A tinning device and system for copper busbar

Abstract

The present invention belongs to the technical field of tinning of copper busbars, and specifically relates to a tinning device and system for copper busbars. The tinning device includes a conveying device for conveying the copper busbar, a tinning device for plating the copper busbar, and an induction switch, which are connected in sequence. The device cooperates with the tinning device, the conveying device, and the induction switch. When the copper busbar is conveyed to the induction switch, the second rubber wheel in the conveying device abuts against the surface of the copper busbar, so that the copper busbar is connected to the power supply, ensuring that the copper busbar is connected to the power supply during the tinning process. When the copper busbar leaves the tinning process, the second rubber wheel in the conveying device separates from the copper busbar, so that the copper busbar is disconnected from the power supply and is no longer energized, thereby improving the safety of operation and reducing the risk of electric injury; at the same time, in the device, the copper busbar is not energized after leaving the device and entering other processing processes, which can reduce the consumption of electric energy and achieve the effect of saving electric energy.

Description

Technical Field

[0001] The invention belongs to the technical field of tinning of copper busbars, and in particular relates to a tinning device and system for a copper busbar. Background Art

[0002] Copper busbar (also known as copper busbar) is a conductive connection carrier widely used in electrical, power, electrical and other industrial fields. The working environment of copper busbar is mostly outdoors or in factory workshops. These environments often have a lot of water vapor and condensation, which can easily cause oxidation and corrosion of copper busbar. In order to prevent oxidation of copper busbar and ensure conductivity, the surface or connection parts of copper busbar are often tinned, and a thin layer of tin is evenly plated on the surface of copper busbar.

[0003] However, the existing copper busbar tinning technology has the following problems: first, the electrolyte used has environmental problems and has a strong odor; second, the traditional tinning technology mostly uses static hanging plating, which has low plating efficiency and slow production speed. The production line can only produce 1-2 tons per day; third, the traditional tinning technology cannot be fully automated on the assembly line, and the labor intensity of workers is high.

[0004] Chinese patent document CN107245750A discloses a continuous tinning production line for copper bars, which has a feeding and conveying part, a tinning part and a feeding and stacking part arranged from left to right in sequence; an exhaust gas suction pipe is installed at the upper end of the tinning part, and the exhaust gas suction pipe is connected to the exhaust gas treatment tower and is purified; a waste water pipe is installed at the lower end of the tinning part, and the waste water pipe is connected to the water treatment system and is purified. In this patent, the passive feeding device is connected to the cathode plate and allows the copper bar passing through to carry the cathode current. The cathode plate is connected to the cathode of the power supply. When the copper bar is delivered, it directly conducts electricity and also becomes the cathode; the passive feeding device is connected to the cathode plate during the entire tinning process. When the copper bar is not subjected to the tinning process and undergoes other treatments, it is also connected to the cathode plate, which increases the energy consumption of the production line, and is prone to electric damage, reducing the safety of operation; in addition, the power supply and the copper busbar in the tinning device are prone to poor contact, and the tinning efficiency is low, resulting in a long production cycle. Summary of the invention

[0005] Therefore, the technical problem to be solved by the present invention is to overcome the defects of the prior art such as low tinning efficiency and long production cycle of the copper busbar, and the fact that the copper busbar is still connected to the power supply after leaving the tinning treatment process and is prone to safety accidents, thereby providing a tinning device and system for the copper busbar.

[0006] To this end, the present invention provides the following technical solutions.

[0007] The present invention provides a tinning device for a copper busbar, comprising:

[0008] A conveying device for conveying the copper busbar and a tinning device for tinning the copper busbar, which are connected in sequence;

[0009] The conveying device comprises a first rubber wheel, a conductive rotating shaft and a second rubber wheel, wherein the first rubber wheel is used to convey the copper busbar placed on the first rubber wheel; the conductive rotating shaft is spaced apart from the first rubber wheel; the second rubber wheel is fixedly connected to the conductive rotating shaft and can approach or move away from the first rubber wheel as the conductive rotating shaft rotates, and the second rubber wheel can abut against the surface of the copper busbar as the conductive rotating shaft rotates;

[0010] The induction switch is arranged between the conveying device and the tinning device and is interlocked with the conveying device to maintain or disconnect the electrical connection between the copper busbar and the conveying device.

[0011] The tinning device comprises:

[0012] An upper tin tank for containing electrolyte and a plurality of support units arranged therein at intervals for supporting the copper busbar;

[0013] The tin plate is arranged on at least one side of the copper busbar on the supporting unit and is spaced apart from the copper busbar.

[0014] The tin plate is composed of a first tin plate and a second tin plate, wherein the first tin plate is arranged near the bottom of the upper tin tank, and the second tin plate is arranged near the top of the upper tin tank, and when the copper busbar is transferred to the supporting unit, the copper busbar is located between the first tin plate and the second tin plate; and / or,

[0015] The supporting unit is a supporting roller.

[0016] The tinning device also includes a tinning unit containing electrolyte and a purification unit for purifying the electrolyte after reaction. The tinning unit is connected to the tinning tank and the purification unit respectively, and the purification unit is connected to an overflow tank arranged on one side of the tinning tank.

[0017] The transmission device further comprises:

[0018] The elastic conductive component is arranged on the conductive rotating shaft and has a plurality of abutment parts which can be close to or away from the first rubber wheel as the conductive rotating shaft rotates, and the abutment parts can abut against the corresponding copper busbar surface as the conductive rotating shaft rotates.

[0019] Furthermore, the elastic conductive member assembly includes a plurality of conductive springs arranged at intervals along the axial direction of the conductive rotating shaft, and,

[0020] The conductive wheel is arranged at the end of the conductive spring sheet and serves as the abutment portion.

[0021] The conductive rotating shaft is arranged parallel to the first rubber wheel;

[0022] The conductive spring is perpendicular to the conductive rotation axis; and / or,

[0023] The number of the abutting portions corresponds one to one to the number of the copper busbars.

[0024] The conductive wheel and / or the second rubber wheel are filled with conductive fluid;

[0025] Preferably, the conductive fluid is a low melting point alloy;

[0026] Preferably, the low melting point alloy is an indium gallium alloy or an indium gallium tin alloy.

[0027] The conveying device also includes a conductive support assembly;

[0028] The conductive support assembly includes a first conductive support member and a second conductive support member, wherein the first conductive support member is disposed on the conductive rotating shaft near both ends thereof and is used to fix both ends of the second rubber wheel;

[0029] The second conductive support member is connected to the first conductive support members at both ends of the second rubber wheel and fixed thereon, and an elastic conductive member assembly is arranged on the second conductive support member;

[0030] Preferably, the first conductive support member and the second conductive support member are both made of conductive metal.

[0031] The first conductive support member is perpendicular to the conductive rotation axis;

[0032] The second conductive support member is perpendicular to the first conductive support member.

[0033] The transmission device further comprises:

[0034] A first power unit is fixedly connected to the conductive shaft, and the conductive shaft is driven to rotate by the first power unit;

[0035] A power source connected to the conductive shaft;

[0036] The second power unit is connected to the first rubber wheel, and the first rubber wheel is driven to rotate by the second power unit.

[0037] The first power unit is a cylinder; the second power unit is a reduction motor, and the reduction motor drives the first rubber wheel to rotate through gears that mesh with each other.

[0038] The conductive spring piece includes a first connecting section and a second connecting section connected in sequence. When the abutting portion abuts against the surface of the corresponding copper busbar, the first connecting section is inclined relative to the copper busbar, and the second connecting section is parallel to the copper busbar.

[0039] The present invention also provides a tinning system for a copper busbar, comprising at least two tinning devices for the copper busbars which are sequentially connected in series.

[0040] The technical solution of the present invention has the following advantages:

[0041] 1. The tinning device for a copper busbar provided by the present invention comprises a conveying device for conveying the copper busbar and a tinning device for tinning the copper busbar, which are connected in sequence; the conveying device comprises a first rubber wheel, a conductive rotating shaft and a second rubber wheel, the first rubber wheel is used to convey the copper busbar placed on the first rubber wheel; the conductive rotating shaft is spaced apart from the first rubber wheel; the second rubber wheel is fixedly connected to the conductive rotating shaft, and can approach or move away from the first rubber wheel as the conductive rotating shaft rotates, and the second rubber wheel can abut against the surface of the copper busbar as the conductive rotating shaft rotates; an induction switch is arranged between the conveying device and the tinning device, and is interlocked with the conveying device, and is used to maintain or disconnect the electrical connection between the copper busbar and the conveying device. The device cooperates with a tinning device, a conveying device and an induction switch. When the copper busbar is conveyed to the induction switch, the second rubber wheel in the conveying device abuts against the surface of the copper busbar, so that the copper busbar is connected to the power supply, ensuring that the copper busbar is connected to the power supply during the tinning process. When the copper busbar leaves the tinning process, the second rubber wheel in the conveying device separates from the copper busbar, so that the copper busbar is disconnected from the power supply and is no longer energized, thereby improving the safety of operation and reducing the risk of electric injury. At the same time, in the device, the copper busbar is not energized after leaving the device and entering other processing processes, which can reduce the consumption of electric energy and achieve the effect of saving electric energy.

[0042] 2. The tinning device for the copper busbar provided by the present invention is provided with a plurality of supporting units, which can provide supporting force for the copper busbar being transported, play a role in holding up the copper busbar, and make the copper busbar less likely to sag during the transportation process.

[0043] The first tin plate and the second tin plate are arranged in the tinning device, so that the two surfaces of the copper busbar can be tinned at the same time. At the same time, multiple tinning devices can be arranged in the tinning device, which improves the tinning efficiency and shortens the production cycle.

[0044] 3. The tinning device for a copper busbar provided by the present invention further comprises a tinning unit containing an electrolyte and a purification unit for purifying the electrolyte after the reaction. The tinning unit is respectively connected with a tinning tank and the purification unit to provide a tin-plating electrolyte for the tinning device. During the tinning process, in order to ensure the quality of the tin layer of the copper busbar, it is necessary to make the tin in the electrolyte evenly distributed. The tinning unit is connected with the tinning device so that the electrolyte can be replaced in time to ensure that the tin in the electrolyte in the tinning device is evenly distributed. At the same time, the purification unit is connected with an overflow tank on one side to recover the electrolyte overflowing from the tinning tank of the tinning device and the electrolyte brought out by the copper busbar.

[0045] 4. The tinning device for the copper busbar provided by the present invention, the conveying device also includes an elastic conductive part assembly, which is arranged on the conductive rotating shaft, and has a plurality of abutment parts that can approach or move away from the first rubber wheel as the conductive rotating shaft rotates, and the abutment parts can abut against the corresponding copper busbar surfaces as the conductive rotating shaft rotates. This method can make all the copper busbars connected to the power supply at the same time, and realize multi-point contact between the copper busbar and the abutment parts. Since the copper busbar is not absolutely flat, the multi-point contact between the copper busbar and the abutment parts can avoid the problem of poor contact of the copper busbar, and will not cause the problem of local excessive current and blackening of the copper busbar surface during the processing.

[0046] 5. The tin-coating device for the copper busbar provided by the present invention, the elastic conductive part assembly includes a plurality of conductive spring sheets arranged on the conductive rotating shaft at axial intervals, and a conductive wheel arranged at the end of the conductive spring sheet and serving as abutment; the conductive spring sheet has a good buffering effect, reduces the damage of the abutment, and increases the service life of the abutment.

[0047] Conductive fluid is arranged inside the conductive wheel and the second rubber wheel, and the current is better transmitted to the conductive wheel and the second rubber wheel through the copper shaft of the conductive wheel and the second rubber wheel. This method has the advantages of flexible rotation and efficient conduction. BRIEF DESCRIPTION OF THE DRAWINGS

[0048] In order to more clearly illustrate the specific implementation methods of the present invention or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0049] Figure 1 is a schematic diagram of the three-dimensional structure of the tinning device in Example 1 of the present invention;

[0050] Figure 2 is a front view of the tinning device in Embodiment 1 of the present invention;

[0051] Figure 3 is a top view of the tinning device in Embodiment 1 of the present invention;

[0052] Figure 4 It is a left view of an implementation of the conveying device in Example 1 of the present invention;

[0053] Figure 5 is a front structural cross-sectional view of an implementation of the conveying device in Example 1 of the present invention;

[0054] Figure 6 is a structural schematic diagram of another implementation mode of the conveying device in Example 1 of the present invention;

[0055] Figure 7 yes Figure 4 Right view of;

[0056] Figure 8 yes Figure 4 A front view of the structure section;

[0057] Fig. 9 yes Figure 4 A top view of

[0058] Fig.10 is a schematic structural diagram of a conductive wheel in a transmission device in Example 1 of the present invention;

[0059] Reference numerals:

[0060] 1-return pipe; 2-transmission device; 3-induction switch; 4-supporting roller; 5-water-blocking plate; 6-second tin plate; 7-first tin plate; 8-conductive bracket; 9-copper busbar; 10-purification pump; 11-circulation pump; 12-electrolyte storage tank; 13-overflow tank; 14-upper tin tank;

[0061] 2-1- cylinder force plate; 2-2- end of the conductive shaft; 2-3- cylinder; 2-4- conductive shaft; 2-5- first conductive support; 2-6- second conductive support; 2-7- second rubber wheel; 2-8- first rubber wheel; 2-9- conductive spring; 2-10- conductive wheel; 2-11- gear; 2-12- reduction motor;

[0062] 2-7-1-O-ring; 2-7-2-copper roller; 2-7-3-conductive fluid; 2-7-4-first bearing; 2-7-5-first rotor;

[0063] 2-9-1-first connecting section; 2-9-2-second connecting section;

[0064] 2-10-1-conductive fluid; 2-10-2-second bearing; 2-10-3-sealing ring; 2-10-4-copper shaft; 2-10-5-second rotor;

[0065] 5-1- first water barrier; 5-2- second water barrier;

[0066] 8-1-first conductive bracket; 8-2-second conductive bracket. DETAILED DESCRIPTION

[0067] The following examples are provided for a better understanding of the present invention, but are not intended to limit the best mode of implementation, nor to limit the content and protection scope of the present invention. Any product identical or similar to the present invention obtained by anyone under the inspiration of the present invention or by combining the features of the present invention with other prior arts shall fall within the protection scope of the present invention.

[0068] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying 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", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0069] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0070] In addition, the technical features involved in the different embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0071] Example 1

[0072] This embodiment provides a tinning device for a copper busbar, such as Figure 1-10 As shown, it includes a conveying device for conveying a copper busbar and a tinning device for tinning the copper busbar, which are connected in sequence;

[0073] The conveying device 2 is used to convey the copper busbar; it includes a first rubber wheel 2-8, a conductive rotating shaft 2-4 and a second rubber wheel 2-7; the first rubber wheel 2-8 is used to convey the copper busbar placed on the first rubber wheel 2-8, and the first rubber wheel is connected to the second power unit. In this embodiment, the second power unit is a reduction motor 2-12, and the reduction motor 2-12 drives the first rubber wheel 2-8 to rotate through the mutually meshing gears 2-11, thereby conveying the copper busbar 9 placed thereon; the conductive rotating shaft 4 is spaced apart from the first rubber wheel 2-8, and the end 2-2 of the conductive rotating shaft is connected to the cathode of the power supply, and the conductive rotating shaft 2-4 is fixedly connected to the first power unit, through The conductive shaft is driven to rotate by the power unit; in this embodiment, the first power unit can be a cylinder 2-3; the second rubber wheel 2-7 is fixedly connected to the conductive shaft 2-4, and can be close to or away from the first rubber wheel as the conductive shaft rotates, and the second rubber wheel 2-7 can abut against the surface of the copper busbar 9 as the conductive shaft 2-4 rotates; in this embodiment, the material of the second rubber wheel can be but not limited to copper. When the second rubber wheel is pressed onto the copper busbar, the second rubber wheel and the first rubber wheel correspond to each other. The second rubber wheel can not only press the copper busbar to increase friction and provide motive power for the movement of the copper busbar, but also can achieve the effect of conducting electricity, thereby ensuring that the copper busbar is connected to the power supply;

[0074] A tinning device is used for tinning a copper busbar, and the tinning device includes an upper tin trough 14 for containing electrolyte, and a plurality of support units and tin plates arranged at intervals therein for supporting the copper busbar; in this embodiment, the support unit is a supporting roller 4, and the tin plate is composed of a first tin plate 7 and a second tin plate 6, and the first tin plate 7 is arranged at the bottom position of the upper tin trough; the second tin plate 6 is arranged at a position close to the top position of the upper tin trough; the tinning device also includes a conductive bracket 8, which is connected to the first tin plate and the second tin plate, and the conductive bracket 8 is electrically connected to the positive electrode of the power supply, so that the tin plate serves as an anode for tinning the copper busbar; a water baffle 5 is also arranged in the upper tin trough, and the water baffle 5 includes a first water baffle 5-1 and a second water baffle 5-2, and the first water baffle 5-1 and the second water baffle 5-2 It can be a soft rubber baffle, which is set at the two opposite ends of the upper tin bath. The copper busbar is transferred to the tinning device through the transfer port on the first baffle 5-1, and the copper busbar after tinning is transferred out of the tinning device through the transfer port on the second baffle 5-2. The baffle is tightly connected to the bottom position in the upper tin bath. The size of the transfer port on the baffle is the same as the size of the copper busbar, so that the tinning electrolyte can be stored in the upper tin bath 4. The height of the baffle 5 is not lower than the height of the second tin plate 6, so that the second tin plate can be immersed in the electrolyte. At the same time, the height of the baffle is lower than the two side walls of the upper tin bath (the same as the conveying direction of the copper busbar), so that the electrolyte can overflow to the overflow tank through the baffle, and the electrolyte in the tinning device can be replaced in time. The material of the first tin plate is tin, and the number is 4. The material of the second tin plate is tin, and the number is 4. The material of the conductive bracket is conductive metal, which can be but not limited to metallic copper, and the number is 16. The conductive bracket is connected to the anode of the power supply;

[0075] The induction switch 3 is arranged between the conveying device and the tinning device and is interlocked with the conveying device to maintain or disconnect the electrical connection between the copper busbar and the conveying device. Specifically, it can be a pressing induction switch.

[0076] In the above-mentioned copper busbar tinning device, the second rubber wheel is arranged on the conveying device, which can not only press the copper busbar to increase friction and provide motive force for the movement of the copper busbar, but also play a conductive effect, ensuring that the copper busbar is connected to the power supply, improving the uniformity of tinning, and thus ensuring the uniformity of the tin layer; by arranging a plurality of tinning devices, the efficiency of tinning can be improved; the induction switch in the device is used to maintain or disconnect the electrical connection between the copper busbar and the conveying device. When the copper busbar is conveyed to the induction switch, the induction switch controls the conveying device to start working, the cylinder drives the conductive shaft to rotate, the second rubber wheel abuts against the copper busbar, the copper busbar is electrically connected to the power supply, the tinning device is connected to the power supply, and the copper busbar starts to be tinned; when the copper busbar is tinned and leaves the tinning device, the induction switch controls the conveying device, the cylinder drives the conductive shaft to rotate, the second rubber wheel leaves the copper busbar, and the electrical connection between the copper busbar and the conveying device is disconnected. When the copper busbar leaves the tinning device, the copper busbar is no longer energized, which improves the safety of operation and reduces the risk of electric injury. When the copper busbar is transferred to the supporting unit, the copper busbar is located between the first tin plate and the second tin plate.

[0077] In an optional embodiment, the copper busbar tinning device further includes a tinning unit containing an electrolyte and a purification unit for purifying the electrolyte after the reaction, such as Figure 2 and 3 As shown, the tinning unit is connected to the upper tin tank and the purification unit respectively, and the purification unit is connected to the overflow tank 13 arranged on one side of the upper tin tank; in this embodiment, the tinning unit includes an electrolyte storage box 12 and a circulation pump 11, the electrolyte storage box 12 is used to store electrolyte, and the circulation pump 11 sends the electrolyte in the electrolyte storage box to the upper tin tank. The purification unit is a purification pump 10, and the electrolyte in the overflow tank 13 flows into the purification pump through the return pipe 1 to purify the electrolyte, and the purified electrolyte flows into the electrolyte storage box; this embodiment can realize the instant replacement of the electrolyte in the upper tin tank, and at the same time, it can also ensure that the temperature of the electrolyte in the copper busbar tinning process is relatively constant and will not fluctuate greatly. In this embodiment, the circulation pump is a high-flow circulation pump, which can replace the solution in the tinning device 4 times within 1 minute.

[0078] A preferred embodiment is as follows Figure 5As shown, the second rubber wheel includes a copper roller shaft 2-7-2 and a first bearing 2-7-4 sleeved thereon near both ends of the copper roller shaft, a first rotating wheel 2-7-5 is fixed on the outer surface of the bearing, and O-rings 2-7-1 are respectively arranged between the first bearing 2-7-4 and the copper roller shaft 2-7-2 near the copper roller shaft, and the O-rings 2-7-1 are used for sealing. The O-rings 2-7-1, the copper roller shaft 2-7-2 and the first rotating wheel 2-7-5 enclose a closed space for filling a conductive fluid 2-7-3, and the current from the copper roller shaft is transmitted to the first rotating wheel 2-7-5 through the conductive fluid, and is transmitted to the copper busbar 9 through the first rotating wheel 2-7-5; the conductive fluid can be a low melting point alloy, for example, an indium gallium alloy or an indium gallium tin alloy. In one embodiment, the conductive fluid can be an indium gallium alloy with a mass ratio of 14:86, and in another embodiment, the conductive fluid can be a gallium indium tin alloy with a mass ratio of 68:22:10. In this embodiment, by providing a conductive fluid in the second rubber wheel, the current can be better transmitted to the copper busbar.

[0079] In an optional embodiment, the conductive bracket 8 includes a first conductive bracket 8-1 and a second conductive bracket 8-2, the first conductive bracket 8-1 is perpendicular to the first tin plate 7, and is connected to the first tin plate 7 and the second tin plate 6 at the same time; the second conductive bracket 8-2 is connected to the first conductive bracket 8-1, and is perpendicular to the first conductive bracket 8-1, parallel to the second tin plate 6, and the second conductive bracket 8-2 is connected to the anode of the power supply.

[0080] Optional implementations, such as Figure 6 As shown, the conveying device also includes an elastic conductive member assembly, which is arranged on the conductive rotating shaft 2-4 and has a plurality of abutment portions that can approach or move away from the first rubber wheel as the conductive rotating shaft rotates, and the abutment portions can abut against the corresponding copper busbar surface as the conductive rotating shaft rotates; this method can realize that the copper busbar is connected to the power supply at the same time, and the fixed point is improved to multi-point contact, and the uniformity of the tin layer thickness is guaranteed in the tinning process. Since the copper busbar is not absolutely flat, when the integral pressure roller conducts electricity, the actual conductive contact is point contact, and each roller can only contact 2 points on the copper busbar. During the tinning process of the copper busbar, it is not easy to have local excessive current and blackening of the copper busbar surface, and the method of the second rubber wheel is optimized.

[0081] As a preferred embodiment, the elastic conductive member assembly includes a plurality of conductive springs 2-9 arranged on the conductive rotating shaft at intervals along the axial direction thereof, and a conductive wheel 2-10 arranged at the end of the conductive spring and serving as an abutment portion. Figure 5 As shown, the number of the conductive springs 2-9 is 9. The conductive springs can play a buffering role and reduce the damage to the conductive wheel. At the same time, the deformation force of the conductive springs is used to make the conductive wheel close to the copper busbar to ensure a good conductive contact effect. More specifically, as Fig.10As shown, the conductive wheel includes a copper shaft 2-10-4 and two corrosion-resistant second bearings 2-10-2 sleeved thereon near both ends of the copper shaft, a second rotating wheel 2-10-5 is fixed on the outer surface of the two bearings, and a sealing ring 2-10-3 is respectively arranged between the rotating wheel and the copper shaft near the two second bearings, the sealing ring 2-10-3, the copper shaft 2-10-4 and the second rotating wheel 2-10-5 enclose a closed space for filling a conductive fluid 2-10-1, and the current from the conductive spring and the copper shaft is successively transmitted to the second rotating wheel 2-10-5 through the conductive fluid, and finally transmitted to the copper busbar 9 through the second rotating wheel 2-10-5; the conductive fluid can be a low melting point alloy, for example, an indium gallium alloy or an indium gallium tin alloy. In one embodiment, the conductive fluid can be an indium gallium alloy with a mass ratio of 14:86, and in another embodiment, the conductive fluid can be a gallium indium tin alloy with a mass ratio of 68:22:10.

[0082] Of course, as required, a plurality of conductive springs in the elastic conductive member assembly can be vertically connected to the conductive shaft via a connecting shaft. In this embodiment, the material of the conductive shaft, the conductive springs and the conductive wheel can be but is not limited to copper.

[0083] The conductive shaft 2-4 is arranged parallel to the first rubber wheel 2-8; the conductive spring piece 2-9 is perpendicular to the conductive shaft 2-4. Through this arrangement, the conductive shaft 2-4 and the first rubber wheel 2-8 rotate synchronously, and when the conductive shaft 2-4 rotates, the conductive spring piece is driven to approach or move away from the copper busbar;

[0084] The number of the abutment portions corresponds to the number of the copper busbars one by one, so that the contact points between the copper busbars 9 and the conductive wheels 2-10 are increased, the uniformity of tinning on the copper busbars is improved, and the problem of excessive current and blackening of the surface of the copper busbars is avoided.

[0085] As a most preferred embodiment, the transmission device of the copper busbar also includes a conductive support assembly, which includes a first conductive support member 2-5 and a second conductive support member 2-6. The first conductive support member 2-5 is arranged on the conductive shaft 2-4 near both ends thereof, and is used to fix both ends of the second rubber wheel 2-7; the second conductive support member 2-6 is connected to the first conductive support member 2-5 at both ends of the second rubber wheel 2-7 and fixed thereon, and an elastic conductive member assembly is arranged on the second conductive support member 2-6, the first conductive support member 2-5 is perpendicular to the conductive shaft 2-4, and the second conductive support member 2-6 is perpendicular to the first conductive support member 2-5. By arranging the conductive support member, the stress on the conductive shaft can be reduced while conducting electricity. In this embodiment, the conductive support assembly can be but not limited to copper.

[0086] Furthermore, the two ends of the second conductive support member 2-6 extend toward the first conductive support member 2-5 to form two spacing segments, and the second conductive support member is vertically connected to the first conductive support member through the two spacing segments, so as to ensure that there is a distance between the second rubber wheel and the conductive spring sheet, and they do not interfere with each other.

[0087] In this embodiment, the conductive shaft and the elastic conductive component assembly are located on the same side of the copper busbar, the first rubber wheel is located on the other side of the copper busbar, which is different from the conductive shaft, and the conductive shaft is arranged parallel to the first rubber wheel.

[0088] Optionally, the conductive spring clip includes a first connecting section 2-9-1 and a second connecting section 2-9-2 connected in sequence, and the conductive spring clip is connected to the conductive wheel 2-10 through the second connecting section 2-9-2. When the conductive wheel 2-10 abuts against the surface of the corresponding copper busbar 9, the second connecting section 2-9-2 is parallel to the copper busbar 9, and the first connecting end 2-9-1 is inclined relative to the copper busbar. By having the second connecting section parallel to the copper busbar, it can be ensured that the conductive wheel can better contact the copper busbar and improve conductivity.

[0089] The working principle of the copper busbar tinning device is as follows: when the copper busbar is placed on the first rubber wheel and starts to be transported to the induction switch, the induction switch controls the transport device to start working, the cylinder 12 moves, and the cylinder power plate drives the conductive shaft to rotate, so that the conductive wheel first contacts the copper busbar, and then the second rubber wheel presses the copper busbar. At this time, the conductive wheel has the deformation pressure of the conductive spring, so that the conductive wheel and the copper busbar are leveled, and the conductive wheel and the copper busbar are in large-area contact, thereby connecting the copper busbar to the power supply. The second rubber wheel presses the copper busbar to increase friction and provide power for the copper busbar to move;

[0090] When the copper busbar enters the tinning device through the conveying port of the baffle plate, the first tin plate and the second tin plate act as anodes and the copper busbar acts as cathode, and electroplating begins on the front and back sides of the copper busbar. The tin in the first tin plate and the second tin plate is deposited onto the copper busbar through the electrolyte to form a tin layer.

[0091] Obviously, the above embodiments are merely examples for the purpose of clear explanation, and are not intended to limit the implementation methods. For those skilled in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all the implementation methods here. The obvious changes or modifications derived from these are still within the scope of protection of the invention.

Claims

1. A tinning device for a copper busbar, characterized in that: include, A conveying device for conveying the copper busbar and a tinning device for tinning the copper busbar, which are connected in sequence; The conveying device comprises a first rubber wheel, a conductive rotating shaft and a second rubber wheel, wherein the first rubber wheel is used to convey the copper busbar placed on the first rubber wheel; the conductive rotating shaft is spaced apart from the first rubber wheel; the second rubber wheel is fixedly connected to the conductive rotating shaft and can approach or move away from the first rubber wheel as the conductive rotating shaft rotates, and the second rubber wheel can abut against the surface of the copper busbar as the conductive rotating shaft rotates; The transmission device further comprises: The elastic conductive component assembly is arranged on the conductive rotating shaft, and has a plurality of abutting portions that can be moved closer to or away from the first rubber wheel as the conductive rotating shaft rotates, and the abutting portions can abut against the corresponding copper busbar surface as the conductive rotating shaft rotates; the elastic conductive component assembly includes a plurality of conductive springs arranged thereon at intervals along the axial direction of the conductive rotating shaft, and the conductive springs include a first connecting section and a second connecting section connected in sequence, and when the abutting portion abuts against the corresponding copper busbar surface, the first connecting section is inclined relative to the copper busbar, and the second connecting section is parallel to the copper busbar; The induction switch is arranged between the conveying device and the tinning device and is interlocked with the conveying device to maintain or disconnect the electrical connection between the copper busbar and the conveying device.

2. The tinning device according to claim 1, characterized in that: The tinning device comprises: An upper tin tank for containing electrolyte and a plurality of support units arranged therein at intervals for supporting the copper busbar; The tin plate is arranged on at least one side of the copper busbar on the supporting unit and is spaced apart from the copper busbar.

3. The tinning device according to claim 2, characterized in that: The tin plate is composed of a first tin plate and a second tin plate, wherein the first tin plate is arranged near the bottom of the upper tin tank, and the second tin plate is arranged near the top of the upper tin tank, and when the copper busbar is transferred to the supporting unit, the copper busbar is located between the first tin plate and the second tin plate; and / or, The supporting unit is a supporting roller.

4. The tinning device according to claim 2 or 3, characterized in that: It also includes a tinning unit containing electrolyte and a purification unit for purifying the electrolyte after reaction. The tinning unit is connected to the tin tank and the purification unit respectively, and the purification unit is connected to an overflow tank arranged on one side of the tin tank.

5. The tinning device according to claim 1, characterized in that: The elastic conductive element assembly also includes a conductive wheel which is arranged at the end of the conductive spring sheet and serves as an abutting portion.

6. The tinning device according to claim 5, characterized in that: The conductive rotating shaft is arranged parallel to the first rubber wheel; The conductive spring is perpendicular to the conductive rotation axis; and / or, The number of the abutting portions corresponds one to one to the number of the copper busbars.

7. The tinning device according to claim 5, characterized in that: The conductive wheel and / or the second rubber wheel are filled with conductive fluid.

8. The tinning device according to claim 7, characterized in that: The conductive fluid is a low melting point alloy.

9. The tinning device according to claim 8, characterized in that: The low melting point alloy is an indium gallium alloy or an indium gallium tin alloy.

10. The tinning device according to claim 6, characterized in that: The transmission device also includes, A conductive support assembly, the conductive support assembly includes a first conductive support member and a second conductive support member, the first conductive support member is arranged on the conductive shaft near both ends thereof, and is used to fix both ends of the second rubber wheel; The second conductive support member is connected to the first conductive support members at both ends of the second rubber wheel and fixed thereon, and an elastic conductive member assembly is arranged on the second conductive support member.

11. The tinning device according to claim 10, characterized in that: The first conductive support member and the second conductive support member are both made of conductive metal.

12. A tinning system for a copper busbar, characterized in that: The invention comprises at least two tinning devices for the copper busbars according to any one of claims 1 to 11 which are connected in series.

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