A double-station dissimilar metal double-sided laser welding equipment

Abstract

The invention discloses a double-station heterogeneous metal double-sided laser welding device, comprising a workbench, a material belt conveying component, a welding jig and a laser welding component, wherein the welding jig comprises a bottom plate, a Cowling lower die, a Spring lower die, a Cowling upper die, a Spring upper die, a Cowling cutting component and a Spring cutting component, and the welding jig is provided with a Spring material belt groove, a Shield material belt groove and a Cowling material belt channel arranged in sequence from top to bottom, wherein the Shield material belt groove is arranged horizontally, and the Cowling material belt channel and the Spring material belt groove are arranged vertically, and a first cutting knife hole for the Cowling cutting component to pass through is provided through the bottom plate and the Cowling lower die, and the first cutting knife hole passes through the Cowling material belt channel, and a second cutting knife hole for the Spring cutting component to pass through is provided below the Shield material belt groove and passes through the bottom plate and the Spring lower die. The laser welding device of the invention can be divided into two stations to weld the Spring parts and Cowling parts of heterogeneous materials on both sides of the Shield part respectively, and has high welding quality and high production efficiency.

Description

Technical Field

[0001] The invention relates to the technical field of welding, and in particular to a double-station dissimilar metal double-sided laser welding device. Background Art

[0002] Radio frequency shielding components are important parts for mobile terminals such as mobile phones. Figure 1 The front partial schematic diagram of the radio frequency shielding assembly obtained by the welding equipment is schematically shown. Figure 2 The schematic diagram shows a partial back view of the RF shielding assembly obtained by welding equipment. Please refer to Figure 1 and Figure 2 The radio frequency shielding assembly is composed of parts of different materials, which are named Shield 700, Cowling 800 and Spring 900. Shield 700 is a thin stamping part, Cowling 800 is a roughly cubic cover, and Spring 900 is a deformable spring. Cowling 800 is welded to one side of Shield 700 and Spring 900 is welded to the other side. Initially, Shield 700, Cowling 800 and Spring 900 are fixed on Shield material strip, Cowling material strip and Spring material strip, respectively. Summary of the invention

[0003] According to one aspect of the present invention, a double-station dissimilar metal double-sided laser welding device is provided, comprising:

[0004] Workbench;

[0005] The material belt conveyor assembly includes a material pulling mechanism, a guide assembly, and a material unwinding assembly. There are three material belt conveyor assemblies, one of which is arranged horizontally on the workbench, and the other two are arranged vertically;

[0006] The welding jig is arranged between the pulling mechanism and the guiding assembly. The welding jig comprises a base plate, a Cowling lower die, a Spring lower die, a Cowling upper die, a Spring upper die, a Cowling cutting assembly and a Spring cutting assembly. The Cowling lower die and the Spring lower die are both fixed on the upper surface of the base plate. The Cowling upper die is located above the Cowling lower die, the Spring upper die is located above the Spring lower die, the Cowling cutting assembly is located below the Cowling lower die, the Spring cutting assembly is located below the Spring lower die, the Cowling lower die is provided with a Cowling material strip channel for the Cowling material strip to pass through, and the Cowling The lower die and the Spring lower die are provided with Shield material belt grooves for guiding the Shield material belt, and the Spring upper die is provided with a Spring material belt groove for guiding the Spring material belt, wherein the Shield material belt groove is arranged horizontally, and the Cowling material belt channel and the Spring material belt groove are arranged vertically, the Cowling material belt channel is located below the Shield material belt groove, and the Spring material belt groove is located above the Shield material belt groove, and a first cutting knife hole is provided through the bottom plate and the Cowling lower die for the Cowling cutting assembly to pass through, the first cutting knife hole passes through the Cowling material belt channel, and a second cutting knife hole is provided below the Shield material belt groove and through the bottom plate and the Spring lower die for the Spring cutting assembly to pass through;

[0007] Laser welding assembly, each welding station is equipped with a corresponding laser welding assembly.

[0008] The beneficial effects of this embodiment are: the Cowling part and the Spring part are welded to the two sides of the Shield part; the Spring material strip groove, the Shield material strip groove and the Cowling material strip channel are respectively provided for the Spring material strip, the Shield material strip and the Cowling material strip to pass through, and the three channels or guide grooves for guiding the material strips are the Spring material strip groove, the Shield material strip groove and the Cowling material strip channel from top to bottom. The advantage of arranging them in this order is that the defect of narrow welding space is overcome, and the welding parts of the Cowling part and the Spring part are fully exposed to the laser, thereby improving the utilization rate of the laser; the Cowling cutting component cuts the Cowling part from the Cowling material strip, and pushes up to make the Cowling part contact with the Shield material strip, and then the laser welding component welds them; the laser welding component welds the Spring part and the Shield part, and the Spring cutting component cuts the Spring part from the Spring material strip.

[0009] In some embodiments, the material pulling mechanism includes a first frame in the shape of a square frame, a horizontal driving shaft is provided in the first frame, a driving wheel is coaxially fixed on the driving shaft, a first motor is installed on the outer side of the first frame, the output shaft of the first motor is coaxially connected to the driving shaft, a shaft parallel to the driving shaft is fixed in the first frame, two levers are rotatably connected to the shaft, two ends of each lever are respectively located on both sides of the shaft, the same ends of the two levers are connected by a first connecting rod, and the other ends of the two levers are connected by a second connecting rod, a driven wheel capable of rotation is coaxially sleeved on the second connecting rod, a spring is provided above the end of the lever away from the first connecting rod, the spring is configured to apply downward pressure to the lever so that the driven wheel fits with the driving wheel, a first cylinder is provided above the first connecting rod, a pressure rod is connected to the output shaft of the first cylinder, and the pressure rod is configured to be able to press the first connecting rod downward under the drive of the first cylinder to separate the driven wheel from the driving wheel, a horizontal extension plate is provided on the side of the first frame opposite to the guide assembly, two first material guide plates perpendicular to the driving shaft and horizontally arranged are provided on the extension plate, and first material guide grooves are provided on the opposite sides of the two first material guide plates. Under the action of the spring thrust, the driven wheel approaches the driving wheel. In operation, the material belt is introduced into the material pulling mechanism from the first material guide groove and passes between the driven wheel and the driving wheel. The first motor drives the driving wheel to rotate, and the driving wheel and the driven wheel cooperate to pull the material belt forward. When the parts need to be welded, the first cylinder drives the pressure rod to move downward, and the pressure rod presses down the first connecting rod, driving the two levers to rotate, so that the other end of the lever overcomes the spring and tilts upward. At this time, the driven wheel is away from the driving wheel, and the material pulling mechanism stops pulling the material. Therefore, the material pulling mechanism of this embodiment has the function of dynamic stop.

[0010] In some embodiments, the guiding assembly includes two second material guide plates, a rotatable sleeve and two first chucks, the second material guide grooves are provided on the opposite sides of the two second material guide plates, the sleeves are provided at the inlet ends of the second material guide plates, the two first chucks are sleeved on the sleeves, a first bracket is installed on the workbench, the second material guide plate is fixed on the first bracket, an extension rod is fixed from the side of the first bracket, a fixed shaft is provided on the extension rod, two ball bearings are provided on the fixed shaft, a sleeve is provided outside the ball bearings, and the sleeves can be rotated by the ball bearings. The material passes through the two first chucks, the first chuck can prevent the material strip from having a large left-right deviation, and then the material strip passes between the second material guide grooves, specifically, the two edges of the material strip are respectively in the two second material guide grooves. The guiding assembly of this embodiment can prevent the material strip entering the welding process from being deviated or tilted left-right, and provides a guarantee for the welding accuracy of the subsequent welding process.

[0011] In some embodiments, the Cowling lower mold includes a Cowling lower mold base plate and a Cowling lower mold cover plate fixed on the Cowling lower mold base plate, and the Cowling material strip channel is located on the bottom surface of the Cowling lower mold cover plate.

[0012] In some embodiments, the Cowling cutting assembly includes a second cylinder, a first fixed plate, a first cutter and a first positioning pin, the second cylinder is arranged below the first fixed plate, the second cylinder drives the first fixed plate to rise and fall, the first cutter and the first positioning pin are fixed on the first fixed plate, the upper edge of the first cutter is provided with a blade, the upper end surface of the first cutter is provided with a square groove, and the first positioning pin is parallel to the first cutter and close to each other. The second cylinder drives the first cutter to move upward, the first positioning pin is inserted into a preset through hole on the Cowling material strip to prevent the Cowling material strip from shifting during cutting, and then the blade cuts the Cowling piece from the Cowling material strip, the Cowling piece just falls into the square groove, the first cutter continues to move upward until the Cowling piece contacts the lower surface of the Shield piece, the first cutter is kept stationary, and the Cowling piece is welded to the Shield piece by a laser welding assembly.

[0013] In some embodiments, the laser welding assembly includes a laser galvanometer and a lifting assembly, the laser galvanometer is connected to the lifting assembly so that the lifting assembly can drive the laser galvanometer to lift and lower, the lifting assembly includes a lifting frame, a lifting seat, a precision screw, a screw nut and a guide column, the laser galvanometer is fixed to the front of the lifting frame, the lifting frame is fixedly connected to the lifting seat, the lifting seat and the guide column are slidably matched, the screw nut is threadedly connected to the precision screw, the lifting seat is fixedly connected to the screw nut, and the precision screw can rotate around its central axis. This embodiment uses a precision screw to enable precise adjustment of the distance between the laser galvanometer lens and the welding point.

[0014] In some embodiments, the precision screw, screw nut and guide column are arranged in the bottom shell, the side of the bottom shell is provided with scale lines, and the lifting seat is provided with a pointer for indicating the height of the laser galvanometer. The scale line indicated by the pointer is the height of the laser galvanometer, and the lifting height of the laser galvanometer can also be accurately calculated by the indicated scale change.

[0015] In some embodiments, a locking block is provided at the upper end of the precision screw, and the locking block is fastened to the inner wall of the bottom shell. A first through hole is provided on the locking block, and the upper end of the precision screw passes through the first through hole. A notch is provided on the locking block to connect the first through hole and the side surface of the locking block, and the two sides of the notch form a first part and a second part respectively. A second crank is provided on the outside of the bottom shell, and a bolt is provided at the end of the second crank, and the bolt passes through the bottom shell and the second part, and cooperates with the second part thread, and the bolt is also connected with the first part thread. When not locked, a gap is left between the first through hole and the upper end of the precision screw to ensure that the precision screw can rotate. Rotating the second crank clockwise or counterclockwise can rotate the bolt. When the bolt is screwed in to a certain extent, it will cause the first part to deform toward the second part, thereby shrinking the inner diameter of the first through hole. When the inner diameter of the first through hole shrinks to a certain extent, the locking block locks the precision screw so that it can no longer rotate.

[0016] In some embodiments, a mounting seat is provided on the inner wall of the bottom shell, an arc-shaped groove with an arc-shaped cross section is provided on the mounting seat, the outer surface of the cylindrical guide post matches the arc-shaped groove, and the guide post is fixedly connected to the mounting seat by bolts. The mounting structure of the guide post and the mounting seat provided in this embodiment can prevent the vibration of the guide post, enhance the stability of the laser galvanometer, and ensure the welding accuracy. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 A partial schematic diagram of the front side of a product obtained by a double-station dissimilar metal double-sided laser welding device provided in a specific embodiment of the present invention.

[0018] Figure 2 A partial schematic diagram of the back side of a product obtained by a double-station dissimilar metal double-sided laser welding device provided in a specific embodiment of the present invention.

[0019] Figure 3 A rear view of a double-station dissimilar metal double-sided laser welding device provided in one specific embodiment of the present invention.

[0020] Figure 4 A top view of a dual-station dissimilar metal double-sided laser welding device provided in one specific embodiment of the present invention.

[0021] Figure 5 A front view of a welding jig provided in accordance with a specific embodiment of the present invention.

[0022] Figure 6 A schematic structural diagram of a bottom plate, a Cowling lower mold and a Spring lower mold provided in a specific embodiment of the present invention.

[0023] Figure 7 The figure is a schematic structural diagram of a material pulling mechanism provided in a specific embodiment of the present invention.

[0024] Figure 8 This is a schematic structural diagram from another angle of a material pulling mechanism provided by a specific embodiment of the present invention.

[0025] Fig. 9 A schematic structural diagram of a guide assembly provided in a specific embodiment of the present invention.

[0026] Fig.10 An exploded view of a guide assembly provided in accordance with a specific embodiment of the present invention.

[0027] Fig.11 The present invention is a schematic structural diagram of a discharge assembly provided in a specific embodiment of the present invention.

[0028] Fig.12A partial exploded view of a Cowling lower mold provided in a specific embodiment of the present invention.

[0029] Fig.13 A bottom view of a Cowling lower mold cover plate provided in accordance with a specific embodiment of the present invention.

[0030] Fig.14 A schematic structural diagram of a Spring lower mold provided for a specific implementation of the present invention.

[0031] Fig.15 A schematic structural diagram of a laser welding assembly provided in a specific embodiment of the present invention.

[0032] Fig.16 An exploded view of a laser welding assembly provided in accordance with a specific embodiment of the present invention.

[0033] Fig.17 for Fig.15 Magnified view of position A.

[0034] Fig.18 A partially enlarged view of the upper portion of a laser welding assembly provided in accordance with a specific embodiment of the present invention.

[0035] Fig.19 A cross-sectional view of a lifting assembly provided in accordance with a specific embodiment of the present invention.

[0036] Fig. 20 A schematic structural diagram of a Cowling cutting assembly provided in a specific embodiment of the present invention.

[0037] Fig.21 A schematic structural diagram of a first cutter and a first positioning pin provided in a specific embodiment of the present invention.

[0038] Fig. 22 A schematic structural diagram of a Spring cutting component provided for a specific embodiment of the present invention. DETAILED DESCRIPTION

[0039] The present invention will be further described in detail below in conjunction with the accompanying drawings.

[0040] Figure 3 The figure schematically shows a rear view of a double-station dissimilar metal double-sided laser welding device provided by a specific embodiment of the present invention. Figure 4 The figure schematically shows a top view of a double-station dissimilar metal double-sided laser welding device provided by a specific embodiment of the present invention.

[0041] Please refer to Figure 3-4The present invention provides a double-station dissimilar metal double-sided laser welding device, including a workbench 100, a material belt conveying assembly 200, a welding fixture 300 and a laser welding assembly 400.

[0042] The material belt conveyor assembly 200 includes a material pulling mechanism 210, a guide assembly 220, and a material unwinding assembly 230. There are three material belt conveyor assemblies 200, one of which is horizontally arranged on the workbench 100, and the other two are longitudinally arranged.

[0043] Combination Figure 5-6 , welding jig 300, welding jig 300 is arranged between the pulling mechanism 210 and the guiding assembly 220, welding jig 300 includes a bottom plate 310, a Cowling lower die 320, a Spring lower die 330, a Cowling upper die 340, a Spring upper die 350, a Cowling cutting assembly 360 and a Spring cutting assembly 370, Cowling lower die 320 and Spring lower die 330 are both fixed on the upper surface of the bottom plate 310, Cowling upper die 340 is located above Cowling lower die 320, Spring upper die 350 is located above Spring lower die 330, Cowling cutting assembly 360 is located below Cowling lower die 320, Spring cutting assembly 370 is located below Spring lower die 330, Cowling lower die 320 is provided with a Cowling material strip channel 321 for Cowling material strip to pass through, A Shield material strip groove 380 for guiding the Shield material strip is provided on the Cowling lower die 320 and the Spring lower die 330, and a Spring material strip groove 351 for guiding the Spring material strip is provided on the Spring lower die 330, wherein the Shield material strip groove 380 is arranged horizontally, and the Cowling material strip channel 321 and the Spring material strip groove 351 are arranged vertically, the Cowling material strip channel 321 is located below the Shield material strip groove 380, and the Spring material strip groove 351 is located above the Shield material strip groove 380, and a first cutting hole 322 for the Cowling material cutting component 360 to pass through is provided through the bottom plate 310 and the Cowling lower die 320, and the first cutting hole 322 passes through the Cowling material strip channel 321, and a second cutting hole 333 for the Spring material cutting component 370 to pass through is provided below the Shield material strip groove 380;

[0044] A laser welding assembly 400 is provided at each welding station.

[0045] The material belt conveying assembly 200 is used to convey the shield material belt, the cowling material belt and the spring material belt, so that the above three material belts can pass through the welding fixture 300. In operation, the material belt is set on the material unwinding assembly 230, the material pulling mechanism 210 pulls the material belt, and the guiding assembly 220 guides the direction of the material belt.

[0046] The Cowling material strip moves below the Shield material strip, and the Spring material strip moves above the Shield material strip. In operation, the control system of the welding equipment controls the movement of the material strips, the Cowling upper mold 340 is molded with the Cowling lower mold 320, the Spring upper mold 350 is molded with the Spring lower mold 330, the Cowling upper mold 340 presses the Shield material strip to position it, and the Spring upper mold 350 presses the Spring material strip and the Shield material strip to position them. The Cowling cutting assembly 360 pushes up to cut the Cowling piece from the Cowling material strip, and pushes the Cowling piece from the first cutter hole 322 to make the Cowling piece contact with the lower surface of the Shield piece, and then welded by the laser welding assembly 400. After the mold is closed, the Spring material strip contacts with the Shield material strip, and another laser welding assembly 400 welds the Spring piece and the Shield piece, and the Spring cutting assembly 370 pushes up to make the Spring piece fall off the Spring material strip. After completing these actions, the pulling mechanism 210 pulls the material strip forward one unit. The three channels or guide grooves for guiding the material strips are, from top to bottom, the Spring material strip groove 351, the Shield material strip groove 380 and the Cowling material strip channel 321. The advantage of arranging them in this order is that it overcomes the defect of narrow welding space, fully exposes the welding parts of the Cowling part and the Spring part to the laser, and improves the utilization rate of the laser and the welding quality.

[0047] refer to Figure 7-8The material pulling mechanism 210 includes a first frame 211 in the shape of a square frame. A horizontal driving shaft 212 is provided in the first frame 211. A driving wheel 213 is coaxially fixed on the driving shaft 212. A first motor 214 is installed on the outside of the first frame 211. The output shaft of the first motor 214 is coaxially connected to the driving shaft 212. A shaft 215 parallel to the driving shaft 212 is fixed in the first frame 211. Two levers 216 are rotatably connected to the shaft 215. The two ends of each lever 216 are respectively located on both sides of the shaft 215. The same ends of the two levers 216 are connected by a first connecting rod 217. The other ends of the two levers 216 are connected by a second connecting rod 218. A rotatable driven wheel 219 is coaxially sleeved on the second connecting rod 218. A spring 2110 is provided above the end of the lever 216 away from the first connecting rod 217. The spring 2110 is configured to apply downward pressure to the lever 216 so that the driven wheel 219 and the driving wheel 213 is fitted, a first cylinder 2111 is arranged above the first connecting rod 217, and a pressure rod 2112 is connected to the output shaft of the first cylinder 2111, and the pressure rod 2112 is configured to be able to press down the first connecting rod 217 under the drive of the first cylinder 2111 to separate the driven wheel 219 from the driving wheel 213; a horizontal extension plate 2113 is arranged on the side of the first frame 211 opposite to the guide assembly 220, and two first guide plates 2114 are arranged vertically and horizontally to the driving shaft 212 on the extension plate 2113, and first guide grooves 2115 are arranged on the opposite sides of the two first guide plates 2114. Under the thrust of the spring 2110, the driven wheel 219 approaches the driving wheel 213. In operation, the material strip is introduced into the material pulling mechanism 210 from the first material guide groove 2115, and passes between the driven wheel 219 and the driving wheel 213. The first motor 214 drives the driving wheel 213 to rotate, and the driving wheel 213 and the driven wheel 219 cooperate to pull the material strip forward. When it is necessary to weld the parts, the first cylinder 2111 drives the pressure rod 2112 to move downward, and the pressure rod 2112 presses down the first connecting rod 217, driving the two levers 216 to rotate, so that the other end of the lever 216 overcomes the spring 2110 and tilts upward. At this time, the driven wheel 219 is away from the driving wheel 213, and the material pulling mechanism 210 stops pulling the material. Therefore, the material pulling mechanism 210 of this embodiment has the function of dynamic stop.

[0048] refer to Figure 9-10The guide assembly 220 includes two second guide plates 222, a rotatable sleeve 224 and two first chucks 223. The second guide grooves 228 are arranged on the opposite sides of the two second guide plates 222. The sleeve 224 is arranged at the inlet end of the second guide plate 222. The two first chucks 223 are sleeved on the sleeve 224. A first bracket 221 is installed on the workbench 100, and the second guide plate 222 is fixed on the first bracket 221. An extension rod 227 is fixed from the side of the first bracket 221. The extension rod 227 is provided with a fixed shaft 226. The fixed shaft 226 is provided with two ball bearings 225. The ball bearings 225 are provided with sleeves 224 outside, and the sleeves 224 can be rotated by the ball bearings 225. The first chuck 223 is coaxially fixed on the sleeve 224. Preferably, the distance between the two first chucks 223 is slightly larger than the width of the material strip. The working principle of the guiding assembly 220 is: the material passes between the two first chucks 223, the first chuck 223 can prevent the material strip from having a large left-right deviation, and then the material strip passes between the second material guide grooves 228. Specifically, the two edges of the material strip are respectively in the two second material guide grooves 228. The guiding assembly 220 of this embodiment can prevent the material strip entering the welding process from having a left-right deviation or tilt, thereby ensuring the welding accuracy of the subsequent welding process.

[0049] refer to Fig.11 The material discharging assembly 230 includes a material placing shaft 231 and a second chuck 232. The material placing shaft 231 is rotatable. Specifically, the end of the material placing shaft 231 is fixed to the inverted third bracket 235 through a ball bearing. One end of the third bracket 235 is fixed to the workbench 100, and the other end extends to the outside of the workbench 100. There are two second chucks 232, which are coaxially sleeved on the material placing shaft 231 and fastened by butterfly bolts. Preferably, the second chuck 232 is detachably connected to the material placing shaft 231, so that the spacing between the two second chucks 232 can be adjusted to accommodate material trays of different widths. In operation, one second chuck 232 is removed, and the material tray is sleeved on the material placing shaft 231, and then the two second chucks 232 clamp the material tray, and the material strip enters the guiding assembly 220.

[0050] refer to Figure 12-13The Cowling lower die 320 includes a Cowling lower die bottom plate 324 and a Cowling lower die cover plate 325 fixed on the Cowling lower die bottom plate 324. The Cowling material strip channel 321 is located on the bottom surface of the Cowling lower die cover plate 325. The pulling mechanism 210 pulls the Cowling material strip forward, so that the Cowling piece passes through the Cowling material strip channel 321. When the equipment system controls the Cowling piece to move to align with the first cutting knife hole 322, the Cowling cutting assembly 360 moves upward, cuts the Cowling piece from the Cowling material strip and pushes it up, so that the Cowling piece contacts the Shield piece located above, and then is welded by the laser welding assembly 400.

[0051] refer to Fig.14 The Spring lower mold 330 includes a Spring lower mold bottom plate 331, on which a Spring guide block 332 is provided. The Spring guide block 332 extends in the longitudinal direction. The Spring guide block 332 is divided into two sections, and a gap is left between the two sections of the Spring guide block 332 so that the Shield material strip can pass through the gap. A Spring material strip groove 351 is provided on the side of the Spring material guide block 332. In operation, the Spring material strip is located between two opposite Spring material strip grooves 351, and two edges of the Spring material strip are respectively located in the two opposite Spring material strip grooves 351.

[0052] Combination Figure 6 and Figure 12-14 , the Shield material strip groove 380 spans the Cowling welding station and the Spring welding station, and the Shield material strip groove 380 is formed in the following manner: a Shield material guide block 381 is provided on the Cowling lower die 320 and the Spring lower die 330 respectively, and the Shield material guide block 381 is composed of two parallel blocks whose main parts are in the shape of long strips, and a third material guide groove 382 is provided on the opposite sides of the two blocks. A vertically arranged floating pin 383 is also provided on the Cowling lower die 320 and the Spring lower die 330, and an annular groove 384 is provided on the outer wall of the floating pin 383 in the circumferential direction, and the annular groove 384 is aligned with the third material guide groove 382, ​​that is, the annular groove 384 and the third material guide groove 382 constitute the Shield material strip groove 380 for guiding the Shield material strip. A spring is provided at the bottom of the floating pin 383, and when the floating pin 383 is pressed down, the floating pin 383 can sink, and when the pressure is removed, the floating pin 383 is reset. When the Spring upper mold 350 is pressed down, the floating pin 383 is pressed down to sink, so that the Spring material strip contacts the Shield material strip.

[0053] refer to Figure 20-21 The Cowling cutting assembly 360 includes a second cylinder 361, a first fixed plate 362, a first cutter 363 and a first positioning pin 364. The second cylinder 361 is arranged below the first fixed plate 362, and the second cylinder 361 drives the first fixed plate 362 to rise and fall. The first cutter 363 and the first positioning pin 364 are fixed on the first fixed plate 362. A blade 365 is provided on the upper edge of the first cutter 363, and a square groove 366 is provided on the upper end face of the first cutter 363. The first positioning pin 364 is parallel to the first cutter 363 and close to each other. The second cylinder 361 can drive the first cutter 363 and the first positioning pin 364 to move in the first cutter hole 322. When the device is working, the second cylinder 361 drives the first cutter 363 to move upward, and the first positioning pin 364 is inserted into the preset through hole on the Cowling material strip to prevent the Cowling material strip from deflecting during cutting. Then the blade 365 cuts the Cowling piece from the Cowling material strip, and the Cowling piece just falls into the square groove 366. The first cutter 363 continues to move upward until the Cowling piece contacts the lower surface of the Shield piece, and the first cutter 363 is kept stationary, and the Cowling piece and the Shield piece are welded together by the laser welding assembly 400. The square groove 366 ensures that the posture of the Cowling piece is correct, and the first cutter 363 pushes up to make the Cowling piece and the Shield piece in close contact, ensuring the bonding strength and stability of the welding part.

[0054] refer to Fig. 22 The Spring cutting assembly 370 includes a third cylinder 371, a second fixed plate 372 and a second cutter 373. The third cylinder 371 is arranged below the second fixed plate 372 and can drive the second fixed plate 372 to rise and fall. The second cutter 373 is fixed on the second fixed plate 372. The third cylinder 371 drives the second cutter 373 to move in the second cutter hole 333. The Spring material strip moves on the Shield material strip. After the Spring upper mold 350 and the Spring lower mold 330 are molded together, the Spring material strip and the Shield material strip are pressed tightly, and the Spring parts and the Shield parts are in contact. Then, the laser welding assembly 400 welds the Spring parts and the Shield parts, and the bonding force of the welding parts is strong and stable. The third cylinder 371 drives the second cutter 373 to move upward to cut the Spring parts from the Spring material strip.

[0055] The Cowling upper die 340 and the Spring upper die 350 are driven by three fourth air cylinders 390. Specifically, the output shaft of one fourth air cylinder 390 is connected to the left side of the Cowling upper die 340, the output shaft of one fourth air cylinder 390 is connected to the right side of the Spring upper die 350, and the output shaft of another fourth air cylinder 390 is connected to the right side of the Cowling upper die 340 and the left side of the Spring upper die 350. The driving structure of this embodiment ensures the synchronization of the lifting and lowering of the Cowling upper die 340 and the Spring upper die 350.

[0056] Positioning pins are respectively provided on the bottom surfaces of the Cowling upper mold 340 and the Spring upper mold 350. After the molds are closed, the positioning pins can be inserted into the preset through holes on the Shield material strip and the Spring material strip to prevent the Shield material strip and the Spring material strip from deviating.

[0057] refer to Figure 15-16 , the laser welding assembly 400 includes a laser galvanometer 410 and a lifting assembly 420, and the laser galvanometer 410 is connected to the lifting assembly 420 so that the lifting assembly 420 can drive the laser galvanometer 410 to rise and fall. The lifting assembly 420 includes a lifting frame 421, a lifting seat 423, a precision screw 425, a screw nut 426 and a guide column 427. The laser galvanometer 410 is fixed to the front of the lifting frame 421, the lifting frame 421 is fixedly connected to the lifting seat 423, the lifting seat 423 and the guide column 427 are slidably matched, the screw nut 426 is threadedly connected to the precision screw 425, the lifting seat 423 is fixedly connected to the screw nut 426, and the precision screw 425 can rotate around its central axis. In operation, rotating the precision screw 425 clockwise or counterclockwise can lift the laser galvanometer 410. This embodiment uses a precision screw to precisely adjust the distance between the laser galvanometer 410 lens and the welding point.

[0058] refer to Fig.15 and Fig.17 The precision screw 425, screw nut 426 and guide post 427 are arranged in the bottom shell 424. The side of the bottom shell 424 is provided with scale lines. The lifting seat 423 is provided with a pointer 4210 for indicating the height of the laser galvanometer 410. The scale line indicated by the pointer 4210 is the height of the laser galvanometer 410. In addition, the lifting height of the laser galvanometer 410 can be accurately calculated through the indicated scale changes.

[0059] refer to Fig.18 The lower end of the precision screw 425 is provided with a ball bearing, and the upper end is provided with a first crank 429. The precision screw 425 can be rotated effortlessly by shaking the first crank 429.

[0060] After the height of the laser galvanometer 410 is adjusted to the right position, the precision screw 425 needs to be locked to prevent the precision screw 425 from rotating during the welding process. The upper end of the precision screw 425 is provided with a locking block 4212, which is fastened to the inner wall of the bottom shell 424. The locking block 4212 is provided with a first through hole 4214, and the upper end of the precision screw 425 passes through the first through hole 4214. The locking block 4212 is provided with a notch 4215 that connects the first through hole 4214 with the side surface of the locking block 4212. The two sides of the notch 4215 form a first part 4216 and a second part 4217 respectively. The outside of the bottom shell 424 is provided with a second crank 4213, and the end of the second crank 4213 is provided with a bolt 4218, which passes through the bottom shell 424 and the second part 4217 and is threadedly matched with the second part 4217, and the bolt 4218 is also threadedly connected with the first part 4216. When not locked, there is a gap between the first through hole 4214 and the upper end of the precision screw 425 to ensure that the precision screw 425 can rotate. The second crank 4213 can be rotated clockwise or counterclockwise to rotate the bolt 4218. When the bolt 4218 is screwed in to a certain extent, the first portion 4216 will be deformed toward the second portion 4217, thereby shrinking the inner diameter of the first through hole 4214. When the inner diameter of the first through hole 4214 shrinks to a certain extent, the locking block 4212 locks the precision screw 425 so that it can no longer rotate.

[0061] refer to Fig.19 The inner wall of the bottom shell 424 is provided with a mounting seat 4211, and the mounting seat 4211 is provided with an arc-shaped groove 4219 with an arc-shaped cross section. The outer surface of the cylindrical guide column 427 matches the arc-shaped groove 4219, and the guide column 427 is fixedly connected to the mounting seat 4211 by bolts. The mounting structure of the guide column 427 and the mounting seat 4211 provided in this embodiment can prevent the vibration of the guide column 427, enhance the stability of the laser galvanometer 410, and ensure the welding accuracy. In order to further improve the stability of the laser galvanometer 410, in some embodiments, the number of the guide columns 427 is 4.

[0062] A guide sleeve 428 is provided on the back of the lifting seat 423, and the guide sleeve 428 is slidably matched with the guide post 427. Since a part of the outer wall of the guide post 427 is in contact with the arc-shaped groove 4219, in order to enable the guide sleeve 428 to be sleeved on the guide post 427, the difference between the guide sleeve 428 provided in this embodiment and the cylindrical guide sleeve sold on the market is that the guide sleeve 428 has a notch opened along its length direction.

[0063] The bottom shell 424 is covered with a front cover plate 422, which can cover the parts in the bottom shell 424. The front cover plate 422 is connected to the bottom shell 424 by bolts. In order not to affect the lifting and lowering of the lifting frame 421 and the lifting seat 423, a gap is provided at the position where the lifting frame 421 and the lifting seat 423 are connected, and the front cover plate 422 passes through the gap.

[0064] The above are only some embodiments of the present invention. For those skilled in the art, several modifications and improvements can be made without departing from the creative concept of the present invention, which all belong to the protection scope of the present invention.

Claims

1. A double-station dissimilar metal double-sided laser welding equipment, characterized in that: include: Workbench (100); A material belt conveyor assembly (200), the material belt conveyor assembly (200) comprising a material pulling mechanism (210), a guide assembly (220), and a material unwinding assembly (230), there are three material belt conveyor assemblies (200), one of which is disposed transversely on the workbench (100), and the other two material belt conveyor assemblies (200) are disposed longitudinally; The welding jig (300) is arranged between the material pulling mechanism (210) and the guide assembly (220). The welding jig (300) comprises a bottom plate (310), a Cowling lower die (320), a Spring lower die (330), a Cowling upper die (340), a Spring upper die (350), a Cowling cutting assembly (360) and a Spring cutting assembly (370). The Cowling lower die (320) and the Spring lower die (330) are both fixed on the upper surface of the bottom plate (310). The Cowling upper die (340) is located above the Cowling lower die (320), the Spring upper die (350) is located above the Spring lower die (330), the Cowling cutting assembly (360) is located below the Cowling lower die (320), the Spring cutting assembly (370) is located below the Spring lower die (330), the Cowling lower die (320) is provided with a Cowling material strip channel (321) for the Cowling material strip to pass through, the Cowling lower die (320) and the Spring lower die (330) are connected to each other. 0) is provided with a Shield material strip groove (380) for guiding the Shield material strip, and the Spring lower mold (330) is provided with a Spring material strip groove (351) for guiding the Spring material strip, wherein the Shield material strip groove (380) is arranged horizontally, the Cowling material strip channel (321) and the Spring material strip groove (351) are arranged vertically, the Cowling material strip channel (321) is located below the Shield material strip groove (380), and the Spring material strip groove (351) is located above the Shield material strip groove (380), penetrating the bottom The plate (310) and the Cowling lower die (320) are provided with a first cutter hole (322) for the Cowling cutting assembly (360) to pass through, and the first cutter hole (322) passes through the Cowling material strip channel (321). A second cutter hole (333) is provided below the Shield material strip groove (380) and passes through the bottom plate (310) and the Spring lower die (330) for the Spring cutting assembly (370) to pass through. The Shield piece is a stamping piece, the Cowling piece is a roughly cubic cover, and the Spring piece is a deformable spring piece. A laser welding assembly (400), each welding station correspondingly being provided with a laser welding assembly (400); The Cowling cutting assembly (360) comprises a second cylinder (361), a first fixed plate (362), a first cutter (363) and a first positioning pin (364); the second cylinder (361) is arranged below the first fixed plate (362); the second cylinder (361) drives the first fixed plate (362) to rise and fall; the first cutter (363) and the first positioning pin (364) are fixed on the first fixed plate (362); a blade (365) is provided on the upper edge of the first cutter (363); a square groove (366) is provided on the upper end surface of the first cutter (363); and the first positioning pin (364) and the first cutter (363) are arranged in parallel and close to each other; The material pulling mechanism (210) comprises a first frame (211) in the shape of a square frame, a horizontal driving shaft (212) is arranged in the first frame (211), a driving wheel (213) is coaxially fixed on the driving shaft (212), a first motor (214) is installed on the outer side of the first frame (211), an output shaft of the first motor (214) is coaxially connected to the driving shaft (212), a shaft (215) parallel to the driving shaft (212) is fixed in the first frame (211), two levers (216) are rotatably connected to the shaft (215), two ends of each lever (216) are respectively located on two sides of the shaft (215), the same ends of the two levers (216) are connected by a first connecting rod (217), the other ends of the two levers (216) are connected by a second connecting rod (218), a rotatable driven wheel (219) is coaxially sleeved on the second connecting rod (218), and the end of the lever (216) away from the first connecting rod (217) is connected to the driven wheel (219). A spring (2110) is provided above the end of the first connecting rod (217), and the spring (2110) is configured to apply downward pressure to the lever (216) so that the driven wheel (219) fits with the driving wheel (213). A first cylinder (2111) is provided above the first connecting rod (217), and a pressure rod (2112) is connected to the output shaft of the first cylinder (2111). The pressure rod (2112) is configured to be able to The first connecting rod (217) is pressed downward to separate the driven wheel (219) from the driving wheel (213); a horizontal extension plate (2113) is provided on the side of the first frame (211) opposite to the guide assembly (220); two first material guide plates (2114) perpendicular to the driving shaft (212) and arranged horizontally are provided on the extension plate (2113); and first material guide grooves (2115) are provided on the opposite sides of the two first material guide plates (2114).

2. The double-station dissimilar metal double-sided laser welding equipment according to claim 1 is characterized in that: The guide assembly (220) comprises two second material guide plates (222), a rotatable shaft sleeve (224) and two first chucks (223); second material guide grooves (228) are provided on opposite sides of the two second material guide plates (222); the shaft sleeve (224) is arranged at the inlet end of the second material guide plate (222); the two first chucks (223) are sleeved on the shaft sleeve (224); a first bracket (221) is installed on the workbench (100); the second material guide plate (222) is fixed on the first bracket (221); an extension rod (227) is fixed from the side of the first bracket (221); a fixed shaft (226) is provided on the extension rod (227); two ball bearings (225) are provided on the fixed shaft (226); a shaft sleeve (224) is provided outside the ball bearing (225); the shaft sleeve (224) can rotate through the ball bearing (225).

3. The double-station dissimilar metal double-sided laser welding equipment according to claim 1 is characterized in that: The Cowling lower mold (320) comprises a Cowling lower mold base plate (324) and a Cowling lower mold cover plate (325) fixed on the Cowling lower mold base plate (324), and the Cowling material strip channel (321) is located on the bottom surface of the Cowling lower mold cover plate (325).

4. The double-station dissimilar metal double-sided laser welding equipment according to claim 1 is characterized in that: The laser welding assembly (400) comprises a laser galvanometer (410) and a lifting assembly (420). The laser galvanometer (410) is connected to the lifting assembly (420) so that the lifting assembly (420) can drive the laser galvanometer (410) to rise and fall. The lifting assembly (420) comprises a lifting frame (421), a lifting seat (423), a precision screw (425), a screw nut (426) and a guide column (427). The laser galvanometer (410) is fixed on the front of the lifting frame (421). The lifting frame (421) is fixedly connected to the lifting seat (423). The lifting seat (423) and the guide column (427) are slidably matched. The screw nut (426) and the precision screw (425) are threadedly connected. The lifting seat (423) and the screw nut (426) are fixedly connected. The precision screw (425) can rotate around its central axis.

5. The double-station dissimilar metal double-sided laser welding equipment according to claim 4 is characterized in that: The precision screw (425), the screw nut (426) and the guide column (427) are arranged in the bottom shell (424); scale lines are arranged on the side of the bottom shell (424); and a pointer (4210) for indicating the height of the laser galvanometer (410) is arranged on the lifting seat (423).

6. The double-station dissimilar metal double-sided laser welding equipment according to claim 5 is characterized in that: A locking block (4212) is provided at the upper end of the precision screw rod (425). The locking block (4212) is fastened to the inner wall of the bottom shell (424). A first through hole (4214) is provided on the locking block (4212). The upper end of the precision screw rod (425) passes through the first through hole (4214). A notch (4215) is provided on the locking block (4212) that communicates with the first through hole (4214) and the side surface of the locking block (4212). A first portion (4216) and a second portion (4217) are formed on both sides of the bottom shell (4215), respectively. A second crank handle (4213) is provided on the outside of the bottom shell (424). A bolt (4218) is provided at the end of the second crank handle (4213). The bolt (4218) passes through the bottom shell (424) and the second portion (4217) and is threadedly matched with the second portion (4217). The bolt (4218) is also threadedly connected to the first portion (4216).

7. The double-station dissimilar metal double-sided laser welding equipment according to claim 6 is characterized in that: The inner wall of the bottom shell (424) is provided with a mounting seat (4211), and the mounting seat (4211) is provided with an arc-shaped groove (4219) with an arc-shaped cross section. The outer surface of the cylindrical guide column (427) matches the arc-shaped groove (4219), and the guide column (427) is fixedly connected to the mounting seat (4211) by bolts.

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