A galvanized sheet passivation device

Abstract

The utility model relates to a galvanized sheet passivation device relates to the technical field of galvanized sheet processing, it includes the treatment tank that is equipped with treatment liquid, the upper slip of treatment tank is provided with the lifting frame, be provided with the lifting piece for driving lifting frame to lift in vertical direction on treatment tank, be provided with a plurality of pinions on the rotation of lifting frame, the pinion is fixedly connected with the swing bar, the swing bar penetrates lifting frame, the bottom of swing bar is provided with the clamping frame, be provided with pneumatic clamping jaw for clamping galvanized sheet on the clamping frame, be provided with the cylinder fixedly on lifting frame, the piston rod of cylinder is connected with the rack, the rack and a plurality of pinions are engaged together. The application has the effect that the reaction rate of passivation liquid and galvanized sheet is enhanced, and the phenomenon that the treatment liquid is left on the surface of galvanized sheet after passivation is reduced, and the passivation efficiency of galvanized sheet is improved.

Description

Technical Field

[0001] This utility model relates to the technical field of galvanized sheet processing, and in particular to a passivation device for galvanized sheets. Background Technology

[0002] Galvanized steel sheet refers to steel sheet with a layer of zinc on its surface. Zinc is an active metal. If zinc electroplating is not properly post-treated, the coating will quickly darken and white corrosion products will appear. In order to reduce the chemical activity of zinc, chromate solution is often used for passivation treatment. Therefore, a galvanized steel sheet passivation device is needed to passivate galvanized steel sheet.

[0003] In related technologies, when passivating galvanized sheets, most galvanized sheets are directly immersed in the treatment solution. However, the passivation solution in the passivation tank has poor fluidity, resulting in a low reaction rate between the passivation solution and the galvanized sheet, which is not conducive to improving the passivation efficiency of the galvanized sheet. After passivation, the treatment solution is easy to remain on the surface of the galvanized sheet, which is not convenient for subsequent drying of the galvanized sheet. Therefore, this needs to be improved. Utility Model Content

[0004] In order to enhance the reaction rate between the passivation solution and the galvanized sheet, reduce the phenomenon of post-passivation treatment solution residue on the surface of the galvanized sheet, and improve the passivation efficiency of the galvanized sheet, this application provides a galvanized sheet passivation device.

[0005] The passivation device for galvanized steel plates provided in this application adopts the following technical solution:

[0006] A passivation device for galvanized steel sheets includes a treatment tank containing a treatment solution, a lifting frame slidably mounted above the treatment tank, and a lifting component on the treatment tank for driving the lifting frame to move up and down in the vertical direction; a plurality of gears are rotatably mounted on the lifting frame, and a swing rod is fixedly connected to each gear, the swing rod passing through the lifting frame, and a clamping frame is mounted at the bottom end of the swing rod, the clamping frame being equipped with pneumatic grippers for clamping the galvanized steel sheet; a cylinder is fixedly mounted on the lifting frame, and a rack is connected to the piston rod of the cylinder, the rack meshing with the plurality of gears.

[0007] Preferably, two pneumatic grippers are symmetrically arranged on the clamping frame. Each pneumatic gripper is fixedly connected to a slider, which is slidably disposed on the clamping frame. The clamping frame is provided with a sliding assembly, which is used to drive the two sliders to slide towards each other or away from each other.

[0008] Preferably, the sliding assembly includes a motor, a lead screw, a first threaded section, and a second threaded section. The motor is fixedly mounted on the clamping frame, and the lead screw is connected to the drive shaft of the motor. The first threaded section and the second threaded section are symmetrically arranged on the lead screw and the threading directions are opposite. One of the sliders is threadedly connected to the first threaded section, and the other slider is threadedly connected to the second threaded section.

[0009] Preferably, the lifting component includes a set of support plates and hydraulic cylinders. The support plates are symmetrically fixed on the side wall of the processing box, and the hydraulic cylinders are disposed on the surface of the support plates. The piston rod of the hydraulic cylinders is connected to the lifting frame.

[0010] Preferably, the lifting frame includes a set of support plates and hydraulic cylinders. The support plates are symmetrically fixed on the side wall of the processing box, and the hydraulic cylinders are disposed on the surface of the support plates. The piston rod of the hydraulic cylinders is connected to the lifting frame.

[0011] Preferably, a limiting nut is threaded onto the connecting rod, and the limiting nut is located on the upper part of the lifting frame.

[0012] In summary, this application includes at least one of the following beneficial technical effects:

[0013] 1. By setting up a processing box, lifting frame, lifting component, gear, swing rod, lifting frame, clamping frame, pneumatic gripper, cylinder and rack, when the lifting component drives several galvanized sheets clamped at the bottom of the lifting frame into the processing box, the piston rod of the cylinder continuously extends and retracts, driving the rack to slide back and forth on the lifting frame. The rack abuts against the gear, driving the gear to repeatedly rotate forward and backward, which in turn drives the swing rod to swing left and right. When the swing rod drives the clamping frame to swing, it can expand the range of motion of the galvanized sheet in the processing box. When the galvanized sheet swings in the processing liquid, the processing liquid can generate a certain flow, thereby enhancing the reaction rate between the passivation liquid and the galvanized sheet.

[0014] 2. By setting up a slider, a motor, a lead screw, a first threaded section, and a second threaded section, the motor drives the lead screw to rotate. One slider slides on the first threaded section, and the other slider slides on the second threaded section. By controlling the two sliders to move towards each other or away from each other, the distance between the two pneumatic grippers can be adjusted, which is convenient for clamping galvanized sheets of different lengths and improves the applicability of the device.

[0015] 3. By setting up an abutment plate, connecting rod, vibration spring, and limit nut, after passivation, the lifting component moves upward, causing the galvanized sheet to detach from the treatment liquid. Then, the piston rod of the cylinder quickly extends and retracts, causing the swing rod to swing, which to some extent shakes off the residual treatment liquid on the surface of the galvanized sheet. When the galvanized sheet swings, the vibration spring abuts against the lifting frame, and the vibration spring can cause the lifting frame to vibrate to a certain amplitude in the vertical direction, which further facilitates the detachment of the residual treatment liquid on the surface of the galvanized sheet, reduces the phenomenon of treatment liquid remaining on the surface of the galvanized sheet after passivation, and improves the passivation efficiency of the galvanized sheet. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of a passivation device for galvanized steel sheets provided in an embodiment of this application.

[0017] Figure 2 This is a schematic diagram illustrating the sliding component in the embodiments of this application.

[0018] Explanation of reference numerals in the attached drawings: 1. Processing box; 2. Lifting frame; 21. Cylinder; 3. Lifting component; 31. Support plate; 32. Hydraulic cylinder; 4. Gear; 41. Rack; 5. Swing rod; 51. Clamping frame; 52. Pneumatic gripper; 521. Slider; 6. Sliding assembly; 61. Motor; 62. Lead screw; 63. First threaded section; 64. Second threaded section; 7. Abutment plate; 71. Connecting rod; 8. Vibration spring; 9. Limit nut. Detailed Implementation

[0019] The following is in conjunction with the appendix Figure 1-2 This application will be described in further detail.

[0020] This application discloses a passivation device for galvanized steel sheets. (Refer to...) Figure 1 The system includes a treatment tank 1 containing a treatment fluid. A lifting frame 2 is slidably mounted above the treatment tank 1, with its length aligned with the length of the treatment tank 1. A lifting component 3 is mounted on the treatment tank 1. The lifting component 3 includes a set of support plates 31 and hydraulic cylinders 32. The support plates 31 are symmetrically fixed to the side walls of the treatment tank 1. The hydraulic cylinders 32 are bolted to the surface of the support plates 31, with their length aligned vertically. The piston rod of the hydraulic cylinders 32 is connected to the lifting frame 2. By extending and retracting the piston rod of the hydraulic cylinders 32, the lifting frame 2 can be vertically raised and lowered at the top of the treatment tank 1.

[0021] Reference Figure 1 and Figure 2A number of gears 4 are rotatably mounted on the lifting frame 2, and a swing rod 5 is welded and fixedly connected to each gear 4, passing through the lifting frame 2. A clamping frame 51 is located at the bottom end of the swing rod 5, with its length direction aligned with the width direction of the processing box 1. The clamping frame 51 is equipped with pneumatic grippers 52 for clamping the galvanized sheet, and two pneumatic grippers 52 are symmetrically arranged on the clamping frame 51. During passivation treatment of the galvanized sheet, the galvanized sheet is first placed between the pneumatic grippers 52, which then clamp it. The hydraulic cylinder 32 drives the lifting frame 2 to rise and fall, bringing the lifting frame 2 closer to the processing box 1, thus drawing the galvanized sheet into the processing box 1 to contact the treatment liquid for passivation.

[0022] Reference Figure 1 A cylinder 21 is bolted to the lifting frame 2. The piston rod of the cylinder 21 is connected to a rack 41. The length of both the rack 41 and the cylinder 21 is along the length of the lifting frame 2. The rack 41 meshes with several gears 4. When the lifting component 3 moves several galvanized sheets clamped at the bottom of the lifting frame 2 into the processing box 1, the piston rod of the cylinder 21 extends and retracts continuously, causing the rack 41 to slide back and forth on the lifting frame 2. The rack 41 abuts against the gears 4, causing the gears 4 to repeatedly rotate forward and backward, which in turn causes the swing rod 5 to swing left and right. When the swing rod 5 causes the clamping frame 51 to swing, it can expand the range of motion of the galvanized sheet in the processing box 1. The swing of the galvanized sheet in the processing liquid can generate a certain flow in the processing liquid, thereby enhancing the reaction rate between the passivation liquid and the galvanized sheet.

[0023] Reference Figure 1 and Figure 2 A pneumatic gripper 52 is fixedly connected to a slider 521, which is slidably mounted on a clamping frame 51 and can slide along the length of the clamping frame 51. A sliding assembly 6 is provided on the clamping frame 51, comprising a motor 61, a lead screw 62, a first threaded section 63, and a second threaded section 64. The motor 61 is fixedly mounted on the clamping frame 51 by bolts. The lead screw 62 is connected to the drive shaft of the motor 61. The first threaded section 63 and the second threaded section 64 are symmetrically and integrally mounted on the lead screw 62 with opposite threading directions. One slider 521 is threadedly connected to the first threaded section 63, and the other slider 521 is threadedly connected to the second threaded section 64. The motor 61 drives the lead screw 62 to rotate. One slider 521 slides on the first threaded section 63, and the other slider 521 slides on the second threaded section 64. By controlling the two sliders 521 to move towards each other or away from each other, the distance between the two pneumatic grippers 52 can be adjusted, which is convenient for clamping galvanized sheets of different lengths and improves the applicability of the device.

[0024] Reference Figure 1The piston rod of the hydraulic cylinder 32 is connected to the abutment plate 7, and a connecting rod 71 is integrally provided on the abutment plate 7. The length direction of the connecting rod 71 is vertical, and the connecting rod 71 passes through the lifting frame 2. A vibration spring 8 is sleeved on the connecting rod 71. One end of the vibration spring 8 abuts against the upper surface of the abutment plate 7, and the other end of the vibration spring 8 abuts against the lower surface of the lifting frame 2. A limit nut 9 is threadedly connected to the connecting rod 71, and the limit nut 9 is located above the lifting frame 2. After passivation, the lifting component 3 is driven to rise, so that the galvanized sheet is removed from the treatment liquid. At this time, the piston rod of the cylinder 21 is rapidly extended and retracted, driving the swing rod 5 to swing, which can shake off the residual treatment liquid on the surface of the galvanized sheet to a certain extent. When the galvanized sheet swings, the vibration spring 8 abuts against the lifting frame 2, and the vibration spring 8 can make the lifting frame 2 vibrate in a certain amplitude in the vertical direction, which further facilitates the removal of the residual treatment liquid on the surface of the galvanized sheet, reduces the phenomenon of treatment liquid remaining on the surface of the galvanized sheet after passivation, and improves the passivation efficiency of the galvanized sheet.

[0025] The implementation principle of the passivation device for galvanized sheet in this application embodiment is as follows: First, the galvanized sheet is placed between pneumatic grippers 52. The pneumatic grippers 52 are used to clamp the galvanized sheet. The hydraulic cylinder 32 drives the lifting frame 2 to rise and fall, so that the lifting frame 2 is close to the treatment box 1, and the galvanized sheet is brought into the treatment box 1 to come into contact with the treatment liquid for passivation. At this time, the piston rod of the cylinder 21 continuously extends and retracts, driving the rack 41 to slide back and forth on the lifting frame 2. The rack 41 abuts against the gear 4, driving the gear 4 to repeatedly rotate forward and backward, thereby driving the swing rod 5 to swing left and right. When the swing rod 5 drives the clamping frame 51 to swing, it can expand the range of motion of the galvanized sheet in the treatment box 1. When the galvanized sheet swings in the treatment liquid, the treatment liquid can generate a certain flow, thereby enhancing the reaction rate between the passivation liquid and the galvanized sheet. After passivation, the lifting component 3 is raised to remove the galvanized sheet from the treatment liquid. At this time, the piston rod of the cylinder 21 extends and retracts rapidly, causing the swing rod 5 to swing, which can shake off the residual treatment liquid on the surface of the galvanized sheet to a certain extent. When the galvanized sheet swings, the vibration spring 8 abuts against the lifting frame 2. The vibration spring 8 can make the lifting frame 2 vibrate in the vertical direction to a certain amplitude, which further facilitates the removal of the residual treatment liquid on the surface of the galvanized sheet, reduces the phenomenon of treatment liquid remaining on the surface of the galvanized sheet after passivation, improves the passivation efficiency of the galvanized sheet, and the device has a simple structure, low manufacturing cost, and high applicability.

[0026] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A passivation device for galvanized steel sheets, comprising a treatment tank (1) containing a treatment solution, characterized in that: A lifting frame (2) is slidably mounted above the processing box (1). A lifting component (3) is mounted on the processing box (1) to drive the lifting frame (2) to move up and down in the vertical direction. Several gears (4) are rotatably mounted on the lifting frame (2). A swing rod (5) is fixedly connected to the gear (4). The swing rod (5) passes through the lifting frame (2). A clamping frame (51) is mounted at the bottom end of the swing rod (5). A pneumatic gripper (52) for clamping the galvanized sheet is mounted on the clamping frame (51). A cylinder (21) is fixedly mounted on the lifting frame (2). A rack (41) is connected to the piston rod of the cylinder (21). The rack (41) meshes with several gears (4).

2. The passivation device for galvanized steel sheet according to claim 1, characterized in that: Two pneumatic grippers (52) are symmetrically arranged on the clamping frame (51). Each pneumatic gripper (52) is fixedly connected to a slider (521). The slider (521) is slidably arranged on the clamping frame (51). The clamping frame (51) is provided with a sliding assembly (6). The sliding assembly (6) is used to drive the two sliders (521) to slide towards each other or away from each other.

3. The passivation device for galvanized steel sheet according to claim 2, characterized in that: The sliding assembly (6) includes a motor (61), a lead screw (62), a first threaded section (63), and a second threaded section (64). The motor (61) is fixedly mounted on the clamping frame (51). The lead screw (62) is connected to the drive shaft of the motor (61). The first threaded section (63) and the second threaded section (64) are symmetrically arranged on the lead screw (62) and the threading directions are opposite. One slider (521) is threadedly connected to the first threaded section (63), and the other slider (521) is threadedly connected to the second threaded section (64).

4. The passivation device for galvanized steel sheet according to claim 1, characterized in that: The lifting component (3) includes a set of support plates (31) and a hydraulic cylinder (32). The support plates (31) are symmetrically fixed on the side wall of the processing box (1). The hydraulic cylinder (32) is disposed on the surface of the support plates (31). The piston rod of the hydraulic cylinder (32) is connected to the lifting frame (2).

5. The passivation device for galvanized steel sheet according to claim 4, characterized in that: The piston rod of the oil cylinder (32) is connected to the abutment plate (7), and the abutment plate (7) is integrally provided with a connecting rod (71). The connecting rod (71) passes through the lifting frame (2), and a vibration spring (8) is sleeved on the connecting rod (71). One end of the vibration spring (8) abuts against the upper surface of the abutment plate (7), and the other end of the vibration spring (8) abuts against the lower surface of the lifting frame (2).

6. The passivation device for galvanized steel sheet according to claim 5, characterized in that: A limiting nut (9) is threaded onto the connecting rod (71), and the limiting nut (9) is located above the lifting frame (2).

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