Intelligent hot dipping production line

Abstract

The invention relates to an intelligent hot dipping production line which comprises a processing cabinet and a tin plating mechanism arranged in the processing cabinet. The tinning mechanism comprises a driving assembly arranged on the machining cabinet and located above the tin liquid box, a bearing assembly arranged on the driving assembly and located below the driving assembly, a sealing assembly arranged in a cavity in the top of the tin liquid box, and a limiting piece arranged on one side of the tin liquid box. The flat scraping assembly is arranged on the tin liquid box and penetrates through the side wall of the tin liquid box, the cooling assemblies are arranged on the two sides of the tin liquid box, and the ends of the cooling assemblies extend into the tin liquid box; by arranging the tin plating mechanism, the function of tin plating of workpieces isolated from outside air is achieved, meanwhile, the workpieces can be driven to be dispersed when small workpieces are subjected to tin plating, and then the problems that the quality and performance of plating layers are poor, and the plating layers of the small workpieces are prone to being incomplete are solved.

Description

Technical Field

[0001] The present invention relates to the technical field of intelligent hot-dip plating, and in particular to an intelligent hot-dip plating production line. Background Art

[0002] Hot-dip tinning is a surface treatment process mainly used to form a uniform tin coating on the surface of the workpiece, thereby optimizing the workpiece's corrosion resistance, oxidation resistance, and improving welding performance. By introducing intelligent automation technology into the existing production process, the production line has achieved full automation of the workpiece process from loading, galvanizing, cooling to unloading, reducing manual intervention and improving production efficiency and product quality.

[0003] Chinese patent CN1321788A discloses a method for hot-dip tinning of workpieces. The method involves subjecting the workpiece to be plated to a continuous water and pickling process in a semi-automatic or fully automatic manner to remove dirt and rust from the surface. The workpiece is then dipped in flux to facilitate subsequent tinning, and then dipped in tin liquid. The workpiece then undergoes a series of steps, including shaking, hammering, and rotating, to remove excess tin liquid from the workpiece and distribute it evenly over the workpiece. The workpiece is then cooled and dried.

[0004] In the existing tin plating process, the workpiece will inevitably be exposed to the outside air for a long time during the entire tin plating process. This long-term exposure makes the coating on the surface of the workpiece prone to oxidation and easily absorbs impurities in the air, thereby affecting the quality and performance of the coating. In addition, for some small and asymmetric workpieces, traditional clamping tools are difficult to effectively clamp, and batch addition of tin liquid can easily cause the workpieces to pile up together, resulting in incomplete coating, further affecting the overall quality and consistency of the product. Summary of the invention

[0005] The purpose of the present invention is to address the shortcomings of the existing technology and provide an intelligent hot-dip plating production line. By setting up a tinning mechanism, the function of isolating the workpiece from the outside air during tinning can be achieved. At the same time, when tinning smaller workpieces, the workpieces can be dispersed, thereby solving the problems of poor quality and performance of the coating and the incomplete coating of smaller workpieces.

[0006] To achieve the above-mentioned object, the present invention provides the following technical solution: an intelligent hot-dip galvanizing production line, comprising a processing cabinet and a tinning mechanism arranged inside the processing cabinet; The tin plating mechanism includes a driving assembly arranged on a processing cabinet and located above the tin liquid tank, a receiving assembly arranged on the driving assembly and located below the driving assembly, a closing assembly arranged in a cavity at the top of the tin liquid tank, a limiting member arranged on one side of the tin liquid tank, a flat scraping assembly arranged on the tin liquid tank and penetrating the side wall of the tin liquid tank, and a cooling assembly arranged on both sides of the tin liquid tank with its ends extending into the interior of the tin liquid tank. When the workpiece starts to be tinned, the driving component drives the receiving component and the workpiece to move downward into the tin liquid tank, and cooperates with the cooling component to expel the air in the receiving component. After being immersed in the tin liquid and the plating layer is formed, it is lifted and centrifuged. The cooling component performs preliminary cooling on the workpiece, and the receiving component is then moved out of the tin liquid tank and the workpiece is discharged. Before and after the receiving component enters and exits the tin liquid tank, the driving component cooperates with the scraping component and the limiter to drive the closing component to avoid.

[0007] Furthermore, the driving assembly includes a first driving cylinder arranged on the processing cabinet, a first motor connected to the output end of the first driving cylinder, an external threaded cover connected to the output end of the first motor, and multiple groups of support columns connected to the bottom of the tin liquid tank.

[0008] Furthermore, the receiving assembly includes an internally threaded ring connected to the externally threaded cover, a centrifugal frame connected to the internally threaded ring, multiple groups of avoidance grooves opened at the bottom of the centrifugal frame for the support column to enter, two groups of vents opened on the internally threaded ring, a clamping groove opened on the internally threaded ring, two groups of sealing covers that are mounted on the outside of the centrifugal frame through clamping blocks and the clamping grooves, and a first fixing groove and a second fixing groove opened on the sealing cover.

[0009] Furthermore, the closing assembly includes two groups of first partitions connected to the top cavity of the tin liquid tank and used to block the outlet of the tin liquid tank, a second partition connected to the inside of the first partition through a telescopic member, a first positioning plate and a second positioning plate respectively connected to the first partition and the second partition, a first gear connected to the tin liquid tank, two groups of first racks respectively connected to the first positioning plate and the second positioning plate and meshing with the first gear for transmission, and a first spring connected between the first positioning plate and the tin liquid tank.

[0010] Furthermore, the limiting component includes a limiting rod connected to the tin liquid tank through a torsion spring, a limiting groove opened on the first positioning plate and used to cooperate with the limiting rod to position its own position, a driving rod connected to the output end of the first driving cylinder, and a first protrusion and a second protrusion connected to the driving rod and arranged up and down.

[0011] Furthermore, the flat scraper assembly includes a second driving cylinder connected to one side of the tin liquid tank, an extrusion plate connected to the output end of the second driving cylinder, a round rod connected to the extrusion plate and passing through the tin liquid tank, and a first scraper connected to the end of the round rod and located in the tin liquid tank.

[0012] Furthermore, the cooling assembly includes an air supply pipe and an exhaust pipe respectively passing through both sides of the tin liquid tank, two sets of L-shaped rods connected to the inner wall of the tin liquid tank, a second gear and a third gear connected to the inner wall of the tin liquid tank through a rotating shaft and arranged up and down, a second rack connected to the L-shaped rod and meshing with the second gear for transmission, and a third rack connected to the first scraper and meshing with the third gear for transmission.

[0013] Further, it further includes a recycling mechanism, which includes a reflux assembly disposed at the middle position inside the tin bath and used for recycling the centrifugally thrown-out tin liquid, and a cleaning assembly disposed on one side of the tin bath and used for collecting impurities on the surface of the tin liquid.

[0014] Further, the reflux assembly includes multiple groups of protective plates connected to the inner wall of the tin bath, a guide rod connected to the tin bath, a rectangular frame connected to the guide rod, a follower rack connected to the rectangular frame, a follower gear connected to the tin bath and meshing with the follower rack for transmission, a driving rack connected to the first scraper and meshing with the follower gear for transmission, multiple groups of guide rails connected to the inner wall of the tin bath, multiple trapezoidal blocks connected to the guide rails, an offset block connected to the rectangular frame and having a second spring connected between the offset block and the rectangular frame, and a second scraper connected to the offset block through a mounting rod; The cleaning assembly includes a transmission member connected to the tin bath and provided with multiple groups of steel wires, a collection box penetrating through one side of the tin bath, a transmission shaft penetrating through one side of the tin bath and connected to the transmission member, a ratchet gear connected to the transmission shaft, and a transfer rack connected to the driving rod and meshing with the ratchet gear for transmission.

[0015] Still further, it further includes a loading mechanism for driving multiple groups of receiving assemblies to sequentially complete the loading and discharging of workpieces. The loading mechanism includes a second motor connected to the processing cabinet, a disc connected to the output end of the second motor, multiple groups of rotating arms connected to the disc, a flipping gear connected to the rotating arm, and a semi-tooth ring connected to the processing cabinet and meshing with the flipping gear for transmission.

[0016] The beneficial effects of the present invention are as follows: (1) By setting the loading mechanism, tin plating mechanism, and recycling mechanism, the present invention realizes the full-process automation of the workpiece tin plating process. The components of each mechanism cooperate closely and have clear division of labor, greatly reducing manual intervention and significantly improving production efficiency. At the same time, with the help of intelligent temperature control technology, the temperature inside the tin bath is accurately regulated to ensure that the coating thickness is uniform and meets the production standards, thereby effectively guaranteeing the high-quality output of products.

[0017] (2) By setting a sealing assembly in the tin plating mechanism, the present invention realizes the complete isolation of the workpiece from the outside air when entering and leaving the tin bath. At the same time, with the help of the cooling assembly, the air inside the receiving assembly is completely discharged, and preliminary cooling is carried out before the workpiece leaves the tin bath. These measures effectively avoid the adhesion of dust, impurities or oxidation of the workpiece due to contact with air during the tin plating process, ensuring the quality and stability of the coating. In addition, with the design cooperating with the centrifugal frame, by slowly reciprocatingly rotating and floating up and down the centrifugal frame in the tin liquid and cooperating with the support columns, the problem of incomplete coating of small workpieces in the traditional process is further solved, significantly improving the overall level of the tin plating process.

[0018] In summary, the present invention has the advantages of uniform and complete workpiece coating, and excellent electrical conductivity and oxidation resistance. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 Schematic diagram of the upper loading mechanism of the present invention; Figure 3 This is a schematic diagram of the receiving assembly of the present invention; Figure 4 This is a schematic diagram of the cooling assembly of the present invention; Figure 5 It is a front cross-sectional schematic diagram of the present invention; Figure 6 is a schematic diagram of a closure assembly of the present invention; Figure 7 This is a schematic diagram of the sealing cover of the present invention in an open state; Figure 8 This is a schematic diagram of the reflux assembly of the present invention; Figure 9 This is a schematic diagram of the working state of the second scraper of the present invention; Figure 10 This is a schematic diagram of the receiving assembly entering the tin liquid box according to the present invention; Figure 11 Schematic diagram of the cleaning component of the present invention. DETAILED DESCRIPTION

[0020] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. All other embodiments obtained by ordinary technicians in this field based on the embodiments of the present invention without making any creative efforts shall fall within the scope of protection of the present invention.

[0021] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like to indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, "multiple" means two or more, unless otherwise clearly and specifically defined.

[0022] Example 1 like Figures 1 to 6 As shown, this embodiment provides an intelligent hot-dip coating production line, comprising a processing cabinet 100 and a tinning mechanism 1 disposed inside the processing cabinet 100; The tinning mechanism 1 includes a driving assembly 11 disposed on a processing cabinet 100 and located above a tin liquid tank 200, a receiving assembly 12 disposed on and below the driving assembly 11, a closing assembly 13 disposed in a cavity at the top of the tin liquid tank 200, a stopper 14 disposed on one side of the tin liquid tank 200, a scraping assembly 15 disposed on the tin liquid tank 200 and penetrating the side wall of the tin liquid tank 200, and a cooling assembly 16 disposed on both sides of the tin liquid tank 200 and with ends extending into the interior of the tin liquid tank 200. When the workpiece starts to be tinned, the driving component 11 drives the receiving component 12 and the workpiece to move downward into the tin liquid tank 200, and cooperates with the cooling component 16 to discharge the air in the receiving component 12. After the receiving component 12 is immersed in the tin liquid and the coating is formed, it is lifted and centrifuged. The cooling component 16 performs a preliminary cooling on the workpiece, and the receiving component 12 is then moved out of the tin liquid tank 200 and the workpiece is discharged. Before and after the receiving component 12 enters and exits the tin liquid tank 200, the driving component 11 cooperates with the scraping component 15 and the limiter 14 to drive the closing component 13 to avoid.

[0023] In this embodiment, the tinning mechanism 1 is provided to isolate the workpiece from the outside air during tinning, and at the same time, the workpiece can be dispersed when tinning smaller workpieces, thereby solving the problems of poor quality and performance of the coating and incomplete coating on smaller workpieces.

[0024] It should be noted that before the workpiece enters the receiving component 12, it successively passes through the raw material cleaning tank and the soldering flux tank to oxidize and clean the pollutants and rust on the surface of the workpiece, and form a layer of soldering flux on the surface of the workpiece; the temperature in the molten tin tank 200 and the temperature of the molten tin are between 220°C and 300°C.

[0025] Furthermore, as Figures 2 to 5 shown, the driving component 11 includes a first driving cylinder 111 arranged on the processing cabinet 100, a first motor 112 connected to the output end of the first driving cylinder 111, an external thread cover 113 connected to the output end of the first motor 112, and a plurality of support columns 114 connected to the bottom of the molten tin tank 200.

[0026] In this embodiment, by setting the driving component 11 to drive the receiving component 12 to perform centrifugal work on the workpiece, the closing component 13, the limiting component 14, and the cleaning component 22 are synchronously driven to work, so that multiple operations are coordinated, which is beneficial to the cooperation between components to improve efficiency and save power resources.

[0027] Specifically, when the receiving component 12 drives the workpiece to reach below the driving component 11 under the drive of the loading mechanism 3, the first driving cylinder 111 starts to work, drives the first motor 112 and the external thread cover 113 to move downward through the output end, and at the same time the first motor 112 drives the external thread cover 113 to rotate slowly, so that the external thread cover 113 is connected to the receiving component 12.

[0028] Furthermore, as Figure 3 shown, the receiving component 12 includes an internal thread ring 121 connected to the external thread cover 113, a centrifugal frame 122 connected to the internal thread ring 121, a plurality of avoidance grooves 123 opened at the bottom of the centrifugal frame 122 for the support columns 114 to enter, two ventilation openings 124 opened on the internal thread ring 121, a card slot 125 opened on the internal thread ring 121, two sealing covers 127 sleeved outside the centrifugal frame 122 through a clamping block 126 cooperating with the card slot 125, and a first fixing groove 128 and a second fixing groove 129 opened on the sealing cover 127.

[0029] In this embodiment, by setting the avoidance grooves 123 on the receiving component 12 to cooperate with the support columns 114 arranged at the bottom of the molten tin tank 200 by the driving component 11, when the workpiece is immersed in the molten tin, the plurality of support columns 114 play a role in lifting and dispersing the stacked workpieces, and at the same time cooperate with the first motor 112 and the first driving cylinder 111 to rotate and float up and down slowly, so as to help as many workpieces as possible to contact the molten tin on the premise of maintaining the overall stability of the molten tin, and achieve the purpose of complete plating.

[0030] In detail, when the first driving cylinder 111 drives the external threaded cover 113 to move downward and is driven to rotate by the first motor 112, the external threaded cover 113 gradually screws together with the internal threaded ring 121 to form a whole. Then the first motor 112 stops working, and the first driving cylinder 111 drives the receiving assembly 12 to move downward into the tin liquid tank 200.

[0031] It should be noted that the length of the avoidance groove 123 is greater than the width of the support column 114 , thereby leaving space for the centrifugal frame 122 to rotate slowly. The internal thread ring 121 and the centrifugal frame 122 are formed integrally.

[0032] Further, if Figures 1 to 2 and Figures 5 to 6 as well as Figure 9 As shown, the closing assembly 13 includes two groups of first partitions 131 connected to the top cavity of the tin liquid tank 200 and used to seal the outlet of the tin liquid tank 200, a second partition 133 connected to the inside of the first partition 131 through a telescopic member 132, a first positioning plate 134 and a second positioning plate 135 respectively connected to the first partition 131 and the second partition 133, a first gear 136 connected to the tin liquid tank 200, two groups of first racks 137 respectively connected to the first positioning plate 134 and the second positioning plate 135 and engaged with the first gear 136 for transmission, and a first spring 138 connected between the first positioning plate 134 and the tin liquid tank 200.

[0033] In this embodiment, a closing component 13 is provided to cooperate with the receiving component 12. When the receiving component 12 closes the top opening of the tin liquid box 200, the closing component 13 opens. When the receiving component 12 completely enters the interior of the tin liquid box 200, the closing component 13 closes quickly. This method is followed during the process of the receiving component 12 entering and exiting the tin liquid box 200, thereby ensuring that there is no circulation between the interior of the tin liquid box 200 and the outside air, thereby reducing the oxidation of the tin liquid surface inside the tin liquid box 200. At the same time, it is also ensured that the surface of the workpiece after tin plating is isolated from the outside world before the plating is stable, so that the plating performance is stable.

[0034] Specifically, when the receiving assembly 12 starts to move downward driven by the first driving cylinder 111, in the first state, the two sets of sealing covers 127 on the receiving assembly 12 first enter the top opening of the tin bath 200, and at this time, the opening is closed by the sealing covers 127. In the second state, then the receiving assembly 12 continues to move downward a small distance. At this time, the sealing cover 127 is about to contact the first partition plate 131. At the same time, the limiting member 14 will release the limit on the closing assembly 13 driven by the first driving cylinder 111, and the closing assembly 13 will then open under the contraction of the first spring 138. The opening process includes the first spring 138 driving the connected first partition plate 131 to move away. At the same time, through the meshing transmission of the first positioning plate 134, the first rack 137 and the first gear 136, the other set of the first partition plate 131 and the second positioning plate 135 are driven to move away. In the third state, the receiving assembly 12 continues to move downward past the closing assembly 13 until it stops when the top of the sealing cover 127 is flush with the inner wall of the top of the tin bath 200. After the air in the receiving assembly 12 is discharged by the cooling assembly 16, the flat scraping assembly 15 starts to work and drives the second positioning plate 135 to reset, thereby causing the closing assembly 13 to reset and closing the top of the tin bath 200. In the closed state, the two sets of the first partition plates 131 surround the circumferential position of the output end of the first motor 112. The two sets of the second partition plates 133 contract into the first partition plates 131 under the extrusion. After the receiving assembly 12 is removed from the tin bath 200, the second partition plates 133 are reset under the action of the telescopic member 132 and cooperate with the first partition plates 131 to close the opening of the tin bath 200 again.

[0035] It should be noted that after working for a period of time, a part of nitrogen is supplemented into the tin bath 200 to prevent the internal air pressure from changing and external air from infiltrating from the gap position.

[0036] Further, as Figure 6 shown, the limiting member 14 includes a limiting rod 142 connected to the tin bath 200 through a torsion spring member 141, a limiting groove 143 opened on the first positioning plate 134 and used to cooperate with the limiting rod 142 to position its own position, a driving rod 144 connected to the output end of the first driving cylinder 111, and a first convex block 145 and a second convex block 146 connected to the driving rod 144 and arranged up and down.

[0037] In this embodiment, by setting the limiting member 14 to fix the position of the closing assembly 13, and then cooperating with the driving assembly 11, the top opening of the tin bath 200 can be quickly opened during the process of the receiving assembly 12 entering the tin bath 200, and the opening can be closed by cooperating with the closing assembly 13 after the tin plating work is completed, so as to minimize the entry of air as much as possible.

[0038] Specifically, in the above first state, the two sets of sealing covers 127 enter the top opening of the molten tin tank 200. At this time, the first bump 145 connected to the driving rod 144 starts to contact and squeeze the limiting rod 142. As the second state progresses, the limiting rod 142 is driven by the first bump 145 to move upward out of the limiting groove 143 on the first positioning plate 134. At this time, the closing assembly 13 opens. Then, the limiting rod 142 is placed on the first positioning plate 134 under the action of the torsion spring member 141. Next, in the third state, the closing assembly 13 resets, and the limiting rod 142 also re-enters the limiting groove 143 again at the end of the reset of the first positioning plate 134. In addition, when the top of the sealing cover 127 in the receiving assembly 12 is flush with the inner wall of the top of the molten tin tank 200, the second bump 146 also completes the action of crossing over the limiting rod 142.

[0039] It should be noted that the first bump 145 plays a role when the receiving assembly 12 enters the molten tin tank 200, and the second bump 146 plays a role when the receiving assembly 12 leaves the molten tin tank 200.

[0040] Further, as Figures 2 to 8 shown, the flat scraping assembly 15 includes a second driving cylinder 151 connected to one side of the molten tin tank 200, a pressing plate 152 connected to the output end of the second driving cylinder 151, a round rod 153 connected to the pressing plate 152 and passing through the molten tin tank 200, and a first scraping plate 154 connected to the end of the round rod 153 and located inside the molten tin tank 200.

[0041] In this embodiment, by setting the flat scraping assembly 15, before the receiving assembly 12 drives the workpiece to immerse in the molten tin, the impurities that may exist on the liquid surface are pushed to one side, thereby ensuring that there are no impurities on the surface of the workpiece and ensuring the stable performance of the coating. At the same time, the flat scraping assembly 15 provides power for the reset of the closing assembly 13, the opening of the sealing cover 127, and the operation of the reflux assembly 21, achieving multiple functions at once and greatly improving the work efficiency.

[0042] Specifically, in the above third state, when the receiving assembly 12 continues to move downward past the closing assembly 13 until the top of the sealing cover 127 is flush with the inner wall of the top of the molten tin tank 200, the cooling assembly 16 starts to quickly discharge the air inside the receiving assembly 12. Subsequently, the flat scraping assembly 15 starts to work. First, the second driving cylinder 151 drives the pressing plate 152, the round rod 153, and the first scraping plate 154 to move horizontally, pushing the impurities on the molten tin liquid surface to one side. At the end of the pushing process, the pressing plate 152 contacts and squeezes the second positioning plate 135, and cooperates with the limiting member 14 to reset the closing assembly 13.

[0043] Further, as Figures 2 to 7 and Figure 10As shown, the cooling assembly 16 includes an air inlet pipe 161 and an exhaust pipe 162 respectively penetrating through both sides of the tin bath 200, two sets of L-shaped rods 163 connected to the inner wall of the tin bath 200, a second gear 165 and a third gear 166 connected to the inner wall of the tin bath 200 through a rotating shaft 164 and arranged vertically, a second rack 167 connected to the L-shaped rod 163 and meshing with the second gear 165, and a third rack 168 connected to the first scraper 154 and meshing with the third gear 166.

[0044] In this embodiment, by arranging the cooling assembly 16, all the air inside the receiving assembly 12 is exhausted before tin plating, thereby ensuring that the workpiece coating is not oxidized by the oxygen brought in by the receiving assembly 12. At the same time, the nitrogen environment inside the tin bath 200 is maintained. And before the receiving assembly 12 is removed from the tin bath 200 after tin plating is completed, the workpiece is preliminarily cooled to ensure that the coating reaches a stable state before being exposed to the external air.

[0045] Specifically, in the above-mentioned third state, when the receiving assembly 12 continues to move downward and passes over the closing assembly 13 until the top of the sealing cover 127 is flush with the inner wall of the top of the tin bath 200, the first fixing groove 128 on the sealing cover 127 is exactly aligned with the air inlet pipes 161 and the exhaust pipe 162 on both sides, and the second fixing groove 129 is engaged with the end of the L-shaped rod 163. At this time, the air inlet pipe 161 quickly fills the inside of the centrifugal frame 122 with nitrogen through the ventilation opening 124, and the original air is sent out from the exhaust pipe 162. Then when the flat scraping assembly 15 starts to work, the third rack 168 connected to the first scraper 154 drives the third gear 166 to rotate, and then through the rotating shaft 164, the second gear 165 and the second rack 167 engage and drive, separating the two sets of L-shaped rods 163 to both sides, and finally driving the two sets of sealing covers 127 to move on the air inlet pipes 161 and the exhaust pipe 162 and separate from the centrifugal frame 122. Thus, the work before tin plating is completed. The centrifugal frame 122 is driven by the first driving cylinder 111 to move downward until the centrifugal frame 122 is immersed in the tin liquid. At the same time, the support columns 114 inside the tin liquid enter the centrifugal frame 122 through the avoidance grooves 123 and lift up some of the workpieces. Subsequently, with the cooperation of the first motor 112 and the first driving cylinder 111, slow reciprocating rotation and up and down floating are applied, so that multiple workpieces can all be in full contact with the tin liquid. When the temperature of the workpieces is the same as the temperature of the tin liquid, the centrifugal frame 122 is lifted upward to leave the tin liquid and starts centrifugal work to separate the excess tin liquid; After the separation is completed, the centrifugal frame 122 returns to the working position of the cooling assembly 16 again. At this time, the flat scraping assembly 15 starts to reset, the extrusion plate 152 cancels the extrusion of the second positioning plate 135, and at the same time drives the L-shaped rod 163 to fit the two sealing covers 127 together. The clamping blocks 126 on the sealing covers 127 are clamped into the clamping grooves 125 on the internal thread ring 121 again, thereby closing the centrifugal frame 122 again. At this time, nitrogen gas at a lower temperature is conveyed through the air delivery pipe 161 to preliminarily cool the workpiece, making the coating tend to be stable. After the cooling is completed, under the drive of the first driving cylinder 111, the receiving assembly 12 starts to move upward away from the tin bath 200. At the initial stage of the movement, the second convex block 146 on the driving rod 144 immediately presses one end of the limiting rod 142, causing the end of the limiting rod 142 to move downward away from the limiting groove 143 on the first positioning plate 134. Immediately afterwards, the closing assembly 13 opens again. When the receiving assembly 12 is about to leave the opening of the tin bath 200, the flat scraping assembly 15 works again for a reciprocating movement, and the closing assembly 13 is reset in cooperation with the limiting member 14 through the extrusion plate 152 to close the tin bath 200.

[0046] It should be noted that one-way valves are provided in the air delivery pipe 161, the exhaust pipe 162 and the ventilation port 124; the first fixing groove 128 is in conformity with the outer shapes of the air delivery pipe 161 and the exhaust pipe 162.

[0047] Embodiment 2 As Figures 2 to 9 and Figure 11 shown, the same or corresponding components as those in Embodiment 1 adopt the corresponding reference numerals in Embodiment 1. For the sake of simplicity, only the differences from Embodiment 1 will be described below. The difference between this Embodiment 2 and Embodiment 1 lies in: As Figures 2 to 9 and Figure 11 shown, it further includes a recovery mechanism 2. The recovery mechanism 2 includes a reflux assembly 21 arranged at the middle position inside the tin bath 200 and used for recovering the centrifugally thrown tin liquid, and a cleaning assembly 22 arranged on one side of the tin bath 200 and used for collecting impurities on the tin liquid surface.

[0048] In this embodiment, by setting the recovery mechanism 2, it is ensured that the tin liquid inside the tin bath 200 can be fully utilized, and it can maintain the best state every time it is used, ensuring that the coating on the workpiece contains no impurities and has excellent performance when tin plating.

[0049] Specifically, after the centrifugal separation of the workpiece is completed, the reflux assembly 21 re-guides the thrown tin liquid into the lower tin liquid by scraping, and the cleaning assembly 22 collects the impurities aggregated by the flat scraping assembly 15.

[0050] Furthermore, as Figure 4 and Figures 8 to 9 and Figure 11As shown in the figure, the reflux assembly 21 includes multiple groups of protective plates 211 connected to the inner wall of the molten tin tank 200, guide rods 212 connected to the molten tin tank 200, rectangular frames 213 connected to the guide rods 212, follower racks 214 connected to the rectangular frames 213, follower gears 215 connected to the molten tin tank 200 and meshing with the follower racks 214, drive racks 216 connected to the first scraper 154 and meshing with the follower gears 215, multiple groups of guide rails 217 connected to the inner wall of the molten tin tank 200, trapezoidal blocks 218 connected to the guide rails 217, offset blocks 2110 connected to the rectangular frames 213 and connected to the rectangular frames 213 by second springs 219, and second scrapers 2112 connected to the offset blocks 2110 through mounting rods 2111; The cleaning assembly 22 includes a transmission member 222 connected to the molten tin tank 200 and provided with multiple groups of steel wires 221, a collection box 223 penetrating through one side of the molten tin tank 200, a transmission shaft 224 penetrating through one side of the molten tin tank 200 and connected to the transmission member 222, a ratchet gear 225 connected to the transmission shaft 224, and an adjustment rack 226 connected to the drive rod 144 and meshing with the ratchet gear 225.

[0051] In this embodiment, by arranging multiple groups of protective plates 211 that are mutually staggered, on the one hand, it ensures that the centrifugally thrown molten tin can be confined within the space where the protective plates 211 are located, and on the other hand, it is beneficial to arrange multiple groups of second scrapers 2112 that do not interfere with each other to recover the thrown molten tin without dead angles and prevent the molten tin from remaining and accumulating on the protective plates 211.

[0052] Specifically, when the flat scraping assembly 15 moves forward for the first time to push the impurities on the surface of the tin liquid, the driving rack 216 connected to the first scraper 154 drives the follower gear 215 to rotate, thereby causing the rectangular frame 213 to move upward together with the follower rack 214 above the protection plate 211. When the centrifugation ends, the first scraper 154 starts to reset, thereby driving the rectangular frame 213 to reset downward. During this process, the mounting rod 2111 first squeezes against the top inclined surface of the guide rail 217, causing the second spring 219 to stretch. The mounting rod 2111 drives the offset block 2110 to move, thereby causing the second scraper 2112 to closely adhere to the surface of the protection plate 211. As the rectangular frame 213 moves downward to the bottom, the second scraper 2112 scrapes the tin liquid on the protection plate 211, and the mounting rod 2111 separates from the guide rail 217. Driven by the second spring 219, the second scraper 2112 separates from the protection plate 211. At this time, there is still some tin liquid adhering to the second scraper 2112. When the flat scraping assembly 15 reciprocates for the second time to drive the closing assembly 13 to close, the rectangular frame 213 moves up and down again. During the upward movement, the mounting rod 2111 squeezes against the bottom inclined surface of the guide rail 217, causing the second spring 219 to compress. Under the guidance of multiple trapezoidal blocks 218, the second spring 219 continuously expands and contracts, thereby driving the second scraper 2112 to vibrate continuously when moving upward, shaking off the remaining tin liquid, and cleaning the protection plate 211 again when moving downward; When the temperature of the workpiece is the same as that of the tin liquid and it is lifted upward from the tin liquid, the driving rod 144 drives the ratchet gear 225 to rotate through the adjustment rack 226, and then drives the transmission member 222 to rotate through the transmission shaft 224. At this time, the impurities gathered by the first scraper 154 are adhered by multiple steel wires 221 and collected in cooperation with the scraping groove on the collection box 223.

[0053] It should be noted that intelligent temperature control devices are provided on both sides of the tin liquid tank 200 for accurately controlling the temperature inside the tin liquid tank 200 and the temperature of the tin liquid; a damper is provided between the guide rod 212 and the rectangular frame 213 for positioning the position of the rectangular frame 213.

[0054] Embodiment 3 As Figure 2 shown, where the same or corresponding components as those in Embodiment 1 are labeled with the corresponding reference numerals in Embodiment 1. For the sake of simplicity, only the differences from Embodiment 1 will be described below. The differences between this Embodiment 3 and Embodiment 1 are as follows: As Figure 2As shown, it further includes an upper loading mechanism 3 for driving multiple groups of receiving components 12 to sequentially complete the loading and discharging of workpieces. The upper loading mechanism 3 includes a second motor 31 connected to the processing cabinet 100, a disc 32 connected to the output end of the second motor 31, multiple groups of rotating arms 33 connected to the disc 32, a flipping gear 34 connected to the rotating arm 33, and a semi-tooth ring 35 connected to the processing cabinet 100 and meshing with the flipping gear 34 for transmission.

[0055] In this embodiment, by setting the upper loading mechanism 3, multiple groups of receiving components 12 work alternately, thereby improving the work efficiency, enhancing the degree of automation, and at the same time facilitating the detection of the centrifugal frame 122 and being convenient for replacement.

[0056] Specifically, the second motor 31 drives the disc 32 to rotate, and then drives multiple groups of rotating arms 33 to rotate. At the workpiece loading position, the washed and flux-impregnated workpieces are loaded into the receiving component 12. At the tin plating position, the corresponding receiving component 12 is driven by the driving component 11 to be separated from the rotating arm 33. After tin plating, the receiving component 12 is snapped onto the corresponding rotating arm 33 again, and then is transferred to the workpiece discharging position. The flipping gear 34 provided on the rotating arm 33 cooperates with the semi-tooth ring 35 to cause the rotating arm 33 to drive the receiving component 12 to flip 180°. The parts are output and collected. At the next set of teeth of the semi-tooth ring 35, the rotating arm 33 and the receiving component 12 rotate 180° again to reset and are ready to receive workpieces again.

[0057] It should be noted that the sealing cover 127 is fixed by friction through extrusion with the rotating arm 33. When the external thread cover 113 is assembled with the internal thread ring 121, the position state of the receiving component 12 remains unchanged.

[0058] Working steps Step 1: Workpiece processing. Before the workpiece enters the receiving component 12, it sequentially passes through the raw material cleaning tank and the flux tank to oxidize and clean the pollutants and rust on the surface of the workpiece, and form a layer of flux on the surface of the workpiece; then the upper loading mechanism 3 drives the receiving component 12 loaded with the workpiece to reach the tin plating working position. Step 2, isolate the air. After the workpiece is in place, the driving assembly 11 starts working. The first driving cylinder 111 drives the first motor 112 and the external threaded cover 113 to move downward through the output end. At the same time, the first motor 112 drives the external threaded cover 113 to rotate slowly, so that the external threaded cover 113 is screwed with the internal threaded ring 121 on the receiving assembly 12 to form a whole. When the receiving assembly 12 starts to move downward under the drive of the first driving cylinder 111, the two sets of sealing covers 127 just enter the top opening of the tin liquid tank 200. The limiter 14 releases the limit on the closing assembly 13 under the drive of the first driving cylinder 111, and the closing assembly 13 opens accordingly. The receiving assembly 12 continues to move downward over the closing assembly 13 until the top of the sealing cover 127 is flush with the inner wall of the top of the tin liquid tank 200 and stops. After the air in the receiving assembly 12 is discharged by the cooling assembly 16, the scraping assembly 15 starts working and drives the closing assembly 13 to reset.

[0059] Step 3: tinning the workpiece. After the air is removed, the sealing cover 127 of the receiving assembly 12 is separated from the centrifugal frame 122 under the drive of the flat scraper assembly 15. At the same time, the flat scraper assembly 15 also cleans the surface of the tin liquid. The first driving cylinder 111 drives the centrifugal frame 122 to move downward until the centrifugal frame 122 is immersed in the tin liquid. Then, the first motor 112 and the first driving cylinder 111 are coordinated to apply slow reciprocating rotation and up and down floating, and the support column 114 lifts and moves the workpiece so that the workpiece is fully in contact with the tin liquid. When the temperature of the workpiece is consistent with that of the tin liquid, the centrifugal frame 122 is lifted up and away from the tin liquid and starts centrifugal work to separate the excess tin liquid. Step 4, cooling output. The centrifugal frame 122 after centrifugation returns to the working position of the cooling component 16 again. At this time, the flat scraper component 15 begins to reset, driving the sealing plate to re-fasten on the centrifugal frame 122 to form a closed space. Then, the gas pipe 161 delivers low-temperature nitrogen to preliminarily cool the workpiece, so that the coating tends to be stable. After the cooling is completed, the receiving component 12 begins to move upward away from the tin liquid tank 200 under the drive of the first driving cylinder 111, and the closing component 13 cooperates with the flat scraper component 15 to complete the opening and closing process again. At the same time, the reflux component 21 redirects the centrifugally swung tin liquid into the tin liquid below by scraping. The workpiece in the receiving component 12 is driven to the output position by the upper loading mechanism 3, and the workpiece is discharged and collected by flipping.

[0060] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. An intelligent hot-dip galvanizing production line, characterized in that, It includes a processing cabinet and a tinning mechanism arranged inside the processing cabinet; The tin plating mechanism includes a driving assembly arranged on a processing cabinet and located above the tin liquid tank, a receiving assembly arranged on the driving assembly and located below the driving assembly, a closing assembly arranged in a cavity at the top of the tin liquid tank, a limiting member arranged on one side of the tin liquid tank, a flat scraping assembly arranged on the tin liquid tank and penetrating the side wall of the tin liquid tank, and a cooling assembly arranged on both sides of the tin liquid tank with its ends extending into the interior of the tin liquid tank. When the workpiece starts to be tinned, the driving component drives the receiving component and the workpiece to move downward into the tin liquid tank, and cooperates with the cooling component to expel the air in the receiving component. After being immersed in the tin liquid and the plating layer is formed, it is lifted and centrifuged. The cooling component performs preliminary cooling on the workpiece, and the receiving component is then moved out of the tin liquid tank and the workpiece is discharged. Before and after the receiving component enters and exits the tin liquid tank, the driving component cooperates with the scraping component and the limiter to drive the closing component to avoid.

2. The intelligent hot-dip plating production line according to claim 1, wherein, The driving assembly includes a first driving cylinder arranged on a processing cabinet, a first motor connected to an output end of the first driving cylinder, an external threaded cover connected to an output end of the first motor, and multiple groups of support columns connected to the bottom of the tin liquid tank.

3. The intelligent hot-dip galvanizing production line according to claim 2, wherein, The receiving assembly includes an internal threaded ring connected to the external threaded cover, a centrifugal frame connected to the internal threaded ring, multiple groups of avoidance grooves opened at the bottom of the centrifugal frame for the support column to enter, two groups of ventilation holes opened on the internal threaded ring, a clamping groove opened on the internal threaded ring, two groups of sealing covers that are sleeved on the outside of the centrifugal frame through clamping blocks and the clamping grooves, and a first fixing groove and a second fixing groove opened on the sealing cover.

4. An intelligent hot-dip galvanizing production line according to claim 3, characterized in that The closing assembly includes two groups of first partitions connected to the top cavity of the tin liquid tank and used to block the outlet of the tin liquid tank, a second partition connected to the inside of the first partition through a telescopic member, a first positioning plate and a second positioning plate respectively connected to the first partition and the second partition, a first gear connected to the tin liquid tank, two groups of first racks respectively connected to the first positioning plate and the second positioning plate and meshing with the first gear for transmission, and a first spring connected between the first positioning plate and the tin liquid tank.

5. An intelligent hot-dip galvanizing production line according to claim 4, characterized in that, The limiting component includes a limiting rod connected to the tin liquid tank through a torsion spring, a limiting groove opened on the first positioning plate and used to cooperate with the limiting rod to position itself, a driving rod connected to the output end of the first driving cylinder, and a first protrusion and a second protrusion connected to the driving rod and arranged up and down.

6. The intelligent hot dip galvanizing production line according to claim 5, characterized in that, The flat scraping assembly includes a second driving cylinder connected to one side of the tin liquid tank, an extrusion plate connected to the output end of the second driving cylinder, a round rod connected to the extrusion plate and passing through the tin liquid tank, and a first scraper connected to the end of the round rod and located in the tin liquid tank.

7. An intelligent hot dip galvanizing production line according to claim 6, characterized in that, The cooling assembly includes an air supply pipe and an exhaust pipe respectively passing through both sides of the tin liquid tank, two groups of L-shaped rods connected to the inner wall of the tin liquid tank, a second gear and a third gear connected to the inner wall of the tin liquid tank through a rotating shaft and arranged up and down, a second rack connected to the L-shaped rod and meshing with the second gear for transmission, and a third rack connected to the first scraper and meshing with the third gear for transmission.

8. An intelligent hot dip galvanizing production line according to claim 6, characterized in that, It further includes a recycling mechanism, which includes a reflux assembly disposed at the middle position inside the tin bath and used for recycling the centrifugally thrown tin liquid, and a cleaning assembly disposed on one side of the tin bath and used for collecting impurities on the liquid surface of the tin liquid.

9. An intelligent hot-dip galvanizing production line according to claim 8, characterized in that, The reflux assembly includes multiple groups of protective plates connected to the inner wall of the tin bath, a guide rod connected to the tin bath, a rectangular frame connected to the guide rod, a follower rack connected to the rectangular frame, a follower gear connected to the tin bath and meshing with the follower rack for transmission, a driving rack connected to the first scraper and meshing with the follower gear for transmission, multiple groups of guide rails connected to the inner wall of the tin bath, multiple trapezoidal blocks connected to the guide rails, an offset block connected to the rectangular frame and having a second spring connected therebetween, and a second scraper connected to the offset block through a mounting rod; The cleaning assembly includes a transmission member connected to the tin bath and provided with multiple groups of steel wires, a collection box penetrating through one side of the tin bath, a transmission shaft penetrating through one side of the tin bath and connected to the transmission member, a ratchet gear connected to the transmission shaft, and a mobilizing rack connected to the driving rod and meshing with the ratchet gear for transmission.

10. The intelligent hot-dip plating production line according to claim 1, characterized in that, It further includes a loading mechanism for driving multiple groups of receiving assemblies to sequentially complete the loading and discharging of workpieces. The loading mechanism includes a second motor connected to the processing cabinet, a disc connected to the output end of the second motor, multiple groups of rotating arms connected to the disc, a flipping gear connected to the rotating arm, and a half-tooth ring connected to the processing cabinet and meshing with the flipping gear for transmission.

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