A continuous composite device of metal composite welding strip
The continuous composite equipment for metal composite welding strips has solved the problems of oxide layer and porosity when welding silver tin oxide strips and silver composite strips, achieving high efficiency and stable welding quality and production efficiency, and is suitable for continuous production of multilayer composite materials.
Patent Information
- Application Number
- CN202521894359.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-09-03
- Publication Date
- 2026-08-25
- Estimated Expiration
- 2035-09-03
AI Technical Summary
In existing technologies, when silver tin oxide strip and silver composite strip are welded, an oxide layer and pores are easily formed on the surface, which affects the welding quality. Furthermore, it is difficult to achieve process integration and control on high-speed continuous production lines, which restricts the efficiency and quality stability of industrial production.
The continuous composite equipment using metal composite welding strips includes strip unwinding, solder feeding, composite welding, and cooling devices. Welding is achieved by spraying flux and induction heating. Combined with a traction guide device, stable conveying and precise alignment are ensured. An infrared thermometer and an intelligent temperature control system are used for temperature monitoring and adjustment.
It improves welding quality, reduces the risk of welding defects, simplifies subsequent processing procedures, increases production efficiency and equipment intelligence, and is suitable for the efficient and continuous production of multi-layer composite materials.
Smart Images
Figure CN224673951U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of solder metal composite strip preparation technology, and in particular to a continuous composite equipment for metal composite solder strips. Background Technology
[0002] Currently, electrical contact materials are widely used in various electrical switches, relays, contactors, and other electrical equipment, undertaking the crucial functions of conducting and breaking current. During operation, contact materials are frequently subjected to arc erosion, high-temperature impact, and mechanical wear, therefore, they must possess excellent conductivity, weld resistance, and wear resistance. Silver-based electrical contact materials have gained the most extensive research and application in these fields due to their excellent conductivity, wear resistance, weld resistance, and low contact resistance. Among them, silver-tin oxide material, as one of the representatives of silver-based contacts, is gradually becoming a representative of high-performance electrical contact materials due to its combination of the above-mentioned excellent properties and its more environmentally friendly nature. To improve the overall conductivity of the material and reduce contact resistance, a composite method of silver-tin oxide strip and silver strip is often used. This combines the excellent conductivity of silver with the weld resistance and ablation resistance of silver-tin oxide, resulting in a double-layer composite material structure that balances mechanical strength, heat resistance, and electrical performance.
[0003] In current methods for preparing composite strips, oxide layers and pores easily form on the surface when silver-tin oxide strips are welded to silver composite strips and silver-based solder sheets. This not only affects the quality of subsequent welding but also requires additional pickling or strong reducing cleaning solutions to remove the oxides from the strip surface after composite preparation. This process not only poses corrosion risks and environmental pollution but also necessitates multi-station intermittent operations during composite preparation, making it difficult to achieve process integration and control on high-speed continuous production lines, thus limiting its industrial production efficiency and quality stability. Utility Model Content
[0004] Therefore, in order to solve the problems existing in the prior art, the purpose of this utility model is to provide a continuous composite equipment for metal composite welding strips.
[0005] To achieve the above objectives, this utility model provides the following technical solution:
[0006] A continuous composite equipment for metal composite solder strips includes a strip unwinding device, a solder feeding device, and a composite welding device arranged sequentially. The strip unwinding device includes a first strip unwinding device and a second strip unwinding device for winding and unwinding a first strip (silver tin oxide coated with silver or other) and a second strip (silver-based solder strip or other) to be composite welded. The first strip unwinding device and the second strip unwinding device are arranged vertically at intervals. The solder feeding device includes a first spraying mechanism and a second spraying mechanism respectively arranged on the conveying paths of the first strip and the second strip. The first spraying mechanism and the second spraying mechanism are respectively used to spray flux onto the surfaces of the first strip and the second strip. The composite welding device is used to bond the flux-coated first strip (silver tin oxide coated with silver or other) and the second strip (silver-based solder strip or other) together and perform induction heating composite to form a composite finished strip.
[0007] Further explanation: the first spraying mechanism and the second spraying mechanism each include a mounting base, a cylinder disposed on the mounting base for holding flux, a push rod movably disposed in the inner cavity of the cylinder, and a screw drive mechanism for driving the push rod to move; a nozzle is provided at the end of the cylinder; the screw drive mechanism drives the push rod to move axially along the inner cavity of the cylinder, and squeezes the flux out of the nozzle and sprays it evenly onto the corresponding surfaces of the first strip and the second strip.
[0008] To further explain, the lead screw drive mechanism includes a spraying drive motor, a lead screw, and a push plate that is threadedly connected to the lead screw, all mounted on the mounting base. The end of the push rod extends out of the cylinder and is fixed to the push plate. The spraying drive motor drives the lead screw to rotate, which in turn drives the push plate to move axially along the lead screw, thereby driving the push rod to reciprocate along the inner cavity of the cylinder.
[0009] To further explain, the drive motor is a servo motor or a stepper motor, which is fixed to the mounting base by a motor mounting bracket; the cylinder is fixed to the mounting base by a cylinder mounting bracket, located directly below the motor mounting bracket, and a guide rod is provided between the motor mounting bracket and the cylinder mounting bracket. The two guide rods are located on both sides of the lead screw and are slidably connected to the push plate.
[0010] Further explanation: the continuous composite equipment also includes a cooling device, a finished product winding device, and a main control system; the cooling device is used to cool the finished strip after the first strip and the second strip are composited; the finished product winding device is used to wind the cooled finished strip; the main control system is electrically connected to the strip unwinding device, the solder feeding device, the composite welding device, the cooling device, and the finished product winding device.
[0011] Furthermore, the continuous composite equipment also includes a traction guide device for conveying the strip; the traction guide device includes a welding strip traction wheel set for traction of the first strip / second strip and a finished strip traction wheel set for traction of the finished composite strip.
[0012] The welding strip traction wheel set is located on the front side of the composite welding device, and the finished strip traction wheel set is located on the rear side of the cooling device. The welding strip traction wheel set and the finished strip traction wheel set each include two pressure rollers spaced apart and a traction motor for driving the pressure rollers to rotate. The pressure rollers clamp and press against the upper and lower surfaces of the first strip, the second strip, or the finished strip, respectively, to pull the corresponding first strip, the second strip, or the finished strip forward to the next process.
[0013] Furthermore, the traction guiding device also includes a guide wheel assembly disposed on the side of the welding strip traction wheel assembly and / or the finished strip traction wheel assembly; the guide wheel assembly includes two horizontally rotatable guide wheels spaced apart, the two guide wheels being symmetrically arranged on the left and right sides of the strip travel direction to limit the lateral displacement of the first strip and / or the second strip and / or the finished strip.
[0014] To further explain, the traction guiding device also includes a sensing wheel for contact sensing of the first strip and controlling the start and stop of the traction motor of the pressure roller; the sensing wheel is disposed between the first strip unwinding and the first spraying mechanism, and is located below the first strip. When the first strip sags due to excessive stacking and contacts the sensing wheel, the sensing wheel sends a strip contact sensing signal to the main control system, and the main control system controls the traction motor to stop working.
[0015] Further explanation: the composite welding device includes a heating sealing cover and an induction heating coil disposed under the heating sealing cover; the heating sealing cover is provided with a ventilation pipe for introducing protective gas, and a protective atmosphere with positive pressure is formed inside the heating cover during operation; the induction heating coil is used to perform induction heating composite bonding of the first strip and the second strip after bonding; an infrared thermometer for real-time temperature measurement is also provided above the heating sealing cover.
[0016] Further explanation: the cooling device includes a cooling shroud, on which a cooling water pipe is provided and connected to an external circulating cooling water source; the finished product winding device includes a winding drum for rotating and winding the cooled finished product strip.
[0017] To further clarify, the first strip is a silver strip, and the second strip is a silver-tin oxide strip; the protective atmosphere and flux can both be of a type suitable for the above-mentioned strip composite.
[0018] Compared with the prior art, the beneficial effects of this utility model are at least in the following aspects:
[0019] 1) This utility model sets up a solder dispensing device before the composite welding of strip materials to spray flux onto the surface of the strip materials to be composited, providing a clean metal interface for subsequent welding and improving welding quality from the source; at the same time, during the induction heating process, the flux can continuously form a reducing atmosphere or protective film, reducing the porosity of the solder strip and effectively preventing the solder strip interface from oxidizing again, so as to achieve stronger metallurgical bonding during the welding process; in addition, there is very little residue after welding, simple additional cleaning, greatly simplifying the subsequent processing procedures, improving production efficiency and reducing production costs.
[0020] Furthermore, the solder application device applies the flux at the station closest to the welding stage, shortening the exposure time and maximizing the activity of the flux. This effectively prevents premature evaporation or oxidation failure, further enhancing its antioxidant protection during high-temperature welding. This not only ensures the cleanliness and compatibility of the weld interface, reducing the risk of welding defects such as voids and slag inclusions, but also eliminates the need for additional cleaning of oxide residues after welding, optimizing the entire solder strip composite process.
[0021] 2) The traction and guiding device of this utility model has a simple structure and more stable automatic conveying of welding strip. Specifically, the traction and guiding device includes two sets of pressure roller traction mechanisms located at the front and rear of the welding device and a matching guide wheel set, which respectively press the upper and lower surfaces of the strip to prevent the strip from slipping, deviating or loosening during the conveying process, and ensure that the strip enters the composite welding device at a constant speed and a stable path. At the same time, the guide wheels set on both sides of the strip provide lateral restriction on the running direction of the strip to prevent the strip from snakeing or deviating in position, and further improve the accuracy of the fitting position and weld alignment.
[0022] 3) This utility model's composite equipment boasts a high degree of intelligence, enabling higher efficiency and continuous large-diameter composite bonding of multiple layers of different composite materials. Firstly, the equipment is equipped with an independent automatic flux spraying mechanism, combined with a servo drive and quantitative control system, ensuring stable and controllable flux spraying volume, avoiding waste and improving the consistency of welding interface treatment. Secondly, the induction heating device integrates an infrared thermometer and a multi-channel intelligent temperature control system, which can monitor temperature changes in the welding zone in real time and precisely adjust the heating power to adapt to the composite needs of strips with different materials and thicknesses. It also features a synchronous traction guide system and induction wheels, which sense the strip status in real time and automatically start and stop traction, effectively preventing strip accumulation or breakage and improving overall operational stability. Attached Figure Description
[0023] Figure 1 This is a schematic diagram of the overall structure of a continuous composite equipment for metal composite welding strips according to a preferred embodiment of the present invention.
[0024] Figure 2 for Figure 1 Enlarged view of a portion of point D;
[0025] Figure 3 This is a partial structural schematic diagram of a continuous composite equipment for metal composite welding strips according to a preferred embodiment of the present invention;
[0026] Figure 4 This is a partial front view of the structure of a continuous composite equipment for metal composite welding strips according to a preferred embodiment of the present invention.
[0027] Figure 5 This is a schematic diagram of the overall structure of the solder feeding device of the continuous composite equipment for metal composite welding strips according to a preferred embodiment of the present invention.
[0028] Figure 6 This is an exploded view of the overall structure of the solder feeding device of the continuous composite equipment for metal composite welding strips, which is a preferred embodiment of the present invention.
[0029] Figure 7 This is a schematic diagram of the overall structure of the finished product belt traction wheel assembly of the continuous composite equipment for metal composite welding strips, which is a preferred embodiment of this utility model.
[0030] In the picture:
[0031] 1. Strip unwinding device; 11. First strip unwinding device; 12. Second strip unwinding device; 2. Welding material feeding device; 21. First spraying mechanism; 22. Second spraying mechanism; 23. Mounting base; 24. Cylinder; 241. Nozzle; 25. Push rod; 26. Screw drive mechanism; 261. Spraying drive motor; 262. Screw; 263. Push plate; 264. Motor mounting bracket; 265. Cylinder mounting bracket; 266. Guide rod; 3. Composite welding device; 31. Heating sealing cover; 32. Induction heating coil; 33. Ventilation pipe; 34. Infrared thermometer; 4. Cooling device; 41. Cooling cover; 42. Cooling water pipe; 5. Finished product winding device; 51. Winding drum; 6. Traction guide device; 61. Welding strip traction wheel set; 62. Finished product traction wheel set; 63. Guide wheel set; 64. Induction wheel; 7. Strip support;
[0032] A. First strip; B. Second strip; C. Finished strip. Detailed Implementation
[0033] To facilitate understanding of this utility model, the technical solution and advantages of the utility model will be further described in detail below with reference to the accompanying drawings and embodiments. The specific structure and features of this utility model are illustrated by way of example and should not constitute any limitation on this utility model. Furthermore, any of the technical features mentioned below (including implicit or disclosed features), as well as any technical features directly shown or implied in the figures, can be arbitrarily combined or deleted among these technical features to form other embodiments that may not be directly or indirectly mentioned in this utility model. The accompanying drawings show preferred embodiments of this utility model. However, this utility model can be implemented in many different forms and is not limited to the embodiments described herein.
[0034] In the description of this utility model, unless otherwise stated, all components used are conventional components in the prior art.
[0035] like Figure 1-7 As shown, this utility model provides a continuous composite equipment for metal composite welding strips, including a strip uncoiling device 1, a solder feeding device 2, a composite welding device 3, a cooling device 4, a finished product winding device 5, and a main control system (not marked in the figure) arranged in sequence; the main control system is electrically connected to the strip uncoiling device 1, the solder feeding device 2, the composite welding device 3, the cooling device 4, and the finished product winding device 5.
[0036] The strip unwinding device 1 includes a first strip unwinding device 11 and a second strip unwinding device 12 for winding and unwinding the first strip A and the second strip B to be composite welded, respectively; the first strip unwinding device 11 and the second strip unwinding device 12 are arranged vertically at intervals; in this embodiment, the unwinding shafts of the first strip unwinding device 11 and the second strip unwinding device 12 are generally unpowered and can be equipped with a conventional adjustable tension magnetic powder brake (0.6kg) to operate synchronously with an existing tension controller.
[0037] The solder dispensing device 2 includes a first spraying mechanism 21 and a second spraying mechanism 22 respectively disposed on the conveying paths of the first strip A and the second strip B; the first spraying mechanism 21 and the second spraying mechanism 22 are respectively used to spray flux onto the surfaces of the first strip A and the second strip B.
[0038] The composite welding device 3 is used to bond and heat the first strip A and the second strip B, which have been coated with flux, to form a composite finished strip C.
[0039] The cooling device 4 is used to cool the finished strip after the first strip A and the second strip B are combined; the finished strip winding device 5 is used to wind up the cooled finished strip.
[0040] In this embodiment, the first strip A is silver tin oxide / silver strip, and the second strip B is silver-based solder strip; the flux can be any type suitable for the above-mentioned strip composite. For example, the flux can be a micro-active, non-corrosive, or flux specifically designed for precious metal welding, to meet the welding requirements of silver or silver-based materials.
[0041] It should be understood that the structure described in this solution is not limited to a composite of silver tin oxide / silver strip and silver-based solder strip. In other embodiments, the first strip A and the second strip B may also be other composite metals or other silver-based or copper-based alloy materials. The corresponding flux type can be flexibly selected according to the thermal conductivity, melting point and surface oxidation characteristics of different metal combinations.
[0042] This invention incorporates a solder dispensing device 2 before strip composite welding, which sprays flux onto the surfaces of the strips to be composited, providing a clean metal interface for subsequent welding and improving welding quality from the source. Simultaneously, during induction heating, the flux continuously forms a reducing atmosphere or protective film, effectively preventing interface re-oxidation, resulting in stronger metallurgical bonding and reduced porosity during welding. Furthermore, minimal residue is produced after welding, requiring only simple additional cleaning, greatly simplifying subsequent processing steps, improving production efficiency, and reducing production costs.
[0043] The structure of the solder dispensing device 2 is further described as follows: The first spraying mechanism 21 and the second spraying mechanism 22 each include a mounting base 23, a cylinder 24 disposed on the mounting base 23 for holding flux, a push rod 25 movably disposed in the inner cavity of the cylinder 24, and a screw drive mechanism 26 for driving the push rod 25 to move; a nozzle 241 is provided at the end of the cylinder 24; the screw drive mechanism 26 drives the push rod 25 to move axially along the inner cavity of the cylinder 24, and squeezes the flux out from the nozzle 241 and sprays it evenly onto the upper surfaces of the corresponding first strip A and second strip B.
[0044] In this embodiment, the lower end of the cylinder 24 is open, the nozzle 241 adopts a slender tubular structure, and the push rod 25 adopts a piston-type linear push rod with a sealing ring at the end.
[0045] Specifically, the lead screw drive mechanism 26 includes a spraying drive motor 261, a lead screw 262, and a push plate 263 threadedly connected to the lead screw 262, all mounted on the mounting base 23. The end of the push rod 25 extends outside the cylinder 24 and is fixed to the push plate 263. The spraying drive motor 261 drives the lead screw 262 to rotate, drives the push plate 263 to move axially along the lead screw 262, and thus drives the push rod 25 to reciprocate along the inner cavity of the cylinder 24.
[0046] In this embodiment, the drive motor is a servo motor or a stepper motor, such as a small geared servo motor (0.04 kW), which is fixed to the mounting base 23 by the motor mounting bracket 264; the lead screw 262 can be an M6 ball screw, or other conventional lead screws that can meet the requirements of this utility model. The cylinder 24 is fixed to the mounting base 23 by the cylinder mounting bracket 265, located directly below the motor mounting bracket 264; in order to make the flux spraying operation more stable and improve the flux spraying effect, a guide rod 266 is provided between the motor mounting bracket 264 and the cylinder mounting bracket 265, and the two guide rods 266 are respectively located on both sides of the lead screw 262 and are slidably connected to the push plate 263.
[0047] In some optional embodiments, a traction guide device 6 for conveying the belt is also included; the traction guide device 6 includes a welding strip traction wheel set 61 for traction of the first strip A / second strip B and a finished strip traction wheel set 62 for traction of the composite finished strip.
[0048] The welding strip traction wheel set 61 is located on the front side of the composite welding device 3, and the finished strip traction wheel set 62 is located on the rear side of the cooling device 4. The welding strip traction wheel set 61 and the finished strip traction wheel set 62 each include two pressure rollers spaced apart and a traction motor for driving the pressure rollers to rotate. The pressure rollers clamp and press against the upper and lower surfaces of the first strip A, the second strip B, or the finished strip, respectively, to pull the corresponding first strip A, second strip B, or finished strip forward to the next process.
[0049] In a more detailed manner, the traction guiding device 6 further includes a guide wheel group 63 disposed on the side of the welding strip traction wheel group 61 and / or the finished strip traction wheel group 62; the guide wheel group 63 includes two horizontally rotatable guide wheels spaced apart, the two guide wheels being symmetrically arranged on the left and right sides of the strip travel direction to limit the lateral displacement of the first strip A and / or the second strip B and / or the finished strip.
[0050] To further improve the stability of the welding strip conveying, optionally, the traction guide device 6 further includes a sensing wheel 64 for contact sensing of the first strip A and controlling the start and stop of the traction motor of the pressure roller; the sensing wheel 64 is disposed between the unwinding of the first strip A and the first spraying mechanism 21, and is located below the first strip A. When the first strip A sags due to excessive accumulation and contacts the sensing wheel 64, the sensing wheel 64 sends a strip contact sensing signal to the main control system, and the main control system controls the traction motor to stop working. In this embodiment, by sensing the strip status in real time and automatically starting and stopping traction through the sensing wheel 64, strip accumulation or material breakage is effectively prevented, improving the overall operational stability.
[0051] In some possible implementations, a strip support can also be provided between the welding strip traction wheel of the first strip A and the welding spraying device 2, and a plurality of support rollers are arranged sequentially at intervals on the strip support 7; the induction wheel 64 can be provided on the strip support 7 and located below the first welding strip between two of the support rollers.
[0052] Specifically, the composite welding device 3 includes a heating sealing cover 31 and an induction heating coil 32 disposed within the heating sealing cover 31; the heating sealing cover 31 is provided with a ventilation pipe 33 for introducing protective gas; the induction heating coil 32 is used to heat and composite the first strip A and the second strip B after bonding; an infrared thermometer 34 for real-time temperature measurement is also provided above the heating sealing cover 31. In this embodiment, the induction heating coil 32 adopts a 30kW ultra-high frequency induction heating power supply system, using all-solid-state Siemens IGBT frequency conversion module technology, which can output high-frequency high-frequency current. This current forms a strong magnetic field through the induction coil and acts on the bonded metal strips, causing eddy currents to be rapidly induced on the surface of the strips, which then heat up rapidly under the action of resistance, achieving localized, rapid, and stable heating.
[0053] Furthermore, the heating sealing cover 31 is provided with a protective gas venting pipe 33, which can continuously introduce non-oxidizing atmospheres such as nitrogen, argon or ammonia decomposition gas into the heating area to suppress metal oxidation reaction during high-temperature welding process; the heating sealing cover 31 is also provided with an infrared thermometer 34 to monitor the surface temperature of the welding strip in real time and feed it back to the main control system for easy temperature adjustment and welding quality control.
[0054] Preferably, the composite equipment may also be equipped with a waste gas recovery device at the feed opening on the front side of the heating sealing hood. This waste gas recovery device includes a waste gas recovery pipe for absorbing welding waste gases generated during continuous welding, and this pipe corresponds to the feed opening. Argon or other protective atmosphere is introduced into the heating hood of the composite heating device to create positive pressure, causing the welding waste gases to be discharged from the feed opening and thus drawn into the waste gas recovery device. By timely absorbing harmful gases generated during the welding process, the quality of the working environment is improved.
[0055] Specifically, the cooling device 4 includes a cooling cover 41, on which a cooling water pipe 42 is provided and connected to an external circulating cooling water source through the cooling water pipe 42; this can quickly cool down the metal strip that has just completed composite welding, effectively control the heat-affected zone after welding, prevent excessive welding stress or material deformation, and improve the stability and quality consistency of the finished strip.
[0056] Specifically, in this embodiment, a frame is also included, which is used to house the solder dispensing device, the composite welding device, and the cooling device.
[0057] The finished product winding device 5 includes a winding drum 51 for rotating and winding the cooled finished product strip. Optionally, the winding motor is a 1.5kW motor with a reducer and a 5kg magnetic powder clutch. The frequency (Hz) is adjusted by a frequency converter to precisely control the winding speed. Simultaneously, a tension controller can be installed to monitor and adjust the drum tension in real time, ensuring it precisely matches the pressure applied by the front-end traction. This prevents the finished product strip from becoming loose, stretched, or scratched, ensuring the cooled finished product strip is wound flat and stably, thus improving the reliability and quality control capabilities of the entire automated operation line.
[0058] The operation process of the composite equipment of this utility model is as follows:
[0059] The first and second strips are fed out by the first and second strip unwinding devices, respectively, and are sequentially coated with flux by the first and second spraying mechanisms. The coated first and second strips then enter the composite welding device, where they are bonded together by induction heating coils in a protective atmosphere. The welded strips are further cooled by a cooling device and then stably pulled to the finished strip winding device by a finished strip traction wheel assembly equipped with a traction motor. The winding motor drives the drum for tension-controlled winding.
[0060] It should be noted that components whose models or specific structural parameters are not specifically listed in this specification (such as motors, guide wheels, infrared thermometers, heating devices, induction coil structures, cooling devices, transmission mechanisms, etc.) can be configured and implemented using commonly known and readily available mature components or equivalent alternatives in the prior art, provided that the realization of the core technical solution of this utility model is not affected. Those skilled in the art can select and combine suitable existing components according to specific production needs and equipment selection standards.
[0061] The above embodiments are merely preferred embodiments of the present utility model and should not be construed as limiting the scope of protection of the present utility model. For those skilled in the art, it will be understood that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present utility model. The scope of the present utility model is defined by the appended claims and their equivalents.
Claims
1. A continuous composite equipment for metal composite welding strips, comprising a strip uncoiling device, a solder feeding device, and a composite welding device arranged sequentially; the strip uncoiling device includes a first strip uncoiling device and a second strip uncoiling device for winding and uncoiling a first strip and a second strip to be composite welded, respectively; the first strip uncoiling device and the second strip uncoiling device are arranged vertically at intervals. Its features are, The solder dispensing device includes a first spraying mechanism and a second spraying mechanism respectively disposed on the conveying paths of the first strip and the second strip; the first spraying mechanism and the second spraying mechanism are respectively used to spray flux onto the surface of the first strip and the second strip; the composite welding device is used to bond the flux-coated first strip and the second strip together and heat them to form a composite finished strip.
2. The continuous composite equipment for metal composite welding strips as described in claim 1, characterized in that, The first spraying mechanism and the second spraying mechanism each include a mounting base, a cylinder for holding flux disposed on the mounting base, a push rod movably disposed in the inner cavity of the cylinder, and a screw drive mechanism for driving the push rod to move; the end of the cylinder is provided with a nozzle; the screw drive mechanism drives the push rod to move axially along the inner cavity of the cylinder, and squeezes the flux out of the nozzle and sprays it evenly onto the corresponding surfaces of the first strip and the second strip.
3. The continuous composite equipment for metal composite welding strips as described in claim 2, characterized in that, The lead screw drive mechanism includes a spraying drive motor, a lead screw, and a push plate threadedly connected to the lead screw, all mounted on the mounting base. The end of the push rod extends outside the cylinder and is fixed to the push plate. The spraying drive motor drives the lead screw to rotate, which in turn drives the push plate to move along the axial direction of the lead screw, thereby driving the push rod to reciprocate along the inner cavity of the cylinder.
4. The continuous composite equipment for metal composite welding strips as described in claim 3, characterized in that, The drive motor is a servo motor or a stepper motor, which is fixed to the mounting base by a motor mounting bracket; the cylinder is fixed to the mounting base by a cylinder mounting bracket, located directly below the motor mounting bracket, and a guide rod is provided between the motor mounting bracket and the cylinder mounting bracket. The two guide rods are located on both sides of the lead screw and are slidably connected to the push plate.
5. The continuous composite equipment for metal composite welding strips as described in claim 2 or 4, characterized in that, The continuous composite equipment also includes a cooling device, a finished product winding device, and a main control system; the cooling device is used to cool the finished strip after the first strip and the second strip are composited; the finished product winding device is used to wind the cooled finished strip; the main control system is electrically connected to the strip unwinding device, the solder feeding device, the composite welding device, the cooling device, and the finished product winding device.
6. The continuous composite equipment for metal composite welding strips as described in claim 5, characterized in that, The continuous composite equipment also includes a traction guide device for conveying the strip; the traction guide device includes a welding strip traction wheel set for traction of the first strip / second strip and a finished strip traction wheel set for traction of the finished strip after composite. The welding strip traction wheel set is located on the front side of the composite welding device, and the finished strip traction wheel set is located on the rear side of the cooling device. The welding strip traction wheel set and the finished strip traction wheel set each include two pressure rollers spaced apart and a traction motor for driving the pressure rollers to rotate. The pressure rollers clamp and press against the upper and lower surfaces of the first strip, the second strip, or the finished strip, respectively, to pull the corresponding first strip, the second strip, or the finished strip forward to the next process.
7. The continuous composite equipment for metal composite welding strips as described in claim 6, characterized in that, The traction guiding device further includes a guide wheel assembly disposed on the side of the welding strip traction wheel assembly and / or the finished strip traction wheel assembly; the guide wheel assembly includes two horizontally rotatable guide wheels spaced apart, the two guide wheels being symmetrically arranged on the left and right sides of the strip travel direction to limit the lateral displacement of the first strip and / or the second strip and / or the finished strip.
8. The continuous composite equipment for metal composite welding strips as described in claim 7, characterized in that, The traction guiding device further includes a sensing wheel for contact sensing of the first strip and controlling the start and stop of the traction motor of the pressure roller; the sensing wheel is disposed between the first strip unwinding and the first spraying mechanism, and is located below the first strip. When the first strip sags due to excessive stacking and contacts the sensing wheel, the sensing wheel sends a strip contact sensing signal to the main control system, and the main control system controls the traction motor to stop working.
9. The continuous composite equipment for metal composite welding strips as described in claim 5, characterized in that, The composite welding device includes a heating sealing cover and an induction heating coil disposed under the heating sealing cover; the heating sealing cover is provided with a ventilation pipe for introducing protective gas, and a protective atmosphere with positive pressure is formed inside the heating cover during operation; the induction heating coil is used to heat and composite the first strip and the second strip after bonding; an infrared thermometer for real-time temperature measurement is also provided above the heating sealing cover.
10. The continuous composite equipment for metal composite welding strips as described in claim 5, characterized in that, The cooling device includes a cooling cover with cooling water pipes connected to an external circulating cooling water source; the finished product winding device includes a winding drum for rotating and winding the cooled finished product strip.