Environment-friendly wood board paint spraying device

Abstract

The utility model discloses an environment-friendly wood board paint spraying device which comprises a paint spraying box, a paint spraying cavity is arranged in the paint spraying box, a feeding port is formed in the front side of the paint spraying box, and a door plate is matched with the feeding port and installed on the paint spraying box through a first moving mechanism to move. The first conveying mechanism is located in front of the paint spraying box, the upper end of the first conveying mechanism corresponds to the feeding port, the second conveying mechanism is arranged in the paint spraying chamber, and the upper end of the second conveying mechanism and the upper end of the first conveying mechanism are located on the same plane; the paint spraying mechanism is arranged in the paint spraying cavity through the second moving mechanism and located above the second conveying mechanism, the waste gas treatment mechanism is communicated with the paint spraying cavity, and by means of the paint spraying device, material feeding and material taking are easier and more convenient.

Description

Technical Field

[0001] The utility model relates to the technical field of wood board processing, in particular to an environmentally friendly wood board spraying device. Background Art

[0002] With the continuous acceleration of my country's urbanization process, wooden boards have been widely used in the decoration process of houses. They are used to make wall panels, baseboards, wardrobes and cabinets. After the wooden boards are processed, they need to be painted on the surface. On the one hand, it can prevent the surface of the wooden boards from mold, and on the other hand, it can play a decorative role.

[0003] In the prior art, the utility model patent "A paint spraying device for solid wood door panel production" with patent number "CN214288909U" records: including a base and pillars, pillars are fixedly connected on both sides above the base, a support plate is commonly provided above the two pillars, electric slide rails are embedded in the inner sides of the two pillars, sliders are slidably connected inside the electric slide rails, limited blocks are fixedly connected on both sides of the slide rails, mounting grooves are fixedly connected on the sides of the two connecting plates, a solid wood board is fixedly installed inside the mounting grooves, a nozzle is provided below the paint sprayer, a mounting plate is fixedly connected inside the pillars, a placement rack is fixedly connected on the sides of the mounting plate, and an exhaust fan is embedded inside the placement rack. The utility model has a stable structure and can quickly place solid wood boards by setting electric slide rails, and exhaust fans are provided on both sides of the electric slide rails to absorb paint mist generated during painting. It is simple to use, environmentally friendly and healthy, and is conducive to promotion.

[0004] In the aforementioned patent, since there is no loading mechanism, it is usually necessary to manually put the wooden boards into the rack and take them out. For wooden boards that are heavy and large in size, manual loading is laborious and difficult to operate. Utility Model Content

[0005] In order to solve the above-mentioned deficiencies in the prior art, the utility model provides an environmentally friendly wood board spraying device.

[0006] In order to achieve the above technical effects, the utility model adopts the following scheme:

[0007] An environmentally friendly wood board painting device comprises a paint spraying box, a first conveying mechanism, a second conveying mechanism, a door panel, a first moving mechanism, a second moving mechanism, an exhaust gas treatment mechanism and a paint spraying mechanism;

[0008] The paint spray box has a paint spray chamber, and a horizontally extending feed port is opened on the front side of the paint spray box, and the feed port is connected to the paint spray chamber;

[0009] The door panel matches the feed opening and is used to cover the feed opening from the outside. The door panel is installed on the paint spray box through a first moving mechanism to move horizontally and vertically.

[0010] The first conveying mechanism is located in front of the paint spraying box, the upper end of the first conveying mechanism corresponds to the feed port, the second conveying mechanism is arranged in the paint spraying chamber, and the upper ends of the second conveying mechanism and the first conveying mechanism are located on the same plane;

[0011] The paint spraying mechanism is arranged in the paint spraying chamber through a second moving mechanism and is located above the second conveying mechanism, and the moving direction of the second moving mechanism is parallel to the conveying direction of the second conveying mechanism;

[0012] The exhaust gas treatment mechanism is communicated with the paint spraying chamber.

[0013] According to a preferred technical solution, the first moving mechanism includes a horizontal moving mechanism, a support frame and a vertical moving mechanism;

[0014] The two ends of the door panel are respectively installed on two support frames through a vertical moving mechanism, and the two support frames are respectively installed on the left and right sides of the paint spraying box through a horizontal moving mechanism.

[0015] According to a preferred technical solution, the vertical moving mechanism comprises a lifting cylinder, a vertical guide rod and a vertical guide sleeve;

[0016] The lifting cylinder is vertically mounted on the support frame, and the telescopic end of the lifting cylinder extends upward and is fixedly connected to the door panel;

[0017] The vertical guide rod is vertically installed on the support frame, the vertical guide sleeve is fixedly installed on the door panel, the door panel is located above the support frame, and the vertical guide sleeve is matched and slidably arranged through the vertical guide sleeve.

[0018] According to a preferred technical solution, the horizontal moving mechanism comprises a horizontal sliding rod, a sliding track and a first pushing cylinder;

[0019] The horizontal sliding rod is arranged horizontally, and the front end of the horizontal sliding rod is fixedly connected to the support frame. The horizontal sliding rod is matched and installed on a sliding track for sliding. The sliding track is arranged on the side wall of the paint spraying box. The horizontal sliding rod is pushed and slid by a first pushing cylinder.

[0020] The sliding track includes an upper limit member located at the top and a lower limit member located at the bottom, the distance between the upper limit member and the lower limit member is consistent with the thickness of the horizontal sliding bar, the horizontal sliding bar is clamped and slides between the upper limit member and the lower limit member, the upper end of the horizontal sliding bar has an upper sliding groove arranged along the length, the lower end of the horizontal sliding bar has a lower sliding groove arranged along the length, the lower end of the upper limit member has an upper sliding bar that matches and is embedded in the upper sliding groove for sliding, and the upper end of the lower limit member has a lower sliding bar that matches and is embedded in the lower sliding groove for sliding.

[0021] According to a preferred technical solution, the second moving mechanism includes a slide rail, a slide plate, a lead screw mechanism and a first motor;

[0022] The slide rail extends along the conveying direction of the second conveying mechanism and is installed on the top of the paint spraying chamber;

[0023] The slide plate is matched and mounted on the slide rail to slide, and the slide plate is connected to a lead screw mechanism, the lead screw mechanism is arranged parallel to the slide rail, the lead screw mechanism is driven to rotate by a first motor, and the paint spraying mechanism is mounted on the lower end of the slide plate.

[0024] According to a preferred technical solution, the first conveying mechanism comprises a first frame and a plurality of first conveying rollers, wherein the plurality of first conveying rollers are installed on the first frame at intervals along the conveying direction and rotate;

[0025] The second conveying mechanism includes a second frame and a plurality of second conveying rollers, the second frame is installed in the paint spraying chamber, the plurality of second conveying rollers are installed on the second frame at intervals along the conveying direction and rotate, one end of the second conveying roller extends out of the paint spraying box and is coaxially installed with a double sprocket, two adjacent double sprockets are connected by a first chain, and the double sprocket at one end is connected to the second motor by a second chain.

[0026] The preferred technical solution is that the exhaust gas treatment mechanism includes an exhaust gas pipe, a treatment box and a tail gas pipe;

[0027] One end of the treatment box is communicated with the paint spraying chamber through an exhaust pipe, and the other end of the treatment box is connected to a tail gas pipe. An activated carbon adsorption bed is arranged in the treatment box.

[0028] According to a preferred technical solution, an induced draft fan is connected to the exhaust pipe.

[0029] A preferred technical solution is that the paint spraying mechanism includes a mounting frame and a plurality of paint spraying heads. The mounting frame is mounted on a second movable mechanism for movement. The paint spraying heads are mounted on the lower end of the mounting frame and are arranged downward. The plurality of paint spraying heads are arranged in a straight line. The connecting line of the plurality of paint spraying heads is perpendicular to the moving direction of the second movable mechanism. The paint spraying heads are connected to a paint delivery pipe.

[0030] Compared with the prior art, the beneficial effects are:

[0031] The utility model has a simple structure and is easy to use. A feed port is opened on the paint spray box and a movable door panel is provided to cover the feed port. A wooden board is placed on the first conveying mechanism. After the door panel is opened, the wooden board is sent from the feed port to the second conveying mechanism and is sent to the bottom of the paint spraying mechanism through the second conveying mechanism. Then the door panel is closed for painting. After completion, the door panel is opened to send the wooden board out. With the utility model, loading and taking out of materials are easier and more convenient. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Figure 1 It is a schematic diagram of the structure of the utility model when the door panel is in a closed state;

[0033] Figure 2 It is a structural schematic diagram of the utility model when the door panel is opened;

[0034] Figure 3 yes Figure 2 Schematic cross-sectional view of ;

[0035] Figure 4 It is a schematic diagram of the door panel structure in the utility model;

[0036] Figure 5 It is a schematic diagram of the paint spray box structure in the utility model;

[0037] Figure 6 It is a partial structural schematic diagram of the first moving mechanism in the utility model;

[0038] Figure 7 It is a schematic diagram of the sliding track structure in the utility model.

[0039] Figure numerals: 1. paint spray box; 2. door panel; 3. support frame; 4. vertical guide sleeve; 5. lifting cylinder; 6. vertical guide rod; 7. horizontal sliding rod; 8. upper limit piece; 9. lower limit piece; 10. first push cylinder; 11. first frame; 12. first conveying roller; 13. processing box; 14. induced draft fan; 15. exhaust pipe; 16. feed port; 17. paint spray chamber; 18. second frame; 19. second conveying roller; 20. slide rail; 21. screw mechanism; 22. first motor; 23. slide plate; 24. mounting frame; 25. paint spray head; 26. upper slide trough; 27. upper slide bar; 28. lower slide bar; 29. ​​activated carbon adsorption bed. DETAILED DESCRIPTION

[0040] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0041] An environmentally friendly wood board painting device comprises a paint spraying box 1, a first conveying mechanism, a second conveying mechanism, a door panel 2, a first moving mechanism, a second moving mechanism, an exhaust gas treatment mechanism and a paint spraying mechanism;

[0042] The paint spraying box 1 has a paint spraying chamber 17, and a horizontally extending feed port 16 is opened at the front side of the paint spraying box 1. The feed port 16 is in a strip shape and is used to feed the wood board into the paint spraying chamber 17. The feed port 16 is connected to the paint spraying chamber 17;

[0043] The door panel 2 matches the feed port 16 and is used to cover the feed port 16 from the outside. The door panel 2 is installed on the paint spray box 1 through a first moving mechanism to move horizontally and vertically. The door panel 2 can move horizontally and vertically along the direction perpendicular to the feed port 16 to close and open the door panel 2. When opening the door panel 2, the door panel 2 is moved away from the feed port 16 and then moved upward to expose the feed port 16. When closing the door panel 2, the opposite is true.

[0044] The first conveying mechanism is located in front of the paint spraying box 1, and the upper end of the first conveying mechanism corresponds to the feed port 16. The second conveying mechanism is arranged in the paint spraying chamber 17, and the upper ends of the second conveying mechanism and the first conveying mechanism are located on the same plane;

[0045] The paint spraying mechanism is arranged in the paint spraying chamber 17 through a second moving mechanism and is located above the second conveying mechanism, and the moving direction of the second moving mechanism is parallel to the conveying direction of the second conveying mechanism;

[0046] The exhaust gas treatment mechanism is communicated with the paint spraying chamber 17 .

[0047] Place the wooden board to be painted on the first conveying mechanism, open the door panel 2 to expose the feed port 16, move the wooden board on the first conveying mechanism, and after passing through the feed port 16, move it to the second conveying mechanism, move the wooden board to the bottom of the painting mechanism through the second conveying mechanism, and then close the door panel 2, and paint the surface of the wooden board through the painting mechanism. After the painting is completed, open the door panel 2 and send the wooden board to the first conveying mechanism. The irritating gas and harmful gas generated during the painting enter the exhaust gas treatment mechanism for treatment. Through the utility model, loading and removing materials are easier and more convenient.

[0048] The preferred technical solution is that the first moving mechanism includes a horizontal moving mechanism, a support frame 3 and a vertical moving mechanism;

[0049] The left and right ends of the door panel 2 are respectively installed on two support frames 3 through a vertical moving mechanism, so that the door panel 2 can be raised and lowered on the support frames 3. The two support frames 3 are respectively installed on the left and right sides of the paint spray box 1 through a horizontal moving mechanism, so that the support frames 3 can move in the horizontal direction.

[0050] The door panel 2 is driven to move in the horizontal direction and the vertical direction by the horizontal moving mechanism and the vertical moving mechanism, so as to achieve the purpose of opening and closing the door panel 2.

[0051] The preferred technical solution is that the vertical moving mechanism includes a lifting cylinder 5, a vertical guide rod 6 and a vertical guide sleeve 4;

[0052] The lifting cylinder 5 is vertically mounted on the support frame 3, and the telescopic end of the lifting cylinder 5 extends upward and is fixedly connected to the door panel 2;

[0053] The vertical guide rod 6 is vertically mounted on the support frame 3 , the vertical guide sleeve 4 is fixedly mounted on the door panel 2 , the door panel 2 is located above the support frame 3 , and the vertical guide sleeve 4 is matched and slidably arranged through the vertical guide sleeve 4 .

[0054] The door panel 2 is pushed to move up and down by the lifting cylinder 5 , and the vertical guide rod 6 cooperates with the vertical guide sleeve 4 to guide the door panel 2 in the vertical direction.

[0055] The preferred technical solution is that the horizontal moving mechanism includes a horizontal sliding rod 7, a sliding track and a first pushing cylinder 10;

[0056] The horizontal sliding rod 7 is arranged horizontally, and the front end of the horizontal sliding rod 7 is fixedly connected to the support frame 3. The horizontal sliding rod 7 is matched and installed on a sliding track for sliding. The sliding track is arranged on the side wall of the paint spraying box 1. The horizontal sliding rod 7 is pushed to slide by the first pushing cylinder 10.

[0057] The horizontal sliding rod 7 is driven by the first push cylinder 10 to move in the horizontal direction, thereby driving the support frame 3 to move;

[0058] The sliding track includes an upper limit member 8 located at the top and a lower limit member 9 located at the bottom. The distance between the upper limit member 8 and the lower limit member 9 is consistent with the thickness of the horizontal sliding bar. The horizontal sliding bar is clamped and slides between the upper limit member 8 and the lower limit member 9. The upper end of the horizontal sliding bar has an upper sliding groove 26 set along the length, and the lower end of the horizontal sliding bar has a lower sliding groove set along the length. The lower end of the upper limit member 8 has an upper sliding bar 27 that matches and is embedded in the upper sliding groove to slide, and the upper end of the lower limit member 9 has a lower sliding bar 28 that matches and is embedded in the lower sliding groove to slide.

[0059] The horizontal sliding rod 7 is clamped by the upper limit member 8 and the lower limit member 9, so that the front end of the horizontal sliding rod 7 can withstand a larger gravity, thereby supporting structures such as the door panel 2, the lifting cylinder 5, the vertical guide rod 6, the vertical guide sleeve 4 and the support frame 3. The upper slide groove 26 matches the upper slide bar 27 and the lower slide groove matches the lower slide bar 28, thereby playing a limiting and guiding role in the horizontal movement of the horizontal sliding rod 7.

[0060] According to a preferred technical solution, the second moving mechanism includes a slide rail 20, a slide plate 23, a lead screw mechanism 21 and a first motor 22;

[0061] The slide rail 20 extends along the conveying direction of the second conveying mechanism and is installed on the top of the spray painting chamber 17;

[0062] The slide plate 23 is matched and mounted on the slide rail 20 to slide, and the slide plate 23 is connected to the screw mechanism 21 , the screw mechanism 21 is arranged parallel to the slide rail 20 , the screw mechanism 21 is driven to rotate by the first motor 22 , and the paint spraying mechanism is mounted on the lower end of the slide plate 23 .

[0063] The connection between the lead screw mechanism 21 and the slide plate 23 adopts the existing technology. The first motor 22 drives the lead screw mechanism 21 to rotate, thereby driving the slide plate 23 to move on the slide rail 20, which is used to drive the paint spraying mechanism to move back and forth to spray paint on the surface of the wooden board.

[0064] According to a preferred technical solution, the first conveying mechanism comprises a first frame 11 and a plurality of first conveying rollers 12, wherein the plurality of first conveying rollers 12 are installed on the first frame 11 at intervals along the conveying direction and rotate;

[0065] The wooden board is placed on a plurality of first conveying rollers 12, and is manually pushed to move the wooden board so as to be sent into the painting chamber 17;

[0066] The second conveying mechanism includes a second frame 18 and a plurality of second conveying rollers 19. The second frame 18 is installed in the paint spraying chamber 17. The plurality of second conveying rollers 19 are installed on the second frame 18 at intervals along the conveying direction and rotate. A double sprocket is coaxially installed at one end of the second conveying roller 19. Two adjacent double sprockets are connected by a first chain. The double sprocket at one end is connected to the second motor by a second chain.

[0067] A plurality of second conveying rollers 19 are driven to rotate by a second motor. After the wooden board is delivered to the second conveying mechanism, the wooden board is moved to the bottom of the paint spraying mechanism for painting by the rotation of the second conveying rollers 19. After the painting is completed, the wooden board is delivered out of the paint spraying chamber 17 by the rotation of the second conveying rollers 19.

[0068] The preferred technical solution is that the exhaust gas treatment mechanism includes an exhaust gas pipe, a treatment box 13 and an exhaust gas pipe 15;

[0069] One end of the treatment box 13 is connected to the paint spraying chamber 17 through an exhaust pipe, and the other end of the treatment box 13 is connected to the tail gas pipe 15 . An activated carbon adsorption bed 29 is disposed in the treatment box 13 .

[0070] According to a preferred technical solution, an induced draft fan 14 is connected to the exhaust pipe.

[0071] The induced draft fan 14 is used to strengthen the gas flow in the paint spray chamber 17, so that the air in the paint spray chamber 17 can be treated by the activated carbon adsorption bed 29 and then discharged from the tail pipe 15; after the painting is completed, the door panel 2 is opened to send out the wooden board, and the induced draft fan 14 is started to extract the gas in the paint spray chamber 17; or further, a plurality of air holes connected to the paint spray chamber 17 are opened on the side wall of the paint spray box 1, and a one-way valve facing inward is provided in the air hole, so that the gas can only enter the paint spray chamber 17 through the air hole, and the gas in the paint spray chamber 17 cannot flow out through the air vent. In this way, the induced draft fan 14 can be started during the painting process to extract the gas in the paint spray chamber 17 for treatment.

[0072] A preferred technical solution, the paint spraying mechanism includes a mounting frame 24 and a plurality of paint spraying heads 25, the mounting frame 24 is mounted on a second movable mechanism for movement, the paint spraying heads 25 are mounted on the lower end of the mounting frame 24 and are arranged downward, the plurality of paint spraying heads 25 are arranged in a straight line, the connecting line of the plurality of paint spraying heads 25 is perpendicular to the moving direction of the second movable mechanism, the paint spraying heads 25 are connected to a paint delivery pipe, the paint delivery pipe is connected to an external paint bucket, and a paint pump is provided on the paint delivery pipe.

[0073] A plurality of spray heads 25 are arranged in a linear distribution, spanning the second conveying mechanism, and the second moving mechanism drives the mounting frame 24 to move back and forth, so that the surface of the wooden board can be sprayed with paint.

[0074] In the description of the present utility model, it should be understood that the terms "upper", "lower", "top", "bottom", "inside", "outside", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, or are the orientations or positional relationships in which the utility model product is conventionally placed when in use, or are the orientations or positional relationships conventionally understood by those skilled in the art. They are only for the convenience of describing the present utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present utility model.

[0075] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present utility model, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0076] Based on the embodiments of the present utility model, all other embodiments obtained by ordinary technicians in the field without making any creative work shall fall within the scope of protection of the present utility model.

Claims

1. An environmentally friendly wood board painting device, characterized in that: It comprises a paint spraying box (1), a first conveying mechanism, a second conveying mechanism, a door panel (2), a first moving mechanism, a second moving mechanism, an exhaust gas treatment mechanism and a paint spraying mechanism; The paint spray box (1) has a paint spray chamber (17) therein, and a horizontally extending feed port (16) is provided on the front side of the paint spray box (1), and the feed port (16) is connected to the paint spray chamber (17); The door panel (2) matches the feed opening (16) and is used to cover the feed opening (16) from the outside. The door panel (2) is installed on the paint spray box (1) through a first moving mechanism to move in the horizontal and vertical directions. The first conveying mechanism is located in front of the paint spraying box (1), the upper end of the first conveying mechanism corresponds to the feed port (16), the second conveying mechanism is arranged in the paint spraying chamber (17), and the upper ends of the second conveying mechanism and the first conveying mechanism are located on the same plane; The paint spraying mechanism is arranged in the paint spraying chamber (17) through a second moving mechanism and is located above the second conveying mechanism, and the moving direction of the second moving mechanism is parallel to the conveying direction of the second conveying mechanism; The waste gas treatment mechanism is communicated with the paint spraying chamber (17).

2. An environmentally friendly wood board painting device as claimed in claim 1, characterized in that: The first moving mechanism comprises a horizontal moving mechanism, a support frame (3) and a vertical moving mechanism; The two ends of the door panel (2) are respectively mounted on two support frames (3) via a vertical moving mechanism, and the two support frames (3) are respectively mounted on the left and right sides of the paint spray box (1) via a horizontal moving mechanism.

3. An environmentally friendly wood board painting device as claimed in claim 2, characterized in that: The vertical moving mechanism comprises a lifting cylinder (5), a vertical guide rod (6) and a vertical guide sleeve (4); The lifting cylinder (5) is vertically mounted on the support frame (3), and the telescopic end of the lifting cylinder (5) extends upward and is fixedly connected to the door panel (2); The vertical guide rod (6) is vertically mounted on the support frame (3), the vertical guide sleeve (4) is fixedly mounted on the door panel (2), the door panel (2) is located above the support frame (3), and the vertical guide sleeve (4) is matched and slidably arranged through the vertical guide sleeve (4).

4. The environmentally friendly wood board painting device according to claim 2, characterized in that: The horizontal movement mechanism comprises a horizontal sliding rod (7), a sliding track and a first pushing cylinder (10); The horizontal sliding rod (7) is arranged horizontally, and the front end of the horizontal sliding rod (7) is fixedly connected to the support frame (3). The horizontal sliding rod (7) is matched and installed on a sliding track for sliding. The sliding track is arranged on the side wall of the paint spraying box (1). The horizontal sliding rod (7) is pushed to slide by the first pushing cylinder (10); The sliding track includes an upper limit member (8) located at the top and a lower limit member (9) located at the bottom, the distance between the upper limit member (8) and the lower limit member (9) is consistent with the thickness of the horizontal slide bar, the horizontal slide bar is clamped and slides between the upper limit member (8) and the lower limit member (9), the upper end of the horizontal slide bar has an upper slide groove (26) arranged along the length, the lower end of the horizontal slide bar has a lower slide groove arranged along the length, the lower end of the upper limit member (8) has an upper slide bar (27) that matches and is embedded in the upper slide groove (26) for sliding, and the upper end of the lower limit member (9) has a lower slide bar (28) that matches and is embedded in the lower slide groove for sliding.

5. The environmentally friendly wood board painting device according to claim 1, characterized in that: The second moving mechanism comprises a slide rail (20), a slide plate (23), a lead screw mechanism (21) and a first motor (22); The slide rail (20) extends along the conveying direction of the second conveying mechanism and is installed on the top of the paint spraying chamber (17); The slide plate (23) is matched and mounted on the slide rail (20) to slide, and the slide plate (23) is connected to a screw mechanism (21), the screw mechanism (21) is arranged parallel to the slide rail (20), the screw mechanism (21) is driven to rotate by a first motor (22), and the paint spraying mechanism is mounted on the lower end of the slide plate (23).

6. The environmentally friendly wood board spray painting device according to claim 1, characterized in that: The first conveying mechanism comprises a first frame (11) and a plurality of first conveying rollers (12); the plurality of first conveying rollers (12) are installed on the first frame (11) at intervals along a conveying direction so as to rotate; The second conveying mechanism comprises a second frame (18) and a plurality of second conveying rollers (19), the second frame (18) being installed in the paint spraying chamber (17), the plurality of second conveying rollers (19) being installed on the second frame (18) at intervals along the conveying direction for rotation, one end of the second conveying roller (19) extending out of the paint spraying box (1) and being coaxially mounted with a double sprocket, two adjacent double sprockets being connected by a first chain, and the double sprocket at one end being connected to the second motor by a second chain.

7. The environmentally friendly wood board painting device according to claim 1, characterized in that: The exhaust gas treatment mechanism comprises an exhaust gas pipe, a treatment box (13) and an exhaust gas pipe (15); One end of the treatment box (13) is connected to the paint spraying chamber (17) through an exhaust pipe, and the other end of the treatment box (13) is connected to a tail gas pipe (15). An activated carbon adsorption bed (29) is provided in the treatment box (13).

8. The environmentally friendly wood board painting device according to claim 7, characterized in that: The exhaust gas pipe is connected to an induced draft fan (14).

9. The environmentally friendly wood board spray painting device according to claim 1, characterized in that: The paint spraying mechanism comprises a mounting frame (24) and a plurality of paint spraying heads (25), wherein the mounting frame (24) is mounted on a second moving mechanism for movement, the paint spraying heads (25) are mounted on the lower end of the mounting frame (24) and are arranged downward, the plurality of paint spraying heads (25) are arranged in a linear manner, the connecting line of the plurality of paint spraying heads (25) is perpendicular to the moving direction of the second moving mechanism, and the paint spraying heads (25) are connected to a paint delivery pipe.

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