Surface treatment equipment and treatment method for steel door frame production

Abstract

The present invention belongs to the technical field of steel door frames and discloses a surface treatment equipment for steel door frame production and a treatment method thereof, comprising a pickling machine box, wherein the pickling machine box is provided with a treatment part, and the treatment part includes a group groove plate; by respectively clamping the steel door frame into a plurality of groups of rubber plywood installed in the group groove plate, the group groove plate can synchronously drive the rubber plywood and the brush to move downward, and the brush will rub against the contacted surface of the steel door frame when it moves downward, thereby cleaning the dirt and rust on the surface thereof; when the suction force is generated by the bellows, the seal plug clamped into the water tank is driven to move downward, and is no longer blocked when it is separated from the water tank, so that the water in the water tank can flow down naturally; when the rubber plywood is passively moved upward, the surface of the steel door frame that is moved upward is synchronously driven to be cleaned by water, thereby the surface of the steel door frame can be treated with multiple production steps at one time, thereby saving production transfer time and improving production and processing efficiency.

Description

Technical Field

[0001] The invention belongs to the technical field of steel door frames, and in particular relates to surface treatment equipment and a treatment method for steel door frame production. Background Art

[0002] Steel doors are widely used indoors and outdoors in various buildings. Steel doors used for outdoor use are generally used for various purposes. Steel doors are generally composed of doors and door frames. In the current production process of steel door frames, the area on the door frame profile used for connecting with the wall bolts is usually blanked out as a whole through a blanking process. In the existing technology, when producing steel door frames, a necessary step is to treat and clean their surfaces. The purpose is to remove impurities such as oil, rust and oxide scale on the surface of the door frame, laying a good foundation for subsequent processing. The commonly used methods include pickling, sandblasting or grinding. Pickling removes surface dirt through chemical reaction, sandblasting uses high-speed jet sand to impact the surface to remove impurities and increase surface roughness, and grinding uses abrasives to carefully treat the surface to achieve a smooth effect.

[0003] However, in the prior art, the surface treatment process of steel door frames is carried out step by step. After pickling, manual assistance is required to transfer the door frame as a whole and move it to the next processing step. The time generated by the transfer undoubtedly increases the additional production and processing time, which results in a slow production speed of steel door frames and an inability to improve the efficiency of their surface treatment. Summary of the Invention

[0004] In order to solve the problems raised in the above background technology, the present invention provides a surface treatment device and a treatment method for steel door frame production.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a surface treatment equipment for steel door frame production, comprising a pickling machine box, a processing part is provided on the pickling machine box, and the processing part includes a group of groove plates. The inner walls at both ends of the pickling machine box are provided with rectangular long grooves that are fitted and slidably connected to the outer walls at both ends of the group of groove plates. The top outer walls of the group of groove plates are fixedly connected with multiple groups of rubber splints for clamping and limiting the steel door frame. Each group of rubber splints has a through hole in the inner wall at one end thereof that fits and rotates. There are multiple pulleys in dynamic connection, and each single group of pulleys is jointly and fixedly connected with a rotating rod. A section of the rod body of each rotating rod is rotatably connected to one end of each corresponding rubber splint. Multiple groups of brushes for scrubbing the surface of the steel door frame are also fixedly connected to the inner wall of the group of groove plates. A cleaning structure for cleaning the surface dirt of the corresponding brush is provided on one end of each rotating rod, and a flushing structure for washing the steel door frame after pickling is provided on both sides of the pickling machine box.

[0006] Preferably, a U-shaped plug plate is intermittently and tightly clamped on the bottom end of the pickling machine box, and a plurality of springs are fixedly connected to the outer wall of the bottom end of the U-shaped plug plate, and the bottom end of each spring is fixedly connected to the inner wall of the bottom end of the pickling machine box.

[0007] Preferably, each of the cleaning structures includes a rotating wheel fixedly connected to one end of the rotating rod, a rectangular groove plate is slidably connected to the rod body of the rotating wheel, a sliding rod is fixedly connected to the outer wall of one end of the rectangular groove plate, a slide plate is fixedly connected to the rod body of the slide rod, and a push scraper is fixedly connected to the outer wall of one end of the slide plate near the bottom.

[0008] Preferably, the plate body of the push scraper is only slidably connected to the row of brush bodies with longer diameters in the corresponding single group of brushes, and a plate groove is specifically provided on one side plate body of the group of groove plates for fitting and sliding connection with the corresponding side plate body of the push scraper.

[0009] Preferably, each of the flushing structures includes a telescopic electric cylinder fixedly connected to the outer wall of the bottom end of the pickling machine box, and a magnetic plate is fixedly connected to the top outer wall of the telescopic electric cylinder.

[0010] Preferably, the outer wall of one end of the magnetic plate and the outer wall of one end of the pickling machine box are correspondingly fitted and slidably connected, and the magnetic plate specifically has one end of a slot plate made of metal material for magnetic attraction.

[0011] Preferably, a bellows is fixedly connected to the top outer wall of the magnetic plate, the top of the bellows is fixedly connected to a water tank, and L-shaped guardrails are fixedly connected to the outer walls on both sides of the bottom end of the water tank, and the other ends of the two L-shaped guardrails are fixedly connected to the outer wall of one end of the pickling machine box.

[0012] Preferably, a seal plug can be intermittently and tightly clamped in the inner wall of the bottom end of the water tank, a spring 2 is fixedly connected to the outer wall of the top end of the seal plug, a guardrail is fixedly connected to the top end of the spring 2, and the outer wall of one end of the guardrail is fixedly connected to the inner wall of one end of the water tank.

[0013] Preferably, a water pipe is fixedly connected to one end of the corrugated pipe near the top, a rectangular water trough plate is fixedly connected to the pipe body of the water pipe, and a plurality of nozzles are fixedly connected to the inner wall of the rectangular water trough plate.

[0014] A surface treatment method for steel door frame production, the specific treatment method is as follows:

[0015] S1. Surface pretreatment is first performed. Common methods include pickling, sandblasting or grinding. Pickling removes surface dirt through chemical reactions. Sandblasting uses high-speed jets of sand to impact the surface, removing impurities and increasing surface roughness. Grinding uses abrasives to finely treat the surface to achieve a smooth effect. Phosphating treatment is then performed. Through a specific chemical reaction, a dense phosphate film is formed on the surface of the door frame. This film can effectively block air and moisture, preventing further corrosion of the door frame.

[0016] S2. Then spray the primer evenly on the door frame surface to ensure that the primer can firmly adhere to the door frame and form a good anti-rust effect. Then you can spray the topcoat (optional wood grain transfer) or choose to spray the topcoat directly to obtain a uniform and smooth surface effect. If a wood grain effect is required, a special process is used to transfer the wood grain pattern to the door frame surface, and then a paint treatment is performed to make the wood grain pattern more realistic and durable.

[0017] S3. Finally, high-temperature baking paint is carried out. The door frame with sprayed topcoat (or transferred wood grain) is sent to the baking paint room for high-temperature curing treatment. The high temperature environment can make the paint film dry and solidify quickly to form a hard protective layer. Then the surface is refined and the door frame surface is subjected to the final treatment, including grinding, polishing and other steps to remove minor surface defects and unevenness, making the door frame surface smoother and more delicate. Through the above steps, the steel door frame can obtain good appearance and excellent performance to meet the needs of various architectural decoration and use.

[0018] Compared with the prior art, the present invention has the following beneficial effects:

[0019] The present invention clamps the steel door frame into the multiple groups of rubber plywood installed in the groove group plate until the bottom end of the steel door frame is pushed to the top end of the U-shaped plug plate, so that the U-shaped plug plate squeezes the spring and is tightly clamped into the pickling box after deformation. Then, the pickling liquid can be poured into the pickling box to soak the steel door frame in the pickling box. The downward movement of the groove group plate can synchronously drive the rubber plywood and the brush to move downward. The downward movement of the brush will rub the surface of the steel door frame it contacts, thereby cleaning the dirt and rust on the surface.

[0020] The present invention drives the connected rotating rod to rotate uniformly when multiple pulleys are passively rotated, and the rotating rotating rod can drive the rotating wheel to rotate synchronously, and the rotating rotating wheel can slide on the inner wall of the rectangular groove plate, thereby pushing the rectangular groove plate and the sliding rod to move back and forth, and the moving sliding rod can drive the sliding plate and the pushing scraper to perform limited and guided horizontal reciprocating movement in the groove plate on one side of the groove plate group, so that the reciprocating pushing scraper can perform a certain distance of flat scraping and cleaning of the stains on the brush that have been stained on the surface of the steel door frame, thereby avoiding the occurrence of an event in which the cleaning effect is deteriorated due to excessive dirt and grime on the brush surface;

[0021] When the present invention generates suction force through the bellows, it will drive the seal plug connected to the water tank to move downward, and will be separated from the water tank and no longer blocked, so that the water in the water tank can flow down naturally. The seal plug that moves downward passively will synchronously drive spring 2 to deform, which is conducive to the subsequent automatic upward reset of the seal plug. Then, when the telescopic electric cylinder moves upward, it will drive the bellows to be squeezed, so that the water previously pumped into its interior can enter the rectangular water trough plate through the water pipe. At the same time, the impact force generated when the bellows is squeezed drives the water to be sprayed out from multiple nozzles respectively, so that when the rubber splint is passively moved upward, the steel door frame that is synchronously driven to move upward is cleaned with water on its surface, thereby being able to perform multiple production steps on the surface of the steel door frame at one time, saving production transfer time and improving production and processing efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0023] Figure 2 This is a schematic diagram of the overall cross-sectional front plan structure of the present invention;

[0024] Figure 3 It is a schematic diagram of the overall cross-sectional three-dimensional structure of the present invention;

[0025] Figure 4 This is a schematic diagram of the partial split structure of the processing unit of the present invention;

[0026] Figure 5 For the present invention Figure 3 A schematic diagram of the partially enlarged structure at center A;

[0027] Figure 6 For the present invention Figure 4 A schematic diagram of the partially enlarged structure at point B in the middle;

[0028] Figure 7 For the present invention Figure 3 A schematic diagram of the partially enlarged structure at point C in the middle;

[0029] Figure 8 For the present invention Figure 3 Schematic diagram of the locally enlarged structure at point D in the middle.

[0030] In the picture:

[0031] 1. Pickling chassis;

[0032] 2. Processing unit; 21. Grooved plate; 22. Rubber splint; 23. Pulley; 24. Rotating rod; 25. Brush; 26. U-shaped plug plate; 27. Spring 1; 28. Telescopic electric cylinder; 29. ​​Magnetic plate; 230. Rotating wheel; 231. Rectangular groove plate; 232. Sliding rod; 233. Slide plate; 234. Scraper; 235. Bellows; 236. Water tank; 237. Stamp plug; 238. Spring 2; 239. Guardrail; 240. Water pipe; 241. Rectangular water trough plate; 242. Nozzle. DETAILED DESCRIPTION

[0033] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0034] like Figures 1 to 8 As shown, the present invention provides a surface treatment equipment for steel door frame production, including a pickling machine box 1, a processing part 2 is provided on the pickling machine box 1, and the processing part 2 includes a group groove plate 21. The inner walls at both ends of the pickling machine box 1 are provided with rectangular long grooves that are fitted and slidably connected to the outer walls at both ends of the group groove plate 21. The top outer wall of the group groove plate 21 is fixedly connected with multiple groups of rubber splints 22 for clamping and limiting the steel door frame. The inner wall of one end of each group of rubber splints 22 is penetrated by multiple sliding splints that are fitted and rotatably connected. Wheel 23, each single group of pulleys 23 is jointly and fixedly connected with a rotating rod 24, a section of the rod body of each rotating rod 24 is connected to one end of each corresponding rubber splint 22 for rotation, and a plurality of groups of brushes 25 for scrubbing the surface of the steel door frame are fixedly connected to the inner wall of the groove plate 21, and a cleaning structure for cleaning the surface dirt of the corresponding brush 25 is provided on one end of each rotating rod 24, and a flushing structure for washing the steel door frame after pickling is provided on both sides of the pickling machine box 1;

[0035] A U-shaped plug plate 26 is intermittently and tightly connected to the bottom end of the pickling machine box 1, and a plurality of springs 27 are fixedly connected to the outer wall of the bottom end of the U-shaped plug plate 26. The bottom end of each spring 27 is fixedly connected to the inner wall of the bottom end of the pickling machine box 1.

[0036] The above scheme is adopted: the steel door frame is respectively clamped into the multiple groups of rubber splints 22 installed in the groove plate 21 until the bottom end of the steel door frame is pushed to the top end of the U-shaped plug plate 26, so that the U-shaped plug plate 26 squeezes the spring 27 and is deformed and tightly clamped into the pickling box 1. Then the pickling liquid can be poured into the pickling box 1 to soak the steel door frame located in the pickling box 1. The downward movement of the groove plate 21 can synchronously drive the rubber splint 22 and the brush 25 to move downward. The downward movement of the brush 25 will rub against the contact surface of the steel door frame, thereby cleaning the dirt and rust on its surface, and the multiple pulleys 23 installed in the rubber splint 22 can improve the smoothness of the downward movement of the rubber splint 22.

[0037] Each cleaning structure includes a rotating wheel 230 fixedly connected to one end of the rotating rod 24, and a rectangular groove plate 231 is slidably connected to the rod body of the rotating wheel 230. A sliding rod 232 is fixedly connected to the outer wall of one end of the rectangular groove plate 231, and a slide plate 233 is fixedly connected to the rod body of the slide rod 232. A push scraper 234 is fixedly connected to the outer wall of one end of the slide plate 233 near the bottom. The plate body of the push scraper 234 is only slidably connected to the row of brush bodies with longer diameters in the corresponding single group of brushes 25. A plate groove is specifically opened on one side of the groove plate 21 for slidably connecting with the corresponding side plate body of the push scraper 234.

[0038] The above-mentioned solution is adopted: when multiple pulleys 23 rotate passively, they will uniformly drive the connected rotating rod 24 to rotate, so that the rotating rotating rod 24 can drive the rotating wheel 230 to rotate synchronously, and the rotating rotating wheel 230 can slide on the inner wall of the rectangular groove plate 231, thereby pushing the rectangular groove plate 231 and the sliding rod 232 to move back and forth, and the moving sliding rod 232 will drive the slide plate 233 and the push scraper 234 to perform limited and guided horizontal reciprocating movement in the groove plate on one side of the groove plate group 21, so that the reciprocating push scraper 234 will scrape and clean the stains on the brush 25 that have been contaminated on the surface of the steel door frame at a certain distance.

[0039] Each flushing structure includes a telescopic electric cylinder 28 fixedly connected to the outer wall of the bottom end of the pickling box 1, and a magnetic plate 29 is fixedly connected to the top outer wall of the telescopic electric cylinder 28. The outer wall of one end of the magnetic plate 29 and the outer wall of one end of the pickling box 1 are correspondingly fitted and slidably connected, and the magnetic plate 29 specifically has one end of a groove plate 21 made of metal material for magnetic attraction. A bellows 235 is fixedly connected to the top outer wall of the magnetic plate 29, and a water tank 236 is fixedly connected to the top of the bellows 235. L-shaped fences are fixedly connected to the outer walls on both sides of the bottom end of the water tank 236, and the other ends of the two L-shaped fences are fixedly connected to the outer wall of one end of the pickling box 1.

[0040] Adopt the above scheme: start the telescopic electric cylinder 28 to drive the magnetic plate 29 to move downward, the passively downward moving magnetic plate 29 will move downward synchronously with the magnetically attracted slot plate 21, and will also synchronously drive the bellows 235 to expand and extend, generating suction force.

[0041] A seal plug 237 can be intermittently and tightly clamped in the inner wall of the bottom end of the water tank 236, and a spring 238 is fixedly connected to the outer wall of the top end of the seal plug 237. A baffle 239 is fixedly connected to the top end of the spring 238. The outer wall of one end of the baffle 239 is fixedly connected to the inner wall of one end of the water tank 236. A water pipe 240 is fixedly connected to the end of the bellows 235 near the top, and a rectangular water trough plate 241 is also fixedly connected to the pipe body of the water pipe 240. A plurality of nozzles 242 are fixedly connected around and through the inner wall of the rectangular water trough plate 241.

[0042] The above scheme is adopted: when the bellows 235 generates suction force, it will drive the seal plug 237 connected to the water tank 236 to move downward, and disengage from the water tank 236 and no longer block it, so that the water in the water tank 236 can flow down naturally, and the seal plug 237 that moves downward passively will synchronously drive the spring 238 to deform, which is conducive to subsequently driving the seal plug 237 to automatically move up and reset. Then, when the telescopic electric cylinder 28 moves upward, it will drive the seal plug 237 to be squeezed into the bellows 235, so that the water previously pumped into the bellows can enter the rectangular water trough plate 241 through the water pipe 240. At the same time, the impact force generated when the bellows 235 is squeezed drives the water to be sprayed out from multiple nozzles 242 respectively, so that the surface of the steel door frame that is synchronously driven to move upward when the rubber splint 22 is passively moved upward is cleaned with water.

[0043] A surface treatment method for steel door frame production, the specific treatment method is as follows:

[0044] S1. Surface pretreatment is first performed. Common methods include pickling, sandblasting or grinding. Pickling removes surface dirt through chemical reactions. Sandblasting uses high-speed jets of sand to impact the surface, removing impurities and increasing surface roughness. Grinding uses abrasives to finely treat the surface to achieve a smooth effect. Phosphating treatment is then performed. Through a specific chemical reaction, a dense phosphate film is formed on the surface of the door frame. This film can effectively block air and moisture, preventing further corrosion of the door frame.

[0045] S2. Then spray the primer evenly on the door frame surface to ensure that the primer can firmly adhere to the door frame and form a good anti-rust effect. Then you can spray the topcoat (optional wood grain transfer) or choose to spray the topcoat directly to obtain a uniform and smooth surface effect. If a wood grain effect is required, a special process is used to transfer the wood grain pattern to the door frame surface, and then a paint treatment is performed to make the wood grain pattern more realistic and durable.

[0046] S3. Finally, high-temperature baking paint is carried out. The door frame with sprayed topcoat (or transferred wood grain) is sent to the baking paint room for high-temperature curing treatment. The high temperature environment can make the paint film dry and solidify quickly to form a hard protective layer. Then the surface is refined and the door frame surface is subjected to the final treatment, including grinding, polishing and other steps to remove minor surface defects and unevenness, making the door frame surface smoother and more delicate. Through the above steps, the steel door frame can obtain good appearance and excellent performance to meet the needs of various architectural decoration and use.

[0047] The working principle and use process of the present invention are as follows: the steel door frame is respectively clamped into the multiple groups of rubber splints 22 installed in the group slot plate 21 until the bottom end of the steel door frame is pushed to the top end of the U-shaped plug plate 26, so that the U-shaped plug plate 26 squeezes the spring 27 and is deformed and tightly clamped into the pickling box 1, and then the pickling liquid can be poured into the pickling box 1 to soak the steel door frame located in the pickling box 1, and then the telescopic electric cylinder 28 is started to drive the magnetic plate 29 to move downward, and the passively moving magnetic plate 29 will move downward synchronously with the magnetic group slot plate 21, so that the downward moving group slot plate 21 can synchronously drive the rubber splint 22 and the brush 25 to move downward, and the downward movement of the brush 25 will rub against the contacted surface of the steel door frame, thereby cleaning the dirt and rust on the surface, and the rubber splint 22 The plurality of pulleys 23 installed can improve the smoothness of the downward movement of the rubber splint 22, and when the plurality of pulleys 23 are passively rotated, they will uniformly drive the connected rotating rods 24 to rotate, thereby the rotating rotating rods 24 can drive the rotating wheels 230 to rotate synchronously, and the rotating rotating wheels 230 can slide on the inner wall of the rectangular groove plate 231, thereby pushing the rectangular groove plate 231 and the sliding rod 232 to move back and forth, and the moving sliding rod 232 will drive the sliding plate 233 and the pushing scraper 234 to perform a limited and guided horizontal reciprocating movement in the groove plate of one side of the group groove plate 21, thereby the reciprocating pushing scraper 234 will scrape and clean the stains on the brush 25 that have been stained on the surface of the steel door frame at a certain distance, thereby avoiding the occurrence of an event in which the cleaning effect is poor due to excessive dirt and grime on the surface of the brush 25;

[0048] At the same time, when the telescopic electric cylinder 28 drives the magnetic plate 29 to move downward, it will also synchronously drive the bellows 235 to expand and extend to generate suction force, driving the seal plug 237 connected to the water tank 236 to move downward, and no longer block it from the water tank 236, so that the water in the water tank 236 can flow down naturally. The seal plug 237 that moves downward passively will synchronously drive the spring 238 to deform, which is conducive to the subsequent automatic upward reset of the seal plug 237. Then, when the telescopic electric cylinder 28 moves upward, it will The water is driven to be squeezed into the bellows 235, so that the water previously pumped into the bellows can enter the rectangular water trough plate 241 through the water pipe 240. At the same time, the impact force generated by the squeezing of the bellows 235 drives the water to be sprayed out from multiple nozzles 242 respectively, so that when the rubber splint 22 is passively moved upward, the surface of the steel door frame that is driven to move upward is cleaned with water. In this way, the surface of the steel door frame can be processed in multiple production steps at one time, saving production transfer time and improving production and processing efficiency.

[0049] The first point that needs to be supplemented is that when the rubber splint 22 is passively moved downward, the U-shaped plug plate 26 provides a limiting resistance for the steel door frame, so the downward movement process of the rubber splint 22 will be freely moved downward through the pulley 23, and the downward movement process will still have a limiting clamping effect on the steel door frame. On the contrary, when the rubber splint 22 is passively moved upward, the clamped and limited steel door frame has no resistance, and then it will move upward synchronously with the rubber splint 22, and the steel door frame after moving upward will no longer press against the U-shaped plug plate 26. Therefore, the U-shaped plug plate 26 will be automatically reset by the spring 27. At this time, the pickling liquid in the pickling machine box 1 will naturally flow down, and a collection box with a filter screen prepared in advance can be used to collect the filtered pickling liquid, so that it can be filtered and reused.

[0050] The second point that needs to be added is that when the telescopic electric cylinder 28 indirectly drives the steel door frame to move upward so that it no longer presses against the U-shaped plug plate 26, it will pause for some time to provide sufficient downstream time for the pickling liquid. This is to avoid mixing of the water washing liquid and the pickling liquid, thereby reducing the pickling effect when the pickling liquid is reused.

[0051] It should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that includes a list of elements includes not only those elements but also other elements not explicitly listed, or elements inherent to such process, method, article, or apparatus.

[0052] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions, and variations may be made to these embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the appended claims and their equivalents.

Claims

1. A surface treatment device for steel door frame production, comprising a pickling machine box (1), characterized in that: The pickling machine box (1) is provided with a processing part (2), and the processing part (2) includes a groove plate (21). The inner walls at both ends of the pickling machine box (1) are provided with rectangular long grooves corresponding to the outer walls at both ends of the groove plate (21) for sliding connection. The top outer wall of the groove plate (21) is fixedly connected with a plurality of rubber splints (22) for clamping and limiting the steel door frame. The inner wall of one end of each group of rubber splints (22) is penetrated and rotatably connected with a plurality of pulleys (23). Each single group of pulleys (23) has a plurality of pulleys (23). A rotating rod (24) is fixedly connected to the rotating rod (24), and a section of the rod body of each rotating rod (24) is connected to one end of each corresponding rubber splint (22) for rotation. A plurality of brushes (25) for cleaning the surface of the steel door frame are fixedly connected to the inner wall of the group groove plate (21). A cleaning structure for cleaning the surface dirt of the corresponding brush (25) is provided on one end of each rotating rod (24). A flushing structure for washing the steel door frame after pickling is provided on both sides of the pickling machine box (1); A U-shaped plug plate (26) is intermittently and tightly connected to the bottom end of the pickling machine box (1), and a plurality of springs (27) are fixedly connected to the outer wall of the bottom end of the U-shaped plug plate (26), and the bottom end of each spring (27) is fixedly connected to the inner wall of the bottom end of the pickling machine box (1); Each of the cleaning structures comprises a rotating wheel (230) fixedly connected to one end of the rotating rod (24); a rectangular groove plate (231) is slidably connected to the rod body of the rotating wheel (230); a sliding rod (232) is fixedly connected to the outer wall of one end of the rectangular groove plate (231); a slide plate (233) is fixedly connected to the rod body of the slide rod (232); and a push scraper (234) is fixedly connected to the outer wall of one end of the slide plate (233) near the bottom; The plate body of the scraping plate (234) is only connected to the row of brush bodies with a longer diameter in the corresponding single group of brushes (25) in a sliding manner, and a plate groove is also provided on one side plate body of the groove plate (21) for fitting and sliding connection with the side plate body of the scraping plate (234); Each of the flushing structures comprises a telescopic electric cylinder (28) fixedly connected to the outer wall of the bottom end of the pickling machine box (1), and a magnetic plate (29) is fixedly connected to the outer wall of the top side of the telescopic electric cylinder (28); One end outer wall of the magnetic plate (29) and one end outer wall of the pickling machine box (1) are correspondingly fitted and slidably connected, and the magnetic plate (29) is also magnetically attracted to one end of the slot assembly plate (21) made of metal material; A bellows (235) is fixedly connected to the outer wall of the top end of the magnetic plate (29), a water tank (236) is fixedly connected to the top end of the bellows (235), and L-shaped guardrails are fixedly connected to the outer walls on both sides of the bottom end of the water tank (236), and the other ends of the two L-shaped guardrails are fixedly connected to the outer wall of one end of the pickling machine box (1).

2. The surface treatment equipment for steel door frame production according to claim 1, characterized in that: A seal plug (237) can be intermittently and tightly engaged in the inner wall of the bottom end of the water tank (236), a spring 2 (238) is fixedly connected to the outer wall of the top end of the seal plug (237), a baffle (239) is fixedly connected to the top end of the spring 2 (238), and an outer wall of one end of the baffle (239) is fixedly connected to an inner wall of one end of the water tank (236).

3. The surface treatment equipment for steel door frame production according to claim 2, characterized in that: A water pipe (240) is fixedly connected to one end of the corrugated pipe (235) near the top, and a rectangular water trough plate (241) is fixedly connected to the pipe body of the water pipe (240). A plurality of nozzles (242) are fixedly connected to the inner wall of the rectangular water trough plate (241).

4. A surface treatment method for steel door frame production, applied to the surface treatment equipment for steel door frame production according to any one of claims 1 to 3, characterized in that: The specific processing methods are as follows: S1. Surface pretreatment is first performed. Common methods include pickling, sandblasting or grinding. Pickling removes surface dirt through chemical reactions. Sandblasting uses high-speed jets of sand to impact the surface, removing impurities and increasing surface roughness. Grinding uses abrasives to finely treat the surface to achieve a smooth effect. Phosphating treatment is then performed. Through a specific chemical reaction, a dense phosphate film is formed on the surface of the door frame. This film can effectively block air and moisture, preventing further corrosion of the door frame. S2. Then spray the primer evenly on the door frame surface to ensure that the primer can firmly adhere to the door frame and form a good anti-rust effect. Then you can spray the topcoat or choose to spray the topcoat directly to obtain a uniform and smooth surface effect. If a wood grain effect is required, a special process is used to transfer the wood grain pattern to the door frame surface, and then a paint treatment is performed to make the wood grain pattern more realistic and durable. S3. Finally, high-temperature baking paint is carried out. The door frame sprayed with topcoat is sent to the baking paint room for high-temperature curing treatment. The high-temperature environment can make the paint film dry and solidify quickly to form a hard protective layer. Then the surface is refined and the surface of the door frame is subjected to the final treatment, including grinding and polishing, to remove minor surface defects and unevenness, making the surface of the door frame smoother and more delicate. Through the above steps, the steel door frame can obtain good appearance and excellent performance to meet the needs of various architectural decoration and use.

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