Solid wood furniture surface spraying equipment and spraying method

Abstract

The invention relates to the field of spraying, in particular to solid wood furniture surface spraying equipment and a spraying method.The spraying equipment is arranged above a conveyor, a spraying chamber allowing the spraying equipment to be installed therein is arranged on the conveyor, the spraying equipment comprises a spraying pipe and a multi-axis moving assembly, and the multi-axis moving assembly is provided with a moving frame allowing the spraying pipe to be fixed; the movable frame is provided with a material injection channel communicated with the spraying pipe, the two sides of the spraying pipe are each provided with a wiping assembly, a spraying opening is formed in the lower end of the spraying pipe, through holes are formed in the surface, right opposite to each wiping assembly, of the spraying pipe, and the spraying pipe is provided with a switching assembly used for switching the opening and closing states of the spraying openings and the through holes. Through the two stages of primary primer spraying of the spraying pipe and subsequent coating wiping, the coating permeates into wood, the wood is dredged through dehumidification treatment, plant pigment can stay in wood fibers, wood color fading is avoided, and the bright effect of the color is guaranteed.

Description

Technical Field

[0001] The invention relates to the field of spraying, and in particular to a surface spraying device and a spraying method for solid wood furniture. Background Art

[0002] At present, when processing solid wood furniture, in order to ensure the service life of solid wood furniture, paint is usually sprayed on the surface of solid wood furniture. Most existing spraying devices generally convey wood into a spraying room through a conveyor belt to spray the wood surface. However, since the wood on the conveyor belt cannot be turned over, the wood can only be sprayed on one side when entering the spraying room. When spraying the other side of the wood, the wood needs to be placed on the top of the conveyor belt again to completely spray the wood surface, which reduces the spraying efficiency.

[0003] The currently disclosed Chinese patent CN221674646U is a solid wood furniture processing paint spraying device, including a spraying device for spraying wood, wherein a turning device for turning over the wood is arranged inside the spraying device; the turning device comprises a fixed plate, a driving assembly, a double-axis cylinder and a movable column, wherein the bottom of the fixed plate and the bottom of the driving assembly are respectively fixedly connected to two ends of one side of the inner wall of the spraying device, the output shaft of the driving assembly is fixedly connected to one end of the movable column, the end of the movable column away from the driving assembly is movably connected to the end of the fixed plate close to the driving assembly, two connecting blocks are fixedly arranged on one side of the double-axis cylinder, and the two connecting blocks are respectively fixed at two ends of the movable column, the output ends at both ends of the double-axis cylinder are fixedly provided with clamping plates for limiting the wood, the two clamping plates are provided with limiting grooves on opposite sides, and a plurality of limiting plates of different thicknesses are arranged on one side of the inner wall of the limiting groove, and a plurality of protruding blocks are arranged on the surfaces of the plurality of limiting plates.

[0004] The above-mentioned spraying device drives the movable column to rotate through the driving assembly, and when the movable column rotates, it drives the two connecting blocks and the double-axis cylinder to flip, thereby turning over the clamped wood. However, during the spraying process, the spraying device does not penetrate the color into the wood, and the color loses its brightness over time, resulting in poor spraying effect. Therefore, there is a need for a spraying device that can penetrate the paint into the wood. Summary of the invention

[0005] In view of the problems existing in the prior art, a solid wood furniture surface spraying device is provided. The present invention enables the paint to penetrate into the wood through two stages of preliminary primer spraying and subsequent paint wiping by a nozzle, thereby improving the coverage and adhesion of the paint, reducing the waste of the paint and improving the spraying efficiency.

[0006] In order to solve the problems of the prior art, the present invention provides a surface spraying device for solid wood furniture, which is arranged above a conveyor. The conveyor is provided with a spraying chamber for installing the spraying device therein. The spraying device includes a nozzle and a multi-axis moving component. The multi-axis moving component has a moving frame for fixing the nozzle, and the moving frame is provided with an injection channel connected to the nozzle. Both sides of the nozzle are provided with a wiping component for wiping the paint on the wood surface so that the paint penetrates the wood. The lower end of the nozzle is provided with a nozzle, and the surface of the nozzle facing each wiping component is provided with a through hole. The nozzle is provided with a switching component for switching the opening and closing states of the nozzle and the through hole. When the nozzle first performs preliminary primer spraying on the wood surface, the nozzle on the nozzle is in an open state under the action of the switching component, and the through hole is in a closed state at the same time, so that the paint is sprayed out in an atomized form. When the nozzle subsequently wipes the paint on the wood surface, the nozzle on the nozzle is in a closed state under the action of the switching component, and the through hole is in an open state at the same time, so that the paint is filled on the wiping component.

[0007] Preferably, the wiping assembly includes a roller and a sponge layer fixedly mounted on the roller, and the movable frame has an axis connecting plate for rotationally connecting the rollers of each wiping assembly, and the rollers are arranged on the axis connecting plate. When the multi-axis movable assembly drives the rollers to move so that the sponge layer is pressed against the surface of the wood and performs the wiping action, the paint gradually penetrates into the wood.

[0008] Preferably, a material trough extending toward the sponge layer is fixedly provided on the nozzle, and the material trough is a downward inclined trough structure, and the end of the material trough extending toward the sponge layer is in contact with the sponge layer. When the paint flows out of the through hole, the paint flows along the material trough into the sponge layer for absorption by the sponge layer.

[0009] Preferably, a rotating motor for driving the roller to rotate is fixed on the shaft connecting plate. When the roller rotates, the sponge layer rotates with the roller and is pressed on the wood surface so that the paint is squeezed out of the sponge layer and coated on the wood surface.

[0010] Preferably, a plurality of material holes are provided on the surface of the drum, and a feed port is provided at one end of the drum relative to the rotating motor. The paint enters the drum through the feed port, and the paint penetrates into the sponge layer through the material holes, so that the sponge layer quickly absorbs the paint.

[0011] Preferably, the switching assembly includes a sleeve mounted on the nozzle and a ejector pin inserted in the nozzle, the sleeve can move along the axial direction of the nozzle, the movable frame is provided with a linear driver for driving the sleeve to move, the ejector pin is fixedly connected to the movable frame, the diameter of the ejector pin is smaller than the inner diameter of the nozzle, the lower end of the nozzle has an atomizing nozzle slidably connected thereto, the nozzle is arranged at the end of the atomizing nozzle, the sleeve is fixedly connected to the atomizing nozzle, and when the sleeve moves downward, the atomizing nozzle synchronously moves downward and gradually moves away from the ejector pin, so that the through hole is in a gradually closed state, and the nozzle is synchronously in a gradually opened state.

[0012] Preferably, the inner wall of the sleeve has a sealing gasket layer in contact with the outer wall of the nozzle.

[0013] Preferably, the linear drive has an internal threaded ring sleeve mounted on the sleeve, a bearing is connected between the internal threaded ring sleeve and the movable frame, the outer wall of the sleeve has an external thread matched with the internal threaded ring sleeve, the lower end of the sleeve has a downwardly extending clamping strip, and the movable frame is provided with a clamping groove matched with the clamping strip, and when the sleeve is driven to move, the sleeve is in a linear moving state relative to the nozzle.

[0014] On the other hand, the present invention also provides a method for spraying on the surface of solid wood furniture, which specifically adopts the following technical scheme.

[0015] A method for spraying the surface of solid wood furniture comprises the following steps: S1, carbonizing the wood at high temperature in vacuum and cooling it; S2, spraying the paint prepared by alcohol and plant pigment on the wood surface; S3. Wait for the alcohol in the wood to dissipate naturally, so that the plant pigments remain in the wood fibers.

[0016] Preferably, step S1 in the above-mentioned spraying method further comprises subjecting the carbonized wood to a moisture regain treatment, and the specific treatment method is as follows: subjecting the carbonized wood to a natural moisture regain for 7 days, and subjecting the wood to a dehumidification treatment after the moisture regain to reduce the moisture content of the wood and to dredge the wood ducts of the wood.

[0017] Compared with the prior art, the present invention has the following beneficial effects: 1. The present invention not only ensures the initial adhesion of the primer through the two stages of preliminary primer spraying and subsequent paint wiping by the nozzle, but also allows the paint to penetrate into the wood through the synergistic effect of the atomized spraying and wiping components, thereby improving the coverage and adhesion of the paint, reducing the waste of the paint, and improving the spraying efficiency. In addition, the paint in this embodiment is modulated by alcohol and plant pigments, and enters the wood conduit of the wood through penetration. After the alcohol evaporates, the plant pigments remain in the wood fibers, thereby avoiding the problem of fading. The plant pigments maintain bright colors through light and oxidation, thereby ensuring the use effect of the solid wood furniture processed by the wood. In addition, the spraying equipment ensures the efficiency and accuracy of the spraying through the use of multi-axis moving components, making the coating more uniform and delicate, and significantly improving the aesthetics and durability of the furniture.

[0018] 2. The synergistic effect of the roller and the sponge layer of the present invention ensures the uniform distribution and sufficient penetration of the paint on the wood surface. As the multi-axis moving component drives the roller to move along the wood surface, the sponge layer on the roller is in close contact with the wood surface, and the paint is evenly applied to the wood surface by extrusion. Due to the porous structure of the sponge layer, the paint can quickly penetrate into the tiny pores of the wood to form a uniform and dense coating, which not only improves the utilization rate of the paint and reduces the waste of paint, but also improves the efficiency and quality of spraying.

[0019] 3. The present invention operates the switching component. When the linear drive drives the sleeve to move downward, the sleeve drives the atomizing nozzle to move downward, so that the through hole on the nozzle pipe is gradually closed, the nozzle is gradually opened, and the paint is sprayed out from the nozzle to form an atomized spray. When the sleeve moves upward, the atomizing nozzle follows the upward movement, the through hole is gradually opened, the nozzle is gradually closed, and the spraying is stopped. This not only realizes the rapid conversion of wood wiping and spraying, but also reduces the adjustment time, improves the spraying efficiency and quality, reduces the waste of paint, and improves the spraying efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a three-dimensional structural schematic diagram of solid wood furniture surface spraying equipment.

[0021] Figure 2 The present invention is a plan cross-sectional view of a solid wood furniture surface spraying device.

[0022] Figure 3 The present invention is a three-dimensional structural cross-sectional view of a surface spraying device for solid wood furniture.

[0023] Figure 4 The present invention is a three-dimensional structural diagram of a multi-axis moving component, a spray pipe and a wiping component of a solid wood furniture surface spraying device.

[0024] Figure 5The present invention is a three-dimensional structural schematic diagram showing the top surface orientation of a mobile frame, a spray pipe and a wiping and coating component of a solid wood furniture surface spraying device.

[0025] Figure 6 The present invention is a three-dimensional structural schematic diagram showing the bottom surface orientation of a mobile frame, a spray pipe and a wiping and coating component of a solid wood furniture surface spraying device.

[0026] Figure 7 The present invention is a partial three-dimensional structural cross-sectional view of a mobile frame, a spray pipe and a wiping and coating component of a solid wood furniture surface spraying device.

[0027] Figure 8 The present invention is a planar cross-sectional view of a mobile frame, a spray pipe and a wiping and coating component of a solid wood furniture surface spraying device.

[0028] Fig. 9 The present invention is a three-dimensional structural cross-sectional view of the middle section of a mobile frame, a spray pipe and a wiping assembly of a solid wood furniture surface spraying device.

[0029] Fig.10 yes Fig. 9 An enlarged schematic diagram of point A.

[0030] The numbers in the figure are: 1-conveyor; 2-spraying chamber; 3-nozzle; 31-nozzle; 311-atomizing nozzle; 32-through hole; 4-multi-axis moving component; 41-moving frame; 411-injection channel; 412-distance sensor; 42-axle connecting plate; 421-rotating motor; 5-wiping component; 51-roller; 511-material hole; 512-feeding port; 52-sponge layer; 53-material trough; 6-switching component; 61-sleeve; 611-sealing pad layer; 612-card strip; 62-thimble; 63-linear drive; 631-internal threaded ring sleeve; 632-bearing. DETAILED DESCRIPTION

[0031] In order to further understand the features, technical means, specific objectives and functions of the present invention, the present invention is further described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0032] See also Figure 1-Figure 3 As shown, it is a schematic diagram of the structure of the spraying equipment in this embodiment. The spraying equipment in this embodiment is used to spray the surface of solid wood furniture. The spraying equipment is arranged above a conveyor 1. The conveyor 1 is provided with a spraying room 2 for installing the spraying equipment therein. The spraying equipment includes a spray pipe 3 and a multi-axis moving assembly 4. The multi-axis moving assembly 4 has a moving frame 41 for fixing the spray pipe 3. Figure 1-8As shown, a material injection channel 411 connected to the nozzle 3 is provided on the movable frame 41 in the spraying equipment in this embodiment, and a wiping component 5 for wiping the paint on the wood surface so that the paint penetrates the wood is provided on both sides of the nozzle 3. A nozzle 31 is provided at the lower end of the nozzle 3, and a through hole 32 is provided on the surface of the nozzle 3 facing each wiping component 5. A switching component 6 for switching the opening and closing states of the nozzle 31 and the through hole 32 is provided on the nozzle 3. When the nozzle 3 first performs preliminary primer spraying on the wood surface, the nozzle 31 on the nozzle 3 is in an open state under the action of the switching component 6, and the through hole 32 is in a closed state at the same time, so that the paint is sprayed out in an atomized form. When further wiping of the paint on the wood surface is required, the nozzle 31 on the nozzle 3 is in a closed state under the action of the switching component 6, and the through hole 32 is in an open state at the same time, so that the paint is coated on the wiping component 5.

[0033] When spraying solid wood furniture, the nozzle 3 first performs preliminary primer spraying. At this time, the nozzle 31 on the nozzle 3 is in an open state under the action of the switching component 6, and the through hole 32 is in a closed state. The paint enters the nozzle 3 through the injection channel 411 and is sprayed out from the nozzle 31 in an atomized form, evenly covering the wood surface, ensuring the initial adhesion of the primer and laying a good foundation for subsequent coating. The atomized spraying method not only improves the coverage of the paint, but also reduces the waste of paint and improves the spraying efficiency.

[0034] After the initial primer spraying is completed, the nozzle 3 enters the next working stage, i.e., the paint wiping stage. At this time, the switching component 6 works to close the nozzle 31 on the nozzle 3 and open the through hole 32. After the paint flows into the nozzle 3 from the injection channel 411, it flows out through the through hole 32 and is coated on the wiping components 5 on both sides. The wiping components 5 effectively absorb the paint. As the nozzle 3 moves, the wiping component 5 moves downward with the nozzle 3 to contact the wood surface, and the paint is evenly applied to the wood surface by squeezing, so that it fully penetrates into the tiny pores of the wood, which not only enhances the adhesion of the paint, but also makes the coating more uniform and delicate, improving the beauty and durability of the furniture.

[0035] In order to ensure the efficiency and accuracy of the entire spraying process, the multi-axis moving assembly 4 drives the moving frame 41 to move flexibly in multiple directions to ensure that the nozzle 3 can spray every corner and surface of the furniture.

[0036] See also Figure 2-Figure 9As shown, the wiping assembly 5 includes a roller 51 and a sponge layer 52 fixedly mounted on the roller 51, the sponge layer 52 is attached to the roller 51, the surface of the roller 51 has glue for the sponge layer 52 to adhere to, and the movable frame 41 has an axis plate 42 rotatably connected to the roller 51. When the multi-axis movable assembly 4 drives the roller 51 to move so that the sponge layer 52 is pressed against the wood surface and performs a wiping action, the paint in the sponge layer 52 flows out and is coated on the wood surface for penetration.

[0037] When wiping paint on solid wood furniture, the multi-axis moving component 4 drives the roller 51 to move, and the sponge layer 52 on the roller 51 is in close contact with the wood surface, and the paint is evenly applied to the wood surface by squeezing. Due to the porous structure of the sponge layer 52, the paint can quickly penetrate into the tiny pores of the wood to form a uniform and dense coating, which not only improves the utilization rate of the paint, but also reduces the waste of paint, and improves the efficiency and quality of spraying.

[0038] See also Figure 4-Figure 9 As shown, a material trough 53 extending toward the sponge layer 52 is fixedly provided on the nozzle 3. The material trough 53 is a slanted trough structure inclined downward. The end of the material trough 53 extending toward the sponge layer 52 is in contact with the sponge layer 52. When the paint flows out of the through hole 32, the paint flows along the material trough 53 into the surface of the sponge layer 52 for absorption by the sponge layer 52.

[0039] When the paint flows out from the through hole 32 of the nozzle 3, the paint flows into the sponge layer 52 along the inclined angle of the material trough 53. Due to the setting of the material trough 53, the paint can be evenly and continuously distributed on the sponge layer 52, ensuring that the paint is fully infiltrated in the sponge layer 52. As the roller 51 moves, the paint in the sponge layer 52 is evenly applied to the wood surface, and the paint gradually penetrates into the tiny pores of the wood to form a uniform and dense coating.

[0040] See also Figure 4-Figure 7 As shown, a rotating motor 421 for driving the roller 51 to rotate is fixedly provided on the shaft connecting plate 42. When the roller 51 rotates, the paint is in a state of fully filling the sponge layer 52, so that the paint can be squeezed out and coated on the wood surface during the sponge layer 52 rubbing the wood surface.

[0041] When the roller 51 rotates, the rotating motor 421 provides stable power, so that the roller 51 can rotate continuously and evenly. After the paint flows out from the through hole 32, it flows into the sponge layer 52 along the material trough 53. As the roller 51 rotates, the sponge layer 52 can fully absorb the paint, and the sponge layer 52 follows the rotation of the roller 51, making the paint in the sponge layer 52 more uniform, avoiding the situation of too much or too little paint in some parts.

[0042] See also Figure 7 and Figure 8 As shown, as another way for the paint to enter the sponge layer 52 in this embodiment, a plurality of material holes 511 are provided on the surface of the roller 51 in this embodiment, and a feed port 512 is provided at the end of the roller 51 that is not connected to the rotating motor 421. The paint can enter the roller 51 through the feed port 512 and then enter the sponge layer 52 through the material holes 511. When the paint is filled inside the roller 51, the paint is in a state of penetrating into the sponge layer 52 through the material holes 511, so that the sponge layer 52 quickly absorbs the paint.

[0043] When the paint enters the inside of the drum 51 from the feed port 512, the paint is uniformly infiltrated into the sponge layer 52 through the material holes 511 on the surface of the drum 51 under the action of the rotation of the drum 51. Due to the distribution of the material holes 511, the paint can be quickly and evenly distributed in various parts of the sponge layer 52, ensuring sufficient infiltration of the sponge layer 52. In addition, the nozzle 3 in this embodiment can also provide paint to the sponge layer 52. The paint flows to the sponge layer 52 through the through hole 32 and the material trough 53 for absorption by the sponge layer 52. On the basis of the paint provided by the nozzle 3, the paint is further provided through the drum 51, thereby increasing the speed at which the sponge layer 52 absorbs the paint, so that the paint can penetrate into the wood more quickly and evenly.

[0044] See also Figure 2-Figure 10 As shown, the switching assembly 6 includes a sleeve 61 sleeved on the nozzle 3 and an ejector pin 62 inserted in the nozzle 3, the sleeve 61 can move along the axial direction of the nozzle 3, the moving frame 41 is provided with a linear driver 63 for driving the sleeve 61 to move, the ejector pin 62 is fixedly connected to the moving frame 41, the diameter of the ejector pin 62 is smaller than the inner diameter of the nozzle 3, the lower end of the nozzle 3 has an atomizing nozzle 311 slidably connected thereto, the nozzle 31 opens and closes at the end of the atomizing nozzle 311, and the atomizing nozzle 311 can slide along the length direction of the nozzle 3, the sleeve 61 is fixedly connected to the atomizing nozzle 311, when the sleeve 61 moves downward, the atomizing nozzle 311 synchronously moves downward and gradually moves away from the ejector pin 62, so that the through hole 32 is in a gradually closed state, and the nozzle 31 is synchronously in a gradually opened state.

[0045] When the linear drive 63 drives the sleeve 61 to move downward, the sleeve 61 drives the atomizing nozzle 311 to move downward together. At this time, the through hole 32 on the nozzle pipe 3 is gradually closed. Since the ejector pin 62 is fixed on the movable frame 41 and its diameter is smaller than the inner diameter of the nozzle pipe 3, when the atomizing nozzle 311 moves downward, the nozzle 31 of the atomizing nozzle 311 gradually opens, so that the paint can be sprayed out from the nozzle 31 to form an atomized paint spray.

[0046] When the sleeve 61 moves upward, the atomizing nozzle 311 moves upward synchronously, gradually approaching the ejector pin 62, so that the through hole 32 gradually opens and the nozzle 31 gradually closes, thereby stopping the spraying. The operation of the switching component 6 makes the spraying process more efficient, reduces the adjustment time, and improves the overall spraying efficiency.

[0047] See also Figure 7-Figure 9 As shown, the inner wall of the sleeve 61 has a sealing gasket layer 611 in contact with the outer wall of the nozzle 3.

[0048] See also Figure 7-Figure 9 As shown, the linear drive 63 has an internal threaded ring sleeve 631 sleeved on the sleeve 61, a bearing 632 is connected between the internal threaded ring sleeve 631 and the movable frame 41, the outer wall of the sleeve 61 has an external thread matched with the internal threaded ring sleeve 631, the lower end of the sleeve 61 has a clamping strip 612 extending downward, and the movable frame 41 is provided with a clamping groove matched with the clamping strip 612. When the sleeve 61 is driven to move, the sleeve 61 is in a linear movement state relative to the nozzle 3 rather than a rotational state.

[0049] When the linear drive 63 is started, the internal threaded sleeve 631 begins to rotate. Due to the presence of the bearing 632, the rotation of the internal threaded sleeve 631 will not affect the moving frame 41. At the same time, the external thread of the sleeve 61 and the internal thread of the internal threaded sleeve 631 are meshed with each other, so that the sleeve 61 moves linearly along the axial direction under the rotation of the internal threaded sleeve 631. The clamping strip 612 at the lower end of the sleeve 61 is embedded in the clamping groove on the moving frame 41. The sliding of the clamping strip 612 in the clamping groove ensures the linear motion of the sleeve 61 and prevents it from rotating. Therefore, the sleeve 61 always maintains linear motion during the movement process without deflection or rotation, ensuring the stability and accuracy of the motion. The stability of the linear motion also ensures the precise control of the spraying process, further improving the spraying quality and efficiency.

[0050] See also Figure 4-Figure 9 As shown, the moving frame 41 is provided with a distance sensor 412 for sensing the distance between the roller 51 and the wood.

[0051] The distance sensor 412 continuously monitors the distance between the roller 51 and the wood, and transmits the data to the control system in real time. A safety distance threshold is preset in the control system. When the distance between the roller 51 and the wood is less than this threshold, the system will automatically take measures to stop further pressing on the roller 51 to avoid excessive squeezing.

[0052] On one hand, this embodiment provides a specific solution of the above-mentioned spraying equipment. On the other hand, this embodiment also provides a method for spraying wood with the above-mentioned spraying equipment, which specifically includes the following steps: S1. Carbonizing the wood slightly at high temperature and cooling it. Specifically, carbonizing the wood at 120-150°C in vacuum. After carbonizing the wood, cool it out of the kiln. After cooling out of the kiln, the wood will naturally regain moisture for 7 days. After regaining moisture, the wood will enter the dehumidification process for dehumidification treatment to reduce the moisture content of the wood. The wood will be dehumidified for 48 hours to clear the wood ducts for spraying, wiping and coloring of the paint. S2, spraying the paint prepared by alcohol and plant pigment on the wood surface by the spraying equipment in this embodiment, when the wiping component 5 rubs the paint, the paint enters the wood duct of the wood due to the penetration force, and the plant pigment stays in the wood fiber after the alcohol evaporates, thereby completing the spraying operation; S3. After the wood spraying in step S2 is completed, open paint coating is performed by grinding to maintain the original wood grain of the wood and thus complete the spraying operation.

[0053] The present invention not only ensures the initial adhesion of the primer through the two stages of preliminary primer spraying and subsequent paint wiping of the nozzle 3, but also allows the plant pigment in the paint to penetrate into the wood fiber of the wood through the synergistic effect of the atomized spraying and wiping components 5, thereby improving the coverage and adhesion of the paint, reducing the waste of the paint, and improving the spraying efficiency. In the whole process, the multi-axis moving component 4 ensures the high efficiency and accuracy of the spraying, avoids the existence of spraying dead angles, thereby making the coating more uniform and delicate, and significantly improving the aesthetics and durability of the solid wood furniture. In addition, the spraying method of the present invention uses a paint prepared by alcohol and plant pigments to wipe on the surface of the wood. After the plant pigments penetrate into the wood fibers, open paint coating is then performed. The wood is naturally oxidized and illuminated to make the color of the wood pigment bright and bright, ensuring the use effect of the solid wood furniture formed by the wood processing.

[0054] The above embodiments only express one or several implementation modes of the present invention, and the description thereof is relatively specific and detailed, but it cannot be understood as limiting the scope of the present invention. It should be pointed out that, for those of ordinary skill in the art, several variations and improvements can be made without departing from the concept of the present invention, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the attached claims.

Claims

1. A solid wood furniture surface spraying device, arranged above a conveyor (1), wherein the conveyor (1) is provided with a spraying room (2) in which the spraying device is installed, characterized in that: The spraying device comprises a spray pipe (3) and a multi-axis moving assembly (4), wherein the multi-axis moving assembly (4) has a moving frame (41) for fixing the spray pipe (3), and the moving frame (41) is provided with an injection channel (411) connected to the spray pipe (3), and both sides of the spray pipe (3) are provided with a rubbing assembly (5) for rubbing a coating on a wood surface so that the coating penetrates the wood; A nozzle (31) is provided at the lower end of the nozzle pipe (3), and a through hole (32) is provided on the nozzle pipe (3) on the surface facing each wiping component (5). The nozzle pipe (3) is provided with a switching component (6) for switching the opening and closing states of the nozzle (31) and the through hole (32). When the nozzle pipe (3) first performs preliminary primer spraying on the wood surface, the nozzle (31) on the nozzle pipe (3) is in an open state under the action of the switching component (6), and the through hole (32) is in a closed state at the same time, so that the paint is sprayed out in an atomized form. When the nozzle pipe (3) subsequently performs paint wiping on the wood surface, the nozzle (31) on the nozzle pipe (3) is in a closed state under the action of the switching component (6), and the through hole (32) is in an open state at the same time, so that the paint is filled on the wiping component (5).

2. The solid wood furniture surface spraying equipment according to claim 1, characterized in that: The wiping assembly (5) comprises a roller (51) and a sponge layer (52) fixedly mounted on the roller (51). The movable frame (41) comprises a shaft connecting plate (42) for rotationally connecting the roller (51) of each wiping assembly (5). The roller (51) is arranged on the shaft connecting plate (42). When the multi-axis movable assembly (4) drives the roller (51) to move so that the sponge layer (52) is pressed against the surface of the wood and performs a wiping action, the paint gradually penetrates into the wood.

3. The solid wood furniture surface spraying equipment according to claim 2, characterized in that: A material trough (53) extending in the direction of the sponge layer (52) is fixedly provided on the nozzle (3). The material trough (53) is a slanted trough structure inclined downward. The end of the material trough (53) extending in the direction of the sponge layer (52) contacts the sponge layer (52). When the paint flows out of the through hole (32), the paint flows into the sponge layer (52) along the material trough (53) to be absorbed by the sponge layer (52).

4. The solid wood furniture surface spraying equipment according to claim 2, characterized in that: A rotating motor (421) for driving the roller (51) to rotate is fixedly provided on the shaft connecting plate (42). When the roller (51) rotates, the sponge layer (52) rotates along with the roller (51) and is pressed against the wood surface so that the paint is squeezed out of the sponge layer (52) and coated on the wood surface.

5. The solid wood furniture surface spraying equipment according to claim 4, characterized in that: A plurality of material holes (511) are provided on the surface of the roller (51), and a material inlet (512) is provided at one end of the roller (51) opposite to the rotating motor (421). The paint enters the roller (51) through the material inlet (512), and the paint penetrates into the sponge layer (52) through the material holes (511), so that the sponge layer (52) quickly absorbs the paint.

6. The solid wood furniture surface spraying equipment according to claim 1, characterized in that: The switching assembly (6) comprises a sleeve (61) sleeved on the nozzle (3) and an ejector pin (62) inserted in the nozzle (3); the sleeve (61) is movable along the axial direction of the nozzle (3); the movable frame (41) is provided with a linear drive (63) for driving the sleeve (61) to move; the ejector pin (62) is fixedly connected to the movable frame (41); the diameter of the ejector pin (62) is smaller than the inner diameter of the nozzle (3); the lower end of the nozzle (3) is provided with an atomizing nozzle (311) slidably connected thereto; the nozzle (31) is provided at the end of the atomizing nozzle (311); the sleeve (61) is fixedly connected to the atomizing nozzle (311); when the sleeve (61) moves downward, the atomizing nozzle (311) simultaneously moves downward and gradually moves away from the ejector pin (62), so that the through hole (32) is in a gradually closed state, and the nozzle (31) is in a gradually opened state simultaneously.

7. The solid wood furniture surface spraying equipment according to claim 6, characterized in that: The inner wall of the sleeve (61) has a sealing gasket layer (611) in contact with the outer wall of the nozzle (3).

8. The solid wood furniture surface spraying equipment according to claim 6, characterized in that: The linear drive (63) comprises an internally threaded ring sleeve (631) sleeved on the sleeve (61); a bearing (632) is connected between the internally threaded ring sleeve (631) and the movable frame (41); an outer wall of the sleeve (61) comprises an external thread matched with the internally threaded ring sleeve (631); a lower end of the sleeve (61) comprises a clamping strip (612) extending downward; and a clamping groove matched with the clamping strip (612) is formed on the movable frame (41); when the sleeve (61) is driven to move, the sleeve (61) is in a linear moving state relative to the nozzle (3).

9. A method for spraying the surface of solid wood furniture, characterized in that: The following steps are involved: S1, carbonizing the wood at high temperature in vacuum and cooling it; S2, spraying the paint prepared by alcohol and plant pigment on the wood surface; S3. Wait for the alcohol in the wood to dissipate naturally, so that the plant pigments remain in the wood fibers.

10. The method for spraying the surface of solid wood furniture according to claim 9, characterized in that: The step S1 also includes performing a moisture reconditioning treatment on the carbonized wood, and the specific treatment method is as follows; The carbonized wood is allowed to naturally rehydrate for 7 days, and then dehumidified to reduce the moisture content of the wood and unclog the wood ducts.

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