Preparation method of surface conductive HDF and coating device thereof
By spraying polymer composite conductive powder coating on the surface of high-density fiberboard (HDF), the problem of insufficient conductivity of HDF is solved, and the conductivity improvement and coating efficiency are improved.
Patent Information
- Application Number
- CN202411875520.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-19
- Publication Date
- 2025-04-11
AI Technical Summary
High-density fiberboard (HDF) is insufficient in some application areas, especially in electronic equipment and building antistatic scenarios.
Using the method of segmented feeding and temperature control in different temperatures, epoxy resin, GMA type acrylate resin, poly(benzodifurandione) and other materials are mixed by melt extrusion, cooled, crushed and sieved to obtain polymer composite conductive powder coating, sprayed on the HDF surface by an electrostatic spray gun, and cured in a constant temperature electric heating drying channel.
It achieves improved conductivity of HDF surfaces, improves coating efficiency and uniformity, and is suitable for application scenarios where high conductivity is required.
Smart Images
Figure CN119793845A_ABST
Abstract
Description
Technical Field
[0001] The present application relates to the technical field of coating devices, and in particular to a method for preparing surface conductive HDF and a coating device thereof. Background Art
[0002] High-density fiberboard (HDF) is a man-made board made of wood fibers pressed under high pressure, and is widely used in furniture, flooring, construction and other industries. HDF has excellent mechanical properties, such as high strength, impact resistance, and smooth surface, but it has limitations in some special application fields (such as electronic equipment and anti-static building requirements), especially poor conductivity. Summary of the invention
[0003] One of the purposes of the present application is to provide a method for preparing surface conductive HDF and a coating device thereof.
[0004] To achieve the above objectives, the technical solution adopted in this application is: a method for preparing a surface conductive HDF, comprising the following steps:
[0005] S1: using a method of adding materials in sections and controlling the temperature in sections, epoxy resin, GMA type acrylate resin, poly(benzodifurandione), leveling agent, reinforcing agent, and curing agent-1 (polyurethane type epoxy curing agent) are mixed by melt extrusion, cooled, crushed, and sieved through a 300-mesh screen to obtain a polymer composite conductive powder coating;
[0006] S2: Spread the HDF flat on the work surface and spray it with an electrostatic spray gun. Send the sprayed sample into the constant temperature electric heating oven through the conveyor device, control the oven temperature and curing time, and place it at room temperature for a period of time after curing, and then conduct performance test.
[0007] To achieve the above purpose, another technical solution adopted in the present application is: a coating device for preparing surface conductive HDF, applied to the conductive HDF described in claim 1, comprising an electrostatic spray gun, a machine tool, a density board and a servo motor, an inner groove is opened inside the machine tool, a screw is horizontally arranged inside the inner groove, the screw is detachably connected to the servo motor, a movable seat is threadedly connected to the screw, a placement rack is provided on the movable seat, the upper end of the placement rack is rotatably connected to a rotating drum, the side edge of the rotating drum is meshedly connected to a worm, a gear is provided at the input end of the worm, the gear is meshedly connected to the rack in the inner groove, a clamping seat is provided on the rotating drum, the clamping seat is clamped on the side edge of the density board, a partition is slidably connected to the machine tool, the output end of the partition is overlapped on the top plate of the placement rack, and the top plate is located on both sides of the placement rack.
[0008] Preferably, a limit rod is provided in the inner groove of the machine tool, the limit rod is horizontally arranged in the inner groove, the limit rod and the screw rod are parallel to each other, the limit rod is inserted into the movable seat, the movable seat is located in the inner groove of the machine tool, and the movable seat and the placement racks on both sides are arranged in a U-shape as a whole.
[0009] Preferably, a vertical plate is provided in the inner groove of the machine tool, and the vertical plate is vertically arranged in the inner groove of the machine tool. A rack is provided on the vertical plate, and the rack is vertically arranged on the vertical plate. The vertical plate and the rack are arranged in a T shape as a whole, and the rack is arranged along the length of the vertical plate, and the rack faces the gear.
[0010] Preferably, a fixed rod is provided inside the inner groove of the machine tool, and a sliding rod is slidably connected to the fixed rod, the diameter of the sliding rod is the same as the inner diameter of the fixed rod, the sliding rod faces the placement frame, a fixed seat is fixedly connected to the sliding rod, a partition is detachably connected to the fixed seat, and the partition is overlapped above the placement end of the machine tool.
[0011] Preferably, an arc seat is arranged on the input end of the sliding rod, the arc seat is arranged in a semicircular shape as a whole, the arc seat corresponds to the top plate on the placement rack, the arc seat and the top plate are flush with each other, the top plate is arranged in a U-shape as a whole, and the hypotenuse of the top plate is located between the arc seats on both sides.
[0012] Preferably, a first spring is sleeved on the sliding rod between the fixing seat and the fixing rod, one end of the first spring is detachably connected to the fixing seat, and the other end of the first spring is detachably connected to the fixing rod.
[0013] Preferably, the gear is detachably connected with a linkage rod, the upper end of the linkage rod is connected with a worm, the worm is meshingly connected with a worm wheel, and the worm wheel is detachably connected to the rotating drum.
[0014] Preferably, the input end of the rotating drum is located outside the placement rack, a handle is disassembled and connected to the end of the rotating drum outside the placement rack, and a screw is rotatably connected inside the rotating drum.
[0015] Preferably, a screw barrel is threadedly connected to the screw rod, a clamp seat is welded to the screw barrel, and side rods are detachably connected to both ends of the clamp seat, and the side rods are slidably connected to the corresponding rotating barrel.
[0016] Compared with the prior art, the beneficial effects of this application are:
[0017] The present invention relates to a preparation method and coating device of surface conductive HDF. Before the conductive material is sprayed onto the plate body by an electrostatic spray gun, the plate body needs to be placed between the placement racks. When the handle is manually adjusted, the handle can drive the screw to rotate, and the clamp seat on the screw will move toward the side of the density board, so that the density board is clamped and fixed. When removing, the reverse operation is required, which facilitates the placement and fixation of the density board. After fixing, the servo motor is started, and the servo motor drives the moving seat to move as a whole. The placement rack is set on the moving seat, and the moving seat and the placement rack can move at the same time, and the density board on the placement rack will follow the The placement rack moves, and the density board is in a moving state when the electrostatic spray gun sprays toward it, so that the conductive material can be coated on various parts of the density board. The rotating drum on the placement rack is connected to the linkage rod, and the output end of the linkage rod is engaged with the rack. When the moving seat moves, the rack will rotate due to the rack, and the linkage rod will drive the rotating drum to rotate, and the clamping seat can drive the density board to flip, and the density board will also flip during the movement, so that both sides of the density board can be coated, thereby improving the coating efficiency and making the coating more uniform, and no uneven intersections will be caused by intermittent coating.
[0018] The method for preparing a surface conductive HDF and its coating device are as follows: a rotating drum is arranged on a placement rack, a worm wheel is arranged on the rotating drum, the worm wheel can mesh with the worm, the worm can drive the rotating drum to rotate as a whole when the worm is driven by a linkage rod, and the clamping seat can be driven to rotate as a whole when the rotating drum rotates as a whole, the clamping seat is arranged on a screw rod, and the screw rod is rotatably arranged in the rotating drum, and the screw rod can move independently, so that the movement of the rotating drum and the screw rod will not be restricted by each other, and a partition is arranged on the machine tool at the placement rack position, and the partitions are respectively located on both sides of the placement rack, and when the partitions on both sides are away from the placement rack, the partitions will overlap with each other, thereby blocking the space of the placement rack moving path, avoiding the accumulation of coating materials for a long time, and the partition can be used to block the space, thereby avoiding To accelerate the aging of components, a fixed seat is arranged on the partition, and the fixed seat is arranged on the sliding rod. The sliding rod and the fixed seat are an integral whole. The sliding rod is slidably connected in the fixed rod of the machine tool. An arc seat is arranged at the input end of the sliding rod, and the arc seat corresponds to the top plate. The top plate protrudes outward on the placement rack. The top plate will first contact the arc seat, and the arc seat will be pushed by the top plate and move along the top plate to the two sides of the placement rack, thereby moving the partition to the two sides of the placement rack to avoid hindering the movement of the placement rack. A first spring is sleeved on the sliding rod between the fixed seat and the fixed rod. The first spring can push the fixed seat to reset when the arc seat is not pushed, and the partition can reset and overlap, thereby realizing closure. Through the setting, the components can be protected in a wide range, thereby increasing the service life of the components. BRIEF DESCRIPTION OF THE DRAWINGS
[0019] Figure 1 The overall structure of the present invention is shown in FIG. Figure 1 .
[0020] Figure 2 The overall structure of the present invention is shown in FIG. Figure 2 .
[0021] Figure 3 It is a schematic diagram of the structure of the top plate in the present invention.
[0022] Figure 4 It is a schematic diagram of the internal structure of the present invention.
[0023] Figure 5 For the present invention Figure 2 Schematic diagram of the enlarged structure of area A in the middle.
[0024] Figure 6 For the present invention Figure 4 Schematic diagram of the enlarged structure of area B in the middle.
[0025] Figure 7 For the present invention Figure 4 Schematic diagram of the enlarged structure of the middle C area.
[0026] In the figure: 1. machine tool; 2. servo motor; 3. partition; 4. density board; 5. electrostatic spray gun; 6. placement rack; 7. handle; 8. lead screw; 9. limit rod; 10. moving seat; 11. fixed rod; 12. vertical plate; 13. rack; 14. arc seat; 15. fixed seat; 16. first spring; 17. slide rod; 18. top plate; 19. inner groove; 20. gear; 21. linkage rod; 22. rotating drum; 23. worm gear; 24. screw; 25. screw barrel; 26. clamping seat; 27. side rod; 28. worm. DETAILED DESCRIPTION
[0027] Below, the present application is further described in conjunction with specific implementation methods. It should be noted that, under the premise of no conflict, the various embodiments or technical features described below can be arbitrarily combined to form new embodiments.
[0028] In the description of the present application, it should be noted that directional words, such as the terms "center", "lateral", "longitudinal", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", etc., indicating directions and positional relationships are based on the directions or positional relationships shown in the accompanying drawings, which are only for the convenience of narrating the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and cannot be understood as limiting the specific scope of protection of the present application.
[0029] It should be noted that the terms "first", "second", etc. in the description and claims of the present application are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence.
[0030] like Figures 1 to 7 As shown, a method for preparing a surface conductive HDF comprises the following steps:
[0031] S1: using a method of adding materials in sections and controlling the temperature in sections, epoxy resin, GMA type acrylate resin, poly(benzodifurandione), leveling agent, reinforcing agent, and curing agent-1 (polyurethane type epoxy curing agent) are mixed by melt extrusion, cooled, crushed, and sieved through a 300-mesh screen to obtain a polymer composite conductive powder coating;
[0032] S2: Spread the HDF on the work surface and spray it with an electrostatic spray gun 5. Send the sprayed sample into a constant temperature electric heating oven through a conveyor device, control the oven temperature and curing time, and place it at room temperature for a period of time after curing, and then conduct a performance test.
[0033] like Figures 1 to 7 As shown, a coating device for preparing surface conductive HDF provided by the present invention is applied to the conductive HDF of claim 1, comprising an electrostatic spray gun 5, a machine tool 1, a density board 4 and a servo motor 2, an inner groove 19 is opened inside the machine tool 1, a screw 8 is horizontally arranged inside the inner groove 19, the screw 8 is detachably connected to the servo motor 2, a movable seat 10 is threadedly connected to the screw 8, a placement rack 6 is arranged on the movable seat 10, the upper end of the placement rack 6 is rotatably connected to a rotating drum 22, the side edge of the rotating drum 22 is meshedly connected to a worm 28, a gear 20 is arranged at the input end of the worm 28, the gear 20 is meshedly connected to the rack 13 in the inner groove 19, a clamping seat 26 is arranged on the rotating drum 22, and the clamping seat 26 is clamped on the side edge of the density board 4, a partition 3 is slidably connected to the machine tool 1, and the output end of the partition 3 is overlapped on the top plate 18 of the placement rack 6, and the top plate 18 is located on both sides of the placement rack 6. By installing the clamping seat 26 on the placement rack 6, the clamping seat 26 can clamp and fix the density board 4 through manual adjustment. After fixing, start the servo motor 2, and the moving seat 10 will drive the placement rack 6 to move along the screw rod 8. When the moving seat 10 moves, the gear 20 will move along the rack 13, and the linkage rod 21 on the gear 20 can drive the rotating drum 22 to rotate, and the clamping seat 26 can drive the density board 4 to flip, thereby realizing coating of different positions of the density board 4, thereby improving the coating efficiency.
[0034] As an optional solution, in the embodiment of the present invention, a limit rod 9 is provided in the inner groove 19 of the machine tool 1, the limit rod 9 is horizontally provided in the inner groove 19, the limit rod 9 and the screw rod 8 are parallel to each other, the limit rod 9 is plugged into the moving seat 10, the moving seat 10 is located in the inner groove 19 of the machine tool 1, and the moving seat 10 and the placement racks 6 on both sides are arranged in a U-shape as a whole. The setting of the limit rod 9 can limit the moving seat 10, and the moving seat 10 will not rotate with the screw rod 8, thereby ensuring that the moving seat 10 moves along the screw rod 8.
[0035] A vertical plate 12 is arranged in the inner groove 19 of the machine tool 1, and the vertical plate 12 is vertically arranged in the inner groove 19 of the machine tool 1. A rack 13 is arranged on the vertical plate 12, and the rack 13 is vertically arranged on the vertical plate 12. The vertical plate 12 and the rack 13 are arranged in a T shape as a whole, and the rack 13 is arranged along the length of the vertical plate 12, and the rack 13 faces the gear 20. The rack 13 can be fixed by the vertical plate 12, and the rack 13 can stably mesh with the gear 20, so that the gear 20 can move along the rack 13.
[0036] During implementation, before the conductive material is sprayed onto the board body through the electrostatic spray gun 5, the board body needs to be placed between the placement racks 6. When the handle 7 is manually adjusted, the handle 7 can drive the screw 24 to rotate, and the clamping seat 26 on the screw 24 will move to the side of the density board 4, thereby clamping and fixing the density board 4. When removing it, the reverse operation can be performed, which facilitates the placement and fixation of the density board 4. After fixation, the servo motor 2 is started, and the servo motor 2 will drive the moving seat 10 to move as a whole. The placement rack 6 is set on the moving seat 10, and the moving seat 10 and the placement rack 6 will move at the same time. The density board 4 on the placement rack 6 will move with the placement rack 6, and the electrostatic When the spray gun 5 sprays toward the density board 4, the density board 4 is in a moving state, and the conductive material can be coated on various parts of the density board 4. The rotating drum 22 on the placement rack 6 is connected to the linkage rod 21, and the output end of the linkage rod 21 is engaged with the rack 13. When the movable seat 10 moves, the rack 13 will rotate due to the rack 13, and the linkage rod 21 will drive the rotating drum 22 to rotate, and the clamping seat 26 can drive the density board 4 to flip over, and the density board 4 will also flip over during the movement, so that both sides of the density board 4 can be coated, thereby improving the coating efficiency and making the coating more uniform, and no uneven intersection will be caused by intermittent coating.
[0037] As an optional solution, in the embodiment of the present invention, a fixed rod 11 is provided inside the inner groove 19 of the machine tool 1, and a slide bar 17 is slidably connected to the fixed rod 11. The diameter of the slide bar 17 is the same as the inner diameter of the fixed rod 11. The slide bar 17 faces the placement rack 6. The slide bar 17 is fixedly connected to the fixed seat 15. The partition 3 is detachably connected to the fixed seat 15, and the partition 3 is overlapped above the placement end of the machine tool 1. By setting the fixed rod 11, the slide bar 17 can move at the position of the fixed rod 11, and the slide bar 17 can be extended and retracted inward and outward along the fixed rod 11. When the slide bar 17 is extended and retracted inward and outward, the partition 3 on the slide bar 17 will move along the machine tool 1, thereby realizing the opening and closing of the partition 3. When the partition 3 is opened, it will not hinder the movement of the placement rack 6, and when it is closed, it can protect the components.
[0038] The input end of the slide bar 17 is provided with an arc seat 14, which is semicircular in shape as a whole, corresponds to the top plate 18 on the placement frame 6, is flush with the top plate 18, and is U-shaped in shape as a whole, with the hypotenuse of the top plate 18 located between the two side arc seats 14. The top plate 18 can push the arc seat 14 to extend and retract to both sides by the setting of the arc seat 14, and the partition 3 will be opened when the top plate 18 pushes the arc seat 14 toward the position of the fixed rod 11.
[0039] A first spring 16 is sleeved on the slide bar 17 between the fixed seat 15 and the fixed rod 11, one end of the first spring 16 is detachably connected to the fixed seat 15, and the other end of the first spring 16 is detachably connected to the fixed rod 11. By setting the first spring 16, the first spring 16 will push the fixed seat 15 in the opposite direction, and after the arc seat 14 is not pushed by the top plate 18, the first spring 16 will push the fixed seat 15 in the opposite direction, and the partition 3 can overlap.
[0040] The gear 20 is detachably connected with a linkage rod 21, and the upper end of the linkage rod 21 is connected with a worm 28, which is meshed with a worm wheel 23, and the worm wheel 23 is detachably connected to the rotating drum 22. The worm wheel 23 on the rotating drum 22 can be meshed with the worm 28, and the worm 28 can drive the worm wheel 23 to rotate, thereby rotating the rotating drum 22.
[0041] The input end of the drum 22 is located outside the rack 6, and a handle 7 is detachably connected to the end of the drum 22 outside the rack 6, and a screw 24 is rotatably connected inside the drum 22. The screw 24 can be controlled to rotate by the handle 7, and the drum 25 moves along the screw 24 when the screw 24 rotates.
[0042] The screw rod 24 is threadedly connected with a screw barrel 25, and a clamping seat 26 is welded on the screw barrel 25. The two ends of the clamping seat 26 are detachably connected with side rods 27, and the side rods 27 are slidably connected to the corresponding rotating drum 22. The setting of the side rods 27 can limit the screw barrel 25, and the screw barrel 25 will not rotate with the screw rod 24, so that the clamping seat 26 can clamp the density board 4.
[0043] In practice, by arranging a rotating drum 22 on the placement rack 6, a worm gear 23 is arranged on the rotating drum 22, and the worm gear 23 can mesh with the worm 28. When the worm 28 is driven by the linkage rod 21, the rotating drum 22 can be driven to rotate as a whole. When the rotating drum 22 rotates as a whole, the clamping seat 26 can be driven to rotate as a whole. The clamping seat 26 is arranged on the screw rod 24, and the screw rod 24 is rotatably arranged in the rotating drum 22. The screw rod 24 can move independently, so that the activities of the rotating drum 22 and the screw 24 are not restricted to each other. The machine tool 1 at the position of the placement rack 6 is provided with partitions 3, and the partitions 3 are respectively located on both sides of the placement rack 6. When the partitions 3 on both sides are away from the placement rack 6, the partitions 3 will overlap with each other, thereby blocking the space of the moving path of the placement rack 6, avoiding the accumulation of coating materials for a long time, and the partitions 3 can be used to block the space, thereby avoiding accelerated aging of components. The partitions 3 are provided with fixed The fixed seat 15 is arranged on the slide bar 17. The slide bar 17 and the fixed seat 15 are a whole. The slide bar 17 is slidably connected in the fixed rod 11 of the machine tool 1. The input end of the slide bar 17 is provided with an arc seat 14. The arc seat 14 corresponds to the top plate 18. The top plate 18 protrudes on the placement frame 6. The top plate 18 will first contact the arc seat 14. The arc seat 14 will be pushed by the top plate 18 and move along the top plate 18 to the two sides of the placement frame 6, so that the partition 3 moves to the two sides of the placement frame 6 to avoid hindering the movement of the placement frame 6. The first spring 16 is sleeved on the slide bar 17 between the fixed seat 15 and the fixed rod 11. The first spring 16 can push the fixed seat 15 to reset when the arc seat 14 is not pushed, and the partition 3 can reset and overlap, thereby realizing closure. By setting up, the components can be protected in a wide range, thereby improving the service life of the components.
[0044] The working principle of the present invention is as follows: before the conductive material is sprayed onto the board body through the electrostatic spray gun 5, the board body needs to be placed between the placement racks 6. When the handle 7 is manually adjusted, the handle 7 can drive the screw rod 24 to rotate, and the clamping seat 26 on the screw rod 24 will move toward the side of the density board 4, thereby clamping and fixing the density board 4. When removing it, the reverse operation can be performed, which facilitates the placement and fixation of the density board 4. After fixation, the servo motor 2 is started, and the servo motor 2 will drive the moving seat 10 to move as a whole. The placement rack 6 is set on the moving seat 10, and the moving seat 10 and the placement rack 6 will move at the same time. The density board 4 on the placement rack 6 will move with the placement rack 6. When the electrostatic spray gun 5 is sprayed onto the density board 4, the density board 4 is in a moving state, and the conductive material can be applied to the density board 4. At each place of the degree plate 4, the rotating drum 22 on the placement frame 6 is connected to the linkage rod 21, and the output end of the linkage rod 21 is meshed with the rack 13. When the movable seat 10 moves, the rack 13 will rotate due to the rack 13, and the linkage rod 21 will drive the rotating drum 22 to rotate, and the clamping seat 26 can drive the density board 4 to turn over, and the density board 4 will also turn over during the movement, so that both sides of the density board 4 can be coated, thereby improving the coating efficiency and making the coating more uniform, and the intersection will not be uneven due to intermittent coating. By arranging the rotating drum 22 on the placement frame 6, a worm gear 23 is arranged on the rotating drum 22, and the worm gear 23 can be meshed with the worm 28. When the worm 28 is driven by the linkage rod 21, it can drive the rotating drum 22 to rotate as a whole. When the drum 22 rotates as a whole, the clamping seat 26 can be driven to rotate as a whole. The clamping seat 26 is arranged on the screw rod 24, and the screw rod 24 is rotatably arranged in the drum 22. The screw rod 24 can move independently, so that the movements of the drum 22 and the screw rod 24 will not be restricted by each other. A partition 3 is provided on the machine tool 1 at the position of the placement frame 6. The partitions 3 are respectively located on both sides of the placement frame 6. When the partitions 3 on both sides are away from the placement frame 6, the partitions 3 will overlap with each other, thereby blocking the space of the movement path of the placement frame 6 to avoid the accumulation of coating materials for a long time. The partition 3 can be used to block the space, thereby avoiding accelerated aging of the components. A fixed seat 15 is provided on the partition 3, and the fixed seat 15 is arranged on the slide rod 17. The slide rod 17 and the fixed seat 15 are a whole. 17 is slidably connected in the fixed rod 11 of the machine tool 1, and an arc seat 14 is provided at the input end of the slide rod 17, and the arc seat 14 corresponds to the top plate 18, and the top plate 18 protrudes on the placement frame 6. The top plate 18 will first contact the arc seat 14, and the arc seat 14 will be pushed by the top plate 18 and move to the two sides of the placement frame 6 along the top plate 18, so that the partition 3 moves to the two sides of the placement frame 6 to avoid hindering the movement of the placement frame 6. A first spring 16 is sleeved on the slide rod 17 between the fixed seat 15 and the fixed rod 11. The first spring 16 can push the fixed seat 15 to reset when the arc seat 14 is not pushed, and the partition 3 can reset and overlap, thereby realizing closure. Through the setting, the components can be protected in a wide range, thereby improving the service life of the components.
[0045] The above describes the basic principles, main features and advantages of the present application. Those skilled in the art should understand that the present application is not limited by the above embodiments, and the above embodiments and the specification only describe the principles of the present application. The present application may have various changes and improvements without departing from the spirit and scope of the present application, and these changes and improvements fall within the scope of the present application for which protection is sought. The scope of protection claimed by the present application is defined by the attached claims and their equivalents.
Claims
1. A method for preparing a surface conductive HDF, characterized in that: The following steps are involved: S1: using a method of adding materials in sections and controlling the temperature in sections, epoxy resin, GMA type acrylate resin, poly(benzodifurandione), leveling agent, reinforcing agent, and curing agent-1 (polyurethane type epoxy curing agent) are mixed by melt extrusion, cooled, crushed, and sieved through a 300-mesh screen to obtain a polymer composite conductive powder coating; S2: Spread the HDF flat on the work surface and spray it with an electrostatic spray gun (5). Send the sprayed sample into a constant temperature electric heating oven through a conveyor device, control the oven temperature and curing time, and place it at room temperature for a period of time after curing, and then conduct performance testing.
2. A coating device for preparing a surface conductive HDF, applied to the conductive HDF according to claim 1, characterized in that: The invention comprises an electrostatic spray gun (5), a machine tool (1), a density board (4) and a servo motor (2). The machine tool (1) is provided with an inner groove (19), a screw rod (8) is arranged horizontally inside the inner groove (19), the screw rod (8) is detachably connected to the servo motor (2), a movable seat (10) is threadedly connected to the screw rod (8), a placing frame (6) is arranged on the movable seat (10), the upper end of the placing frame (6) is rotatably connected to a rotating drum (22), and the side edge of the rotating drum (22) is engaged with the rotating drum (22). A worm (28) is connected to the rotating drum (22), and a gear (20) is provided at the input end of the worm (28). The gear (20) is meshedly connected to the rack (13) in the inner groove (19). A clamping seat (26) is provided on the rotating drum (22), and the clamping seat (26) is clamped on the side edge of the density board (4). A partition (3) is slidably connected to the machine tool (1), and the output end of the partition (3) is overlapped on the top plate (18) of the placement rack (6), and the top plate (18) is located on both sides of the placement rack (6).
3. A coating device for preparing surface conductive HDF according to claim 2, characterized in that: A limit rod (9) is arranged in the inner groove (19) of the machine tool (1); the limit rod (9) is arranged horizontally in the inner groove (19); the limit rod (9) and the screw rod (8) are parallel to each other; the limit rod (9) is plugged into a movable seat (10); the movable seat (10) is located in the inner groove (19) of the machine tool (1); and the movable seat (10) and the placement racks (6) on both sides are arranged in a U-shape as a whole.
4. A coating device for preparing surface conductive HDF as claimed in claim 2, characterized in that: A vertical plate (12) is arranged in the inner groove (19) of the machine tool (1), the vertical plate (12) is vertically arranged in the inner groove (19) of the machine tool (1), a rack (13) is arranged on the vertical plate (12), the rack (13) is vertically arranged on the vertical plate (12), the vertical plate (12) and the rack (13) are arranged in a T-shape as a whole, the rack (13) is arranged along the length of the vertical plate (12), and the rack (13) faces the gear (20).
5. A coating device for preparing surface conductive HDF as claimed in claim 2, characterized in that: A fixed rod (11) is arranged inside the inner groove (19) of the machine tool (1), a sliding rod (17) is slidably connected to the fixed rod (11), the diameter of the sliding rod (17) is the same as the inner diameter of the fixed rod (11), the sliding rod (17) faces the placement frame (6), a fixed seat (15) is fixedly connected to the sliding rod (17), a partition (3) is detachably connected to the fixed seat (15), and the partition (3) is overlapped above the placement end of the machine tool (1).
6. A coating device for preparing a surface conductive HDF as claimed in claim 5, characterized in that: An arc seat (14) is arranged on the input end of the slide bar (17), the arc seat (14) is arranged in a semicircular shape as a whole, the arc seat (14) corresponds to the top plate (18) on the placement rack (6), the arc seat (14) and the top plate (18) are flush with each other, the top plate (18) is arranged in a U shape as a whole, and the hypotenuse of the top plate (18) is located between the arc seats (14) on both sides.
7. A coating device for preparing a surface conductive HDF as claimed in claim 5, characterized in that: A first spring (16) is sleeved on the sliding rod (17) between the fixing seat (15) and the fixing rod (11); one end of the first spring (16) is detachably connected to the fixing seat (15), and the other end of the first spring (16) is detachably connected to the fixing rod (11).
8. A coating device for preparing a surface conductive HDF as claimed in claim 2, characterized in that: The gear (20) is detachably connected to a linkage rod (21), the upper end of the linkage rod (21) is connected to a worm (28), the worm (28) is meshingly connected to a worm wheel (23), and the worm wheel (23) is detachably connected to a rotating drum (22).
9. A coating device for preparing a surface conductive HDF as claimed in claim 8, characterized in that: The input end of the rotating drum (22) is located outside the placement rack (6), a handle (7) is detachably connected to the end of the rotating drum (22) outside the placement rack (6), and a screw rod (24) is rotatably connected inside the rotating drum (22).
10. A coating device for preparing a surface conductive HDF as claimed in claim 9, characterized in that: The screw rod (24) is threadedly connected with a screw barrel (25), a clamping seat (26) is welded on the screw barrel (25), and the two ends of the clamping seat (26) are detachably connected with side rods (27), and the side rods (27) are slidably connected to the corresponding rotating drum (22).