A cutting method and cutting system for a facing panel for integrated construction of new and old building facing layers

Abstract

The application discloses a kind of for new and old building finish layer integration construction's finish panel cutting method and cutting system, belong to building decoration construction technical field, the method includes: making installation bench cutting saw / disc saw table board support frame, install by transparent glass steel made height adjustable shield, shield is fixed on table board by fixed frame and height adjustable;Drive rack is installed on table board;Make mobile platform trolley with wheel, quick tension clamp and drive motor are arranged on trolley, motor output gear is engaged with rack;Plate is fixed on trolley, shield height is adjusted, saw blade and trolley motor are started to complete cutting.The application solves the problems of traditional method, such as hand injury during manual pushing, invisible and non-adjustable shield, poor cutting precision and low efficiency, and has the significant advantages of safety and reliability, precision ≤±3mm, efficiency improvement of more than 70%, and is suitable for on-site cutting of various finish panel materials such as stone, ceramic and wood.

Description

Technical Field

[0001] This invention belongs to the technical field of building decoration and renovation construction, specifically relating to a method and system for cutting decorative panels for integrated construction of new and old building facades. Background Technology

[0002] In architectural decoration and renovation projects, a large number of decorative panels need to be cut and processed on-site to fit different installation locations. Currently, the commonly used cutting methods mainly fall into the following two categories:

[0003] Handheld cutting machine operation: Workers use portable cutting machines to cut along marked lines. While flexible, this method has significant drawbacks: cutting accuracy depends heavily on the worker's skill level, with dimensional deviations often reaching ±5-10mm; the cut surface is prone to chipping and wavy lines; a large amount of dust is generated during the cutting process, harming worker health; and the handheld cutting machine has a strong recoil force, easily causing slippage and injury. Table saw with manual pushing: The board is placed on a fixed table, and the worker pushes it with both hands towards the saw blade to complete the cut. As described in existing technology, the positioning and cutting device for decorative board processing, although equipped with a U-shaped positioning plate and a cutting motor, still requires manual pushing of the board during the cutting process. The operator's hands are extremely close to the saw blade (usually <200mm), and if the board gets stuck or slippery during pushing, fingers can easily be caught in the saw blade, causing serious cutting injuries. Furthermore, most existing cutting saws have an open structure, and the debris or dust generated during cutting permeates the surrounding area, seriously affecting the health of workers and impacting the normal operation of other equipment.

[0004] Existing building decoration panel cutting devices cannot perform curved cuts on panels, often requiring the use of CNC machining, which is cumbersome and inefficient. While some existing technologies use lifting components to drive a synchronous braking device for cutting panels, these methods are structurally complex and fail to simultaneously address the technical challenges of automating panel feeding, providing visual protection for the protective cover, and ensuring adjustable height during the cutting process.

[0005] Traditional protective covers are mostly made of steel or wood, which are bulky and opaque. Workers often remove the covers to observe the cutting line, thus losing their protective function. A few transparent covers are fixed and cannot be adjusted in height according to the thickness of the board, resulting in poor adaptability. Uneven pushing speed and non-straight pushing force by manual workers lead to non-perpendicular cutting surfaces and large dimensional deviations. Secondary trimming is often required after cutting, wasting materials and labor.

[0006] In summary, there is currently no on-site cutting method or system for decorative panels that can simultaneously achieve safety, efficiency, precision, visualization, and adjustable height. In particular, for scenarios involving the integrated renovation of new and old building facades that require the cutting of a large number of irregularly shaped panels, thin panels, thick panels, and other materials of various specifications, a semi-automated, visually adjustable, safe, and reliable cutting solution is urgently needed. Summary of the Invention

[0007] The technical problem to be solved by the present invention is to provide a method and system for cutting decorative panels for integrated construction of new and old building facades, so as to solve the problems mentioned in the background art or achieve better technical effects.

[0008] To solve the above-mentioned technical problems, the inventors, through practice and summarization, derived the technical solution of this invention. This invention discloses a panel cutting system for integrated construction of new and old building facades, comprising:

[0009] The frame consists of a tabletop cutting saw or a tabletop circular saw, which is composed of a tabletop and a support frame. The support frame is welded from δ5 steel plate and 12# channel steel. A 30mm×30mm angle steel is welded at 100mm from the end of the long side of the tabletop as a limit stop.

[0010] Cutting section: The saw blade mounted on the table and the saw blade drive motor that drives the saw blade to rotate;

[0011] Protective cover: A transparent fiberglass protective cover is installed above the saw blade. The protective cover is installed on the table by a fixing frame. The fixing frame is composed of 20mm×20mm square steel tubes and 18mm×18mm square steel tubes. The upright is provided with multiple equally spaced height adjustment holes. The height of the protective cover can be adjusted by bolts engaging with the square holes on the square steel tubes.

[0012] Feed drive section: a 50mm×50mm drive rack fixedly installed on one side of the platform, and a drive motor installed on the mobile platform trolley. A ￠30 steel gear is installed on the output shaft of the drive motor, and the steel gear meshes with the drive rack.

[0013] Mobile platform trolley: The mobile platform trolley is welded from δ5 steel plate and 50mm×50mm angle steel. The bottom of the trolley is equipped with ￠200 steel wheels, and the wheels are equipped with ￠100 bearings. ￠18 round steel bars are welded to the end of the trolley as axles. Quick-release clamps are set on the trolley platform to fix the plate to be cut.

[0014] Control section: An electrical control system that controls the start, stop, and speed adjustment of the saw blade drive motor and the trolley drive motor.

[0015] Furthermore, the transparent fiberglass protective cover is composed of two semi-circular transparent fiberglass covers with a thickness of δ10. The side of the cover has a fixed flange with five equally spaced ￠5 holes drilled on the flange. The four holes on both sides are connected as a whole by ￠4 bolts and nuts. The inner diameter of the cover is 100mm larger than the diameter of the saw blade, and the inner edge of the cover is 50mm away from the edge of the saw blade. The light transmittance of the cover is ≥85%. The fixed frame upright is provided with three equally spaced ￠5 height adjustment holes. With the square holes on the 20mm×20mm square steel tube and ￠4 bolts, the cover can be adjusted in three levels within the height range of 50mm~200mm.

[0016] Furthermore, three ￠4 bolts are welded to the bottom surface of the drive rack, and three equally spaced ￠5 through holes are drilled at corresponding positions on the platform. After the bolts are inserted into the through holes, they are locked and fixed with nuts. The straightness of the rack installation is ≤0.5mm / m. There are four quick-release clamps, which are used to fix the four corners of the plate respectively.

[0017] Furthermore, it also includes a dust removal and suppression device and a safety protection device; the dust removal and suppression device includes dust suction ports set on both sides of the saw blade, the dust suction ports are connected to an industrial vacuum cleaner with a power of ≥3kW through pipes, and a water-cooled spray device set next to the saw blade, with a spray water volume of 0.5~2L / min; the safety protection device includes an emergency stop button set next to the operating position, a mechanical brake device connected to the saw blade, and travel limit switches set at both ends of the trolley feed path. When the emergency stop button is pressed or the trolley triggers the travel limit switch, the saw blade drive motor and the trolley drive motor are simultaneously de-energized, and the mechanical brake device brakes the saw blade to a stop within 2 seconds.

[0018] A method for cutting decorative panels for integrated construction of new and old building facades, comprising the following steps, using any of the cutting systems described above:

[0019] S1: The table support frame is made by welding δ5 steel plate and 12# channel steel. A 30mm×30mm angle steel is welded to the end of the long side of the table 100mm away as a limit block.

[0020] S2: Cut δ10 transparent fiberglass into two semi-circular protective covers and combine them into a transparent fiberglass protective cover. The inner diameter of the protective cover is 100mm larger than the diameter of the saw blade, and the inner edge of the protective cover is 50mm away from the edge of the saw blade. Use 20mm×20mm square steel pipe and 18mm×18mm square steel pipe to weld and make a protective cover fixing frame. Drill three equally spaced height adjustment holes on the upright. Install the protective cover on the table through the fixing frame.

[0021] S3: Drill three equally spaced through holes on the platform and fix the 50mm×50mm drive rack with bolts welded to the bottom to one side of the platform.

[0022] S4: The mobile platform trolley is made of δ5 steel plate and 50mm×50mm angle steel welded together. ￠200 steel wheels are installed at the bottom of the trolley, and ￠18 round steel bars are welded to the end of the trolley as axles. Four quick-release clamps are set on the trolley platform. A drive motor is installed at the bottom of the trolley, and a ￠30 steel gear is installed on the motor output shaft to mesh with the drive rack.

[0023] S5: Remove rust and paint the tabletop support frame and protective cover fixing frame, and connect the power supply for testing;

[0024] S6: Place the board to be cut on the mobile platform trolley. Adjust the height of the guard according to the thickness of the board so that the lower edge of the guard is 5mm~10mm away from the upper surface of the board. Use 4 quick-release clamps to fix the four corners of the board. Start the saw blade drive motor. After the saw blade reaches the rated speed, start the trolley drive motor. The trolley feeds along the rack at a uniform speed to complete the cutting.

[0025] S7: Perform equipment maintenance after cutting is completed.

[0026] Furthermore, in S6, the rated rotation speed of the saw blade is 2800~3500rpm, the trolley feed speed is 0.5~2.0m / min, and the feed speed is adjusted according to the material and thickness of the plate; the height adjustment range of the guard is 50mm~200mm. Through the cooperation of three equally spaced height adjustment holes on the fixed frame upright and the square holes of the 20mm×20mm square steel tube, three-level adjustment of the height of the lower edge of the guard from the table surface is achieved, which are 45mm, 60mm and 95mm respectively, corresponding to the plate thickness of 5mm~50mm.

[0027] Furthermore, in S6, during the cutting operation, a dust removal and dust reduction operation is simultaneously activated: the dust suction ports set on both sides of the saw blade are connected to an industrial vacuum cleaner with a power of ≥3kW through pipes for dust suction, and the water-cooled spray device is activated simultaneously when cutting the stone, with a spray water volume of 0.5~2L / min.

[0028] Furthermore, in S6, during the cutting operation, the safety protection device is activated simultaneously: the emergency stop button next to the operating position, the mechanical brake device connected to the saw blade, and the travel limit switches at both ends of the trolley feed path are in standby mode. When the emergency stop button is pressed or the trolley triggers the travel switch, the saw blade drive motor and the trolley drive motor are simultaneously de-energized, the mechanical brake device brakes the saw blade to a stop within 2 seconds, and an audible and visual alarm is issued simultaneously when the travel limit switch is triggered.

[0029] Furthermore, in S6, the clamping force of the quick-release clamp is such that the plate does not slip and does not produce indentations; the cutting size error of the plate is controlled within ±3mm, and the cutting failure rate is controlled within 5%.

[0030] Furthermore, in S7, the equipment maintenance specifically involves: regularly cleaning, lubricating, and inspecting the fasteners of the table saw or table circular saw, trolley drive motor, drive rack, steel gear, and quick-release clamp, in preparation for the cutting of the next batch of engineering plates.

[0031] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0032] (1) This invention replaces manual pushing by automatically feeding the mobile platform trolley, so that the operator's hands are always away from the saw blade (distance > 500mm). Combined with the physical isolation of the transparent fiberglass cover and multiple safety protection measures such as emergency stop device, travel limit switch, and mechanical brake, the operator is effectively isolated from the cutting area.

[0033] (2) The present invention uses rack and pinion meshing transmission to drive the mobile platform trolley to feed at a uniform speed in a straight line, which replaces the uncontrollable factors such as unstable pushing force, uneven speed, and directional deviation when pushing manually. Combined with the quick-release clamp to fix the plate at four points and the visual observation of the transparent fiberglass cover, the cutting accuracy is qualitatively improved.

[0034] (3) This invention replaces the traditional manual pushing with an automatic feeding system driven by a motor, realizing continuous and uniform cutting; at the same time, the transparent cover does not need to be disassembled, saving the time of frequent disassembly and assembly of the cover; the quick clamping of the fixture shortens the loading and unloading time. The synergistic effect of the three factors significantly improves the cutting efficiency.

[0035] (4) The present invention uses transparent fiberglass material to make a protective cover with a light transmittance of ≥85%, which enables operators to clearly observe the position of the cutting line and the cutting process, and completely solves the safety hazards of traditional steel or wooden protective covers blocking the view and workers removing the protective cover without authorization to observe the cutting line. Attached Figure Description

[0036] Figure 1 This is a schematic diagram of the facade structure of a method for cutting decorative panels for integrated construction of new and old building facades, as proposed in this invention.

[0037] Figure 2 This is a planar top view of a method for cutting decorative panels for integrated construction of new and old building facades, as proposed in this invention.

[0038] Figure label:

[0039] 1. Thickness δ10, transparent fiberglass with fixed flanges on the sides (protective cover material);

[0040] 2. Tabletop cutting saw / tabletop circular saw;

[0041] 3. 30mm×30mm angle steel (limiting component);

[0042] 4. ￠100 bearing;

[0043] 5. δ5 steel plate (platform and trolley panel);

[0044] 6. ￠4 bolts and nuts;

[0045] 7. 50mm×50mm angle steel (carriage frame);

[0046] 8. Saw blade drive motor;

[0047] 9. ￠50 round steel bar (support frame wheel axle);

[0048] 10. ￠18 round steel bar (small wheel axle);

[0049] 11 and 12 channel steel (main beams of the support frame);

[0050] 12. Mobile platform vehicle;

[0051] 13. 20mm×20mm square steel pipe (upper crossbeam of the fixing frame);

[0052] 14. 18mm×18mm square steel pipe (fixed frame uprights);

[0053] 15. ￠200 steel wheels;

[0054] 16. ￠20 bearing;

[0055] 17. Car drive motor;

[0056] 18. 50mm×50mm drive rack;

[0057] 19. ￠30 steel gears;

[0058] 20. Quick-release clamp;

[0059] 21. Ground;

[0060] 22. Forklift;

[0061] 23. Boards to be cut (wood / flooring / stone);

[0062] 24. Transparent fiberglass protective cover;

[0063] 25. Protective cover fixing bracket;

[0064] 26. Tabletop support frame;

[0065] 27. Tabletop;

[0066] 28. Saw blade. Detailed Implementation

[0067] To make the above-mentioned objectives, features and advantages of the present invention more apparent and understandable, the specific embodiments of the present invention will be described in detail below with reference to specific examples.

[0068] Example 1

[0069] like Figure 1 , Figure 2 As shown, a panel cutting system for integrated construction of new and old building cladding layers includes a frame section, a cutting section, a protective cover section, a feed drive section, a mobile platform trolley section, and a control section.

[0070] The frame consists of a table 27 and a support frame 26. The support frame 26 uses δ5 steel plate 5 as the table panel and 12# channel steel 11 with lengths of 3000mm and 1800mm as the supporting skeleton, connected by welding to form an integral frame structure. The table 27 measures 3000mm × 1800mm, with a flatness error controlled within ±2mm to ensure stable material movement during cutting. A 30mm × 30mm angle steel 3 is welded 100mm from the long side of the table 27; this angle steel serves as a limit stop for the moving platform trolley 12, preventing the trolley from exceeding its travel range during feeding.

[0071] The cutting section is mounted on the table 27 and includes a saw blade 28 and a saw blade drive motor 8 that drives the saw blade to rotate. The specifications of the saw blade 28 are selected according to the material of the material to be cut: a ￠350mm diamond saw blade is used for cutting natural stone, and a ￠250mm~￠300mm carbide saw blade is used for cutting wood. The saw blade drive motor 8 is a three-phase asynchronous motor with a power of 5.5kW~7.5kW, which drives the saw blade to rotate through belt drive or direct drive.

[0072] The protective cover, located above the saw blade 28, includes a transparent fiberglass cover 24 and a mounting bracket 25. The transparent fiberglass cover 24 is made of δ10mm thick transparent fiberglass material with a light transmittance ≥85%, ensuring clear observation of the cutting process by the operator while also providing sufficient impact resistance. The mounting bracket 25 is welded from 20mm×20mm square steel tubes 13 and 18mm×18mm square steel tubes 14. The 18mm×18mm square steel tube 14, which connects the mounting bracket 25 to the table 27, is cut into two uprights. Three equally spaced ￠5 height adjustment holes are drilled on the uprights. Square holes are formed on the 20mm×20mm square steel tube 13. ￠4 bolts 6 pass through the height adjustment holes on the uprights and the square holes on the square steel tube 13, and are then tightened with nuts for fixation. By selecting the adjustment holes at three different height positions on the upright and matching them with bolts, the height of the guard 24 can be adjusted in three levels, corresponding to the height of the lower edge of the guard from the table surface of 45mm, 60mm, and 95mm respectively, which is suitable for cutting plates with a thickness of 5mm to 50mm.

[0073] The feed drive system includes a 50mm×50mm drive rack 18 fixedly mounted on one side of the platform 27, and a drive motor 17 mounted on the moving platform trolley 12. Three ￠4 bolts 6 are welded to the bottom of the drive rack 18, and three equally spaced ￠5 through holes are drilled on the platform 27 at corresponding positions. After the bolts are inserted into the through holes, they are tightened with nuts. The straightness of the rack installation is ≤0.5mm / m. The drive motor 17 is a geared motor, with a ￠30 steel gear 19 mounted on its output shaft. The steel gear 19 meshes with the drive rack 18, converting the motor's rotational motion into the trolley's linear feed motion. The drive motor 17 has a power of 1.5kW~2.2kW and is equipped with a frequency converter for stepless speed regulation.

[0074] The mobile platform trolley is constructed by welding, using δ5 steel plate 5 as the panel and 50mm×50mm angle steel 7 as the frame. The trolley platform measures 2000mm×1500mm and has a load-bearing capacity of ≥300kg. Four ￠200 steel wheels 15 are mounted at the bottom of the trolley, each containing a ￠100 bearing 4 to reduce running resistance. ￠18 round steel bars 10 are welded to the ends of the trolley as axles, with the wheels mounted on them via bearings. Four quick-release clamps 20 are installed on the trolley platform, located at the four corners of the plate 23. The clamps employ either threaded locking or cam locking structures, with adjustable clamping force to prevent slippage and indentation of the plate.

[0075] The control unit includes an electrical control cabinet, which houses start and stop buttons for the saw blade drive motor 8 and the trolley drive motor 17, as well as a knob for adjusting the trolley feed speed. The control unit also includes electrical components such as frequency converters, contactors, and thermal relays to achieve independent control and interlocking protection for the two motors.

[0076] Example 2

[0077] Based on Example 1, the cutting system in this embodiment further includes a dust collection and suppression device. The dust collection and suppression device includes suction ports, an industrial vacuum cleaner, and a piping system. Suction ports are provided on both sides of the saw blade 28, and the suction ports are funnel-shaped, opening towards the contact area between the saw blade and the sheet metal, effectively capturing dust and debris generated during the cutting process. The suction ports are connected to an industrial vacuum cleaner with a power of ≥3kW via a PVC pipe with a diameter of ￠100mm. The industrial vacuum cleaner uses a cartridge or bag filter structure with a filtration efficiency of ≥99.9%.

[0078] The water-cooled spray system is activated simultaneously during stone cutting. The system includes a water tank, water pump, water pipes, and nozzles. The nozzles are positioned beside the saw blade 28, aimed at the cutting contact point between the blade and the slab, with a water flow rate of 0.5~2L / min. The water-cooled spray system has a dual function: firstly, it reduces the saw blade temperature, preventing overheating and failure (the saw blade temperature can reach over 200℃ during stone cutting), thus extending its lifespan; secondly, it wets the cutting area, suppressing dust and achieving a dual dust reduction effect when used in conjunction with a vacuum cleaner.

[0079] Example 3

[0080] Based on Example 1, the cutting system in this example also includes a safety protection device. The safety protection device includes an emergency stop button, a mechanical brake, and a travel limit switch.

[0081] The emergency stop button is a red, mushroom-shaped button located next to the operating position for easy access by the operator. It is a normally closed contact connected in series in the control circuits of the saw blade drive motor 8 and the trolley drive motor 17. When the emergency stop button is pressed, the main contactors of both motors simultaneously disconnect, achieving a power-off shutdown.

[0082] The mechanical braking device is connected to the saw blade 28 and adopts an electromagnetic brake structure. During normal operation, the electromagnet is energized and engaged, and the brake pads disengage from the brake disc; in case of emergency stop or power failure, the electromagnet is de-energized and released, and the brake pads press against the brake disc under the action of spring force, stopping the saw blade within 2 seconds to prevent secondary damage caused by the inertial rotation of the saw blade.

[0083] Limit switches are located at both ends of the trolley's feed path, namely a start-end limit switch and an end-end limit switch. The limit switches are mechanical contact type or proximity type sensors. When the trolley 12 reaches the end of the feed stroke, the limit switch is triggered, the control circuit automatically cuts off the power to the trolley drive motor 17, the trolley stops feeding, and at the same time, an audible and visual alarm signal is issued to prompt the operator that the cutting is complete or that a return operation is needed.

[0084] Example 4

[0085] This embodiment provides a more detailed description of the protective cover. The transparent fiberglass protective cover 24 is composed of two transparent fiberglass semi-circular covers with a thickness of δ10. Each semi-circular cover has a concentric semi-circular ring structure, with an outer diameter 100mm larger than the diameter of the saw blade 28, and a width (the difference between the outer and inner diameters) of 50mm. The sides of the cover have fixed flanges, which are rectangular flat plates with a width of 20mm, extending along the semi-circular arc of the cover.

[0086] Five equally spaced ￠5 holes are drilled on the flange. During assembly, the two semi-circular covers are joined together from both sides of the saw blade 28, with the semi-circular arc surfaces of the covers facing the center of the saw blade, so that the saw blade 28 is located at the center of the circular cavity formed by the two covers. The gap between the two covers is 5mm, and they are connected and tightened with ￠4 bolts 6 and nuts through the four holes (two on each side) on both sides of the flange to form a complete circular cover. The fifth hole at the top of the flange (located at the top after the two covers are joined) is used to connect to the fixing frame 25. This hole is connected and tightened with ￠5 holes drilled on the side of the 18mm×18mm square steel tube 14 of the saw blade top fixing frame through ￠4 bolts 6.

[0087] The inner edge of the guard is 50mm from the edge of the saw blade. This distance ensures that the guard effectively covers the upper half of the saw blade (the front half in the direction of rotation), preventing the operator from touching the saw blade, while also preventing interference with the saw blade. After the guard is installed, the saw blade 28 protrudes from the lower half of the guard by approximately 180°, which is used for cutting into the board.

[0088] Example 5

[0089] This embodiment provides a more detailed description of the mobile platform trolley. The mobile platform trolley 12 is constructed by welding, using δ5 steel plate 5 as the panel and 50mm×50mm angle steel 7 as the frame. The panel dimensions are 2000mm×1500mm, and the upper surface of the panel is ground smooth with a flatness error ≤±1mm. The frame is a rectangular frame welded from four angle steels, with two additional transverse reinforcing angle steels inside to improve the overall rigidity and load-bearing capacity of the trolley.

[0090] The trolley is equipped with 200mm steel wheels 15 at each of its four corners. These wheels are double-flanged steel wheels with a flange height of 10mm, effectively preventing derailment during operation. Each wheel houses a 100mm deep groove ball bearing 4, with an interference fit to the wheel's inner bore and a clearance fit to the axle 10. The axle is a 18mm round steel bar 10, extending 100mm beyond the width of the trolley on each side, and is welded to the end of the trolley's angle steel frame 100mm from the edge.

[0091] Four quick-release clamps are installed on the carriage platform. The clamps are located at the four corners of the carriage panel, 100mm from the edge of the panel. The clamps adopt a cam-locking structure, including a fixed base, a movable pressure arm, and a cam handle. The fixed base is bolted to the carriage panel. One end of the movable pressure arm is hinged to the fixed base, and the other end is the clamping end, which is equipped with a rubber gasket to prevent damage to the surface of the material. The cam handle drives the movable pressure arm up and down via an eccentric cam mechanism, achieving quick clamping and releasing. The clamping force is adjusted by the rotation angle of the cam handle, ensuring that the material does not slip or leave indentations.

[0092] Example 6

[0093] This embodiment uses the example of cutting a 600mm×600mm×20mm natural granite slab into a 300mm×600mm size to illustrate the cutting method of the present invention in detail.

[0094] Step 1: Equipment Component Preparation

[0095] The following components are to be customized or procured: 10mm thick transparent fiberglass sheets with fixed flanges on the sides; tabletop cutting saw or tabletop circular saw; 30mm×30mm angle steel, 50mm×50mm angle steel; 5mm steel plate, 12# channel steel; 100mm and 20mm bearings; 4mm bolts and matching nuts; 50mm and 18mm round steel bars; 20mm×20mm and 18mm×18mm square steel pipes; 200mm steel wheels; drive motor for the mobile platform trolley; 50mm×50mm drive rack and 30mm steel gears; four quick-release clamps; industrial vacuum cleaner and water-cooled spray system. All steel components shall be cut to design dimensions and deburred and have the oxide layer removed.

[0096] Step 2: Fabrication of the table support frame

[0097] A δ5 steel plate 5 is used as the platform panel, and 12# channel steel 11 with lengths of 3000mm and 1800mm is used as the supporting frame. Two 3000mm long channel steels are arranged in parallel with a spacing of 1800mm, and two 1800mm long channel steels are welded between the two longitudinal channel steels as cross braces to form a rectangular frame. The δ5 steel plate 5 covers the frame and is welded and fixed to the upper flange of the channel steel around its perimeter. The flatness error of the platform is controlled within ±2mm. A 30mm×30mm angle steel 3 is welded to the end of the long side of the platform 100mm away, with the vertical edge of the angle steel facing upwards and a height of 30mm, as a limit stop for the mobile platform trolley 12.

[0098] Step 3: Fabrication and installation of transparent fiberglass protective cover and mounting frame

[0099] Cut δ10 transparent fiberglass into two semi-circular protective covers. The inner diameter of the protective cover is 100mm larger than the diameter of the saw blade (when using a ￠350mm diamond saw blade, the inner diameter of the protective cover is ￠450mm), and the width of the protective cover is 50mm (i.e., the outer diameter of the protective cover is ￠550mm). The inner edge of the protective cover is 50mm from the edge of the saw blade.

[0100] Drill five equally spaced ￠5 holes on the fixed flange of the side of the protective cover. During assembly, bring the two semi-circular cover pieces together from both sides of the saw blade 28, so that the saw blade is located at the center of the circular cavity formed by the two cover pieces. Connect the two protective cover pieces into a whole using ￠4 bolts 6 and nuts through the four holes on both sides.

[0101] A protective cover fixing frame 25 is fabricated by welding 20mm×20mm square steel tubes 13 and 18mm×18mm square steel tubes 14. The 18mm×18mm square steel tube 14, which connects the fixing frame to the table, is cut into two uprights, each 300mm high. Three equally spaced ￠5 height adjustment holes are drilled on each upright, with distances of 50mm, 110mm, and 170mm from the bottom of the upright, respectively. A ￠5 hole is drilled on the side of the 18mm×18mm square steel tube of the saw blade top fixing frame, and a ￠4 bolt 6 is used to connect and tighten it to the top flange of the protective cover (the fifth hole). A 30mm×30mm angle steel 3 is used as a connector at the bottom of the upright where it connects to the table. One side of the angle steel is welded to the side of the bottom of the upright, and the other side is fixed to the table 27 using a ￠4 bolt 6.

[0102] By selecting the mating positions of the ￠5 holes at different heights on the upright and the square holes of the 20mm×20mm square steel tube 13, and tightening them with ￠4 bolts 6 and nuts, the height of the protective cover 24 can be adjusted in three levels. The three levels correspond to the following heights from the bottom edge of the protective cover to the platform surface: 45mm (first level, suitable for thin plates ≤15mm thick), 60mm (second level, suitable for medium-thick plates 15~35mm thick), and 95mm (third level, suitable for thick plates 35~50mm thick).

[0103] Step 4: Install the drive rack

[0104] Drill three equally spaced ￠5 through holes at a predetermined position on one side of the platform 27, with a hole spacing of 200mm. Insert the three ￠4 bolts 6, pre-welded to the bottom surface of the 50mm×50mm drive rack 18, into the through holes of the platform and tighten them with nuts from below the platform. After the rack is installed, use a dial indicator to check the straightness of the rack installation and adjust it to ≤0.5mm / m.

[0105] Step 5: Mobile platform vehicle construction and drive connection

[0106] A mobile platform trolley 12 is fabricated by welding δ5 steel plate 5 as the panel and 50mm×50mm angle steel 7 as the frame. The trolley panel dimensions are 2000mm×1500mm. A ￠18 round steel bar 10 is welded 100mm from the end of the angle steel frame of the trolley to serve as an axle, with each end of the axle extending 100mm beyond the width of the trolley. ￠200 steel wheels 15, each equipped with a ￠100 bearing 4, are mounted on both ends of the axle.

[0107] A drive motor 17 is installed at the bottom of the trolley, and the motor is fixed to the bottom of the trolley frame by a mounting bracket. A ￠30 steel gear 19 is installed on the motor output shaft, and the meshing clearance between the gear and the rack is adjusted to 0.2mm~0.5mm to ensure that the gear and rack 18 mesh correctly. Four quick-release clamps 20 are set on the trolley platform, located at the four corners of the panel, 100mm from the edge.

[0108] Step Six: Rust Removal, Painting, and Adjustment

[0109] Rust removal treatment is performed on steel structural components such as the table support frame 26 and the guard fixing frame 25 (using manual rust removal or sandblasting to achieve St2 standard). One coat of anti-rust primer and two coats of topcoat (safety yellow color) are then applied. After all installation is completed, the power is connected for no-load testing. The testing includes checking whether the saw blade rotation direction is correct (counter-clockwise), whether the trolley's forward and backward movements are smooth, whether the guard lifting and lowering is flexible, and whether the clamp tightness is reliable. The no-load test run time is no less than 30 minutes to confirm that there are no abnormal noises or vibrations from any moving parts.

[0110] Step 7: Sheet metal cutting operation

[0111] A forklift 22 is used to lift a 600mm×600mm×20mm natural granite slab 23 onto a mobile platform trolley 12. Based on the slab thickness (20mm), the second adjustment position is selected (60mm from the bottom edge of the cover to the platform surface). The fixing bolts are loosened, and the 20mm×20mm square steel tube 13 is adjusted to the second height adjustment hole position and locked with ￠4 bolts 6. The distance between the bottom edge of the cover and the top surface of the slab is measured to be 8mm (60mm - 20mm - cover thickness 10mm = 30mm; the distance between the inner edge of the cover and the slab surface should be 5~10mm, which can be further precisely adjusted to 8mm by fine-tuning the tightness of the bolts), which meets the requirement of 5mm~10mm.

[0112] Use four quick-release clamps 20 to fix the four corners of the board respectively. Rotate the cam handle to the clamping position and check that the board does not slip and there are no indentations on the board surface.

[0113] First, start the saw blade drive motor 8. Once the saw blade reaches its rated speed of 3200 rpm, start the carriage drive motor 17. The motor meshes with the 50mm×50mm drive rack 18 via a ￠30 steel gear 19, driving the carriage to feed at a constant speed of 0.8m / min. During the cutting process, the operator can observe the position of the cutting line in real time through the transparent fiberglass protective cover 24.

[0114] Simultaneously activate dust removal and suppression operations: turn on the 3kW industrial vacuum cleaner for dust collection, and turn on the water-cooled spray device with a water flow rate of 1L / min to cool the saw blade and suppress dust.

[0115] The safety protection devices are activated simultaneously: the emergency stop button, mechanical brake, and travel limit switch are all in standby mode.

[0116] After cutting is complete (approximately 45 seconds per piece), once the saw blade has completely passed through the board, first turn off the carriage drive motor 17, and then turn off the saw blade drive motor 8 after the saw blade has been idling for 5 seconds. Release the four quick-release clamps 20 and remove the cut 300mm × 600mm board. Repeat the above steps to cut the next board.

[0117] Step 8: Maintenance

[0118] After each shift's cutting is completed, clean the table saw or circular saw 2 (remove dust and debris from the table surface, guard, and saw blade); check the temperature of the carriage drive motor 17 (≤70℃); clean debris from the drive rack 18 and steel gear 19 and apply grease; check the wear of the clamping shims of the quick-release clamp 20 and replace them if necessary. Every 100 hours of operation, lubricate the bearings of both motors, check the tightness of all fasteners (bolts, nuts), and retighten them. Every 500 hours of operation, check the saw blade wear; replace the saw blade when the outer diameter wear exceeds 10%.

[0119] Cutting quality inspection: The 300mm×600mm granite slabs cut in this embodiment had a dimensional deviation of +2.0mm / -1.5mm. The cut surfaces were smooth and flat, without chipping or wavy lines, meeting the dimensional accuracy requirements (≤±3mm) for exterior wall dry-hanging construction. The cutting failure rate was 0%, and the number of slabs cut per shift (8 hours) was 70.

[0120] Example 7

[0121] This embodiment uses the cutting of 12mm thick solid wood composite flooring as an example to illustrate the adaptability of the present invention to boards of different thicknesses.

[0122] The same cutting system as in Example 6 was used, but the saw blade was replaced with a ￠250mm carbide saw blade. The saw blade drive motor speed was set to 3400rpm. The plate thickness was 12mm, and the guard adjustment was set to the first position (the lower edge of the guard is 45mm from the table surface). After adjustment, the distance between the lower edge of the guard and the upper surface of the plate was 5mm (45mm - 12mm - the guard thickness of 10mm = 23mm, which was precisely controlled to 5mm by the fine-tuning bolt).

[0123] The trolley feed speed is set to 2.0 m / min (upper limit for softwood). Water cooling spray is not required during cutting (wood cutting does not pose a dust explosion risk); only an industrial vacuum cleaner is used for dust removal.

[0124] After cutting, the dimensions were inspected and found to be +1.2mm / -0.8mm, and the cut surface was smooth and burr-free. The number of pieces cut per shift (8 hours) is 150.

[0125] Example 8

[0126] This embodiment uses the cutting of 50mm thick natural marble as an example to illustrate the cutting capability of the present invention for thick slabs.

[0127] The same cutting system as in Example 6 was used, but the saw blade was replaced with a ￠400mm diamond saw blade. The plate thickness was 50mm, and the guard adjustment was set to the third position (the lower edge of the guard is 95mm from the table surface). After adjustment, the distance between the lower edge of the guard and the upper surface of the plate was 10mm (95mm - 50mm - the guard's own thickness 10mm = 35mm, which was precisely controlled to 10mm by the fine-tuning bolt), which meets the upper limit requirement of 5mm~10mm.

[0128] The trolley feed speed is set to 0.5 m / min (lower limit for hard stone). The industrial vacuum cleaner and water-cooled spray are turned on simultaneously, with a spray water volume of 2 L / min (upper limit for thick plate cutting due to high heat generation).

[0129] After cutting, the dimensional deviation was inspected and found to be +1.8mm / -2.0mm, which meets the requirement of ≤±3mm. The cutting time for a single piece is approximately 120 seconds.

[0130] Example 9

[0131] Based on Example 6, this example provides a further detailed description of the dust removal and dust reduction operation.

[0132] Before starting the cutting operation, first start the industrial vacuum cleaner. Once the vacuum cleaner is running stably, then start the saw blade motor. The suction ports are located on both sides of the saw blade 28, in a funnel shape, with an opening size of 150mm × 80mm, approximately 50mm from the contact point between the saw blade and the sheet metal. The suction ports are connected to a 3.5kW industrial vacuum cleaner via a ￠100mm PVC pipe. The vacuum cleaner has a filtration accuracy of 0.5μm, and the dust concentration in the exhaust air is ≤8mg / m³. 3 It meets national environmental protection emission standards.

[0133] When cutting stone, the water-cooled spray system is activated simultaneously. A water pump pressurizes the water in the tank to 0.3 MPa and sprays it through a 6mm copper pipe and atomizing nozzles to the cutting contact point between the saw blade and the slab. The spray rate is 1.5 L / min (for medium-speed cutting of 20mm thick granite). The water mist combines with dust and settles; any unsettled fine dust is captured by a vacuum cleaner. The sprayed water is collected in a collection trough around the cutting table and flows into a sedimentation tank for further settling and reuse.

[0134] After cutting, first turn off the water-cooled spray, wait for the saw blade to idle for 10 seconds to dry the water, then turn off the saw blade motor, and finally turn off the vacuum cleaner.

[0135] Performance testing: Dust concentration at the operating position (1m from the saw blade) during cutting ≤2mg / m³ 3It is far below the national occupational health standard (total dust concentration ≤ 8 mg / m³). 3 ).

[0136] Example 10

[0137] Based on Example 6, this example provides a further detailed description of the safety protection operation.

[0138] Before cutting, ensure that the emergency stop button is in the released (on) state, the mechanical brake device is in the standby state, and the contact rod of the travel limit switch is in the free state.

[0139] During the cutting process, if any abnormal situation occurs (such as board breakage, saw blade jamming, abnormal noise, etc.), the operator should press the emergency stop button. The emergency stop button is a red mushroom-shaped button that self-locks when pressed. Its normally closed contact opens, and the main contactors of the control circuits for the saw blade drive motor 8 and the trolley drive motor 17 are simultaneously disconnected, de-energizing both motors. At the same time, the electromagnet of the mechanical brake device is de-energized and released, and the brake pads press against the brake disc under the action of the spring force, causing the saw blade 28 to stop rotating completely within 1.8 seconds.

[0140] If the trolley 12 fails to stop feeding in time due to operator negligence, and the trolley touches the end limit switch, the normally closed contact of the limit switch will open, the control circuit of the trolley drive motor 17 will be disconnected, and the trolley will stop feeding. At the same time, the audible and visual alarm will sound a buzzer and flash a red light, automatically resetting after 10 seconds, or it can be manually reset by the operator.

[0141] After the cutting is completed, the trolley returns to the starting end. When it touches the travel limit switch at the starting end, the trolley drive motor is automatically powered off to prevent the trolley from derailing.

[0142] Example 11

[0143] This embodiment illustrates the quality control measures for the cutting method of the present invention.

[0144] Dimensional accuracy control: Before each shift, cut a sample plate and use calipers (accuracy 0.02mm) to measure the length, width, diagonal dimensions, and parallelism of the opposite sides of the cut plate. If the deviation exceeds ±3mm, adjust the following parameters:

[0145] Check if the trolley feed speed is uniform. If the speed fluctuation exceeds ±5%, check the inverter output and the gear-rack meshing status.

[0146] Check if the saw blade is worn (diamond saw blades used for more than 200m). 2 (Replace after cutting area)

[0147] Check that the fixture securely holds the sheet metal in place (the sheet metal should not have any visible displacement during the feeding process).

[0148] Fault control: Cutting faults include edge chipping, dimensional deviations, saw blade jamming, motor overload, and broken teeth. The total number of cut pieces and the number of faulty pieces are recorded for each shift. The fault rate is calculated as: (Number of faulty pieces ÷ Total number of pieces) × 100%. By adjusting cutting parameters (reducing feed speed by 10%~20%, replacing the saw blade, and checking the coolant level), the fault rate can be controlled to within 5%.

[0149] In all embodiments of the present invention, the cutting size error of the sheet metal is controlled within ±3mm, and the cutting failure rate is controlled within 5%.

Claims

1. A panel cutting system for integrated construction of new and old building facades, characterized in that, include: The frame part is a table-type cutting saw or table-type circular saw (2) consisting of a table (27) and a support frame (26). The support frame (26) is welded from δ5 steel plate (5) and 12# channel steel (11). A 30mm×30mm angle steel (3) is welded at 100mm from the end of the long side of the table (27) as a limit stop. Cutting section: saw blade (28) mounted on table (27) and saw blade drive motor (8) that drives the saw blade to rotate; Protective cover section: A transparent fiberglass protective cover (24) is set above the saw blade (28). The protective cover (24) is installed on the table (27) by a fixing frame (25). The fixing frame (25) is composed of a 20mm×20mm square steel tube (13) and an 18mm×18mm square steel tube (14). Multiple equally spaced height adjustment holes are provided on the upright. The height of the protective cover (24) can be adjusted by the bolt (6) cooperating with the square holes on the square steel tube (13). Feed drive section: a 50mm×50mm drive rack (18) fixedly installed on one side of the platform (27), and a drive motor (17) installed on the mobile platform trolley (12). A ￠30 steel gear (19) is installed on the output shaft of the drive motor (17), and the steel gear (19) meshes with the drive rack (18). Mobile platform trolley: The mobile platform trolley (12) is welded from δ5 steel plate (5) and 50mm×50mm angle steel (7). The bottom of the trolley is equipped with ￠200 steel wheels (15), and the wheels are equipped with ￠100 bearings (4). ￠18 round steel bars (10) are welded to the end of the trolley as axles. A quick-release clamp (20) is provided on the trolley platform to fix the plate to be cut (23). Control section: An electrical control system for controlling the start, stop and speed adjustment of the saw blade drive motor (8) and the trolley drive motor (17).

2. The panel cutting system for integrated construction of new and old building facades according to claim 1, characterized in that, The transparent fiberglass cover (24) is composed of two transparent fiberglass semi-circular covers with a thickness of δ10. The side of the cover has a fixed flange, and five equally spaced ￠5 holes are drilled on the flange. The four holes on both sides are connected as a whole by ￠4 bolts (6) and nuts. The inner diameter of the cover is 100mm larger than the diameter of the saw blade (28). The inner edge of the cover is 50mm away from the edge of the saw blade. The light transmittance of the cover is ≥85%. The support rod of the fixed frame (25) is provided with three equally spaced ￠5 height adjustment holes. With the square holes on the 20mm×20mm square steel tube (13) and the ￠4 bolts (6), the cover (24) can be adjusted in three levels within the height range of 50mm to 200mm.

3. The panel cutting system for integrated construction of new and old building facades according to claim 1, characterized in that, The bottom surface of the drive rack (18) is welded with three ￠4 bolts (6), and the corresponding position of the platform (27) is drilled with three equally spaced ￠5 through holes. After the bolts are inserted into the through holes, they are locked with nuts. The straightness of the rack installation is ≤0.5mm / m. There are 4 quick-release clamps (20), which fix the four corners of the plate (23) respectively.

4. The panel cutting system for integrated construction of new and old building facades according to claim 1, characterized in that, It also includes a dust removal and dust suppression device and a safety protection device; the dust removal and dust suppression device includes a dust suction port set on both sides of the saw blade (28), the dust suction port is connected to an industrial vacuum cleaner with a power of ≥3kW through a pipe, and a water-cooled spray device set on the side of the saw blade, with a spray water volume of 0.5~2L / min; the safety protection device includes an emergency stop button set on the side of the operating position, a mechanical brake device connected to the saw blade (28), and a travel limit switch set at both ends of the trolley feed path. When the emergency stop button is pressed or the trolley triggers the travel limit switch, the saw blade drive motor (8) and the trolley drive motor (17) are simultaneously de-energized, and the mechanical brake device brakes the saw blade to a stop within 2s.

5. A method for cutting decorative panels for integrated construction of new and old building facades, comprising using the cutting system described in any one of claims 1 to 4 to cut the decorative panels, characterized in that, Includes the following steps: S1: The platform support frame (26) is made by welding δ5 steel plate (5) and 12# channel steel (11), and 30mm×30mm angle steel (3) is welded to the end of the long side of the platform at 100mm position as a limit block; S2: Cut δ10 transparent fiberglass into two semi-circular protective covers and combine them into a transparent fiberglass protective cover (24). The inner diameter of the protective cover is 100mm larger than the diameter of the saw blade. The inner edge of the protective cover is 50mm away from the edge of the saw blade. A protective cover fixing frame (25) is made by welding 20mm×20mm square steel pipe (13) and 18mm×18mm square steel pipe (14). Three equally spaced height adjustment holes are drilled on the upright. The protective cover (24) is installed on the table plate (27) through the fixing frame (25). S3: Drill three equally spaced through holes on the platform (27) and fix the 50mm×50mm drive rack (18) with bolts welded to the bottom to one side of the platform (27); S4: A mobile platform trolley (12) is made by welding δ5 steel plate (5) and 50mm×50mm angle steel (7). ￠200 steel wheels (15) are installed at the bottom of the trolley. ￠18 round steel rods (10) are welded to the end of the trolley as axles. Four quick-release clamps (20) are set on the trolley platform. A drive motor (17) is installed at the bottom of the trolley. ￠30 steel gears (19) are installed on the motor output shaft to mesh with the drive rack (18). S5: Remove rust and paint the table support frame (26) and the protective cover fixing frame (25), and connect the power supply for debugging; S6: Place the plate to be cut (23) on the mobile platform trolley (12), adjust the height of the guard (24) according to the thickness of the plate so that the lower edge of the guard is 5mm~10mm away from the upper surface of the plate, fix the four corners of the plate with four quick-release clamps (20), start the saw blade drive motor (8), and start the trolley drive motor (17) after the saw blade reaches the rated speed. The trolley feeds along the rack (18) at a uniform speed to complete the cutting. S7: Perform equipment maintenance after cutting is completed.

6. The method for cutting decorative panels for integrated construction of new and old building facades according to claim 5, characterized in that, In S6, the rated speed of the saw blade is 2800~3500rpm, the feed speed of the trolley is 0.5~2.0m / min, and the feed speed is adjusted according to the material and thickness of the plate. The height adjustment range of the guard (24) is 50mm~200mm. Through the cooperation of the three equally spaced height adjustment holes on the upright of the fixed frame (25) and the square hole of the 20mm×20mm square steel pipe (13), the height of the lower edge of the guard from the table surface is adjusted to three levels: 45mm, 60mm and 95mm respectively, which are suitable for plates with a thickness of 5mm~50mm.

7. The method for cutting decorative panels for integrated construction of new and old building facades according to claim 5, characterized in that, In S6, during the cutting operation, the dust removal and dust reduction operation is started simultaneously: the dust suction ports set on both sides of the saw blade (28) are connected to an industrial vacuum cleaner with a power of ≥3kW through pipes for dust suction. When cutting the stone, the water-cooled spray device is started simultaneously, and the spray water volume is 0.5~2L / min.

8. The method for cutting decorative panels for integrated construction of new and old building facades according to claim 5, characterized in that, In S6, during the cutting operation, the safety protection device is activated simultaneously: the emergency stop button next to the operating position, the mechanical brake device connected to the saw blade (28), and the travel limit switches at both ends of the trolley feed path are in standby state. When the emergency stop button is pressed or the trolley triggers the travel switch, the saw blade drive motor (8) and the trolley drive motor (17) are simultaneously de-energized, the mechanical brake device brakes the saw blade to stop within 2 seconds, and the travel limit switch is triggered to issue an audible and visual alarm.

9. The method for cutting decorative panels for integrated construction of new and old building facades according to claim 5, characterized in that, In S6, the clamping force of the quick-release clamp (20) is such that the plate does not slip and does not produce indentations; the cutting size error of the plate (23) is controlled within ±3mm, and the cutting failure rate is controlled within 5%.

10. The method for cutting decorative panels for integrated construction of new and old building facades according to claim 5, characterized in that, In S7, the equipment maintenance specifically involves regularly cleaning, lubricating, and inspecting the fasteners of the table cutting saw or table circular saw (2), trolley drive motor (17), drive rack (18), steel gear (19), and quick-release clamp (20) in preparation for the cutting of the next batch of engineering plates.

Images