An automatic welding device for iron shell parts based on SMT printing

Abstract

The present application relates to the field of equipment for manufacturing printed circuit, and particularly relates to an automatic welding device for SMT printed iron shell parts, which comprises an assembling table and a reflow soldering furnace; the reflow soldering furnace comprises a placing table capable of reciprocating along the length direction of the reflow soldering furnace and used for placing a primary assembly or an assembled part; a smearing part capable of smearing solder paste on the primary assembly placed on the placing table is installed on the reflow soldering furnace; a transfer part capable of transferring the primary assembly or the assembled part placed on the assembling table to the placing table and transferring the primary assembly with the smearing solder paste placed on the placing table to the assembling table is arranged beside the assembling table; and a mounting part for mounting the iron shell part on the primary assembly with the smearing solder paste placed on the assembling table is also arranged beside the assembling table. The existing welding method has the problems of low welding precision and low efficiency, and the device provided by the present application has high welding precision and high efficiency.

Description

Technical Field

[0001] This invention relates to the field of equipment for manufacturing printed circuits, and more specifically to an automated welding apparatus for metal casings based on SMT printing. Background Technology

[0002] Miniaturization refers to the process of designing and manufacturing smaller, more compact electronic devices. The miniaturization of electronic devices is driven by several factors, including the demand for portable devices and the need for more functionality in smaller devices.

[0003] Surface Mount Technology (SMT) is one of the core technologies supporting the miniaturization of electronic devices. SMT comprises two key steps: printing and placement. SMT printing refers to the process of printing solder paste onto a printed circuit board using a stencil. Solder paste is a viscous substance containing solder particles that melts when heated to form a strong electrical connection. SMT placement is the process of placing surface mount components onto the printed circuit board containing the solder paste.

[0004] After SMT printing and SMT placement are completed, surface mount components need to be soldered onto the printed circuit board. The accuracy of the SMT printing process directly affects the quality of SMT placement and soldering.

[0005] The existing soldering method involves feeding a printed circuit board (PCB) with surface mount components (SRP) onto it into a reflow oven. The solder particles in the solder paste melt and wet the SRP leads and PCB pads. After cooling and solidification, a strong electrical connection is formed between the SRP leads and the PCB pads. However, when applying the solder paste, the PCB is manually held in place by a stencil, and a hand scraper pushes the solder paste into openings in the stencil. This results in low soldering precision, affecting the quality of the final product and reducing efficiency.

[0006] Therefore, existing welding methods suffer from low welding precision and low efficiency. Summary of the Invention

[0007] The technical problem to be solved by the present invention is to overcome the shortcomings of the prior art and provide an automated welding device for iron shell parts based on SMT printing with high welding accuracy and high efficiency.

[0008] To solve the above-mentioned technical problems, the present invention provides an automated welding device for iron shell parts based on SMT printing, including an assembly table for placing pre-assembled parts and a reflow oven for heating and welding the assembled parts.

[0009] The reflow oven includes a placement platform for placing a pre-assembled component or an assembled component that can reciprocate along the length of the reflow oven; and an applicator is installed on the reflow oven for applying solder paste to the pre-assembled component placed on the placement platform.

[0010] Next to the assembly table is a transfer unit that can transfer the pre-assembled parts or assembled parts placed on the assembly table to the placement table, and can also transfer the pre-assembled parts with solder paste applied placed on the placement table to the assembly table.

[0011] Next to the assembly table, there are also mounting parts for installing the metal shell parts on the pre-assembled parts that have been coated with solder paste and placed on the assembly table.

[0012] As a further improvement of the present invention: the reflow oven includes a base, a placement platform is slidably mounted on the top of the base, and a furnace chamber for heating and welding the assembly placed on the placement platform is provided on the front side of the top of the base.

[0013] As a further improvement of the present invention: the coating component includes a lifting mounting plate, the bottom of which is equipped with a first slider that can slide back and forth, and the first slider is equipped with a multi-nozzle nozzle for spraying solder paste and a lifting scraper.

[0014] A template is installed below the scraper, and the template is fixedly connected to the bottom of the mounting plate by four connecting posts;

[0015] Each connecting post is fixedly fitted with a circular ring plate. Each of the four connecting posts is slidably fitted with a limiting block for limiting the four corners of the assembly. The part of the connecting post located between the circular ring plate and the limiting block is fitted with a first return spring. The top of the first return spring is fixedly connected to the bottom of the circular ring plate, and the bottom of the first return spring is fixedly connected to the top of the limiting block.

[0016] As a further improvement of the present invention: the transfer member includes a first plate that can rotate about the vertical direction and can be raised and lowered, and the top of the first plate is provided with a transfer fork that can slide back and forth along the length direction of the first plate for transferring the initial assembly or the assembly.

[0017] Preferably, the transfer fork has a U-shaped structure, including two vertical ends and one horizontal end. The lower vertical end of the transfer fork is composed of two parallel strip plates. The top of both the assembly table and the placement table is provided with a groove for each strip plate to slide along the length of the assembly table or the placement table.

[0018] The transfer fork has a clamping element on its upper vertical end for clamping the iron shell part.

[0019] Clamping components prevent displacement and deviation of the metal shell parts during assembly transfer.

[0020] Preferably, the clamping component includes a second plate that can be raised and lowered; a shaped plate that can move towards or away from each other is mounted on the second plate; and a push plate that corresponds to the number and position of the iron shell parts mounted on the assembly is mounted on the bottom of the shaped plate.

[0021] As a further improvement of the present invention: the mounting component includes an L-shaped frame that can move back and forth. The L-shaped frame is composed of a horizontal end and a vertical end. A metal shell placement platform for placing multiple metal shell parts is provided next to the vertical end of the L-shaped frame. A liftable long plate is installed at the bottom of the horizontal end of the L-shaped frame. A clamping member that can slide left and right is installed at the bottom of the long plate for clamping the metal shell parts on the metal shell placement platform.

[0022] Preferably, the clamping component includes a second slider that can slide at the bottom of the long plate, a small frame that can rotate around in the vertical direction, a horizontal rotating shaft mounted on the small frame, an L-shaped plate fixedly mounted on the rotating shaft, the L-shaped plate being composed of a long end and a short end, and a clamping plate that can reciprocate in a direction perpendicular to the short end of the L-shaped plate is vertically mounted on the long end of the L-shaped plate.

[0023] Preferably, a cleaning component is installed on the vertical end of the L-shaped frame, which is equipped with a cleaning device for cleaning the iron shell component held by the clamping device. The cleaning component can clean the inside of the iron shell component, ensuring the quality of the connection.

[0024] Preferably, the cleaning component includes a wiping block that can reciprocate along a direction perpendicular to the vertical end of the L-shaped frame and can extend into the iron shell component. The wiping block is a sponge. A horizontal eighth telescopic component is fixedly installed on the vertical end of the L-shaped frame to drive the wiping block to reciprocate along a direction perpendicular to the vertical end of the L-shaped frame.

[0025] The beneficial effects of the present invention are as follows: The automated welding device for iron shell parts based on SMT printing provided by the present invention has high welding accuracy and high efficiency.

[0026] This device automates the application of solder paste to pre-assembled components, replacing manual labor with automation, significantly improving application efficiency and final welding quality. Simultaneously, the installation of metal shell components is also performed using an installation unit, greatly increasing efficiency and ensuring more precise installation. Furthermore, the device utilizes the placement platform within the reflow oven as a solder paste application workbench, saving space. Attached Figure Description

[0027] Figure 1 This is a schematic diagram of the overall structure of the bakelite base in this invention;

[0028] Figure 2 This is a schematic diagram of the overall structure of the magnetic aluminum plate carrier of the present invention;

[0029] Figure 3 This is a schematic diagram of the overall structure of the magnetic aluminum plate carrier in this invention from another angle;

[0030] Figure 4 This is a schematic diagram of the overall structure of the FPC in this invention;

[0031] Figure 5 This is a schematic diagram of the overall structure of the initial assembly of the present invention, which has an iron shell component installed.

[0032] Figure 6 This is a schematic diagram of the overall structure of the present invention;

[0033] Figure 7 This is a schematic diagram of the overall structure of the present invention from another angle;

[0034] Figure 8 This is a top view of the present invention;

[0035] Figure 9 This is a schematic diagram of the overall structure of the reflow oven in this invention;

[0036] Figure 10 This is a schematic diagram of the overall structure of the coating component in this invention;

[0037] Figure 11 This is a rear view of the coating component in this invention;

[0038] Figure 12 This is a partial structural diagram of the coating component in this invention;

[0039] Figure 13 This is a schematic diagram of the overall structure of the limiting block in this invention;

[0040] Figure 14 This is a schematic diagram showing the positional relationship between the transfer component, the placement platform, and the assembly platform in this invention;

[0041] Figure 15 This is a schematic diagram of the overall structure of the first slider, the multi-nozzle nozzle, and the scraper in this invention;

[0042] Figure 16 This is a schematic diagram of the overall structure of the transfer fork and clamping component in this invention;

[0043] Figure 17 This is a schematic diagram of the overall structure of the clamping component in this invention;

[0044] Figure 18 This is a schematic diagram showing the positional relationship between the irregular plate, the fifth telescopic component, and the actuating plate in this invention;

[0045] Figure 19 This is a schematic diagram of the overall structure of the mounting component and the cleaning component in this invention;

[0046] Figure 20 This is a schematic diagram of the overall structure of the clamping component in this invention;

[0047] Figure 21 This is a perspective view of the structure of the cleaning component and the vertical end of the L-shaped frame in this invention;

[0048] The names of the components marked in the above figures are as follows: 1011, Bakelite base; 10111, Positioning pin; 1012, Magnetic aluminum plate carrier; 10121, Positioning pin hole of the clearance base; 10122, Groove for the clearance metal shell; 1013, FPC; 10131, Mounting hole; 104, Metal shell;

[0049] 2. Assembly table;

[0050] 3. Reflow oven; 301. Placement platform; 302. Base; 303. Furnace chamber;

[0051] 4. Coating component; 401. Mounting plate; 4011. Connecting post; 4012. Circular ring; 4013. Limiting block; 4014. First return spring; 402. Multi-nozzle nozzle; 403. Scraper; 404. Template; 4041. Opening;

[0052] 5. Transfer component; 501. First flat plate; 502. Transfer fork; 503. Third motor; 504. Third telescopic component;

[0053] 6. Clamping component; 601. Second slider; 602. Small frame; 603. L-shaped plate; 604. Clamping plate; 605. Seventh motor; 606. Eighth motor; 607. Seventh telescopic component;

[0054] 7. Installation components; 701. L-shaped frame; 702. Metal shell placement platform; 703. Long plate; 704. Sixth telescopic component;

[0055] 8. Clamping component; 801. Second flat plate; 802. Irregularly shaped plate; 803. Fifth telescopic component; 804. Pressing plate;

[0056] 9. Cleaning component; 901. Wiping block; 902. Eighth telescopic component. Detailed Implementation

[0057] The specific embodiments of the present invention will be described in further detail below with reference to the accompanying drawings.

[0058] In this invention, the directional terms such as "up," "down," "left," "right," "front," "back," "top," and "bottom" are all used in conjunction with... Figure 8 The direction defined by the central cross-shaped directional marker is the reference. In this invention, all directional terms are described based on this definition and do not change the direction they represent regardless of the angle of the diagram.

[0059] Definitions of relevant terms used in this invention:

[0060] (1) Metal housing: also known as metal housing, metal housing kit, connector, common brand is I-PEX;

[0061] (2) FPC: Flexible Printed Circuit.

[0062] like Figure 6 , Figure 7 , Figure 8 , Figure 9 As shown, this invention provides an automated welding device for metal casings based on SMT printing. It is characterized by comprising an assembly table 2 for placing pre-assembled components and a reflow oven 3 for heating and welding the assembled components. Each of the four sides of the assembly table 2 is equipped with a baffle capable of reciprocating along a direction perpendicular to that side. The reflow oven 3 includes a placement table 301 and a base 302 for placing pre-assembled components or assembled components, both capable of reciprocating along the length of the reflow oven 3. The placement table 301 is slidably mounted on top of the base 302. A furnace chamber 303 for heating and welding the assembled components placed on the placement table 301 is located on the front side of the top of the base 302. The furnace door of the furnace chamber 303 is located on the left side of the furnace chamber 303 and can rotate vertically. The furnace door closes when the placement table 301 enters the furnace chamber. A horizontal first lead screw capable of rotating in the left and right directions and a horizontal first motor for driving the first lead screw to rotate in the left and right directions are rotatably mounted on the base 302. A first lead screw nut that matches the first lead screw is provided on the first lead screw, and the first lead screw nut is fixedly connected to the bottom of the placement platform 301.

[0063] like Figure 5 , Figure 6 , Figure 7 , Figure 8 , Figure 10 , Figure 11 , Figure 12 , Figure 13 , Figure 15As shown, a coating component 4 is installed on the reflow oven 3 to apply solder paste to the pre-assembled components placed on the placement table 301. The solder paste is 0.18mm steel plate printed solder paste. The coating component 4 includes a lifting mounting plate 401, and a first slider that can slide back and forth is installed at the bottom of the mounting plate 401. A multi-nozzle nozzle 402 for spraying solder paste and a lifting scraper 403 are installed on the first slider. The inlet of the multi-nozzle nozzle 402 is connected to the solder paste container through a delivery pipe, and the solder paste container is connected to the air tank through a vent pipe. A pressure regulating valve for precise control of air pressure is provided on the vent pipe. A first mounting frame is provided at the top of the furnace chamber 303 of the reflow oven 3. A vertical first telescopic component for driving the mounting plate 401 to rise and fall is fixedly installed on the first mounting frame. A vertical second telescopic component for driving the scraper 403 to rise and fall is installed on the first slider. The bottom of the mounting plate 401 is equipped with a horizontal second lead screw capable of rotating in the left-right direction. A horizontal second motor is mounted on the mounting plate 401 to drive the second lead screw to rotate in the front-back direction. A second lead screw nut, matching the second lead screw, is fixedly connected to the top of the first slider. Below the scraper 403 is a template 404, which is fixedly connected to the bottom of the mounting plate 401 via four connecting posts 4011. The template 404 has multiple openings 4041 for solder paste to pass through; the openings 4041 are square in shape and have a size of 0.8mm * 0.8mm. Each connecting post 4011 is fixedly sleeved with a circular ring plate 4012. Each of the four connecting posts 4011 is slidably sleeved with a limiting block 4013 for limiting the four corners of the assembly. The part of the connecting post 4011 between the circular ring plate 4012 and the limiting block 4013 is sleeved with a first return spring 4014. The top of the first return spring 4014 is fixedly connected to the bottom of the circular ring plate 4012, and the bottom of the first return spring 4014 is fixedly connected to the top of the limiting block 4013.

[0064] like Figure 6 , Figure 7 , Figure 8 , Figure 14 , Figure 16 , Figure 17 , Figure 18As shown, a transfer component 5 is provided next to the assembly table 2, capable of transferring pre-assembled parts or assembled parts placed on the assembly table 2 to the placement table 301, and capable of transferring pre-assembled parts with solder paste applied to the placement table 301 to the assembly table 2. The transfer component 5 includes a first plate 501 that can rotate in the vertical direction and can be raised and lowered, a vertical third motor 503 for driving the first plate to rotate in the vertical direction, and a vertical third telescopic component 504 for driving the third motor 503 to rise and fall. The top of the first plate 501 is provided with a transfer fork 502 that can slide back and forth along the length of the first plate 501 for transferring pre-assembled parts or assembled parts. The top of the first plate 501 is provided with a horizontal third lead screw that can rotate in the left and right direction. A horizontal fourth motor is installed on the first plate 501 for driving the third lead screw to rotate in the front and back direction. A third lead screw nut that matches the third lead screw is provided on the third lead screw. The third lead screw nut is fixedly connected to the bottom of the transfer fork 502. The transfer fork 502 has a U-shaped structure, including two vertical ends and one horizontal end. The lower vertical end of the transfer fork 502 is composed of two parallel strip plates. The top of both the assembly platform 2 and the placement platform 301 are provided with sliding grooves for each strip plate to slide along the length of the assembly platform 2 or the placement platform 301. The upper vertical end of the transfer fork 502 is provided with a clamping member 8 for clamping the iron shell parts. The clamping member 8 includes a second plate 801 that can be raised and lowered. A fourth telescopic member for driving the second plate 801 to be raised and lowered is fixedly installed on the upper vertical end of the transfer fork 502. The second plate 801 is equipped with irregularly shaped plates 802 that can move towards or away from each other. The second plate 801 is equipped with two horizontal fifth telescopic members 803, which are used to drive the two irregularly shaped plates 802 to move towards or away from each other. The bottom of the irregularly shaped plates 802 is equipped with a push plate 804 that corresponds to the number and position of the iron shell parts 104 installed on the assembly.

[0065] like Figure 6 , Figure 7 , Figure 8 , Figure 19 , Figure 20 , Figure 21As shown, a mounting component 7 is also provided next to the assembly table 2 for mounting the metal shell parts 104 on the pre-assembled parts with solder paste applied on the assembly table 2. The mounting component 7 includes an L-shaped frame 701 that can move back and forth. The L-shaped frame 701 consists of a horizontal end and a vertical end. Next to the vertical end of the L-shaped frame 701, a metal shell part placement platform 702 for placing multiple metal shell parts 104 is provided. A lifting and lowering long plate 703 is installed at the bottom of the horizontal end of the L-shaped frame 701. A clamping component 6 that can slide left and right for clamping the metal shell parts 104 on the metal shell part placement platform 702 is installed at the bottom of the long plate 703. A vertical plate is fixedly installed on the side of the placement platform 702 near the vertical end of the L-shaped frame 701. A horizontal fourth lead screw is installed on the vertical plate. A horizontal fifth motor for driving the fourth lead screw to rotate in the back and forth direction is installed on the vertical plate. A fourth lead screw nut that matches the fourth lead screw is provided on the fourth lead screw. The fourth lead screw nut is fixedly connected to the vertical end of the L-shaped frame 701. The horizontal end of the L-shaped frame 701 is provided with a sixth telescopic component 704 for driving the long plate 703 to rise and fall. A horizontal fifth lead screw is rotatably mounted on the bottom of the long plate 703. A horizontal sixth motor is mounted on the long plate 703 for driving the fifth lead screw to rotate in the left and right direction. A fifth lead screw nut that matches the fifth lead screw is provided on the fifth lead screw. The fifth lead screw nut is fixedly connected to the clamping component 6. The clamping component 6 includes a second slider 601 that can slide on the bottom of the long plate 703, and a small frame 602 that can rotate in the vertical direction. A horizontal rotating shaft is mounted on the small frame 602, and an L-shaped plate 603 is fixedly mounted on the rotating shaft. The L-shaped plate 603 consists of a long end and a short end. A clamping plate 604 that can reciprocate in a direction perpendicular to the short end of the L-shaped plate 603 is vertically mounted on the long end of the L-shaped plate 603. Through the cooperation between the clamping plate 604 and the short end of the L-shaped plate 603, the iron shell 104 can be clamped between the clamping plate 604 and the short end of the L-shaped plate 603. A vertical seventh motor 605 for driving the small frame 602 to rotate in the vertical direction is fixedly mounted on the bottom of the second slider 601. An eighth motor 606 for driving the rotating shaft to rotate is mounted on the small frame 602. A seventh telescopic component 607 for driving the clamping plate 604 to rise and fall is fixedly mounted on the long end of the L-shaped plate 603. A cleaning component 9, which is equipped with a metal shell for clamping by a cleaning clamp 6, is installed on the vertical end of the L-shaped frame 701. The cleaning component 9 includes a wiping block 901 that can reciprocate in a direction perpendicular to the vertical end of the L-shaped frame 701 and can extend into the metal shell 104. The wiping block 901 is a sponge. A horizontal eighth telescopic component 902 is fixedly installed on the vertical end of the L-shaped frame 701 to drive the wiping block 901 to reciprocate in a direction perpendicular to the vertical end of the L-shaped frame 701.

[0066] The working principle of this invention is as follows: Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5As shown, the assembly bakelite base 1011 is first placed on the assembly table 2, and then the magnetic aluminum plate carrier 1012 is placed on the assembly bakelite base 1011. The magnetic aluminum plate carrier 1012 has slots 10122 for positioning the iron shell parts, so that the positioning pins on the assembly bakelite base 1011 are inserted into the positioning pin holes 10121 of the magnetic aluminum plate carrier 1012. The diameter of the positioning pins 10111 is 4.1mm. The FPC 1013 is then placed on the magnetic aluminum plate carrier 1012 to obtain the initial assembly.

[0067] The fourth motor starts, driving the third lead screw to rotate, causing the third lead screw nut to move closer to the assembly table 2, which in turn drives the transfer fork 502 to move closer to the assembly table 2. The strip plates of the transfer fork 502 are inserted into the two slides of the assembly table 2 respectively. The telescopic end of the third telescopic component 504 extends, driving the third motor 503 to rise, thereby driving the first plate 501 to rise, and then driving the transfer fork 502 to rise. The two strip plates of the transfer fork 502 will carry the initial assembly components to rise. The fourth motor reverses, driving the transfer fork 502 to move away from the assembly table 2. After the transfer fork 502 returns to its initial position, the third motor 503 rotates, driving the transfer fork 502 to rotate 90° so that the opening of the transfer fork 502 faces the placement table 301. The third motor 503 stops rotating, and the fourth motor starts, driving the third lead screw to rotate, causing the transfer fork 502 to move closer to the placement table 301. After the transfer fork 502 has completely reached the top of the placement table 301, the telescopic end of the third telescopic component 504 shortens, thereby driving the transfer fork 502 to descend. The strip plates of the transfer fork 502 are inserted into the two sliding grooves of the placement table 301 until the bottom of the initial assembly contacts the top of the placement table 301. The fourth motor reverses, driving the transfer fork 502 away from the placement table 301 and back to its initial position.

[0068] The telescopic end of the first telescopic component extends, causing the mounting plate 401 to move downwards. The bottoms of the four limiting blocks 4013 will first contact the top of the placement platform 301, confining the assembly within the four limiting blocks 4013 to prevent displacement of the assembly during solder paste application. Under the constraint of the placement platform 301, the limiting blocks 4013 no longer move downwards, but the mounting plate 401 will still move downwards, causing the connecting column 4011 to slide downwards within each limiting block. The first return spring 4014 is compressed. After the bottom of the template 404 contacts the top of the assembly, the telescopic end of the first telescopic component stops at this position. The telescopic end of the second telescopic component extends, causing the scraper 403 to move downwards until it reaches the appropriate position, at which point the telescopic end of the second telescopic component stops at this length. Gas is introduced into the solder paste container through the gas pipe, forcing the solder paste into the delivery pipe and finally spraying it out from the nozzle of the multi-nozzle nozzle. The second motor drives the second lead screw to rotate, causing the second lead screw nut to slide on the second lead screw, which in turn causes the first slider to slide backward. This causes the scraper 403 to slide backward on the top of the template 404, pressing the solder paste through the opening 4041 on the template 404 onto the assembly, forming a solder paste pattern consistent with the shape of the opening 4041. The telescopic end of the second telescopic component shortens, causing the scraper 403 to rise and return to its initial position. The second motor reverses, causing the first slider to slide forward and return to its initial position. At the same time, the telescopic end of the first telescopic component shortens, causing the mounting plate 401 to move downward, causing each connecting post 4011 to slide upward in each limiting block 4013. The first return spring 4014 gradually returns to its natural extension state and causes the limiting blocks 4013 to slide upward until the mounting plate 401 returns to its initial position.

[0069] The fourth motor rotates, causing the transfer fork 502 to approach the placement platform 301. The strip plates of the transfer fork 502 are inserted into the two slots of the placement platform 301. Then, the telescopic end of the third telescopic component 504 extends, causing the transfer fork 502 to rise, so that the pre-assembled part with solder paste is raised with the transfer fork 502. The fourth motor reverses, and the transfer fork 502 moves away from the placement platform 301 and returns to the initial position. The third motor 503 rotates, causing the transfer fork 502 to rotate 90°, with the opening facing the assembly platform 2. The transfer fork 502 first approaches the assembly platform 2 and then descends. After the bottom of the pre-assembled part with solder paste touches the top of the assembly platform 2, the transfer fork 502 moves away from the assembly platform until it returns to the initial position.

[0070] The telescopic end of the sixth telescopic component 704 extends, causing the long plate 703 to descend. The seventh motor 605 starts, causing the L-shaped plate 603 to rotate, so that the openings of the clamping plate 604 and the short end of the L-shaped plate 603 face the iron shell placement platform 702. The telescopic end of the seventh telescopic component 607 extends, reducing the distance between the clamping plate 604 and the short end of the L-shaped plate 603, so that the iron shell 104 is clamped. After clamping member 6 clamps the iron shell 104, the telescopic end of the sixth telescopic member 704 rises, causing the long plate 703 to rise. The seventh motor 605 drives the L-shaped plate 603 to rotate so that the openings of the clamping plate 604 and the short end of the L-shaped plate 603 face the vertical end of the L-shaped frame 701. The second slider 601 slides on the long plate 703 towards the vertical end of the L-shaped frame 701. The iron shell 104 clamped by clamping member 6 comes into contact with the cleaning member 9. The eighth telescopic member 902 continuously extends and shortens, causing the wiping block 901 to wipe the iron shell 104. The telescopic end of the sixth telescopic component 704 rises, causing the long plate 703 to continue rising. The sixth motor starts, driving the fifth lead screw to rotate, causing the fifth lead screw nut to move towards the assembly table 2, thereby causing the clamping component 6 to move towards the assembly table 2. After moving above the mounting hole 10131, the telescopic end of the sixth telescopic component 704 extends, causing the long plate 703 to descend. The sixth motor drives the fifth lead screw to rotate, causing the clamping component 6 to move towards the connection point until the iron shell 104 is installed on the connection point. The telescopic end of the seventh telescopic component 607 shortens, increasing the distance between the clamping plate 604 and the short end of the L-shaped plate 603, no longer clamping the iron shell 104. The seventh motor 605 causes the openings of the clamping plate 604 and the short end of the L-shaped plate 603 to face the iron shell placement table 702. The telescopic end of the sixth telescopic component 704 rises, driving the long plate 703 to rise, and the clamping component 6 returns to its initial position.

[0071] Repeat the above process until all eight metal shell parts 104 are installed on FPC1013 to obtain the assembly. Move the transfer fork 502 close to the assembly table 2, extend the telescopic end of the fourth telescopic part, causing the second plate 801 to descend, and each pressing plate 804 to descend and enter the mounting holes 10131. Extend the telescopic end of the fifth telescopic part 803, causing the two irregular plates 802 to move towards each other, and each pressing plate 804 presses the metal shell parts onto FPC1013. Subsequently, the transfer fork 502 rises, causing the assembly to rise. Then, the transfer fork 502 moves away from the assembly table 2 and returns to its initial position. The transfer fork 502 rotates 90° toward the placement table 301 and moves closer to the placement table 301. The transfer fork 502 descends, and after the bottom of the assembly contacts the top of the placement table 301, the telescopic end of the fifth telescopic component 803 shortens, causing the two irregular plates 802 to move in opposite directions. Each pressing plate 804 moves away from the iron shell 104. The telescopic end of the fourth telescopic component shortens, causing the second flat plate 801 to rise. The transfer fork 502 moves away from the placement table 301 and returns to its initial position, rotating 90° toward the assembly table 2.

[0072] The assembly is placed on the placement platform 301. The first motor starts, driving the first lead screw to rotate. The first lead screw nut slides on the first lead screw, causing the placement platform 301 to slide forward. After entering the welding position in the furnace 303, the first motor stops rotating, and the placement platform 301 stays in the welding position. The furnace door is closed, and the temperature of the furnace 303 rises to heat and weld the assembly. The peak temperature is 255℃, and the reflow time is 60~70s. After welding is completed, the furnace door is opened, and the first motor starts, driving the first lead screw to rotate in the opposite direction, so that the placement platform 301 returns to the processing position and stays in this position.

[0073] It should be noted that the present invention is not limited to the specific structure shown in the accompanying drawings in the above embodiments, and various changes can be made within the scope of knowledge possessed by those skilled in the art.

Claims

1. An apparatus for automated soldering of SMT print-based iron shell parts, characterized in that, The assembly table (2) for placing the initial assembly and the reflow soldering furnace (3) for heating the soldered assembly are included; The reflow soldering furnace (3) includes a placing table (301) for placing the initial assembly or the assembly, which can slide back and forth along the length direction of the reflow soldering furnace (3); the reflow soldering furnace (3) is provided with a coating member (4) for coating the initial assembly placed on the placing table (301) with solder paste; The transfer member (5) is arranged beside the assembly table (2) and can transfer the initial assembly or the assembly placed on the assembly table (2) to the placing table (301) and transfer the initial assembly coated with solder paste placed on the placing table (301) to the assembly table (2); The assembly table (2) is also provided with a mounting member (7) for mounting the iron shell member (104) on the initial assembly coated with solder paste placed on the assembly table (2); The mounting member (7) includes an L-shaped frame (701) which can move back and forth, the L-shaped frame (701) is composed of a horizontal end and a vertical end, a iron shell member placing table (702) for placing a plurality of iron shell members (104) is arranged beside the vertical end of the L-shaped frame (701), a long plate (703) which can be lifted and lowered is mounted on the bottom of the horizontal end of the L-shaped frame (701), a clamping member (6) which can slide left and right for clamping the iron shell member (104) on the iron shell member placing table (702) is mounted on the bottom of the long plate (703); The clamping member (6) includes a second sliding block (601) which can slide on the bottom of the long plate (703), a small shelf (602) which can rotate around the vertical direction, a horizontal rotating shaft is mounted on the small shelf (602), an L-shaped plate (603) is fixedly mounted on the rotating shaft, the L-shaped plate (603) is composed of a long end and a short end, a clamping plate (604) which can move back and forth in a direction perpendicular to the short end of the L-shaped plate (603) is vertically mounted on the long end of the L-shaped plate (603).

2. The SMT printing-based automatic welding device for iron shell parts according to claim 1, characterized in that, The reflow soldering furnace (3) includes a base (302), the placing table (301) is slidingly mounted on the top of the base (302), a hearth (303) for heating the assembly placed on the placing table (301) is arranged on the front side of the top of the base (302).

3. The SMT printing-based automatic welding device for iron shell parts according to claim 1, characterized in that, The coating member (4) includes a mounting plate (401) which can be lifted and lowered, a first sliding block which can slide back and forth is mounted on the bottom of the mounting plate (401), a multi-nozzle spray head (402) for spraying solder paste and a scraper (403) which can be lifted and lowered are mounted on the first sliding block; A template (404) is arranged below the scraper (403), the template (404) is fixedly connected with the bottom of the mounting plate (401) through four connecting columns (4011); The outer side of the connecting column (4011) is fixedly sleeved with a circular ring piece (4012), the outer side of each of the four connecting columns (4011) is slidably sleeved with a limiting block (4013) for limiting four corners of the assembled component respectively, the part of the connecting column (4011) between the circular ring piece (4012) and the limiting block (4013) is sleeved with a first reset spring (4014), the top of the first reset spring (4014) is fixedly connected with the bottom of the circular ring piece (4012), and the bottom of the first reset spring (4014) is fixedly connected with the top of the limiting block (4013).

4. The SMT printing-based automatic welding device for iron shell parts according to any one of claims 1-3, characterized in that, The transfer member (5) comprises a first flat plate (501) capable of rotating around the up-down direction and capable of lifting, and the top of the first flat plate (501) is provided with a transfer fork (502) capable of reciprocating sliding along the length direction of the first flat plate (501) and used for transferring the primary assembled component or the assembled component.

5. The SMT printing based automated welding device for iron shell parts according to claim 4, characterized in that, The transfer fork (502) is in a U-shaped structure, comprising two vertical ends and a horizontal end, the vertical end of the transfer fork (502) located at the lower side is composed of two parallel strip plates, the top of the assembling table (2) and the placing table (301) are both provided with a sliding groove for the sliding of each strip plate along the length direction of the assembling table (2) or the placing table (301). The vertical end of the transfer fork (502) located at the upper side is provided with a pressing member (8) used for pressing the iron shell component.

6. The SMT printing based automated welding device for iron shell parts according to claim 5, characterized in that, The pressing member (8) comprises a second flat plate (801) capable of lifting, a special-shaped plate (802) capable of moving towards or away from each other is installed on the second flat plate (801), and the bottom of the special-shaped plate (802) is installed with a pressing plate (804) corresponding to the number and position of the iron shell component (104) installed on the assembled component.

7. The SMT printing based automated welding device for iron shell parts according to claim 1, characterized in that, The vertical end of the L-shaped frame (701) is provided with a cleaning member (9) used for cleaning the iron shell component clamped by the clamping member (6).

8. The SMT printing based automated welding device for iron shell parts according to claim 7, characterized in that, The cleaning member (9) comprises a wiping block (901) capable of extending into the iron shell component (104) and capable of reciprocating moving along the direction perpendicular to the vertical end of the L-shaped frame (701), and a horizontal eighth telescopic member (902) used for driving the wiping block (901) to reciprocating move along the direction perpendicular to the vertical end of the L-shaped frame (701) is fixedly installed on the vertical end of the L-shaped frame (701).

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