CN110918348B

CN110918348B - Sheet metal part surface treatment processing device

Info

Publication number: CN110918348B
Application number: CN201911279884.8A
Authority: CN
Inventors: 黄秀兰
Original assignee: Ningxia Mengyuan Yonglin Agricultural Technology Co ltd
Current assignee: Ningxia Mengyuan Yonglin Agricultural Technology Co.,Ltd.
Priority date: 2019-12-13
Filing date: 2019-12-13
Publication date: 2021-11-23
Anticipated expiration: 2039-12-13
Also published as: CN110918348A

Abstract

The invention discloses a sheet metal part surface treatment machining device which comprises a paint spraying box and sliding columns, wherein a base is installed at the bottom of the paint spraying box, supporting columns are welded on two sides of the top of the base, a gear belt is arranged between the two supporting columns, first idler wheels are rotatably connected to the tops of the two supporting columns, the two first idler wheels are wrapped on the inner surface wall of the gear belt, a plurality of groups of fixing frames are welded on two sides of the outer portion of the gear belt at equal intervals, an air cylinder is installed on the inner side of each fixing frame, and a clamping mechanism is installed at one end of the air cylinder. According to the clamping device, the first electric pole and the second electric pole are connected, so that the air pump starts to work, the air bag is inflated to extrude the extrusion plug, the clamping stability is greatly improved, the clamping effect is realized only by inwards extruding the clamping mechanism, the clamping efficiency and convenience are improved, the arrangement of the second roller wheel ensures that metal plates can be conveyed along with the gear belt in a one-way mode while the clamping is stabilized, and the practicability is greatly improved.

Description

Sheet metal part surface treatment processing device

Technical Field

The invention relates to the technical field of sheet metal production and processing, in particular to a sheet metal part surface treatment processing device.

Background

The sheet metal is a comprehensive cold working process aiming at a metal sheet, and comprises shearing, punching, cutting, compounding, folding, welding, riveting, splicing, forming and the like, and is characterized in that the thickness of the same part is consistent, a product processed by the sheet metal process is called a sheet metal part, the sheet metal parts in different industries are generally different and are mainly used as a name during assembly, and the sheet metal part has the characteristics of light weight, high strength, conductivity (capable of being used for electromagnetic shielding), low cost, good large-scale mass production performance and the like, and is widely applied to the fields of electronic appliances, communication, automobile industry, medical appliances and the like, for example, in computer cases, mobile phones and MP3, the sheet metal part is an indispensable component.

However, the surface treatment processing technology of the existing sheet metal parts is various, the invention is specially used for a sheet metal surface paint spraying device, however, in the process of paint spraying and conveying of the sheet metal, the sheet metal is easy to shake due to machine vibration, so that paint spraying is uneven, the paint spraying efficiency is greatly reduced, secondly, the existing sheet metal surface paint spraying device mostly adopts an air heater or a large machine to carry out drying treatment on the sheet metal after paint spraying, the energy can not be reasonably utilized, the processing cost is greatly improved, finally, the existing sheet metal surface paint spraying device mostly directly sprays paint through a paint spraying pipe, after the paint spraying pipe stops operating for a long time, a paint spraying opening is blocked, so that later-stage paint spraying is influenced, and the paint spraying efficiency is greatly reduced.

Disclosure of Invention

The invention aims to solve the problems that stable clamping cannot be realized in the conveying process, the surface of a sheet metal cannot be dried at low cost, and the inner wall of a paint spraying pipe cannot be automatically cleaned.

In order to achieve the purpose, the invention adopts the following technical scheme:

a sheet metal part surface treatment processing device comprises a paint spraying box and sliding columns, wherein a base is installed at the bottom of the paint spraying box, supporting columns are welded on two sides of the top of the base, a gear belt is arranged between the two supporting columns, the tops of the two supporting columns are rotatably connected with first idler wheels, the inner surface wall of the gear belt is wrapped by two first idler wheels, a plurality of groups of fixing frames are welded on two sides of the outer portion of the gear belt in an equidistance mode, an air cylinder is installed on the inner side of each fixing frame, a clamping mechanism is installed at one end of the air cylinder, a paint spraying pipe is installed inside the paint spraying box, sealing covers are installed at two ends of the paint spraying pipe in a mode of penetrating through the outer surface wall of the paint spraying box, an electromagnetic coil is embedded in the sealing cover in a sliding mode, baffle plates are rotatably connected on two sides of the top of the sealing covers through torsional spring rotating shafts, an insulating cap is sleeved on one side, away from the sealing cover, and a fixing block is fixedly connected inside the paint spraying pipe, the two sides of the fixed block are respectively provided with a magnetic scraper through a first extension spring, the two sides of the outer wall of the paint spraying box are provided with a feed inlet and a discharge outlet, the top of the inner wall of the paint spraying box is provided with a hot air pipe, the vertical section of the hot air pipe is in a U-shaped structure, the two vertical ends of the hot air pipe are communicated with the feed inlet, the horizontal end of the hot air pipe is communicated with the discharge outlet, the horizontal section of the hot air pipe is in a U-shaped structure, and a heating resistance wire is arranged between the inner walls of the horizontal ends of the hot air pipe through a support;

fixture, which comprises a housin, the vertical cross-section of casing is U type structure, the traveller passes through fourth extension spring and casing horizontal end inner wall elastic connection, the welding of casing inner wall horizontal end both sides has the bracing piece, the one end of bracing piece is rotated through the pivot and is connected with push rod and first pole, the air pump is installed to the equal both sides of casing inner wall horizontal end, two the equal fixedly connected with gasbag of air pump one end, the equal sliding embedding of casing inboard vertical end exterior wall both sides has the extrusion stopper, and the second gyro wheel is installed to the one end that the casing was kept away from to the extrusion stopper.

As a further description of the above technical solution:

the top central point department of putting of spraying paint case communicates and has stored up the paint box, the top intercommunication that stores up the paint box has the booster pump, the electric cabinet is installed to one side outward appearance wall of spraying paint box near the feed inlet.

As a further description of the above technical solution:

the vertical section of the fixing frame is of an L-shaped structure, and the clamping mechanism is located between two adjacent clamping teeth on the outer surface wall of the gear belt.

As a further description of the above technical solution:

the vertical cross-section of the paint spraying pipe is of a C-shaped structure, one side, close to the gear belt, of the outer portion of the paint spraying pipe is communicated with a plurality of spray heads, the top of the paint spraying pipe is communicated with a paint storage box, and the vertical cross-section of the magnetic scraper plate is of a C-shaped structure.

As a further description of the above technical solution:

the extending end of the sliding column penetrates through the outer surface wall of the shell, and the sliding column is in clearance fit with the shell.

As a further description of the above technical solution:

one side of push rod is through third extension spring and shells inner wall elastic connection, push rod and first pole fixed connection.

As a further description of the above technical solution:

the vertical cross-section of first pole is C type structure, the outside both sides of traveller inlay and are equipped with the second pole that the first pole of cooperation used, and be electric connection between first pole and the second pole, be electric connection between first pole and the air pump.

As a further description of the above technical solution:

the two air bags are located on two sides of the vertical end of the inner cavity of the shell, limiting plates are welded at the ends, close to the air bags, of the extrusion plugs, and one sides, close to the second idler wheels, of the limiting plates are elastically connected with the inner wall of the shell through second extension springs.

In summary, due to the adoption of the technical scheme, the invention has the beneficial effects that:

1. in the invention, clamping mechanisms are arranged on two sides of a gear belt, a shell is arranged outside the clamping mechanisms, the vertical section of the shell is in a U-shaped structure, a first electric pole and a second electric pole are arranged at the horizontal end of the inner wall of the shell, an air pump and an air bag are arranged on two sides of the vertical end, the first electric pole, the second electric pole and the air pump are electrically connected, an extrusion plug is embedded in the outer wall of the inner side of the shell in a sliding manner, a second roller is arranged at one end, away from the shell, of the extrusion plug, when a sheet metal is conveyed to a conveyor belt, the clamping mechanisms on two sides clamp inwards under the action of an air cylinder, so that a sheet metal extrudes a sliding column, the first electric pole is connected with the second electric pole, the air pump starts to work, the air bag extrudes the extrusion plug after being inflated, the electric connection is realized, the clamping stability is greatly improved, the clamping effect is realized only by inwards extruding the clamping mechanisms, and the clamping efficiency and convenience are improved, the setting of second gyro wheel for when stabilizing the centre gripping, can guarantee the panel beating again and can take one-way conveying along with the gear, improved the practicality greatly.

2. According to the invention, the bottom of the inner side of the paint spraying box is provided with the hot air pipe, the vertical section of the hot air pipe is of a U-shaped structure, two ends of the hot air pipe are respectively communicated with the feed port and the discharge port, the horizontal section of the hot air pipe is also of a U-shaped structure, the heating resistance wire is arranged between the inner walls of two sides of the horizontal end through the support, and when the hot air pipe is powered on, the heating resistance wire starts to work, so that air flow which flows to the hot air pipe from the feed port is heated and then flows to the surface of a metal plate which is painted, the paint is dried, then the hot air flows out from the discharge port, energy is fully utilized, the resistance wire heating pipe and the air flow are reasonably utilized, the cost of drying the paint on the surface of the metal plate is greatly reduced, and the economical efficiency is greatly improved.

3. According to the invention, a paint spraying pipe is arranged in a paint spraying box, sealing covers are arranged at the communication positions of two ends of the paint spraying pipe and the paint spraying box, an electromagnetic coil is arranged in each sealing cover, two sides of the top of each sealing cover are rotatably connected with baffle plates through torsion spring rotating shafts, two sides of the top of the paint spraying box are elastically connected with electromagnetic scrapers through first extension springs, the vertical cross section of each electromagnetic scraper is of a C-shaped structure, and two ends of each electromagnetic scraper are attached to the inner wall of the paint spraying pipe.

Drawings

FIG. 1 is a schematic view of a processing apparatus according to the present invention;

FIG. 2 is a schematic view of a clamping structure according to the present invention;

FIG. 3 is a schematic side view of a processing apparatus according to the present invention;

FIG. 4 is a schematic top view of the heat pipe of the present invention.

Illustration of the drawings:

1. a paint spraying box; 2. a clamping mechanism; 201. a support bar; 202. an air pump; 203. an air bag; 204. a limiting plate; 205. extruding a plug; 206. a second extension spring; 207. a second roller; 208. a third extension spring; 209. a fourth tension spring; 2010. a push rod; 2011. a first electric pole; 2012. a second pole; 2013. a traveler; 2014. a housing; 3. a cylinder; 4. a fixed mount; 5. a gear belt; 6. a base; 7. a support pillar; 8. a first roller; 9. a paint storage box; 10. a booster pump; 11. a paint spray pipe; 12. a spray head; 13. a fixed block; 14. a first extension spring; 15. a magnetic scraper; 16. a baffle plate; 17. sealing the cover; 18. an electromagnetic coil; 19. an insulating cap; 20. a hot gas pipe; 21. an electric cabinet; 22. a feed inlet; 23. a discharge port; 24. heating the resistance wire.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1 and 2, a sheet metal part surface treatment processing device comprises a paint spraying box 1 and a sliding column 2013, wherein a base 6 is installed at the bottom of the paint spraying box 1, supporting columns 7 are welded on two sides of the top of the base 6, a gear belt 5 is arranged between the two supporting columns 7, first rollers 8 are rotatably connected on the tops of the two supporting columns 7, two first rollers 8 are wrapped on the inner surface wall of the gear belt 5, a plurality of groups of fixing frames 4 are equidistantly welded on two sides of the outer portion of the gear belt 5, a cylinder 3 is installed on the inner side of each fixing frame 4, a clamping mechanism 2 is installed at one end of each cylinder 3, each clamping mechanism 2 comprises a shell 2014, the vertical section of the shell 2014 is of a U-shaped structure, the sliding column 2013 is elastically connected with the inner wall of the horizontal end of the shell 2014 through a fourth extension spring 209, supporting rods 201 are welded on two sides of the horizontal end of the inner wall of the shell 2014, one end of each supporting rod 201 is rotatably connected with a push rod 2010 and a first electric pole 2011 through a rotating shaft, air pumps 202 are respectively installed on two sides of the horizontal end of the inner wall of the shell 2014, airbags 203 are respectively fixedly connected at one end of each of the two air pumps 202, extrusion plugs 205 are respectively embedded on two sides of the outer surface wall of the inner vertical end of the shell 2014 in a sliding manner, a second roller 207 is installed at one end, far away from the shell 2014, of each extrusion plug 205, the extending end of each sliding column 2013 penetrates through the outer surface wall of the shell 2014, the sliding columns 2013 and the shell 2014 are in clearance fit, one side of each push rod 2010 is elastically connected with the inner wall of the shell 2014 through a third tension spring 208, the push rod 2010 is fixedly connected with a first electric pole 2011, the vertical section of the first electric pole 2011 is in a C-shaped structure, second electric poles 2012 matched with the first electric pole 2011 are embedded on two sides of the outer portion of the sliding columns 2013, the first electric pole 2011 and the second electric pole 2012 are electrically connected, the first electric pole 2011 and the air pumps 202 are electrically connected, the two airbags 203 are positioned on two sides of the vertical end of the inner cavity of the shell 2014, a limiting plate 204 is welded at one end, the extrusion plugs 205, which is close to the airbags 203, one side of limiting plate 204 near second gyro wheel 207 passes through second extension spring 206 and casing 2014 inner wall elastic connection, the vertical cross-section of mount 4 is L type structure, fixture 2 is located between two adjacent latches of 5 outer surfaces of gear belt, the setting of multiunit mount 4, make it to have guaranteed that gear belt 5 stabilizes the centre gripping at the in-process of conveying the panel beating, the stability of centre gripping has been improved, the setting of cylinder 3, make the distance of being convenient for adjust the centre gripping, the convenience has been improved greatly, utilize gasbag 203 to carry out the centre gripping to the panel beating, the panel beating centre gripping dynamics balance has been kept on the one hand, on the other hand makes the centre gripping have certain resiliency, the panel beating has been protected greatly, the setting of second extension spring 206, when making limiting plate 204 stop the centre gripping, there is certain effect that resets, the practicality has greatly improved.

Please refer to fig. 1, fig. 3 and fig. 4, a feeding port 22 and a discharging port 23 are formed on two sides of the outer wall of the paint spraying box 1, a hot air pipe 20 is installed on the top of the inner wall of the paint spraying box 1, the vertical section of the hot air pipe 20 is of a U-shaped structure, two vertical ends of the hot air pipe 20 are communicated with the feeding port 22, the horizontal end of the hot air pipe 20 is communicated with the discharging port 23, the horizontal section of the hot air pipe 20 is of a U-shaped structure, a heating resistance wire 24 is installed between the inner walls of the horizontal ends of the hot air pipe 20 through a support, the arrangement of the U-shaped structure greatly improves the efficiency of air circulation, and improves the drying efficiency.

Please refer to fig. 1 and 3, a paint spraying pipe 11 is installed inside the paint spraying box 1, two ends of the paint spraying pipe 11 penetrate through the outer wall of the paint spraying box 1 and are provided with a sealing cover 17, an electromagnetic coil 18 is slidably embedded inside the sealing cover 17, two sides of the top of the sealing cover 17 are respectively connected with a baffle 16 through a torsional spring rotating shaft in a rotating manner, an insulating cap 19 is sleeved on one side of the electromagnetic coil 18 far away from the sealing cover 17, a fixed block 13 is fixedly connected inside the paint spraying pipe 11, magnetic scraping plates 15 are installed on two sides of the fixed block 13 through first stretching springs 14, and the sealing cover 17 is arranged so that residues of paint can be conveniently treated, the baffle 16 is arranged, when paint is prevented from being sprayed, the paint enters the electromagnetic coil 18, the later work of the electromagnetic coil 18 is influenced, and the practicability is greatly improved.

Please refer to fig. 1 and 3, the top center position department of the paint spraying box 1 is communicated with the paint storage box 9, the top of the paint storage box 9 is communicated with the booster pump 10, the electric cabinet 21 is installed on the outer surface wall of one side of the paint spraying box 1 close to the feed inlet 22, the vertical section of the paint spraying pipe 11 is of a C-type structure, one side of the outside of the paint spraying pipe 11 close to the toothed belt 5 is communicated with a plurality of spray heads 12, the top of the paint spraying pipe 11 is communicated with the paint storage box 9, the vertical section of the magnetic scraper 15 is of a C-type structure, the booster pump 10 is arranged, so that the paint spraying has certain impact force, the plurality of spray heads 12 are attractive, the paint spraying efficiency is greatly improved, the C-type structure is arranged, and the paint spraying is more comprehensive and uniform.

The working principle is as follows: when in use, a metal plate is put into the gear belt 5 in the paint spraying box 1 from the feed port 22, a plurality of clamping mechanisms 2 are equidistantly arranged on two outer sides of the gear belt 5, the clamping mechanisms 2 on two sides clamp the metal plate inwards under the action of the air cylinder 3, so that the metal plate extrudes the sliding column 2013, the bottom of the sliding column 2013 pushes the push rod 2010, and simultaneously drives the first electric pole 2011 to rotate to be electrically connected with the second electric pole 2012, the first electric pole 2011 is electrically connected with the air pump 202, the electric connection greatly ensures the stability of clamping, so that the air pump 202 inflates the air bag 203, the limiting plate 204 is further extruded, the limiting plate 204 is further arranged, the thrust of the air bag 203 is transmitted to the extrusion plug 205 in a balanced manner, the extrusion plugs 205 on two sides of the vertical end of the shell 2014 stably clamp the metal plate, the shaking caused by the vibration of a machine in the paint spraying process is prevented, the paint spraying is further uneven, and the practicability is greatly improved, the second roller 207 is installed at one end of the extrusion plug 205 far from the shell 2014, so that the sheet metal still can be driven along the 5 directions of the gear belt while keeping stability, the paint spraying pipe 11 is installed at the top of the inner side of the paint spraying box 1, paint is pushed to the paint spraying pipe 11 by the paint storage box 9 under the action of the booster pump 10 and then is sprayed out by the spray head 12, the vertical section of the paint spraying pipe 11 is of a C-shaped structure, so that the surface painting of the sheet metal is more uniform, the discharge hole 23 is formed in one side of the outer wall of the paint spraying box 1 opposite to the feed hole 22, the hot air pipe 20 is installed at the top of the inner wall of the paint spraying box 1, two ends of the hot air pipe 20 are respectively communicated with the feed hole 22 and the discharge hole 23, so that air flow enters from the hot air pipe 20, the horizontal section of the hot air pipe 20 is of a U-shaped structure, the heating resistance wire 24 is installed between the inner sides of the horizontal ends of the hot air pipe 20 through a bracket, and the heating resistance wire 24 is electrified by controlling a control switch of the electric cabinet 21, further, the air flow is heated, the rapidity is greatly improved, the hot air flowing through the heating resistance wire 24 dries the surface of the painted metal plate, then the metal plate is conveyed out from the discharge port 23 under the transmission action of the gear belt 5 and further separated from the sliding column 2013 of the clamping mechanism 2, the sliding column 2013 is reset under the action of the fourth stretching spring 209, meanwhile, the push rod 2010 is reset under the action of the third stretching spring 208, further, the first electric pole 2011 rotates around the rotating shaft, the first electric pole 2011 is separated from the second electric pole 2012, at the moment, the air pump 202 stops working, the air bag 203 naturally deflates, the automatic power-off setting is adopted, the energy is saved, the processing cost is greatly reduced, when the paint spraying box 1 stops spraying paint, the electromagnetic coil 18 is pushed, the electromagnetic coil 18 pushes the baffle 16, the baffle 16 rotates around the rotating shaft of the torsion spring, the control button of the electric cabinet 21 is controlled, the electromagnetic coil 18 is powered on, the magnetic scraping plates 15 on the two sides of the top inside of the paint spraying pipe 11 scrape paint along the inner wall of the spraying pipe 11, the efficiency of scraping lacquer is greatly improved, and behind the deenergization, magnetism scraper blade 15 resets under first extension spring 14's effect, opens closing cap 17, and the paint residue of scraping is by the pipe 11 that sprays paint and the intercommunication mouth clean up of the case 1 both sides that sprays paint, has improved the practicality greatly.

The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention should be equivalent or changed within the scope of the present invention.

Claims

1. The utility model provides a sheet metal component surface treatment processingequipment, includes spray paint case (1) and traveller (2013), its characterized in that, base (6) are installed to the bottom of spray paint case (1), support column (7) have all been welded to base (6) top both sides, two be provided with between support column (7) gear area (5), two support column (7) top all rotates and is connected with first gyro wheel (8), two first gyro wheel (8) of interior table wall cladding of gear area (5), the equidistance welding of gear area (5) outside both sides has multiunit mount (4), cylinder (3) are installed to the inboard of mount (4), fixture (2) are installed to the one end of cylinder (3), spray paint case (1) internally mounted has spray paint pipe (11), closing cap (17) are installed to the exterior wall that the both ends of spray paint pipe (11) run through spray paint case (1), electromagnetic coil (18) have been inlayed to the inside cunning of closing cap (17), closing cap (17) top both sides all rotate through the torsional spring pivot and are connected with baffle (16), insulating cap (19) have been cup jointed to one side that closing cap (17) were kept away from in electromagnetic coil (18), spray painting pipe (11) inside fixedly connected with fixed block (13), magnetic scraper blade (15) have all been installed through first extension spring (14) to fixed block (13) both sides, feed inlet (22) and discharge gate (23) have been seted up to spray painting case (1) outer wall both sides, hot-air pipe (20) are installed at the inner wall top of spray painting case (1), hot-air pipe (20) vertical cross-section is U type structure, and two vertical ends and feed inlet (22) the intercommunication of hot-air pipe (20) to hot-air pipe (20) horizontal end and discharge gate (23) intercommunication, hot-air pipe (20) horizontal cross-section is U type structure, and a heating resistance wire (24) is arranged between the inner walls of the horizontal ends of the hot air pipes (20) through a bracket;

fixture (2), including casing (2014), casing (2014) vertical cross-section is U type structure, traveller (2013) are through fourth extension spring (209) and casing (2014) horizontal end inner wall elastic connection, casing (2014) inner wall horizontal end both sides welding has bracing piece (201), the one end of bracing piece (201) is rotated through the pivot and is connected with push rod (2010) and first pole (2011), air pump (202), two are installed to the equal both sides of casing (2014) inner wall horizontal end the equal fixedly connected with gasbag (203) of air pump (202) one end, the equal sliding fit of the outer table wall both sides of the inboard vertical end of casing (2014) has extrusion stopper (205), and second gyro wheel (207) are installed to the one end that casing (2014) were kept away from in extrusion stopper (205).

2. The sheet metal part surface treatment processing device as claimed in claim 1, wherein a paint storage box (9) is communicated with a top center position of the paint spraying box (1), a booster pump (10) is communicated with a top of the paint storage box (9), and an electric cabinet (21) is installed on an outer surface wall of one side of the paint spraying box (1) close to the feed port (22).

3. The sheet metal part surface treatment machining device according to claim 1, characterized in that the vertical section of the fixing frame (4) is in an L-shaped structure, and the clamping mechanism (2) is located between two adjacent clamping teeth on the outer wall of the gear belt (5).

4. The sheet metal component surface treatment processing device of claim 1 or 2, characterized in that the vertical section of the paint spraying pipe (11) is of a C-shaped structure, one side of the outside of the paint spraying pipe (11) close to the gear belt (5) is communicated with a plurality of spray heads (12), the top of the paint spraying pipe (11) is communicated with a paint storage box (9), and the vertical section of the magnetic scraper (15) is of a C-shaped structure.

5. The sheet metal component surface treatment processing device of claim 1, wherein the extending end of the sliding column (2013) penetrates through the outer wall of the shell (2014), and the sliding column (2013) and the shell (2014) are in clearance fit.

6. The sheet metal part surface treatment machining device according to claim 1, characterized in that one side of the push rod (2010) is elastically connected with the inner wall of the shell (2014) through a third tension spring (208), and the push rod (2010) is fixedly connected with the first electric pole (2011).

7. The sheet metal part surface treatment processing device according to claim 1, wherein the vertical section of the first electric pole (2011) is of a C-shaped structure, the second electric pole (2012) matched with the first electric pole (2011) is embedded on two outer sides of the sliding column (2013), the first electric pole (2011) and the second electric pole (2012) are electrically connected, and the first electric pole (2011) and the air pump (202) are electrically connected.

8. The sheet metal part surface treatment machining device is characterized in that the two air bags (203) are positioned on two sides of the vertical end of the inner cavity of the shell (2014), a limiting plate (204) is welded at one end, close to the air bags (203), of the extrusion plug (205), and one side, close to the second roller (207), of the limiting plate (204) is elastically connected with the inner wall of the shell (2014) through a second tension spring (206).