Plate surface coating equipment

Abstract

The invention discloses plate surface coating equipment, and relates to the field of wood profile processing, the plate surface coating equipment comprises a portal frame, a conveyor belt and a cross beam frame, the conveyor belt is arranged below the portal frame, and the cross beam frame is mounted on the portal frame; a connecting frame is arranged on the cross beam frame, and a shielding cover is arranged below the connecting frame; a mounting frame is arranged in the shielding cover; the mounting frame comprises a plurality of mounting beams which are arranged side by side; the mounting beam is provided with a roller structure, an air blowing cylinder and a spray head; according to the plate surface roughening device, the plate surface is subjected to roughening pretreatment, so that the part, located at the groove position, of the plate has the rougher surface, when the plate surface is coated with paint, the paint is hung through the rougher surface, and comprehensive improvement of the coating uniformity, the coating efficiency and the material utilization rate is achieved; and a reliable process equipment scheme is provided for large-scale production of high-decoration carved parts in wooden door manufacturing.

Description

Technical Field

[0001] This invention relates to the field of wood profile processing, specifically to a surface coating device for wood panels. Background Technology

[0002] In wooden door manufacturing, various decorative carvings are often applied to the surface of the boards. During subsequent coating processes, especially when spraying or roller coating carved boards with deep grooves, the paint tends to converge towards the bottom and sidewalls of the grooves in the carving pattern due to gravity and fluid dynamics, resulting in irregular flow and localized paint accumulation in those areas.

[0003] This phenomenon can cause severe uneven coating thickness, which in turn leads to defects such as sagging, paint accumulation, and inconsistent gloss after the paint film cures. This not only seriously affects the decorative effect and aesthetics of the wooden door surface, but may also reduce the protective performance of the paint film due to poor local curing. Summary of the Invention

[0004] The purpose of this invention is to provide a surface coating device for sheet metal to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a surface coating equipment for sheet metal, comprising a gantry frame, a conveyor belt, and a crossbeam frame, wherein the conveyor belt is disposed below the gantry frame, and the crossbeam frame is mounted on the gantry frame;

[0006] The crossbeam is equipped with a connecting frame, and a shield is provided below the connecting frame;

[0007] The shield has a mounting bracket inside;

[0008] The mounting frame includes multiple mounting beams arranged side by side;

[0009] The mounting beam is equipped with a roller structure, a blower, and a nozzle;

[0010] The roller structure includes a roller that can roughen the surface of the sheet material when it rotates.

[0011] Preferably, the gantry frame has symmetrical columns on both sides, and the conveyor belt is positioned between the two columns of the adjustment frame.

[0012] Preferably, the adjustment frame includes a threaded rod, the bottom of which is connected to the motor, and a guide rod is provided on the outside of the threaded rod, with both ends of the guide rod fixedly connected to the column.

[0013] Preferably, the crossbeam frame includes two sets of electric slide rails arranged in parallel at the top and bottom. The two ends of the electric slide rails are connected by a connecting frame. The connecting frame is provided with a threaded sleeve, and the connecting frame is slidably connected to the guide rod.

[0014] Preferably, the threaded sleeve is threadedly connected to the threaded rod and can move up and down under the action of the rotation of the threaded rod.

[0015] Preferably, the connecting frame includes a connecting rod, a connecting block, and a top connecting frame. The connecting rod is fixedly installed inside the connecting block. The connecting block is installed on the electric slide rail and can move on the electric slide rail. The top connecting frame is installed below the connecting rod. The connecting block and the top connecting frame are positioned by a guide shaft.

[0016] Preferably, the two ends of the roller are fixedly connected to the mounting beam by hangers, a motor is provided on the side of the roller, and multiple sets of elastic arms are provided at equal intervals on the surface of the roller body.

[0017] Preferably, the end of the elastic arm is provided with scraping teeth.

[0018] Preferably, the nozzles comprise two adjacent sets arranged symmetrically, and the nozzles form an angle of 5°-15° with the vertical direction.

[0019] Compared with existing technologies, the game effects of this invention are:

[0020] This invention pre-treats the surface of the board material by roughening it, giving the board material in the grooved area a rougher surface. When the paint is applied to the board surface, the rougher surface helps to hold the paint, thus comprehensively improving the coating uniformity, coating efficiency, and material utilization. This provides a reliable process equipment solution for the large-scale production of highly decorative carved parts in wooden door manufacturing. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the structure of the present invention;

[0022] Figure 2 This is the front view of the present invention;

[0023] Figure 3 This is a structural diagram of the connecting frame, shield, and mounting frame of the present invention;

[0024] Figure 4 Schematic diagram of mounting bracket, roller structure, blower, and nozzle structure;

[0025] Figure 5 for Figure 4 Enlarged view of the structure at point A inside.

[0026] In the diagram: 1-Gantry frame; 11-Column; 12-Threaded rod; 13-Guide rod; 2-Conveyor belt; 3-Crossbeam frame; 31-Electric slide rail; 32-Connecting frame; 4-Connecting frame; 41-Connecting rod; 42-Connecting block; 43-Top connecting frame; 44-Guide shaft; 5-Shielding cover; 6-Mounting frame; 61-Mounting beam; 7-Roller structure; 71-Roller; 72-Hanging rod; 711-Elastic arm; 712-Scraping teeth; 8-Blower; 9-Nozzle. Detailed Implementation

[0027] 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 of ordinary skill in the art without creative effort are within the scope of protection of the present invention.

[0028] Please see Figures 1 to 4 The present invention provides a technical solution: a surface coating equipment for sheet metal, including a gantry frame 1, a conveyor belt 2 and a crossbeam frame 3, wherein the conveyor belt 2 is disposed below the gantry frame 1 and the crossbeam frame 3 is mounted on the gantry frame 1;

[0029] The crossbeam frame 3 is provided with a connecting frame 4, and a shield 5 is provided below the connecting frame 4;

[0030] The shield 5 is equipped with a mounting bracket 6 inside;

[0031] The mounting frame 6 includes multiple mounting beams 61 arranged side by side;

[0032] The mounting beam 61 is equipped with a roller structure 7, a blower 8, and a nozzle 9;

[0033] The roller structure 7 includes a roller 71, which can roughen the surface of the plate when rotating.

[0034] In this embodiment, the gantry frame 1 has symmetrical columns 11 on both sides, and the conveyor belt 2 is arranged between the two columns 11 of the adjustment frame 1.

[0035] The gantry frame 1 is a U-shaped metal frame with a height of 2-3m and a span that matches the width of the wooden door. The two side columns 11 are rectangular with a wall thickness of 8-12mm and are fixed to the ground at the bottom.

[0036] In this embodiment, the adjustment frame 1 includes a threaded rod 12, the bottom of which is connected to a motor, and a guide rod 13 is provided on the outside of the threaded rod 12, with both ends of the guide rod 13 fixedly connected to the column 11.

[0037] The threaded rod 12 drives the connecting frame 32 of the crossbeam frame 3 to rise and fall vertically through rotation, adapting to the coating requirements of wooden doors of different thicknesses;

[0038] The guide rod 13 constrains the radial swing of the connecting frame 32, ensuring that the crossbeam frame 3 moves smoothly and avoiding paint spraying deviation caused by shaking.

[0039] In this embodiment, the crossbeam frame 3 includes two sets of electric slide rails 31 arranged in parallel at the top and bottom. The two ends of the electric slide rails 31 are connected by a connecting frame 32. The connecting frame 32 is provided with a threaded sleeve. The connecting frame 32 is slidably connected to the guide rod 13.

[0040] The electric slide rail 31 drives the connecting frame 4 to move horizontally along the crossbeam frame 3;

[0041] The upper and lower sets of electric sliding rails 31 form a two-dimensional plane positioning, ensuring that the connecting frame 4 is accurately aligned with the area of ​​the wooden door to be painted.

[0042] In this embodiment, the threaded sleeve is threadedly connected to the threaded rod 12 and can move up and down under the action of the rotation of the threaded rod 12.

[0043] In this embodiment, the connecting frame 4 includes a connecting rod 41, a connecting block 42, and a top connecting frame 43. The connecting rod 41 is fixedly installed inside the connecting block 42. The connecting block 42 is installed on the electric slide rail 31 and can move on the electric slide rail 31. The top connecting frame 43 is installed below the connecting rod 41. The connecting block 42 and the top connecting frame 43 are positioned by a guide shaft 44.

[0044] The connecting rod 41 is a rectangular steel rod, and its two ends are fixed to the slider of the electric slide rail 31 through the connecting blocks 42;

[0045] The top connecting frame 43 is connected to the connecting block 42 via the guide shaft 44, allowing the top connecting frame 43 to float within a small range.

[0046] The connecting rod 41 serves as the main load-bearing structure, transmitting the driving force of the electric slide rail 31;

[0047] The guide shaft 44 facilitates the assembly of the connecting block 42 and the top connecting bracket 43.

[0048] In this embodiment, the two ends of the roller 71 are fixedly connected to the mounting beam 61 by the hanger 72. A motor is provided on the side of the roller 71, and multiple sets of elastic arms 711 are provided at equal intervals on the surface of the roller 71. The end of the elastic arm 711 is provided with scraping teeth 712.

[0049] When the roller 71 rotates, the scraping teeth 712 come into contact with the surface of the wooden door panel. Through the elastic deformation of the elastic arm 711, micron-level rough textures are processed on the side wall of the groove and the surface of the panel, with a roughness Ra of 0.5-1.5μm.

[0050] The rough texture increases the contact angle between the coating and the substrate, inhibiting excessive convergence of the coating towards the bottom of the groove due to gravity; at the same time, the capillary action of the texture guides the coating to penetrate evenly into all areas of the groove.

[0051] In this embodiment, the nozzles 9 include two adjacent and symmetrically arranged groups, and the nozzles 9 make an angle of 5°-15° with the vertical direction;

[0052] The tilted spray angle allows the paint to be sprayed more effectively onto the sculpted surface with the tilt angle, and the spray forms a wide liquid film. Combined with the symmetrical design of the dual nozzles, it ensures that the paint thickness on both sides of the groove is uniform.

[0053] Working principle: Based on the thickness of the wooden door, the servo motor of the adjustment frame 12 is started, driving the threaded rod 12 to rotate, and through the threaded sleeve, the crossbeam frame 3 is driven to descend along the guide rod 13 to the target height.

[0054] Turn on conveyor belt 2 to transport the carved wooden door directly below the spray painting station shield 5.

[0055] The electric slide rail 31 of the connecting frame 4 drives the connecting block 42 to move horizontally, thereby moving the mounting frame 6 and the roller structure 7 to the top of the wooden door.

[0056] The drive motor of roller 71 is started, roller 71 rotates and presses down, and scraping teeth 712 process a rough texture of Ra=1μm on the side wall and bottom of the carved groove.

[0057] When the nozzle 9 of the mounting bracket 6 is activated, the paint pump delivers paint to the nozzle 9, and the fan-shaped spray covers the groove area.

[0058] The nozzle 9 is tilted at 5°-15° to spray, and the paint directly impacts the bottom of the groove. The symmetrical design of the dual nozzles ensures uniform coverage of both side walls.

[0059] The blower 8 outputs airflow to remove debris that may be generated when the scraping teeth 712 are working;

[0060] After the spraying is completed, the electric slide rail 31 drives the connecting bracket 4 to move horizontally out, and the shield 5 detaches from the surface of the wooden door.

[0061] Conveyor belt 2 transports the painted wooden door to the curing oven to complete the curing of the paint film.

[0062] Based on the above, this invention pre-treats the surface of the board to make the board in the groove position have a rougher surface. When the paint is applied to the board surface, the paint is adhered by the rougher surface, which realizes a comprehensive improvement in coating uniformity, coating efficiency and material utilization. It provides a reliable process equipment solution for the large-scale production of highly decorative carved parts in wooden door manufacturing.

[0063] As is known from common technical knowledge, this invention can be implemented through other embodiments that do not depart from its spirit or essential characteristics. Therefore, the disclosed embodiments described above are merely illustrative and not exhaustive. All modifications within the scope of this invention or its equivalents are included in this invention.

Claims

1. A surface coating device for sheet metal, characterized in that: It includes a gantry frame (1), a conveyor belt (2) and a crossbeam frame (3), wherein the conveyor belt (2) is located below the gantry frame (1) and the crossbeam frame (3) is installed on the gantry frame (1); The crossbeam frame (3) is provided with a connecting frame (4), and a shield (5) is provided below the connecting frame (4); The shield (5) is provided with a mounting bracket (6) inside; The mounting frame (6) includes multiple mounting beams (61) arranged side by side; The mounting beam (61) is equipped with a roller structure (7), a blower (8), and a nozzle (9); The roller structure (7) includes a roller (71), which can roughen the surface of the plate when rotating.

2. The surface coating equipment for sheet metal according to claim 1, characterized in that: The gantry frame (1) has symmetrical columns (11) on both sides, and the conveyor belt (2) is set between the two columns (11) of the adjustment frame (1).

3. The surface coating equipment for sheet metal according to claim 1, characterized in that: The adjustment frame (1) includes a threaded rod (12), the bottom of which is connected to a motor. A guide rod (13) is provided on the outside of the threaded rod (12), and both ends of the guide rod (13) are fixedly connected to the column (11).

4. The surface coating equipment for sheet metal according to claim 3, characterized in that: The crossbeam frame (3) includes two sets of electric slide rails (31) arranged in parallel. The two ends of the electric slide rails (31) are connected by a connecting frame (32). The connecting frame (32) is provided with a threaded sleeve. The connecting frame (32) is slidably connected to the guide rod (13).

5. The surface coating equipment for sheet metal according to claim 4, characterized in that: The threaded sleeve is threadedly connected to the threaded rod (12) and can move up and down under the action of the rotation of the threaded rod (12).

6. The surface coating equipment for sheet metal according to claim 5, characterized in that: The connecting frame (4) includes a connecting rod (41), a connecting block (42), and a top connecting frame (43). The connecting rod (41) is fixedly installed inside the connecting block (42). The connecting block (42) is installed on the electric slide rail (31) and can move on the electric slide rail (31). The top connecting frame (43) is installed below the connecting rod (41). The connecting block (42) and the top connecting frame (43) are positioned by a guide shaft (44).

7. The surface coating equipment for sheet metal according to claim 1, characterized in that: The two ends of the roller (71) are fixedly connected to the mounting beam (61) by the hanger (72). The side of the roller (71) is provided with a motor. The surface of the roller (71) is provided with multiple sets of elastic arms (711) arranged at equal intervals.

8. The surface coating equipment for sheet metal according to claim 7, characterized in that: The end of the elastic arm (711) is provided with scraping teeth (712).

9. The surface coating equipment for sheet metal according to claim 1, characterized in that: The nozzle (9) comprises two adjacent and symmetrically arranged groups, and the nozzle (9) forms an angle of 5°-15° with the vertical direction.

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