Metal plate powder spraying device

Abstract

The utility model is suitable for the technical field of powder spraying devices, and discloses a metal plate powder spraying device which comprises a powder spraying operation room, a metal plate conveying track, a reciprocating driving assembly, a powder spraying assembly, a first powder collecting pipe, a cyclone separator, a dust suction fan and a collecting box. In the powder spraying process, the dust suction fan is kept in an on state, so that powder drifting in the powder spraying operation room can be sucked into the cyclone separator through the first powder collecting pipe, and through gas-solid separation treatment of the cyclone separator, the powder can be separated from airflow and falls into the collecting box through the discharging opening in the bottom of the cyclone separator to be collected; therefore, powder can be effectively collected. Moreover, the powder drifting in the powder spraying operation room can be pumped to the cyclone separator through the first powder collecting pipe, so that the powder is not easy to scatter to the outside of the powder spraying operation room through the feed port and the discharge port of the powder spraying operation room, the waste of the powder can be reduced, and the problem of environmental pollution can be avoided.

Description

Technical Field

[0001] This utility model relates to the field of powder coating device technology, and in particular to a sheet metal powder coating device. Background Technology

[0002] Shelves are typically placed in various environments. Oxygen, moisture, and corrosive gases or substances in the air can easily react chemically with the metal surfaces of the shelves, leading to rust and corrosion. Therefore, before manufacturing shelves, it is usually necessary to spray epoxy anti-corrosion material onto the sheet metal surfaces used to form the shelves. Reciprocating powder coating devices are suitable for spraying anti-corrosion materials onto sheet metal surfaces. For example, Chinese patent document CN212550173U discloses a uniform powder coating device for aluminum parts. This device has a powder coating mechanism that uniformly and continuously coats aluminum parts (a type of sheet metal) with powder. To collect excess powder generated during the powder coating process, the device has a powder collection mechanism located below the spray gun. Through the reciprocating rotation of the rotating plate in the powder collection mechanism, excess powder can quickly fall into a storage box. It is then further processed by dust collection tower I and dust collection tower II and collected into a collection box for recycling. The fine dust that meets emission standards after treatment is directly discharged, thereby achieving powder recycling, reducing costs, and protecting the environment.

[0003] However, in actual operation, the rotating plate cannot quickly and completely collect all the excess powder into the storage box. Some powder will scatter outside the guide cover of the device, causing waste and environmental pollution.

[0004] It is evident that existing technologies still need improvement and enhancement. Utility Model Content

[0005] The present invention provides a sheet metal powder coating device, which addresses the problem that existing reciprocating powder coating devices cannot ensure effective collection of powder, resulting in waste and environmental pollution.

[0006] To achieve the above objectives, the solution provided by this utility model is as follows:

[0007] This utility model provides a sheet metal powder coating device, including a powder coating chamber, a sheet metal conveying track located below the top of the powder coating chamber, reciprocating drive components symmetrically arranged on the left and right sides of the powder coating chamber, and a powder coating component connected to the reciprocating drive components; the front and rear sides of the powder coating chamber have inlets and outlets respectively; and further includes:

[0008] The first powder collection pipe is connected to the top of the powder spraying chamber and is in communication with the powder spraying chamber.

[0009] A cyclone separator, wherein the air inlet end of the cyclone separator is connected to a first powder collection pipe;

[0010] A dust extraction fan, which is connected to the air outlet of a cyclone separator;

[0011] A collection box is connected to the discharge port at the bottom of the cyclone separator.

[0012] Optionally, the sheet metal powder coating device further includes:

[0013] The second powder collection pipe is connected to the first powder collection pipe, and the suction port of the second powder collection pipe faces the feed port.

[0014] The third powder collection pipe is connected to the first powder collection pipe, and the suction port of the third powder collection pipe faces the discharge port.

[0015] Optionally, the reciprocating drive assembly includes a base and a Z-axis linear module vertically mounted on the base; the powder spraying assembly is connected to the movable end of the Z-axis linear module.

[0016] Optionally, the reciprocating drive assembly further includes guide rods vertically mounted on the base and located on both sides of the Z-axis linear module; the powder spraying assembly includes a U-shaped movable frame, a spray gun mounting column, and a spray gun; the U-shaped movable frame is horizontally arranged and connected to the movable end of the Z-axis linear module, and the U-shaped movable frame is provided with grooves that cooperate with the guide rods; the spray gun mounting column is arranged along the front-rear direction of the powder spraying work chamber, and the spray gun mounting column is connected to the two ends of the U-shaped movable frame; the spray gun is horizontally and side by side on the spray gun mounting column, and the spray gun is perpendicular to the spray gun mounting column.

[0017] Optionally, the left and right side walls of the powder spraying booth are provided with vertical openings for the two ends of the U-shaped movable frame to pass through; the vertical openings are in pairs; the side walls of the powder spraying booth are also provided with pipeline passages, which are located between the two vertical openings in each group of vertical openings, and the pipeline passages are located in the lower half of the side wall of the powder spraying booth.

[0018] Optionally, the sheet metal powder coating device further includes a fourth powder collection pipe, the number of which is the same as the number of pipeline through-holes. The fourth powder collection pipe is connected to the first powder collection pipe, and the lower end of the fourth powder collection pipe extends into the powder coating operation chamber and is located next to the pipeline through-hole. The suction port of the fourth powder collection pipe is set away from the pipeline through-hole.

[0019] Optionally, steps are provided at both the inlet and outlet.

[0020] Optionally, the bottom of the powder spraying chamber is equipped with a powder collection tray or a powder receiving membrane.

[0021] Beneficial effects:

[0022] This invention provides a sheet metal powder coating device. A first powder collection pipe is installed on the top of the powder coating chamber and connected to a cyclone separator equipped with a dust extraction fan. During powder coating, the dust extraction fan remains on, allowing powder dispersed within the powder coating chamber to be drawn into the cyclone separator via the first powder collection pipe. Through gas-solid separation in the cyclone separator, the powder is separated from the airflow and falls into a collection box from the outlet at the bottom of the separator, effectively collecting the powder. Furthermore, because the powder dispersed within the powder coating chamber is drawn into the cyclone separator via the first powder collection pipe, it is less likely to spill outside the powder coating chamber through the inlet and outlet, thus reducing powder waste and preventing environmental pollution. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the sheet metal powder coating device provided by this utility model.

[0024] Figure 2 yes Figure 1 Enlarged view of section A.

[0025] Figure 3 This is a schematic diagram showing the connection between the reciprocating drive assembly and the powder spraying assembly.

[0026] Explanation of icon numbers:

[0027] 1-Powder spraying chamber; 101-Inlet; 102-Outlet; 103-Vertical opening; 104-Pipeline access point;

[0028] 2-Reciprocating drive assembly; 21-Base; 22-Z-direction linear module; 23-Guide rod;

[0029] 3-Powder coating assembly; 31-U-shaped movable frame; 32-Spray gun mounting post; 33-Spray gun;

[0030] 4-First powder collection pipe; 5-Cyclone separator; 6-Dust extraction fan; 7-Collection box; 8-Second powder collection pipe; 9-Third powder collection pipe; 10-Fourth powder collection pipe; 11-Step; 12-Powder collection basin. Detailed Implementation

[0031] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0032] It should be noted that all directional indicators (such as up, down, left, right, front, back, etc.) in the embodiments of this utility model are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicator will also change accordingly.

[0033] It should also be noted that when a component is referred to as "fixed to" or "attached to" another component, it can be directly on the other component or may have an intervening component present. When a component is referred to as "connected to" another component, it can be directly connected to the other component or may have an intervening component present.

[0034] Furthermore, the use of terms such as "first" and "second" in this utility model is for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. Additionally, the technical solutions of the various embodiments can be combined with each other, but only on the basis of being achievable by those skilled in the art. When the combination of technical solutions is contradictory or impossible to implement, such a combination of technical solutions should be considered non-existent and not within the scope of protection claimed by this utility model.

[0035] Please see Figures 1 to 3 This utility model provides a sheet metal powder coating device, including a powder coating work chamber 1, a sheet metal conveying track (not shown in the figure), a reciprocating drive assembly 2, a powder coating assembly 3, a first powder collection pipe 4, a cyclone separator 5, a dust extraction fan 6, and a collection box 7.

[0036] Specifically, the sheet metal conveying track (which may be the spraying workpiece conveying system disclosed in CN208373391U) is prior art. Part of it is located below the inner top of the powder coating booth 1, and part of it is located outside the powder coating booth 1. Moreover, the front and rear sides of the powder coating booth 1 have inlet 101 and outlet 102. Thus, production personnel can hang the sheet metal to be coated with epoxy anti-corrosion material on the hooks below the sheet metal conveying track outside the powder coating booth 1, and then transport the sheet metal from the inlet 101 to the powder coating booth 1 through the sheet metal conveying track. After the sheet metal has completed the powder coating operation in the powder coating booth 1, the sheet metal coated with epoxy anti-corrosion material is transported from the outlet 102 to the curing oven outside the powder coating booth 1 through the sheet metal conveying track.

[0037] Specifically, the reciprocating drive assembly 2 is symmetrically arranged on the left and right outer sides of the powder coating chamber 1, and the powder coating assembly 3 is connected to the reciprocating drive assembly 2. By driving the powder coating assembly 3 to move up and down reciprocally through the reciprocating drive assembly 2, epoxy anti-corrosion material can be sprayed onto the sheet metal surface (it can be single-sided spraying, or simultaneous spraying of the front and back sides, with the spray gun 33 of the powder coating assembly 3 perpendicular to the front and back sides of the sheet metal suspended below the sheet metal conveying track).

[0038] Specifically, the first powder collection pipe 4 can be connected to the top of the powder spraying chamber 1 through a pipe joint, and the first powder collection pipe 4 is connected to the powder spraying chamber 1; the air inlet of the cyclone separator 5 is connected to the first powder collection pipe 4, and the dust extraction fan 6 is connected to the air outlet of the cyclone separator 5; the collection box 7 is connected to the air shut-off fan outlet 102 provided at the bottom of the cyclone separator 5.

[0039] During powder coating operations, the dust extraction fan 6 remains on. Therefore, during the powder coating process, the powder dispersed within the powder coating chamber 1 is drawn into the cyclone separator 5 via the first powder collection pipe 4. Through the gas-solid separation process of the cyclone separator 5, the powder is separated from the airflow and falls into the collection box 7 through the discharge port 102 at the bottom of the cyclone separator 5, thus effectively collecting the powder. Furthermore, because the powder dispersed within the powder coating chamber 1 is drawn into the cyclone separator 5 via the first powder collection pipe 4, the powder is less likely to scatter outside the powder coating chamber 1 through the inlet 101 and outlet 102, thereby reducing powder waste and preventing environmental pollution.

[0040] Optionally, two powder coating components 3 positioned on the left and right sides of the powder coating booth 1 form a group (the number of reciprocating drive components 2 used to drive the powder coating components 3 is the same as the number of powder coating components 3). Two or more groups of powder coating components 3 can be set up to meet different powder coating process requirements, allowing multiple layers of anti-corrosion material to be sprayed onto the sheet metal surface. Furthermore, when multiple groups of powder coating components 3 are set up, if one group of powder coating components 3 requires maintenance, the other groups can still be used, thus ensuring that the powder coating operation is not interrupted.

[0041] It should be noted that the present invention does not limit the number of cyclone separators 5. Multiple cyclone separators 5 can be set, and by using multiple cyclone separators 5 of different specifications (e.g., cyclone separators 5 of different diameters) at the same time, it is possible to collect powders of different particle sizes.

[0042] It should be noted that the connection between the first powder collection pipe 4 and the top of the powder spraying chamber 1 should be far away from the sheet metal conveying track. This way, the suction force of the first powder collection pipe 4 will not affect the sheet metal conveying track, thus ensuring that the sheet metal is always conveyed in the correct posture within the powder spraying chamber 1, and the surface of the sheet metal can be evenly coated with epoxy anti-corrosion material.

[0043] Optionally, the sheet metal powder coating device further includes a second powder collection pipe 8 and a third powder collection pipe 9.

[0044] Specifically, the second powder collection pipe 8 is connected to the first powder collection pipe 4, and the suction port of the second powder collection pipe 8 faces the feed inlet 101, which can promptly extract the powder floating out of the work room from the feed inlet 101; the third powder collection pipe 9 is connected to the first powder collection pipe 4, and the suction port of the third powder collection pipe 9 faces the discharge outlet 102, which can promptly extract the powder floating out of the work room from the discharge outlet 102. Therefore, the setting of the second powder collection pipe 8 and the third powder collection pipe 9 can further improve the powder collection effect, reduce waste, and avoid powder pollution to the workshop environment.

[0045] Optionally, in order to improve the suction effect of the second powder collection pipe 8 and the third powder collection pipe 9, the pipe body portions of the second powder collection pipe 8 and the third powder collection pipe 9 facing the inlet 101 and the outlet 102 can be vertically arranged, and multiple suction ports are distributed at intervals on the vertically arranged pipe body.

[0046] Optionally, the reciprocating drive assembly 2 includes a base 21 and a Z-axis linear module 22 vertically mounted on the base 21; the powder spraying assembly 3 is connected to the movable end of the Z-axis linear module 22. The Z-axis linear module 22 can precisely control the movement of the powder spraying assembly 3 in the vertical direction (Z-axis direction). The base 21 provides a stable support foundation for the entire reciprocating drive assembly 2, ensuring the stability of the Z-axis linear module 22 during operation when it is mounted on the base 21. Since the powder spraying assembly 3 is connected to the movable end of the Z-axis linear module 22, it is less prone to shaking and deviation during movement, thus improving the powder spraying quality of the powder spraying assembly 3.

[0047] Optionally, the reciprocating drive assembly 2 further includes guide rods 23 vertically mounted on the base 21 and located on both sides of the Z-direction linear module 22; the powder spraying assembly 3 includes a U-shaped movable frame 31, a spray gun mounting column 32, and a spray gun 33; the U-shaped movable frame 31 is horizontally arranged and connected to the movable end of the Z-direction linear module 22, and the U-shaped movable frame 31 is provided with a groove that cooperates with the guide rods 23; the spray gun mounting column 32 is located inside the powder spraying chamber 1 and is arranged along the front-back direction of the powder spraying chamber 1, and the spray gun mounting column 32 is connected to the two ends of the U-shaped movable frame 31; the spray gun 33 is horizontally and side by side on the spray gun mounting column 32, and the spray gun 33 is perpendicular to the spray gun mounting column 32.

[0048] Specifically, the guide rod 23 engages with the groove on the U-shaped movable frame 31 to provide precise guidance for the movement of the powder spraying assembly 3. When the Z-axis linear module 22 drives the U-shaped movable frame 31 to move up and down, the guide rod 23 can limit the swing and offset of the U-shaped movable frame 31, so that the powder spraying assembly 3 moves smoothly and strictly in the vertical direction, ensuring that the spray gun 33 is always perpendicular to the sheet metal surface during the spraying process, thereby improving the uniformity and accuracy of powder spraying.

[0049] Specifically, multiple spray guns 33 can be installed horizontally side by side on the spray gun mounting post 32, which increases the coverage of a single powder spraying, improves powder spraying efficiency, and shortens powder spraying time.

[0050] Specifically, a limit switch can be installed on the guide rod, and the limit switch can be used to detect the U-shaped movable frame 31 to control the upward and downward movement of the powder spraying assembly 3, thereby enabling the powder spraying assembly 3 to meet the needs of powder spraying sheet metal of different specifications.

[0051] Specifically, at the start of the powder coating operation, the powder coating component 3, driven by the movable end (slider structure) of the Z-axis linear module 22, moves the U-shaped movable frame 31 upward along the guide rod 23. When the U-shaped movable frame 31 reaches the upper limit position and touches the upper limit limit switch, the limit switch generates an electrical signal and sends it to the controller of the sheet metal powder coating device. Upon receiving the signal, the controller immediately issues a command to change the movement direction of the movable end of the Z-axis linear module 22, causing the powder coating component 3 to begin moving downward. Similarly, when the powder coating component 3 moves downward to the lower limit position and touches the lower limit limit switch, the controller again controls the movable end of the Z-axis linear module to move in the opposite direction, and the powder coating component 3 turns upward again, thus realizing the reciprocating motion of the powder coating component 3 within the set stroke.

[0052] Optionally, automatic powder coating can be achieved by using light curtain sensors to detect the sheet metal inside the powder coating chamber 1. Specifically, light curtain sensors can be used upstream and downstream of the powder coating assembly 3. Each light curtain sensor includes a light curtain emitter and a light curtain receiver, which are respectively positioned opposite each other on the left and right inner walls of the powder coating chamber 1. When the sheet metal reaches the area where the light curtain sensor is located via the sheet metal conveyor track, it will block part of the light emitted by the light curtain emitter, causing a change in the light signal received by the light curtain receiver. The light curtain receiver converts this change in light signal into an electrical signal and transmits it to the controller of the powder coating device. After receiving the electrical signal from the light curtain receiver, the controller will identify the sheet metal. At this time, the Z-axis linear module 22 and the powder spraying component 3 will be activated to perform powder spraying. When the conveyor rail transports the sheet metal out of the powder spraying area between the two powder spraying components 3, neither of the two light curtain sensors can detect the sheet metal. At this time, based on the electrical signal from the light curtain receiver, the controller will automatically control the Z-axis linear module 22 and the powder spraying component 3 to stop working. This ensures that when there is no sheet metal in the powder spraying area, the spray gun 33 will not continue to spray powder, thus avoiding the problem of serious waste of epoxy anti-corrosion material.

[0053] Optionally, the left and right side walls of the powder spraying booth 1 are provided with vertical openings 103 for the two ends of the U-shaped movable frame 31 to pass through; the vertical openings 103 are in pairs; the side walls of the powder spraying booth 1 are also provided with pipeline passage ports 104, which are located between the two vertical openings 103 in each pair of vertical openings 103, and the pipeline passage ports 104 are located in the lower half of the side wall of the powder spraying booth 1.

[0054] Specifically, the vertical opening 103 provides a space channel for the U-shaped movable frame to move up and down, enabling it to move back and forth smoothly. This ensures that the spray gun mounting column 32 and spray gun 33 located in the powder spraying room 1 can move up and down back and forth under the drive of the U-shaped movable frame 31.

[0055] Specifically, the powder spraying assembly 3 and the reciprocating drive assembly 2 require connection to various pipelines, such as the powder delivery pipe of the spray gun 33, control circuits, and power lines of the drive device. Therefore, placing the pipeline access ports 104 between the vertical openings 103 allows the pipelines to be more concentrated and orderly when connecting the powder spraying assembly 3 and the reciprocating drive assembly 2. In addition, placing the pipeline access ports 104 only in the lower half of the side wall ensures that the powder spraying assembly 3 can move and operate normally, while also reducing the amount of powder leakage at the pipeline access ports 104, which can further improve the workshop environment outside the powder spraying booth 1.

[0056] To further reduce powder leakage at the pipeline inlet 104, in an optional embodiment, the sheet metal powder coating device further includes a fourth powder collection pipe 10, the same number as the pipeline inlets 104. The fourth powder collection pipe 10 is connected to the first powder collection pipe 4, and its lower end extends into the powder coating chamber 1 and is located beside the pipeline inlet 104. The suction port of the fourth powder collection pipe 10 is positioned away from the pipeline inlet 104. Thus, during the powder coating process, if powder drifts towards the pipeline inlet 104, the fourth powder collection pipe 10 can promptly capture and suck up this powder, thereby further reducing powder leakage at the pipeline inlet 104.

[0057] Understandably, the powder drawn in by the second powder collection pipe 8, the third powder collection pipe 9, and the fourth powder collection pipe 10 is eventually transported to the cyclone separator 5 through the first powder collection pipe 4.

[0058] Optionally, steps 11 are provided at both the inlet 101 and the outlet 102. Since some powder will fall to the bottom of the spraying chamber 1 during the spraying process, steps 11 are provided at both the inlet 101 and the outlet 102 to collect the powder falling to the bottom of the spraying chamber 1. To collect this powder, in an optional embodiment, a powder collection basin 12 or a powder receiving membrane is placed at the bottom of the spraying chamber 1. If a powder receiving membrane is provided at the bottom of the spraying chamber 1, it should be pressed down and fixed with a heavy object to prevent it from being blown away by the airflow.

[0059] The above description is only a preferred embodiment of the present utility model and does not limit the patent scope of the present utility model. All equivalent structural transformations made under the inventive concept of the present utility model using the contents of the present utility model specification and drawings, or direct / indirect applications in other related technical fields, are included within the patent protection scope of the present utility model.

Claims

1. A sheet metal powder coating device, comprising a powder coating chamber (1), a sheet metal conveying track disposed below the top of the powder coating chamber (1), reciprocating drive components (2) symmetrically disposed on the left and right outer sides of the powder coating chamber (1), and a powder coating component (3) connected to the reciprocating drive components (2); wherein the powder coating chamber (1) has a feed inlet (101) and a discharge outlet (102) on its front and rear sides respectively; characterized in that, Also includes: The first powder collection pipe (4) is connected to the top of the powder spraying chamber (1) and is in communication with the powder spraying chamber (1). Cyclone separator (5), the air inlet of the cyclone separator (5) is connected to the first powder collection pipe (4); A dust extraction fan (6) is connected to the air outlet of a cyclone separator (5); Collection box (7) is connected to the discharge port at the bottom of the cyclone separator (5).

2. The sheet metal powder coating device according to claim 1, characterized in that, Also includes: The second powder collection pipe (8) is connected to the first powder collection pipe (4), and the suction port of the second powder collection pipe (8) faces the feed port (101); The third powder collection pipe (9) is connected to the first powder collection pipe (4), and the suction port of the third powder collection pipe (9) faces the discharge port (102).

3. The sheet metal powder coating device according to claim 1, characterized in that, The reciprocating drive assembly (2) includes a base (21) and a Z-axis linear module (22) vertically mounted on the base (21); the powder spraying assembly (3) is connected to the movable end of the Z-axis linear module (22).

4. The sheet metal powder coating device according to claim 3, characterized in that, The reciprocating drive assembly (2) also includes guide rods (23) vertically mounted on the base (21) and located on both sides of the Z-direction linear module (22); the powder spraying assembly (3) includes a U-shaped movable frame (31), a spray gun mounting column (32) and a spray gun (33); the U-shaped movable frame (31) is horizontally arranged and connected to the movable end of the Z-direction linear module (22), and the U-shaped movable frame (31) is provided with a groove that cooperates with the guide rod (23); the spray gun mounting column (32) is arranged along the front and rear direction of the powder spraying work chamber (1), and the spray gun mounting column (32) is connected to the two ends of the U-shaped movable frame (31); the spray gun (33) is horizontally and side by side on the spray gun mounting column (32), and the spray gun (33) is perpendicular to the spray gun mounting column (32).

5. The sheet metal powder coating device according to claim 4, characterized in that, The left and right side walls of the powder spraying workshop (1) are provided with vertical openings (103) for the two ends of the U-shaped movable frame (31) to pass through; the vertical openings (103) are in pairs; the side walls of the powder spraying workshop (1) are also provided with pipeline passages (104), the pipeline passages (104) are located between the two vertical openings (103) in each group of vertical openings (103), and the pipeline passages (104) are opened in the lower half of the side wall of the powder spraying workshop (1).

6. The sheet metal powder coating device according to claim 5, characterized in that, It also includes a fourth powder collection pipe (10) with the same number as the pipeline access port (104). The fourth powder collection pipe (10) is connected to the first powder collection pipe (4), and the lower end of the fourth powder collection pipe (10) extends into the powder spraying room (1) and is located next to the pipeline access port (104). The suction port of the fourth powder collection pipe (10) is set away from the pipeline access port (104).

7. The sheet metal powder coating device according to claim 1, characterized in that, Both the inlet (101) and outlet (102) are provided with steps (11).

8. The sheet metal powder coating device according to claim 7, characterized in that, The bottom of the powder spraying room (1) is equipped with a powder collection tray (12) or a powder receiving membrane.

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