Edge sanding and painting machine

Abstract

The present application belongs to the technical field of sanding coating machine, especially to an edge sanding coating machine. The present application comprises a sanding coating machine main machine and a sanding coating plate body moving transversely along the processing groove of the sanding coating machine main machine, further comprising: a glue coating vertical roller installed on one side of the sanding coating machine main machine processing groove and pasted on the side surface of the sanding coating plate body, and a glue coating inclined roller installed on one side of the glue coating vertical roller and pasted on the inclined side surface of the sanding coating plate body, wherein the glue coating inclined roller is provided with a spraying bin capable of spraying paint on the glue coating inclined roller. The present application adds a self-adaptive floating type glue coating inclined roller, which is suitable for processing of special-shaped side edges such as bevels and trapezoidal edges; wherein the angle adjusting block is hinged to the L-shaped carrier plate through a side shaft, and cooperates with the arc-shaped spring part to provide continuous elastic compression force, so that the glue coating inclined roller can passively float and retreat with the angle change of the plate bevel, thickness deviation and conveying deviation, and always maintains the surface fitting state with the inclined surface.

Description

Technical Field

[0001] This invention relates to the field of sanding and coating machine technology, specifically to an edge sanding and coating machine. Background Technology

[0002] With the rapid development of the whole-house custom furniture industry, the market share of products such as minimalist style door panels, handle-free cabinets, and 45° spliced ​​frame doors continues to increase. The sides of panels are no longer limited to straight edge banding; the demand for coating irregularly shaped sides with trapezoidal edges, 45° chamfers, and rounded bevels has increased significantly. As the core equipment for painting the sides of panels, the adaptability of the coating mechanism of the edge sanding and coating machine directly determines the coating quality and production efficiency of the product.

[0003] Conventional edge sanding and coating machines typically employ a vertical double-roller coating structure for the primer coating station. This structure consists of a metering steel roller and a glue-applying vertical roller arranged vertically and parallel to each other. The thickness of the paint film is precisely controlled by the gap between the two rollers, providing good coating accuracy and production efficiency for the sides of flat boards. However, in actual production applications, this type of equipment has significant technical limitations when processing irregularly shaped beveled boards. For example, it has poor adaptability for coating beveled boards. The vertical double roller can only uniformly coat the sides of vertical planes. When the sides of the board have bevels or trapezoidal edges, the vertical glue roller only makes line contact with the inclined board surface, failing to form a complete surface fit. This results in exposed substrate at the top of the bevel and insufficient coating at the corners, failing to meet the process requirements for primer filling and sealing.

[0004] Therefore, we propose an edge sanding and coating machine to solve the above problems. Summary of the Invention

[0005] (a) Technical problems to be solved

[0006] To address the shortcomings of existing technologies, this invention provides an edge sanding and coating machine, which solves the problem mentioned in the background technology that vertical double rollers can only uniformly coat the sides of vertical planes. When the sides of the board have beveled edges or trapezoidal edges, the vertical rollers only make line contact with the inclined board surface, which cannot form a complete surface fit. This results in the upper part of the inclined surface being exposed and the corners not being coated enough, failing to meet the process requirements of primer filling and sealing.

[0007] (II) Technical Solution

[0008] To achieve the above objectives, the present invention specifically adopts the following technical solution:

[0009] An edge sanding and coating machine includes a sanding and coating machine main unit and a sanding and coating plate that moves laterally along the processing groove of the sanding and coating machine main unit. It also includes: an adhesive application vertical roller installed on one side of the processing groove of the sanding and coating machine main unit and attached to the side of the sanding and coating plate, and an adhesive application inclined roller installed on one side of the adhesive application vertical roller that can be attached to the inclined side of the sanding and coating plate, wherein the adhesive application inclined roller is equipped with a spraying chamber that can spray paint onto the adhesive application inclined roller.

[0010] A guide plate is installed on one side of the glue-applying slanted roller. The end face of the glue-applying slanted roller near the sanding and coating plate has a plate embedding hole. A transverse slide rod is radially slidably connected in the groove of the plate embedding hole. A cleaning part that can clean and scratch the surface of the sanding and coating plate is installed on the transverse slide rod.

[0011] A linkage mechanism that can drive the transverse slide bar to reciprocate is also installed on the surface of the guide plate.

[0012] Furthermore, a sheet guide plate is installed on one side of the processing tank of the sanding and coating machine main unit, and a sheet traction frame is installed on one side of the sanding and coating machine main unit, so that both ends of the sanding and coating sheet are respectively mounted on the processing tank and the sheet traction frame.

[0013] Furthermore, the main body of the sanding and coating machine is equipped with a liquid collection tank located at the lowest front end of the sanding and coating plate. The liquid collection tank has an open top and a drain pipe at the bottom. An external replenishment pipe for introducing paint liquid is installed on the side of the liquid collection tank. A level gauge for detecting the paint liquid volume is also installed inside the liquid collection tank.

[0014] Furthermore, a metering steel roller is installed on one side of the coating roller, which is parallel to the coating roller. Both the coating roller and the metering steel roller are equipped with a functional crossbeam that supports the position of the top shaft of the coating roller.

[0015] A motor drive chamber is installed at the bottom of the liquid collection tank. The motor drive chamber has a built-in motor that can be connected to the bottom shaft of the coating roller and the metering steel roller. A drain connection chamber is installed on the functional crossbeam to introduce the paint liquid into the liquid collection tank cavity. The drain connection chamber can apply the paint liquid to the metering steel roller.

[0016] Furthermore, the center of the adhesive coating roller is rotatably connected to a central rotating rod, and an angle adjustment block is fixedly installed at the bottom end of the central rotating rod. The side of the angle adjustment block is fixedly connected to the guide plate via a bracket.

[0017] Furthermore, an L-shaped carrier plate is installed on the outer side of the angle adjustment block, and the side of the angle adjustment block can rotate in the groove of the L-shaped carrier plate through the side shaft rod;

[0018] A detachable arc-shaped spring is installed between the top of the angle adjustment block and the L-shaped carrier plate; a telescopic support plate is installed on the back of the L-shaped carrier plate, and the bottom of the telescopic support plate is fixed to the inner wall of the liquid collection tank.

[0019] Furthermore, a spray chamber is installed above the L-shaped carrier plate. The bottom slope of the spray chamber is at the same angle as the glue-coating roller. The straight liquid outlet at the bottom of the spray chamber can act on the glue-coating roller. The top of the spray chamber can introduce the paint liquid from the collection tank through the liquid inlet pipe.

[0020] Furthermore, the linkage mechanism includes a linkage push plate and a linkage diagonal rod, wherein two sets of transverse slide rods are provided, the linkage push plate is located on one side of the center of the gap between the front ends of the two sets of transverse slide rods, and the two ends of the linkage diagonal rod are rotatably connected between the linkage push plate and the two sets of transverse slide rods.

[0021] The surface of the guide plate is provided with an anti-slip groove to restrict the radial sliding of the linkage push plate.

[0022] Furthermore, a rotating pressure roller is installed at the bottom of the guide plate, and both ends of the rotating pressure roller are mounted on the guide plate via pressure roller brackets;

[0023] The shaft of the rotating pressure roller extends outward through the pressure roller frame plate and is connected to a rotating disk. A protruding rod is fixed on the surface of the rotating disk near the edge. A push rod is sleeved on the protruding rod, and the other end of the push rod is rotatably connected to the tail of the linkage push plate.

[0024] Furthermore, a scraper is installed on one side of the glue-applying slant roller, and the front end of the scraper is connected to a soft blade that can adhere to the surface of the glue-applying slant roller.

[0025] The scraper has an installation groove, and a reinforcing support rod is installed on one side of the scraper. A support rod top plate is fixed at the front end of the reinforcing support rod. The surface of the support rod top plate has a top plate installation groove that matches the position of the installation groove. After the top plate installation groove and the installation groove can be longitudinally inserted with locking bolts, the support rod top plate and the scraper are locked together. The other end of the reinforcing support rod is reinforced to the transverse slide rod with bolts.

[0026] (III) Beneficial Effects

[0027] Compared with the prior art, the present invention provides an edge sanding and coating machine, which has the following beneficial effects:

[0028] This invention retains the mature structure of vertical double-roller coating, with the coating roller and metering steel roller working together to complete high-precision metering coating on straight sides, ensuring the processing efficiency and quality of conventional boards. At the same time, an adaptive floating coating slant roller is added to adapt to the processing of irregular sides such as beveled edges and trapezoidal edges. The angle adjustment block is hinged to the L-shaped carrier plate through the side shaft rod and provides continuous elastic clamping force with the arc spring part, so that the coating slant roller can passively float and yield according to the angle change of the beveled edge of the board, thickness deviation, and conveyor deviation, always maintaining a surface-fit state with the beveled surface, solving the problems of limited adaptability and unstable bonding pressure of traditional fixed slant rollers.

[0029] A reciprocating cleaning mechanism synchronized with the coating process is installed, which converts the rotational motion into the radial reciprocating extension and retraction motion of two sets of transverse slide bars, thereby driving the cleaning part to continuously scrape the inclined surface of the board. This structure can specifically sweep away the accumulated wood dust and sand in the bearing surface of the inclined surface and the gaps between the edges, reducing the probability of dust mixing into the paint film from the source, and greatly reducing the occurrence of defects such as paint particles and pits after curing.

[0030] The scraper mechanism is linked with the transverse slide bar. While cleaning the inclined surface, the scraper is simultaneously driven to slide back and forth along the axis of the coating roller. By using the soft blade to evenly scrape the paint on the roller surface, it can break up the strip-shaped paint bands formed by the fixed-point liquid discharge from the spray booth and eliminate longitudinal paint lines on the roller surface. On the other hand, it can counteract the downward flow of paint caused by gravity, smooth out the liquid level difference on the roller surface, and form a uniform and complete oil film on the surface of the coating roller. Attached Figure Description

[0031] Figure 1 This is a schematic diagram of the overall external structure of the coating machine of the present invention;

[0032] Figure 2 This is a schematic diagram of the cooperation structure between the sanding and coating plate and the adhesive coating roller in the processing tank of the main machine of the sanding and coating machine of the present invention.

[0033] Figure 3 For the present invention Figure 2 Side view of the intermediate coating station;

[0034] Figure 4 For the present invention Figure 3 Enlarged schematic diagram of the intermediate coating skew roller assembly structure

[0035] Figure 3 Enlarged schematic diagram of the assembly structure of the intermediate coating adhesive skew roller;

[0036] Figure 5 For the present invention Figure 3 Enlarged schematic diagram of the transmission structure of the middle guide plate;

[0037] Figure 6 This is a bottom view of the guide plate portion of the present invention.

[0038] Figure 7 This is a schematic diagram of the disassembled structure of the rotating disk and the pushing linkage of the present invention;

[0039] Figure 8 This is a schematic diagram of the separation structure of the scraper and the reinforcing support rod of the present invention.

[0040] In the diagram: 1. Main unit of the sanding and coating machine; 2. Board guide plate; 3. Board traction frame; 4. Sanding and coating board body; 5. Liquid collection tank; 6. Motor drive compartment; 7. Glue application vertical roller; 8. Metering steel roller; 9. Functional crossbeam; 10. Drainage connection compartment; 11. Liquid level gauge; 12. Drain pipe; 13. Replenishment pipe; 14. L-shaped carrier plate; 15. Telescopic support vertical plate; 16. Angle adjustment block; 17. Side shaft; 18. Arc spring section; 19. Spraying compartment; 20. Liquid inlet pipe. 21. Glue-applying slanted roller; 22. Slanted roller center rotating rod; 23. Guide plate section; 24. Pressure roller frame plate; 25. Rotating pressure roller; 26. Plate body embedded hole; 27. Transverse sliding rod; 28. Cleaning section; 29. ​​Anti-slip groove; 30. Linkage push plate; 31. Rotary disc; 32. Pushing connecting rod; 33. Linkage slanted rod; 34. Scraper; 35. Adhesive soft blade; 36. Reinforcing support rod; 37. Mounting groove; 38. Support rod top plate; 39. Top plate mounting groove; 40. Locking bolt section. Detailed Implementation

[0041] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0042] Example

[0043] like Figure 1-8 As shown, an edge sanding and coating machine according to one embodiment of the present invention includes...

[0044] A complete edge sanding and coating machine is set up in sequence along the conveying direction of the board material, including a feeding conveying unit, a pre-sanding unit, a high-intensity dust removal unit, a primer roller coating unit, a UV curing unit, a mid-coat sanding unit, a topcoat roller coating unit, a final curing unit, and a discharge unit. Each unit is arranged in series along the main line. During operation, the cut board material is fed into the equipment at a uniform speed by the feeding conveying unit and first enters the pre-sanding unit: the sides of the board material are sanded by multiple sets of coarse sanding belts, fine sanding rollers, and brush sanders to remove cutting burrs, chamfer the edges, and level the side surface. According to the process requirements, straight edges, small rounded corners, and slightly beveled edges can be sanded and formed. After sanding, the boards enter a high-powered dust removal unit: A closed negative pressure duct, combined with upper and lower brush rollers, sweeps and sucks up wood dust and sand particles adhering to the sides and surface of the boards, preventing dust from entering the coating station and affecting the paint quality. After dust removal, the boards enter the primer roller coating unit: A vertical coating roller evenly applies a UV sealing primer to the sides of the boards, filling the pores of the wood fibers and forming a sealing primer layer. Immediately after primer application, the boards enter the UV curing unit: Multiple sets of LED ultraviolet cold light lamps irradiate the sides, causing the UV paint to rapidly cross-link and cure under ultraviolet light, drying within seconds without the need for natural air drying. Depending on process requirements, the cured boards can enter the intermediate coating sanding unit for fine sanding and leveling of the primer layer, followed by topcoat application and final curing, before being discharged as finished boards by the unloading unit. The above describes the common functions and structures of sanding and coating machines. The core improvement in this embodiment focuses on the side coating and inclined surface adaptation mechanism of the primer roller coating unit. The design points of this device will be described in detail below.

[0045] In this embodiment, the processing tank of the sanding and coating machine host 1 is the main space for conveying and processing the sheet metal. A sheet metal guide plate 2 is installed on one side of the processing tank, and a sheet metal traction frame 3 is installed on one side of the sanding and coating machine host 1. The two ends of the sanding and coating sheet metal 4 are respectively mounted on the guide structure of the processing tank and the sheet metal traction frame 3, and are driven by the main line traction mechanism to move horizontally and uniformly along the processing tank.

[0046] A liquid collection tank 5 is installed inside the cavity of the main unit 1 of the sanding and coating machine and below the front end of the sanding and coating plate 4. The liquid collection tank 5 is a stainless steel tank with an open top, used to store UV primer and receive excess paint liquid that flows back. A drain pipe 12 is provided at the bottom of the liquid collection tank 5 for draining the paint liquid in the tank and discharging cleaning waste liquid when the machine is stopped. A replenishment pipe 13 is installed on the side of the liquid collection tank 5, which is connected to an external paint liquid replenishment pipeline for replenishing the prepared UV primer into the tank. A liquid level gauge 11 is installed inside the liquid collection tank 5 to monitor the volume height of the paint liquid in the tank in real time, and triggers a replenishment prompt when the liquid level is too low.

[0047] A motor drive chamber 6 is fixedly installed below the liquid collection tank 5. The motor drive chamber 6 contains two independent variable frequency drive motors, which are used to drive the coating roller 7 and the metering steel roller 8 to rotate respectively. The coating roller 7 and the metering steel roller 8 are both vertically arranged and arranged in parallel adjacent to each other. The bottom end of the rotating shaft penetrates the bottom wall of the liquid collection tank 5 and extends into the motor drive chamber 6 to drive the output shaft of the corresponding motor. A mechanical seal assembly is set at the joint between the rotating shaft and the bottom wall of the liquid collection tank 5. The sealing between the rotating ring and the stationary ring prevents the paint liquid in the tank from leaking into the motor drive chamber 6 along the gap of the rotating shaft, thus protecting the motor from paint liquid corrosion.

[0048] Both the top of the coating roller 7 and the metering steel roller 8 are mounted on the functional beam 9 via bearing seats. The functional beam 9 is horizontally mounted above the liquid collection tank 5, with both ends fixed to the inner wall of the main unit 1 of the sanding and coating machine, providing top support and positioning for the two rollers. A drain connection chamber 10 is fixedly installed on the functional beam 9. The drain connection chamber 10 is a long, sealed cavity located directly above the metering steel roller 8. A narrow outlet extending along the axial direction of the metering steel roller 8 is opened at the bottom of the cavity. The drain connection chamber 10 is connected to the diaphragm paint supply pump in the liquid collection tank 5 through a liquid supply pipeline. The pump pressurizes the primer in the liquid collection tank 5 and sends it into the drain connection chamber 10, and then it falls evenly to the upper roller surface of the metering steel roller 8 through the bottom outlet, continuously supplying paint to the metering steel roller 8.

[0049] During operation, two independent motors drive the coating roller 7 and the metering steel roller 8 to rotate in opposite directions. The paint carried on the surface of the metering steel roller 8 enters the micron-level adjustable gap between the two rollers as the roller rotates. The gap squeezes and meters the paint, retaining only a uniform paint layer with the same thickness as the gap and transferring it to the surface of the coating roller 7. Excess paint is carried back by the metering steel roller 8 and drips into the collection tank 5 for recycling. When the sanding and coating panel 4 moves laterally along the main line, its vertical side is pressed against the roller surface of the coating roller 7. The uniform paint layer on the surface of the coating roller 7 is reverse-transferred to the side of the panel, completing the primer filling coating on the straight side. By adjusting the gap between the two rollers and the speed difference, the thickness of the paint film on the side can be precisely controlled. This dual-roller metering coating structure is a conventional structure of sanding and coating machines.

[0050] To accommodate the beveled and trapezoidal edge coating on the sides of the sanded coating plate 4, an adaptive bevel coating assembly is installed on the discharge side of the coating roller 7. The specific structure and connection relationship are as follows: A telescopic support plate 15 is fixedly installed on the inner wall of the liquid collection tank 5. The telescopic support plate 15 is a vertical plate that can be raised and lowered to adjust the height of the overall bevel coating mechanism and adapt to plates of different thicknesses. An L-shaped carrier plate 14 is fixedly connected to the top of the telescopic support plate 15. The L-shaped carrier plate 14 is a bent load-bearing base with an arc-shaped adjustment groove on the side facing the plate. An angle adjustment block 16 is located inside the L-shaped carrier plate 14. A side shaft 17 is fixed to the side of the angle adjustment block 16. The side shaft 17 passes through the arc-shaped adjustment groove of the L-shaped carrier plate 14, allowing the angle adjustment block 16 to swing around the side shaft 17 along the arc-shaped groove at a certain angle. A detachable arc-shaped spring part 18 is installed between the top of the angle adjustment block 16 and the top of the L-shaped carrier plate 14. The arc-shaped spring part 18 is normally in a compressed state, providing an elastic thrust for the angle adjustment block 16 to deflect towards the board material, thereby ensuring that the adhesive coating roller 21 is always pressed against the inclined surface of the board material. A center rotating rod 22 of the inclined roller is fixed to the end of the angle adjustment block 16 facing the board material. The center rotating rod 22 of the inclined roller is arranged at an angle. The adhesive coating roller 21 is rotatably sleeved on the center rotating rod 22 of the inclined roller through a bearing and can rotate freely around the center rotating rod 22 of the inclined roller. The adhesive coating roller 21 is a polyurethane soft rubber roller, which can undergo slight deformation to fit the inclined surface, ensuring uniform coating. The guide plate 23 is fixedly connected to the side of the angle adjustment block 16 by a bracket and swings synchronously with the angle adjustment block 16. The guide plate 23 tilts upwards on the side facing the material feed to form a guide slope, and extends to the position close to the glue-applying inclined roller 21 on the discharge side, forming a smooth transition guide surface. When the sanding and coating plate 4 moves laterally, the front inclined surface first contacts the tilted end of the guide plate 23, and gradually pushes the guide plate 23 backwards along the guide surface, causing the angle adjustment block 16 and the glue-applying inclined roller 21 to move backwards synchronously around the side shaft 17. Finally, the inclined surface of the plate smoothly transitions from the surface of the guide plate 23 to the roller surface of the glue-applying inclined roller 21, avoiding the plate end from directly hitting the glue roller and causing edge chipping.

[0051] A spraying chamber 19 is fixedly installed above the L-shaped carrier plate 14. The bottom slope of the spraying chamber 19 has the same inclination angle as the coating roller 21. A straight liquid outlet hole extending along the axial direction of the coating roller 21 is opened at the bottom, and the liquid outlet hole is directly opposite the upper roller surface of the coating roller 21. The top of the spraying chamber 19 is connected to the liquid inlet pipe 20, and the other end of the liquid inlet pipe 20 is connected to the diaphragm paint supply pump in the liquid collection tank 5. The pump pressurizes and delivers the paint liquid to the spraying chamber 19, and then evenly sprays it onto the roller surface of the coating roller 21 through the bottom liquid outlet hole, continuously supplying primer for the inclined surface coating.

[0052] To address the issues of dust accumulation and uneven paint coating on the sloping surface of the board, a linkage cleaning and material leveling mechanism is integrated into the guide plate 23. This eliminates the need for an additional drive motor and works synchronously with the power of the board conveyor. The specific structure is as follows: The guide plate 23 has two sets of board body embedding holes 26 on the end face near the sanded and coated board body 4. Each set of board body embedding holes 26 has a transverse slide rod 27 that is radially slidably connected inside. A cleaning part 28 is fixedly installed at the front end of the transverse slide rod 27. The cleaning part 28 is made of soft brush or wear-resistant sponge material and is set towards the sloping surface of the board. The surface of the guide plate 23 is provided with an anti-slip groove 29, which is arranged along the center line connecting the two sets of transverse slide rods 27. A linkage push plate 30 is slidably assembled in the anti-slip groove 29. A linkage diagonal rod 33 is hinged to each side of the linkage push plate 30, and the other ends of the two linkage diagonal rods 33 are respectively hinged to the tail ends of the two sets of transverse slide rods 27. The linkage push plate 30, the linkage diagonal rods 33 and the transverse slide rods 27 together form a linkage transmission mechanism. A rotating pressure roller 25 is mounted on the bottom of the guide plate 23 via two pressure roller frame plates 24. The axis of the rotating pressure roller 25 is parallel to the adhesive coating slant roller 21, and the roller surface protrudes from the plate surface of the guide plate 23. The shaft of the rotating pressure roller 25 passes through the pressure roller frame plate 24 and extends to the outside. A rotating disk 31 is fixedly connected to the shaft end. An eccentric protrusion is fixedly provided on the surface of the rotating disk 31 near the edge. A push connecting rod 32 is sleeved on the eccentric protrusion. The other end of the push connecting rod 32 is rotatably connected to the tail of the linkage push plate 30 to form a crank-slider transmission structure.

[0053] Meanwhile, a reinforcing support rod 36 is bolted to the body of one of the transverse sliding rods 27. The reinforcing support rod 36 extends towards the adhesive coating roller 21, and a support rod top plate 38 is fixedly connected to its front end. A long strip-shaped mounting groove 37 is opened on the body of the scraper 34, and a top plate mounting groove 39 corresponding to the position of the mounting groove 37 is opened on the surface of the support rod top plate 38. The locking bolt part 40 can be inserted longitudinally into the top plate mounting groove 39 and the mounting groove 37, and after tightening, the support rod top plate 38 and the scraper 34 are locked together. A bonding soft blade 35 is connected to the end of the scraper 34 facing the adhesive coating roller 21. The bonding soft blade 35 is made of polyurethane soft material and is lightly attached to the roller surface of the adhesive coating roller 21. The installation position of the scraper 34 can be adjusted back and forth through the mounting groove 37, thereby adjusting the bonding pressure between the bonding soft blade 35 and the adhesive coating roller 21 to adapt to different viscosity paints and coating thickness requirements.

[0054] During operation, after the inclined surface of the sanding and coating panel 4 passes the guide plate 23, the rotating pressure roller 25 adheres tightly to the inclined surface of the panel under the elastic force of the arc-shaped spring 18. As the panel moves laterally, the friction force drives the rotating pressure roller 25 to rotate passively, which in turn drives the coaxial rotating disk 31 to rotate synchronously. The rotating disk 31 drives the push rod 32 to perform reciprocating push-pull motion through the eccentric protrusion, pushing the linkage push plate 30 to slide radially back and forth along the anti-slip groove 29. When the linkage push plate 30 slides back and forth, it drives two sets of transverse sliding rods 27 to reciprocate and extend synchronously along the panel's embedded hole 26 through two linkage inclined rods 33, causing the front cleaning part 28 to continuously scrape the inclined surface of the panel. Because the inclined surface of the board has a transverse load-bearing section, it is more prone to accumulating wood dust and powder compared to a vertical plane. The dust is also easily trapped in the gaps at the edges and corners of the inclined surface, and conventional straight-through dust removal cannot clean it thoroughly. The cleaning part 28, which scrapes back and forth, can specifically sweep away the dust accumulated in the gaps of the inclined surface, ensuring that the inclined surface is clean before coating and avoiding defects such as particles and pinholes in the paint film. At the same time, the reciprocating movement of the transverse slide bar 27 drives the scraper 34 to slide back and forth along the axial direction of the glue coating roller 21 through the reinforcing support rod 36. The soft blade 35 evenly scrapes and spreads the paint sprayed on the roller surface by the spraying chamber 19, breaks up the strip-shaped thick paint area formed by the paint spraying, counteracts the flow difference caused by gravity that is thinner at the top and thicker at the bottom, and breaks up the air bubbles in the paint, so that a uniform paint layer is formed on the surface of the glue coating roller 21, ensuring that the coating thickness of the inclined surface is uniform.

[0055] After the previous sanding process, the sanded and coated panel 4 is driven by the panel traction frame 3 to move horizontally and at a uniform speed along the processing groove of the main unit 1 of the sanding and coating machine. The vertical side of the panel first contacts the glue-applying roller 7. The metering steel roller 8 works with the glue-applying roller 7 to complete the primer metering, transferring a uniform paint layer to the vertical side of the panel, completing the primer coating on the flat side. The panel continues to be conveyed forward, and the front inclined edge contacts the raised guide surface of the guide plate 23, gradually pushing the guide plate 23 and the angle adjustment block 16 to swing backward. The arc spring 18 is compressed to provide a reverse clamping force, and the inclined surface of the panel smoothly transitions to the desired position. The surface of the coating roller 21 is covered by a rotating pressure roller 25 that passively rotates against the inclined surface of the board. Through a crank-connecting rod mechanism, the transverse slide bar 27 reciprocates, and the cleaning section 28 simultaneously cleans the dust on the inclined surface. Simultaneously, the scraper 34 slides along the axial direction of the coating roller 21 with the transverse slide bar 27 to scrape the paint liquid sprayed from the spray chamber 19 evenly. Under the elastic force of the arc-shaped spring section 18, the coating roller 21 is pressed against the inclined surface, and the primer is evenly applied to the inclined surface of the board. The coated board continues to be conveyed forward and enters the subsequent UV curing unit to complete the curing of the paint film. Finally, it is sent out of the equipment from the discharge end.

[0056] Finally, it should be noted that the above descriptions are merely preferred embodiments of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. An edge sanding and coating machine, comprising a sanding and coating machine main unit (1) and a sanding and coating plate (4) that moves laterally along the processing groove of the sanding and coating machine main unit (1), characterized in that, It also includes: a coating roller (7) installed on one side of the processing tank of the sanding and coating machine (1) and attached to the side of the sanding and coating plate (4), and a coating roller (21) that can be attached to the inclined side of the sanding and coating plate (4) is installed on one side of the coating roller (7), wherein a spraying chamber (19) that can spray paint liquid onto the coating roller (21) is installed on the coating roller (21); A guide plate (23) is installed on one side of the glue-applying slant roller (21). The glue-applying slant roller (21) has a plate body embedding hole (26) on its end face near the sanding and coating plate (4). A transverse slide rod (27) is radially slidably connected in the groove of the plate body embedding hole (26). A cleaning part (28) is installed on the transverse slide rod (27) to clean and scratch the surface of the sanding and coating plate (4). A linkage mechanism that can drive the transverse slide bar (27) to reciprocate is also installed on the surface of the guide plate (23).

2. An edge sanding and coating machine as claimed in claim 1, characterized in that: A plate guide plate (2) is installed on one side of the processing tank of the sanding and coating machine main unit (1), and a plate traction frame (3) is installed on one side of the sanding and coating machine main unit (1), so that the two ends of the sanding and coating plate (4) are respectively mounted on the processing tank and the plate traction frame (3).

3. An edge sanding and coating machine as claimed in claim 1, characterized in that: The main body (1) of the sanding and coating machine is equipped with a liquid collection tank (5) located at the lower front end of the sanding and coating plate (4). The top of the liquid collection tank (5) is open, and the bottom of the liquid collection tank (5) is equipped with a drain pipe (12). A replenishment pipe (13) for introducing paint liquid is installed on the side of the liquid collection tank (5). A level gauge (11) for detecting the paint liquid volume is also installed in the liquid collection tank (5).

4. An edge sanding and coating machine as claimed in claim 1, characterized in that: A metering steel roller (8) is installed on one side of the glue-coating vertical roller (7) and is arranged parallel to the glue-coating vertical roller (7). A functional crossbeam (9) that supports the top shaft position of the glue-coating vertical roller (7) is installed on the top of both the glue-coating vertical roller (7) and the metering steel roller (8). A motor drive chamber (6) is installed at the bottom of the liquid collection tank (5). The motor drive chamber (6) has a built-in motor that can be connected to the bottom shaft of the coating roller (7) and the metering steel roller (8). A drain connection chamber (10) for introducing the paint liquid into the cavity of the liquid collection tank (5) is installed on the functional crossbeam (9). The drain connection chamber (10) can apply the paint liquid to the metering steel roller (8).

5. An edge sanding and coating machine according to claim 1, characterized in that: The center of the adhesive coating roller (21) is rotatably connected to the roller center rod (22), and an angle adjustment block (16) is fixedly provided at the bottom end of the roller center rod (22). The side of the angle adjustment block (16) is fixedly connected to the guide plate (23) through a bracket.

6. The edge sanding and coating machine according to claim 5, characterized in that: An L-shaped carrier plate (14) is installed on the outside of the angle adjustment block (16), and the side of the angle adjustment block (16) can rotate in the groove of the L-shaped carrier plate (14) through the side shaft rod (17). A detachable arc-shaped spring part (18) is installed between the top of the angle adjustment block (16) and the L-shaped carrier plate (14); a telescopic support plate (15) is installed on the back of the L-shaped carrier plate (14), and the bottom of the telescopic support plate (15) is fixed on the inner wall of the liquid collection tank (5).

7. An edge sanding and coating machine according to claim 6, characterized in that: A spray chamber (19) is installed above the L-shaped carrier plate (14). The bottom slope of the spray chamber (19) is at the same angle as the glue coating roller (21). The bottom of the spray chamber (19) has a straight liquid outlet hole that can act on the glue coating roller (21). The top of the spray chamber (19) can introduce the paint liquid in the collection tank (5) through the liquid inlet pipe (20).

8. The edge sanding and coating machine according to claim 1, characterized in that: The linkage mechanism includes a linkage push plate (30) and a linkage inclined rod (33). Two sets of transverse slide rods (27) are provided. The linkage push plate (30) is located on one side of the center of the gap between the front ends of the two sets of transverse slide rods (27). The two ends of the linkage inclined rod (33) are rotatably connected between the linkage push plate (30) and the two sets of transverse slide rods (27). The guide plate (23) has an anti-slip groove (29) on its surface to restrict the radial sliding of the linkage push plate (30).

9. An edge sanding and coating machine according to claim 1, characterized in that: A rotating pressure roller (25) is installed at the bottom of the guide plate (23), and the two ends of the rotating pressure roller (25) are mounted on the guide plate (23) through the pressure roller frame plate (24); The shaft of the rotating pressure roller (25) extends outward through the pressure roller frame plate (24) and is connected to the rotating disk (31). A protruding rod is fixed on the surface of the rotating disk (31) near the edge. A push rod (32) is sleeved on the protruding rod. The other end of the push rod (32) is rotatably connected to the tail of the linkage push plate (30).

10. An edge sanding and coating machine according to claim 1, characterized in that: A scraper (34) is installed on one side of the glue-applying slanted roller (21), and the front end of the scraper (34) is connected to a soft blade (35) that can be attached to the surface of the glue-applying slanted roller (21). The scraper (34) has an installation groove (37), and a reinforcing support rod (36) is installed on one side of the scraper (34). A support rod top plate (38) is fixed at the front end of the reinforcing support rod (36). A top plate installation groove (39) that matches the position of the installation groove (37) is opened on the surface of the support rod top plate (38). Locking bolts (40) can be inserted longitudinally into the top plate installation groove (39) and the installation groove (37) to lock the support rod top plate (38) and the scraper (34) together. The other end of the reinforcing support rod (36) is reinforced on the transverse slide rod (27) by bolts.

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