Steel member electrostatic spraying assembly line

Abstract

The utility model relates to the technical field of electrostatic spraying, in particular to a steel member electrostatic spraying assembly line which comprises a suspension conveying line and a pretreatment area. The pretreatment area is used for removing dust, grease and rust on the surface of the steel member; the steel component is driven by the hanging conveying line to advance and sequentially passes through the pretreatment area, the spraying area, the drying area and the discharging area. The pretreatment area is sequentially provided with a first water washing area, a softening area, a grinding and washing area and a second water washing area in the advancing direction of the steel member; a lifting appliance is arranged on the suspension conveying line; one end of the hanger is connected to the suspension conveying line, and the other end is fixedly connected to the steel member; the lifting appliance is driven by the hanging conveying line to rotate and advance, and then the steel component fixedly arranged at the lower end of the lifting appliance is driven to rotate and advance at the same time, so that comprehensive and dead-corner-free pretreatment operation, spraying operation and drying operation on the steel framework are achieved, and then the electrostatic spraying effect is improved.

Description

Technical Field

[0001] This application relates to the technical field of electrostatic spraying, and particularly to an electrostatic spraying production line for steel members. Background Art

[0002] Electrostatic spraying refers to a coating method that utilizes the principle of corona discharge to charge atomized paint negatively under the action of a high-voltage direct current electric field and adsorb it on the surface of a positively charged substrate for discharging. Electrostatic spraying uses electrostatic attraction to draw paint particles to the workpiece surface, significantly improving the utilization rate of paint and reducing waste. Compared with manual spraying, the production efficiency is increased by more than ten times, greatly saving the amount of paint used, reducing the emission of volatile organic compounds, and being beneficial to environmental protection. Electrostatic spraying uses less paint, reducing environmental pollution and energy consumption. Secondly, electrostatic spraying can form a uniform, smooth and plump paint film on the workpiece, improving adhesion and having good decorative properties. It is suitable for large-scale production line operations and is easy to achieve semi-automation or automation.

[0003] However, dust, grease, and rust on the surface of steel members will affect the adsorption effect of electrostatic spraying powder.

[0004] Therefore, it is necessary to provide an improved technical solution to address the deficiencies of the above-mentioned existing technologies. Summary of the Utility Model

[0005] The purpose of this application is to provide an electrostatic spraying production line for steel members to solve or alleviate the problems existing in the above-mentioned existing technologies.

[0006] To achieve the above purpose, this application provides the following technical solutions:

[0007] An electrostatic spraying production line for steel members, the production line includes a suspension conveyor line and a pretreatment area;

[0008] The pretreatment area is used to remove dust, grease, and rust on the surface of steel members;

[0009] The steel member travels under the drive of the suspension conveyor line and sequentially passes through the pretreatment area, spraying area, drying area, and blanking area;

[0010] The pretreatment area is sequentially provided with a first water washing area, a softening area, a grinding and washing area, and a second water washing area along the traveling direction of the steel member;

[0011] A spreader is arranged on the suspension conveyor line; one end of the spreader is connected to the suspension conveyor line, and the other end is fixedly connected to the steel member;

[0012] The spreader rotates and travels under the drive of the suspension conveyor line.

[0013] An electrostatic spraying production line for steel members as described above. Preferably, the suspension conveyor line is arranged in a loop.

[0014] An electrostatic spraying production line for steel members as described above. Preferably, the first water washing area, softening area, grinding and washing area, and the second water washing area are all in a trough-like structure.

[0015] The suspension conveyor line is arranged to descend in sections in the first water washing area, softening area, grinding and washing area, and the second water washing area.

[0016] An electrostatic spraying production line for steel members as described above. Preferably, the spraying area is provided with multiple groups of spraying devices.

[0017] The multiple groups of spraying devices are arranged crosswise on both sides of the suspension conveyor line along the advancing direction of the steel members.

[0018] An electrostatic spraying production line for steel members as described above. Preferably, the spraying area is further provided with a reciprocating mechanism for driving the multiple groups of spraying devices to move up and down.

[0019] An electrostatic spraying production line for steel members as described above. Preferably, the drying area is provided with a hot air circulation system and a drying chamber; the hot air circulation system is located outside the drying chamber.

[0020] The hot air circulation system includes an air outlet and an air return port; the air outlet is arranged on the lower side of the drying chamber, and the air return port is arranged on the upper side of the drying chamber.

[0021] An electrostatic spraying production line for steel members as described above. Preferably, the hot air circulation system further includes a gas treatment system for treating the gas in the drying chamber.

[0022] The gas in the drying chamber is treated by the gas treatment system and then blown into the drying chamber from the air outlet.

[0023] An electrostatic spraying production line for steel members as described above. Preferably, the gas treatment system is sequentially provided with a cooling layer, a primary filter layer, and an adsorption layer along the flow direction of the gas.

[0024] An electrostatic spraying production line for steel members as described above. Preferably, the suspension conveyor line includes a driving guide rail and a toothed guide rail that are arranged parallel to each other up and down along the advancing direction of the steel members; one end of the sling is rotatably and fixedly connected to the driving guide rail, and a gear is fixedly provided at one end of the sling, and the gear is in transmission cooperation with the toothed guide rail.

[0025] Driven by the driving guide rail, the gear rotates and advances along the toothed guide rail.

[0026] An electrostatic spraying production line for steel members as described above. Preferably, the suspension conveyor line includes driving guide rails and friction guide rails arranged in parallel up and down along the traveling direction of the steel members. One end of the spreader is rotatably and fixedly connected to the driving guide rail, and a friction wheel is fixedly provided at one end of the spreader. The friction wheel is in frictional engagement with the friction guide rail.

[0027] Driven by the driving guide rail, the friction wheel rotates and travels along the friction guide rail.

[0028] Compared with the closest prior art, the technical solution of the embodiment of the present application has the following beneficial effects:

[0029] By setting the spreader to rotate while traveling under the drive of the suspension conveyor line, the steel members fixedly arranged at the lower end of the spreader are driven to rotate while traveling, so as to realize comprehensive and dead-angle-free pretreatment operations, spraying operations, and drying operations on the steel frame, thereby improving the electrostatic spraying effect. Description of the Drawings

[0030] The specification drawings forming a part of the present application are used to provide a further understanding of the present application. The schematic embodiments and descriptions thereof of the present application are used to explain the present application and do not constitute an improper limitation to the present application. Among them:

[0031] Figure 1 FIG. 1 is a schematic plan layout diagram of an electrostatic spraying production line for steel members according to some embodiments of the present application;

[0032] Figure 2 FIG. 2 is a schematic structural diagram of the suspension conveyor line in the pretreatment area according to some embodiments of the present application;

[0033] Figure 3 FIG. 3 is a schematic plan layout diagram of the spraying area according to some embodiments of the present application;

[0034] Figure 4 FIG. 4 is a schematic structural diagram of the drying area according to some embodiments of the present application;

[0035] Figure 5 FIG. 5 is a schematic diagram of the rotational traveling cooperation between the suspension conveyor line and the spreader according to some embodiments of the present application.

[0036] Description of the Reference Numerals:

[0037] 1. First water washing area; 2. Second water washing area; 3. Softening area; 4. Abrasive washing area; 5. Loading area; 6. Unloading area; 7. Drying area; 8. Pretreatment area; 9. Spraying area; 10. Spraying device; 11. Suspension conveyor line; 12. Driving guide rail; 13. Toothed guide rail; 14. Suspension fixture; 15. Gear; 16. Air outlet; 17. Air return opening; 18. Cooling layer; 19. Primary filter layer; 20. Adsorption layer; 21. Drying chamber; 22. Hot air circulation system; 23. Reciprocating mechanism; 24. Steel member. Detailed implementation manners

[0038] The present application will be described in detail below with reference to the accompanying drawings and in conjunction with embodiments. Each example is provided by way of explanation of the present application rather than a limitation of the present application. In fact, those skilled in the art will clearly understand that modifications and variations can be made to the present application without departing from the scope or spirit of the present application. For example, features shown or described as part of one embodiment can be used in another embodiment to yield yet another embodiment. Therefore, it is desirable that the present application include such modifications and variations that fall within the scope of the appended claims and their equivalents.

[0039] In the following description, the terms "first / second / third" involved are only used to distinguish similar objects and do not represent a specific order of the objects. Understandably, "first / second / third" can be interchanged with a specific order or sequence when allowed, so that the embodiments of the present application described herein can be implemented in an order other than that shown or described herein.

[0040] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those of ordinary skill in the technical field to which this disclosure belongs. The terms used herein are only for the purpose of describing the embodiments of this disclosure and are not intended to limit this disclosure.

[0041] In the description of the present application, the orientation or positional relationships indicated by the terms "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", etc. are based on the orientation or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application rather than requiring the present application to be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation of the present application. The terms "connected", "connected to", and "disposed" used in the present application should be understood in a broad sense. For example, it can be a fixed connection or a detachable connection; it can be directly connected or indirectly connected through an intermediate component; it can be a wired connection, a radio connection, or a wireless communication signal connection. For those of ordinary skill in the art, the specific meanings of the above terms can be understood according to specific circumstances.

[0042] The following will be combined with the attached Figures 1-5A further detailed description is given to an electrostatic spraying production line for a steel member 24 in this application.

[0043] An electrostatic spraying production line for a steel member 24, the production line includes a hanging conveyor line 11 and a pretreatment area 8;

[0044] The pretreatment area 8 is used to remove dust, grease, and rust on the surface of the steel member 24;

[0045] The steel member 24 travels under the drive of the hanging conveyor line 11 and sequentially passes through the pretreatment area 8, the spraying area 9, the drying area 7, and the blanking area 6;

[0046] The pretreatment area 8 is sequentially provided with a first water washing area 1, a softening area 3, a grinding and washing area 4, and a second water washing area 2 along the traveling direction of the steel member 24;

[0047] A spreader 14 is arranged on the hanging conveyor line 11; one end of the spreader 14 is connected to the hanging conveyor line 11, and the other end is fixedly connected to the steel member 24;

[0048] The spreader 14 rotates and travels under the drive of the hanging conveyor line 11.

[0049] In a specific embodiment of this application, in combination with the attached Figures 1-2 As shown, along the traveling direction of the hanging conveyor line 11, the production line sequentially includes a loading area 5, a pretreatment area 8, a spraying area 9, a drying area 7, and a blanking area 6. A clamping jaw is provided at the other end of the spreader 14 for temporarily clamping and fixing the steel member 24. The loading area 5 and the blanking area 6 are provided with a flipping mechanism for automatic loading and unloading, or directly for manual loading and unloading operations. The flipping mechanism belongs to the prior art and will not be elaborated here. The first water washing area 1 is used to remove dust on the surface of the steel member 24, the softening area 3 is used to soften the rust on the surface of the steel member 24, the grinding and washing area 4 is used to grind the rust and spines of the steel member 24, the second water washing area 2 is used to wash the impurities remaining on the surface of the steel member 24 in the previous steps. Additionally, by setting the spreader 14 to rotate and travel while driving the hanging conveyor line 11, the steel member 24 fixedly arranged at the lower end of the spreader 14 is driven to rotate and travel, so as to realize a comprehensive and non-dead-angle pretreatment operation, spraying operation, and drying operation on the steel frame, thereby improving the electrostatic spraying effect.

[0050] The hanging conveyor line 11 is arranged in a ring shape.

[0051] In a specific embodiment of this application, the production line is arranged in a ring-shaped closed layout. On the one hand, it can save operating space; on the other hand, it is also convenient for loading and unloading operations.

[0052] The first water washing area 1, the softening area 3, the grinding and washing area 4, and the second water washing area 2 are all in a trough-like structure;

[0053] The hanging conveyor line 11 is arranged in a stepped-down manner in the first water washing area 1, softening area 3, grinding and washing area 4, and second water washing area 2.

[0054] In a specific embodiment of the present application, in combination with the attached Figure 2 As shown, the first water washing area 1 is specifically a first water washing tank; the softening area 3 is specifically a softening tank, and an inorganic acid solution is contained in the softening tank; the grinding and washing area 4 is specifically a grinding and washing tank, and abrasive particles are contained in the grinding and washing tank; the second water washing area 2 is specifically a second water washing tank, which is used to wash the residual inorganic acid solution, abrasive particles and other impurities on the surface of the steel member 24. The hanging conveyor line 11 is in an overall trapezoidal wave structure in the pretreatment area 8. When the steel member 24 travels to the first water washing area 1, softening area 3, grinding and washing area 4, and second water washing area 2, as the hanging conveyor line 11 descends, it descends and soaks into the corresponding tank structure to improve the pretreatment effect.

[0055] The spraying area 9 is provided with multiple groups of spraying devices 10;

[0056] The multiple groups of spraying devices 10 are arranged crosswise on both sides of the hanging conveyor line 11 along the traveling direction of the steel member 24.

[0057] In a specific embodiment of the present application, in combination with the attached Figure 3 As shown, the spraying area 9 is provided with two groups of spraying devices 10. The spraying device 10 specifically includes a rotary cup electrostatic spray gun. The two groups of rotary cup electrostatic spray guns are respectively arranged crosswise on the left and right sides of the hanging conveyor line 11, and cooperate with the rotational movement of the steel member 24 to achieve a comprehensive and non-blind-angle spraying operation on the steel member 24.

[0058] The spraying area 9 is further provided with a reciprocating mechanism 23 for driving the multiple groups of spraying devices 10 to move up and down.

[0059] In a specific embodiment of the present application, to further improve the spraying effect, each group of rotary cup electrostatic spray guns is provided with an up-and-down reciprocating mechanism 23.

[0060] The drying area 7 is provided with a hot air circulation system 22 and a drying chamber 21; the hot air circulation system 22 is located outside the drying chamber 21;

[0061] The hot air circulation system 22 includes an air outlet 16 and an air return port 17; the air outlet 16 is arranged on the lower side of the drying chamber 21, and the air return port 17 is arranged on the upper side of the drying chamber 21.

[0062] In a specific embodiment of the present application, in combination with the attached Figure 4As shown, the hot air circulation system 22 is integrally arranged outside the drying chamber 21. The hanging conveyor line 11 runs through the drying chamber 21 along the traveling direction. There are two air outlets 16, and the two air outlets 16 are respectively arranged on both sides of the hanging conveyor line 11. The hot air circulation system 22 further includes a blower and a heating device. During specific use, first start the blower. After the drying chamber 21 forms a gas circulation through the air outlet 16 and the air inlet, then start the heating device and adjust it to the set temperature to form a hot air circulation.

[0063] Since during drying, the moisture and other substances of the steel member 24 and other objects exist as steam and combustible gases after being heated, which affects the efficiency and safety of the drying furnace, the hot air circulation system 22 further includes a gas treatment system for treating the gas in the drying chamber 21;

[0064] The gas in the drying chamber 21 is treated by the gas treatment system and then blown into the drying chamber 21 from the air outlet 16.

[0065] The gas treatment system is sequentially provided with a cooling layer 18, a primary filter layer 19, and an adsorption layer 20 along the gas flow direction.

[0066] In a specific embodiment of the present application, in combination with the attached Figure 4 As shown, the cooling layer 18 is specifically a water curtain arranged outside the air return port 17, the primary filter layer 19 is specifically a fiber cotton absorption layer, and the adsorption layer 20 is specifically an activated carbon adsorption layer 20. The gas in the drying chamber 21 is sequentially treated by the cooling layer 18, the primary filter layer 19, and the adsorption layer 20, then heated by the heating device, and blown back into the drying chamber 21 from the air outlet 16.

[0067] The hanging conveyor line 11 includes a driving guide rail 12 and a toothed guide rail 13 that are arranged parallel to each other up and down along the traveling direction of the steel member 24; one end of the spreader 14 is rotatably and fixedly connected to the driving guide rail 12, and a gear 15 is fixedly arranged at one end of the spreader 14, and the gear 15 is in transmission cooperation with the toothed guide rail 13;

[0068] Driven by the driving guide rail 12, the gear 15 rotates and travels along the toothed guide rail 13.

[0069] In a specific embodiment of the present application, in combination with the attached Figure 5 As shown, the hanging conveyor line 11 includes a power device that drives the driving guide rail 12 to move along the traveling direction of the steel member 24. The driving guide rail 12 is specifically a groove-shaped structure. One end of the spreader 14 extends upward into the groove-shaped structure and is rotatably clamped and fixed to the groove-shaped structure. In addition, through the transmission cooperation of the gear 15 with the toothed guide rail 13 on one side, the gear 15 is driven by the driving guide rail 12 to rotate and travel along the toothed guide rail 13.

[0070] The suspension conveyor line 11 includes a driving guide rail 12 and a friction guide rail that are arranged parallel to each other up and down along the traveling direction of the steel member 24; one end of the spreader 14 is rotatably and fixedly connected to the driving guide rail 12, and a friction wheel is fixedly provided at one end of the spreader 14, and the friction wheel is in frictional engagement with the friction guide rail;

[0071] Driven by the driving guide rail 12, the friction wheel rotates and travels along the friction guide rail.

[0072] In a specific embodiment of the present application, the suspension conveyor line 11 includes a power device that drives the driving guide rail 12 to move along the traveling direction of the steel member 24. The driving guide rail 12 is specifically a groove-shaped structure. One end of the spreader 14 extends upward into the groove-shaped structure and is rotatably clamped and fixed to the groove-shaped structure, and is further in frictional engagement with the friction guide rail on one side through the friction wheel, so that the friction wheel rotates and travels along the friction guide rail under the drive of the driving guide rail 12.

[0073] The above are only the preferred embodiments of the present application and are not intended to limit the present application. For those skilled in the art, various changes and modifications can be made to the present application. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included within the protection scope of the present application.

Claims

1. A steel component electrostatic spraying line, characterized in that: The assembly line includes a hanging conveying line and a pre-treatment area; The pretreatment area is used to remove dust, grease and rust from the surface of the steel component; The steel component moves under the drive of the suspension conveyor line and passes through the pretreatment area, spraying area, drying area and unloading area in sequence; The pretreatment zone is provided with a first water washing zone, a softening zone, a grinding washing zone, and a second water washing zone in sequence along the traveling direction of the steel component; A hanger is provided on the suspension conveyor line; one end of the hanger is connected to the suspension conveyor line, and the other end is fixedly connected to the steel member; The hanger is driven by the suspension conveyor line to rotate and move.

2. The electrostatic spraying line for steel components according to claim 1, characterized in that: The suspension conveyor line is arranged in a ring shape.

3. The electrostatic spraying line for steel components according to claim 1, characterized in that: The first water washing zone, softening zone, grinding washing zone and first water washing zone are all trough-shaped structures; The hanging conveyor line is arranged in a segmented downward manner in the first water washing area, the softening area, the grinding washing area, and the second water washing area.

4. The electrostatic spraying line for steel components according to claim 1, characterized in that: The spraying area is provided with a plurality of spraying devices; The multiple groups of spraying devices are cross-arranged on both sides of the suspension conveyor line along the traveling direction of the steel component.

5. The electrostatic spraying line for steel components as claimed in claim 4, characterized in that: The spraying area is also provided with a reciprocating mechanism for driving the multiple groups of spraying devices to move up and down.

6. The electrostatic spraying line for steel components according to claim 1, characterized in that: The drying area is provided with a hot air circulation system and a drying chamber; the hot air circulation system is located outside the drying chamber; The hot air circulation system comprises an air outlet and an air return outlet; the air outlet is arranged at the lower side of the drying chamber, and the air return outlet is arranged at the upper side of the drying chamber.

7. The electrostatic spraying line for steel components as claimed in claim 6, characterized in that: The hot air circulation system also includes a gas processing system for processing the gas in the drying chamber; The gas in the drying chamber is processed by the gas processing system and then blown into the drying chamber from the air outlet.

8. The electrostatic spraying line for steel components as claimed in claim 7, characterized in that: The gas treatment system is provided with a cooling layer, a primary filter layer and an adsorption layer in sequence along the flow direction of the gas.

9. The electrostatic spraying line for steel components according to claim 1, characterized in that: The suspension conveyor line includes a driving guide rail and a toothed guide rail arranged in parallel upward and downward along the traveling direction of the steel member; one end of the sling is rotatably fixedly connected to the driving guide rail, and one end of the sling is also fixedly provided with a gear, and the gear is in transmission cooperation with the toothed guide rail; The gear is driven by the driving guide rail to rotate and move along the toothed guide rail.

10. The electrostatic spraying line for steel components according to claim 1, characterized in that: The suspension conveyor line comprises a driving guide rail and a friction guide rail arranged in parallel upward and downward along the traveling direction of the steel member; one end of the sling is rotatably fixedly connected to the driving guide rail, and one end of the sling is also fixedly provided with a friction wheel, and the friction wheel is frictionally matched with the friction guide rail; The friction wheel is driven by the driving guide rail to rotate and move along the friction guide rail.

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