Stainless steel fastener surface passivation treatment device

Abstract

The stainless steel fastener surface passivation treatment device comprises a base and a passivation treatment box fixedly arranged on the base, a hollowed-out basket is movably installed in the passivation treatment box, and hollowed-out holes are evenly formed in the hollowed-out basket; and a plurality of layers of hollowed-out trays for placing the stainless steel fasteners are arranged in the hollowed-out basket. Accumulation blind areas between stainless steel fasteners are broken through linkage cooperation of rotation and vibration, simultaneous passivation treatment of rotation and vibration can be achieved only through one power motor, it is ensured that the surfaces of all the stainless steel fasteners can make uniform contact with passivation liquid and fully react with the passivation liquid, the defects in the prior art are overcome, and the production efficiency is improved. The passivation quality and production efficiency of the stainless steel fastener are remarkably improved, the situation that the stainless steel fastener is prone to accumulation and cannot make full contact with passivation liquid due to the fact that a simple soaking mode is adopted in the past is avoided, and therefore the service life of the whole stainless steel fastener is prolonged, and the reliability of the whole stainless steel fastener is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of stainless steel processing, in particular to a surface passivation treatment device for stainless steel fasteners. Background Art

[0002] In the manufacturing of stainless steel fasteners, surface passivation is a key process for improving product corrosion resistance. By forming a dense oxide film on the fastener surface, it effectively blocks contact between corrosive media and the substrate, significantly extending product life. Currently, most existing passivation treatment systems utilize a simple immersion process, stacking stainless steel fasteners in a passivation tank for treatment.

[0003] However, existing passivation treatment devices cannot ensure that all fastener surfaces are evenly exposed to and react with the passivating agent when treating stainless steel fasteners. For example, some devices use a simple immersion method. In the passivation tank, due to factors such as the stacking and arrangement of the fasteners, as well as the flow of the solution, fasteners located at the bottom of the tank or in densely packed areas within the tank may not fully contact the passivating agent, resulting in incomplete formation of the passivation film or uneven thickness in these areas. This makes these areas more susceptible to corrosion in actual use, reducing the service life and reliability of the entire fastener. Therefore, the present invention provides a device for passivating the surface of stainless steel fasteners. Summary of the Invention

[0004] Based on the technical problems existing in the background technology, the present invention proposes a surface passivation treatment device for stainless steel fasteners.

[0005] The surface passivation treatment device for stainless steel fasteners proposed in the present invention comprises a base and a passivation treatment box fixedly mounted on the base, wherein a hollow basket is movably mounted in the passivation treatment box, and the hollow basket is evenly provided with hollow holes; a multi-layer hollow tray for placing stainless steel fasteners is arranged in the hollow basket, and a passivation liquid for passivating the stainless steel fasteners is also provided in the passivation treatment box;

[0006] Both sides of the passivation treatment box are movably installed with a lifting frame through a lifting mechanism, the top of the lifting frame is fixedly connected to a lifting seat, and the outer top of the hollow basket is fixedly connected to the lifting seat; a horizontal frame is provided above the hollow basket, and an electric telescopic cylinder is fixedly installed on the top of the lifting seat, and the output end of the electric telescopic cylinder is fixedly connected to the bottom side of the horizontal frame; a vibration mechanism is provided on the horizontal frame, and a vibration plate is movably installed above the horizontal frame through the vibration mechanism, and a rotating motor is fixedly installed on the vibration plate, and the output shaft of the rotating motor rotates and passes through the bottom of the vibration plate and is fixedly connected to a movable shaft, the bottom end of the movable shaft extends into the hollow basket, and the hollow tray is fixedly sleeved on the movable shaft.

[0007] As a further setting of the present invention, the vibration mechanism includes four vertical guide rods movably mounted on the horizontal frame, the top ends of the vertical guide rods are movably penetrated into the upper part of the horizontal frame in the vertical direction and are fixedly connected to the bottom side of the vibration plate; the bottom ends of the vertical guide rods are movably penetrated into the lower part of the horizontal frame in the vertical direction and are fixedly connected to end blocks; a first vibration spring sleeved on the vertical guide rod is fixedly connected between the horizontal frame and the bottom side of the vibration plate, and a second vibration spring sleeved on the vertical guide rod is fixedly connected between the horizontal frame and the end block; a turntable is fixedly sleeved on the movable shaft located under the vibration plate, a plurality of rolling seats are fixedly connected to the bottom circumferential edge of the turntable, and a vibrating ball is rollingly mounted on the bottom of the rolling seat, a fixing ring is fixedly mounted on the top of the horizontal frame, and the movable shaft movably penetrates the fixing ring, a plurality of vibration protrusions are evenly arranged in an annular shape on the top of the fixing ring, and vibration gaps are evenly arranged in annular shapes between the plurality of vibration protrusions, and the vibration balls are arranged on the vibration gaps between each vibration protrusion and vibrate along an annular trajectory.

[0008] As a further configuration of the present invention, a plurality of rolling seats are evenly arranged along an annular track on the bottom circumferential edge of the turntable.

[0009] As a further configuration of the present invention, a vertical guide hole and a movable hole are respectively provided on the horizontal frame, and the movable shaft movably passes through the movable hole; the vertical guide rod slides along the vertical direction and passes through the vertical guide hole.

[0010] As a further configuration of the present invention, the lifting mechanism includes lifting movable grooves respectively arranged on both sides of the passivation treatment box, and a lifting slider is fixedly connected to the inner bottom of the lifting frame, and the lifting slider is slidably installed in the lifting movable groove along the vertical direction; a vertically arranged screw rod is rotatably installed in the lifting movable groove, a screw rod nut is fixedly sleeved on the lifting slider, and the screw rod and the screw rod nut are threadedly connected, and a stepper motor is fixedly installed on the top inner wall of the lifting movable groove, and the output shaft of the stepper motor is fixedly connected to the top end of the screw rod.

[0011] As a further configuration of the present invention, the output shaft of the stepper motor is provided with a coupling, and the output shaft of the stepper motor is fixedly connected to the top end of the screw rod through the coupling.

[0012] As a further configuration of the present invention, a rotating seat is provided on the bottom inner wall of the lifting movable groove, and the bottom end of the screw rod is rotatably mounted on the rotating seat.

[0013] As a further configuration of the present invention, a controller is provided on the front of the passivation treatment box, and the controller is electrically controlled and connected with the electric telescopic cylinder, the rotary motor, and the stepping motor.

[0014] The beneficial effects of the present invention are:

[0015] 1. In the present invention, by providing a multi-layer hollow tray and utilizing a rotary motor to rotate, the stainless steel fasteners on the hollow tray are dispersed and arranged under the action of centrifugal force. At the same time, the stainless steel fasteners are continuously turned over, ensuring that the surfaces of all stainless steel fasteners are periodically exposed to the passivation liquid, thereby achieving uniform passivation treatment on the surfaces of the stainless steel fasteners. Compared with static accumulation, the exposure rate of the stainless steel fastener surface can be increased by more than 80%, and it is particularly suitable for the passivation treatment of stainless steel bolts, nuts and other perforated parts;

[0016] 2. In the present invention, the rotation of the rotating motor also drives the turntable, the rolling seat and the vibrating balls to rotate as a whole. When the vibrating balls rotate, they rotate along a circular trajectory on the vibrating protrusions of the fixed ring. Since a plurality of vibration gaps are provided in an annular manner between each vibrating protrusion, the vibrating balls will regularly vibrate up and down along the circular trajectory in the vibration gaps between each vibrating protrusion during rotation. The low-frequency vibration causes the stainless steel fasteners to slide slightly and spread out on the surface of the hollow tray to avoid stacking. At the same time, the vibration promotes the passivation liquid to penetrate into the gaps between the stainless steel fasteners, so that the surfaces of each stainless steel fastener are fully passivated by vibration.

[0017] 3. In the present invention, the hollow tray can realize the linkage design of up and down vibration during the rotation process, forming a "rotation + vibration" linkage composite dispersion. In this way, through the linkage coordination of rotation and vibration, the accumulation blind spots of stainless steel fasteners can be better broken, and the full surface contact of the passivation liquid and the stainless steel fasteners can be achieved, so as to avoid the accumulation of stainless steel fasteners and ensure that the surface of each stainless steel fastener can be fully exposed to the passivation liquid, thereby achieving a better passivation treatment effect.

[0018] In summary, in the present invention, the accumulation blind spots between stainless steel fasteners are eliminated by the coordinated cooperation of rotation and vibration, and only one power motor is required to achieve simultaneous passivation treatment of rotation and vibration, ensuring that the surface of each stainless steel fastener can be evenly contacted with the passivation liquid and fully react, thereby solving the defects of the prior art, significantly improving the passivation quality and production efficiency of stainless steel fasteners, and avoiding the previous simple immersion method, which easily causes the stainless steel fasteners to accumulate and cannot fully contact the passivation liquid, thereby improving the service life and reliability of the entire stainless steel fastener. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a schematic structural diagram of the surface passivation treatment device for stainless steel fasteners proposed in the present invention;

[0020] Figure 2 It is a schematic cross-sectional view of the present invention;

[0021] Figure 3 For the present invention Figure 2 A schematic diagram of the structure of the enlarged part A;

[0022] Figure 4 It is a structural schematic diagram of an enlarged local detail of the present invention;

[0023] Figure 5 It is a schematic diagram of the structure between the turntable, the rolling seat and the vibrating balls in the present invention;

[0024] Figure 6 It is a schematic diagram of the structure between the fixing ring and the vibration protrusion in the present invention.

[0025] In the figure: 1. base; 2. passivation treatment box; 201. lifting movable groove; 202. stepping motor; 203. screw; 204. lifting slider; 205. screw nut; 206. coupling; 207. rotating seat; 3. lifting frame; 4. electric telescopic cylinder; 5. horizontal frame; 501. movable hole; 502. vertical guide hole; 6. vibration plate; 7. rotating motor; 8. movable shaft; 9. hollow tray; 10. hollow basket; 11. lifting seat; 12. controller; 13. turntable; 14. rolling seat; 141. vibrating ball; 15. fixing ring; 151. vibrating protrusion; 16. vertical guide rod; 17. first vibration spring; 18. second vibration spring; 19. end block. DETAILED DESCRIPTION

[0026] The present invention will be further explained below with reference to specific embodiments.

[0027] Example

[0028] refer to Figure 1-6 In this embodiment, a surface passivation treatment device for stainless steel fasteners is proposed, comprising a base 1 and a passivation treatment box 2 fixedly arranged on the base 1, wherein a hollow basket 10 is movably installed in the passivation treatment box 2, and hollow holes are evenly arranged on the hollow basket 10; a multi-layer hollow tray 9 for placing stainless steel fasteners is provided in the hollow basket 10, and a passivation liquid for passivating the stainless steel fasteners is also provided in the passivation treatment box 2; a lifting frame 3 is movably installed on both sides of the passivation treatment box 2 through a lifting mechanism, and a lifting seat 11 is fixedly connected to the top of the lifting frame 3, and the hollow basket 10 is provided with a plurality of hollow trays 9 for placing stainless steel fasteners. The outer top is fixedly connected to the lifting seat 11; a cross frame 5 is provided above the hollow basket 10, and an electric telescopic cylinder 4 is fixedly installed on the top of the lifting seat 11, and the output end of the electric telescopic cylinder 4 is fixedly connected to the bottom side of the cross frame 5; a vibration mechanism is provided on the cross frame 5, and a vibration plate 6 is movably installed above the cross frame 5 through the vibration mechanism, and a rotating motor 7 is fixedly installed on the vibration plate 6. The output shaft of the rotating motor 7 rotates and passes through the bottom of the vibration plate 6 and is fixedly connected to a movable shaft 8. The bottom end of the movable shaft 8 extends into the hollow basket 10, and the hollow tray 9 is fixedly sleeved on the movable shaft 8.

[0029] The vibration mechanism includes four vertical guide rods 16 movably mounted on the horizontal frame 5. The top ends of the vertical guide rods 16 are movable along the vertical direction to penetrate the top of the horizontal frame 5 and are fixedly connected to the bottom side of the vibration plate 6; the bottom ends of the vertical guide rods 16 are movable along the vertical direction to penetrate the bottom of the horizontal frame 5 and are fixedly connected to the end blocks 19; a first vibration spring 17 sleeved on the vertical guide rods 16 is fixedly connected between the horizontal frame 5 and the bottom side of the vibration plate 6, and a second vibration spring 18 sleeved on the vertical guide rods 16 is fixedly connected between the horizontal frame 5 and the end blocks 19; located on the vibration plate 6 is fixedly sleeved on the movable shaft 8 below, and a plurality of rolling seats 14 are fixedly connected to the bottom circumferential edge of the turntable 13. A vibrating ball 141 is rollingly installed on the bottom of the rolling seat 14. A fixing ring 15 is fixedly installed on the top of the cross frame 5, and the movable shaft 8 movably passes through the fixing ring 15. A plurality of vibrating protrusions 151 are evenly arranged in an annular shape on the top of the fixing ring 15. Vibration gaps are evenly arranged in an annular shape between the plurality of vibrating protrusions 151, and the vibrating balls 141 vibrate along an annular trajectory in the vibration gaps between the respective vibrating protrusions 151.

[0030] Among them, multiple rolling seats 14 are evenly arranged along a circular trajectory on the bottom circumferential edge of the turntable 13; a vertical guide hole 502 and a movable hole 501 are respectively provided on the horizontal frame 5, and the movable shaft 8 is movable through the movable hole 501; the vertical guide rod 16 slides along the vertical direction and passes through the vertical guide hole 502.

[0031] The lifting mechanism includes lifting movable grooves 201 respectively arranged on both sides of the passivation treatment box 2, and a lifting slider 204 is fixedly connected to the inner bottom of the lifting frame 3, and the lifting slider 204 is slidably installed in the lifting movable groove 201 along the vertical direction; a vertically arranged screw rod 203 is rotatably installed in the lifting movable groove 201, and a screw rod nut 205 is fixedly sleeved on the lifting slider 204, and the screw rod 203 is threadedly connected to the screw rod nut 205. A stepper motor 202 is fixedly installed on the top inner wall of the lifting movable groove 201, and the output shaft of the stepper motor 202 is fixedly connected to the top of the screw rod 203.

[0032] Among them, the output shaft of the stepper motor 202 is provided with a coupling 206, and the output shaft of the stepper motor 202 is fixedly connected to the top of the screw rod 203 through the coupling 206; a rotating seat 207 is provided on the bottom inner wall of the lifting movable groove 201, and the bottom end of the screw rod 203 is rotatably installed on the rotating seat 207.

[0033] A controller 12 is provided on the front of the passivation treatment box 2 , and the controller 12 is electrically controlled and connected to the electric telescopic cylinder 4 , the rotary motor 7 , and the stepping motor 202 .

[0034] The surface passivation treatment device for stainless steel fasteners, when in use, is provided with a hollow basket 10 in the passivation treatment box 2 and a multi-layer hollow tray 9 in the hollow basket 10, the stainless steel fasteners to be passivated are placed on each hollow tray 9, and a passivation liquid is poured into the passivation treatment box 2, and the rotary motor 7 is used to rotate to drive the movable shaft 8 to rotate, and the movable shaft 8 drives the multi-layer hollow tray 9 to rotate when it rotates, so that each layer of the hollow tray 9 is driven to rotate by the movable shaft 8, and the rotary motion causes the stainless steel fasteners on the hollow tray 9 to be dispersed and arranged under the action of centrifugal force, and at the same time, the stainless steel fasteners are continuously turned over, ensuring that all surfaces of the stainless steel fasteners (such as threads and blind holes of stainless steel bolts and stainless steel nuts) are periodically in contact with the passivation liquid, thereby evenly achieving passivation treatment on the surfaces of the stainless steel fasteners; compared with static accumulation, the exposure rate of the stainless steel fastener surfaces can be increased by more than 80%, and the device is particularly suitable for passivation treatment of perforated parts such as stainless steel bolts and nuts;

[0035] As a further implementation, the rotation of the movable shaft 8 will also drive the turntable 13, the rolling seat 14 and the vibrating ball 141 to rotate as a whole. When the vibrating ball 141 rotates, it will rotate along a circular trajectory on the vibrating protrusion 151 of the fixed ring 15. Since a plurality of vibration gaps are provided in an annular manner between each vibrating protrusion 151, the vibrating ball 141 will perform regular up and down vibration operation along the annular trajectory on the vibration gaps between each vibrating protrusion 151 during rotation. At the same time, when the turntable 13 vibrates up and down, it will drive the movable shaft 8 and the stainless steel fasteners on the hollow tray 9 to vibrate up and down. The movable shaft 8 will also cause the vibration plate 6 and the vertical guide rod 16 to vibrate up and down. At the same time, the first vibration spring 17 and the second vibration spring 18 play a vibration reset role. In this way, the up and down vibration of the hollow tray 9 (amplitude 2 -5mm, frequency 20-50Hz), and the hollow tray 9 is in a grid shape (grid spacing 3-5mm). Through low-frequency vibration, the stainless steel fasteners are caused to slide slightly and spread out on the surface of the hollow tray 9 to avoid stacking. At the same time, the vibration promotes the passivation liquid to penetrate into the gaps between the stainless steel fasteners, so that the surfaces of each stainless steel fastener are fully subjected to vibration passivation treatment; and the hollow tray 9 is designed to realize up and down vibration linkage during the rotation process, forming a "rotation + vibration" linkage composite dispersion. In this way, through the linkage of rotation and vibration, the accumulation blind spots of the stainless steel fasteners can be better broken, and the passivation liquid can be in full surface contact with the stainless steel fasteners, so as to avoid the accumulation of the stainless steel fasteners and ensure that the surface of each stainless steel fastener can be fully exposed to the passivation liquid, thereby achieving a better passivation treatment effect.

[0036] In addition, the stepping motor 202 can also be used to drive the screw rod 203 to rotate forward or reverse, so that the lifting slider 204 is threaded upward or downward on the screw rod 203 through the screw nut 205. The lifting slider 204 drives the lifting frame 3, the lifting seat 11, the electric telescopic cylinder 4, the cross frame 5, the movable shaft 8, and the hollow basket 10 fixedly connected to the lifting seat 11 and the hollow tray 9 connected to the movable shaft 8 to be lifted and lowered as a whole. This makes it easy to lift and lower the height of the stainless steel fixtures on the hollow tray 9 according to the actual passivation treatment needs, so that the stainless steel fixtures can be better immersed in the passivation solution to ensure the passivation effect.

[0037] The experimental data of the passivation treatment technology of this embodiment is compared with the treatment effect of the prior art as shown in the following table:

[0038]

[0039] As can be seen from the above table, the overall technical effect of the improved present invention is significantly improved. The accumulation blind spots between stainless steel fasteners are eliminated through the coordinated cooperation of rotation and vibration, and comprehensive contact between the surface of the stainless steel fasteners and the passivation liquid is achieved, ensuring that the surfaces of all stainless steel fasteners can be evenly contacted with the passivation liquid and fully react. This solves the defects of the prior art, significantly improves the passivation quality and production efficiency of stainless steel fasteners, and avoids the previous simple immersion method, which easily causes the stainless steel fasteners to accumulate and cannot fully contact the passivation liquid, thereby improving the service life and reliability of the entire stainless steel fastener.

[0040] The above description is only a preferred specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any technician familiar with the technical field, within the technical scope disclosed by the present invention, who makes equivalent replacements or changes based on the technical solution and inventive concept of the present invention, should be covered by the scope of protection of the present invention.

Claims

1. The surface passivation treatment device for stainless steel fasteners is characterized by: The invention comprises a base (1) and a passivation treatment box (2) fixedly arranged on the base (1); a hollow basket (10) is movably installed in the passivation treatment box (2); the hollow basket (10) is evenly provided with hollow holes; a multi-layer hollow tray (9) for placing stainless steel fasteners is arranged in the hollow basket (10); and a passivation liquid for passivating the stainless steel fasteners is also arranged in the passivation treatment box (2); Both sides of the passivation treatment box (2) are movably mounted with a lifting frame (3) through a lifting mechanism, the top of the lifting frame (3) is fixedly connected to a lifting seat (11), and the outer top of the hollow basket (10) is fixedly connected to the lifting seat (11); a cross frame (5) is provided above the hollow basket (10), an electric telescopic cylinder (4) is fixedly mounted on the top of the lifting seat (11), and the output end of the electric telescopic cylinder (4) is fixedly connected to the bottom side of the cross frame (5); a vibration mechanism is provided on the cross frame (5), and a vibration plate (6) is movably mounted above the cross frame (5) through the vibration mechanism, and a rotating motor (7) is fixedly mounted on the vibration plate (6), the output shaft of the rotating motor (7) rotates and passes through the bottom of the vibration plate (6) and is fixedly connected to a movable shaft (8), the bottom end of the movable shaft (8) extends into the hollow basket (10), and the hollow tray (9) is fixedly sleeved on the movable shaft (8).

2. The surface passivation treatment device for stainless steel fasteners according to claim 1, characterized in that: The vibration mechanism comprises four vertical guide rods (16) movably mounted on the horizontal frame (5); the top ends of the vertical guide rods (16) are movable along the vertical direction to penetrate the upper side of the horizontal frame (5) and are fixedly connected to the bottom side of the vibration plate (6); the bottom ends of the vertical guide rods (16) are movable along the vertical direction to penetrate the lower side of the horizontal frame (5) and are fixedly connected to the end blocks (19); a first vibration spring (17) sleeved on the vertical guide rods (16) is fixedly connected between the horizontal frame (5) and the bottom side of the vibration plate (6); a second vibration spring (18) sleeved on the vertical guide rods (16) is fixedly connected between the horizontal frame (5) and the end blocks (19); A turntable (13) is fixedly sleeved on the movable shaft (8) below the plate (6), a plurality of rolling seats (14) are fixedly connected to the bottom circumferential edge of the turntable (13), a vibration ball (141) is rollingly installed on the bottom of the rolling seat (14), a fixed ring (15) is fixedly installed on the top of the cross frame (5), and the movable shaft (8) movably passes through the fixed ring (15), a plurality of vibration protrusions (151) are evenly arranged in an annular shape on the top of the fixed ring (15), and vibration gaps are evenly arranged in an annular shape between the plurality of vibration protrusions (151), and the vibration balls (141) are arranged in the vibration gaps between the vibration protrusions (151) and vibrate along an annular trajectory.

3. The surface passivation treatment device for stainless steel fasteners according to claim 2, characterized in that: A plurality of rolling seats (14) are evenly arranged along an annular track on the bottom circumferential edge of the rotating disk (13).

4. The surface passivation treatment device for stainless steel fasteners according to claim 2, characterized in that: The horizontal frame (5) is provided with a vertical guide hole (502) and a movable hole (501), respectively. The movable shaft (8) movably passes through the movable hole (501); and the vertical guide rod (16) slides in the vertical direction and passes through the vertical guide hole (502).

5. The surface passivation treatment device for stainless steel fasteners according to claim 1, characterized in that: The lifting mechanism comprises lifting movable grooves (201) respectively provided on both sides of the passivation treatment box (2); a lifting slider (204) is fixedly connected to the inner bottom of the lifting frame (3); the lifting slider (204) is slidably installed in the lifting movable groove (201) along the vertical direction; a vertically arranged screw rod (203) is rotatably installed in the lifting movable groove (201); a screw rod nut (205) is fixedly sleeved on the lifting slider (204); the screw rod (203) and the screw rod nut (205) are threadedly connected; a stepping motor (202) is fixedly installed on the top inner wall of the lifting movable groove (201); and the output shaft of the stepping motor (202) is fixedly connected to the top end of the screw rod (203).

6. The surface passivation treatment device for stainless steel fasteners according to claim 5, characterized in that: The output shaft of the stepper motor (202) is provided with a coupling (206), and the output shaft of the stepper motor (202) is fixedly connected to the top end of the screw rod (203) through the coupling (206).

7. The surface passivation treatment device for stainless steel fasteners according to claim 5, characterized in that: A rotating seat (207) is provided on the inner wall of the bottom side of the lifting movable groove (201), and the bottom end of the screw rod (203) is rotatably mounted on the rotating seat (207).

8. The surface passivation treatment device for stainless steel fasteners according to claim 1, characterized in that: A controller (12) is provided on the front of the passivation treatment box (2), and the controller (12) is electrically controlled and connected to the electric telescopic cylinder (4), the rotary motor (7), and the stepping motor (202).

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