High-precision mobile phone elastic piece laser welding machine

Abstract

The utility model discloses a high-precision mobile phone elastic piece laser welding machine which comprises a machine frame, the machine frame comprises a working table, and a mobile phone middle shell conveying system, a feeder feeding assembly, a mobile phone elastic piece feeding system, a CCD visual detection device and a laser welding system are installed on the working table. The mobile phone middle shell conveying system comprises a welding jig and a jig linear conveying module. The welding jig comprises a middle shell positioning mechanism and an elastic piece pressing mechanism. The mobile phone elastic piece feeding system is used for feeding mobile phone elastic pieces conveyed by the feeder feeding assembly to mobile phone middle shells in the welding jig, the mobile phone elastic piece feeding system comprises a feeding mechanical arm, a lifting mechanism is installed on the feeding mechanical arm, and a rotating mechanism is arranged at the power output end of the lifting mechanism. A material taking mechanism is arranged at the power output end of the rotating mechanism. The mobile phone middle shell and the mobile phone elastic piece cannot move in the transmission and welding process, the material taking and discharging precision is high, the direction and position of the mobile phone elastic piece can be adjusted, and the welding precision is high.

Description

Technical Field

[0001] The utility model relates to the technical field of laser welding equipment, in particular to a high-precision mobile phone shrapnel laser welding machine. Background Art

[0002] The laser welding process replaces traditional mechanical knives with laser beams. It offers advantages such as high precision, fast welding, no restrictions on welding patterns, smooth cuts, and low processing costs. Laser welding requires the use of a laser welding machine. A mobile phone midshell is one of the main structural components of a smartphone, and a mobile phone shrapnel is typically welded onto the midshell. Due to the aforementioned advantages of the laser welding process, the current process of welding mobile phone midshells and mobile phone shrapnel is gradually being performed using the laser welding process. However, current laser welding machines have the following major drawbacks when welding mobile phone shrapnel to the midshell: On the one hand, it is difficult to automatically feed the midshell and shrapnel; on the other hand, it is difficult to accurately place the shrapnel at the set position on the midshell; and on the other hand, it is difficult to press the shrapnel tightly against the midshell. During the laser welding process, the shrapnel is prone to displacement, resulting in inaccurate welding.

[0003] Refer to Chinese patent document CN215280389U, which discloses an automatic guided welding machine for mobile phone shrapnel, including a frame assembly, a mounting platform is provided in the frame assembly, a turntable assembly is provided in the middle of the mounting platform, a loading assembly and a welding assembly are provided on the side of the turntable assembly, the turntable assembly includes a turntable and a turntable drive, a certain number of positioning fixtures are evenly distributed on the outer periphery of the top surface of the turntable, the loading assembly includes a feeder and a four-axis robot, a shrapnel suction head module is provided at the end of the four-axis robot, the welding assembly includes a translation linear module, a lifting linear module at the movable end of the translation linear module and a laser welding module at the movable end of the lifting linear module, and a pressing module is provided on the mounting platform below the laser welding module. The welding machine can realize automatic loading and pressing of mobile phone shrapnel, but the welding machine also has the following technical defects: (1) There is no pressing device on the positioning jig of the welding machine. The welding machine relies on the pressing module below the laser welding module to press the material. When the mobile phone shrapnel is transferred to the positioning jig by the robot, the positioning jig and the mobile phone shrapnel on the positioning jig need to rotate step by step with the turntable assembly. Since the positioning jig will vibrate during the rotation process, it is easy to cause the mobile phone shrapnel on the positioning jig to be displaced. In addition, the positioning jig will accelerate or decelerate many times during the rotation process, which is also easy to cause the mobile phone shrapnel on the positioning jig to be displaced. This can easily cause the mobile phone shrapnel on the positioning fixture to shift under the action of inertia, which ultimately leads to the problem of inaccurate laser welding; (2) The shrapnel suction head module of the loading component of the welding machine cannot be lifted or rotated by itself, but relies on a four-axis robot to drive the shrapnel suction head module to rotate, which can easily reduce the material picking and placing accuracy of the shrapnel suction head module. After the shrapnel suction head module takes out the mobile phone shrapnel, the visual module does not detect whether the direction and position of the mobile phone shrapnel are correct, and the shrapnel suction head module cannot adjust the direction and position of the mobile phone shrapnel, which makes the mobile phone shrapnel placement less accurate, further leading to the problem of inaccurate laser welding. Utility Model Content

[0004] The technical problem to be solved by the present invention is to provide a high-precision mobile phone shrapnel laser welding machine based on the above-mentioned deficiencies in the prior art. The laser welding machine can use a welding jig to position the mobile phone middle shell and press the mobile phone shrapnel, so that the mobile phone middle shell and the mobile phone shrapnel will not be displaced during the transmission and welding process, so that the mobile phone shrapnel welding accuracy is high; the mobile phone shrapnel feeding system of the laser welding machine has a feeding mechanical arm, a lifting mechanism, a rotating mechanism and a picking mechanism, and has high picking and discharging accuracy. It can use a CCD visual detection device to detect whether the direction position of the mobile phone shrapnel is correct and adjust the direction position of the mobile phone shrapnel through the rotating mechanism, thereby further improving the feeding accuracy and welding accuracy of the mobile phone shrapnel.

[0005] In order to solve the above technical problems, the technical solution of the utility model is: a high-precision mobile phone shrapnel laser welding machine, comprising a frame, the frame comprising a workbench, on which are installed a mobile phone middle shell conveying system, a feeder feeding assembly, a mobile phone shrapnel feeding system, a CCD visual inspection device, a laser welding system and an outer cover, the outer cover is arranged outside the mobile phone middle shell conveying system, the feeder feeding assembly, the mobile phone shrapnel feeding system, the CCD visual inspection device and the laser welding system; the mobile phone middle shell conveying system comprises a welding jig and a jig linear conveying module, the welding jig is installed on the jig linear conveying module, the welding jig comprises a middle shell positioning mechanism for positioning the mobile phone middle shell and a shrapnel pressing mechanism for pressing the mobile phone shrapnel, the jig linear conveying module is used to weld The jig is moved to the working position of the mobile phone shrapnel feeding system and the laser welding system; the feeder feeding assembly is used to transfer the mobile phone shrapnel to the working position of the mobile phone shrapnel feeding system; the mobile phone shrapnel feeding system is used to load the mobile phone shrapnel transferred by the feeder feeding assembly onto the mobile phone middle shell in the welding jig, and the mobile phone shrapnel feeding system includes a loading robot arm, a lifting mechanism is installed on the loading robot arm, a rotating mechanism is provided at the power output end of the lifting mechanism, and a picking mechanism is provided at the power output end of the rotating mechanism; the CCD visual detection device is installed below the mobile phone shrapnel feeding system, and is used to visually detect the direction and position of the mobile phone shrapnel taken out by the picking mechanism; the laser welding system is used to laser weld the mobile phone middle shell and the mobile phone shrapnel in the welding jig together.

[0006] In the above technical solution, the feeder feeding assembly includes a first feeder feeding assembly and a second feeder feeding assembly arranged in parallel, the mobile phone shrapnel loading system includes a first mobile phone shrapnel loading system and a second mobile phone shrapnel loading system, the first mobile phone shrapnel loading system is used to load the mobile phone shrapnel conveyed by the first feeder feeding assembly onto the mobile phone middle shell in the welding jig, and the second mobile phone shrapnel loading system is used to load the mobile phone shrapnel conveyed by the second feeder feeding assembly onto the mobile phone middle shell in the welding jig; the CCD visual detection device includes a first CCD visual detection device and a second CCD visual detection device, the first CCD visual detection device is used to visually detect the direction and position of the mobile phone shrapnel taken out by the picking mechanism of the first mobile phone shrapnel feeding system, and the second CCD visual detection device is used to visually detect the direction and position of the mobile phone shrapnel taken out by the picking mechanism of the second mobile phone shrapnel feeding system; the mobile phone middle shell conveying system includes a first mobile phone middle shell conveying system and a second mobile phone middle shell conveying system.

[0007] In the above technical solution, the welding jig also includes a jig base, a support column, a lifting cylinder and an upper fixed plate, the support column and the lifting cylinder are respectively installed on the jig base, and the upper fixed plate is installed on the support column; the middle shell positioning mechanism of the welding jig includes a jig bottom plate, and a mobile phone middle shell limiting portion for positioning the mobile phone middle shell is provided on the jig bottom plate, the cylinder piston rod of the lifting cylinder extends upward and connects the jig bottom plate to drive the jig bottom plate to rise or fall; the upper fixed plate position The upper fixing plate is above the bottom plate of the jig, and a middle cavity is opened in the upper fixing plate, and the middle cavity corresponds to the upper and lower limiting part of the mobile phone middle shell; the shrapnel pressing mechanism of the welding jig includes a rack, a gear and a gear presser foot, the rack is vertically installed on the bottom plate of the jig, the gear is installed on the side of the middle cavity of the upper fixing plate, the rack is engaged with the gear, one end of the gear presser foot is connected to the side of the gear, and the other end of the gear presser foot extends to the top of the limiting part of the mobile phone middle shell, which is used to tighten or loosen the mobile phone shrapnel on the mobile phone middle shell.

[0008] In the above technical solution, there are four support columns, which are vertically installed on the four corners of the jig base, and the upper ends of the four support columns are connected to the four corners of the upper fixed plate respectively; there are two lifting cylinders, which are installed on the middle part of the jig base, and a floating joint is provided at the connection between the cylinder piston rod of the lifting cylinder and the jig base plate; several guide columns are vertically installed on the edge of the jig base, and the upper fixed plate is provided with several guide holes corresponding to the guide columns, and the guide columns are movably inserted into the corresponding guide holes; a notch is provided on the side of the central cavity of the upper fixed plate, and the rack moves through the notch; the spring clip pressing mechanism of the welding jig also includes a gear fixing block, a gear connecting shaft and a bearing, the gear fixing block is connected to the side wall of the notch, one end of the gear connecting shaft is connected to the gear fixing block, the bearing is installed on the gear connecting shaft, and the gear is installed on the bearing.

[0009] In the above technical solution, the feeder feeding assembly includes a feeder feeder, a feeder slide, a feeder guide rail, a magnet, a feeder baffle, an adjusting screw and an anti-collision rubber block. The feeder feeder is installed on the feeder slide, the feeder slide is slidably installed on the feeder guide rail, the magnet is installed on one side of the feeder slide, the lower end of the feeder baffle is connected to the end of the feeder guide rail, the adjusting screw is installed in the middle of the feeder baffle, the adjusting screw is magnetically engaged with the magnet, the anti-collision rubber block is installed at the upper end of the feeder baffle, and the anti-collision rubber block is pressed against one side of the feeder slide.

[0010] In the above technical solution, the mobile phone shrapnel loading system includes two square columns, the loading robot arm includes a robot arm X-axis linear transmission module and a robot arm Z-axis linear transmission module, the robot arm X-axis linear transmission module is horizontally installed on the two square columns, the robot arm Z-axis linear transmission module is vertically installed on the robot arm X-axis linear transmission module, and the lifting mechanism is installed on the robot arm Z-axis linear transmission module.

[0011] In the above technical solution, the lifting mechanism includes three lifting cylinders arranged in parallel, and the cylinder piston rod of each lifting cylinder extends downward and is connected to a motor mounting plate; the rotating mechanism includes three rotating motors, which are installed on corresponding motor mounting plates, and the rotating shafts of the rotating motors pass downward through the motor mounting plates; the material picking mechanism includes three material picking suction cups, and the lower ends of the rotating shafts of the rotating motors are connected to the corresponding material picking suction cups.

[0012] In the above technical solution, the CCD visual detection device includes a visual detection bracket, a CCD camera and a light source. The CCD camera is installed at the lower end of the visual detection bracket, and the light source is installed at the upper end of the visual detection bracket.

[0013] In the above technical solution, the laser welding system includes a square gantry, an X-axis linear transmission module of the welding system, a Z-axis linear transmission module of the welding system, a laser generator, a laser galvanometer and a visual positioning component. The X-axis linear transmission module of the welding system is horizontally installed on the square gantry, and the Z-axis linear transmission module of the welding system is vertically installed on the X-axis linear transmission module of the welding system. The laser galvanometer and the visual positioning component are respectively installed on the Z-axis linear transmission module of the welding system. The laser generator is installed in the frame, and the laser welder and the laser galvanometer are connected by an optical fiber.

[0014] The beneficial effects of the present invention are as follows: (1) Since the mobile phone middle shell transmission system of the present invention includes a welding jig and a jig linear transmission module, the welding jig is installed on the jig linear transmission module, and the welding jig includes a middle shell positioning mechanism for positioning the mobile phone middle shell and a shrapnel pressing mechanism for pressing the mobile phone shrapnel, the present invention can use the welding jig to position the mobile phone middle shell and press the mobile phone shrapnel, so that the mobile phone middle shell and the mobile phone shrapnel will not have displacement problems during the transmission and welding process, so that the mobile phone shrapnel welding accuracy is high; (2) Since the mobile phone shrapnel feeding system of the present invention includes a feeding robot arm, and the feeding robot arm is equipped with a lift The lifting mechanism is provided with a rotating mechanism at the power output end of the rotating mechanism, and a picking mechanism is provided at the power output end of the rotating mechanism. Therefore, the utility model can transmit the lifting mechanism, the rotating mechanism and the picking mechanism to the set position through the loading robot arm, and then realize picking and discharging through the mutual cooperation of the lifting mechanism, the rotating mechanism and the picking mechanism, and the picking and discharging accuracy is high; at the same time, since the CCD visual detection device is installed below the mobile phone shrapnel feeding system, it can visually detect whether the direction position of the mobile phone shrapnel taken out by the picking mechanism is correct and adjust the direction position of the mobile phone shrapnel through the rotating mechanism, thereby further improving the feeding accuracy and welding accuracy of the mobile phone shrapnel. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is the overall structure diagram of the high-precision mobile phone shrapnel laser welding machine.

[0016] Figure 2 This is one of the overall structural diagrams of the high-precision mobile phone shrapnel laser welding machine after removing the outer cover and frame.

[0017] Figure 3 This is a three-dimensional structural diagram of the mobile phone middle shell transmission system.

[0018] Figure 4 This is one of the three-dimensional structural diagrams of the welding fixture.

[0019] Figure 5 This is the second three-dimensional structural diagram of the welding fixture.

[0020] Figure 6 A three-dimensional structural diagram of the welding fixture positioning the mobile phone middle shell and pressing the mobile phone shrapnel.

[0021] Figure 7 This is a diagram of the dispersed structure of the welding fixture.

[0022] Figure 8 This is a combined structural diagram of a rack, a gear, a gear presser foot, a gear fixing block, a gear connecting shaft and a bearing.

[0023] Figure 9 This is a three-dimensional structural diagram of the feeder feeding component.

[0024] Figure 10 for Figure 9 A partial enlarged view of part A.

[0025] Figure 11 This is a three-dimensional structural diagram of the mobile phone shrapnel feeding system and CCD visual inspection device.

[0026] Figure 12 This is a three-dimensional structural diagram of the laser welding system. DETAILED DESCRIPTION

[0027] The structural principle and working principle of the present invention are further described in detail below with reference to the accompanying drawings.

[0028] like Figures 1-12 As shown, the utility model is a high-precision mobile phone shrapnel laser welding machine, comprising a frame 1, the frame 1 includes a workbench 11, on which are mounted a mobile phone middle shell conveying system 2, a feeder feeding assembly 3, a mobile phone shrapnel feeding system 4, a CCD visual inspection device 5 and a laser welding system 6, and on the workbench 11 is further mounted an outer cover 7, which is arranged outside the mobile phone middle shell conveying system 2, the feeder feeding assembly 3, the mobile phone shrapnel feeding system 4, the CCD visual inspection device 5 and the laser welding system 6, and an input control device 71 is mounted on the outer side of the outer cover 7; the mobile phone middle shell conveying system 2 includes a welding jig 21 and a jig linear transmission module 22, the welding jig 21 is mounted on the jig linear transmission module 22, the welding jig 21 includes a middle shell positioning mechanism for positioning the mobile phone middle shell 100 and a shrapnel pressing mechanism for pressing the mobile phone shrapnel 200, the jig linear transmission module 22 is used Move the welding jig 21 to the working position of the mobile phone shrapnel feeding system 4 and the laser welding system 6; the feeder feeding assembly 3 is used to transfer the mobile phone shrapnel 200 to the working position of the mobile phone shrapnel feeding system 4; the mobile phone shrapnel feeding system 4 is used to load the mobile phone shrapnel 200 transferred by the feeder feeding assembly 3 onto the mobile phone middle shell 100 in the welding jig 21, and the mobile phone shrapnel feeding system 4 includes a loading robot arm 41, and a lifting mechanism 42 is installed on the loading robot arm 41, and the power output end of the lifting mechanism 42 is provided with a rotating mechanism 43, and the power output end of the rotating mechanism 43 is provided with a picking mechanism 44; the CCD visual detection device 5 is installed below the mobile phone shrapnel feeding system 4, and is used to visually detect the direction and position of the mobile phone shrapnel 200 taken out by the picking mechanism 44; the laser welding system 6 is used to laser weld the mobile phone middle shell 100 and the mobile phone shrapnel 200 in the welding jig 21 together.

[0029] The welding method of the utility model high-precision mobile phone shrapnel laser welding machine includes the following welding steps:

[0030] S1 fixture linear transmission module 22 drives the welding fixture 21 to move to the loading position of the mobile phone shell 100, the shrapnel pressing mechanism of the welding fixture 21 is released, and the mobile phone shell 100 is placed on the shell positioning mechanism of the welding fixture 21 by a manipulator or a human hand;

[0031] S2. The linear transfer module 22 drives the welding jig 21 to move to the working position of the mobile phone shrapnel feeding system 4. At the same time, the feeder feeding assembly 3 drives the mobile phone shrapnel 200 material belt to move, so that the mobile phone shrapnel 200 material belt on the mobile phone shrapnel 200 is sequentially transferred to the working position of the mobile phone shrapnel feeding system 4;

[0032] S3. The feeding arm 41 of the mobile phone shrapnel feeding system 4 drives the lifting mechanism 42, the rotating mechanism 43 and the picking mechanism 44 to move to the feeding position of the feeder feeding assembly 3, the lifting mechanism 42 drives the rotating mechanism 43 and the picking mechanism 44 to descend, and the picking mechanism 44 removes the mobile phone shrapnel 200 from the material belt 200, and the lifting mechanism 42 then drives the rotating mechanism 43 and the picking mechanism 44 to rise;

[0033] S4. The CCD visual inspection device 5 detects the direction and position of the mobile phone shrapnel 200 removed by the picking mechanism 44 to determine whether the direction and position of the mobile phone shrapnel 200 is correct. If the direction and position of the mobile phone shrapnel 200 is incorrect, the rotating mechanism 43 of the mobile phone shrapnel feeding system 4 drives the picking mechanism 44 to rotate so that the direction and position of the mobile phone shrapnel 200 are adjusted to the correct position;

[0034] S5. The loading arm 41 of the mobile phone shrapnel feeding system 4 drives the lifting mechanism 42, the rotating mechanism 43 and the picking mechanism 44 to move above the welding fixture 21, the lifting mechanism 42 drives the rotating mechanism 43 and the picking mechanism 44 to descend, and the picking mechanism 44 places the mobile phone shrapnel 200 at a set position above the mobile phone middle shell 100. After the mobile phone shrapnel 200 is placed, the lifting mechanism 42 then drives the rotating mechanism 43 and the picking mechanism 44 to rise;

[0035] S6. The shrapnel pressing mechanism of the welding fixture 21 presses the mobile phone shrapnel 200 on the mobile phone shell 100;

[0036] S7 fixture linear transmission module 22 drives the welding fixture 21 to move to the working position of the laser welding system 6;

[0037] S8. The laser welding device laser welds the mobile phone middle shell 100 and the mobile phone shrapnel 200 in the welding fixture 21 together.

[0038] The present invention can use the welding fixture 21 to position the mobile phone middle shell 100 and press the mobile phone shrapnel 200, so that the mobile phone middle shell and the mobile phone shrapnel will not be displaced during the transmission and welding process, so that the welding accuracy of the mobile phone shrapnel is high; the present invention can use the loading mechanical arm to transmit the lifting mechanism, the rotating mechanism and the material picking mechanism to the set position, and then realize the picking and discharging of materials through the mutual cooperation of the lifting mechanism, the rotating mechanism and the material picking mechanism, and the picking and discharging of materials are high in accuracy; the present invention can visually detect whether the direction position of the mobile phone shrapnel taken out by the material picking mechanism is correct and adjust the direction position of the mobile phone shrapnel through the rotating mechanism, so as to further improve the loading accuracy and welding accuracy of the mobile phone shrapnel.

[0039] like Figure 1 、 Figure 2 and Figure 9 As shown, the feeder feeding assembly 3 includes a first feeder feeding assembly 301 and a second feeder feeding assembly 302 arranged in parallel, and the mobile phone shrapnel feeding system 4 includes a first mobile phone shrapnel feeding system 401 and a second mobile phone shrapnel feeding system 402. The first mobile phone shrapnel feeding system 401 is used to feed the mobile phone shrapnel 200 conveyed by the first feeder feeding assembly 301 onto the mobile phone middle shell 100 in the welding fixture 21, and the second mobile phone shrapnel feeding system 402 is used to feed the mobile phone shrapnel 200 conveyed by the second feeder feeding assembly 302 onto the mobile phone middle shell 100 in the welding fixture 21. 0 is loaded onto the mobile phone middle shell 100 in the welding fixture 21; the CCD visual inspection device 5 includes a first CCD visual inspection device 501 and a second CCD visual inspection device 502. The first CCD visual inspection device 501 is used to visually detect the direction and position of the mobile phone shrapnel 200 removed by the picking mechanism 44 of the first mobile phone shrapnel loading system 401, and the second CCD visual inspection device 502 is used to visually detect the direction and position of the mobile phone shrapnel 200 removed by the picking mechanism 44 of the second mobile phone shrapnel loading system 402. In the embodiment of the present utility model, there are two types of mobile phone shrapnel 200. The first type of mobile phone shrapnel 200 is conveyed by the first feeder feeding assembly 301 and loaded by the first mobile phone shrapnel loading system 401, and the second type of mobile phone shrapnel 200 is conveyed by the second feeder feeding assembly 301 and loaded by the second mobile phone shrapnel loading system 402. This allows the two types of mobile phone shrapnel 200 to be conveyed and loaded separately, resulting in accurate loading and high loading efficiency.

[0040] like Figure 1 and Figure 2As shown, the mobile phone middle shell conveying system 2 includes a first mobile phone middle shell conveying system 201 and a second mobile phone middle shell conveying system 202. While the mobile phone middle shell 100 and mobile phone shrapnel 200 on the first mobile phone middle shell conveying system 201 are being laser welded, the operator can rotate the mobile phone middle shell 100 onto the second mobile phone middle shell conveying system 202 and load the mobile phone shrapnel 200 through the second mobile phone shrapnel loading system 402. In this way, the two sets of mobile phone middle shell conveying systems 2 alternately load and weld, which can double the welding efficiency.

[0041] like Figure 3-Figure 8 As shown, the welding jig 21 also includes a jig base 211, a support column 212, a lifting cylinder 213 and an upper fixed plate 214, the support column 212 and the lifting cylinder 213 are respectively installed on the jig base 211, and the upper fixed plate 214 is installed on the support column 212; the middle shell positioning mechanism of the welding jig 21 includes a jig bottom plate 215, and a mobile phone middle shell limiting portion 2151 for positioning the mobile phone middle shell 100 is provided on the jig bottom plate 215, the cylinder piston rod of the lifting cylinder 213 extends upward and connects the jig bottom plate 215 to drive the jig bottom plate 215 to rise or fall; the upper fixed plate 214 is located above the jig bottom plate 215 The upper fixing plate 214 is provided with a middle cavity 2141, and the middle cavity 2141 corresponds to the upper and lower limit portion 2151 of the mobile phone middle shell; the shrapnel pressing mechanism of the welding jig 21 includes a rack 216, a gear 217 and a gear presser foot 218, the rack 216 is vertically installed on the jig bottom plate 215, and the gear 217 is installed on the side of the middle cavity 2141 of the upper fixing plate 214, the rack 216 is meshed with the gear 217, one end of the gear presser foot 218 is connected to the side of the gear 217, and the other end of the gear presser foot 218 extends to the top of the mobile phone middle shell limit portion 2151, and is used to tighten or loosen the mobile phone shrapnel 200 on the mobile phone middle shell 100. When the welding jig 21 is not pressing the mobile phone shrapnel 200, the cylinder piston rod of the lifting cylinder 213 is in a retracted state, and the gear presser foot 218 is in an upwardly raised state. When the mobile phone shrapnel 200 is placed on the mobile phone middle shell 100, the cylinder piston rod of the lifting cylinder 213 rises, driving the jig base 215 to rise. The jig base 215 then drives the rack 216 to move upward. The rack 216 then drives the gear 217 to rotate. Finally, the gear 217 drives the other end of the gear presser foot 218 to swing downward and press the mobile phone shrapnel 200. The welding jig 21 of the present invention can use the mobile phone middle shell limiting portion 2151 of the jig base 21 to position the mobile phone middle shell 100, and then use the gear presser foot 218 to press the mobile phone shrapnel 200. The positioning stability of the mobile phone middle shell 100 and the mobile phone shrapnel 200 is high.

[0042] like Figure 3-Figure 8As shown, there are four support columns 212, which are vertically mounted on the four corners of the jig base 211. The upper ends of the four support columns 212 are connected to the four corners of the upper fixed plate 214. There are two lifting cylinders 213, which are mounted on the middle of the jig base 211. The connection between the cylinder piston rods of the lifting cylinders 213 and the jig base 215 is equipped with a floating joint 2131. This can improve the installation stability of the upper fixed plate 214 and enhance the lifting stability of the jig base 21.

[0043] like Figure 3-Figure 8 As shown, a plurality of mobile phone middle shell limiting blocks 2152 and a plurality of mobile phone middle shell positioning pins 2153 are provided on the mobile phone middle shell limiting portion 2151 of the fixture bottom plate 215, which can further improve the positioning stability of the mobile phone middle shell 100.

[0044] like Figure 3-Figure 8 As shown, several guide columns 209 are vertically installed on the edge of the jig base plate 215, and the upper fixed plate 214 is provided with several guide holes 2142 corresponding to the guide columns 209. The guide columns 209 are movably inserted into the corresponding guide holes 2142, which can improve the lifting stability of the jig base plate 215.

[0045] like Figure 3-Figure 8 As shown, the central cavity 2141 of the upper fixing plate 214 is provided with a notch 2143 on the side, through which the rack 216 moves. The spring clip pressing mechanism of the welding jig 21 also includes a gear fixing block 2171, a gear connecting shaft 2172, and a bearing 2173. The gear fixing block 2171 is connected to the side wall of the notch 2143. One end of the gear connecting shaft 2172 is connected to the gear fixing block 2171. The bearing 2173 is mounted on the gear connecting shaft 2172, and the gear 217 is mounted on the bearing 2173. Five sets of the rack 216, gear 217, gear presser foot 218, notch 2143, gear fixing block 2171, gear connecting shaft 2172, and bearing 2173 are provided. The mobile phone middle case 100 in this embodiment requires welding five mobile phone spring clips 200, each of which is individually pressed by a gear presser foot 218.

[0046] like Figure 2 、 Figure 9 and Figure 10As shown, the flyer feeding assembly 3 includes a flyer feeder 31, a flyer slide 32, a flyer guide rail 33, a magnet 34, a flyer baffle 35, an adjusting screw 36 and an anti-collision rubber block 37. The flyer feeder 31 is installed on the flyer slide 32, and the flyer slide 32 is slidably installed on the flyer guide rail 33. The magnet 34 is installed on one side of the flyer slide 32, and the lower end of the flyer baffle 35 is connected to the end of the flyer guide rail 33. The adjusting screw 36 is installed in the middle of the flyer baffle 35, and the adjusting screw 36 is magnetically matched with the magnet 34. The anti-collision rubber block 37 is installed at the upper end of the flyer baffle 35, and the anti-collision rubber block 37 is pressed against one side of the flyer slide 32. By providing the feeder slide 32 and the feeder guide rail 33, the feeder feeder 31 can be conveniently moved out of or into the laser welding machine so as to replace a new mobile phone shrapnel roll; by providing the magnet 34 and the adjusting screw 36, on the one hand, the feeder slide 32 can be magnetically positioned by the magnet, and on the other hand, the position of the feeder feeder 31 can be fine-tuned by the adjusting screw.

[0047] like Figure 1 、 Figure 2 and Figure 11 As shown, the mobile phone shrapnel feeding system 4 includes two square columns 45, and the feeding robot 41 includes a robot X-axis linear transmission module 411 and a robot Z-axis linear transmission module 412. The robot X-axis linear transmission module 411 is horizontally installed on the two square columns 45, and the robot Z-axis linear transmission module 415 is vertically installed on the robot X-axis linear transmission module 411. The lifting mechanism 42 is installed on the robot Z-axis linear transmission module 412.

[0048] like Figure 1 、 Figure 2 and Figure 11 As shown, the lifting mechanism 42 includes three parallel lifting cylinders, each with a piston rod extending downward and connected to a motor mounting plate. The rotating mechanism 43 includes three rotating motors, which are mounted on corresponding motor mounting plates, with their rotating shafts extending downward through the motor mounting plates. The retrieving mechanism 44 includes three retrieving suction cups, with the lower ends of the rotating motor shafts connected to the corresponding retrieving suction cups. The arrangement of three lifting cylinders, three rotating mechanisms, and three retrieving suction cups enables the present invention to simultaneously pick up and load three mobile phone shrapnel.

[0049] like Figure 1 、 Figure 2 and Figure 11 As shown, the CCD visual detection device 5 includes a visual detection bracket 51, a CCD camera 52 and a light source 53. The CCD camera 52 is installed at the lower end of the visual detection bracket 51, and the light source 53 is installed at the upper end of the visual detection bracket 51.

[0050] like Figure 1 、 Figure 2 and Figure 12 As shown, the laser welding system 6 includes a square gantry 61, a welding system X-axis linear transmission module 62, a welding system Z-axis linear transmission module 63, a laser generator, a laser galvanometer 65 and a visual positioning component 66. The welding system X-axis linear transmission module 62 is horizontally installed on the square gantry 61, and the welding system Z-axis linear transmission module 63 is vertically installed on the welding system X-axis linear transmission module 62. The laser galvanometer 65 and the visual positioning component 66 are respectively installed on the welding system Z-axis linear transmission module 62. The laser generator is installed in the frame 1, and the laser welder is connected to the laser galvanometer 65 through an optical fiber.

[0051] The above description is only a preferred embodiment of the present invention. Any slight modifications, equivalent changes and modifications made to the above embodiments based on the technical solution of the present invention are within the scope of the technical solution of the present invention.

Claims

1. A high-precision mobile phone shrapnel laser welding machine, characterized by: The machine comprises a frame, which comprises a workbench, on which a mobile phone middle shell conveying system, a feeder feeding assembly, a mobile phone shrapnel feeding system, a CCD visual inspection device, a laser welding system and an outer cover are installed, and the outer cover is arranged outside the mobile phone middle shell conveying system, the feeder feeding assembly, the mobile phone shrapnel feeding system, the CCD visual inspection device and the laser welding system; the mobile phone middle shell conveying system comprises a welding jig and a jig linear conveying module, the welding jig is installed on the jig linear conveying module, the welding jig comprises a middle shell positioning mechanism for positioning the mobile phone middle shell and a shrapnel pressing mechanism for pressing the mobile phone shrapnel, the jig linear conveying module is used to move the welding jig to the mobile phone shrapnel feeding system and the laser welding system The working position of the connecting system; the feeder feeding assembly is used to transfer the mobile phone shrapnel to the working position of the mobile phone shrapnel feeding system; the mobile phone shrapnel feeding system is used to load the mobile phone shrapnel transferred by the feeder feeding assembly onto the mobile phone middle shell in the welding jig, and the mobile phone shrapnel feeding system includes a loading robot arm, a lifting mechanism is installed on the loading robot arm, a rotating mechanism is provided at the power output end of the lifting mechanism, and a picking mechanism is provided at the power output end of the rotating mechanism; the CCD visual detection device is installed below the mobile phone shrapnel feeding system, and is used for visually detecting the direction and position of the mobile phone shrapnel taken out by the picking mechanism; the laser welding system is used to laser weld the mobile phone middle shell and the mobile phone shrapnel in the welding jig together.

2. The high-precision mobile phone shrapnel laser welding machine according to claim 1 is characterized in that: The feeder feeding assembly includes a first feeder feeding assembly and a second feeder feeding assembly arranged in parallel, and the mobile phone shrapnel loading system includes a first mobile phone shrapnel loading system and a second mobile phone shrapnel loading system. The first mobile phone shrapnel loading system is used to load the mobile phone shrapnel conveyed by the first feeder feeding assembly onto the mobile phone middle shell in the welding jig, and the second mobile phone shrapnel loading system is used to load the mobile phone shrapnel conveyed by the second feeder feeding assembly onto the mobile phone middle shell in the welding jig; the CCD visual detection device includes a first CCD visual detection device and a second CCD visual detection device. The first CCD visual detection device is used to visually detect the direction and position of the mobile phone shrapnel taken out by the picking mechanism of the first mobile phone shrapnel loading system, and the second CCD visual detection device is used to visually detect the direction and position of the mobile phone shrapnel taken out by the picking mechanism of the second mobile phone shrapnel loading system.

3. The high-precision mobile phone shrapnel laser welding machine according to claim 1 is characterized in that: The mobile phone middle shell conveying system includes a first mobile phone middle shell conveying system and a second mobile phone middle shell conveying system.

4. The high-precision mobile phone shrapnel laser welding machine according to claim 1 is characterized in that: The welding jig also includes a jig base, a support column, a lifting cylinder and an upper fixed plate, the support column and the lifting cylinder are respectively installed on the jig base, and the upper fixed plate is installed on the support column; the middle shell positioning mechanism of the welding jig includes a jig bottom plate, and a mobile phone middle shell limiting portion for positioning the mobile phone middle shell is provided on the jig bottom plate, and the cylinder piston rod of the lifting cylinder extends upward and is connected to the jig bottom plate to drive the jig bottom plate to rise or fall; the upper fixed plate is located above the jig bottom plate, and the upper fixed plate is provided with a middle cavity, which corresponds to the mobile phone middle shell limiting portion up and down; the shrapnel pressing mechanism of the welding jig includes a rack, a gear and a gear presser foot, the rack is vertically installed on the jig bottom plate, the gear is installed on the side of the middle cavity of the upper fixed plate, the rack is meshed with the gear, one end of the gear presser foot is connected to the side of the gear, and the other end of the gear presser foot extends above the mobile phone middle shell limiting portion, for pressing or loosening the mobile phone shrapnel on the mobile phone middle shell.

5. The high-precision mobile phone shrapnel laser welding machine according to claim 4 is characterized in that: There are four support columns, which are vertically installed on the four corners of the jig base, and the upper ends of the four support columns are connected to the four corners of the upper fixed plate respectively; there are two lifting cylinders, which are installed on the middle part of the jig base, and a floating joint is provided at the connection between the cylinder piston rod of the lifting cylinder and the jig base plate; several guide columns are vertically installed on the edge of the jig base, and the upper fixed plate is provided with several guide holes corresponding to the guide columns, and the guide columns are movably inserted into the corresponding guide holes; a notch is provided on the side of the central cavity of the upper fixed plate, and the rack moves through the notch; the spring clip pressing mechanism of the welding jig also includes a gear fixing block, a gear connecting shaft and a bearing, the gear fixing block is connected to the side wall of the notch, one end of the gear connecting shaft is connected to the gear fixing block, the bearing is installed on the gear connecting shaft, and the gear is installed on the bearing.

6. The high-precision mobile phone shrapnel laser welding machine according to claim 1, characterized in that: The feeder feeding assembly includes a feeder feeder, a feeder slide, a feeder guide rail, a magnet, a feeder baffle, an adjusting screw and an anti-collision rubber block. The feeder feeder is installed on the feeder slide, the feeder slide is slidably installed on the feeder guide rail, the magnet is installed on one side of the feeder slide, the lower end of the feeder baffle is connected to the end of the feeder guide rail, the adjusting screw is installed in the middle of the feeder baffle, the adjusting screw is magnetically engaged with the magnet, the anti-collision rubber block is installed on the upper end of the feeder baffle, and the anti-collision rubber block is abutted against one side of the feeder slide.

7. The high-precision mobile phone shrapnel laser welding machine according to claim 1 is characterized in that: The mobile phone shrapnel loading system includes two square columns, and the loading robotic arm includes a robotic arm X-axis linear transmission module and a robotic arm Z-axis linear transmission module. The robotic arm X-axis linear transmission module is horizontally installed on the two square columns, and the robotic arm Z-axis linear transmission module is vertically installed on the robotic arm X-axis linear transmission module. The lifting mechanism is installed on the robotic arm Z-axis linear transmission module.

8. The high-precision mobile phone shrapnel laser welding machine according to claim 1 is characterized in that: The lifting mechanism includes three lifting cylinders arranged in parallel, and the cylinder piston rod of each lifting cylinder extends downward and is connected to a motor mounting plate; the rotating mechanism includes three rotating motors, which are installed on corresponding motor mounting plates, and the rotating shafts of the rotating motors pass downward through the motor mounting plates; the material picking mechanism includes three material picking suction cups, and the lower ends of the rotating shafts of the rotating motors are connected to the corresponding material picking suction cups.

9. The high-precision mobile phone shrapnel laser welding machine according to claim 1, characterized in that: The CCD visual detection device includes a visual detection bracket, a CCD camera and a light source. The CCD camera is installed at the lower end of the visual detection bracket, and the light source is installed at the upper end of the visual detection bracket.

10. The high-precision mobile phone shrapnel laser welding machine according to claim 1, characterized in that: The laser welding system includes a square gantry, an X-axis linear transmission module of the welding system, a Z-axis linear transmission module of the welding system, a laser generator, a laser galvanometer and a visual positioning component. The X-axis linear transmission module of the welding system is horizontally installed on the square gantry, and the Z-axis linear transmission module of the welding system is vertically installed on the X-axis linear transmission module of the welding system. The laser galvanometer and the visual positioning component are respectively installed on the Z-axis linear transmission module of the welding system. The laser generator is installed in the frame, and the laser welder and the laser galvanometer are connected by an optical fiber.

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