A passivation device for galvanized sheet production

Abstract

The utility model relates to a passivation device for galvanized sheet production, including the liquid storage tank for storing the purified liquid to the support frame of installation outside the liquid storage tank, be provided with the alternate assembly on the support frame, the alternate assembly includes two guide rails, and the toothed plate of sliding connection in two guide rails inside respectively, two the guide rails are vertically installed in the top of support frame, and two toothed plates all are through the top of support frame, the same gear is engaged between two toothed plates, be provided with the motor of output end and gear transmission connection on the support frame. The passivation device for galvanized sheet production, through the reverse movement design of alternate assembly, the galvanized sheet of left and right sides can synchronous clamping and passivation and lifting and drying operation, need not wait for single group to complete whole process, compared with traditional single group passivation device, the processing efficiency is effectively promoted, can adapt the continuous discharge rhythm of galvanized sheet production line, avoids the stagnation of production line.

Description

Technical Field

[0001] This utility model relates to the field of galvanized sheet production technology, specifically a passivation device for galvanized sheet production. Background Technology

[0002] In the production and processing of galvanized steel sheets, passivation is a crucial process for ensuring the corrosion resistance of galvanized steel sheets and extending their service life. By forming a dense passivation film on the surface of the galvanized steel sheet, it effectively isolates the galvanized layer from air, moisture, and other corrosive media, preventing oxidation, rust, and other problems. This, in turn, improves the applicability of galvanized steel sheets in downstream industries such as construction, home appliances, and automobile manufacturing. With the increasing demands for galvanized steel sheet quality from downstream industries and the growing need for continuous and efficient production lines, the processing efficiency of passivation equipment, the utilization rate of passivation solution, and the stability of passivation quality have become core factors affecting the production efficiency of galvanized steel sheets.

[0003] Currently, most mainstream galvanized sheet passivation devices in the industry adopt a single-set clamping and intermittent passivation operation mode. Its typical structure includes a liquid storage tank for storing passivation solution and a set of mechanical grippers for clamping galvanized sheets. During operation, the operator must first fix the galvanized sheet to be passivated on the mechanical grippers, and then use a lifting mechanism to immerse the grippers and galvanized sheet into the passivation solution in the liquid storage tank. After the preset passivation time is reached, the lifting mechanism lifts the galvanized sheet and uses a corresponding drying component to dry its surface to form a stable passivation film. Finally, the dried galvanized sheet is removed, and the next sheet to be passivated is clamped and the process is repeated to complete the intermittent passivation operation. This method has low processing efficiency and cannot meet the needs of continuous production lines. Utility Model Content

[0004] To address the shortcomings of existing technologies, this utility model provides a passivation device for galvanized sheet production, which solves the problems mentioned in the background art.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a passivation device for galvanized sheet production, comprising a storage tank for storing a purified solution, and a support frame installed on the outside of the storage tank;

[0006] An alternating assembly is provided on the support frame. The alternating assembly includes two guide rails and toothed plates that are slidably connected inside the two guide rails respectively.

[0007] Both guide rails are vertically mounted on the top of the support frame, and both toothed plates penetrate the top of the support frame. A common gear meshes between the two toothed plates, and a motor with its output end connected to the gear is provided on the support frame.

[0008] Both of the toothed plates are provided with mounting brackets at their bottom ends and opposite sides. Each of the two mounting brackets is provided with at least three pneumatic grippers on opposite sides, and each pneumatic gripper is used to hold a galvanized sheet.

[0009] Furthermore, the mounting brackets on both the left and right sides are located above the liquid storage tank, and the two mounting brackets are arranged in parallel.

[0010] Furthermore, the top projection of the mounting bracket is T-shaped.

[0011] Furthermore, a drying assembly is also provided on the support frame;

[0012] The drying assembly includes a heating structure installed on the top of the support frame. Air ducts are installed on both the left and right sides of the inner top wall of the support frame, and both air ducts are connected to the heating structure through connecting pipes.

[0013] Furthermore, the heating structure includes a wind box installed on top of the support frame, at least one electric heating element is installed inside the wind box, and a blower with its output end connected to the wind box is provided on the outside of the wind box.

[0014] Furthermore, the air outlet ends of both ducts face the mounting bracket.

[0015] Compared with the prior art, the technical solution of this application has the following beneficial effects:

[0016] 1. This passivation device for galvanized sheet production, through the reverse movement design of alternating components, allows the galvanized sheets on the left and right sides to be clamped, passivated, lifted, and dried simultaneously, without waiting for a single unit to complete the entire process. Compared with traditional single-unit passivation devices, the processing efficiency is effectively improved, and it can adapt to the continuous output rhythm of the galvanized sheet production line, avoiding production line stagnation.

[0017] 2. The passivation device for galvanized sheet production uses hot air from the drying component to not only dry the galvanized sheet, but also to blow excess passivation liquid from the sheet surface into the storage tank, effectively improving the recovery rate of the purified liquid, significantly reducing passivation liquid waste, reducing the discharge of passivation liquid waste, lowering the environmental protection treatment pressure, and meeting the requirements of green production. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the structure of this utility model;

[0019] Figure 2 This is a schematic diagram of the alternating component structure of this utility model;

[0020] Figure 3 This is a schematic diagram of the drying component structure of this utility model;

[0021] Figure 4This is a schematic diagram of the internal structure of the bellows of this utility model.

[0022] In the diagram: 1. Liquid storage tank; 2. Support frame; 3. Alternating assembly; 4. Drying assembly; 301. Guide rail; 302. Toothed plate; 303. Gear; 304. Motor; 305. Mounting bracket; 306. Pneumatic gripper; 401. Air duct; 402. Connecting pipe; 403. Air box; 404. Heating element; 405. Blower. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0024] Please see Figure 1-4 In this embodiment, a passivation device for galvanized sheet production achieves efficient passivation treatment and passivation liquid recycling by using a synergistic design of alternating clamping passivation and drying to recover excess passivation liquid, thus solving the problems of low processing efficiency and waste of passivation liquid in traditional passivation devices.

[0025] Specifically, it includes a liquid storage tank 1, a support frame 2, an alternating assembly 3, and a drying assembly 4. These components work together to clamp, passivate, recover excess passivation liquid, and dry the galvanized sheet.

[0026] In detail, the liquid storage tank 1 is a rectangular box made of stainless steel, used to store passivation liquid. The top of the liquid storage tank 1 is open, which makes it easy for the galvanized sheet to be immersed in the passivation liquid, and at the same time, it can recover the excess passivation liquid blown off by the drying component 4.

[0027] Furthermore, the support frame 2 is an aluminum alloy frame structure, installed on the outside of the liquid storage tank 1, straddling the liquid storage tank 1 in a gate shape, and the alternating components 2 are installed on the support frame 2, which include a guide rail 301, a toothed plate 302, a gear 303, a motor 304, a mounting bracket 305, and a pneumatic gripper 306.

[0028] The guide rails 301 are two in number, vertically installed on the left and right sides of the top crossbeam of the support frame 2. They are equipped with guide grooves to guide the toothed plates 302 to slide up and down. There are two toothed plates 302, which are slidably connected in the guide grooves of the two guide rails 301. They both pass through the top crossbeam of the support frame 2 and are arranged with their tooth surfaces facing each other. The gear 303 meshes between the two toothed plates 302 and can drive the two toothed plates 302 to move vertically in opposite directions. The motor 304 is installed on the top crossbeam of the support frame 2 and its output end is connected to the gear 303 through a coupling to provide power for the rotation of the gear 303.

[0029] Furthermore, there are two mounting brackets 305, which are fixed to the opposite sides of the bottom of the two toothed plates 302 respectively. The top projection is T-shaped to enhance the connection stability with the toothed plates 302. The two mounting brackets 305 are arranged in parallel and located above the liquid storage tank 1. Each mounting bracket 305 has at least three pneumatic grippers 306, which are evenly installed on the opposite side of each mounting bracket 305. They are pneumatically driven, and the inner side of the grippers is wrapped with rubber pads to stably clamp the edge of the galvanized sheet while avoiding scratching the surface of the galvanized sheet.

[0030] In actual setup, when the motor 304 drives the gear 303 to rotate, the two meshing toothed plates 302 move in opposite vertical directions along the guide rail 301. When the left toothed plate 302 descends, the right toothed plate 302 rises, and vice versa. Through the reverse movement, the mounting brackets 305 on the left and right sides and the pneumatic grippers 306 can alternately complete the process of clamping the galvanized sheet, immersing it in passivation and lifting it to dry. Compared with the traditional single-set clamping structure, the processing efficiency is effectively improved.

[0031] More specifically, the drying assembly 4 is installed on the support frame 2 and has the functions of drying the passivated galvanized sheet and recovering excess passivation liquid. It includes air duct 401, connecting pipe 402 and heating structure, and the heating structure includes air box 403, electric heating element 404 and blower 405.

[0032] There are two air ducts 401, which are installed on the left and right sides of the inner top wall of the support frame 2 respectively. The air outlet ends of both face the direction of the mounting frame 305, which can form a uniform strip airflow. The connecting pipe 402 is a flexible metal pipe, which is connected to the air duct 401 and the air box 403 at both ends respectively to realize the hot air delivery.

[0033] The bellows 403 is installed in the middle of the top crossbeam of the support frame 2. It has a hollow cavity inside and is used to mix air and heat. There is at least one electric heating element 404 installed inside the bellows 403. When energized, it can generate heat to heat the air inside the bellows 403 to 50-80°C. The blower 405 is installed on the outside of the bellows 403. Its output end is connected to the bellows 403. It can input high-pressure air into the bellows 403 and push the hot air through the connecting pipe 402 into the air duct 401.

[0034] In actual setup, blower 405 inputs air into air box 403, which is heated by electric heating element 404 to form hot air. The hot air is then delivered to air duct 401 through connecting pipe 402 and blown from flat pipe opening onto the rising galvanized sheet. On the one hand, the high-pressure hot air can blow off the excess passivation liquid adhering to the surface of the galvanized sheet, and the fallen passivation liquid flows back into the storage tank 1 for recycling, reducing waste. On the other hand, the hot air can quickly evaporate the passivation liquid remaining on the surface of the galvanized sheet, forming a uniform passivation film.

[0035] It should be noted that the pneumatic gripper 306 used to clamp the galvanized sheet in this embodiment is a four-jaw translational pneumatic gripper 306 from the prior art. This type of gripper can achieve stable fixation of both sides of the galvanized sheet through translational clamping, avoiding scratches on the sheet surface or causing the sheet to shift during clamping. Compatible models can refer to the GOWELL Jingwei Pneumatic MHS4 series, such as MHS4-16D, MHS4-20D, pneumatic fully sealed four-jaw NGQ04, and Festo parallel gripper HGPL-25-40-AB. The above models all have mature translational clamping structures, and the clamping force and accuracy can meet the stable clamping requirements of the galvanized sheet passivation process. They can also adapt to the clamping operation of galvanized sheets of different specifications, which meets the requirements of the operation scenario of this device. Therefore, they will not be described in detail in this application.

[0036] The working principle of the above embodiments is as follows:

[0037] 1. In the initial state, the left toothed plate 302 is in the raised position and the right toothed plate 302 is in the lowered position. The operator aligns the edge of the galvanized sheet to be passivated with the pneumatic gripper 306 of the left mounting bracket 305, starts the pneumatic gripper 306 to clamp the galvanized sheet, controls the motor 304 to drive the gear 303 to rotate clockwise, the left toothed plate 302 slides down along the guide rail 301, and drives the left mounting bracket 305 to descend synchronously with the galvanized sheet until the galvanized sheet is completely immersed in the passivation liquid in the storage tank 1, allowing the passivation liquid to fully react with the surface of the galvanized sheet to form a passivation film.

[0038] 2. After the passivation of the left galvanized sheet is completed, the control motor 304 drives the gear 303 to rotate counterclockwise, the left gear plate 302 rises, and the right gear plate 302 falls; the left mounting bracket 305 lifts the galvanized sheet from the passivation solution. When the galvanized sheet rises below the air duct 401, the hot air blown out of the air duct 401 acts on the surface of the galvanized sheet. The high-pressure hot air first blows off the excess passivation solution on the sheet surface, and the liquid flows down the sheet surface and back into the storage tank 1; then the hot air continues to blow, evaporating the residual passivation solution on the sheet surface, so that the passivation film dries and sets quickly. With the right toothed plate 302 in the raised position, the operator clamps another galvanized sheet to be passivated onto the right pneumatic gripper 306. When the left galvanized sheet begins to rise, the right toothed plate 302 rotates and descends with the gear 303, immersing the right galvanized sheet into the passivation liquid in the storage tank 1. After the left galvanized sheet is dried, the operator removes the dried galvanized sheet and re-clamps the sheet to be passivated. At this point, the right galvanized sheet is passivated and begins to rise, entering the hot air area of ​​the right air duct 401. The operation alternates between left and right, achieving continuous passivation of the galvanized sheet.

[0039] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0040] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A passivation device for galvanized sheet production, characterized in that: It includes a storage tank for storing the purified solution, and a support frame installed on the outside of the storage tank; An alternating assembly is provided on the support frame. The alternating assembly includes two guide rails and toothed plates that are slidably connected inside the two guide rails respectively. Both guide rails are vertically mounted on the top of the support frame, and both toothed plates penetrate the top of the support frame. A common gear meshes between the two toothed plates, and a motor with its output end connected to the gear is provided on the support frame. Both of the toothed plates are provided with mounting brackets at their bottom ends and opposite sides. Each of the two mounting brackets is provided with at least three pneumatic grippers on opposite sides, and each pneumatic gripper is used to hold a galvanized sheet.

2. The passivation device for galvanized sheet production according to claim 1, characterized in that: The mounting brackets on both the left and right sides are located above the liquid storage tank, and the two mounting brackets are arranged in parallel.

3. The passivation device for galvanized sheet production according to claim 1, characterized in that: The top projection of the mounting bracket is T-shaped.

4. The passivation device for galvanized sheet production according to claim 1, characterized in that: A drying assembly is also provided on the support frame; The drying assembly includes a heating structure installed on the top of the support frame. Air ducts are installed on both the left and right sides of the inner top wall of the support frame, and both air ducts are connected to the heating structure through connecting pipes.

5. The passivation device for galvanized sheet production according to claim 4, characterized in that: The heating structure includes a wind box installed on the top of the support frame, at least one electric heating element installed inside the wind box, and a blower with its output end connected to the wind box is provided on the outside of the wind box.

6. The passivation device for galvanized sheet production according to claim 4, characterized in that: The air outlets of both ducts face the mounting bracket.

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