Automatic copper-aluminum bar butt-welding machine and butt-welding method

Abstract

The invention relates to the technical field of copper-aluminum welding, and discloses an automatic copper-aluminum bar butt-welding machine and a butt-welding method.The automatic copper-aluminum bar butt-welding machine comprises a workbench, a feeding assembly used for feeding is arranged on the left side of the upper surface of the workbench, and a discharging assembly used for discharging is arranged on the right side of the upper surface of the workbench; and a welding assembly for butt-welding the copper-aluminum bar is arranged on the upper surface of the workbench and located between the feeding assembly and the discharging assembly. According to the automatic welding device for the copper-aluminum bars, the copper-aluminum bars pushed out by the discharging assembly are stacked through the stacking assembly, the stacked copper-aluminum bars are conveyed to the welding assembly through the material moving assembly to be welded, finally, the welded copper-aluminum bars are moved out of the welding assembly through the discharging assembly, and the welding strength is detected through the detection assembly in the conveying-out process; the equipment integration degree is high, all procedures are tightly matched, automatic stacking and butt-welding operation of the copper-aluminum bars is achieved, the labor cost is reduced, and the machining efficiency and quality are effectively improved.

Description

Technical Field

[0001] The invention relates to the technical field of copper-aluminum welding, and in particular to an automatic copper-aluminum bar butt welding machine and a butt welding method. Background Art

[0002] Copper-aluminum busbars are key conductive components in power transmission and electrical equipment and are widely used in new energy batteries, power distribution cabinets, electric vehicles, industrial equipment and other fields. Due to the complementary properties of copper and aluminum in terms of conductivity, cost and weight, the demand for copper-aluminum dissimilar metal connections is growing.

[0003] Butt welding is actually resistance welding. Its welding principle is to use the resistance heat and a large amount of plastic deformation energy of the welding area itself to make the two separated metal atoms close to the lattice distance to form a metal bond, and produce a sufficient amount of common grains on the bonding surface to obtain a welding point, weld or butt joint. However, there are still the following problems in the welding process: 1. Before welding, workers need to manually stack copper and aluminum bars, and then place the stacked copper and aluminum bars on the welding station. Not only is it easy for the copper and aluminum bars to be misplaced, but also during pressurized butt welding, the air between the stacked copper and aluminum bars is easily offset when discharged, affecting product quality. In addition, since workers need to put their hands into the butt welding machine to place the copper and aluminum bars, it is dangerous. 2. After the butt welding is completed, cold welding is prone to occur between the copper and aluminum bars. The cold welding of the copper and aluminum bars will directly affect the quality of subsequent copper and aluminum bar processing. Therefore, how to eliminate the cold welding of the copper and aluminum bars after butt welding is an urgent problem that needs to be solved.

[0004] 3. The cleanliness of the contact surface between the stacked copper and aluminum bars also greatly affects the strength of the copper and aluminum bars after butt welding. Therefore, how to solve the problem of automated cleaning of the contact surface between the stacked copper and aluminum bars is also an urgent problem to be solved. Summary of the invention

[0005] Technical issues solved In view of the deficiencies in the prior art, the present invention provides an automated copper-aluminum bar butt welding machine, which is mainly used to solve the problem that workers need to manually stack the copper-aluminum bars before welding and then place the stacked copper-aluminum bars on a welding station, which is not only prone to misalignment of the copper-aluminum bars, but also prone to displacement when the air between the stacked copper-aluminum bars is discharged during pressurized butt welding, thus affecting product quality. In addition, since workers need to put both hands into the butt welding machine to place the copper-aluminum bars, there is a certain degree of danger. After the butt welding is completed, cold welds are prone to occur between the copper-aluminum bars, which directly affects the quality of subsequent copper-aluminum bar processing. At the same time, the cleanliness of the contact surface between the stacked copper bars and the aluminum bars also greatly affects the strength of the copper-aluminum bars after butt welding. Therefore, how to solve the problem of automated cleaning of the contact surface between the stacked copper bars and the aluminum bars is also an urgent problem to be solved.

[0006] Technical Solution To achieve the above object, the present invention provides the following technical solutions: An automated copper-aluminum bar welding machine comprises a workbench, a loading assembly for loading is provided on the upper surface of the workbench and located at the left side, a unloading assembly for unloading is provided on the upper surface of the workbench and located at the right side, a welding assembly for unloading copper-aluminum bars is provided on the upper surface of the workbench and located between the loading assembly and the unloading assembly, the unloading assembly comprises an unloading bracket fixedly connected to the upper surface of the workbench and located at the right side of the welding assembly, an unloading conveyor belt for conveying the fixedly connected workpiece is provided in the unloading bracket, and a detection device for detecting the workpiece is provided on the unloading bracket The loading assembly comprises a loading bracket fixedly connected to the upper surface of the workbench, the upper surface of the loading bracket is provided with a discharging assembly for outputting raw materials, the upper surface of the loading bracket and the middle position thereof is provided with a stacking assembly for stacking the output copper bars and aluminum bars, the upper surface of the loading bracket and the unloading bracket are respectively provided with a moving assembly for delivering the stacked copper and aluminum bars to the welding assembly and for moving the fixedly connected workpieces out, a cleaning assembly for cleaning the contact surfaces of the copper bars and the aluminum bars is provided at one end of the moving assembly on the loading bracket and at the rear end of the discharging assembly.

[0007] The discharging assembly further comprises a storage assembly one and a storage assembly two which are arranged on a loading bracket and are located at the rear end and one side position of the material moving assembly, the storage assembly one comprises a storage box one which is fixedly connected to the upper surface of the loading bracket, a avoidance opening is provided at the middle position of the upper surface of the loading bracket, a feeding conveyor is provided in the avoidance opening, and a surface of the feeding conveyor is provided with a plurality of rubber pushing blocks at the same intervals, the bottom of the storage box one is provided with a notch one which penetrates through for avoiding the rubber pushing blocks, the storage assembly two comprises a storage box two which is fixedly connected to the upper surface of the loading bracket, a notch two which penetrates through is provided at the bottom of the storage box two, a slide rail cross plate is fixedly connected to the upper surface of the loading bracket and at a position passing through the notch two, a pushing rack is slidably connected in the notch two, a multi-section electric push rod which enables the pushing rack to move horizontally is fixedly connected between one side of the storage box two and one side of the pushing rack, and two symmetrical guide rods are provided on one side of the storage box two, and the two guide rods pass through the pushing rack and are slidably connected thereto.

[0008] Based on the above scheme, the stacking assembly includes two U-shaped frames symmetrically fixedly connected to the upper surface of the loading bracket, an inverted linear motor module 1 is fixedly connected between the two U-shaped frames, one side of the mover of the linear motor module 1 is fixedly connected to a cylinder 2, and the other end of the cylinder 2 is fixedly connected to a pneumatic gripper suction cup.

[0009] As a further scheme of the present invention, the material moving assembly includes a fixed bracket fixedly connected to the upper surface of the loading bracket and the upper surface of the unloading bracket, one side of the fixed bracket is fixedly connected to an inverted linear motor module 2, one side of the mover of the linear motor module 2 is fixedly connected to a parallel clamping cylinder, and the two clamping jaws of the parallel clamping cylinder are each provided with a clamping assembly, and the clamping assembly includes two clamping plates 1 fixedly connected to the two clamping jaws, one side of the clamping plate 1 is provided with two circular grooves 1, and the two circular grooves 1 are fixedly connected in the two circular grooves 1, and the two limit rods are slidably connected with clamping plates 2, one side of the clamping plate 2 and located at the sliding position of the limit rod are provided with circular grooves 2, and a tension spring is fixedly connected between the inner walls of one side of the corresponding circular groove 1 and the circular groove 2.

[0010] Furthermore, the cleaning component includes a connecting bracket 1 fixedly connected to the bottom of one end of the fixed bracket, the bottom of the connecting bracket 1 is fixedly connected to a fixing plate, the lower surface of the fixing plate is bonded with a dust-absorbing cotton 1 for wiping the upper surface of the raw material output in the storage component 1, and an avoidance groove is provided on the upper surface of the slide rail cross plate and at a position on one side of the storage box 2, and the avoidance groove is provided with a dust-absorbing cotton 2 for wiping the lower surface of the raw material in the storage box 2.

[0011] On the basis of the above scheme, the welding assembly includes a welding bracket fixedly connected to the upper surface of the workbench, the upper surface of the welding bracket is fixedly connected to a fixed table, the upper surface of the fixed table is fixedly connected to a plurality of mutually symmetrical support rods, the top ends of the plurality of support rods are fixedly connected to the support table, the upper surface of the support table is provided with an electrode 1, the top of the welding bracket is fixedly connected to a welding main machine, one side of the welding main machine is fixedly connected to an organic arm, one end of the upper surface of the machine arm is fixedly connected to a cylinder 1, the output end of the cylinder 1 is fixedly connected to an end plate through the lower surface of the machine arm, the lower surface of the end plate is provided with an electrode 2, one side of the electrode 2 is fixedly connected to a connecting copper plate 2, one side of the electrode 1 is fixedly connected to a connecting copper plate 1, the other ends of the connecting copper plate 1 and the connecting copper plate 2 are respectively connected to the positive and negative electrodes in the welding main machine, and a straightening component for straightening the stacked copper and aluminum bars is provided on the welding bracket and on both sides of the fixed table.

[0012] As a further scheme of the present invention, the straightening assembly includes two U-shaped rods fixedly connected to the upper surface of the welding bracket and located on both sides of the fixed platform, two symmetrical round rods are fixedly connected between the opposite sides of the two U-shaped rods, two symmetrical slides are slidably connected to the two round rods, two mirror-image straightening frames are fixedly connected to the opposite sides of the two slides, two symmetrical groups of mounting holes are opened on the two slides, and each group has multiple holes, and slides are slidably connected to the multiple support rods, and cylinder three is provided between the upper surface of the slide and the lower surface of the support platform, connecting rods are rotatably connected between the two sides of the slide and the opposite sides of the two slides, and connecting rods are rotatably connected between the two sides of the slide and the opposite sides of the two slides.

[0013] Furthermore, the detection component includes an electric telescopic rod 1 fixedly connected to the inner walls on both sides of the blanking bracket, one end of the two electric telescopic rods 1 are fixedly connected to a connecting bracket 2, one end of the two connecting brackets 2 are fixedly connected to a lower clamping plate, the upper surface of the lower clamping plate is fixedly connected to two symmetrical sliding rods, the two sliding rods are slidably connected to an upper clamping plate, one side of the upper clamping plate and the lower clamping plate are fixedly connected to a square plate, a pressure sensor is provided on the upper surface of the square plate on one side of the lower clamping plate, a pneumatic push rod is provided on the upper surface of the pressure sensor, and the top of the pneumatic push rod is fixed to the lower surface of the square plate on one side of the upper clamping plate, and a groove is provided on the upper surface of the lower clamping plate, and a pressure sensor is provided in the groove. A distance measuring sensor, wherein the distance measuring sensor and the pressure sensor are electrically connected, a waste processing component for discharging defective products is provided between the inner walls on both sides of the unloading conveyor belt and at the rear end position of the detection component, the waste processing component comprises an L-shaped plate fixedly connected to the rear end position of the upper surface of the unloading conveyor belt, one side of the L-shaped plate is fixedly connected to an electric telescopic rod 2, one end of the electric telescopic rod 2 passes through one side of the L-shaped plate and is fixedly connected to a material pushing plate, one side of the upper surface of the unloading conveyor belt is fixedly connected to an inclined plate used in conjunction with the material pushing plate, the upper surface of the workbench and located on one side of the unloading conveyor belt is provided with a waste conveyor belt used in conjunction with the inclined plate, and the pressure sensor is electrically connected to the electric telescopic rod 2.

[0014] On the basis of the above-mentioned scheme, one end of the material moving assembly located on the unloading bracket is provided with a cooling assembly for cooling the copper and aluminum bars after welding, and the cooling assembly includes two L-shaped connecting plates fixedly connected to one side of the fixed bracket located on the unloading bracket, and an atomizing nozzle is provided at one end of the L-shaped connecting plate, and the upper surface of the atomizing nozzle is provided with a cold water joint connected to the external cold water pipe, and the upper bracket is fixedly connected to the lower part of the cross bar of the L-shaped connecting plate, and the front end position of the upper surface of the unloading conveyor belt is fixedly connected to the lower bracket, and the upper surface of the lower bracket and the lower surface of the upper bracket are both bonded with absorbent cotton for absorbing moisture on the surface of the workpiece.

[0015] An automated copper-aluminum bar welding method comprises the following steps: S1: First, place the copper bar and the aluminum bar into the storage component 1 and the storage component 2 respectively, then start the feeding conveyor to rotate, during the rotation, the rubber push block passes through the slot 1 under the storage box, and pushes out the copper bar at the bottom for transportation, and at the same time, start the multi-section electric push rod to shrink, and during the shrinkage, it will drive the push rack to slide along the slot 2 under the storage box 2, and push out the aluminum bar at the bottom while sliding. In the process of pushing out the copper bar, the upper surface of the copper bar contacts with the dust-absorbing cotton 1, and the dust on the upper surface is wiped off, and in the process of pushing out the aluminum bar, the lower surface of the aluminum bar contacts with the dust-absorbing cotton 2, and the dust on the lower surface is wiped off; S2: After the aluminum row is pushed out, the second cylinder is started to extend so that the pneumatic gripper sucker contacts the aluminum row, and then the pneumatic gripper sucker is started to adsorb the aluminum row. After the adsorption is completed, the second cylinder is retracted to move the pneumatic gripper sucker upward, and then the pneumatic linear motor module 1 drives the pneumatic gripper sucker to move horizontally until it moves to the top of the pushed out copper row. The second cylinder is started to extend so that the aluminum row is stacked on the top of the copper row, and then the pneumatic gripper sucker is closed to separate the aluminum row from it, and then the pneumatic gripper sucker is returned to the initial position, and so on. S3: After the copper bar and the aluminum bar are stacked, the stacked copper bar and the aluminum bar are sent to between the two clamping plates 2 at the rear end by the feeding conveyor belt, and then the parallel clamping claw cylinder is started to retract the two clamping claws, and at the same time, the clamping plates 1 and 2 are driven to move towards each other. When the two clamping plates 2 come into contact with the stacked copper bar and the aluminum bar, the clamping claws continue to retract. At this time, the tension spring is stretched under force. When the clamping claws can no longer retract, the copper bar and the aluminum bar are clamped. Then, the linear motor module 2 is started to send the copper bar and the aluminum bar to the welding assembly for welding. After the placement is completed, the linear motor module 2 and the parallel clamping claw cylinder return to the initial position to prepare for the next stacked copper bar and aluminum bar to be transported; S4: When the copper bar and the aluminum bar need to be welded, start the cylinder 1 to extend, and while the cylinder 1 extends, drive the end plate and the electrode 2 at one end thereof to move downward until the electrode 2 and the upper surface of the aluminum bar are pressed tightly between the electrode 1 and the electrode 2, and then pass an electric current through the contact surface of the copper bar and the aluminum bar and the resistance heat generated by the electric current flowing through the adjacent area to process them into a molten or plastic state, and form a bond under pressure, so as to complete the butt welding of the copper and aluminum bars; S5: Before welding the copper bar and the aluminum bar, start the cylinder three to extend it. During the extension process, the slide plate is driven to slide downward along the support rod. During the downward sliding process of the support rod, the connecting rods rotating on both sides simultaneously drive the two slides to move toward each other along the round rod. While the slides move, the straightening frames on the opposite sides approach each other to further straighten the stacked copper bar and aluminum bar. After the welding is completed, start the cylinder three to retract so that the slide returns to the initial position, thereby limiting the stacked copper bar and aluminum bar during welding, and preventing the stacked copper bar and aluminum bar from running off the track during the process of air discharge and close fitting between the stacked copper bar and aluminum bar when the electrode two squeezes the stacked copper bar and aluminum bar. S6: After welding is completed, the copper-aluminum bar that has been welded is removed from the welding assembly by the material moving assembly on the material unloading bracket. When passing through the atomizing nozzle during the removal process, the atomizing nozzle sprays cold water so that the mist-like cold water adheres to the surface of the copper-aluminum bar. After the temperature is lowered, the copper-aluminum bar continues to be driven to move toward the unloading conveyor belt. During the process, the upper and lower surfaces of the copper-aluminum bar are in contact with the absorbent cotton, and the copper-aluminum bar continues to be moved so that it is placed on the unloading conveyor belt; S7: After the copper and aluminum bars are cooled, they are placed on the unloading conveyor belt and then conveyed between the detection components. Two electric telescopic rods are simultaneously started to extend, so that the two sets of upper clamping plates and lower clamping plates simultaneously clamp the upper and lower halves of the copper and aluminum bars after welding. After the clamping is completed, the pneumatic push rod is started to extend, and the pressure sensor and the distance sensor are operated at the same time. When the pressure sensor withstands the pressure to the standard and the value of the distance sensor is still the initial value, the welding is qualified. If the value of the pressure sensor is floating within the qualified range and the value of the distance sensor rises, the welding is unqualified. S8: After the inspection is completed, the pneumatic push rod and the electric telescopic rod 1 return to the initial position to wait for the inspection of the next workpiece. After the inspection reaches the unqualified product, the distance sensor transmits the signal to the electric telescopic rod 2. When the unqualified product passes through the material push plate, the electric telescopic rod 2 starts to extend, thereby driving the material push plate to move and push the unqualified product onto the inclined plate, and slides through the inclined plate to the waste conveyor belt for transportation.

[0016] Beneficial Effects Compared with the prior art, the present invention provides an automated copper-aluminum bar welding machine and welding method, which have the following beneficial effects: 1. The present invention stacks the copper-aluminum bars pushed out by the discharging assembly through the stacking assembly, then sends the stacked copper-aluminum bars to the welding assembly for welding through the moving assembly, and finally moves the welded copper-aluminum bars out of the welding assembly through the unloading assembly. During the sending process, the welding strength is detected by the detection assembly. The equipment has a high degree of integration and the various processes are closely coordinated to realize the automated stacking and welding operation of the copper-aluminum bars, which not only reduces labor costs but also effectively improves processing efficiency and quality.

[0017] 2. The present invention can load and unload copper and aluminum bars through the material moving assembly provided by the linear motor module 2 and the parallel clamping cylinder, so that the loading and unloading process can be automated, and manual placement is not required, thus avoiding accidental injuries caused by manual operation.

[0018] 3. The present invention is provided with a straightening assembly, and after the stacked copper bars and aluminum bars are sent to the electrode one, the copper bars and aluminum bars can be straightened by the straightening frame thereon, thereby realizing the position limitation of the stacked copper bars and aluminum bars during welding, and preventing the stacked copper bars and aluminum bars from deviating during the process of air discharge and tight fitting between the stacked copper bars and aluminum bars when the electrode two squeezes the stacked copper bars and aluminum bars.

[0019] 4. The present invention can detect the copper and aluminum bars after welding through the detection component to prevent the copper and aluminum bars from having cold welds due to machine failure, thereby affecting subsequent processing. In addition, the waste processing component can send unqualified products out of the unloading conveyor belt when they are detected to prevent qualified products from being mixed with unqualified products.

[0020] 5. The present invention uses a discharging assembly and a stacking assembly in combination, so there is no need to manually stack the copper bars and the aluminum bars, thus avoiding fatigue caused by long-term work, reducing labor costs and further improving the degree of automation of the device.

[0021] 6. The present invention is provided with a cleaning component, which can wipe the upper and lower surfaces of the copper bar and the aluminum bar respectively while pushing them out from the first storage box and the second storage box, thereby ensuring the cleanliness of the contact surfaces between the two and avoiding affecting the subsequent welding operation.

[0022] 7. The present invention can cool down the temperature of the copper-aluminum bar after welding is completed through the cooling component, so as to avoid the high temperature of the copper-aluminum bar causing damage to the unloading conveyor belt and the workers. The absorbent cotton can clean the residual moisture on the surface of the copper-aluminum bar after the copper-aluminum bar is cooled, so as to avoid the situation where a large amount of dust adheres to the surface of the copper-aluminum bar due to moisture. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 A schematic diagram of the three-dimensional structure of an automatic copper-aluminum bar welding machine proposed by the present invention; Figure 2 This is a schematic diagram of the front side structure of a feeding assembly of an automated copper-aluminum bar welding machine proposed by the present invention; Figure 3 This is a schematic diagram of the welding assembly structure of an automatic copper-aluminum bar welding machine proposed by the present invention; Figure 4This is a schematic structural diagram of a blanking assembly of an automated copper-aluminum bar welding machine proposed by the present invention; Figure 5 This is a schematic diagram of the rear structure of a feeding assembly of an automated copper-aluminum bar welding machine proposed by the present invention; Figure 6 A schematic diagram of the structure of a material storage component of an automated copper-aluminum bar welding machine proposed by the present invention; Figure 7 This is an enlarged structural schematic diagram of a material storage component 2 of an automated copper-aluminum bar welding machine proposed by the present invention; Figure 8 This is a schematic diagram of the structure of a material transfer assembly of an automated copper-aluminum bar welding machine proposed by the present invention; Fig. 9 This is a schematic diagram of the enlarged structure of a parallel clamping cylinder of an automated copper-aluminum bar welding machine proposed by the present invention; Fig.10 The invention provides an automatic copper-aluminum row welding machine. Fig. 9 A partial enlarged schematic diagram of Fig.11 This is a schematic diagram of the structure of a straightening assembly of an automated copper-aluminum bar welding machine proposed by the present invention; Fig.12 This is a schematic diagram of the structure of a detection component of an automated copper-aluminum bar welding machine proposed by the present invention; Fig.13 The invention provides an automatic copper-aluminum row welding machine. Fig.12 A schematic diagram of the enlarged structure of part A; Fig.14 This is a schematic diagram of the structure of a waste material processing component of an automated copper-aluminum bar welding machine proposed by the present invention; Fig.15 The present invention provides a schematic diagram of the structure of a cooling component of an automated copper-aluminum bar welding machine.

[0024] In the figure: 1. workbench; 2. loading assembly; 3. welding assembly; 301. welding bracket; 302. welding main machine; 303. machine arm; 304. cylinder 1; 305. fixed table; 306. support rod; 307. support table; 308. electrode 1; 309. end plate; 310. electrode 2; 311. connecting copper plate 1; 312. connecting copper plate 2; 4. unloading assembly; 5. loading bracket; 6. discharging assembly; 601. storage assembly 1; 6011. avoidance port; 6012. feeding conveyor belt; 6013. rubber push block; 6014. storage box 1; 6015. Missing slot 1; 602, material storage assembly 2; 6021, material storage box 2; 6022, missing slot 2; 6023, material pusher; 6024, multi-section electric push rod; 6025, guide rod; 7, stacking assembly; 701, U-shaped frame; 702, linear motor module 1; 703, cylinder 2; 704, pneumatic gripper suction cup; 705, slide rail cross plate; 8, material transfer assembly; 801, fixed bracket; 802, linear motor module 2; 803, parallel gripper cylinder; 804, clamping assembly; 8041, clamping plate 1; 8042, circular slot 1; 8043, limit rod; 8044, clamp Plate 2; 8045, round groove 2; 8046, tension spring; 9, cleaning component; 901, connecting bracket 1; 902, fixing plate; 903, dust cotton 1; 904, avoidance groove; 905, dust cotton 2; 10, straightening component; 1001, U-shaped rod; 1002, round rod; 1003, slide; 1004, mounting hole; 1005, straightening frame; 1006, cylinder 3; 1007, slide; 1008, connecting rod; 11, unloading bracket; 12, unloading conveyor belt; 13, detection component; 1301, electric telescopic rod 1; 1302, connecting bracket 2; 13 03. Lower clamping plate; 1304. Sliding rod; 1305. Upper clamping plate; 1306. Square plate; 1307. Pressure sensor; 1308. Pneumatic push rod; 1309. Groove; 1310. Distance sensor; 14. Waste handling assembly; 1401. L-shaped plate; 1402. Electric telescopic rod 2; 1403. Material push plate; 1404. Inclined plate; 1405. Waste conveyor belt; 15. Cooling assembly; 1501. L-shaped connecting plate; 1502. Atomizing nozzle; 1503. Cold water joint; 1504. Upper bracket; 1505. Lower bracket; 1506. Water-absorbing cotton. DETAILED DESCRIPTION

[0025] In order to make the purpose, technical solution and advantages of the present invention more clearly understood, the present invention is further described in detail below through embodiments and in conjunction with the accompanying drawings. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0026] The serial numbers assigned to the components herein, such as "first", "second", etc., are only used to distinguish the objects described and do not have any order or technical meaning. The "connection" and "coupling" mentioned in the present invention, unless otherwise specified, include direct and indirect connections (couplings). In the description of the present invention, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", etc., indicating the orientation or position relationship are based on the orientation or position relationship shown in the accompanying drawings, which is 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 a limitation to the present invention.

[0027] In the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0028] Reference Figure 1-Figure 15, an automatic copper-aluminum bar welding machine, comprising a workbench 1, a loading assembly 2 for loading is provided on the upper surface of the workbench 1 and located at the left position, a unloading assembly 4 for unloading is provided on the upper surface of the workbench 1 and located at the right position, a welding assembly 3 for unloading the copper-aluminum bar is provided on the upper surface of the workbench 1 and located between the loading assembly 2 and the unloading assembly 4, the unloading assembly 4 comprises an unloading bracket 11 fixedly connected to the upper surface of the workbench 1 by bolts and located on the right side of the welding assembly 3, a unloading conveyor belt 12 for conveying the welded workpiece is provided in the unloading bracket 11, a detection assembly 13 for detecting the workpiece is provided on the unloading bracket 11, the loading assembly 2 comprises a loading bracket 5 fixedly connected to the upper surface of the workbench 1 by bolts, a discharging assembly 6 for outputting raw materials is provided on the upper surface of the loading bracket 5, and a discharging assembly 6 for outputting raw materials is provided on the upper surface of the loading bracket 5 and located in the middle thereof There is a stacking component 7 for stacking the output copper and aluminum bars. The upper surface of the loading bracket 5 and the unloading bracket 11 are respectively provided with a moving component 8 for delivering the stacked copper and aluminum bars to the welding component 3 and removing the welded workpieces. A cleaning component 9 for cleaning the contact surfaces of the copper and aluminum bars is provided at one end of the moving component 8 on the loading bracket 5 and at the rear end of the unloading component 6. When the copper and aluminum bars need to be welded, the copper and aluminum bars pushed out by the unloading component 6 are stacked by the stacking component 7, and then the stacked copper and aluminum bars are delivered to the welding component 3 for welding by the moving component 8. Finally, the welded copper and aluminum bars are moved out of the welding component 3 by the unloading component 4. During the delivery process, the welding strength is detected by the detection component 13. The equipment has a high degree of integration and the various processes are closely coordinated to realize the automated stacking and welding operation of the copper and aluminum bars.

[0029] In the present invention, the discharging assembly 6 includes a storage assembly 1 601 and a storage assembly 2 602 which are arranged on the feeding bracket 5 and located at the rear end and one side of the material moving assembly 8. The storage assembly 1 601 includes a storage box 1 6014 which is fixedly connected to the upper surface of the feeding bracket 5 by bolts. A clearance opening 6011 is provided in the middle position of the upper surface of the feeding bracket 5. A feeding conveyor belt 6012 is provided in the clearance opening 6011. The surface of the feeding conveyor belt 6012 is provided with the same spacing. A plurality of rubber push blocks 6013 are provided at the bottom of the material storage box 1 6014, and a notch 6015 is provided through it for avoiding the rubber push block 6013. The material storage assembly 2 602 includes a material storage box 2 6021 fixedly connected to the upper surface of the feeding bracket 5 by bolts, and a notch 6022 is provided through it at the bottom of the material storage box 2 6021. A slide rail cross plate 705 is fixedly connected to the upper surface of the feeding bracket 5 and passes through the notch 6022 by bolts. A pushing rack 6023 is slidably connected inside 6022, and a multi-section electric push rod 6024 is fixedly connected between one side of the storage box 2 6021 and one side of the pushing rack 6023 by bolts to enable the pushing rack 6023 to move horizontally. One side of the storage box 2 6021 is provided with two symmetrical guide rods 6025, and the two guide rods 6025 pass through the pushing rack 6023 and are slidably connected thereto. First, the copper bar and the aluminum bar are placed in the storage component 1 601 and the storage component 2 602 respectively, and then the feeding conveyor belt 6012 is started to rotate. During its rotation, the rubber push block 6013 passes through the notch 1 6015 under the storage box 1 6014, and pushes out the copper bar at the bottom for transportation. At the same time, the multi-section electric push rod 6024 is started to shrink, and during its shrinkage, it will drive the pushing rack 6023 to slide along the notch 2 6022 under the storage box 2 6021, and push out the aluminum bar at the bottom while sliding.

[0030] In order to solve the technical problem of stacking copper and aluminum bars, the stacking assembly 7 includes two U-shaped frames 701 symmetrically connected to the upper surface of the feeding bracket 5 by bolts, an inverted linear motor module 1 702 is fixedly connected between the two U-shaped frames 701 by bolts, one side of the mover of the linear motor module 1 702 is fixedly connected to a cylinder 2 703 by bolts, and the other end of the cylinder 2 703 is fixedly connected to a pneumatic gripper suction cup 704 by bolts. After the aluminum bar is pushed out, the cylinder 2 703 is started to extend the pneumatic gripper. The suction cup 704 contacts the aluminum row, and then the pneumatic gripper suction cup 704 is started to adsorb the aluminum row. After the adsorption is completed, the cylinder 2 703 is retracted to move the pneumatic gripper suction cup 704 upward, and then the pneumatic linear motor module 1 702 drives the pneumatic gripper suction cup 704 to move horizontally until it moves to the top of the pushed out copper row. The cylinder 2 703 is started to extend to make the aluminum row stacked on the top of the copper row, and then the pneumatic gripper suction cup 704 is closed to separate the aluminum row from it, and then the pneumatic gripper suction cup 704 is returned to the initial position, and this cycle is repeated.

[0031] In order to solve the technical problem of conveniently delivering the stacked copper bars and aluminum bars to the welding assembly 3, the material moving assembly 8 includes a fixed bracket 801 fixedly connected to the upper surface of the loading bracket 5 and the upper surface of the unloading bracket 11 by bolts, one side of the fixed bracket 801 is fixedly connected to an inverted linear motor module 802 by bolts, one side of the mover of the linear motor module 802 is fixedly connected to a parallel clamping cylinder 803 by bolts, and the two clamping jaws of the parallel clamping cylinder 803 are provided with a clamping assembly 804, and the clamping assembly 804 includes two clamping plates 8041 fixedly connected to the two clamping jaws by bolts, one side of the clamping plate 8041 is provided with two circular grooves 8042, and the two circular grooves 8042 are fixedly connected with limit rods 8043 by bolts, and the two limit rods 8043 are slidably connected with clamping plates 8044, and one side of the clamping plate 8044 and the position where the limit rod 8043 slides are A circular groove 8045 is provided, and a tension spring 8046 is welded between the corresponding circular groove 1 8042 and the inner wall of one side of the circular groove 8045. After the copper bar and the aluminum bar are stacked, the stacked copper bar and the aluminum bar are sent to between the two clamping plates 8044 at the rear end through the feeding conveyor 6012, and then the parallel clamping cylinder 803 is started to shrink the two clamping jaws, and at the same time, the clamping plate 8041 and the clamping plate 8044 are driven to move towards each other. When the two clamping plates 8044 contact the stacked copper bar and aluminum bar, the clamping jaws continue to shrink. At this time, the tension spring 8046 is stretched under force. When the clamping jaws can no longer shrink, the copper bar and the aluminum bar are clamped. Then the linear motor module 802 is started to send the copper bar and the aluminum bar to the welding assembly 3 for preparation for welding. After the placement is completed, the linear motor module 802 and the parallel clamping jaw cylinder 803 return to the initial position to prepare for the next stacked copper bar and aluminum bar to be transported.

[0032] In order to solve the technical problem that dust exists on the contact surface of the copper bar and the aluminum bar, thereby affecting welding, the cleaning component 9 includes a connecting bracket 901 fixedly connected to the bottom of one end of the fixed bracket 801 by bolts, and the bottom of the connecting bracket 901 is fixedly connected to a fixing plate 902 by bolts. The lower surface of the fixing plate 902 is bonded with a dust-absorbing cotton 903 for wiping the upper surface of the output raw material in the storage component 601, and the upper surface of the slide rail cross plate 705 and the side position of the storage box 6021 are provided with an avoidance groove 904, and the avoidance groove 904 is provided with a dust-absorbing cotton 903 for wiping the upper surface of the output raw material in the storage box 6021. The dust-absorbing cotton 905 is used to wipe the lower surface of the raw material. In the process of pushing out the copper bar, the upper surface of the copper bar contacts with the dust-absorbing cotton 903 to wipe the dust on its upper surface. In the process of pushing out the aluminum bar, the lower surface of the aluminum bar contacts with the dust-absorbing cotton 905 to wipe the dust on its lower surface. Through the cleaning component 9, the upper and lower surfaces of the copper bar and the aluminum bar can be wiped respectively while being pushed out from the storage box 1 6014 and the storage box 2 6021, so as to ensure the cleanliness of the contact surface between the two and avoid affecting the subsequent welding operation.

[0033] In order to solve the problem of defective products due to misplaced stacking and accidental injuries caused by manual placement, the welding assembly 3 includes a welding bracket 301 fixedly connected to the upper surface of the workbench 1 by bolts, the upper surface of the welding bracket 301 is fixedly connected to a fixing table 305 by bolts, and the upper surface of the fixing table 305 is welded with a plurality of mutually symmetrical support rods 306, and the top ends of the plurality of support rods 306 are fixedly connected to a support table 307 by bolts, and the upper surface of the support table 307 is provided with an electrode 308. The top of the welding bracket 301 is fixedly connected to the welding host 302 by bolts, and one side of the welding host 302 is fixedly connected to the machine arm 303 by bolts. One end of the upper surface of the machine arm 303 is fixedly connected to the cylinder 1 304 by bolts, and the output end of the cylinder 1 304 passes through the lower surface of the machine arm 303 and is fixedly connected to the end plate 309 by bolts. The lower surface of the end plate 309 is provided with an electrode 2 310, and one side of the electrode 2 310 is welded with a connecting copper plate 2 312, and one side of the electrode 1 308 is welded with a connecting copper plate The other end of the connecting copper plate 1 311 and the connecting copper plate 2 312 are respectively connected to the positive and negative electrodes in the welding host 302. A straightening assembly 10 for straightening the stacked copper and aluminum bars is provided on the welding bracket 301 and located on both sides of the fixing platform 305. When the copper bar and the aluminum bar need to be welded, the cylinder 1 304 is started to extend. When the cylinder 1 304 extends, the end plate 309 and the electrode 2 310 at one end thereof are driven to move downward until the electrode 2 310 is on the upper surface of the aluminum bar, and the copper bar and the aluminum bar are pressed tightly. Between electrode 1 308 and electrode 2 310, an electric current is then passed, and the resistance heat generated by the electric current flowing through the contact surface of the copper bar and the aluminum bar and the adjacent area is used to process them into a molten or plastic state, and a bond is formed under pressure, thereby completing the butt welding of the copper and aluminum bars. The material moving assembly 8 can be used to load and unload the copper and aluminum bars through the linear motor module 2 802 and the parallel clamping cylinder 803, so that the loading and unloading process can be automated, without the need for manual placement, thereby avoiding accidental injuries caused by manual operation.

[0034] In order to solve the technical problems that traditional equipment relies on manual positioning and parameter adjustment, has poor welding consistency, and is difficult to adapt to large-scale production needs, the straightening assembly 10 includes two U-shaped rods 1001 that are fixedly connected to the upper surface of the welding bracket 301 by bolts and are located on both sides of the fixed platform 305, two symmetrical round rods 1002 are fixedly connected between the opposite sides of the two U-shaped rods 1001 by bolts, two symmetrical slides 1003 are slidably connected to the two round rods 1002, and two mirror-image straightening frames 1005 are fixedly connected to the opposite sides of the two slides 1003 by bolts. The outer surface of the straightening frame 1005 is coated with an insulating layer. Two symmetrical groups of mounting holes 1004 are opened on the two slides 1003, and each group has multiple holes. A slide plate 1007 is slidably connected to the multiple support rods 306. A cylinder 3 1006 is provided between the upper surface of the slide plate 1007 and the lower surface of the support platform 307. Connecting rods 1008 are rotatably connected between the two sides of the slide plate 1007 and the opposite sides of the two slides 1003. Before welding the copper bar and the aluminum bar, the cylinder 3 1006 is started to extend, and the slide plate 1007 is driven to move along the support rod 306 during the extension process. 06 slides downward, and during the downward sliding of the support rod 306, the connecting rods 1008 rotating on both sides thereof simultaneously drive the two slides 1003 to move toward each other along the round rod 1002, and while the slides 1003 move, the straightening frames 1005 on the opposite sides thereof approach each other, and further straighten the stacked copper and aluminum bars. After completion, the cylinder three 1006 is started to shrink, so that the slides 1003 return to the initial position. By providing the straightening assembly 10, after the stacked copper and aluminum bars are delivered to the electrode one 308, the straightening frames 1005 thereon can be used to straighten the copper and aluminum bars. The copper bar and the aluminum bar are straightened so that they are perfectly stacked, thereby achieving position limitation of the stacked copper bar and aluminum bar during welding, preventing the electrode 2 310 from deviating during the process of air discharge and tight fit between the stacked copper bar and the aluminum bar when squeezing the stacked copper bar and the aluminum bar, thereby increasing the consistency of welding and adapting to large-scale production needs. The installation position of the straightening frame 1005 on the slide 1003 can be changed through the multiple groups of mounting holes 1004, thereby adapting to the straightening of copper bars and aluminum bars of different sizes, thereby increasing the applicability of the straightening assembly 10.

[0035] In order to solve the problem of cold welding after welding, which affects the subsequent processing of copper and aluminum bars, the detection component 13 includes an electric telescopic rod 1301 fixedly connected to the inner walls of both sides of the blanking bracket 11 by bolts, one end of the two electric telescopic rods 1301 are fixedly connected to the connecting bracket 2 1302 by bolts, one end of the two connecting brackets 2 1302 are fixedly connected to the lower clamping plate 1303 by bolts, two symmetrical sliding rods 1304 are welded to the upper surface of the lower clamping plate 1303, the two sliding rods 1304 are slidably connected to the upper clamping plate 1305, one side of the upper clamping plate 1305 and the lower clamping plate 1303 are fixedly connected by bolts with a square plate 1306, and the square plate located on one side of the lower clamping plate 1303 A pressure sensor 1307 is provided on the upper surface of the pressure sensor 1307, and a pneumatic push rod 1308 is provided on the upper surface of the pressure sensor 1307, and the top of the pneumatic push rod 1308 is fixed to the lower surface of the square plate 1306 on one side of the upper clamping plate 1305, and a groove 1309 is provided on the upper surface of the lower clamping plate 1303, and a distance sensor 1310 is provided in the groove 1309, and the distance sensor 1310 and the pressure sensor 1307 are electrically connected. A waste processing component 14 for discharging defective products is provided between the inner walls of both sides of the unloading conveyor belt 12 and at the rear end position of the detection component 13, and the waste processing component 14 includes an L-shaped plate 1401 fixedly connected to the rear end position of the upper surface of the unloading conveyor belt 12 by bolts, and the L-shaped plate 140 One side of the workbench 1 is fixedly connected with an electric telescopic rod 1402 by bolts, one end of the electric telescopic rod 1402 passes through one side of the L-shaped plate 1401 and is fixedly connected with a material push plate 1403 by bolts, one side of the upper surface of the unloading conveyor belt 12 is fixedly connected with an inclined plate 1404 used in conjunction with the material push plate 1403 by bolts, and the upper surface of the workbench 1 and located on one side of the unloading conveyor belt 12 are provided with a waste conveyor belt 1405 used in conjunction with the inclined plate 1404, and the pressure sensor 1307 is electrically connected to the electric telescopic rod 1402, so that the copper and aluminum bars after cooling are placed on the unloading conveyor belt 12 and then transferred to between the detection components 13, and then the two electric telescopic rods 1301 are started at the same time to extend, so that the two sets of upper clamping plates 1305 and The lower clamping plate 1303 clamps the upper and lower parts of the copper-aluminum bar after welding at the same time. After the clamping is completed, the pneumatic push rod 1308 is started to extend, and the pressure sensor 1307 and the distance sensor 1310 work at the same time. When the value of the distance sensor 1310 is still the initial value after the pressure sensor 1307 withstands the standard, the welding is qualified. If the value of the pressure sensor 1307 floats within the qualified range and the value of the distance sensor 1310 rises, the welding is unqualified. After the inspection is completed, the pneumatic push rod 1308 and the electric telescopic rod 1 1301 return to the initial position to wait for the inspection of the next workpiece. After the inspection reaches the unqualified product, the distance sensor 1310 transmits the signal to the electric telescopic rod 2 1402.When the unqualified products pass through the material push plate 1403, the electric telescopic rod 1402 starts to extend, thereby driving the material push plate 1403 to move and push the unqualified products onto the inclined plate 1404, and then slide through the inclined plate 1404 to the waste conveyor belt 1405 for transportation. The detection component 13 can detect the copper and aluminum bars after welding to prevent the copper and aluminum bars from not being welded together or being welded loosely due to machine failure. The waste processing component 14 can send the unqualified products out of the unloading conveyor belt 12 when the unqualified products are detected to prevent the mixing of qualified products and unqualified products.

[0036] In order to solve the technical problem of over-high temperature of the copper-aluminum bar after welding, a cooling component 15 for cooling the copper-aluminum bar after welding is provided at one end of the material moving component 8 on the unloading bracket 11. The cooling component 15 includes two L-shaped connecting plates 1501 fixedly connected to one side of the fixed bracket 801 on the unloading bracket 11 by bolts, an atomizing nozzle 1502 is provided at one end of the L-shaped connecting plate 1501, and a cold water joint 1503 connected to an external cold water pipe is provided on the upper surface of the atomizing nozzle 1502. An upper bracket 1504 is fixedly connected to the lower side of the cross bar of the L-shaped connecting plate 1501 by bolts, and a lower bracket 1505 is fixedly connected to the front end position of the upper surface of the unloading conveyor belt 12 by bolts. The upper surface of the lower bracket 1505 and the lower surface of the upper bracket 1504 are both bonded with absorbent cotton 1506 for absorbing moisture on the surface of the workpiece. The material moving assembly 8 on the material support 11 removes the copper-aluminum bar after welding from the welding assembly 3. During the removal process, when passing through the atomizing nozzle 1502, the atomizing nozzle 1502 sprays cold water to make the mist of cold water adhere to the surface of the copper-aluminum bar. After cooling, the copper-aluminum bar continues to be driven to move toward the unloading conveyor belt 12. During the process, the upper and lower surfaces of the copper-aluminum bar are in contact with the absorbent cotton 1506, and the copper-aluminum bar continues to move to be placed on the unloading conveyor belt 12. Through the cooling assembly 15, the temperature of the copper-aluminum bar can be cooled after welding to avoid the high temperature of the copper-aluminum bar causing damage to the unloading conveyor belt 12 and the staff. Through the absorbent cotton 1506, the residual moisture on the surface of the copper-aluminum bar can be cleaned after the cooling of the copper-aluminum bar to avoid the adhesion of a large amount of dust due to the wet surface of the copper-aluminum bar.

[0037] The present invention is divided into the following steps when used: S1: First, place the copper bar and the aluminum bar into the storage component 1 601 and the storage component 2 602 respectively, then start the feeding conveyor 6012 to rotate, during the rotation, the rubber push block 6013 passes through the notch 1 6015 under the storage box 1 6014, and pushes out the copper bar at the bottom for transportation, and at the same time, start the multi-section electric push rod 6024 to shrink, and during the shrinkage process, it will drive the push rack 6023 to slide along the notch 2 6022 under the storage box 2 6021, and push out the aluminum bar at the bottom while sliding, in the process of pushing out the copper bar, the upper surface of the copper bar contacts with the dust-absorbing cotton 1 903, and the dust on the upper surface is wiped, and in the process of pushing out the aluminum bar, the lower surface of the aluminum bar contacts with the dust-absorbing cotton 2 905, and the dust on the lower surface is wiped; S2: After the aluminum row is pushed out, the second cylinder 703 is started to extend so that the pneumatic gripper sucker 704 contacts the aluminum row, and then the pneumatic gripper sucker 704 is started to adsorb the aluminum row. After the adsorption is completed, the second cylinder 703 is retracted to move the pneumatic gripper sucker 704 upward, and then the pneumatic linear motor module 1 702 drives the pneumatic gripper sucker 704 to move horizontally until it moves to the top of the pushed out copper row. The second cylinder 703 is started to extend so that the aluminum row is stacked on the top of the copper row, and then the pneumatic gripper sucker 704 is closed to separate the aluminum row from it, and then the pneumatic gripper sucker 704 is returned to the initial position, and so on. S3: After the copper and aluminum bars are stacked, the stacked copper and aluminum bars are sent to between the two clamping plates 8044 at the rear end by the feeding conveyor 6012, and then the parallel clamping claw cylinder 803 is started to retract the two clamping claws, and at the same time, the clamping plates 8041 and 8044 are driven to move towards each other. When the two clamping plates 8044 contact the stacked copper and aluminum bars, the clamping claws continue to retract. At this time, the tension spring 8046 is stretched under force. When the clamping claws can no longer retract, the copper and aluminum bars are clamped. Then, the linear motor module 802 is started to send the copper and aluminum bars to the welding assembly 3 for welding. After the placement is completed, the linear motor module 802 and the parallel clamping claw cylinder 803 return to the initial position to prepare for the next stacked copper and aluminum bars to be transported. S4: When the copper bar and the aluminum bar need to be welded, the cylinder 1 304 is started to extend, and while the cylinder 1 304 is extended, the end plate 309 and the electrode 2 310 at one end thereof are driven to move downward until the electrode 2 310 and the upper surface of the aluminum bar are pressed tightly between the electrode 1 308 and the electrode 2 310, and then an electric current is passed through the contact surface of the copper bar and the aluminum bar and the resistance heat generated by the electric current flowing through the adjacent area to process them into a molten or plastic state, and form a bond under pressure, thereby completing the butt welding of the copper and aluminum bars; S5: Before welding the copper bar and the aluminum bar, start the cylinder three 1006 to extend, and during the extension process, drive the slide plate 1007 to slide downward along the support rod 306. During the downward sliding of the support rod 306, the connecting rods 1008 rotating on both sides simultaneously drive the two slides 1003 to move towards each other along the round rod 1002. While the slides 1003 move, the straightening frames 1005 on the opposite sides approach each other, and the stacked copper bar and aluminum bar are further straightened. After the welding is completed, start the cylinder three 1006 to shrink, so that the slide 1003 returns to the initial position, thereby realizing the position limitation of the stacked copper bar and aluminum bar during welding, and avoiding the deviation of the stacked copper bar and aluminum bar during the process of air discharge and close fitting between the stacked copper bar and aluminum bar when the electrode two 310 squeezes the stacked copper bar and aluminum bar; S6: After welding is completed, the copper-aluminum bar that has been welded is removed from the welding assembly 3 by the material moving assembly 8 on the material discharging bracket 11. When passing through the atomizing nozzle 1502 during the removal process, the atomizing nozzle 1502 sprays cold water to make the mist-like cold water adhere to the surface of the copper-aluminum bar. After the temperature is lowered, the copper-aluminum bar continues to be driven to move toward the material discharging conveyor belt 12. During the process, the upper and lower surfaces of the copper-aluminum bar are in contact with the absorbent cotton 1506, and the copper-aluminum bar continues to be moved to be placed on the material discharging conveyor belt 12; S7: After the copper and aluminum bars are cooled, they are placed on the unloading conveyor belt 12 and then conveyed to the detection components 13. Then, two electric telescopic rods 1301 are started to extend, so that two sets of upper clamping plates 1305 and lower clamping plates 1303 clamp the upper and lower parts of the copper and aluminum bars after welding at the same time. After the clamping is completed, the pneumatic push rod 1308 is started to extend, and the pressure sensor 1307 and the distance sensor 1310 work at the same time. When the pressure sensor 1307 withstands the pressure to the standard and the value of the distance sensor 1310 is still the initial value, the welding is qualified. If the value of the pressure sensor 1307 floats within the qualified range and the value of the distance sensor 1310 rises, the welding is unqualified. S8: After the inspection is completed, the pneumatic push rod 1308 and the electric telescopic rod 1 1301 return to the initial position to wait for the inspection of the next workpiece. After the inspection reaches the unqualified product, the distance sensor 1310 transmits the signal to the electric telescopic rod 1402. When the unqualified product passes through the material push plate 1403, the electric telescopic rod 1402 starts to extend, thereby driving the material push plate 1403 to move and push the unqualified product onto the inclined plate 1404, and slides through the inclined plate 1404 to the waste conveyor belt 1405 for transportation.

[0038] The technical features of the above embodiments may be combined arbitrarily. To make the description concise, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0039] The above-described embodiments only express several implementation methods of the present invention, and the description thereof is relatively specific and detailed, but it cannot be understood as limiting the scope of the present invention. It should be pointed out that, for a person of ordinary skill in the art, several modifications and improvements can be made without departing from the concept of the present invention, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the attached claims.

Claims

1. An automated copper-aluminum bar welding machine, comprising a workbench (1), characterized in that: A loading assembly (2) for loading materials is provided on the upper surface of the workbench (1) and located at the left side thereof; a unloading assembly (4) for unloading materials is provided on the upper surface of the workbench (1) and located at the right side thereof; a welding assembly (3) for performing butt welding on copper and aluminum bars is provided on the upper surface of the workbench (1) and located between the loading assembly (2) and the unloading assembly (4); the unloading assembly (4) comprises an unloading bracket (11) fixedly connected to the upper surface of the workbench (1) and located at the right side of the welding assembly (3); an unloading conveyor belt (12) for conveying workpieces after being fixedly connected is provided in the unloading bracket (11); a detection assembly (13) for detecting workpieces is provided on the unloading bracket (11); The loading assembly (2) comprises a loading bracket (5) fixedly connected to the upper surface of the workbench (1); a discharging assembly (6) for discharging raw materials is provided on the upper surface of the loading bracket (5); a stacking assembly (7) for stacking the output copper and aluminum bars is provided on the upper surface of the loading bracket (5) and located in the middle thereof; a moving assembly (8) for delivering the stacked copper and aluminum bars to the welding assembly (3) and for removing the fixedly connected workpieces is provided on the upper surface of the loading bracket (5) and the discharging bracket (11), respectively; a cleaning assembly (9) for cleaning the contact surfaces of the copper and aluminum bars is provided at one end of the moving assembly (8) on the loading bracket (5) and at the rear end of the discharging assembly (6).

2. The automatic copper-aluminum bar welding machine according to claim 1 is characterized in that: The discharging assembly (6) comprises a material storage assembly 1 (601) and a material storage assembly 2 (602) which are arranged on a feeding bracket (5) and located at the rear end and one side of the material moving assembly (8); the material storage assembly 1 (601) comprises a material storage box 1 (6014) fixedly connected to the upper surface of the feeding bracket (5); a clearance opening (6011) is provided in the middle position of the upper surface of the feeding bracket (5); a feeding conveyor belt (6012) is provided in the clearance opening (6011); a plurality of rubber push blocks (6013) with the same spacing are provided on the surface of the feeding conveyor belt (6012); a through notch 1 (6015) is provided at the bottom of the material storage box 1 (6014) for allowing the rubber push blocks (6013) to be cleared; the material storage assembly 2 (602) The invention comprises a second material storage box (6021) fixedly connected to the upper surface of a feeding bracket (5), a second notch (6022) penetrating therethrough is provided at the bottom of the second material storage box (6021), a sliding rail cross plate (705) is fixedly connected to the upper surface of the feeding bracket (5) and passing through the second notch (6022), a material pushing rack (6023) is slidably connected in the second notch (6022), a multi-section electric push rod (6024) is fixedly connected between one side of the second material storage box (6021) and one side of the material pushing rack (6023) for causing the material pushing rack (6023) to move laterally, and two symmetrical guide rods (6025) are provided on one side of the second material storage box (6021), and the two guide rods (6025) pass through the material pushing rack (6023) and are slidably connected thereto.

3. The automatic copper-aluminum bar welding machine according to claim 2 is characterized in that: The stacking assembly (7) comprises two U-shaped frames (701) fixedly connected to the upper surface of the loading bracket (5) symmetrically, an inverted linear motor module 1 (702) fixedly connected between the two U-shaped frames (701), a cylinder 2 (703) fixedly connected to one side of the mover of the linear motor module 1 (702), and a pneumatic gripper suction cup (704) fixedly connected to the other end of the cylinder 2 (703).

4. The automatic copper-aluminum bar welding machine according to claim 3 is characterized in that: The material moving assembly (8) comprises a fixed bracket (801) fixedly connected to the upper surface of the loading bracket (5) and the upper surface of the unloading bracket (11); one side of the fixed bracket (801) is fixedly connected to an inverted linear motor module 2 (802); one side of the mover of the linear motor module 2 (802) is fixedly connected to a parallel clamping cylinder (803); two clamping jaws of the parallel clamping cylinder (803) are provided with a clamping assembly (804); the clamping assembly (804) comprises two clamping plates 1 (804) fixedly connected to the two clamping jaws. 1), one side of the clamping plate one (8041) is provided with two circular grooves one (8042), the two circular grooves one (8042) are fixedly connected with limit rods (8043), the two limit rods (8043) are slidably connected with the clamping plate two (8044), one side of the clamping plate two (8044) and located at the sliding position of the limit rod (8043) are provided with circular grooves two (8045), and a tension spring (8046) is fixedly connected between the inner walls of one side of the corresponding circular grooves one (8042) and the circular grooves two (8045).

5. The automatic copper-aluminum bar welding machine according to claim 2 is characterized in that: The cleaning component (9) comprises a connecting bracket (901) fixedly connected to the bottom of one end of a fixing bracket (801), the bottom of the connecting bracket (901) being fixedly connected to a fixing plate (902), a dust-absorbing cotton (903) for wiping the upper surface of the output raw material in the material storage component (601) being bonded to the lower surface of the fixing plate (902), a avoiding groove (904) is provided on the upper surface of the slide rail cross plate (705) and located on one side of the material storage box (6021), and a dust-absorbing cotton (905) for wiping the lower surface of the raw material in the material storage box (6021) is provided in the avoiding groove (904).

6. The automatic copper-aluminum bar welding machine according to claim 1 is characterized in that: The welding assembly (3) comprises a welding bracket (301) fixedly connected to the upper surface of a workbench (1); the upper surface of the welding bracket (301) is fixedly connected to a fixing table (305); the upper surface of the fixing table (305) is fixedly connected to a plurality of mutually symmetrical support rods (306); the top ends of the plurality of support rods (306) are fixedly connected to a support table (307); the upper surface of the support table (307) is provided with an electrode 1 (308); the top of the welding bracket (301) is fixedly connected to a welding host (302); one side of the welding host (302) is fixedly connected to an arm (303); one end of the upper surface of the arm (303) is fixedly connected to a welding machine (302); A cylinder 1 (304) is connected, the output end of the cylinder 1 (304) passes through the lower surface of the machine arm (303) and is fixedly connected to an end plate (309), the lower surface of the end plate (309) is provided with an electrode 2 (310), one side of the electrode 2 (310) is fixedly connected to a connecting copper plate 2 (312), one side of the electrode 1 (308) is fixedly connected to a connecting copper plate 1 (311), the other ends of the connecting copper plate 1 (311) and the connecting copper plate 2 (312) are respectively connected to the positive and negative electrodes in the welding main machine (302), and a straightening component (10) for straightening the stacked copper and aluminum bars is provided on the welding bracket (301) and located on both sides of the fixed platform (305).

7. The automatic copper-aluminum bar welding machine according to claim 6 is characterized in that: The straightening assembly (10) comprises two U-shaped rods (1001) fixedly connected to the upper surface of the welding bracket (301) and located on both sides of the fixed platform (305); two symmetrical round rods (1002) are fixedly connected between the opposite sides of the two U-shaped rods (1001); two symmetrical slides (1003) are slidably connected to the two round rods (1002); two mirror-image straightening frames (1005) are fixedly connected to the opposite sides of the two slides (1003); two symmetrical groups of mounting holes (1004) are provided on the two slides (1003), and each group has a plurality of holes; a slide plate (1007) is slidably connected to the plurality of support rods (306); a cylinder three (1006) is provided between the upper surface of the slide plate (1007) and the lower surface of the support platform (307); and connecting rods (1008) are rotatably connected between the two sides of the slide plate (1007) and the opposite sides of the two slides (1003).

8. The automatic copper-aluminum bar welding machine according to claim 1 is characterized in that: The detection assembly (13) comprises an electric telescopic rod (1301) fixedly connected to the inner walls of both sides of the unloading bracket (11), one end of each of the two electric telescopic rods (1301) being fixedly connected to a connecting bracket (1302), one end of each of the two connecting brackets (1302) being fixedly connected to a lower clamping plate (1303), the upper surface of the lower clamping plate (1303) being fixedly connected to two symmetrical sliding rods (1304), the two sliding rods (1304) being slidably connected to an upper clamping plate (1305), and the upper clamping plate (1305) being fixedly connected to the upper surface of the lower clamping plate (1303). A square plate (1306) is fixedly connected to one side of the upper clamping plate (1305) and the lower clamping plate (1303); a pressure sensor (1307) is provided on the upper surface of the square plate (1306) on the side of the lower clamping plate (1303); a pneumatic push rod (1308) is provided on the upper surface of the pressure sensor (1307); and a top end of the pneumatic push rod (1308) is fixed to the lower surface of the square plate (1306) on the side of the upper clamping plate (1305); and a groove (1309) is provided on the upper surface of the lower clamping plate (1303); A distance sensor (1310) is provided in the groove (1309), and the distance sensor (1310) is electrically connected to the pressure sensor (1307). A waste processing component (14) for discharging defective products is provided between the inner walls of both sides of the unloading conveyor belt (12) and at the rear end of the detection component (13). The waste processing component (14) includes an L-shaped plate (1401) fixedly connected to the rear end of the upper surface of the unloading conveyor belt (12), and one side of the L-shaped plate (1401) is fixedly connected to an electric telescopic rod (1 402), one end of the second electric telescopic rod (1402) passes through one side of the L-shaped plate (1401) and is fixedly connected to a material push plate (1403), one side of the upper surface of the unloading conveyor belt (12) is fixedly connected to an inclined plate (1404) used in conjunction with the material push plate (1403), the upper surface of the workbench (1) and located on one side of the unloading conveyor belt (12) is provided with a waste conveyor belt (1405) used in conjunction with the inclined plate (1404), and the pressure sensor (1307) is electrically connected to the second electric telescopic rod (1402).

9. The automatic copper-aluminum bar welding machine according to claim 8, characterized in that: A cooling component (15) for cooling the copper and aluminum bars after welding is provided at one end of the material moving component (8) located on the material unloading support (11), and the cooling component (15) comprises two L-shaped connecting plates (1501) fixedly connected to one side of a fixed support (801) located on the material unloading support (11), an atomizing nozzle (1502) is provided at one end of the L-shaped connecting plate (1501), and a cold water connector (1503) connected to an external cold water pipe is provided on the upper surface of the atomizing nozzle (1502), an upper support (1504) is fixedly connected below the cross bar of the L-shaped connecting plate (1501), a lower support (1505) is fixedly connected at the front end position of the upper surface of the material unloading conveyor belt (12), and absorbent cotton (1506) for absorbing moisture on the surface of the workpiece is bonded to the upper surface of the lower support (1505) and the lower surface of the upper support (1504).

10. An automated copper-aluminum bar welding method, applicable to an automated copper-aluminum bar welding machine as claimed in any one of claims 1 to 9, characterized in that: The following steps are involved: S1: First, the copper bar and the aluminum bar are placed in the storage component 1 (601) and the storage component 2 (602) respectively, and then the feeding conveyor belt (6012) is started to rotate. During the rotation, the rubber push block (6013) passes through the slot 1 (6015) under the storage box 1 (6014) to push out the copper bar at the bottom for transportation. At the same time, the multi-section electric push rod (6024) is started to shrink. During the shrinkage process, the push rack (6023) is driven to slide along the slot 2 (6022) under the storage box 2 (6021), and the aluminum bar at the bottom is pushed out while sliding. During the process of pushing out the copper bar, the upper surface of the copper bar contacts the dust-absorbing cotton 1 (903) to wipe the dust on the upper surface. During the process of pushing out the aluminum bar, the lower surface of the aluminum bar contacts the dust-absorbing cotton 2 (905) to wipe the dust on the lower surface. S2: After the aluminum row is pushed out, the second cylinder (703) is started to extend so that the pneumatic gripper suction cup (704) contacts the aluminum row, and then the pneumatic gripper suction cup (704) is started to adsorb the aluminum row. After the adsorption is completed, the second cylinder (703) is retracted to move the pneumatic gripper suction cup (704) upward, and then the pneumatic linear motor module (702) drives the pneumatic gripper suction cup (704) to move horizontally until it moves to the top of the pushed out copper row. The second cylinder (703) is started to extend so that the aluminum row is stacked on the top of the copper row, and then the pneumatic gripper suction cup (704) is closed to separate the aluminum row from it, and then the pneumatic gripper suction cup (704) returns to the initial position, and so on. S3: After the copper and aluminum bars are stacked, the stacked copper and aluminum bars are sent to the space between the two clamping plates (8044) at the rear end by the feeding conveyor belt (6012), and then the parallel clamping claw cylinder (803) is started to retract the two clamping claws, which will drive the clamping plate (8041) and the clamping plate (8044) to move towards each other. When the two clamping plates (8044) come into contact with the stacked copper and aluminum bars, the clamping claws continue to retract. At this time, the tension spring (8046) is stretched under force. When the clamping claws can no longer retract, the copper and aluminum bars are clamped. Then, the linear motor module (802) is started to send the copper and aluminum bars to the welding assembly (3) for welding. After the placement is completed, the linear motor module (802) and the parallel clamping claw cylinder (803) return to the initial position to prepare for the next stacked copper and aluminum bars to be transported. S4: When the copper bar and the aluminum bar need to be welded, the cylinder 1 (304) is started to extend, and while the cylinder 1 (304) is extended, the end plate (309) at one end and the electrode 2 (310) are driven to move downward until the electrode 2 (310) and the upper surface of the aluminum bar are pressed tightly between the electrode 1 (308) and the electrode 2 (310), and then an electric current is passed through the contact surface of the copper bar and the aluminum bar and the resistance heat generated by the electric current flowing through the adjacent area to process them into a molten or plastic state, and form a bond under pressure, thereby completing the butt welding of the copper and aluminum bars; S5: Before welding the copper bar and the aluminum bar, start the cylinder three (1006) to extend, and during the extension process, drive the slide plate (1007) to slide downward along the support rod (306). During the downward sliding of the support rod (306), the connecting rods (1008) rotating on both sides thereof simultaneously drive the two slides (1003) to move toward each other along the round rod (1002). While the slides (1003) move, the straightening frames (1005) on the opposite sides thereof approach each other, and further straighten the stacked copper bar and aluminum bar. After the welding is completed, start the cylinder three (1006) to retract, and return the slide (1003) to the initial position, so as to limit the stacked copper bar and aluminum bar during welding, and prevent the electrode two (310) from running off the stacked copper bar and aluminum bar during the process of air discharge and close fitting between the stacked copper bar and aluminum bar; S6: After welding is completed, the copper-aluminum bar that has been welded is removed from the welding assembly (3) by means of the material transfer assembly (8) on the material removal bracket (11). During the removal process, when the copper-aluminum bar passes through the atomizing nozzle (1502), the atomizing nozzle (1502) sprays cold water so that the mist of cold water adheres to the surface of the copper-aluminum bar. After the temperature is reduced, the copper-aluminum bar continues to be driven to move toward the material removal conveyor belt (12). During the process, the upper and lower surfaces of the copper-aluminum bar are in contact with the absorbent cotton (1506), and the copper-aluminum bar continues to move so that it is placed on the material removal conveyor belt (12); S7: After the copper-aluminum bar is cooled, it is placed on the unloading conveyor belt (12) and then conveyed to the detection assembly (13), and then two electric telescopic rods (1301) are simultaneously started to extend, so that the two sets of upper clamping plates (1305) and lower clamping plates (1303) simultaneously clamp the upper and lower halves of the copper-aluminum bar after welding. After the clamping is completed, the pneumatic push rod (1308) is started to extend, and the pressure sensor (1307) and the distance sensor (1310) are operated at the same time. When the pressure sensor (1307) withstands the pressure reaching the standard and the value of the distance sensor (1310) is still the initial value, the welding is qualified. If the value of the pressure sensor (1307) floats within the qualified range and the value of the distance sensor (1310) rises, the welding is unqualified. S8: After the inspection is completed, the pneumatic push rod (1308) and the electric telescopic rod 1 (1301) return to the initial position to wait for the inspection of the next workpiece. After the inspection reaches the unqualified product, the distance sensor (1310) transmits the signal to the electric telescopic rod 2 (1402). When the unqualified product passes through the material push plate (1403), the electric telescopic rod 2 (1402) starts to extend, thereby driving the material push plate (1403) to move and push the unqualified product onto the inclined plate (1404), and the unqualified product slides through the inclined plate (1404) to the waste conveyor belt (1405) for transportation.

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