A passivation device for lightweight and high-strength metal parts

Abstract

The present invention relates to the technical field of passivation of galvanized sheets, and discloses a passivation device for lightweight high-strength metal parts, including a passivation box, a partition plate is fixedly installed at the middle position inside the passivation box, and fixed plates are symmetrically installed on the front and rear sides of the passivation box, a support plate is fixedly installed on the upper end of the fixed plate, and a first motor is fixedly installed on the upper end of the support plate. The passivation device for lightweight high-strength metal parts can simultaneously drive the right rack plate and the left rack plate to move by rotating the rotating gear. When one group of galvanized sheets is passivated, another group of galvanized sheets can be surface treated and removed and replaced with new galvanized sheets, so as to achieve the purpose of continuous passivation of the galvanized sheets, and the passivation liquid remaining on the surface of the galvanized sheets can be adsorbed by the fitting rotation of the adsorption extrusion roller, and the connection airbag can be squeezed by the movement of the moving plate, so that the passivation liquid on the side is moved to the middle as much as possible, so as to facilitate the subsequent sufficient extrusion and adsorption by the adsorption extrusion roller.

Description

Technical Field

[0001] The invention relates to the technical field of galvanized sheet passivation, in particular to a passivation device for lightweight and high-strength metal parts. Background Art

[0002] Galvanized sheet is a steel sheet that has been galvanized on the surface. It is a lightweight and high-strength metal part. Galvanizing on the surface of the steel sheet can effectively prevent rust. In order to further prevent rust and improve the corrosion resistance and service life of the galvanized sheet, the galvanized sheet usually needs to be passivated. Galvanized sheet passivation refers to the process of using a passivating agent (such as chromate solution) to treat the surface of the galvanized sheet to form a protective film that is not easily oxidized. This protective film can slow down the corrosion rate of the metal, thereby preventing rust and extending the storage time.

[0003] At present, the patent with announcement number CN115466948A discloses a passivation device for continuous galvanized sheet processing, including symmetrically distributed guide rails, the top outer walls of the two guide rails are each provided with a mounting frame, and the outer wall of one side of the mounting frame is provided with an anti-skid mechanism, the anti-skid mechanism includes a spring connected to the outer wall of one side of the mounting frame, a mounting sleeve connected to the outer wall of one end of the spring, a first hydraulic cylinder fixedly connected to the inner wall of the mounting sleeve, and an anti-skid plate fixedly connected to the piston rod of the first hydraulic cylinder; a blowing mechanism is provided at the bottom of the guide rail, and the blowing mechanism includes a mounting frame arranged at the bottom of the guide rail, a first servo motor fixedly connected to the outer wall of one side of the mounting frame by bolts, a lead screw connected to the output shaft of the first servo motor by a coupling, a slider screwed on the outer wall of the lead screw, and a fan welded to the outer wall of the bottom of the slider. When the second servo motor stops rotating, the piston rod of the first hydraulic cylinder extends outward, so that the anti-skid plate is squeezed on the inner wall of the guide rail, preventing the first pulley from moving forward, thereby improving the stability of the device; when the fan is turned on, the first servo motor drives the screw rod to rotate, so that the fan can move horizontally, ensuring that the passivation liquid on each galvanized sheet body can quickly fall into the passivation tank, which not only improves work efficiency but also avoids waste of passivation liquid.

[0004] However, the following problems still exist during the use of the current passivation device:

[0005] The above-mentioned device adopts a mobile manner to passivate the galvanized sheet when in use, and only uses one workstation, so the purpose of continuous passivation cannot be achieved. That is, the device needs to be stopped after the passivation of the previous group of galvanized sheets, the passivated galvanized sheets are removed, and new galvanized sheets are hung. In this process, the processing speed is affected, and after processing, it is difficult to quickly clean the passivation liquid attached to the surface of the galvanized sheet by only blowing from the upper end through the fan blades, and liquid stains are prone to remain. Summary of the invention

[0006] In view of the shortcomings of the prior art, the present invention provides a passivation equipment for lightweight and high-strength metal parts. By operating two workstations simultaneously, a new group of galvanized sheets can be hung during the passivation of the previous group of galvanized sheets to achieve continuous passivation. The passivation liquid on the surface of the galvanized sheet can be cleaned by surface bonding, extrusion and adsorption to avoid residue.

[0007] The present invention provides the following technical solution: a passivation device for lightweight high-strength metal parts, comprising a passivation box, a partition plate is fixedly installed at the middle position of the interior of the passivation box, and fixed plates are symmetrically installed on the front and rear sides of the passivation box, a support plate is fixedly installed on the upper end of the fixed plate, a first motor is fixedly installed on the upper end of the support plate, and a connecting shaft is fixedly installed on the output end of the first motor, two rotating gears are fixedly installed on the connecting shaft, and the left sides of the two rotating gears are meshed and connected with a left rack plate, and the right sides of the two rotating gears are meshed and connected with a right rack plate, and the lower ends of the right rack plate and the left rack plate are respectively fixedly installed with extension plates, a hanging hook is fixedly installed at the lower end of the extension plate, and a galvanized sheet body is hung on the hanging hook, a connecting rod is slidably arranged on the extension plate, and a driving plate is fixedly installed at the lower end of the connecting rod, a first slide plate and a second slide plate are slidably arranged on the driving plate, and adsorption extrusion rollers are rotatably arranged on the first slide plate and the second slide plate, a first electric telescopic rod and a second electric telescopic rod are fixedly installed on the driving plate, and the first electric telescopic rod is fixedly installed with the second slide plate, and the second electric telescopic rod is fixedly installed with the first slide plate.

[0008] Furthermore, the right rack plate and the left rack plate are symmetrically provided with two sets of gear tooth structures, and the two sets of gear tooth structures provided on the right rack plate and the left rack plate are respectively meshed with the two rotating gears. Through the above structure, it is convenient to drive the right rack plate and the left rack plate to move up and down through the rotation of the rotating gear.

[0009] Furthermore, connecting slide blocks are symmetrically installed at the lower ends of the right rack plate and the left rack plate, and a penetrating sliding groove is opened in the middle position of the connecting slide block. A guide slide bar is fixedly installed on the support plate, and the connecting slide block is slidably connected to the guide slide bar through the sliding groove. Through the above structure, the right rack plate and the left rack plate can be supported and limited under the action of the guide slide bar and the connecting slide block.

[0010] Furthermore, a second motor is fixedly installed at the middle position of the upper end of the extension plate, and an adjusting screw is fixedly installed at the output end of the second motor through a coupling, a movable plate is fixedly installed at the upper end of the connecting rod, and a first threaded hole is opened in the middle position of the movable plate, and the adjusting screw is connected to the movable plate through the threaded hole opened on the movable plate. Through the above structure, the adjusting screw can be driven to rotate by the operation of the second motor, thereby causing the movable plate to move up and down.

[0011] Furthermore, bearings are fixedly installed at the middle position of the first slide and the second slide, and a rotating shaft is installed on the adsorption and squeezing roller, and the rotating shaft installed on the adsorption and squeezing roller forms a rotating mechanism with the first slide and the second slide through the rotating shaft, and a third motor is fixedly installed on the first slide, and the output end of the third motor is interconnected with the rotating shaft installed on the adsorption and squeezing roller through a coupling. Through the above structure, it is convenient to support the adsorption and squeezing roller without affecting the rotation of the adsorption and squeezing roller.

[0012] Furthermore, three groups of adsorption and squeezing rollers are arranged at equal distances on the driving plate, and each group of adsorption and squeezing rollers is composed of two roller members, and an outer layer of sponge material is arranged on the outside of the adsorption and squeezing roller. Through the above structure, the passivation liquid remaining on the surface of the galvanized sheet can be adsorbed under the action of the adsorption and squeezing roller, thereby avoiding the occurrence of passivation liquid residue.

[0013] Furthermore, a driving gear is fixedly mounted on the rotating shaft of each roller member constituting the adsorption and extrusion roller, and six driving gears are arranged on the driving plate. Through the above structure, the six adsorption and extrusion rollers can be driven to rotate under the action of the driving gear.

[0014] Furthermore, two connecting airbags are symmetrically installed on the lower surface of the movable plate, and the lower ends of the two connecting airbags are fixedly installed on the upper surface of the extension plate, an air guide tube is installed through the connecting airbag, and the air guide tube slides through the extension plate, an injection pipe is fixedly installed on the lower end of the air guide tube, and the injection pipe is fixedly installed on the driving plate, a one-way air valve is installed through the movable plate, and the one-way air valve is installed through the upper end of the connecting airbag. Through the above structure, it is convenient to squeeze the connecting airbag through the movement of the movable plate, so as to spray the air onto the galvanized plate through the injection pipe, so that the passivation liquid on the galvanized plate is gathered in the middle position as much as possible, which is convenient for it to flow down and be collected for reuse.

[0015] Furthermore, a receiving plate is fixedly installed on the fixed plate, and a driving motor is arranged on the receiving plate, and the output end of the driving motor is connected to the driving screw through a coupling, the driving screw and the receiving plate are rotationally connected, and a movable support plate is slidably arranged on the upper end of the receiving plate, a second threaded hole is opened in the middle position of the movable support plate, and the movable support plate is connected to the driving screw through the second threaded hole, and a driving blade and a heating device are arranged on the movable support plate. Through the above structure, the driving blade and the heating device can heat and dry the surface of the galvanized sheet, thereby increasing the effect of the passivation liquid adhering to the surface of the galvanized sheet.

[0016] Compared with the prior art, the present invention has the following beneficial effects:

[0017] The passivation equipment for lightweight high-strength metal parts can simultaneously drive the right rack plate and the left rack plate to move up and down through the rotation of the rotating gear, so that when one group of galvanized plates is passivated, another group of galvanized plates can be surface treated and replaced with new galvanized plates after being removed, so as to achieve the purpose of continuous passivation of the galvanized plates, and the passivation liquid remaining on the surface of the galvanized plates can be adsorbed through the fitting rotation of the adsorption and extrusion rollers, so that it flows into the passivation box through extrusion, so as to achieve the purpose of recycling the passivation liquid, and the movement of the moving plate can realize the extrusion of the connecting airbag, so that the passivation liquid on the side is moved to the middle as much as possible, so as to facilitate the subsequent full extrusion and adsorption by the adsorption and extrusion rollers, and finally, the passivated galvanized plates can be dried with hot air by driving the fan blades and the heating device, and hot air drying can ensure that the passivation film is evenly dried, avoiding the problems of uneven color and lighter color that may be caused by natural drying. The passivation film obtained by hot air drying has a brighter and more uniform appearance, which improves the overall aesthetics of the product. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the overall three-dimensional structure of the present invention;

[0019] Figure 2 It is a schematic diagram of the three-dimensional cross-sectional structure of the partition plate of the present invention;

[0020] Figure 3 This is a schematic diagram of the three-dimensional structure of the support plate of the present invention;

[0021] Figure 4 This is a schematic diagram of the three-dimensional structure of the driving fan blade of the present invention;

[0022] Figure 5 This is a schematic diagram of the three-dimensional structure of the airbag connection of the present invention;

[0023] Figure 6 This is a schematic diagram of the three-dimensional structure of the driving plate of the present invention;

[0024] Figure 7 For the present invention Figure 6 The enlarged structural diagram at A in the middle;

[0025] Figure 8 This is a schematic diagram of the three-dimensional structure of the adsorption and squeezing roller of the present invention;

[0026] Fig. 9 It is a schematic diagram of the three-dimensional cross-sectional structure of the second skateboard of the present invention.

[0027] In the figure: 1. passivation box; 2. partition plate; 3. fixed plate; 4. support plate; 5. first motor; 6. rotating gear; 7. right rack plate; 8. left rack plate; 9. connecting shaft; 10. extension plate; 11. connecting slider; 12. guide slide rod; 13. hanging hook; 14. galvanized sheet body; 15. second motor; 16. adjusting screw; 17. moving plate; 18. connecting rod; 19. driving gear; 20. driving plate; 21. first slide plate; 22. third motor; 23. adsorption extrusion roller; 24. second slide plate; 25. first electric telescopic rod; 26. second electric telescopic rod; 27. jet pipe; 28. air guide pipe; 29. ​​connecting airbag; 30. one-way air valve; 31. receiving plate; 32. driving motor; 33. driving screw; 34. moving support plate; 35. driving fan blade; 36. heating device. DETAILED DESCRIPTION

[0028] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0029] See also Figure 1-Figure 9 The present invention provides a technical solution: a passivation device for lightweight high-strength metal parts, comprising a passivation box 1, a partition plate 2 is fixedly installed at the middle position inside the passivation box 1, and a fixed plate 3 is symmetrically installed on the front and rear sides of the passivation box 1, a support plate 4 is fixedly installed on the upper end of the fixed plate 3, a first motor 5 is fixedly installed on the upper end of the support plate 4, and a connecting shaft 9 is fixedly installed on the output end of the first motor 5, two rotating gears 6 are fixedly installed on the connecting shaft 9, and the left sides of the two rotating gears 6 are meshed with a left rack plate 8, and the right sides of the two rotating gears 6 are meshed with a right rack plate 7, and the right rack plate 7 is meshed with the lower end of the left rack plate 8. An extension plate 10 is fixedly installed at the position, a hanging hook 13 is fixedly installed at the lower end of the extension plate 10, and a galvanized sheet body 14 is hung on the hanging hook 13, two sets of gear tooth structures are symmetrically arranged on the right rack plate 7 and the left rack plate 8, and the two sets of gear tooth structures arranged on the right rack plate 7 and the left rack plate 8 are respectively meshed with the two rotating gears 6, a connecting slider 11 is symmetrically installed at the lower end of the right rack plate 7 and the left rack plate 8, and a penetrating sliding groove is opened in the middle position of the connecting slider 11, a guide slide rod 12 is fixedly installed on the support plate 4, and the connecting slider 11 is slidably connected with the guide slide rod 12 through the sliding groove.

[0030] When the galvanized sheet body 14 needs to be passivated, the passivation liquid is added into the passivation box 1, and then the galvanized sheet body 14 is hung on the hanging hook 13, and then the first motor 5 starts to work. Because the output end of the first motor 5 is connected to the connecting shaft 9, and the connecting shaft 9 is fixedly mounted with a rotating gear 6, the rotating gear 6 starts to rotate counterclockwise. Because the left side of the rotating gear 6 is meshed with a left rack plate 8, and the left rack plate 8 is mounted with a connecting slider 11, the connecting slider 11 starts to slide under the guidance of the guide slide rod 12, that is, The left rack plate 8 starts to drive the extension plate 10 installed at its lower end to move downward. At this time, the hanging hook 13 installed at the lower end of the extension plate 10 also starts to move downward until the left galvanized sheet body 14 is completely immersed in the passivation solution. At this time, the passivation process of the galvanized sheet begins. At the same time, because the right side of the rotating gear 6 is engaged with the right rack plate 7, the right rack plate 7 starts to move upward, that is, the extension plate 10 installed at the lower end of the right rack plate 7 starts to move upward, that is, the galvanized sheet body 14 on the right side that has completed passivation starts to move upward until it is completely exposed from the passivation box 1.

[0031] A connecting rod 18 is slidably provided on the extension plate 10, and a driving plate 20 is fixedly installed at the lower end of the connecting rod 18, a first slide plate 21 and a second slide plate 24 are slidably provided on the driving plate 20, and an adsorption extrusion roller 23 is rotatably provided on the first slide plate 21 and the second slide plate 24, a first electric telescopic rod 25 and a second electric telescopic rod 26 are fixedly installed on the driving plate 20, and the first electric telescopic rod 25 is fixedly installed with the second slide plate 24, and the second electric telescopic rod 26 is fixedly installed with the first slide plate 21, a second motor 15 is fixedly installed at the middle position of the upper end of the extension plate 10, and an adjusting screw 16 is fixedly installed at the output end of the second motor 15 through a coupling, a moving plate 17 is fixedly installed at the upper end of the connecting rod 18, and a first threaded hole is opened in the middle position of the moving plate 17, and the adjusting screw 16 is adjusted through the moving plate 1 The threaded holes opened on 7 are connected to the movable plate 17, bearings are fixedly installed at the middle positions of the first slide plate 21 and the second slide plate 24, and a rotating shaft is installed on the adsorption and extrusion roller 23, and the rotating shaft installed on the adsorption and extrusion roller 23 forms a rotating mechanism with the first slide plate 21 and the second slide plate 24 through the rotating shaft, a third motor 22 is fixedly installed on the first slide plate 21, and the output end of the third motor 22 is connected to the rotating shaft installed on the adsorption and extrusion roller 23 through a coupling, three groups of adsorption and extrusion rollers 23 are equidistantly arranged on the driving plate 20, and each group of adsorption and extrusion rollers 23 is composed of two roller members, and the outer skin layer of sponge material is arranged on the outside of the adsorption and extrusion roller 23, and a driving gear 19 is fixedly installed on the rotating shaft of each roller member constituting the adsorption and extrusion roller 23, and six driving gears 19 are arranged on the driving plate 20.

[0032] As the passivated galvanized sheet body 14 on the right is exposed from the passivation box 1, the second motor 15 starts to work. Because the output end of the second motor 15 is connected to the adjusting screw 16, the adjusting screw 16 starts to rotate. Because the adjusting screw 16 is threadedly connected to the movable plate 17, as the adjusting screw 16 rotates, the movable plate 17 starts to move downward. Because the lower end of the movable plate 17 is equipped with a connecting rod 18, and the lower end of the connecting rod 18 is fixedly equipped with a driving plate 20, the driving plate 20 starts to move downward until the adsorption and extrusion roller 23 moves to the uppermost position of the galvanized sheet body 14, and then the first electric telescopic rod 25 and the second electric telescopic rod 26 start to work and extend. At this time, the first slide plate 21 and the second slide plate 24 start to move (the first slide plate 21 and the second slide plate 24 are provided with three groups in total, and each group is provided with two square plate structures. As the first electric telescopic rod 25 and the second electric telescopic rod 26 work, the two square plate structures of each group start to move in a direction close to each other), and the driving gear 19 also starts to move two by two. The three groups of drive gears 19 are meshed with each other, and then the third motor 22 starts to work. At this time, the three groups of adsorption and extrusion rollers 23 start to rotate, and the two rollers of each group of adsorption and extrusion rollers 23 rotate in opposite directions, that is, the adsorption and extrusion rollers 23 start to be pressed and fitted with the outer surface of the galvanized sheet body 14. As the driving plate 20 moves downward, the adsorption and extrusion rollers 23 also move downward while rotating. At this time, the passivation liquid remaining on the surface of the galvanized sheet body 14 can be adsorbed, and then the passivation liquid remaining on the surface of the galvanized sheet body 14 can be adsorbed by the galvanized sheet body 14. The squeezing effect between the bodies 14 can squeeze out the adsorbed residual liquid, that is, the residual passivation liquid flows into the passivation box 1 again. Under the action of the partition plate 2 in the passivation box 1, the amount of passivation liquid on the left and right sides of the passivation box 1 can be ensured to be the same, that is, the passivation effect is guaranteed, and by adding the partition plate 2, the splash of the passivation liquid dripping on the right side can be avoided from affecting the passivation liquid on the left side. By recycling the excess passivation liquid, the processing cost can be reduced and the overall performance of the galvanized sheet, such as corrosion resistance and wear resistance, can be effectively avoided from being affected by excessive residual liquid.

[0033] Two connecting air bags 29 are symmetrically installed on the lower surface of the moving plate 17, and the lower ends of the two connecting air bags 29 are fixedly installed on the upper surface of the extension plate 10. An air guide tube 28 is installed through the connecting air bag 29, and the air guide tube 28 slides through the extension plate 10. An air jet tube 27 is fixedly installed at the lower end of the air guide tube 28, and the air jet tube 27 is fixedly installed on the driving plate 20. A one-way air valve 30 is installed through the moving plate 17, and the one-way air valve 30 is installed through the upper end of the connecting air bag 29. The fixed plate 3 is fixed A receiving plate 31 is fixedly installed, and a driving motor 32 is arranged on the receiving plate 31, and the output end of the driving motor 32 is connected to the driving screw 33 through a coupling, and the driving screw 33 is rotationally connected with the receiving plate 31, and a movable support plate 34 is slidingly arranged on the upper end of the receiving plate 31, a second threaded hole is opened in the middle position of the movable support plate 34, and the movable support plate 34 is connected to the driving screw 33 through the second threaded hole, and a driving fan blade 35 and a heating device 36 are arranged on the movable support plate 34.

[0034] As the moving plate 17 moves downward, the moving plate 17 begins to squeeze the connecting airbag 29. At this time, the gas in the connecting airbag 29 enters the air guide pipe 28 through the jet pipe 27 and is ejected. At this time, the gas ejected through the air guide pipe 28 can blow and collect the passivation liquid remaining on the surface of the galvanized sheet body 14 to a certain extent, so that the passivation liquid is more gathered in the middle position of the galvanized sheet body 14. With the accumulation of the passivation liquid, part of the passivation liquid will directly drip into the passivation box 1, and then the driving fan blade 35 and the heating device 36 will start to work, driving the fan 1. The blades 35 are driven to rotate by the driving motor, and the heating device 36 starts to generate heat, thereby blowing out hot air. At the same time, the driving motor 32 starts to work, because the output end of the driving motor 32 is equipped with a driving screw 33. At this time, the driving screw 33 starts to drive the movable support plate 34 to move left and right, so that the drying position can be moved to ensure the drying effect of the galvanized sheet body 14. Through the drying method, the passivation film can be ensured to be evenly dried, avoiding problems such as uneven color and lighter color that may be caused by natural drying, and through the heat Blow drying can more effectively remove free moisture on the surface of the passivation film, prevent moisture from dissolving or destroying the film layer, thereby enhancing the corrosion resistance of the passivation film and making the passivation effect on the galvanized sheet better. After the drying is completed, the first electric telescopic rod 25 and the second electric telescopic rod 26 start to work and shrink, and the adsorption and extrusion roller 23 is no longer in contact with the galvanized sheet body 14, and then the second motor 15 drives the adjusting screw 16 to rotate again, and the rotation direction is opposite to the above, that is, the moving plate 17 starts to move upward, that is, the connecting airbag 29 starts to be stretched, and the external gas The gas will enter the connecting airbag 29 through the one-way air valve 30 (the one-way air valve 30 is set as a valve for one-way gas passage, that is, the gas can only enter the connecting airbag 29 through the one-way air valve 30, and cannot be discharged through the one-way air valve 30), and then the treated galvanized sheet body 14 can be removed, and then a new galvanized sheet body 14 can be hung, so that the first motor 5 drives the rotating gear 6 to rotate clockwise, and at this time the right rack plate 7 starts to move downward, and the left rack plate 8 starts to move upward, so that the galvanized sheet body 14 can be continuously passivated.

[0035] Although 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 the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A passivation device for lightweight high-strength metal parts, comprising a passivation box (1), a partition plate (2) fixedly installed in the middle position of the passivation box, and fixed plates (3) symmetrically installed on the front and rear sides of the passivation box (1), characterized in that: Also includes: A support plate (4) is fixedly mounted on the upper end of the fixed plate (3), a first motor (5) is fixedly mounted on the upper end of the support plate (4), and a connecting shaft (9) is fixedly mounted on the output end of the first motor (5), two rotating gears (6) are fixedly mounted on the connecting shaft (9), and the left sides of the two rotating gears (6) are meshedly connected with a left rack plate (8), and the right sides of the two rotating gears (6) are meshedly connected with a right rack plate (7), and the lower ends of the right rack plate (7) and the left rack plate (8) are respectively fixedly mounted with extension plates (10), and the lower ends of the extension plates (10) are fixedly mounted with a hanging hook (13), and the upper ends of the hanging hook (13) are A galvanized sheet body (14) is suspended thereon, a connecting rod (18) is slidably provided on the extension plate (10), and a driving plate (20) is fixedly installed at the lower end of the connecting rod (18), a first slide plate (21) and a second slide plate (24) are slidably provided on the driving plate (20), and adsorption and squeezing rollers (23) are rotatably provided on the first slide plate (21) and the second slide plate (24), a first electric telescopic rod (25) and a second electric telescopic rod (26) are fixedly installed on the driving plate (20), and the first electric telescopic rod (25) and the second slide plate (24) are fixedly installed, and the second electric telescopic rod (26) and the first slide plate (21) are fixedly installed.

2. A passivation device for lightweight high-strength metal parts according to claim 1, characterized in that: The right rack plate (7) and the left rack plate (8) are both symmetrically provided with two sets of gear tooth structures, and the two sets of gear tooth structures provided on the right rack plate (7) and the left rack plate (8) are respectively meshedly connected with the two rotating gears (6).

3. A passivation device for lightweight high-strength metal parts according to claim 1, characterized in that: The lower ends of the right rack plate (7) and the left rack plate (8) are symmetrically mounted with connecting slide blocks (11), and a penetrating sliding groove is provided in the middle of the connecting slide block (11). A guide slide bar (12) is fixedly mounted on the support plate (4), and the connecting slide block (11) is slidably connected to the guide slide bar (12) via the sliding groove.

4. The passivation device for lightweight high-strength metal parts according to claim 1, characterized in that: A second motor (15) is fixedly mounted at the middle position of the upper end of the extension plate (10), and an adjusting screw (16) is fixedly mounted at the output end of the second motor (15) via a coupling; a moving plate (17) is fixedly mounted at the upper end of the connecting rod (18), and a first threaded hole is provided at the middle position of the moving plate (17), and the adjusting screw (16) is connected to the moving plate (17) via the threaded hole provided on the moving plate (17).

5. The passivation device for lightweight high-strength metal parts according to claim 1, characterized in that: A bearing is fixedly mounted at the middle position of the first slide plate (21) and the second slide plate (24), and a rotating shaft is mounted on the adsorption and extrusion roller (23). The rotating shaft mounted on the adsorption and extrusion roller (23) forms a rotating mechanism with the first slide plate (21) and the second slide plate (24) through the rotating shaft. A third motor (22) is fixedly mounted on the first slide plate (21), and an output end of the third motor (22) is connected to the rotating shaft mounted on the adsorption and extrusion roller (23) through a coupling.

6. The passivation device for lightweight high-strength metal parts according to claim 1, characterized in that: Three groups of adsorption and squeezing rollers (23) are arranged at equal distances on the driving plate (20), and each group of adsorption and squeezing rollers (23) is composed of two roller parts, and an outer skin layer of sponge material is arranged outside the adsorption and squeezing rollers (23).

7. The passivation device for lightweight high-strength metal parts according to claim 1, characterized in that: A driving gear (19) is fixedly mounted on the rotating shaft of each roller member constituting the adsorption and squeezing roller (23), and six driving gears (19) are arranged on the driving plate (20).

8. The passivation device for lightweight high-strength metal parts according to claim 4, characterized in that: Two connecting air bags (29) are symmetrically mounted on the lower surface of the movable plate (17), and the lower ends of the two connecting air bags (29) are fixedly mounted on the upper surface of the extension plate (10); an air guide tube (28) is installed through the connecting air bag (29), and the air guide tube (28) slides through the extension plate (10); an air jet tube (27) is fixedly mounted on the lower end of the air guide tube (28), and the air jet tube (27) is fixedly mounted on the driving plate (20); a one-way air valve (30) is installed through the movable plate (17), and the one-way air valve (30) is installed through the upper end of the connecting air bag (29).

9. The passivation device for lightweight high-strength metal parts according to claim 1, characterized in that: A receiving plate (31) is fixedly mounted on the fixed plate (3), and a driving motor (32) is arranged on the receiving plate (31), and the output end of the driving motor (32) is connected to a driving screw (33) via a coupling, the driving screw (33) and the receiving plate (31) are rotationally connected, and a movable support plate (34) is slidably arranged on the upper end of the receiving plate (31), a second threaded hole is opened in the middle position of the movable support plate (34), and the movable support plate (34) is connected to the driving screw (33) via the second threaded hole, and a driving fan blade (35) and a heating device (36) are arranged on the movable support plate (34).

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