A device for painting the surface of a board for furniture processing and a processing method thereof

Abstract

The present invention relates to a device for painting the surface of a board for furniture processing and a processing method thereof. The present invention effectively solves the problems of existing painting devices with low precision, inability to ensure the flatness of the paint film, inability to paint sufficiently and evenly, low efficiency, and affecting the quality of furniture. The technical solutions include: the device for painting the surface of a board for furniture processing and the processing method thereof apply paint of uniform thickness to the surface of the board through a double-step suspended scraper mechanism to ensure the flatness of the paint surface, an adaptive curing mechanism can heat and cure the paint to accelerate the curing efficiency, an air cooling mechanism can quickly cool the paint surface to reduce cooling time; a floating polishing mechanism can finely polish the cured paint surface to remove convex spots on the paint surface, and the dust generated during polishing will be fully recovered by the dust collection mechanism to further reduce the dust adhesion on the paint surface, thereby improving the painting quality of the board, and the device can greatly accelerate the painting efficiency of the board, and is more convenient for use during furniture processing.

Description

Technical Field

[0001] The present invention relates to the technical field of furniture board painting devices, in particular to a furniture board surface painting device and a processing method thereof. Background Art

[0002] With the improvement of living standards, people gradually pay more attention to environmental protection. In the selection of furniture materials, wooden furniture has gradually attracted more and more attention. In the production and manufacturing of wooden furniture, a painting device is needed. The paint layer is applied on the surface of the wooden furniture through the painting device, thereby improving the aesthetics of the wooden furniture and playing a role in preventing insects and moisture.

[0003] At present, when painting furniture panels, most of the time, the panels are painted using a manually operated paint brushing device, which wastes manpower. In addition, the existing paint brushing device has a simple structure, low painting accuracy for the panels, cannot guarantee the flatness of the paint film, and cannot fully and evenly paint the panels, resulting in inconsistent paint film thickness on various parts of the panel surface, affecting production quality. In addition, the existing paint brushing device has low efficiency, affecting production capacity, and cannot effectively remove dust when polishing the paint surface, which will cause environmental dust to adhere to the paint surface again, affecting the adhesion of the paint film, and thus affecting the overall production quality of the furniture.

[0004] In view of the above, we provide a device for painting the surface of a board used for furniture processing and a processing method thereof to solve the above problems. Summary of the Invention

[0005] In response to the above situation, the present invention provides a device for painting the surface of a board for furniture processing and a processing method thereof. The device can ensure the flatness of the paint surface, ensure that the paint film thickness of each part of the board surface is consistent, improve the painting quality of the board, and greatly speed up the painting efficiency of the board, making it more convenient to use when processing furniture.

[0006] A device for painting the surface of a board for furniture processing and a processing method thereof, comprising a conveyor line, a first support frame, a second support frame and a third support frame, wherein a movable platform capable of driving the board to move is provided at the top of the conveyor line, the first support frame, the second support frame and the third support frame are all fixedly mounted on the top of the conveyor line, a spatial movable mechanism is provided at the top of the first support frame and a movable end of the spatial movable mechanism is provided with a double-step suspended scraper mechanism for painting the board, a preheating tube for preheating the board is fixedly mounted on the side of the first support frame away from the second support frame, an adaptive curing mechanism for curing the paint surface on the surface of the board is provided on the inner top wall of the second support frame and an air cooling mechanism for quickly cooling the paint surface is provided on the side of the interior away from the first support frame, an electrostatic dust removal rod is fixedly mounted on the top of the third support frame on the side close to the second support frame, a four-way adjustment mechanism is provided in the middle of the top of the third support frame and a floating polishing mechanism for removing paint bumps is provided at the movable end of the bottom of the four-way adjustment mechanism, and a dust suction mechanism for timely absorbing dust is provided on the side of the floating polishing mechanism close to the electrostatic dust removal rod.

[0007] Preferably, the mobile platform is composed of a transmission mechanism and a plate fixing mechanism, the transmission mechanism includes a first motor, a pulley shaft and a belt, the number of the pulley shafts is two, and the two pulley shafts are rotatably connected to the two sides of the top of the conveyor line, the output end of the first motor is connected to one of the pulley shafts through a spline, and the two sides of the two pulley shafts are transmission-connected with belts; the plate fixing mechanism includes a connecting block, a movable plate, a clamping frame and a first electric push rod, the four corners of the lower surface of the movable plate are fixedly connected to the connecting blocks, and the connecting blocks on both sides are fixedly connected to the upper surface of the corresponding belt, the two sides of the movable plate are transversely penetrated by symmetrically arranged clamping frames, and the middle of both sides of the lower surface of the movable plate are fixedly installed with the first electric push rod, and the ends of the movable rod bodies of the two first electric push rods are respectively fixedly connected to the middle of the two clamping frames close to one end.

[0008] Preferably, the space movable mechanism includes a first screw, a second motor, a second screw of the transverse moving frame and a third motor, the number of the first screws is two and the two first screws are respectively connected to both sides of the top of the first support frame for horizontal rotation, the same end of the two first screws is transmission-connected with a transmission belt and the output end of the second motor is connected to one of the first screws through a spline. Both ends of the transverse moving frame are transmission-connected to the outside of the two first screws and the second screw is horizontally rotation-connected to the inside of the transverse moving frame, the second screw and the two first screws are perpendicular to each other, and the output end of the third motor is connected to the second screw through a spline; the space movable mechanism also includes a screw slider, a horizontal fixed plate and a second electric push rod, the screw slider is transmission-connected to the outside of the second screw and the bottom is fixedly connected to the horizontal fixed plate, the second electric push rods are vertically fixedly installed on both sides of the upper surface of the horizontal fixed plate and the movable rod bodies of the two second electric push rods are both passed through the bottom of the horizontal fixed plate.

[0009] Preferably, the double-stage suspended scraper mechanism includes a tool holder, a paint scraper and a paint injection tube, the tool holder is fixedly connected to the bottom of the two second electric push rod movable rods and the paint scraper is fixedly connected to the lower surface of the tool holder in an inclined state, the paint scraper is provided with a paint distribution chamber for storing paint inside and a plurality of flow equalizing holes are opened horizontally and equidistantly at the bottom end, the outlet end of the paint injection tube is fixedly connected to the upper surface of the paint scraper and is connected to the paint distribution chamber inside it, the inlet end of the paint injection tube is passed through the upper surface of the tool holder and is connected to the external paint delivery pipe, and a vertically downward laser rangefinder is fixedly installed in the middle of the top end of the paint scraper.

[0010] Preferably, the double-stage suspended scraper mechanism also includes a third electric push rod, a connecting plate, a spring, a double-layer polyurethane scraper and a micro-vibration motor. The number of the third electric push rods is two, and the two third electric push rods are horizontally fixedly installed on both sides of the lower surface of the tool holder, and the connecting plate is fixedly connected to the ends of the movable rods of the two third electric push rods. The number of the springs is several, and several springs are equidistantly fixedly connected to the lower surface of the connecting plate. The double-layer polyurethane scraper is fixedly connected to the bottom ends of several springs. The micro-vibration motor is fixedly installed in the middle of the upper surface of the double-layer polyurethane scraper. The bottom end of the double-layer polyurethane scraper is in the same horizontal plane as the bottom end of the paint scraper and the two have the same width.

[0011] Preferably, the adaptive curing mechanism includes infrared lamps and temperature sensors, the number of the infrared lamps is several and the several infrared lamps are fixedly installed at equal distances on the inner top wall of the second support frame, a temperature sensor is provided between every two adjacent infrared lamps in the same row and the several temperature sensors are fixedly installed on the top of the second support frame and the detection directions are vertically downward.

[0012] Preferably, the air cooling mechanism includes a fourth electric push rod, a fixed frame, a fifth electric push rod, a rack, a spur gear and a wind knife, the fixed rod body of the fourth electric push rod is vertically fixedly installed on the side of the upper surface of the second support frame away from the first support frame, the fixed frame is fixedly connected to the bottom of the movable rod body of the fourth electric push rod and the fixed rod body of the fifth electric push rod is horizontally fixedly installed on the side of the fixed frame, the fixed frame is fixedly installed with a laser rangefinder in the middle of the side near the fifth electric push rod, the rack is fixedly connected to the end of the movable rod body of the fifth electric push rod and is horizontally passed through the bottom of the fixed frame, the number of the spur gears is two and the two spur gears are respectively fixedly connected to both sides of the upper surface of the wind knife, and the two spur gears and both sides of the wind knife are rotatably connected to the bottom of the fixed frame, the air inlet end of the wind knife is connected to the external air supply duct, the number of the fifth electric push rod and the rack are both two and the two spur gears are respectively meshed with the two racks.

[0013] Preferably, the four-way adjustment mechanism includes a third lead screw, a fourth motor, a support plate and a sixth electric push rod, the third lead screw is horizontally rotatably connected to the top of the third support frame and is connected to the output end of the fourth motor through a spline, the fourth motor is fixedly mounted on the side of the third support frame, the top of the third support frame is fixedly connected to a guide rod and one side of the support plate is sleeved on the outside of the guide rod and the other side is transmission-connected to the outside of the third lead screw, the number of the sixth electric push rod is two and the fixed rod bodies of the two sixth electric push rods are respectively vertically fixed on both sides of the upper surface of the support plate.

[0014] Preferably, the floating grinding mechanism includes a lifting frame, a rotating shaft, a ceramic sanding belt and a fifth motor, the lifting frame is fixedly mounted on the bottom of the movable rod body of the sixth electric push rod and the four corners of its upper surface are fixedly connected to auxiliary rods, the four auxiliary rods are all passed through the four corners of the support plate, both sides of the interior of the lifting frame are rotatably connected to the rotating shaft and the ceramic sanding belt is transmission-connected to the outside of the two rotating shafts, the fifth motor is fixedly mounted on the side of the lifting frame and the output end is connected to one of the rotating shafts through a spline; the dust suction mechanism It includes a negative pressure dust suction pipe and a diversion telescopic negative pressure pipe. The negative pressure dust suction pipe is fixedly connected to the side of the lifting frame close to the electrostatic dust removal rod, and the air inlet end of the negative pressure dust suction pipe is inclined and corresponds to the lower surface of the ceramic sanding belt. A laser rangefinder is fixedly installed on the middle part of the negative pressure dust suction pipe away from the lifting frame. The diversion end of the diversion telescopic negative pressure pipe is fixedly connected to the air outlet end at the top of the negative pressure dust suction pipe and is connected to the interior thereof. The top end of the diversion telescopic negative pressure pipe passes through the upper surface of the third support frame and is connected to the external negative pressure pipe.

[0015] A method for processing a device for painting the surface of a panel for furniture processing, comprising the following steps:

[0016] 1. Move the plate fixing mechanism to the end near the first motor through the conveying mechanism, and then place the plate to be painted on the plate fixing mechanism. The plate fixing mechanism can clamp and fix the plate, and then the conveying mechanism drives the plate to move backward at a uniform speed;

[0017] Second, when the plate moves to the bottom of the preheating tube, the preheating tube will blow hot air of the set temperature to the upper surface of the plate to preheat the surface of the plate, thereby improving the adhesion of the paint. When the plate is completely moved to the bottom of the first support frame, the conveying mechanism is controlled to pause, and then the measurement data of the laser rangefinder is used to control the spatial activity mechanism to adjust the height of the double-step suspended scraper mechanism so that the distance between the bottom end of the double-step suspended scraper mechanism and the upper surface of the plate is maintained between .mm-.mm. Paint is injected into the paint scraper through the external paint injection tube to keep the paint output of each equal flow hole consistent, and the micro-vibration motor is operated to make the double-layer polyurethane scraper generate high-frequency micro-vibration to prevent paint accumulation and improve leveling. At the same time, the double-step suspended scraper mechanism is controlled by the spatial activity mechanism to move horizontally at a uniform speed in the opposite direction of the plate movement to perform preliminary painting on the plate.

[0018] 3. After the upper surface of the plate is completely painted by the double-stage suspended scraper mechanism driven by the spatial activity mechanism, the plate is driven to continue to move backward through the conveying mechanism. When the plate enters under the second support frame, the adaptive curing mechanism can heat and cure the paint film surface on the plate to prevent sagging. The adaptive curing mechanism can control the temperature in different zones, which is convenient for dynamically adjusting the heating temperature according to the temperature of each part of the plate to prevent overheating and cracking. When the heating of the paint film is completed, the height and blowing angle of the air cooling mechanism can be adjusted to ensure that the air flow covers the entire range of the plate paint surface, and blow low-temperature and high-speed airflow to the paint surface of the plate, reducing the paint film temperature to ℃ within seconds, which can greatly reduce the waiting time between layers.

[0019] Fourth, after the paint surface of the plate is solidified and cooled, the plate is driven to continue to move backward through the transmission mechanism, and the electrostatic dust removal rod on the third support frame is operated to eliminate the dust adhesion between layers. At the same time, the floating polishing mechanism is operated, and the lower surface of the floating polishing mechanism is adjusted to the position that fits the paint surface according to the laser rangefinder on the side of the negative pressure dust suction pipe, and the paint surface is polished to remove the convex spots on the paint surface. The dust suction mechanism can collect the dust from the polished part and recycle the dust immediately. When the floating polishing mechanism completes the polishing of the corresponding paint surface, the horizontal position of the floating polishing mechanism is adjusted by the four-way adjustment mechanism to correspond to the unpolished area of ​​the paint surface, and the plate is returned to the position corresponding to the electrostatic dust removal rod through the transmission mechanism, and moved backward at a uniform speed again, so that the floating polishing mechanism polishes the unpolished part, and the above operation is repeated until the paint surface of the plate is completely polished. At this point, a complete painting process is completed.

[0020] 5. Then, the plate is driven back to the initial position by the conveying mechanism, and the above steps 1 to 4 are repeated, and the plate is repeatedly painted multiple times according to the final required paint thickness.

[0021] The beneficial effects of the above technical solution are:

[0022] The device for painting the surface of a panel for furniture processing and the processing method thereof can apply paint of uniform thickness to the surface of the panel through a double-stage suspended scraper mechanism, and can ensure the flatness of the paint surface and the uniform thickness of the paint film at various parts of the panel surface; the adaptive curing mechanism can heat and cure the paint, and can dynamically adjust the heating temperature in real time according to the temperature of the paint surface, ensuring that the paint surface will not crack due to overheating while curing the paint surface at the fastest speed, thereby accelerating the curing efficiency; the air cooling mechanism can quickly cool the paint surface, further reducing the cooling time; the electrostatic dust removal rod can eliminate the paint surface Dust is removed to ensure good adhesion when painting multiple times in the future, and the floating sanding mechanism can finely sand the solidified paint surface, remove convex spots on the paint surface, and ensure a smooth paint surface. At the same time, the dust suction mechanism can fully correspond to the floating sanding mechanism. The dust generated by the floating sanding mechanism during sanding will be fully recovered by the dust suction mechanism, further reducing the dust adhesion on the paint surface, thereby improving the painting quality of the board. The device can make the whole set of painting processes work together, which can greatly speed up the painting efficiency of the board, effectively improve the production capacity of furniture, and is more convenient to use when processing furniture. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0024] Figure 2 Schematic diagram of the first screw and the second screw of the present invention;

[0025] Figure 3 This is a schematic diagram of the double-stage suspended scraper mechanism of the present invention;

[0026] Figure 4 Schematic cross-section of the paint scraper of the present invention;

[0027] Figure 5 For the present invention Figure 3 Schematic diagram of the split state;

[0028] Figure 6 This is a schematic diagram of the air cooling mechanism of the present invention;

[0029] Figure 7 For the present invention Figure 6 Schematic diagram of the split state;

[0030] Figure 8 Schematic diagram of the adaptive curing mechanism of the present invention;

[0031] Figure 9This is a schematic diagram of the overall structure of the third support frame of the present invention;

[0032] Figure 10 Schematic diagram of the four-way adjustment mechanism, floating grinding mechanism and dust collection mechanism of the present invention;

[0033] Figure 11 This is a schematic diagram of the floating grinding mechanism and the dust collection mechanism of the present invention in the disassembled state;

[0034] Figure 12 This is a schematic diagram of the platform transmission mechanism of the present invention in a disassembled state;

[0035] Figure 13 This is a schematic diagram of the plate fixing mechanism of the present invention in a disassembled state.

[0036] In the figure: 1. Conveyor line; 2. First support frame; 3. Second support frame; 4. Third support frame; 5. Electrostatic dust removal rod; 6. Conveying mechanism; 601. First motor; 602. Pulley shaft; 603. Belt; 7. Plate fixing mechanism; 701. Connecting block; 702. Moving plate; 703. Clamping frame; 704. First electric push rod; 8. First lead screw; 9. Second motor; 10. Horizontal moving frame; 11. Second lead screw; 12. Third motor; 13. Lead screw slider; 14. Horizontal fixing plate; 15. Second electric push rod; 16. Tool holder; 17. Paint scraper; 18. Paint injection tube; 19. Laser Distance meter; 20. Third electric push rod; 21. Connecting plate; 22. Spring; 23. Double-layer polyurethane scraper; 24. Micro vibration motor; 25. Infrared lamp; 26. Temperature sensor; 27. Fourth electric push rod; 28. Fixed bracket; 29. ​​Fifth electric push rod; 30. Rack; 31. Spur gear; 32. Air knife; 33. Third lead screw; 34. Fourth motor; 35. Support plate; 36. Sixth electric push rod; 37. Guide rod; 38. Lifting frame; 39. Rotating shaft; 40. Ceramic sanding belt; 41. Fifth motor; 42. Negative pressure dust suction exhaust pipe; 43. Diversion telescopic negative pressure pipe; 44. Preheating pipe. DETAILED DESCRIPTION

[0037] The above and other technical contents, features and effects of the present invention are described below with reference to the attached Figures 1 to 13 It can be clearly presented in the detailed description of the embodiments that the structural contents mentioned in the following embodiments are all referenced to the drawings in the specification.

[0038] This embodiment provides a device for painting the surface of a board for furniture processing and a processing method thereof, as shown in the attached Figure 1-13As shown, it includes a conveyor line 1, a first support frame 2, a second support frame 3 and a third support frame 4. A mobile platform that can drive the plate to move is provided on the top of the conveyor line 1. The mobile platform is composed of a conveying mechanism 6 and a plate fixing mechanism 7. The conveying mechanism 6 includes a first motor 601, a pulley shaft 602 and a belt 603. There are two pulley shafts 602 and the two pulley shafts 602 are rotatably connected to both sides of the top of the conveyor line 1. The output end of the first motor 601 is connected to one of the pulley shafts 602 through a spline, and the first motor 601 is fixedly installed at the top of the side of the conveyor line 1. Both sides of the two pulley shafts 602 are transmission-connected with belts 603. The first motor 601 drives the pulley shafts 602 connected thereto to rotate, which can drive the belts 603 on both sides to rotate synchronously; the plate fixing mechanism 7 includes a connecting block 701, a movable plate 702, a clamping frame 703 and a first electric push rod 704. The four corners of the lower surface of the movable plate 702 are fixed The guide rods 37 are connected to the connecting blocks 701 on both sides and are fixedly connected to the upper surface of the corresponding belt 603. The guide rods 37 are fixedly connected to the two sides of the top of the conveyor line 1. The connecting blocks 701 on both sides of the lower surface of the movable plate 702 are sleeved on the outside of the guide rods 37 and can slide laterally along the outside. When the belt 603 rotates, the movable plate 702 can be driven to move laterally through the connecting blocks 701. The guide rods 37 can ensure the stability of the movement of the movable plate 702, thereby improving the accuracy of painting the plate; symmetrical clamping frames 703 are laterally penetrated on both sides of the movable plate 702, and the middle part of both sides of the lower surface of the movable plate 702 is fixedly installed with a first electric push rod 704. The ends of the movable rod bodies of the two first electric push rods 704 are respectively fixedly connected to the middle part of the two clamping frames 703 close to each other. The first electric push rod 704 moves synchronously, which can push the clamping frames 703 on both sides to move closer or away from each other, so that the clamping frames 703 clamp and fix the plate.

[0039] The first support frame 2, the second support frame 3 and the third support frame 4 are all fixedly mounted on the top of the conveyor line 1, and a space activity mechanism is provided at the top of the first support frame 2, which includes a first lead screw 8, a second motor 9, a transverse moving frame 10, a second lead screw 11 and a third motor 12. There are two first lead screws 8 and the two first lead screws 8 are horizontally rotated and connected to both sides of the top of the first support frame 2. The same end of the two first lead screws 8 is transmission-connected with a transmission belt and the output end of the second motor 9 is connected to one of the first lead screws 8 through a spline. A motor base is fixedly connected to the side of the first support frame 2 near the second motor 9, and the second motor 9 is fixedly mounted on the side of the motor base. Both ends of the transverse moving frame 10 are transmission-connected to the outside of the two first lead screws 8 and the second lead screw 11 is horizontally rotationally connected to the inside of the transverse moving frame 10. The second lead screw 11 is perpendicular to the two first lead screws 8. The output end of the third motor 12 is connected to the second lead screw 11 through a spline, and the third motor 12 is fixedly mounted on one side of the transverse moving frame 10; the space activity mechanism also includes a lead screw slide The second motor 9 drives the first lead screw 8 connected thereto to rotate, and can drive another first lead screw 8 to rotate through the transmission belt, so that the two first lead screws 8 can drive the lateral moving frame 10 to move horizontally along the direction of the first lead screw 8. When the third motor 12 drives the second lead screw 11 to rotate, it can drive the lead screw slider 13 to move horizontally in the direction of the second lead screw 11. Second electric push rods 15 are vertically fixed on both sides of the upper surface of the horizontal fixed plate 14, and the movable rod bodies of the two second electric push rods 15 are both passed through the bottom of the horizontal fixed plate 14. The second electric push rods 15 can drive the two-stage suspended scraper mechanism below it to move up and down, so that the spatial movable mechanism can drive the two-stage suspended scraper mechanism to move in any direction, so as to facilitate the adjustment of its spatial position.

[0040] The movable end of the spatial movable mechanism is provided with a double-step suspended scraper mechanism for painting the plate. The double-step suspended scraper mechanism includes a tool holder 16, a paint scraper 17 and a paint injection tube 18. The tool holder 16 is fixedly connected to the bottom of the movable rod body of the two second electric push rods 15 and the paint scraper 17 is fixedly connected to the lower surface of the tool holder 16 in an inclined state. The interior of the paint scraper 17 is provided with a paint distribution chamber for storing paint and a plurality of equal flow holes are opened at the bottom of the horizontal equidistant. The outlet end of the paint injection tube 18 is fixedly connected to the upper surface of the paint scraper 17 and is communicated with the paint distribution chamber inside it. The inlet end of the paint injection tube 18 is passed through the upper surface of the tool holder 16 The paint scraper 17 is connected to the paint delivery pipe of the outside, and the paint can be injected into the paint injection pipe 18 through the external paint delivery pipe to fill the paint distribution chamber, and then discharged from the equal flow hole at the bottom of the paint scraper 17 to the surface of the plate, so that the paint can be evenly applied to the surface of the plate; a vertically downward laser rangefinder 19 is fixedly installed in the middle of the top of the paint scraper 17, and the laser rangefinder 19 can be used to adjust the paint scraper 17 to a position that fits the surface of the plate. The distance between the bottom end of the paint scraper 17 and the surface of the plate can be set according to the thickness of the paint to be applied; the double-stage suspended scraper mechanism also includes a third electric push rod 20, a connection Plate 21, spring 22, double-layer polyurethane scraper 23 and micro vibration motor 24, the number of the third electric push rod 20 is two and the two third electric push rods 20 are respectively fixedly installed horizontally on both sides of the lower surface of the tool holder 16, the connecting plate 21 is fixedly connected to the ends of the movable rods of the two third electric push rods 20, and the lateral spacing between the double-layer polyurethane scraper 23 and the paint scraper 17 can be adjusted by the third electric push rod 20, so as to facilitate adjusting the spacing between the two according to the brushing conditions of the paint, so as to make the paint more evenly covered on the plate; the number of springs 22 is several and several springs 22 are equidistantly fixedly connected to the lower surface of the connecting plate 21 The double-layer polyurethane scraper 23 is fixedly connected to the bottom end of several springs 22, and the micro-vibration motor 24 is fixedly installed in the middle of the upper surface of the double-layer polyurethane scraper 23. The operation of the micro-vibration motor 24 can drive the double-layer polyurethane scraper 23 to vibrate at a high frequency, thereby preventing the paint from accumulating below, eliminating scratches, and achieving mirror-level flatness; the bottom end of the double-layer polyurethane scraper 23 and the bottom end of the paint scraper 17 are in the same horizontal plane and the two have the same width. The paint scraper 17 performs a preliminary scraping of the paint discharged from the bottom, and the double-layer polyurethane scraper 23 with high-frequency vibration at the rear can further scrape the paint to ensure that the paint has mirror-level flatness.

[0041] A preheating pipe 44 for preheating the plate is fixedly installed on the side of the first support frame 2 away from the second support frame 3. The preheating pipe 44 is connected to the external hot air duct, so that hot air can be blown out from the bottom of the preheating pipe 44, thereby preliminarily preheating the upper surface of the plate, which can improve the adhesion of the paint on the plate. The inner top wall of the second support frame 3 is provided with an adaptive curing mechanism that can cure the paint surface on the surface of the plate. The adaptive curing mechanism includes an infrared lamp 25 and a temperature sensor 26. The number of infrared lamps 25 is several and the several infrared lamps 25 are fixedly installed on the inner top wall of the second support frame 3 at equal distances. A temperature sensor 26 is provided between every two adjacent infrared lamps 25 in a row, and several temperature sensors 26 are fixedly mounted on the top of the second support frame 3 with the detection direction facing vertically downward. When the painted plate moves to the bottom of the second support frame 3, the infrared lamp 25 can heat the paint surface to make the paint surface cure quickly and prevent the paint from sagging. The temperature sensors 26 in different parts can respectively detect the real-time temperature of the paint surface in the corresponding parts, so that the infrared lamp 25 can be zoned and independently temperature-controlled, and the curing power can be dynamically adjusted to prevent the paint surface from overheating and cracking, thereby ensuring that the physical properties of each paint film are consistent.

[0042] A wind cooling mechanism for quickly cooling the paint surface is provided on the side of the second support frame 3 away from the first support frame 2. The wind cooling mechanism includes a fourth electric push rod 27, a fixed frame 28, a fifth electric push rod 29, a rack 30, a spur gear 31 and an air knife 32. The fixed rod body of the fourth electric push rod 27 is vertically fixedly mounted on the side of the upper surface of the second support frame 3 away from the first support frame 2. The height of the air knife 32 can be adjusted by the fourth electric push rod 27. The fixed frame 28 is fixedly connected to the bottom of the movable rod body of the fourth electric push rod 27 and the fixed rod body of the fifth electric push rod 29 is horizontally fixedly mounted on the side of the fixed frame 28. A laser rangefinder 19 is fixedly mounted on the middle part of the fixed frame 28 near the side of the fifth electric push rod 29. The laser rangefinder 19 can detect the distance between the bottom of the air knife 32 and the paint surface in real time through the laser rangefinder 19, which is convenient for adjusting the height of the air knife 32. The rack 30 is fixedly connected to the end of the movable rod body of the fifth electric push rod 29 and The cam 32 is rotated to move the gears 31 so that the air can be blown out of the air duct 32 and the air can be blown in through the cam 32.

[0043] An electrostatic dust removal rod 5 is fixedly installed on the top of the third support frame 4 near the side of the second support frame 3. The electrostatic dust removal rod 5 is an existing well-known technology, so it will not be elaborated here. When the cooled plate passes under the electrostatic dust removal rod 5, the electrostatic dust removal rod 5 can remove the dust on the paint surface of the plate, thereby preventing the dust from being scattered on the paint surface and affecting the secondary painting; a four-way adjustment mechanism is provided in the middle of the top of the third support frame 4. The four-way adjustment mechanism includes a third lead screw 33, a fourth motor 34, a support plate 35 and a sixth electric push rod 36. The third lead screw 33 is horizontally connected to the top of the third support frame 4 and is connected to the output end of the fourth motor 34 through a spline. The fourth motor 34 is fixedly mounted on the third On the side of the support frame 4, the top of the third support frame 4 is fixedly connected with a guide rod 37 and one side of the support plate 35 is sleeved on the outside of the guide rod 37 and the other side is transmission-connected to the outside of the third screw 33. When the fourth motor 34 drives the third screw 33 to rotate, it can drive the support plate 35 to move horizontally along the axial direction of the third screw 33, so as to adjust the lateral position of the bottom floating grinding mechanism and the dust suction mechanism. The number of the sixth electric push rod 36 is two and the fixed rod bodies of the two sixth electric push rods 36 are respectively fixed vertically on both sides of the upper surface of the support plate 35. The height of the floating grinding mechanism and the dust suction mechanism can be adjusted by the sixth electric push rod 36 so that the bottom of the floating grinding mechanism fits the paint surface.

[0044] The movable end at the bottom of the four-way adjustment mechanism is provided with a floating grinding mechanism for removing raised spots on the paint surface. The floating grinding mechanism includes a lifting frame 38, a rotating shaft 39, a ceramic sanding belt 40 and a fifth motor 41. The lifting frame 38 is fixedly mounted on the bottom of the movable rod body of the sixth electric push rod 36 and the four corners of its upper surface are fixedly connected to auxiliary rods. The four auxiliary rods are all passed through the four corners of the support plate 35. Both sides of the interior of the lifting frame 38 are rotatably connected to the rotating shaft 39 and the ceramic sanding belt 40 is transmission-connected to the outside of the two rotating shafts 39. The fifth motor 41 is fixedly mounted on the side of the lifting frame 38 and the output end is connected to one of the rotating shafts 39 through a spline. The fifth motor 41 drives the rotating shaft 39 connected to it to rotate, which can enable the ceramic sanding belt 40 on its outside to rotate at high speed, thereby grinding the raised spots on the paint surface.

[0045] A dust suction mechanism that can absorb dust in time is provided on the side of the floating grinding mechanism close to the electrostatic dust removal rod 5. The dust suction mechanism includes a negative pressure dust suction pipe 42 and a diversion telescopic negative pressure pipe 43. The negative pressure dust suction pipe 42 is fixedly connected to the side of the lifting frame 38 close to the electrostatic dust removal rod 5 and the air inlet end of the negative pressure dust suction pipe 42 is inclined and corresponds to the lower surface of the ceramic sanding belt 40. A laser rangefinder 19 is fixedly installed on the middle part of the negative pressure dust suction pipe 42 away from the lifting frame 38. The diversion end of the diversion telescopic negative pressure pipe 43 is fixedly connected to the air outlet end at the top of the negative pressure dust suction pipe 42 and is connected to the inside thereof. The top end of the diversion telescopic negative pressure pipe 43 passes through the upper surface of the third support frame 4 and is connected to the external negative pressure pipe. The laser rangefinder 19 on the negative pressure dust suction pipe 42 can make the four directions The adjustment structure adjusts the ceramic sanding belt 40 to a position that fits the upper surface of the paint surface, with a grinding depth of less than 5μm, and only removes the raised spots on the paint surface. At the same time, the fifth motor 41 is operated to rotate the lower surface of the ceramic sanding belt 40 toward the side of the negative pressure dust suction pipe 42, and the external negative pressure pipe generates negative pressure suction on the negative pressure dust suction pipe 42. The plate is driven to move backward at a uniform speed through the transmission mechanism 6. The high-speed rotating ceramic sanding belt 40 can grind the raised spots on the paint surface to ensure the flatness of the paint surface. The dust generated by grinding will enter the negative pressure dust suction pipe 42 under the drive of the ceramic sanding belt 40. At the same time, the negative pressure suction generated in the negative pressure dust suction pipe 42 will also suck the dust into it, so that the dust can be fully recovered to avoid adhesion to the paint surface, ensuring that the subsequent paint has good adhesion.

[0046] The electrostatic dust removal rod 5, the first motor 601, the first electric push rod 704, the second motor 9, the third motor 12, the second electric push rod 15, the laser rangefinder 19, the third electric push rod 20, the micro vibration motor 24, the infrared lamp 25, the temperature sensor 26, the fourth electric push rod 27, the fifth electric push rod 29, the fourth motor 34, the sixth electric push rod 36 and the fifth motor 41 are all electrically connected to the external control unit and are electrically connected to the external circuit through wires.

[0047] A method for processing a device for painting the surface of a panel for furniture processing, comprising the following steps:

[0048] 1. Move the plate fixing mechanism 7 to the end near the first motor 601 through the conveying mechanism 6, and then place the plate to be painted on the plate fixing mechanism 7. The plate fixing mechanism 7 can clamp and fix the plate, and then the conveying mechanism 6 drives the plate to move backward at a uniform speed;

[0049] Second, when the plate moves to the bottom of the preheating tube 44, the preheating tube 44 will blow hot air of a set temperature to the upper surface of the plate to preheat the surface of the plate, thereby improving the adhesion of the paint. When the plate is completely moved to the bottom of the first support frame 2, the conveying mechanism 6 is controlled to pause, and then the measurement data of the laser rangefinder 19 is used to control the spatial activity mechanism to adjust the height of the double-step suspended scraper mechanism so that the distance between the bottom end of the double-step suspended scraper mechanism and the upper surface of the plate is maintained between 0.5mm and 1.5mm. Paint is injected into the paint scraper 17 through the external paint injection tube to keep the paint output of each equal flow hole consistent, and the micro-vibration motor 24 is operated to make the double-layer polyurethane scraper 23 generate high-frequency micro-vibration to prevent paint accumulation and improve leveling. At the same time, the double-step suspended scraper mechanism is controlled by the spatial activity mechanism to move horizontally at a uniform speed in the direction opposite to the moving direction of the plate to perform preliminary painting on the plate.

[0050] 3. After the upper surface of the plate is completely brushed with paint by the double-stage suspended scraper mechanism driven by the spatial activity mechanism, the plate is driven to continue to move backward by the conveying mechanism 6. When the plate enters under the second support frame 3, the adaptive curing mechanism can heat and cure the paint film surface on the plate to prevent sagging. The adaptive curing mechanism can control the temperature in different zones, which is convenient for dynamically adjusting the heating temperature according to the temperature of each part of the plate to prevent overheating and cracking. When the heating of the paint film is completed, the height and blowing angle of the air cooling mechanism can be adjusted to ensure that the air flow covers the entire range of the paint surface of the plate. A low-temperature and high-speed air flow is blown to the paint surface of the plate, and the paint film temperature is reduced to 25°C within 60 seconds, which can greatly reduce the waiting time between layers.

[0051] Fourth, after the paint surface of the plate is solidified and cooled, the plate is driven to continue to move backward by the conveying mechanism 6, and the electrostatic dust removal rod 5 on the third support frame 4 is operated to eliminate the dust adhesion between the layers. At the same time, the floating polishing mechanism is operated, and the lower surface of the floating polishing mechanism is adjusted to the position that fits the paint surface according to the laser rangefinder 19 on the side of the negative pressure dust suction pipe 42, and the paint surface is polished to remove the convex spots on the paint surface, and the dust suction mechanism can collect the dust from the polished part and recycle the dust immediately; when the floating polishing mechanism has completed polishing the corresponding paint surface, the horizontal position of the floating polishing mechanism is adjusted by the four-way adjustment mechanism to correspond to the unpolished area of ​​the paint surface, and the plate is returned to the position corresponding to the electrostatic dust removal rod 5 by the conveying mechanism 6, and moved backward at a uniform speed again, so that the floating polishing mechanism polishes the unpolished part, and the above operation is repeated until the paint surface of the plate is completely polished; at this point, a complete painting process is completed;

[0052] 5. The plate is then driven back to the initial position by the conveying mechanism 6, and the above steps 1 to 4 are repeated, and the plate is repeatedly painted multiple times according to the final required paint thickness.

[0053] The above description is only for illustrating the present invention. It should be understood that the present invention is not limited to the above embodiments, and various variations that conform to the concept of the present invention are within the scope of protection of the present invention.

Claims

1. A device for painting the surface of a board material used for furniture processing, comprising a conveyor line (1), a first support frame (2), a second support frame (3) and a third support frame (4), characterized in that: The top of the conveyor line (1) is provided with a movable platform capable of driving the plate to move, the first support frame (2), the second support frame (3) and the third support frame (4) are all fixedly mounted on the top of the conveyor line (1), the top of the first support frame (2) is provided with a space movable mechanism and the movable end of the space movable mechanism is provided with a double-step suspended scraper mechanism capable of painting the plate, a preheating pipe (44) capable of preheating the plate is fixedly mounted on the side of the first support frame (2) away from the second support frame (3), and the inner top wall of the second support frame (3) is provided with a An adaptive curing mechanism can cure the paint surface on the plate surface, and an air cooling mechanism that can quickly cool the paint surface is provided on the side of the interior away from the first support frame (2); an electrostatic dust removal rod (5) is fixedly installed on the top of the third support frame (4) on the side close to the second support frame (3); a four-way adjustment mechanism is provided in the middle of the top of the third support frame (4); and a floating polishing mechanism that can remove convex spots on the paint surface is provided at the movable end of the bottom of the four-way adjustment mechanism; a dust suction mechanism that can timely absorb dust is provided on the side of the floating polishing mechanism close to the electrostatic dust removal rod (5); Wherein, the spatial movable mechanism includes a second electric push rod (15), the double-stage suspended scraper mechanism includes a knife frame (16), a paint scraper (17) and a paint injection pipe (18), the knife frame (16) is fixedly connected to the bottom of the movable rod body of the second electric push rod (15) and the paint scraper (17) is fixedly connected to the lower surface of the knife frame (16) in an inclined state, the paint scraper (17) is provided with a paint distribution chamber for storing paint and a plurality of flow equalizing holes are opened at the bottom end horizontally and equidistantly, the outlet end of the paint injection pipe (18) is fixedly connected to the upper surface of the paint scraper (17) and communicated with the paint distribution chamber inside the paint scraper (17), the inlet end of the paint injection pipe (18) is passed through the upper surface of the knife frame (16) and communicated with the external paint delivery pipe, and a vertically downward-facing laser rangefinder (19) is fixedly installed in the middle of the top of the paint scraper (17); the double-stage suspended scraper mechanism The structure further includes a third electric push rod (20), a connecting plate (21), a spring (22), a double-layer polyurethane scraper (23) and a micro-vibration motor (24), wherein the number of the third electric push rods (20) is two and the two third electric push rods (20) are respectively fixedly mounted horizontally on both sides of the lower surface of the tool holder (16), the connecting plate (21) is fixedly connected to the ends of the movable rod bodies of the two third electric push rods (20), the number of the springs (22) is several and the several springs (22) are fixedly connected to the lower surface of the connecting plate (21) at equal distances, the double-layer polyurethane scraper (23) is fixedly connected to the bottom ends of the several springs (22), the micro-vibration motor (24) is fixedly mounted in the middle of the upper surface of the double-layer polyurethane scraper (23), the bottom end of the double-layer polyurethane scraper (23) and the bottom end of the paint scraper (17) are in the same horizontal plane and the two have the same width; The floating grinding mechanism comprises a lifting frame (38), a rotating shaft (39), a ceramic abrasive belt (40) and a fifth motor (41), wherein both sides of the interior of the lifting frame (38) are rotatably connected to the rotating shafts (39) and the ceramic abrasive belt (40) is transmission-connected to the outside of the two rotating shafts (39), and the fifth motor (41) is fixedly mounted on the side of the lifting frame (38) and the output end is connected to one of the rotating shafts (39) via a spline; The dust collection mechanism comprises a negative pressure dust collection pipe (42) and a diversion telescopic negative pressure pipe (43), wherein the negative pressure dust collection pipe (42) is fixedly connected to a side of the lifting frame (38) close to the electrostatic dust removal rod (5), and the air inlet end of the negative pressure dust collection pipe (42) is in an inclined state and corresponds to the lower surface of the ceramic sanding belt (40), and a laser rangefinder (19) is fixedly installed in the middle of the negative pressure dust collection pipe (42) away from the lifting frame (38), the diversion end of the diversion telescopic negative pressure pipe (43) is fixedly connected to the air outlet end at the top end of the negative pressure dust collection pipe (42) and is communicated with the interior thereof, and the top end of the diversion telescopic negative pressure pipe (43) is passed through the upper surface of the third support frame (4) and is communicated with the external negative pressure pipe.

2. A device for painting the surface of a board for furniture processing according to claim 1, characterized in that: The mobile platform is composed of a transmission mechanism (6) and a plate fixing mechanism (7), wherein the transmission mechanism (6) comprises a first motor (601), a pulley shaft (602) and a belt (603), wherein the number of the pulley shafts (602) is two and the two pulley shafts (602) are rotatably connected to the two sides of the top of the conveyor line (1), respectively, and the output end of the first motor (601) is connected to one of the pulley shafts (602) through a spline, and both sides of the two pulley shafts (602) are connected to the belt (603); the plate fixing mechanism (7) comprises a connecting block (701), a movable plate (702), a clamping frame (703) and a first electric push rod (704), the four corners of the lower surface of the movable plate (702) are fixedly connected with connecting blocks (701), and the connecting blocks (701) on both sides are fixedly connected to the upper surface of the corresponding belt (603), the two sides of the movable plate (702) are horizontally penetrated with symmetrically arranged clamping frames (703) and the middle parts of the two sides of the lower surface of the movable plate (702) are fixedly installed with first electric push rods (704), and the ends of the movable rod bodies of the two first electric push rods (704) are respectively fixedly connected to the middle parts of the two clamping frames (703) close to one end.

3. The device for painting the surface of a board material for furniture processing according to claim 1, characterized in that: The spatial activity mechanism comprises a first lead screw (8), a second motor (9), a transverse moving frame (10), a second lead screw (11) and a third motor (12), wherein the number of the first lead screws (8) is two and the two first lead screws (8) are horizontally rotatably connected to both sides of the top of the first support frame (2), the same end of the two first lead screws (8) is connected to a transmission belt and the output end of the second motor (9) is connected to one of the first lead screws (8) through a spline, both ends of the transverse moving frame (10) are connected to the outside of the two first lead screws (8) and the second lead screw (11) is horizontally rotatably connected to the inside of the transverse moving frame (10). The second lead screw (11) and the two first lead screws (8) are in a perpendicular state to each other, and the output end of the third motor (12) is connected to the second lead screw (11) through a spline; the spatial movable mechanism also includes a lead screw slider (13), a horizontal fixed plate (14) and a second electric push rod (15), the lead screw slider (13) is transmission-connected to the outside of the second lead screw (11) and is fixedly connected to the horizontal fixed plate (14) at the bottom, the second electric push rods (15) are vertically fixedly installed on both sides of the upper surface of the horizontal fixed plate (14), and the movable rod bodies of the two second electric push rods (15) are both passed through the bottom of the horizontal fixed plate (14).

4. A device for painting the surface of a board for furniture processing according to claim 1, characterized in that: The adaptive curing mechanism includes an infrared lamp (25) and a temperature sensor (26), the number of the infrared lamps (25) is several, and the several infrared lamps (25) are fixedly installed at equal distances on the inner top wall of the second support frame (3), a temperature sensor (26) is provided between every two adjacent infrared lamps (25) in the same row, and the several temperature sensors (26) are fixedly installed on the top of the second support frame (3) and the detection direction is vertically downward.

5. The device for painting the surface of a board material for furniture processing according to claim 1, characterized in that: The air cooling mechanism comprises a fourth electric push rod (27), a fixed frame (28), a fifth electric push rod (29), a rack (30), a spur gear (31) and an air knife (32), wherein the fixed rod body of the fourth electric push rod (27) is vertically fixedly mounted on a side of the upper surface of the second support frame (3) away from the first support frame (2), the fixed frame (28) is fixedly connected to the bottom of the movable rod body of the fourth electric push rod (27) and the fixed rod body of the fifth electric push rod (29) is horizontally fixedly mounted on the side of the fixed frame (28), and a laser measuring device is fixedly mounted on the middle part of the fixed frame (28) close to the side of the fifth electric push rod (29). The distance meter (19) is provided, wherein the rack (30) is fixedly connected to the end of the movable rod body of the fifth electric push rod (29) and is horizontally arranged below the fixed frame (28), the number of the spur gears (31) is two, and the two spur gears (31) are respectively fixedly connected to the two sides of the upper surface of the wind knife (32), and the two spur gears (31) and the two sides of the wind knife (32) are rotatably connected to the bottom of the fixed frame (28), the air inlet end of the wind knife (32) is connected to the external air supply duct, the number of the fifth electric push rod (29) and the rack (30) are both two, and the two spur gears (31) are respectively engaged with the two racks (30).

6. The device for painting the surface of a board material for furniture processing according to claim 1, characterized in that: The four-way adjustment mechanism comprises a third lead screw (33), a fourth motor (34), a support plate (35) and a sixth electric push rod (36), wherein the third lead screw (33) is horizontally rotatably connected to the top of the third support frame (4) and is connected to the output end of the fourth motor (34) through a spline, and the fourth motor (34) is fixedly mounted on the side of the third support frame (4), the top of the third support frame (4) is fixedly connected to a guide rod (37), and one side of the support plate (35) is sleeved on the outside of the guide rod (37) and the other side is transmission-connected to the outside of the third lead screw (33), and the number of the sixth electric push rod (36) is two, and the fixed rod bodies of the two sixth electric push rods (36) are respectively vertically fixedly mounted on both sides of the upper surface of the support plate (35).

7. A device for painting the surface of a board material for furniture processing according to claim 6, characterized in that: The lifting frame (38) is fixedly mounted on the bottom of the movable rod body of the sixth electric push rod (36) and the four corners of its upper surface are fixedly connected to auxiliary rods, and the four auxiliary rods are all inserted into the four corners of the support plate (35).

8. A processing method based on the surface painting device for furniture processing board material according to any one of claims 1 to 7, characterized in that: The following steps are involved:

1. Move the plate fixing mechanism (7) to the end close to the first motor (601) through the conveying mechanism (6), and then place the plate to be painted on the plate fixing mechanism (7). The plate fixing mechanism (7) can clamp and fix the plate, and then drive the plate to move backward at a uniform speed through the conveying mechanism (6); 2. When the plate moves to the bottom of the preheating tube (44), the preheating tube (44) blows hot air of a set temperature to the upper surface of the plate to preheat the surface of the plate, thereby improving the adhesion of the paint. When the plate is completely moved to the bottom of the first support frame (2), the conveying mechanism (6) is controlled to pause, and then the spatial movable mechanism is controlled by the measurement data of the laser rangefinder (19) to adjust the height of the double-stage suspended scraper mechanism so that the distance between the bottom end of the double-stage suspended scraper mechanism and the upper surface of the plate is maintained between 0.5mm and 1.5mm. Paint is injected into the paint scraper (17) through the external paint injection tube so that the amount of paint discharged from each equal flow hole is consistent, and the micro vibration motor (24) is operated to make the double-layer polyurethane scraper (23) generate high-frequency micro-vibration to prevent paint accumulation and improve leveling. At the same time, the double-stage suspended scraper mechanism is controlled by the spatial movable mechanism to move horizontally at a uniform speed in the direction opposite to the movement direction of the plate to perform preliminary painting on the plate.

3. After the upper surface of the plate is completely painted by the double-stage suspended scraper mechanism driven by the spatial movable mechanism, the plate is driven to continue to move backward by the conveying mechanism (6). When the plate enters the lower part of the second support frame (3), the adaptive curing mechanism can heat and cure the paint film surface on the plate to prevent sagging. The adaptive curing mechanism can control the temperature in different zones, so as to dynamically adjust the heating temperature according to the temperature of each part of the plate to prevent overheating and cracking. After the heating of the paint film is completed, the height and blowing angle of the air cooling mechanism can be adjusted to ensure that the air flow covers the entire range of the plate paint surface. A low-temperature and high-speed air flow is blown to the paint surface of the plate, and the paint film temperature is reduced to 25°C within 60 seconds, which can greatly reduce the waiting time between layers.

4. After the paint surface of the plate is solidified and cooled, the plate is driven to continue to move backward through the conveying mechanism (6), and the electrostatic dust removal rod (5) on the third support frame (4) is operated to eliminate the dust adhesion between the layers. At the same time, the floating polishing mechanism is operated, and the lower surface of the floating polishing mechanism is adjusted to the position that fits the paint surface according to the laser rangefinder (19) on the side of the negative pressure dust suction pipe (42), and the paint surface is polished to remove the convex spots on the paint surface. The dust suction mechanism can collect the dust on the polished part and recycle the dust immediately. When the floating polishing mechanism has completed polishing the corresponding paint surface, the horizontal position of the floating polishing mechanism is adjusted by the four-way adjustment mechanism so that it corresponds to the unpolished area of ​​the paint surface, and the plate is returned to the position corresponding to the electrostatic dust removal rod (5) through the conveying mechanism (6), and is moved backward at a uniform speed again, so that the floating polishing mechanism polishes the unpolished part. The above operation is repeated until the paint surface of the plate is polished once. At this point, a complete painting process is completed.

5. Then, the plate is driven back to the initial position by the conveying mechanism (6), and the above steps 1 to 4 are repeated, and the plate is repeatedly painted multiple times according to the final required paint thickness.

Images