emergency braking, and the intake valve is used to refill the mixed gas after emergency braking.

[0012] Preferably, the falling assembly includes two support rods, which are movably connected to the front and rear sides of the movable block. A magnetic plate is fixedly connected to the inner end of each support rod. A through hole is provided in the middle of the piston rod, and a frame hole is provided on the upper inner side of each upright plate. The outer ends of each support rod extend into the corresponding frame hole. After the saw blade brakes, the through hole moves with the piston rod. When the through hole moves to the position of the two magnetic plates, the magnetic force attracting the two magnetic plates together pulls the two support rods inward a short distance, causing the ends of the support rods to detach from the frame hole. At this point, the movable block lacks support on both sides, and the bottom tension spring quickly retracts, pulling down and concealing the movable block and saw blade, thus improving safety.

[0013] Preferably, both sides of the bottom end of the movable block are connected to the top of the support plate by tension springs, which are used to pull the saw blade down below the worktable after emergency braking.

[0014] This invention provides a safe cutting device for solid wood panels. It has the following beneficial effects:

[0015] 1. This invention adds a braking component and a falling component. At the moment the human body is about to come into contact with the saw blade, the huge pressure generated by the igniter igniting the mixed gas in the cylinder pushes the brake plate against one end of the saw blade to achieve emergency braking of the saw blade. At the same time, the falling mechanism is added. After braking is completed, the supports on both sides of the movable block are released, and it is quickly pulled down by the tension spring. The whole process takes no more than 15 milliseconds, which can greatly avoid the dangers that may occur during operation.

[0016] 2. This invention adds an adjustment mechanism and a dust removal mechanism, which can adjust the position of the backing plate left and right, making it easier to control the cutting size. At the same time, the dust removal mechanism can absorb the dust and debris generated during cutting and collect and purify it using a dust collection box, ensuring the on-site working environment for staff and better meeting the usage requirements. Attached Figure Description

[0017] Figure 1 This is a perspective view of the present invention;

[0018] Figure 2 This is a bottom-view perspective view of the present invention;

[0019] Figure 3 This is a schematic diagram of the structure of the movable block in this invention;

[0020] Figure 4 This is a diagram showing the internal structure of the active block of the present invention;

[0021] Figure 5 This is a schematic diagram of the piston rod in this invention.

[0022] The components include: 1. Workbench; 2. Adjustment mechanism; 201. Slide groove; 202. Slider; 203. Backing plate; 204. Threaded rod; 205. Handwheel; 206. Guide wheel; 207. Scale mark; 3. Dust removal mechanism; 301. Gantry frame; 302. Negative pressure fan; 303. Dust collection box; 304. Filter hole; 305. Metal input pipe; 306. Dust cover; 307. Thermal infrared imager; 4. Straight groove; 5. Vertical plate; 6. Support plate; 7. Guide rod; 8. Movable block; 9. Inner cavity; 10. DC motor; 11. Saw blade; 12. Cylinder; 13. Piston; 14. Piston rod; 15. Return spring; 16. Brake plate; 17. Igniter; 18. Mixed gas; 19. Frame rod; 20. Magnetic plate; 21. Through hole; 22. Frame hole; 23. Tension spring; 24. Support leg. 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] Example:

[0025] Please see the appendix Figure 1 This invention provides a safety cutting device for solid wood boards, including a workbench 1. The top center of the workbench 1 has a straight groove 4 to facilitate the extension of the saw blade 11. The bottom front and rear sides of the workbench 1 are fixedly connected to upright plates 5. The bottom ends of the upright plates 5 are respectively fixedly connected to the top two sides of the support plate 6 for connection and fixation. The surface of the support plate 6 is movably connected to a movable block 8 via four guide rods 7. When the support on both sides is lost, the movable block 8 can slide up and down along the direction of the guide rods 7. The movable block 8 has an inner cavity 9. A DC motor 10 is installed at one end of the movable block 8 to drive the saw blade 11 to rotate. The driving end of the DC motor 10 extends into the inner cavity 9 and is equipped with the saw blade 11, which is the main cutting tool. The top end of the saw blade 11 passes through the inside of the straight groove 4 and extends to the top of the workbench 1. The other end of the movable block 8 is equipped with a braking component for emergency braking. The bottom of the movable block 8 is also equipped with a falling component for retracting the saw blade 11 to the bottom of the workbench 1. Support legs 24 are fixedly connected to the four corners of the bottom of the workbench 1 for support and fixation.

[0026] In this embodiment, please refer to the appendix. Figure 3 - Appendix Figure 5The braking assembly includes a cylinder 12, which is cylindrical and fixedly connected to the middle of the right end of the movable block 8. A piston 13 is movably connected inside the cylinder 12 and can move within it. A piston rod 14 is fixedly connected to the middle of the left end of the piston 13. The piston rod 14 is straight and extends to the interior of the inner cavity 9, where a brake plate 16 is fixedly connected. The inner side of the brake plate 16 has friction grooves and adheres to the end face of the saw blade 11 to complete braking. An igniter 17 is located at the middle of the right end of the cylinder 12 to ignite the mixed gas 18. The interior of the cylinder 12 is filled with the mixed gas 18. The mixed gas 18 is a mixture of air and atomized gasoline in a ratio of 14:1. After being ignited by the igniter 17, similar to the principle of a car engine, the air in the cylinder 12 expands rapidly, which will generate huge pressure in the cylinder 12 and push the piston 13 to the leftmost end of the cylinder 12 in an instant. Both sides of the left end of the piston 13 are connected to the inner wall of the movable block 8 by return springs 15. After braking is completed, the piston 13 returns to its original position. An exhaust valve is installed on the front right end of the cylinder 12, which can discharge the gas in the cylinder 12 after braking is completed. An intake valve is provided on the rear end of the cylinder 12 to compensate for the new mixed gas 18.

[0027] For further details, please refer to the appendix. Figure 2 and in conjunction with the appendix Figure 5 The falling assembly includes two support rods 19, which are movably connected to the front and rear sides of the movable block 8, respectively. They are the main structure for supporting the movable block 8. The inner ends of the support rods 19 are fixedly connected to magnetic plates 20. The magnetic plates 20 are not directly connected to the piston rod 14. The two magnetic plates 20 are placed with opposite orientations. The piston rod 14 has a through hole 21 in the middle. The length and width of the through hole 21 are slightly larger than those of the magnetic plates 20. The upper side of the inner end of the upright plate 5 is provided with support holes 22. The outer ends of the support rods 19 extend into the corresponding side support holes 22. With the cooperation of the support rods 19, the movable block 8 is supported. The bottom ends of the movable block 8 are connected to the top of the support plate 6 by tension springs 23. When the support rods 19 are disengaged from the support holes 22, the movable block 8 loses support and is quickly pulled down and retracted by the tension springs 23.

[0028] Specifically, when a human body approaches the saw blade 11, the thermal infrared imager 307 senses the thermal image of the human body and then quickly sends a signal to an external control terminal. The external control terminal then sends a signal to the igniter 17, which ignites the gas-fuel mixture 18 inside the cylinder 12. Since the gas-fuel mixture 18 is composed of atomized gasoline and air, a strong pressure is generated inside the cylinder 12 at the moment of ignition, which pushes the piston 13 and piston rod 14 to move. This causes the brake plate 16 at the end of the piston rod 14 to contact one end of the saw blade 11, thereby achieving emergency braking of the saw blade 11. The piston rod 14 moves, and the through hole 21 moves accordingly. When the through hole 21 moves to the position of the two magnetic plates 20, the magnetic force between the two magnetic plates 20 attracts them together and drives the two support rods 19 to move inward a short distance, so that the end of the support rod 19 is disengaged from the support hole 22. At this time, the movable block 8 lacks the support on both sides, and the tension spring 23 at the bottom quickly retracts, pulling down the movable block 8 and the saw blade 11. The whole process takes no more than 15 milliseconds, which can greatly avoid the dangers that may occur during operation.

[0029] For further details, please refer to the appendix. Figure 1 and in conjunction with the appendix Figure 2 An adjustment mechanism 2 is provided on one side of the top of the workbench 1. The adjustment mechanism 2 includes a slide groove 201, which is located on the left side of the upper surface of the workbench 1. A slider 202 is movably connected inside the slide groove 201. Two T-shaped slide bars can be installed on the slider 202 to improve stability during movement. The top of the slider 202 is fixedly connected to the middle of the bottom of the backing plate 203 for easy attachment of the plate. The middle part of the slider 202 is threadedly connected to the middle outer diameter of the threaded rod 204. Both outer sides of the threaded rod 204 are mounted on the bottom of the workbench 1 through bearing seats. A handwheel 205 is fixedly connected to the left end of the rod 204. The handwheel 205 is used to drive the threaded rod 204 to rotate, thereby adjusting the position of the back plate 203. The right end of the back plate 203 is movably connected to several guide wheels 206, which changes the sliding friction on one side of the plate to rolling friction, making it easier to move the plate. The upper surface of the worktable 1 is also equipped with a scale 207 on the front side for easy observation of the position of the plate and the back plate 203. It should be noted that since the guide wheels 206 protrude from the end face of the back plate 203, the position of the right end of the guide wheels 206 should be used as a reference.

[0030] For further details, please refer to the appendix. Figure 1A dust removal mechanism 3 is provided at the rear top of the workbench 1. The dust removal mechanism 3 includes a gantry frame 301, which is fixedly connected to the rear top of the workbench 1 for connection and fixation. A negative pressure fan 302 is installed at the middle of the top of the gantry frame 301 to facilitate the removal of dust and debris generated during cutting. The input end of the negative pressure fan 302 extends to the top of the saw blade 11 through a metal input pipe 305 and is fixedly connected to a dust cover 306 to shield the dust and debris and prevent them from splashing. A thermal infrared imager 307 is installed at the middle of the front end of the gantry frame 301 through a bracket to distinguish between human bodies and wood using infrared thermal imaging. A dust collection box 303 is fixedly connected to the output end of the negative pressure fan 302 to collect dust and debris. Several filter holes 304 are evenly provided on the right end of the dust collection box 303 for filtration.

[0031] Working Principle: First, one end of the solid wood board is placed against the right end of the backing plate 203. Then, by rotating the handwheel 205, the threaded rod 204 is rotated. Using the limiting position of the slide groove 201, the slider 202 and the backing plate 203 are moved left and right. The required cutting position of the board is adjusted by observing the scale mark 207. Then, the DC motor 10 is turned on, which drives the saw blade 11 to start rotating at high speed. The operator presses both hands on the surface of the board and pushes it forward until the board contacts and passes through the saw blade 11, thus completing the cutting action. During the cutting process, the dust cover 306 blocks the dust and debris generated during cutting. At the same time, the negative pressure fan 302 is turned on, and the dust and debris are sucked into the dust collection box 303 through the metal input pipe 305. After being filtered by the filter hole 304, clean air is discharged. When a person approaches the saw blade 11, the thermal infrared imager 307 will sense the thermal image of the person and then quickly send the signal to the external control terminal. The signal is then sent to the igniter 17, which ignites the gas-fuel mixture 18 in the cylinder 12. Since the gas-fuel mixture 18 is composed of atomized gasoline and air, a strong pressure is generated inside the cylinder 12 at the moment of ignition, which pushes the piston 13 and piston rod 14 to move. This causes the brake plate 16 at the end of the piston rod 14 to contact one end of the saw blade 11, achieving an emergency braking effect on the saw blade 11. At the same time, as the piston rod 14 moves, the through hole 21 moves with it. When the through hole 21 moves to the position of the two magnetic plates 20, the magnetic force between the two magnetic plates 20 attracts them together and drives the two support rods 19 to move inward a short distance, causing the ends of the support rods 19 to detach from the support hole 22. At this time, the movable block 8 lacks the support on both sides, and the tension spring 23 at the bottom quickly retracts, pulling down the movable block 8 and the saw blade 11. The whole process takes no more than 1 / 15 of a second, which can greatly avoid the dangers that may occur during operation.

[0032] 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 safety cutting device for solid wood boards, comprising a workbench (1), characterized in that, The top center of the workbench (1) is provided with a straight groove (4). The bottom front and rear sides of the workbench (1) are fixedly connected with upright plates (5). The bottom of the upright plates (5) are fixedly connected to the top two sides of the support plate (6). The surface of the support plate (6) is movably connected to a movable block (8) through four guide rods (7). The movable block (8) is provided with an inner cavity (9). One end of the movable block (8) is equipped with a DC motor (10). The drive end of the DC motor (10) extends into the inner cavity (9) and is equipped with a saw blade (11). The top of the saw blade (11) penetrates the inside of the straight groove (4) and extends to the top of the workbench (1). The other end of the movable block (8) is provided with a braking component. The bottom of the movable block (8) is also provided with a falling component. The four corners of the bottom of the workbench (1) are fixedly connected with support legs (24). The braking assembly includes a cylinder (12), which is fixedly connected to the middle of the right end of the movable block (8). A piston (13) is movably connected inside the cylinder (12). A piston rod (14) is fixedly connected to the middle of the left end of the piston (13). The end of the piston rod (14) extends into the interior of the inner cavity (9) and is fixedly connected to a brake plate (16). An igniter (17) is provided at the middle of the right end of the cylinder (12). The cylinder (12) is filled with a mixed gas (18), which is a mixture of air and atomized gasoline in a ratio of 14:

1. The top rear side of the workbench (1) is provided with a dust removal mechanism (3). The dust removal mechanism (3) includes a gantry frame (301). The gantry frame (301) is fixedly connected to the top rear side of the workbench (1). A negative pressure fan (302) is installed in the middle of the top of the gantry frame (301). The input end of the negative pressure fan (302) extends to the top of the saw blade (11) through a metal input pipe (305) and is fixedly connected with a dust cover (306). A thermal infrared imager (307) is installed in the middle of the front end of the gantry frame (301) through a bracket. The falling assembly includes two support rods (19), which are movably connected to the front and rear sides of the movable block (8). The inner ends of the support rods (19) are fixedly connected to magnetic plates (20). The piston rod (14) has a through hole (21) in the middle. The upper side of the inner end of the upright plate (5) is provided with support holes (22). The outer ends of the support rods (19) extend into the interior of the corresponding support holes (22). The bottom sides of the movable block (8) are connected to the top of the support plate (6) by tension springs (23).

2. The solid wood board safety cutting device according to claim 1, characterized in that, An adjustment mechanism (2) is provided on one side of the top of the workbench (1). The adjustment mechanism (2) includes a slide groove (201). The slide groove (201) is located on the left side of the upper surface of the workbench (1). A slider (202) is movably connected inside the slide groove (201). The top of the slider (202) is fixedly connected to the middle of the bottom of the backing plate (203).

3. The solid wood board safety cutting device according to claim 2, characterized in that, The middle part of the slider (202) is threadedly connected to the middle outer diameter of the threaded rod (204). The left end of the threaded rod (204) is fixedly connected to a handwheel (205). The right end of the back plate (203) is movably connected to several guide wheels (206). The front side of the upper surface of the worktable (1) is also provided with a scale mark (207).

4. The solid wood board safety cutting device according to claim 1, characterized in that, The output end of the negative pressure fan (302) is fixedly connected to a dust collector (303), and the right end of the dust collector (303) is evenly provided with a number of filter holes (304).

5. A safety cutting device for solid wood panels according to claim 1, characterized in that, The piston (13) is connected to the inner wall of the movable block (8) on both sides of its left end by a return spring (15). An exhaust valve is installed on the front right end of the cylinder (12), and an intake valve is provided on the rear rear end of the cylinder (12).

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