A production equipment and production method for matte electroplated tin thin copper foil

Abstract

The present invention discloses a production device for matte electroplated tin thin copper foil, which includes a wire pay-off device, a tin plating support, a tin plating device and a wire take-up device; the tin plating device is arranged on the tin plating support; it further includes a turning device; the turning device is arranged at one end of the tin plating support and is used to guide the copper foil strip to turn back; both the wire take-up device and the wire pay-off device are located on the side of the tin plating support away from the turning device; the tin plating device includes a tin plating mechanism arranged along the length direction of the tin plating support; the tin plating mechanism includes an upper electroplating tin component and a lower electroplating tin component; the upper electroplating tin component is located above the lower electroplating tin component; the turning device is located between the adjacent upper electroplating tin component and lower electroplating tin component. In the present invention, the path of the copper foil strip is in a lying U shape, greatly shortening the length of the production line, reducing the floor area, being adaptable to a relatively small workshop, and saving the production cost. The present invention also discloses a production method for matte electroplated tin thin copper foil, which uses the above production device.

Description

Technical Field

[0001] The present invention relates to the field of copper foil strip production, and more particularly to an apparatus and a method for producing matte electroplated tin thin copper foil. Background Art

[0002] The thin copper foil used for glass electroheating usually has a tin coating. Tin can improve corrosion protection, maintain solderability, and provide a better contact surface than bare copper metal.

[0003] The existing tin-plated copper foil strip is generally produced and processed through an assembly line. The layout of the assembly line is arranged in a straight line. The copper foil strip leaves the pay-off device and then passes through pre-cleaning, tin plating, post-cleaning, and drying in sequence, and finally enters the take-up device for coiling. Since there are generally several processes for pre-cleaning, tin plating, and post-cleaning, the overall length of the assembly line will be very long, so the floor area of the assembly line will be very large, and the required workshop length will also be very long. Summary of the Invention

[0004] In order to overcome the deficiencies in the prior art, the present invention provides an apparatus and a method for producing matte electroplated tin thin copper foil, which have the advantage of small floor area.

[0005] In order to achieve the above object, the present invention adopts the following technical solutions:

[0006] An apparatus for producing matte electroplated tin thin copper foil includes a pay-off device, a tin plating support, a tin plating device, and a take-up device; the tin plating device is arranged on the tin plating support; it further includes a turning device; the turning device is arranged at one end of the tin plating support and is used to guide the copper foil strip to turn back; both the take-up device and the pay-off device are located on the side of the tin plating support away from the turning device; the tin plating device includes a tin plating mechanism arranged along the length direction of the tin plating support; the tin plating mechanism includes an upper electroplating tin component and a lower electroplating tin component; the upper electroplating tin component is located above the lower electroplating tin component; the height position of the turning device is between the upper electroplating tin component and the lower electroplating tin component; the copper foil strip passes through the pay-off device, the lower electroplating tin component, the turning device, the upper electroplating tin component, and the take-up device in sequence.

[0007] By adopting the above technical solution, the copper foil strip leaves the pay-off device, then passes through the lower electroplating tin assembly, and then passes through the flipping device to turn the copper foil strip over and fold it back in the height direction. Then it passes through the upper electroplating tin assembly again and finally reaches the take-up device. Both the take-up device and the pay-off device are located on the side of the tin plating bracket away from the flipping device. In this way, the path of the copper foil strip is in a lying U shape, which can shorten the original assembly line length by about half, greatly shortening the length of the assembly line, reducing the floor area, adapting to a relatively small workshop, and saving production costs. At the same time, since the loading of the copper foil strip and the unloading of the electroplated tin copper foil are on the same side of the tin plating bracket, it is convenient for the operator to operate, saving time and effort. Considering that the weight of the copper foil strip increases after electroplating, the copper foil strip is designed to pass through the lower electroplating tin assembly first and then through the upper electroplating tin assembly after flipping. During the traction process, it is necessary to overcome the self-gravity of the copper foil strip to lift it from the lower electroplating tin assembly to the upper electroplating tin assembly, which is beneficial to ensuring the tension of the copper foil strip during transportation and avoiding excessive sagging of the copper foil strip during transportation and scratching the upper and lower electroplating tin assemblies, which affects the electroplating effect. By adopting the method of turning the copper foil strip over and folding it back in the height direction, when electroplating multiple copper foil strips simultaneously, only the overall width of the production equipment needs to be appropriately increased, and it is less restricted by the site, which is beneficial to the transformation of the production equipment and the improvement of production efficiency.

[0008] Optionally, the tin plating mechanism further includes an electroplating solution temporary storage tank and an electroplating solution circulation assembly located below the lower electroplating tin assembly; the electroplating solution in the upper electroplating tin assembly and the lower electroplating tin assembly flows down into the electroplating solution temporary storage tank; the electroplating solution circulation assembly filters the electroplating solution in the electroplating solution temporary storage tank and then reinjects it into the upper electroplating tin assembly and the lower electroplating tin assembly.

[0009] By adopting the above technical solution, the electroplating solution flows down from the upper electroplating tin assembly and the lower electroplating tin assembly into the electroplating solution temporary storage tank, and then is reinjected into the lower electroplating tin assembly and the upper electroplating tin assembly through the electroplating solution circulation assembly. In this way, the moving path of the electroplating solution is reduced, the layout of the pipelines is reduced, and the number of driving parts such as pumps is reduced, which is beneficial to the rapid replenishment and circulation of the electroplating solution and ensures the electroplating efficiency and effect.

[0010] Optionally, the electroplating solution circulation assembly includes an electroplating solution circulation pump; the liquid outlet end of the electroplating solution circulation pump is connected with an electroplating solution outlet pipe; the electroplating solution outlet pipe includes electroplating solution outlet branch pipes connected to the upper electroplating tin assembly and the lower electroplating tin assembly; and liquid outlet valves are arranged on the electroplating solution outlet branch pipes.

[0011] By adopting the above technical solution, the electroplating solution circulation pump injects the filtered electroplating solution into the upper electroplating tin assembly and the lower electroplating tin assembly, so that the upper electroplating tin assembly and the lower electroplating tin assembly can be normally used for electroplating; if a certain upper electroplating tin assembly or lower electroplating tin assembly needs to suspend operation, the liquid outlet valve can be closed, and the electroplating solution in the corresponding upper electroplating tin assembly or lower electroplating tin assembly cannot be replenished, and finally flows into the electroplating solution temporary storage tank, so that the electroplating solution in the corresponding upper electroplating tin assembly or lower electroplating tin assembly is emptied and no electroplating will be carried out; the electroplating time of the copper foil strip can be increased or decreased, which is beneficial to controlling the thickness of the tin layer on the copper foil strip.

[0012] Optionally, a plurality of the upper electroplating tin assemblies and the lower electroplating tin assemblies are provided. The tin plating mechanism includes a guide roller mechanism, and the guide roller mechanism is arranged between two adjacent upper electroplating tin assemblies and between two adjacent lower electroplating tin assemblies; the guide roller mechanism includes a pair of side guide rollers, an intermediate guide roller and a driving component; the intermediate guide roller is located between the pair of side guide rollers; the driving component is used to drive the side guide rollers and the intermediate guide roller to rotate and the rotation direction of the intermediate guide roller is opposite to the rotation direction of the pair of side guide rollers, and the height position of the rotation axes of the pair of side guide rollers is higher than the height position of the rotation axis of the intermediate guide roller.

[0013] By adopting the above technical solution, the copper foil strip passes through the side guide roller on one side, the intermediate guide roller and the side guide roller on the other side in sequence, and the path of the copper foil strip in the guide roller mechanism is in a W shape. In this way, it is not easy to accidentally turn over during the long-distance movement of the copper foil strip, and at the same time, it is beneficial to tension and straighten the copper foil strip, and avoid scratching of the copper foil strip with the upper electroplating tin assembly and the lower electroplating tin assembly.

[0014] Optionally, a limiting ring groove surrounding the side guide roller for one week is provided on the outer peripheral side of the side guide roller, and the limiting ring groove is used to position the copper foil strip during the conveying process, and a plurality of limiting ring grooves are arranged along the axial direction of the side guide roller.

[0015] By adopting the above technical solution, the limiting ring groove can keep the distance between the copper foil strips when conveying multiple copper foil strips side by side, and avoid damage to the tin plating caused by mutual contact and collision.

[0016] Optionally, the unwinding device includes a plurality of unwinding support plates; a winding rotating shaft for positioning the copper foil strip reel is provided on one side of the unwinding support plate, and the winding rotating shaft is horizontally arranged for vertically installing the copper foil strip reel; all the unwinding support plates are arranged side by side horizontally to enable all copper foil strips to be conveyed side by side. The winding device includes a plurality of winding support plates; a winding rotating shaft for positioning the copper foil strip reel is provided on one side of the winding support plate, and the winding rotating shaft is horizontally arranged for vertically installing the copper foil strip reel; the winding support plates are arranged side by side horizontally and correspond to the unwinding support plates one by one, so that multiple copper foil strips are conveyed side by side horizontally for electroplating.

[0017] By adopting the above technical solution, multiple wire-let-off support plates rotatably support the copper foil reels, which is beneficial to tin plating multiple copper foil strips simultaneously, greatly improving the processing efficiency of tin plating. While completing the tin plating process for multiple copper foil strips, the wire let-off and wire take-up can correspond one by one, thus facilitating the orderly production and improving the production efficiency.

[0018] Optionally, all the unwinding rotating shafts and winding rotating shafts face the same side relative to the tin plating bracket, and all the wire-let-off support plates and all the wire take-up support plates are staggered in sequence along the conveying direction of the copper foil strip.

[0019] By adopting the above technical solution, there is no obstruction during the loading and unloading of the copper foil reels, which is beneficial to the loading and unloading of the copper foil strip.

[0020] Optionally, the tin plating device further includes a pre-cleaning mechanism, a post-cleaning mechanism, a sealant coating mechanism, and a drying mechanism; the copper foil strip sequentially passes through the pre-cleaning mechanism, several lower electro-tin plating assemblies, the flipping device, several upper electro-tin plating assemblies, the post-cleaning mechanism, the sealant coating mechanism, and the drying mechanism.

[0021] By adopting the above technical solution, the copper foil strip is cleaned before electroplating, thereby improving the quality of electroplating; after electroplating is completed, sealant coating is performed, improving the conductive stability of the tin-plated copper foil strip.

[0022] A method for producing matte electro-tin plated thin copper foil is realized by using the above-mentioned matte electro-tin plated thin copper foil production equipment; specifically, it includes the following steps:

[0023] Step S001, the wire-let-off device unwinds the copper foil strip;

[0024] Step S002, the copper foil strip is pre-cleaned by the pre-cleaning mechanism;

[0025] Step S003, the copper foil strip is electro-tin plated by the lower electro-tin plating assembly;

[0026] Step S004, the copper foil strip is turned over and folded back by the flipping device;

[0027] Step S005, the copper foil strip is electro-tin plated by the upper electro-tin plating assembly;

[0028] Step S006, the copper foil strip is cleaned by the post-cleaning mechanism;

[0029] Step S007, the copper foil strip is coated with a sealant by the sealant coating mechanism;

[0030] Step S008, the copper foil strip is dried by the drying mechanism;

[0031] Step S009, the wire take-up device winds up the copper foil strip.

[0032] By adopting the above technical solution, the path of the copper foil strip is in a lying U shape, greatly shortening the length of the production line, reducing the floor area, being adaptable to a relatively small workshop, and saving the production cost; since the loading of the copper foil strip and the unloading of the tinned copper foil are on the same side of the tin plating bracket, it is convenient for the operator to operate, saving time and effort.

[0033] Optionally, in step S002, the pre-cleaning mechanism includes a first pre-cleaning water tank, a second pre-cleaning water tank, a third pre-cleaning water tank, and a fourth pre-cleaning water tank that are sequentially distributed along the conveying direction of the copper foil strip; wherein the first pre-cleaning water tank is used for electrolytic cleaning; the second pre-cleaning water tank is used for water washing; the third pre-cleaning water tank is used for pickling; the fourth pre-cleaning water tank is used for ultrasonic water washing.

[0034] By adopting the above technical solution, the copper foil strip is electrolytically cleaned in the first pre-cleaning water tank to remove surface dirt, the previous electrolyte is washed off in the second pre-cleaning water tank, the grease is washed in the third pre-cleaning water tank, and the cleaning effect is enhanced by ultrasonic water washing in the fourth pre-cleaning water tank. Description of the Drawings

[0035] Figure 1 is a schematic structural diagram of the present invention.

[0036] Figure 2 is a schematic structural diagram of the wire pay-off device, the traction device, and the wire take-up device of the present invention.

[0037] Figure 3 is a schematic structural diagram of the rear end of the tin plating bracket of the present invention.

[0038] Figure 4 is a schematic rear view structural diagram of the present invention with the tin plating bracket omitted.

[0039] Figure 5 is a schematic structural diagram of the connection between the flipping device and the tin plating bracket of the present invention.

[0040] Figure 6 is of the present invention Figure 1 schematic enlarged structural diagram of part A.

[0041] Figure 7 is a schematic structural diagram of the guiding mechanism of the present invention.

[0042] Figure 8 is of the present invention Figure 1 schematic enlarged structural diagram of part B.

[0043] Figure 9 is a schematic structural diagram of the guide roller mechanism of the present invention. Detailed Embodiments

[0044] The following further describes the present invention in detail with reference to the accompanying Figure 1-9 drawings.

[0045] The present invention discloses a production device for matte electroplated tin thin copper foil. Referring to Figure 1 , it includes a wire pay-off device 10, a tin plating support 100, a tin plating device, a flipping device 40 and a wire winding device 90; the tin plating device includes a pre-cleaning mechanism 20, a pair of tin plating mechanisms 30, a post-cleaning mechanism 50, a sealant coating mechanism 60 and a drying device 70; the pre-cleaning mechanism 20, the pair of tin plating mechanisms 30, the post-cleaning mechanism 50, the sealant coating mechanism 60 and the drying device 70 are all arranged on the tin plating support 100; the tin plating mechanism 30 includes an upper electroplating tin assembly 31, a lower electroplating tin assembly 32, an electroplating solution storage tank 33 and an electroplating solution circulation assembly; the upper electroplating tin assembly 31, the lower electroplating tin assembly 32 and the electroplating solution storage tank 33 are distributed from top to bottom; the electroplating solution in the upper electroplating tin assembly 31 and the lower electroplating tin assembly 32 flows down into the electroplating solution storage tank 33; the electroplating solution circulation assembly filters the electroplating solution in the electroplating solution storage tank 33 and then reinjects it into the upper electroplating tin assembly 31 and the lower electroplating tin assembly 32; the wire winding device 90 and the wire pay-off device 10 are located on the same side of the tin plating support 100; the flipping device 40 is arranged on the side of the tin plating support 100 away from the wire winding device 90 and the wire pay-off device 10; the height position of the flipping device 40 is between the upper electroplating tin assembly 31 and the lower electroplating tin assembly 32; the copper foil strip leaves the wire pay-off device 10, then passes through the pre-cleaning mechanism 20 and the lower electroplating tin assembly 32 in sequence, then passes through the flipping device 40 to complete a U-turn, then passes through the upper electroplating tin assembly 31, the post-cleaning mechanism 50, the sealant coating mechanism 60 and the drying device 70 in sequence, and finally reaches the wire winding device 90 for wire winding.

[0046] Referring to Figure 2 , the wire pay-off device 10 includes a wire pay-off support 11 and a plurality of wire pay-off mechanisms 12 evenly distributed along the conveying direction of the copper foil strip; the wire pay-off mechanisms 12 are fixed on the wire pay-off support 11; the wire pay-off mechanisms 12 are used for vertically installing copper foil reels. More specifically, the wire pay-off mechanism 12 includes a wire pay-off support plate 121 fixed on the wire pay-off support 11 and a reel shaft 122 rotatably connected to one side of the wire pay-off support plate 121; the reel shaft 122 is horizontally arranged for vertically installing the copper foil reel, that is, the axis of the copper foil reel after installation is horizontal, so that the copper foil reel is unwound flat with a wider surface. In order to facilitate the installation and disassembly of the copper foil reel, all the wire pay-off support plates are arranged side by side horizontally, so that all the copper foil strips are output side by side. Also referring to Figure 2The wire-taking device 90 includes a wire-taking support 91 and a plurality of wire-taking mechanisms 92 evenly distributed along the conveying direction of the copper foil tape; the wire-taking mechanism 92 is fixed on the wire-taking support 91; the wire-taking mechanism 92 is used to vertically install the winding reel and drive the winding reel to rotate; the wire-taking support plates are arranged side by side horizontally and correspond to the wire-releasing support plates one by one so that multiple copper foil tapes are transported side by side horizontally for electroplating. The copper foil tape leaves the wire-releasing mechanism 12 and is finally wound on the corresponding wire-taking mechanism 92. More specifically, the wire-taking mechanism 92 includes a wire-taking support plate 921 fixed on the wire-taking support 91, a winding shaft 923 rotatably connected to the wire-taking support plate 921, and a wire-taking motor 922 fixed on the wire-taking support 91; the winding shaft 923 is horizontally arranged for vertically installing the copper foil tape reel; the output shaft of the wire-taking motor 922 is coaxially and fixedly connected to the winding shaft 923.

[0047] In order to facilitate workers to operate the copper foil reel, all unwinding shafts and rewinding shafts can be designed to face the same side relative to the tinned bracket, and all the unwinding support plates and all the rewinding support plates are staggered in sequence along the conveying direction of the copper foil. There is no obstruction in the axial direction of each copper foil reel, and it is very convenient to install and disassemble.

[0048] refer to Figure 1 The pre-cleaning mechanism 20 includes a first pre-cleaning water tank 21, a second pre-cleaning water tank 22, a third pre-cleaning water tank 23 and a fourth pre-cleaning water tank 24 which are sequentially distributed along the conveying direction of the copper foil strip; the first pre-cleaning water tank 21 is filled with electrolyte, at which time the copper foil strip is connected to the positive electrode, and the first pre-cleaning water tank 21 is provided with an electrode plate connected to the negative electrode, at which time the copper ions on the surface of the copper foil strip are ionized to remove the dirt on the surface; the second pre-cleaning water tank 22 is filled with water; the third pre-cleaning water tank 2 is filled with a strong acid solution; the fourth pre-cleaning water tank 24 is filled with water and an ultrasonic generator is installed at the bottom.

[0049] For recycling, an electrolyte storage tank, a pickling storage tank, and a water washing storage tank are respectively fixed on the tin-plated bracket 100; circulating pumps are arranged on the outer sides of the electrolyte storage tank, the pickling storage tank, and the water washing storage tank; pipelines are connected to the bottoms of the electrolyte storage tank, the pickling storage tank, and the water washing storage tank, and the other ends of these pipelines are connected to the liquid inlet ends of their respective circulating pumps; pipelines are connected to the first pre-washing water tank 21, the third pre-washing water tank 23, and the fourth pre-washing water tank 24, and the other ends of these pipelines are connected to the liquid outlet ends of their respective circulating pumps, and valves are installed on these pipelines. There is a pipeline between the second pre-washing water tank 22 and the fourth pre-washing water tank 24, and there is a pipeline between the second pre-washing water tank 22 and the water washing storage tank, so that the water in the water washing storage tank will sequentially pass through the fourth pre-washing water tank 24 and the second pre-washing water tank 22 and then return to the water washing storage tank. The reason why the water first flows through the fourth pre-washing water tank 24 and then through the second pre-washing water tank 22 is that the second pre-washing water tank 22, as the first stage of water washing, removes the most impurities, while the fourth pre-washing water tank 24, as the second stage of water washing, removes fewer impurities than the first stage of water washing. The water after the second stage of water washing is relatively cleaner than the water after the first stage of water washing. The water after the second stage of water washing is reused for the first stage of water washing, which does not affect the effect of the first stage of water washing and improves the utilization rate of water resources at the same time.

[0050] For the filtration of electrolyte, pickling solution, and water, a sewage discharge pipe is fixed on the tin-plated bracket 100; three sewage discharge branch pipes are connected to the sewage discharge pipe; the three sewage discharge branch pipes are respectively connected to the bottoms of the electrolyte storage tank, the pickling storage tank, and the water washing storage tank, and valves are respectively installed on the three sewage discharge branch pipes.

[0051] For the replenishment of electrolyte, pickling solution, and water, three liquid replenishment pipes are fixed on the tin-plated bracket 100; the three liquid replenishment pipes are respectively used for the replenishment of electrolyte, pickling solution, and water; the other ends of the three liquid replenishment pipes are respectively connected to liquid replenishment branch pipes, and the other ends are respectively connected to their respective liquid replenishment devices; the other ends of the three liquid replenishment branch pipes are respectively connected to the first pre-washing water tank 21, the third pre-washing water tank 23, and the fourth pre-washing water tank 24; valves are installed on the liquid replenishment branch pipes.

[0052] Reference Figure 3 Referring to

[0053] Reference Figure 3, baffles are fixed at both ends of the electroplating tank; a number of U-shaped copper foil strip passing grooves are formed on the upper end surface of the baffle and are evenly distributed in the vertical direction along the copper foil strip conveying direction; three vertically opening water drainage holes are formed on the lower side wall of the electroplating tank; two of the water drainage holes are located outside a pair of baffles, and the other water drainage hole is located in the middle of the electroplating tank; a drainage valve is fixed on the bottom surface of the electroplating tank; the drainage valve is used to open and close the middle water drainage hole; in the normal working state, the drainage valve is in the closed state; when it is necessary to drain all the electroplating solution in the electroplating tank, the drainage valve can be opened.

[0054] Reference Figure 4 , the electroplating solution circulation assembly includes an electroplating solution circulation pump 34 and a filter; the liquid outlet end of the electroplating solution circulation pump 34 is connected with an electroplating solution outlet pipe 36, and the liquid inlet end is connected with an electroplating solution inlet pipe 35; the liquid inlet end of the filter is connected with a circulation inlet pipe 37; the other end of the circulation inlet pipe 37 is connected with the bottom of the electroplating solution storage tank 33; a circulation valve 371 is connected to the part of the circulation inlet pipe 37 close to the electroplating solution storage tank 33; the other end of the electroplating solution inlet pipe 35 is connected with the liquid outlet end of the filter.

[0055] Reference Figure 4 , the electroplating solution outlet pipe 36 includes an electroplating solution outlet main pipe 361 connected to the liquid outlet end of the electroplating solution circulation pump 34 and a pair of electroplating solution outlet branch pipes 362 connected to the electroplating solution outlet main pipe 361; the other ends of the pair of electroplating solution outlet branch pipes 362 are respectively connected to the electroplating tanks of the upper electroplating tin assembly 31 and the lower electroplating tin assembly 32; liquid outlet valves 363 are connected to both of the pair of electroplating solution outlet branch pipes 362.

[0056] During electroplating solution circulation, the electroplating solution in the electroplating solution storage tank 33 enters the filter through the circulation inlet pipe 37, and after being filtered, it enters the electroplating tanks of the upper electroplating tin assembly 31 and the lower electroplating tin assembly 32 through the electroplating solution inlet pipe 35, the electroplating solution circulation pump 34 and the electroplating solution outlet pipe 36, and then flows back into the electroplating solution storage tank 33 through the water drainage holes at the bottom of the electroplating tank; when it is not necessary for the upper electroplating tin assembly 31 to perform tin plating, the liquid outlet valve 363 of the electroplating solution outlet branch pipe 362 connected to the electroplating tank of the upper electroplating tin assembly 31 can be closed, so that the circulated electroplating solution cannot reach the electroplating tank of the upper electroplating tin assembly 31, and since the two water drainage holes of the electroplating tank of the upper electroplating tin assembly 31 are in the normally open state, the electroplating tank of the upper electroplating tin assembly 31 will be drained, so it does not participate in tin plating. The same principle applies to the lower electroplating tin assembly 32.

[0057] Reference Figure 5, the turning device 40 includes a turning roller 42 rotatably connected to the tin plating bracket 100 and a turning roller driving mechanism for driving the turning roller 42; the turning roller driving mechanism includes a turning servo motor 41 and a turning transmission assembly arranged between the output shaft of the turning servo motor 41 and the rotating shaft of the turning roller 42; the turning transmission assembly can be a sprocket chain transmission structure or a gear transmission structure.

[0058] Reference Figure 1 , the post-cleaning mechanism 50 is water washing; the post-cleaning mechanism 50 includes a post-cleaning tank; water is filled in the post-cleaning tank; a branch pipe is branched out from the pipeline connected to the liquid outlet end of the circulation pump corresponding to the water washing temporary storage tank, and the other end of this branch pipe is connected to the upper part of the post-cleaning tank, and a valve is installed on the above-mentioned branch pipe; a pipeline is connected to the bottom of the post-cleaning tank, and this pipeline is connected to the upper part of the water washing temporary storage tank; so the water in the post-cleaning tank is pumped from the water washing temporary storage tank by the circulation pump corresponding to the water washing temporary storage tank and finally flows back to the water washing temporary storage tank.

[0059] Reference Figure 1 , the sealant coating mechanism 60 includes a sealant tank, a sealant temporary storage tank and a sealant circulation assembly; the sealant tank and the sealant temporary storage tank are fixed on the tin plating bracket 100; sealant is contained in the sealant tank; the sealant circulation assembly includes a sealant circulation pump; the liquid inlet end of the sealant circulation pump is connected with a sealant circulation inlet pipe, and the liquid outlet end is connected with a sealant circulation outlet pipe; the other end of the sealant circulation inlet pipe is connected to the bottom of the sealant tank; the other end of the sealant circulation outlet pipe is connected to the upper part of the sealant tank, and a valve is installed on the sealant circulation outlet pipe; in addition, a sealant supplement pipe is fixed on the tin plating bracket 100; one end of the sealant supplement pipe is connected with a sealant supplement branch pipe, and the other end is connected with a sealant supplement device; the other end of the sealant supplement branch pipe is connected to the upper part of the sealant tank; a valve is installed on the sealant supplement branch pipe; at the same time, a sewage discharge pipe is also connected with a sewage discharge branch pipe connected to the bottom of the sealant temporary storage tank, and a valve is also installed on this sewage discharge branch pipe.

[0060] Working principle of the present invention: The copper foil strip starts from the copper foil strip reel on the unwinding rotating shaft 122, and successively passes through the first pre-cleaning water tank 21, the second pre-cleaning water tank 22, the third pre-cleaning water tank 23, and the fourth pre-cleaning water tank 24 for pre-cleaning to remove impurities on the copper foil strip. Then it passes through the guide roller mechanism 300, and then successively passes through a pair of lower electroplating tin assemblies 32 for electroplating; then it bypasses the flipping roller 42 for flipping and turning back; then it successively passes through a pair of upper electroplating tin assemblies 31 for electroplating, and thus the tin plating of the copper foil strip is completed; then it passes through the post-cleaning mechanism 50 to remove the electroplating solution; then it passes through the sealant coating mechanism 60 for sealant coating; then it passes through the drying device 70 for drying, and finally winds onto the winding reel on the winding rotating shaft 923, and the finished product is wound with the rotating winding reel; of course, in order to control the thickness of the tin layer on the copper foil strip, it is possible to control whether the filtered electroplating solution enters or does not enter the electroplating tank of the upper electroplating tin assembly 31, so as to control whether the upper electroplating tin assembly 31 participates in electroplating, and thereby change the electroplating time of the copper foil sheet to control the thickness of the tin layer.

[0061] In order to better guide the simultaneous electroplating of multiple copper foil strips, the guide roller mechanism 300 can be added: Refer to Figure 3 , Figure 8 and Figure 9 , and further includes a pair of guide roller mechanisms 300, wherein one guide roller mechanism 300 is located on one side of the upper electroplating tin assembly 31 of the tin plating mechanism 300 far from the flipping device 40; the other guide roller mechanism 300 is located on one side of the lower electroplating tin assembly 32 of the tin plating mechanism 300 far from the flipping device 40; the guide roller mechanism 300 is used to tension the copper foil strip. The guide roller mechanism 300 can be reasonably arranged between two adjacent upper electroplating tin assemblies and between two adjacent lower electroplating tin assemblies as needed.

[0062] Refer to Figure 9 , the guide roller mechanism 300 includes a pair of side guide rollers 302, an intermediate guide roller 304, and a driving component; a pair of side guide rollers 302 and the intermediate guide roller 304 are both rotatably connected to the tin plating bracket 100 and their axial directions are perpendicular to the conveying direction of the copper foil strip; the intermediate guide roller 304 is located between the pair of side guide rollers 302; the driving component is used to drive the pair of side guide rollers 302 and the intermediate guide roller 304 to rotate and the rotation direction of the intermediate guide roller 304 is opposite to the rotation direction of the pair of side guide rollers 302; a plurality of annular groove-shaped limiting ring grooves 3020 are formed on the side guide rollers 302 and are uniformly distributed along their axial directions.

[0063] Refer to Figure 9, the driving assembly includes a servo driving motor 301 fixed on the tin-plated bracket 100, a driving gear coaxially fixed on the output shaft of the servo driving motor 301, a driven gear 303 coaxially fixed on the end of the side guide roller 302, and an intermediate gear 305 coaxially fixed on the end of the intermediate guide roller 304; the driving gear meshes with one of the driven gears 303; the intermediate gear 305 is located between a pair of driven gears 303 and meshes with the pair of driven gears 303 respectively.

[0064] In one embodiment, a guiding mechanism 200 and a wire-collecting guiding roller 101 are arranged at one end of the tin-plated bracket 100 close to the wire pay-off device 10, and the guiding mechanism 200 is arranged between the first pre-cleaning water tank 21 and the second pre-cleaning water tank 22.

[0065] Reference Figure 6 , the wire-collecting guiding roller 101 is rotatably connected to the tin-plated bracket 100 and is located on the side of the drying device 70 close to the wire-collecting device 90.

[0066] Reference Figure 7 , the guiding mechanism 200 includes an intermediate guiding roller 202 and a pair of side guiding rollers 201; the intermediate guiding roller 202 and the pair of side guiding rollers 201 are both rotatably connected to the tin-plated bracket 100 and the axial directions of the three are perpendicular to the conveying direction of the copper foil strip; the intermediate guiding roller 202 and the pair of side guiding rollers 201 are distributed along the conveying direction of the copper foil strip and the intermediate guiding roller 202 is located between the pair of side guiding rollers 201.

[0067] In one embodiment, a traction device 80 can be arranged between the wire pay-off device 10 and the wire-collecting device 90; the traction device 80 includes a support base 81, a pair of traction cylinders 82 distributed up and down, and a traction driving mechanism arranged in the support base 81; the pair of traction cylinders 82 are rotatably connected to the support base 81; the traction driving mechanism can be a pair of motors respectively driving the pair of traction cylinders 82 to rotate, or can be a motor and a gear transmission structure; the traction driving mechanism drives the pair of traction cylinders 82 to rotate in opposite directions, and multiple copper foil strips sequentially bypass the pair of traction cylinders 82 from bottom to top along an S-shaped path.

[0068] In one embodiment, air-blowing assemblies are provided between the pre-cleaning mechanism 20 and the tin plating device, between the tin plating device and the post-cleaning mechanism 50, between the post-cleaning mechanism 50 and the sealant coating mechanism 60, and between the sealant coating mechanism 60 and the drying device 70; the air-blowing assembly includes an air-blowing pipe with a hollow interior and a blower; the air-blowing pipe is fixed on the tin plating bracket 100; the axial direction of the air-blowing pipe is horizontally arranged and perpendicular to the conveying direction of the copper foil strip; the air-blowing pipe is formed with radially penetrating radial perforations for multiple copper foil strips to horizontally pass through simultaneously; one axial end of the air-blowing pipe is formed with an axially penetrating air inlet hole; the air outlet of the blower is connected to one end of the air inlet hole of the air-blowing pipe through a ventilation pipe; in this way, the air generated by the blower enters the air-blowing pipe through the air inlet hole and then is discharged from both openings of the radial perforations, so as to contact and carry away the residual liquid on the copper foil strip.

[0069] In addition, the present invention also provides a method for producing a matte electroplated tin thin copper foil, which is realized by using the above-mentioned matte electroplated tin thin copper foil production equipment; specifically, it includes the following steps:

[0070] Step S001, the wire pay-off device 10 pays off the copper foil strip.

[0071] Step S002, the copper foil strip is pre-cleaned by the pre-cleaning mechanism 20.

[0072] Step S003, the copper foil strip is electroplated with tin by the tin plating device.

[0073] Step S004, the copper foil strip is turned over and folded back by the turning device 40.

[0074] Step S005, the copper foil strip is electroplated with tin by the tin plating device.

[0075] Step S006, the copper foil strip is cleaned by the post-cleaning mechanism 50.

[0076] Step S007, the copper foil strip is coated with a sealant by the sealant coating mechanism 60.

[0077] Step S008, the copper foil strip is dried by the drying mechanism 70 after the sealant is coated.

[0078] Step S009, the wire take-up device 90 takes up the copper foil strip.

[0079] To improve the cleaning effect, optionally, in step S002, the pre-cleaning mechanism includes a first pre-cleaning water tank, a second pre-cleaning water tank, a third pre-cleaning water tank, and a fourth pre-cleaning water tank that are sequentially distributed along the conveying direction of the copper foil strip; wherein the first pre-cleaning water tank is used for electrolytic cleaning; the second pre-cleaning water tank is used for water washing; the third pre-cleaning water tank is used for pickling; the fourth pre-cleaning water tank is used for ultrasonic water washing. The copper foil strip removes the dirt on the surface through electrolytic cleaning in the first pre-cleaning water tank, washes off the previous electrolyte through the second pre-cleaning water tank, washes off the grease through the third pre-cleaning water tank, and strengthens the cleaning effect through ultrasonic water washing in the fourth pre-cleaning water tank.

[0080] In the present invention, a layer of fine particles is deposited on the surface of the tin material, thereby increasing the surface roughness, forming a matte tin coating with higher adhesion and more uniform thickness distribution, reducing problems such as uneven distribution, blistering, and cracking of the tin coating, having no pinholes on the surface, and making the tin coating more complete. The matte tin coating has good corrosion resistance, can protect the copper foil substrate from being corroded, oxidized, etc. The surface of the matte tin coating has a certain roughness, and is easier to process and form compared to ordinary tin materials, with good electrical conductivity, solderability, and high flexibility.

[0081] The products produced by the present invention can be used for heating components in automotive glass and special glass. Due to lead-free electroplating, the welding process is clean and more environmentally friendly, and it is also beneficial to improve the welding effect.

[0082] The above are all preferred embodiments of the present invention, and the protection scope of the present invention is not limited thereby. Therefore, all equivalent changes made according to the structure, shape, and principle of the present invention should be covered within the protection scope of the present invention.

Claims

1. A production device for matte electroplated tin thin copper foil, comprising a wire pay-off device, a tin plating support, a tin plating device and a wire take-up device; The tin plating device is arranged on the tin plating support; It is characterized in that: It further includes a turning device; the turning device is arranged at one end of the tin plating support and is used to guide the copper foil strip to turn back; both the wire take-up device and the wire pay-off device are located on the side of the tin plating support away from the turning device; The tin plating device includes a tin plating mechanism arranged along the length direction of the tin plating support; the tin plating mechanism includes an upper electroplating tin assembly and a lower electroplating tin assembly; the upper electroplating tin assembly is located above the lower electroplating tin assembly; the height position of the turning device is between the upper electroplating tin assembly and the lower electroplating tin assembly; The copper foil strip sequentially passes through the wire pay-off device, the lower electroplating tin assembly, the turning device, the upper electroplating tin assembly and the wire take-up device.

2. The production equipment of a matte electroplated tin thin copper foil according to claim 1, characterized in that: The tin plating mechanism further includes an electroplating solution temporary storage tank and an electroplating solution circulation assembly located below the lower electroplating tin assembly; the electroplating solution in the upper electroplating tin assembly and the lower electroplating tin assembly flows down into the electroplating solution temporary storage tank; the electroplating solution circulation assembly filters the electroplating solution in the electroplating solution temporary storage tank and then reinjects it into the upper electroplating tin assembly and the lower electroplating tin assembly.

3. The production equipment of a matte electroplated tin thin copper foil according to claim 2, characterized in that: The electroplating solution circulation assembly includes an electroplating solution circulation pump; the liquid outlet end of the electroplating solution circulation pump is connected with an electroplating solution outlet pipe; the electroplating solution outlet pipe includes electroplating solution outlet branch pipes connected to the upper electroplating tin assembly and the lower electroplating tin assembly; liquid outlet valves are arranged on the electroplating solution outlet branch pipes.

4. A matte electroplated tin thin copper foil production device according to claim 1, characterized in that: Both the upper electroplating tin assembly and the lower electroplating tin assembly are provided with a plurality of them. The tin plating mechanism includes a guide roller mechanism, and the guide roller mechanism is arranged between two adjacent upper electroplating tin assemblies and between two adjacent lower electroplating tin assemblies; the guide roller mechanism includes a pair of side guide rollers, an intermediate guide roller and a driving component; the intermediate guide roller is located between the pair of side guide rollers; the driving component is used to drive the side guide rollers and the intermediate guide roller to rotate and the rotation direction of the intermediate guide roller is opposite to the rotation direction of the pair of side guide rollers, and the height position of the rotation axes of the pair of side guide rollers is higher than the height position of the rotation axis of the intermediate guide roller.

5. The production equipment for matte electroplated tin thin copper foil according to claim 4, characterized in that: The outer peripheral side surface of the side guide roller is provided with a limiting ring groove surrounding the side guide roller for positioning the copper foil strip during transportation, and a plurality of the limiting ring grooves are arranged along the axial direction of the side guide roller.

6. A production device for matte electroplated tin thin copper foil according to claim 1, characterized in that: The wire pay-off device includes a plurality of wire pay-off support plates; a winding shaft for positioning the copper foil strip coil is arranged on one side of the wire pay-off support plate, and the winding shaft is horizontally arranged for vertically installing the copper foil strip coil. All the wire pay-off support plates are arranged side by side horizontally so that all the copper foil strips are output side by side; the wire take-up device includes a plurality of wire take-up support plates; a winding shaft for positioning the copper foil strip coil is arranged on one side of the wire take-up support plate, and the winding shaft is horizontally arranged for vertically installing the copper foil strip coil; the wire take-up support plates are arranged side by side horizontally and correspond one by one to the wire pay-off support plates so that multiple copper foil strips are transported side by side horizontally for electroplating.

7. The production equipment for matte electroplated tin thin copper foil according to claim 6, wherein: All unwinding rotating shafts and winding rotating shafts face the same side relative to the tin-plating bracket, and all the wire-let-off support plates and all the wire-winding support plates are staggered in sequence along the conveying direction of the copper foil strip.

8. A matte electroplated tin thin copper foil production device according to any one of claims 1 to 7, characterized in that: The tin-plating device further includes a pre-cleaning mechanism, a post-cleaning mechanism, a sealant coating mechanism, and a drying mechanism; the copper foil strip sequentially passes through the pre-cleaning mechanism, several of the lower tin-plating assemblies, the flipping device, several of the upper tin-plating assemblies, the post-cleaning mechanism, the sealant coating mechanism, and the drying mechanism.

9. A production method of matte electroplated tin thin copper foil, characterized in that: It is realized by using the matte tin-plated thin copper foil production equipment according to Claim 8; Specifically, it includes the following steps: Step S001, the wire-let-off device unwinds the copper foil strip; Step S002, the copper foil strip is pre-cleaned by the pre-cleaning mechanism; Step S003, the copper foil strip is tin-plated by the lower tin-plating assembly; Step S004, the copper foil strip is turned over and folded back by the flipping device; Step S005, the copper foil strip is tin-plated by the upper tin-plating assembly; Step S006, the copper foil strip is cleaned by the post-cleaning mechanism; Step S007, the copper foil strip is coated with a sealant by the sealant coating mechanism; Step S008, the copper foil strip is dried by the drying mechanism; Step S009, the wire-winding device winds up the copper foil strip.

10. A method for producing a matte electroplated tin thin copper foil according to claim 9, characterized in that: In Step S002, the pre-cleaning mechanism includes a first pre-cleaning water tank, a second pre-cleaning water tank, a third pre-cleaning water tank, and a fourth pre-cleaning water tank that are sequentially distributed along the conveying direction of the copper foil strip; wherein the first pre-cleaning water tank is used for electrolytic cleaning; the second pre-cleaning water tank is used for water washing; the third pre-cleaning water tank is used for pickling; the fourth pre-cleaning water tank is used for ultrasonic water washing.

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