A laser cutting device and method for furniture board

Abstract

The application relates to a laser cutting device and method for furniture plates, belonging to the technical field of laser cutting machines, which comprises a machining table, a crossbeam arranged on the machining table, a laser head arranged on the crossbeam, the laser head being slidingly arranged on the crossbeam and sliding along the length direction of the crossbeam, and a driving device for driving the crossbeam to slide and driving the laser head to slide to cut the plate; a protective cover is arranged on the laser head, the protective cover is made of transparent material, a shielding piece is arranged in the protective cover, the shielding piece is used for forming a shielding barrier in the protective cover to weaken the light intensity; the protective cover is slidingly arranged in the laser head body, the protective cover is vertically slidingly accommodated in the laser head body, the bottom wall and the side wall close to the bottom wall of the protective cover are provided with grinding sandpaper, the protective cover is rotationally arranged in the laser head body, and the laser head body is provided with a first driving piece for driving the protective cover to rotate. The application has the effect of improving the laser cutting safety.

Description

Technical Field

[0001] This application relates to the field of laser cutting machine technology, and in particular to a laser cutting device and method for furniture panels. Background Technology

[0002] Laser cutting machines are mainly used to cut sheet metal into workpieces of the required shape. They are devices that use the thermal energy of a laser beam to achieve cutting. Laser cutting uses the energy released when a laser beam irradiates the surface of a workpiece to melt and evaporate the workpiece, thereby achieving the purpose of cutting and engraving. It has the characteristics of high precision, fast cutting, no limitation on cutting patterns, automatic layout to save materials, smooth cuts, and low processing costs. It will gradually improve or replace traditional cutting process equipment.

[0003] However, laser cutting of sheet metal poses significant risks to the eyes of operators. This is because laser cutting generates direct beam radiation (lasers are high-energy-density parallel light; the eye's lens focuses it onto the retina, forming a tiny spot, increasing the energy density tens of thousands of times. Even low-power lasers are enough to instantly burn retinal photoreceptor cells, causing permanent, irreversible blindness or visual field defects), and diffuse reflection damage (although the energy of diffuse reflection is lower than the direct beam, it is still very strong. Long-term or frequent exposure to diffuse reflection lasers can also lead to cumulative retinal damage). Infrared laser burns (because the light is invisible, the human eye does not have an instinctive blinking or avoidance reaction. When carbon dioxide lasers irradiate the cornea, they are absorbed by the water on its surface, causing corneal burns, blistering, and clouding, resulting in severe pain and blurred vision. The diffuse reflection light of fiber lasers can penetrate the eyeball and directly affect the retina.) and ultraviolet light damage (long-term exposure may lead to photokeratitis (like welding burns), with symptoms including eyelid redness and swelling, conjunctival congestion, severe pain, photophobia, and tearing. Long-term exposure can also accelerate lens aging, leading to cataracts).

[0004] In addition, because the initial raw material area of ​​furniture boards is relatively large, furniture board factories often use flatbed laser cutting machines directly, making it difficult to add protective covers, resulting in relatively poor protection for operators. Summary of the Invention

[0005] To improve the safety of laser cutting, this application provides a laser cutting device and method for furniture panels.

[0006] Firstly, this application provides a laser cutting device for furniture panels, which adopts the following technical solution:

[0007] A laser cutting device for furniture panels includes a processing table, a crossbeam on the processing table, a laser head on the crossbeam, the laser head being slidably mounted on the crossbeam and sliding along the length of the crossbeam, the crossbeam being slidably mounted on the processing table, and a driving device for driving the crossbeam to slide and driving the laser head to slide to cut the panel.

[0008] The laser head is equipped with a protective cover made of transparent material, and a shielding component is provided inside the protective cover to form a shielding barrier inside the protective cover to reduce the light intensity.

[0009] The protective cover is slidably disposed within the laser head body. The protective cover slides vertically and is housed within the laser head body. The bottom wall and the side wall near the bottom wall of the protective cover are both provided with sandpaper. The protective cover is rotatably disposed within the laser head body. The laser head body is provided with a first driving member for driving the protective cover to rotate.

[0010] Optionally, the protective cover has a cavity inside, which is circumferentially opened along the axis of the protective cover. The inner wall of the cavity has a mounting groove, the bottom wall of which faces the axis of the protective cover. The shielding component includes a take-up shaft rotatably disposed in the mounting groove and a shielding cloth wound on the take-up shaft. The take-up shaft is vertically arranged. The shielding component also includes an unwinding component, which is used to pull the free end of the shielding cloth around the inner wall of the cavity.

[0011] Optionally, the unwinding component includes an unwinding shaft rotatably disposed in the mounting groove, the unwinding shaft being located on one side of the take-up shaft and the length direction of the take-up shaft being parallel to the length direction of the unwinding shaft, a pull rope being wound on the unwinding shaft, and the unwinding component further includes an intermediate plate disposed at the free end of the shielding cloth, the pull rope being fixedly disposed on the intermediate plate.

[0012] Optionally, the shielding cloth is made of transparent material and coated with a light-shielding paint. The shielding cloth is divided into multiple light-shielding areas, which are evenly arranged along the length of the shielding cloth. The light-shielding paint is applied to the light-shielding areas, and the concentration of the light-shielding paint gradually increases along the unwinding direction of the shielding cloth. The width of the light-shielding area is greater than or equal to the circumference of the inner wall of the cavity. By adjusting the light-shielding area surrounding the inner wall of the cavity, it can be used to observe the cutting of the plate or to block the light generated by the laser head.

[0013] Optionally, the shielding component further includes a T-shaped plate, which is fixedly disposed in the mounting groove. The vertical plate of the T-shaped plate is located between the unwinding shaft and the rewinding shaft, and the horizontal plate of the T-shaped plate spans the mounting groove and blocks the opening of the mounting groove.

[0014] Optionally, an annular tube is provided inside the protective cover, the annular tube surrounds the cutting head of the laser head, the outer ring of the annular tube abuts against the inner wall of the protective cover, the annular tube is hollow, and dust suction ports are provided on the bottom wall, inner ring and top wall of the annular tube, and an air outlet is provided on the top wall of the annular tube, the air outlet is moved out through the side wall of the protective cover, and a miniature air pump is provided inside the annular tube, the miniature air pump is used to suck up the smoke and dust inside the protective cover and discharge it through the air outlet.

[0015] Optionally, a lead screw is rotatably installed inside the protective cover, the length direction of the lead screw is parallel to the axial direction of the protective cover, the annular pipe is threaded onto the lead screw, a micro motor is installed inside the protective cover, the lead screw is coaxially mounted on the output shaft of the micro motor, and the air outlet pipe is a corrugated pipe.

[0016] Optionally, the bottom wall of the laser head body has an inwardly facing mounting cavity, and the protective cover is slidably disposed in the mounting cavity. The first driving component includes a driving motor disposed at the bottom of the laser head body, and a driving wheel is disposed on the output shaft of the driving motor. The outer wall of the protective cover abuts against the driving wheel to drive the protective cover to rotate. A miniature push rod is disposed on the laser head body and located in the mounting cavity. The upper end face of the protective cover is disposed on the miniature push rod and rotatably connected to the output shaft of the miniature push rod.

[0017] Optionally, cooling water is injected into the cavity, and the liquid level of the cooling water is located in the middle of the cavity. When the protective cover rotates at high speed to grind the cutting seam of the plate, the cooling water flows towards the outer wall of the cavity under the action of centrifugal force and adheres to the outer wall of the cavity, so that the inner side of the cooling water is separated from the inner wall of the cavity, thus forming a vacuum environment.

[0018] Secondly, this application provides a method for laser cutting furniture panels, which adopts the following technical solution:

[0019] A method for laser cutting furniture panels, using laser cutting equipment, and further comprising:

[0020] S1: When cutting the plate, first place the plate on the processing table, then adjust the position of the crossbeam through the drive device so that the crossbeam is on the horizontal line of the cutting zero point, and then adjust the position of the laser head so that the laser head is on the cutting zero point of the plate.

[0021] S2: The laser head then moves toward the plate and approaches the plate. The protective cover is then pushed against the plate by a micro push rod, and the laser head is then activated to cut the plate.

[0022] S3: Rotate the unwinding shaft again. The unwinding shaft winds up the pull rope, which in turn moves the shielding cloth around the inner wall of the cavity. The shielding cloth blocks the strong light generated by laser cutting. When it is necessary to observe the cutting phenomenon of the plate, rotate the winding shaft. The winding shaft rotates to wind up the shielding cloth and adjusts the light-blocking area around the cavity so that the light-transmitting shielding area surrounds the inner wall of the cavity, allowing observation of the cutting phenomenon of the plate.

[0023] S4: During laser cutting, a micro air pump is activated, which draws the fumes from inside the protective cover into the annular tube and then exhausts them from the protective cover through the exhaust pipe. Simultaneously, a micro motor is activated, which drives the lead screw to rotate. The rotation of the lead screw causes the annular tube to move back and forth inside the protective cover, thereby drawing out the fumes from inside the protective cover. At the same time, the sliding annular tube scrapes off the fumes adhering to the inner wall of the protective cover, thereby improving the light transmittance of the protective cover.

[0024] S5: Then start the drive motor, which drives the drive wheel to rotate. The rotation of the drive wheel drives the protective cover to rotate. The rotation of the protective cover grinds the cutting edge of the plate and the slag on the plate to improve the cutting quality of the plate and facilitate the movement of the protective cover on the plate. When the protective cover rotates at high speed, the cooling water is pressed against the outer wall of the cavity under the action of centrifugal force. A vacuum environment is formed between the cooling water and the inner wall of the cavity, which realizes the sound insulation environment and reduces the cutting noise.

[0025] The technical solution of this application has at least the following advantages and beneficial effects:

[0026] 1. During sheet metal cutting, the sheet metal is first placed on the processing table. Then, the position of the crossbeam is adjusted by the drive device so that the crossbeam is on the horizontal line of the cutting zero point. Next, the position of the laser head is adjusted so that the laser head is located at the cutting zero point of the sheet metal. The laser head then cuts the sheet metal. During the cutting process, the strong light generated by the laser is blocked by the shielding component surrounding the inner wall of the cavity, thus reducing the impact of the strong light on the operator. When it is necessary to observe the cutting status of the sheet metal, the light-shielding area surrounding the inner wall of the cavity is adjusted so that the light-shielding area with a lower concentration of light-shielding paint surrounds the inner wall of the cavity, thereby reducing the brightness of the light passing through the protective cover. This facilitates the observation of the cutting status of the sheet metal while reducing the impact of light on the operator, thereby improving the safety of sheet metal cutting.

[0027] 2. When the protective cover blocks the laser beam, the drive motor is activated to rotate the protective cover. The rotation of the protective cover drives the sandpaper to rotate, and the sandpaper polishes the slag produced during the cutting of the plate, thereby improving the cutting quality of the plate and reducing the impact of the slag on the movement of the protective cover, thus facilitating the cutting operation of the plate. Attached Figure Description

[0028] To more clearly illustrate the technical solutions of the embodiments of this application, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this application and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0029] Figure 1 This is a schematic diagram of the overall structure of a laser cutting equipment for furniture panels according to an embodiment of this application;

[0030] Figure 2 This is a schematic diagram of the structure of a laser head used in a laser cutting equipment for furniture panels according to an embodiment of this application;

[0031] Figure 3 This is a cross-sectional view of a laser head used in a laser cutting equipment for furniture panels according to an embodiment of this application;

[0032] Figure 4 yes Figure 3 An enlarged schematic diagram of part A in the middle;

[0033] Figure 5 This is a cross-sectional view of a protective cover used in a laser cutting equipment for furniture panels according to an embodiment of this application;

[0034] Figure 6 yes Figure 5 Enlarged schematic diagram of part B;

[0035] Figure 7 This is a schematic diagram of the internal structure of a protective cover in a laser cutting equipment for furniture panels, according to an embodiment of this application.

[0036] Icons: 1. Processing table; 2. Crossbeam; 3. Laser head; 4. Drive unit; 5. Protective cover; 6. Shielding component; 7. Cavity; 8. Mounting slot; 9. Rewinding shaft; 10. Shielding cloth; 11. Unwinding shaft; 12. Pull rope; 13. Intermediate plate; 14. Shielding area; 15. Circular tube; 16. Air outlet duct; 17. Lead screw; 18. Micro motor; 19. Mounting cavity; 20. Drive motor; 21. Drive wheel; 22. Micro push rod. Detailed Implementation

[0037] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. The components of the embodiments of this application described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0038] Therefore, the following detailed description of the embodiments of this application provided in the accompanying drawings is not intended to limit the scope of the claimed application, but merely to illustrate selected embodiments of the application. All other embodiments obtained by those skilled in the art based on the embodiments of this application without inventive effort are within the scope of protection of this application.

[0039] The following detailed description, in conjunction with specific embodiments, further illustrates that this application discloses a laser cutting device for furniture panels, referring to... Figure 1 The system includes a processing table 1, a crossbeam 2 mounted on the processing table 1, a laser head 3 mounted on the crossbeam 2, and the laser head 3 slidably mounted on the crossbeam 2. The laser head 3 slides along the length of the crossbeam 2, and the crossbeam 2 is slidably mounted on the processing table 1. It also includes a drive device 4 for driving the crossbeam 2 and the laser head 3 to slide and cut the sheet metal. The drive device 4 includes a servo motor and a ball screw. The crossbeam 2 is threadedly connected to the ball screw, and the ball screw is coaxially mounted on the servo motor. Furthermore, the laser head 3 is threadedly connected to the ball screw, and the ball screw... The laser head 3 is coaxially mounted on the output shaft of the servo motor. When adjusting the position of the laser head 3, the servo motors on the processing table 1 and the crossbeam 2 are started respectively. The servo motors drive the ball screw to rotate, which in turn moves the crossbeam 2 on the processing table 1 and the laser head 3 on the crossbeam 2, so that the laser head 3 is located at the zero point of the plate. Furthermore, a hydraulic cylinder is installed on the crossbeam 2, and the laser head 3 is mounted on the piston rod of the hydraulic cylinder. The hydraulic cylinder drives the laser head 3 to move toward the plate, thereby adjusting the distance between the laser head 3 and the plate for plate cutting.

[0040] Reference Figure 2 and Figure 3 To reduce the harm to operators and improve the safety of laser cutting, a protective cover 5 is installed on the laser head 3. The protective cover 5 is made of transparent materials, such as ALN transparent ceramic, silicon nitride ceramic, sapphire glass, quartz glass, etc. A shielding component 6 is installed inside the protective cover 5. The shielding component 6 is used to form a shielding barrier inside the protective cover 5 to reduce the light intensity. During the plate cutting process, the shielding component 6 forms a shield inside the protective cover 5 to block the light generated by laser cutting, thereby reducing the impact of light on the operator and improving the safety of laser cutting.

[0041] Reference Figure 3 and Figure 4In this embodiment, the protective cover 5 has a cavity 7 inside, which is circumferentially opened along the axis of the protective cover 5. The inner wall of the cavity 7 has a mounting groove 8, and the bottom wall of the mounting groove 8 faces the axis of the protective cover 5. The shielding member 6 includes a take-up shaft 9 rotatably disposed in the mounting groove 8 and a shielding cloth 10 wound on the take-up shaft 9. The take-up shaft 9 is vertically arranged and rotatably disposed in the mounting groove 8. Further, a first motor is disposed in the mounting groove 8, and the take-up shaft 9 is coaxially disposed on the output shaft of the first motor. The shielding member 6 also includes an unwinding member, which is used to pull the free end of the shielding cloth 10 around the inner wall of the cavity 7.

[0042] Reference Figure 5 and Figure 6 The unwinding component includes an unwinding shaft 11 rotatably disposed in the mounting groove 8. Further, a second motor is disposed in the mounting groove 8. The unwinding shaft 11 is coaxially disposed on the output shaft of the second motor. The unwinding shaft 11 is located on one side of the take-up shaft 9 and the length direction of the take-up shaft 9 is parallel to the length direction of the unwinding shaft 11. A pull rope 12 is wound on the unwinding shaft 11. The unwinding component also includes an intermediate plate 13 disposed at the free end of the shielding cloth 10. The pull rope 12 is fixedly disposed on the intermediate plate 13.

[0043] When cutting the sheet metal, the first motor and the second motor are started respectively. The second motor drives the unwinding shaft 11 to rotate, and the unwinding shaft 11 winds up the pull rope 12. The winding of the pull rope 12 causes the shielding cloth 10 to surround the inner wall of the cavity 7, thereby blocking the light generated by laser cutting and improving the safety of laser cutting.

[0044] Reference Figure 3 and Figure 5 Under the action of the shielding cloth 10, the light generated by laser cutting is blocked, which improves the safety of plate cutting. However, the operator cannot observe the distance between the laser head 3 and the plate, and therefore cannot obtain the best cutting distance or observe the cutting status of the plate. Therefore, in this embodiment, the shielding cloth 10 is made of transparent material and coated with a light-shielding paint. The light-shielding paint is made of black waterproof paint. The shielding cloth 10 is divided into multiple light-shielding areas 14, which are evenly arranged along the length of the shielding cloth 10. The light-shielding paint is applied to the light-shielding areas 14. The concentration of the light-shielding paint gradually increases along the unwinding direction of the shielding cloth 10. The width of the light-shielding area 14 is greater than or equal to the circumference of the inner wall of the cavity 7. The light-shielding area 14 surrounding the inner wall of the cavity 7 can be adjusted to observe the cutting status of the plate or to block the light generated by the laser head 3.

[0045] Before the laser head 3 is started, the first and second motors drive the unwinding shaft 11 and the rewinding shaft 9 to rotate, pulling the shielding cloth 10 around the inner wall of the cavity 7. This ensures that the light-shielding area 14, which provides both good light transmission and protection, surrounds the inner wall of the cavity 7. The operator observes the cutting process of the laser head 3 through the protective cover 5 and the shielding cloth. When the cutting effect of the laser head 3 is optimal, the first and second motors are used to adjust the position of the light-transmitting area of ​​the shielding cloth 10, ensuring that the light-transmitting area with the best blocking effect surrounds the inner wall of the cavity 7, thus obstructing the light generated by the laser cutting. When the operator needs to observe the cutting status of the material, the corresponding light-transmitting area is adjusted to surround the inner wall of the cavity 7, allowing the operator to observe the cutting status of the material in the best possible condition.

[0046] Reference Figure 5 and Figure 6 In this embodiment, because there is a gap between the take-up shaft 9 and the unwind shaft 11, the light generated by cutting the sheet metal will pass through the gap, resulting in a relatively poor blocking effect of the shielding cloth 10. Therefore, the shielding component 6 also includes a T-shaped plate, which is fixedly installed in the mounting groove 8. The vertical plate of the T-shaped plate is located between the unwind shaft 11 and the take-up shaft 9, and the horizontal plate of the T-shaped plate spans across the mounting groove 8 and blocks the opening of the mounting groove 8. Under the action of the T-shaped plate, the gap between the take-up shaft 9 and the unwind shaft 11 is blocked, thereby cutting off the transmission path of the light and improving the blocking effect of the light.

[0047] Reference Figure 7 During the cutting process of the sheet metal, a lot of smoke and dust are generated. When the smoke and dust adhere to the protective cover 5, the transparency of the protective cover 5 is relatively poor, making it difficult to observe the cutting status of the sheet metal. Therefore, in this embodiment, an annular tube 15 is provided inside the protective cover 5. The annular tube 15 is connected end to end to form a ring shape, and the cross-section of the protective cover 5 is rectangular. The annular tube 15 surrounds the cutting head of the laser head 3. The outer ring of the annular tube 15 abuts against the inner wall of the protective cover 5. The annular tube 15 is hollow. Dust suction ports are provided on the bottom wall, inner ring and top wall of the annular tube 15. An air outlet 16 is provided on the top wall of the annular tube 15. The air outlet 16 moves out through the side wall of the protective cover 5. A micro air pump is provided inside the annular tube 15. The micro air pump is used to suck up the smoke and dust inside the protective cover 5 and discharge it through the air outlet 16.

[0048] When cutting the sheet metal, the micro air pump is started. The micro air pump draws the dust from the protective cover 5 into the annular pipe 15 through the dust suction port, and then discharges it through the air outlet pipe 16. This reduces the dust in the protective cover 5 and makes it easier to observe the operating status of the laser head 3 and the cutting status of the sheet metal.

[0049] Reference Figure 7When the smoke and dust are discharged through the micro air pump, some of the smoke and dust will adhere to the protective cover 5 and cannot be removed by the airflow. Therefore, in this embodiment, a lead screw 17 is rotatably installed inside the protective cover 5. The length direction of the lead screw 17 is parallel to the axis of the protective cover 5. An annular tube 15 is threadedly connected to the lead screw 17. A micro motor 18 is installed inside the protective cover 5. The lead screw 17 is coaxially installed on the output shaft of the micro motor 18. The air outlet duct 16 is a corrugated pipe. When the micro air pump is started, the micro motor 18 is started. The micro motor 18 drives the lead screw 17 to rotate. The rotation of the lead screw 17 drives the annular tube 15 to move inside the protective cover 5. During the movement of the annular tube 15, the smoke and dust on the inner wall of the protective cover 5 are scraped off and fall onto the plate, thereby improving the light transmission effect of the protective cover 5. Furthermore, a sponge strip is provided on the outer ring of the annular tube 15, and the sponge strip abuts against the inner wall of the protective cover 5.

[0050] Reference Figure 2 and Figure 3 In this embodiment, the protective cover 5 is slidably disposed within the laser head 3 body. The protective cover 5 slides vertically and is housed within the laser head 3 body. Abrasive paper is provided on the bottom wall and the side wall near the bottom wall of the protective cover 5. The protective cover 5 is rotatably disposed within the laser head 3 body. A first driving member for driving the protective cover 5 to rotate is provided within the laser head 3 body. When the laser head 3 cuts the plate, molten slag is generated on the plate due to high-temperature melting. The molten slag is trapped inside the protective cover 5. When the protective cover 5 moves, the molten slag will hinder the movement of the protective cover 5, thus hindering the movement of the laser head 3. Therefore, when the plate is cut, the first driving member drives the protective cover 5 to rotate. The rotation of the protective cover 5 drives the abrasive paper to rotate. The abrasive paper polishes the generated molten slag, so that the cut surface of the plate is in a flat state, which facilitates the movement of the protective cover 5 on the plate.

[0051] Reference Figure 2 and Figure 3 In this embodiment, the bottom wall of the laser head 3 body has an inwardly facing mounting cavity 19, and the protective cover 5 is slidably disposed in the mounting cavity 19. The first driving component includes a driving motor 20 disposed at the bottom of the laser head 3 body, and a driving wheel 21 disposed on the output shaft of the driving motor 20. Further, a driving gear is sleeved on the driving wheel 21. The outer wall of the protective cover 5 is provided with a long strip-shaped toothed groove, and the driving gear meshes with the toothed groove. A miniature push rod 22 is disposed on the laser head 3 body and located in the mounting cavity 19. The upper end face of the protective cover 5 is disposed on the miniature push rod 22 and rotatably connected to the output shaft of the miniature push rod 22. During the process of the laser head 3 cutting the plate, the miniature push rod 22 is first activated to push the protective cover 5 toward the plate and abut against the plate. Then, the driving motor 20 is activated, and the driving motor 20 drives the driving wheel 21 to rotate. The rotation of the driving wheel 21 drives the driving gear to rotate, and the rotation of the driving gear drives the protective cover to rotate. The rotation of the protective cover 5 polishes the molten slag. The operation is simple and convenient.

[0052] Reference Figure 2 and Figure 3 In this embodiment, because the temperature of laser cutting is high, the temperature of the protective cover 5 is also high, which can easily lead to damage to the protective cover 5. Therefore, cooling water is injected into the cavity 7. Under the action of cooling water, the protective cover 5 is cooled down, thereby extending the service life of the protective cover 5. Furthermore, the light-shielding coating is a waterproof coating.

[0053] Reference Figure 2 and Figure 3 Furthermore, to reduce the impact of laser cutting noise on operators, the cooling water level is located in the middle of cavity 7. When the protective cover 5 rotates at high speed to grind the cutting seam of the plate, the cooling water flows towards the outer wall of cavity 7 under the action of centrifugal force and adheres to the outer wall of cavity 7, so that the inner side of the cooling water is separated from the inner wall of cavity 7, thus forming a vacuum environment.

[0054] The implementation principle of a laser cutting equipment for furniture panels according to an embodiment of this application is as follows:

[0055] When adjusting the position of the laser head 3, the servo motors on the processing table 1 and the crossbeam 2 are started respectively. The servo motors drive the ball screw to rotate, which in turn moves the crossbeam 2 on the processing table 1 and the laser head 3 on the crossbeam 2, so that the laser head 3 is located at the processing zero point of the plate. Furthermore, a hydraulic cylinder is set on the crossbeam 2, and the laser head 3 is set on the piston rod of the hydraulic cylinder. The hydraulic cylinder drives the laser head 3 to move toward the plate, thereby adjusting the distance between the laser head 3 and the plate, and performing the plate cutting operation.

[0056] Before the laser head 3 is started, the first and second motors drive the unwinding shaft 11 and the rewinding shaft 9 to rotate, pulling the shielding cloth 10 around the inner wall of the cavity 7. This ensures that the light-shielding area 14, which provides both good light transmission and protection, surrounds the inner wall of the cavity 7. The operator observes the cutting process of the laser head 3 through the protective cover 5 and the shielding cloth. When the cutting effect of the laser head 3 is optimal, the first and second motors are used to adjust the position of the light-transmitting area of ​​the shielding cloth 10, ensuring that the light-transmitting area with the best blocking effect surrounds the inner wall of the cavity 7, thus obstructing the light generated by the laser cutting. When the operator needs to observe the cutting status of the material, the corresponding light-transmitting area is adjusted to surround the inner wall of the cavity 7, allowing the operator to observe the cutting status of the material in the best possible condition.

[0057] This application discloses a method for laser cutting furniture panels, which uses laser cutting equipment and further includes;

[0058] S1: When cutting the plate, first place the plate on the processing table 1, then adjust the position of the crossbeam 2 through the drive device 4 so that the crossbeam 2 is located on the horizontal line of the cutting zero point, and then adjust the position of the laser head 3 so that the laser head 3 is located at the cutting zero point of the plate.

[0059] S2: Then the laser head 3 moves toward the plate and gets close to the plate. Then the micro push rod 22 pushes the protective cover 5 to abut against the plate. Then the laser head 3 is started to cut the plate.

[0060] S3: Rotate the unwinding shaft 11 again. The unwinding shaft 11 winds up the pull rope 12. The pull rope 12 drives the shielding cloth 10 to surround the inner wall of the cavity 7. The shielding cloth 10 blocks the strong light generated by laser cutting. When it is necessary to observe the cutting phenomenon of the plate, rotate the winding shaft 9. The winding shaft 9 rotates to wind up the shielding cloth 10. Adjust the light-blocking area 14 surrounding the cavity 7 so that the light-transmitting shielding area surrounds the inner wall of the cavity 7, and observe the cutting phenomenon of the plate.

[0061] S4: During laser cutting, a micro air pump is activated, which draws the fumes from the protective cover 5 into the annular tube 15 and discharges them from the protective cover 5 through the exhaust pipe 16. Simultaneously, a micro motor 18 is activated, which drives the lead screw 17 to rotate. The rotation of the lead screw 17 causes the annular tube 15 to move back and forth within the protective cover 5, thereby drawing out the fumes from the protective cover 5. At the same time, the sliding annular tube 15 scrapes away the fumes adhering to the inner wall of the protective cover 5, thereby increasing the light transmittance of the protective cover 5.

[0062] S5: Then start the drive motor 20, drive motor 20 drives drive wheel 21 to rotate, drive wheel 21 rotates and drives protective cover 5 to rotate. Protective cover 5 rotates to grind the cutting edge of the plate and grind the slag on the plate to improve the cutting quality of the plate and facilitate the movement of protective cover 5 on the plate. When protective cover 5 rotates at high speed, cooling water is pressed against the outer wall of cavity 7 under the action of centrifugal force. A vacuum environment is formed between cooling water and inner wall of cavity 7, thereby achieving a sound insulation environment and reducing cutting noise.

[0063] 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 laser cutting device for furniture panels, characterized in that: The device includes a processing table (1), on which a crossbeam (2) is provided, and on which a laser head (3) is provided, the laser head (3) is slidably disposed on the crossbeam (2), the laser head (3) slides along the length direction of the crossbeam (2), the crossbeam (2) is slidably disposed on the processing table (1), and also includes a driving device (4) for driving the crossbeam (2) to slide and driving the laser head (3) to slide to cut the plate. The laser head (3) is provided with a protective cover (5), which is made of transparent material. A shielding member (6) is provided inside the protective cover (5), which is used to form a shielding barrier inside the protective cover (5) to reduce the light intensity. The protective cover (5) is slidably disposed within the body of the laser head (3). The protective cover (5) slides vertically and is housed within the body of the laser head (3). The bottom wall and the side wall near the bottom wall of the protective cover (5) are provided with sandpaper. The protective cover (5) is rotatably disposed within the body of the laser head (3). The laser head (3) is provided with a first driving member for driving the protective cover (5) to rotate. The protective cover (5) has a cavity (7) inside, which is circumferentially opened along the axis of the protective cover (5). The inner wall of the cavity (7) has an installation groove (8), the bottom wall of which faces the axis of the protective cover (5). The shielding member (6) includes a take-up shaft (9) rotatably disposed in the installation groove (8) and a shielding cloth (10) wound on the take-up shaft (9). The take-up shaft (9) is vertically arranged. The shielding member (6) also includes an unwinding member, which is used to pull the free end of the shielding cloth (10) around the inner wall of the cavity (7). Cooling water is injected into the cavity (7), and the liquid level of the cooling water is located in the middle of the cavity (7). When the protective cover (5) rotates at high speed to grind the cutting seam of the plate, the cooling water flows towards the outer wall of the cavity (7) under the action of centrifugal force and adheres to the outer wall of the cavity (7), so that the inner side of the cooling water is separated from the inner wall of the cavity (7) to form a vacuum environment.

2. The laser cutting equipment for furniture panels according to claim 1, characterized in that: The unwinding component includes an unwinding shaft (11) rotatably disposed in the mounting groove (8). The unwinding shaft (11) is located on one side of the winding shaft (9), and the length direction of the winding shaft (9) is parallel to the length direction of the unwinding shaft (11). A pull rope (12) is wound on the unwinding shaft (11). The unwinding component also includes an intermediate plate (13) disposed at the free end of the shielding cloth (10). The pull rope (12) is fixedly disposed on the intermediate plate (13).

3. The laser cutting equipment for furniture panels according to claim 2, characterized in that: The shielding cloth (10) is made of transparent material and coated with a light-shielding paint. The shielding cloth (10) is divided into multiple light-shielding areas (14). The light-shielding areas (14) are evenly arranged along the length of the shielding cloth (10). The light-shielding paint is applied to the light-shielding areas (14). The concentration of the light-shielding paint gradually increases along the unwinding direction of the shielding cloth (10). The width of the light-shielding area (14) is greater than or equal to the circumference of the inner wall of the cavity (7). The light-shielding area (14) surrounding the inner wall of the cavity (7) is adjusted to observe the cutting of the plate or to block the light generated by the laser head (3).

4. The laser cutting equipment for furniture panels according to claim 2, characterized in that: The shielding member (6) also includes a T-shaped plate, which is fixedly installed in the mounting groove (8). The vertical plate of the T-shaped plate is located between the unwinding shaft (11) and the winding shaft (9), and the horizontal plate of the T-shaped plate spans the mounting groove (8) and shields the opening of the mounting groove (8).

5. The laser cutting equipment for furniture panels according to claim 1, characterized in that: An annular tube (15) is provided inside the protective cover (5). The annular tube (15) surrounds the cutting head of the laser head (3). The outer ring of the annular tube (15) abuts against the inner wall of the protective cover (5). The annular tube (15) is hollow. Dust suction ports are provided on the bottom wall, inner ring and top wall of the annular tube (15). An air outlet pipe (16) is provided on the top wall of the annular tube (15). The air outlet pipe (16) moves out through the side wall of the protective cover (5). A miniature air pump is provided inside the annular tube (15). The miniature air pump is used to suck up the smoke and dust in the protective cover (5) and discharge it through the air outlet pipe (16).

6. The laser cutting equipment for furniture panels according to claim 5, characterized in that: A lead screw (17) is rotatably installed inside the protective cover (5). The length direction of the lead screw (17) is parallel to the axial direction of the protective cover (5). The annular tube (15) is threadedly connected to the lead screw (17). A micro motor (18) is installed inside the protective cover (5). The lead screw (17) is coaxially installed on the output shaft of the micro motor (18). The air outlet pipe (16) is a corrugated pipe.

7. The laser cutting equipment for furniture panels according to claim 1, characterized in that: The laser head (3) has an inwardly facing mounting cavity (19) on the bottom wall of its body. The protective cover (5) is slidably disposed in the mounting cavity (19). The first driving component includes a drive motor (20) disposed at the bottom of the laser head (3) body. A drive wheel (21) is disposed on the output shaft of the drive motor (20). The outer wall of the protective cover (5) abuts against the drive wheel (21) to drive the protective cover (5) to rotate. A miniature push rod (22) is disposed on the laser head (3) body and located in the mounting cavity (19). The upper end face of the protective cover (5) is disposed on the miniature push rod (22) and rotatably connected to the output shaft of the miniature push rod (22).

8. A method for laser cutting furniture panels, using the laser cutting equipment as described in any one of claims 1-7, characterized in that: Also includes; S1: When cutting the plate, first place the plate on the processing table (1), then adjust the position of the crossbeam (2) through the drive device (4) so ​​that the crossbeam (2) is located on the horizontal line of the cutting zero point, and then adjust the position of the laser head (3) so that the laser head (3) is located at the cutting zero point of the plate. S2: Then the laser head (3) moves toward the plate and approaches the plate, and then pushes the protective cover (5) against the plate through the micro push rod (22), and then starts the laser head (3) to cut the plate; S3: Rotate the unwinding shaft (11) again. The unwinding shaft (11) winds up the pull rope (12). The pull rope (12) drives the shielding cloth (10) to surround the inner wall of the cavity (7). The shielding cloth (10) shields the strong light generated by laser cutting. When it is necessary to observe the cutting phenomenon of the plate, rotate the winding shaft (9). The winding shaft (9) rotates to wind up the shielding cloth (10). Adjust the light-shielding area (14) surrounding the cavity (7) so that the light-transmitting shielding area surrounds the inner wall of the cavity (7) and observe the cutting phenomenon of the plate. S4: During the laser cutting process, the micro air pump is started. The micro air pump draws the smoke and dust inside the protective cover (5) into the annular tube (15) and discharges it from the protective cover (5) through the air outlet (16). At the same time, the micro motor (18) is started. The micro motor (18) drives the lead screw (17) to rotate. The rotation of the lead screw (17) drives the annular tube (15) to move back and forth inside the protective cover (5) to draw out the smoke and dust inside the protective cover (5). At the same time, the annular tube (15) slides to scrape off the smoke and dust attached to the inner wall of the protective cover (5) to improve the light transmittance of the protective cover (5). S5: Then start the drive motor (20), drive motor (20) drives drive wheel (21) to rotate, drive wheel (21) rotates and drives protective cover (5) to rotate, protective cover (5) rotates to grind the cutting edge of the plate, and grind the slag of the plate to improve the cutting quality of the plate and facilitate the movement of protective cover (5) on the plate; when protective cover (5) rotates at high speed, cooling water is pressed against the outer wall of cavity (7) under the action of centrifugal force, and a vacuum environment is formed between cooling water and inner wall of cavity (7) to achieve sound insulation environment and reduce cutting noise.

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