PCB (Printed Circuit Board) wire welding machine

Abstract

The utility model discloses a wire welding machine for a PCB (Printed Circuit Board). Comprising a rack, a wire feeding and cutting mechanism arranged on the rack and used for automatically providing welding wires, and a PCB feeding mechanism arranged on the rack and used for automatically providing PCBs. The wire moving and welding mechanical arm is arranged between the wire feeding and cutting mechanism and the PCB feeding mechanism and used for grabbing a welding wire to be in butt welding with a PCB; and the first rotary clamping mechanism and the tin soldering mechanism are arranged on the wire moving and welding mechanical arm. A wire moving welding manipulator is adopted to drive a first rotary clamping mechanism to grab a welding wire, then the welding wire is moved to a PCB feeding mechanism and aligned to a welding position of a PCB, then the butt-jointed welding wire and the PCB are welded together through a tin soldering mechanism, and the direction of the welding wire is adjusted through the first rotary clamping mechanism so that the welding wire can be butt-jointed to different PCBs. Therefore, different types of PCBs can be subjected to wire bonding, and the universality and the production efficiency of equipment are greatly improved.

Description

Technical field:

[0001] The utility model relates to the technical field of circuit board welding, in particular to a PCB board wire welding machine. Background technology:

[0002] PCB board wire welding machine is an automated equipment used for welding on printed circuit boards (PCBs). It is mainly used to accurately weld electronic components to PCBs to ensure the stability and reliability of electrical connections. It consists of welding heads, automatic feeding systems, positioning systems, control systems and working platforms. The welding heads are responsible for melting the welding wire or solder by heating and welding it to the specified position; the automatic feeding system ensures the continuous supply of welding wire or solder; the positioning system accurately locates PCBs and components through optical sensors and mechanical arms; the control system coordinates the work of each part through preset programs to achieve efficient and high-precision welding operations. The working principle of the PCB board wire welding machine includes the steps of positioning and fixing the PCB board, automatic feeding, welding operation, detection and adjustment, and completing welding. Its advantages are high precision, high efficiency, good consistency and labor saving. It is widely used in consumer electronics, communication equipment, automotive electronics, medical equipment and other fields, improving production efficiency and product quality, and meeting the needs of modern electronic manufacturing industry for high-precision and high-quality welding.

[0003] For example, the automatic wire feeding, stripping and welding machine with the Chinese patent authorization announcement number CN 215034287 U includes: a wire feeding, stripping and cutting module 100, a welding wire module 200 and a moving PCB board module 300. In the patent technical solution, the wire feeding, stripping and cutting module 100 automatically conveys, strips and cuts the welding wire, and the moving PCB board module 300 automatically moves the target welding point on the carried PCB board to the welding gun mouth of the welding wire module 200, and then the welding wire module 200 welds the welding wire output by the wire feeding, stripping and cutting module 100, so as to realize welding the welding wire to the PCB board. However, since the moving PCB board module 300 is only responsible for the linear movement of the PCB board, and the wire feeding, stripping and cutting module 100 sends out the welding wire bracket for welding, this results in that the entire device can often only weld one type of PCB board, and cannot directly weld PCB boards that require welding wires in different directions. Manual direction adjustment is usually required, resulting in poor versatility and low production efficiency.

[0004] In view of this, the inventor proposes the following technical solution. Utility model content:

[0005] The utility model aims to overcome the deficiencies of the prior art and provide a PCB board wire bonding machine.

[0006] In order to solve the above technical problems, the utility model adopts the following technical solutions: the PCB board wire bonding machine includes: a frame, a wire feeding and cutting mechanism arranged on the frame and used for automatically providing welding wires, a PCB board feeding mechanism arranged on the frame and used for automatically providing PCB boards, and a wire moving welding manipulator arranged between the wire feeding and cutting mechanism and the PCB board feeding mechanism and used for grabbing welding wires and butt welding with PCB boards, the wire moving welding manipulator is provided with a first rotating clamping mechanism for clamping welding wires and capable of rotating to adjust the direction, and a soldering mechanism is provided next to the first rotating clamping mechanism and used for welding the welding wires.

[0007] Furthermore, in the above technical solution, the first rotating clamping mechanism includes a movable base plate, a chuck seat rotatably mounted on the movable base plate, a clamping jaw device arranged at the front end of the chuck seat, an inner push rod penetrating the chuck seat and used to push the clamping jaw device to open and close the clamp, a cylinder arranged at the rear end of the chuck seat and used to push the inner push rod to move, a motor arranged on the side of the chuck seat and used to drive it to rotate, and a synchronous pulley group arranged between the motor and the chuck seat, and a movable connection device that can rotate relative to each other is arranged between the inner push rod and the cylinder.

[0008] Furthermore, in the above technical solution, the soldering mechanism includes a lifting drive device, a soldering iron arranged on the lifting drive device, a tin discharge needle arranged on the lifting drive device and located next to the soldering iron, and a tin blowing tube arranged on the lifting drive device and located next to the tin discharge needle, wherein the tin discharge needle and the tin blowing tube are located on the periphery of the soldering iron.

[0009] Furthermore, in the above technical solution, a tinning device and a flux supplying device are provided beside the wire feeding and cutting mechanism, as well as a wire stripping and tinning mechanism for grabbing the welding wire, stripping and tinning.

[0010] Furthermore, in the above technical scheme, the tin dipping device includes a tin liquid furnace, a guide rail arranged beside the tin liquid furnace, a sliding seat arranged on the guide rail, a second cylinder for pushing the rod sliding seat to move along the guide rail, a first swing plate and a second swing plate hingedly mounted on the sliding seat, a scraper connected to the upper ends of the first swing plate and the second swing plate and capable of extending into the tin liquid furnace, a tin slag box arranged at one end of the tin liquid furnace and used to collect tin ash, and a first limit push rod and a second limit push rod arranged at both ends of the guide rail and capable of respectively contacting the first swing plate and the second swing plate to raise and lower the scraper.

[0011] Furthermore, in the above technical solution, the middle part of the first swing plate is hingedly installed on the sliding seat through a first pin shaft, the upper end of the first swing plate is connected to the scraper through a second pin shaft, and the lower end of the first swing plate extends between the first limit push rod and the second limit push rod, and the sliding seat can move and collide with the first limit push rod to produce swing; the middle part of the second swing plate is hingedly installed on the sliding seat through a third pin shaft, the upper end of the second swing plate is connected to the scraper through a fourth pin shaft, and the lower end of the second swing plate extends between the first limit push rod and the second limit push rod, and the sliding seat can move and collide with the second limit push rod to produce swing.

[0012] Furthermore, in the above technical solution, the flux supply device includes a flux furnace, a liquid replenishing device arranged on the side of the flux furnace and used to automatically replenish the flux, a liquid collecting tank arranged on the side of the flux furnace and used to collect the flux, and an overflow tank arranged on the top of the flux furnace and used to collect overflowed liquid, wherein the bottom of the flux furnace is connected to the liquid replenishing device, the bottom of the overflow tank is connected to the liquid collecting tank, and the overflow tank surrounds the periphery of the furnace mouth.

[0013] Furthermore, in the above technical solution, the liquid replenishing device includes a storage cup, a liquid replenishing pipe arranged between the storage cup and the flux furnace, and a controller arranged on the liquid replenishing pipe and used to adjust the flow rate, wherein the height of the storage cup is higher than the height of the flux furnace.

[0014] Furthermore, in the above technical solution, the wire stripping and tinning mechanism includes a first X-axis movable module arranged on one side of the tinning device and the flux supply device and at least one second rotary clamping mechanism arranged on the first X-axis movable module and used to grasp the welding wire, and the second rotary clamping mechanism has the same structure as the first rotary clamping mechanism.

[0015] Furthermore, in the above technical solution, the wire feeding and cutting mechanism includes a first support frame and a straightening device, a wire feeding device, a cycloidal device, and a cutting device which are sequentially installed on the first support frame and used to transfer the welding wire, wherein the cycloidal device includes a rotating shaft installed on the first support frame in a rotatable manner, a support guide tube arranged at one end of the rotating shaft and used for the welding wire to pass through, a yielding top plate arranged at the other end of the rotating shaft, a limit block arranged on the first support frame and used to limit the yielding top plate to keep the support guide tube horizontal, and an electromagnet arranged above the limit block and used to drive the yielding top plate to swing.

[0016] After adopting the above technical scheme, the utility model has the following beneficial effects compared with the prior art: in the utility model, the first rotating clamping mechanism and the soldering mechanism are arranged on the line shifting welding manipulator, and the first rotating clamping mechanism can rotate and adjust the direction after clamping the welding wire. When the wire feeding and cutting mechanism sends out the welding wire, the line shifting welding manipulator drives the first rotating clamping mechanism to grab the welding wire and move it to the top of the PCB board feeding mechanism, and aligns the welding wire to the welding position of the PCB board, and then welds the butted welding wire to the PCB board through the soldering mechanism. The direction of the welding wire is adjusted by the first rotating clamping mechanism to achieve docking to different PCB boards, thereby realizing wire welding on different types of PCB boards, greatly improving the versatility and production efficiency of the equipment. Description of the drawings:

[0017] Figure 1 It is a structural schematic diagram of the utility model;

[0018] Figure 2 It is a structural schematic diagram of the wire material feeding and cutting mechanism in the utility model;

[0019] Figure 3 It is a structural schematic diagram of the cycloid device in the utility model;

[0020] Figure 4 This is a structural schematic diagram of the in-line welding manipulator of the utility model;

[0021] Figure 5 It is a structural schematic diagram of the first rotating clamping mechanism in the utility model;

[0022] Figure 6 It is a schematic diagram of the internal connection of the first rotating clamping mechanism in the utility model;

[0023] Figure 7 It is a schematic diagram of the connection between the clamping jaw device and the inner push rod in the utility model;

[0024] Figure 8 It is a structural schematic diagram of the flux supply device in the utility model;

[0025] Fig. 9 This is a schematic diagram of the structure of the tin immersion device in the utility model. Figure 1 ;

[0026] Fig.10 This is a schematic diagram of the structure of the tin immersion device in the utility model. Figure 2 ;

[0027] Fig.11 This is a schematic diagram of the structure of the tin immersion device in the utility model. Figure 3 ;

[0028] Fig.12It is a structural schematic diagram of the flux furnace in the utility model;

[0029] Fig.13 It is a structural schematic diagram of a wire stripping and tinning mechanism in the utility model. Specific implementation method:

[0030] The utility model is further described below in conjunction with specific embodiments and drawings.

[0031] See Figures 1 to 13 As shown, a PCB board wire bonding machine includes a frame A, a wire feeding and cutting mechanism C arranged on the frame A and used for automatically providing a welding wire B, a PCB board feeding mechanism E arranged on the frame A and used for automatically providing a PCB board D, and a wire moving welding manipulator F arranged between the wire feeding and cutting mechanism C and the PCB board feeding mechanism E and used for grabbing the welding wire B and butt welding it with the PCB board D. The wire moving welding manipulator F is provided with a first rotating clamping mechanism G for clamping the welding wire B and capable of rotating to adjust the direction, and a soldering mechanism H is provided next to the first rotating clamping mechanism G and used for welding the welding wire B. The first rotating clamping mechanism G and the soldering mechanism H are arranged on the wire-shifting welding manipulator F, and the first rotating clamping mechanism G can rotate and adjust the direction after clamping the welding wire B. After the wire feeding and cutting mechanism C sends out the welding wire B, the wire-shifting welding manipulator F drives the first rotating clamping mechanism G to grab the welding wire B and move it to the top of the PCB board feeding mechanism E, and aligns the welding wire B to the welding position of the PCB board D, and then the soldering mechanism H is used to weld the docked welding wire B and the PCB board D together. The direction of the welding wire B is adjusted by the first rotating clamping mechanism G to achieve docking with different PCB boards D, thereby realizing wire welding on different types of PCB boards D, greatly improving the versatility and production efficiency of the equipment. The wire-shifting welding manipulator F is a three-axis manipulator.

[0032] The first rotating clamping mechanism G includes a movable base plate G1, a chuck seat G2 rotatably mounted on the movable base plate G1, a clamping jaw device G3 arranged at the front end of the chuck seat G2, an inner push rod G4 which passes through the chuck seat G2 and is used to push the clamping jaw device G3 to open and close the clamp, a cylinder G5 which is arranged at the rear end of the chuck seat G2 and is used to push the inner push rod G4 to move, a motor G6 which is arranged on the side of the chuck seat G2 and is used to drive the rotation thereof, and a synchronous pulley group G7 which is arranged between the motor G6 and the chuck seat G2, and a movable connection device G8 which can rotate relative to each other is arranged between the inner push rod G4 and the cylinder G5. The clamping device G3 is installed on the rotatable chuck seat G2, and the motor G6 drives the chuck seat G2 to drive the clamping device G3 to rotate through the synchronous pulley group G7, and the cylinder G5 drives the clamping device G3 to open and close the clamping through the inner push rod G4. The movable connection device G8 is used to connect the inner push rod G4 and the cylinder G5, so that the cylinder G5 will not rotate with the rotation of the chuck seat G2, thereby realizing that the clamping device G3 can automatically rotate 360° after clamping the material, and is not affected by the cylinder G5, with a wide range of applications and strong versatility. Secondly, the inner push rod G4 is used to connect the cylinder G5 and the clamping device G3 from the chuck seat G2, with a simple structure and strong standardization of parts, which is convenient for processing, production and assembly, greatly reducing enterprise costs. At the same time, the structure has low loss and long service life, does not require frequent maintenance and repair, and saves time and effort.

[0033] The movable connection device G8 includes a groove block G81 installed on the piston in the cylinder G5 and a first bearing G82 installed at the end of the inner push rod G4 and capable of being clamped in the groove block G81. The clamping jaw device G3 includes a left-finger clamping jaw G31 and a right-finger clamping jaw G32 arranged at the front end of the chuck seat G2, and a clamping line positioning plate G33 arranged at the end of the chuck seat G2 and located between the left-finger clamping jaw G31 and the right-finger clamping jaw G32. The left-finger clamping jaw G31 and the right-finger clamping jaw G32 are driven by the inner push rod G4 to simultaneously fit with both sides of the clamping line positioning plate G33 to clamp one or two welding wires B. The left finger clamp G31 is connected to the inner push rod G4 through a first hinge rod G34, the middle part of which is hinged to the chuck seat G2, and the left finger clamp G31 and the inner push rod G4 are respectively installed at the two ends of the first hinge rod G34; the right finger clamp G32 is connected to the inner push rod G4 through a second hinge rod G35, the middle part of which is hinged to the chuck seat G2, and the right finger clamp G32 and the inner push rod G4 are respectively installed at the two ends of the first hinge rod G34. The first hinge rod G34 and the second hinge rod G35 are both L-shaped, and their parts are respectively hinged and fixed in the chuck seat G2 through the first pin G36 and the second pin G37, and the ends of the first hinge rod G34 and the second hinge rod G35 are hinged to the inner push rod G4 in an up-and-down staggered shape through the third pin G38.

[0034] The cross section of the inner push rod G4 is T-shaped, and the front end of the inner push rod G4 is provided with a positioning notch G41 for the first hinge rod G34 and the second hinge rod G35 to be inserted alternately and for the third pin G38 to pass through. The inner push rod G4 is provided with at least two sliding sleeves G42 on the sliding rod inside the chuck seat G2, and the rear end of the inner push rod G4 is connected to the movable connection device G8 through a flange G43. The chuck seat G2 is also provided with a nut cap G21 for adjusting the limit position, and the movable bottom plate G1 is provided with a first vertical plate G11 and a second vertical plate G12 for supporting the chuck seat G2, and a limit plate G13 for cooperating with the nut cap G21 to limit the position is provided on the side of the first vertical plate G11. The nut cap G21 is connected to the chuck seat G2, and the nut cap G21 is limited by the first vertical plate G11 and the limit plate G13. The extension distance of the chuck seat G2 can be adjusted by using the nut cap G21 at different positions of the chuck seat G2. The motor G6 is installed on the second vertical plate G12, and a third vertical plate G14 for supporting the cylinder G5 is also arranged behind the second vertical plate G12; the first vertical plate G11 and the second vertical plate G12 are respectively provided with a second bearing G15 and a third bearing G16 for supporting the chuck seat G2. The movable bottom plate G1 is also provided with a sensor G9 for detecting the number of rotations of the chuck seat G2, and the sensor G9 is located between the first vertical plate G11 and the second vertical plate G12, and the chuck seat G2 is provided with a sensing sheet G91 matching the sensor G9.

[0035] When the first rotary clamping mechanism G is working, the cylinder G5 drives the inner push rod G4 to move forward. Under the push of the inner push rod G4, the left-finger clamp G31 and the right-finger clamp G32 in the clamping device G3 swing to both sides and separate from the wire positioning plate G33, forming two left and right clamping spaces; further, when the welding wire B is located in the two clamping spaces, the cylinder G5 drives the inner push rod G4 to retreat. Under the push of the inner push rod G4, the left-finger clamp G31 and the right-finger clamp G32 in the clamping device G3 swing to the wire positioning plate G33 to fit together, so as to achieve the welding wire B. Clamping; further, when it is necessary to rotate and adjust the angle of the clamping jaw device G3, the motor G6 drives the chuck seat G2 to rotate through the synchronous pulley group G7. When the chuck seat G2 rotates, the clamping jaw device G3 swings to adjust the angle direction, and the inner push rod G4 also rotates with the chuck seat G2. At this time, due to the existence of the movable connection device G8, the first bearing G82 will rotate with the inner push rod G4 in the groove block G81, and will not drive the cylinder G5 to rotate, thereby ensuring that the clamping jaw device G3 can rotate 360° freely without being affected by the cylinder G5.

[0036] The soldering mechanism H includes a lifting drive device H1, a soldering iron H2 arranged on the lifting drive device H1, a tin-discharging needle H3 arranged on the lifting drive device H1 and located beside the soldering iron H2, and a tin-blowing tube H4 arranged on the lifting drive device H1 and located beside the tin-discharging needle H3, wherein the tin-discharging needle H3 and the tin-blowing tube H4 are located on the periphery of the soldering iron H2, and the lifting drive device H1 is a combination of a cylinder and a slide rail. In this embodiment, the first rotating clamping mechanism G can clamp two solder wires B at the same time, so two sets of tin-discharging needles H3 and tin-blowing tubes H4 are correspondingly arranged.

[0037] A tinning device I and a flux supply device J are arranged beside the wire feeding and cutting mechanism C, as well as a wire stripping and tinning mechanism K for grabbing the welding wire B for stripping and tinning. The wire stripping and tinning mechanism K includes a first X-axis moving module K1 arranged on one side of the tinning device I and the flux supply device J and at least one set of second rotating clamping mechanisms K2 arranged on the first X-axis moving module K1 and used for grabbing the welding wire B. The second rotating clamping mechanism K2 has the same structure as the first rotating clamping mechanism G.

[0038] The tinning device I comprises a tin liquid furnace ID, a guide rail I1 arranged beside the tin liquid furnace ID, a sliding seat I2 arranged on the guide rail I1, a second cylinder I3 for pushing the rod sliding seat I2 to move along the guide rail I1, a first swing plate I4 and a second swing plate I5 hingedly mounted on the sliding seat I2, a scraper I6 connected to the upper ends of the first swing plate I4 and the second swing plate I5 and capable of extending into the tin liquid furnace T10, a tin slag box IE arranged at one end of the tin liquid furnace ID and used for collecting tin ash, and a first limit push rod I8 and a second limit push rod I9 arranged at both ends of the guide rail I1 and capable of contacting the first swing plate I4 and the second swing plate I5 respectively to raise and lower the scraper I6. A heating rod and a thermocouple are also arranged at the bottom of the tin liquid furnace ID, and a circle of heat insulation cotton is wrapped around the tin liquid furnace ID. The second cylinder I3 is used to push the sliding seat I2 to drive the scraper I6 to move along the guide rail I1, and the first limit push rod I8 and the second limit push rod I9 are set at both ends of the guide rail I1 to push the first swing plate I4 and the second swing plate I5 to swing so that the scraper I6 can be lifted and lowered. As a result, in the process of reciprocating motion of the sliding seat I2 along the guide rail I1, the scraper I6 will produce a cyclic motion of high-position translation, descending motion, low-position translation, and lifting motion, thereby realizing the horizontal scraping of tin ash by the scraper I6.

[0039] The tin slag box IE and the guide rail I1 are respectively located on two sides perpendicular to the tin liquid furnace ID, and the scraper I6 moves along the guide rail I1 with the sliding seat I2. In the process, it will be lifted up at the end where the tin liquid furnace ID and the tin slag box IE are connected, driven by the first swing plate I4 and the second swing plate I5, and move to the other end above the tin liquid furnace ID with the sliding seat I2, and then descend into the tin liquid furnace ID and insert into the upper surface layer of the tin liquid, and then move back to the tin slag box IE with the sliding seat I2 to scrape off the oxidized tin ash on the surface, and as it is lifted at one end of the tin slag box IE, the ash is gradually pushed into the tin slag box IE, thereby completing the scraping of the tin ash. Among them, the scraper I6 is L-shaped, with one side fixed on the sliding seat I2 and the other side extending to the top of the tin liquid furnace ID, and the end is provided with a bending portion I61 that can extend into the tin liquid furnace ID, and the width of the bending portion I61 is equal to the furnace mouth width of the tin liquid furnace ID; the first bevel ID1 and the second bevel ID2 are provided on both sides of the furnace wall at the end where the tin liquid furnace ID is connected to the tin slag box IE, and the first bevel ID1 located on the side of the inner wall of the tin liquid furnace ID is used to prevent the bending portion I62 from colliding with the furnace wall when the scraper I6 is lifted, and can facilitate the scraping of tin ash out of the tin liquid furnace ID, and the second bevel ID2 located on the side of the outer wall of the tin liquid furnace ID is used to facilitate the introduction of tin ash into the tin slag box IE, and the width of the second bevel ID2 is greater than the first bevel ID1.

[0040] The middle part of the first swing plate I4 is hingedly mounted on the sliding seat I2 through the first pin shaft I41, the upper end of the first swing plate I4 is connected to the scraper I6 through the second pin shaft I42, and the lower end of the first swing plate I4 extends between the first limit push rod I8 and the second limit push rod I9, and the sliding seat I2 can move and collide with the first limit push rod I8 to produce swing; the middle part of the second swing plate I5 is hingedly mounted on the sliding seat I2 through the third pin shaft I51, the upper end of the second swing plate I5 is connected to the scraper I6 through the fourth pin shaft I52, and the lower end of the second swing plate I5 extends between the first limit push rod I8 and the second limit push rod I9, and the sliding seat I2 can move and collide with the second limit push rod I9 to produce swing. The lower end of the second swing plate I5 is lower than the lower end of the first swing plate I4, and the lower end of the second swing plate I5 is mounted on a bearing I54 for contacting and colliding with the second limit push rod I9 through a fifth pin shaft I53. The bearing I54 is provided with at least two, and washers I55 are provided on both sides for limiting. By providing a bearing I54 at the bottom of the second swing plate I5 and utilizing the bearing I54 to contact and collide with the second limit push rod I9, not only can it avoid being stuck during collision, but also the bearing I54 has a higher strength, which can improve the overall service life.

[0041] A balancing force spring I7 connecting the scraper I6 and the sliding seat I2 is provided between the first swing plate I4 and the second swing plate I5. The lower end of the balancing force spring I7 is mounted on the sliding seat I2 via a sixth pin shaft I71, and the other end of the balancing force spring I7 is mounted on the scraper I6 via a connecting rod I72, and a notch I61 is provided on the scraper I6 for the end of the balancing force spring I7 to pass through, and the connecting rod I72 passes through the end of the balancing force spring I7 and is clamped on the scraper I6. A balancing force spring I7 is provided between the connecting scraper plate I6 and the sliding seat I2. The balancing force spring I7 can ensure that the first swing plate I4 and the second swing plate I5 can maintain static stability in both swinging positions, that is, when the first swing plate I4 and the second swing plate I5 are in an inclined state, the scraper plate I6 is at a low position. At this time, the reset tension generated by the balancing force spring I7 makes the first swing plate I4 and the second swing plate I5 have a tendency to swing downward, thereby preventing the scraper plate I2 from being lifted up when it moves horizontally at a low position; and when the first swing plate I4 and the second swing plate I5 are in a vertical state, the scraper plate I6 is in a high position. At this time, the reset tension generated by the balancing force spring I7 keeps the first swing plate I4 and the second swing plate I5 in a vertical state, thereby preventing the scraper plate I2 from being forced to drop when it moves horizontally at a high position.

[0042] Both ends of the first pin shaft I41, the third pin shaft I51 and the sixth pin shaft I71 are limited and fixed by the retaining spring IA, and the first limit block I21 and the second limit block I22 for limiting the first swing plate I4 and the second swing plate I5 are respectively provided on both sides of the sliding seat I2. The sliding seat I2 is a U-shaped sheet metal, the first swing plate I4 and the second swing plate I5 are both installed in the U-shaped groove, and the first limit block I21 and the second limit block I22 are bent at both ends of the U-shaped groove by stamping. A connecting block I31 is provided on the second limit block I22 to be fixed with the piston of the second cylinder I3. The connecting block I31 is T-shaped, and a T-slot for locking with the connecting block I31 is provided on the second limit block I22, and a mounting hole for fixing with the piston of the second cylinder I3 is provided at the end of the connecting block I31. The first limiting push rod I8 and the second limiting push rod I9 are both bolt groups, and the two ends of the guide rail I1 are respectively provided with a first support seat I11 and a second support seat I12 for installing the first limiting push rod I8 and the second limiting push rod I9, and the bolt group includes a bolt rod IB for passing through the first support seat I11 or the second support seat I12 and a nut IC installed on the bolt rod IB and capable of adjusting the extension length.

[0043] When the tinning device I is working, the solder is located in the tin liquid furnace ID, and the tin liquid furnace ID is kept heated by the heating rod to keep the solder in the tin liquid furnace ID in a molten state at all times. When the solder on the surface of the tin liquid furnace ID is oxidized, the second cylinder I3 pushes the sliding seat I2 to move along the guide rail I1. When the sliding seat I2 moves close to the first limit push rod I8, the first limit push rod I8 collides with the first swing plate I4, causing the first swing plate I4 to swing and drive the scraper I6 to descend, while pulling the second swing plate I5 to swing as well. In this process, the scraper I6 moves from a high position to a low position, that is, it descends from the top of the tin liquid furnace ID to insert the bent portion I62 into the tin liquid; further, the second cylinder I3 pulls the sliding seat I2 back along the guide rail I1. In this process, During the process, the scraper I6 maintains horizontal movement, so that the bent portion I61 slides along the upper surface of the tin liquid furnace ID, and the oxide layer on the surface of the tin liquid is scraped toward one end; further, when the sliding seat I2 approaches the second limit push rod I9, the second limit push rod I9 collides with the second swing plate I5, causing the second swing plate I5 to swing and drive the scraper I6 to lift, while pulling the first swing plate I4 to swing as well. In this process, the scraper I6 moves from a low position to a high position, that is, it is lifted from the tin liquid furnace ID to the top, and the tin ash is scraped out of the tin liquid furnace ID and falls into the tin slag box IE, thus completing a scraping action. According to needs, the second cylinder I3 is controlled to regularly push the sliding seat I2 to perform a reciprocating movement to realize the surface scraping of tin ash on the tin liquid furnace ID.

[0044] The flux supply device J comprises a flux furnace J1, a liquid replenishing device J2 arranged beside the flux furnace J1 and used for automatically replenishing the flux, a liquid collecting tank J3 arranged beside the flux furnace J1 and used for collecting the flux, and an overflow tank J4 arranged on the top of the flux furnace J1 and used for collecting the overflowed liquid, wherein the bottom of the flux furnace J1 is connected with the liquid replenishing device J2, the bottom of the overflow tank J4 is connected with the liquid collecting tank J3, and the overflow tank J4 surrounds the periphery of the furnace mouth. The liquid replenishing device J2 is used to continuously replenish the flux into the flux furnace J1, and the liquid collecting tank J3 collects the flux overflowing from the overflow tank J3 of the flux furnace J1, so that the liquid level height of the flux furnace J1 is always kept consistent, ensuring that the parts can be completely coated with the flux every time, and the flux will not be incompletely coated due to the consumption of the flux, thereby greatly improving the flux supply effect. Secondly, the replenishing position of the liquid replenishing device J2 is set at the bottom of the flux furnace J1, so that the flux is replenished into the flux furnace J1 in an influx manner, and the overflow tank J4 set on the top periphery of the flux furnace J1 is used to collect the flux. This not only prevents the flux from overflowing to other places, but also ensures that the flux is in a flowing state to avoid the flux solidification.

[0045] The refilling device J2 includes a storage cup J21, a refilling pipe J22 disposed between the storage cup J21 and the flux furnace J1, and a controller J23 disposed on the refilling pipe J22 and used to adjust the flow rate, wherein the height of the storage cup J21 is higher than the height of the flux furnace J1. The storage cup J21 of the refilling device J2 is disposed higher than the flux furnace J1, so that the flux can naturally flow into the flux furnace J1 along the refilling pipe J22 due to the gravitational potential energy, thereby eliminating the need to replenish the flux through a power device; and by arranging the controller J23 on the refilling pipe J22, the controller J23 adjusts the speed of the refilling pipe J22 supplying the flux into the flux furnace J1 according to the different automated processing speeds, which can not only ensure that the supply of the flux is not wasted, but also adapt to different welding requirements, greatly improving the versatility.

[0046] The controller J23 includes an adjustment seat J231 slidably mounted on the infusion pipe J22 and a dial wheel J232 mounted on the adjustment seat J231 and capable of squeezing or loosening the infusion pipe J22 by toggling, and the dial wheel J232 controls the flow of the liquid by squeezing and loosening the infusion pipe J22. In this embodiment, the working principle of the controller J23 is the same as that of the controller on the hospital infusion tube, with a simple structure and low cost.

[0047] A vertical pole J5 for supporting a storage cup J21 is provided on the side of the flux furnace J1, and the storage cup J21 is mounted on the vertical pole J5 through a clamp J51. A drainage hole J41 is provided at one end of the overflow tank J4, and a drainage pipe J42 is provided between the drainage hole J41 and the liquid collecting tank J3 to connect. The drainage hole J41 and the replenishment hole J20 of the replenishment pipe J22 are respectively located at two diagonal corners of the flux furnace J1, and the replenishment hole J20 is located at the bottom of the flux furnace J1, and the drainage hole J41 is located at the top of the flux furnace J1. The two sides of the flux furnace J1 are fixedly supported by the first mounting plate J11 and the second mounting plate J12, respectively, wherein the top of the second mounting plate J12 is bent and provided with a baffle J121 covering the drainage hole J41. A blocking piece J121 is provided on the second mounting plate J12 to be folded and cover the drain hole J41 to prevent impurities from entering the drain hole J41 and causing the drain hole J41 to be blocked.

[0048] When the flux supply device J is working, the flux is added to the storage cup J21 of the liquid replenishing device J2, and the flux flows into the flux furnace J1 along the liquid replenishing pipe J22. When the flux in the flux furnace J1 is filled, it will overflow from the top furnace mouth, and the flux will be collected through the overflow tank J4 on the top of the flux furnace J1, and then flow from the drainage hole J41 through the drainage pipe J42 into the collecting tank J3 for storage, thereby realizing automatic replenishment of the flux and ensuring that the liquid level on the flux furnace J1 remains unchanged. Of course, when a sufficient amount of flux is stored in the collecting tank 3, the flux in the collecting tank J3 can be poured into the storage cup J21 to realize the recycling of the flux and reduce the waste of flux.

[0049] The wire feeding and cutting mechanism C includes a first support frame C1 and a straightening device C2, a wire feeding device C3, a cycloidal device C4, and a cutting device C5 which are sequentially installed on the first support frame C1 and used to transfer the welding wire B, wherein the cycloidal device C4 includes a rotating shaft C41 installed on the first support frame C1 in a rotatable manner, a supporting guide tube C42 arranged at one end of the rotating shaft C41 and used for the welding wire B to pass through, a yielding top plate C42 arranged at the other end of the rotating shaft C41, a limiting block C43 arranged on the first support frame C1 and used to limit the yielding top plate C42 to keep the supporting guide tube C42 horizontal, and an electromagnet C44 arranged above the limiting block C43 and used to drive the yielding top plate C42 to swing.

[0050] In summary, when the utility model is working, the wire feeding and cutting mechanism C automatically feeds the welding wire B, and cuts the welding wire B as needed. Specifically, the welding wire B is pulled by the wire feeding device C3 and flattened by the straightening device C2, and then passes through the cycloid device C4 to reach the cutter device C5, and the end of the welding wire B is first peeled. After the end of the welding wire B is sent out of the cutter device C5 for a short section, the cutter device C5 cuts the outer skin of the welding wire B, and uses the V-groove cutter to cut at different depths to The outer skin of welding wire B is cut off and the outer skin is peeled off when the wire feeding device C3 drives the welding wire B to retreat. Then the wire feeding device C3 continues to feed the wire forward. After the specified length is fed out, the wire stripping and tinning mechanism K cooperates to clamp the welding wire B, and the welding wire B is cut off by the cutting knife device C5. Then the cycloidal device C4 swings to lift the end of the rear half of the welding wire B and displace it from the front half of the welding wire B. At this time, the wire stripping and tinning mechanism K moves the welding wire B backward, so that the welding wire B A small section of the rear end of the welding wire B is returned to the cutting device C5. Since the cycloidal device C4 has offset the rear half of the welding wire B, the two sections of the welding wire B will not interfere with each other. Then the cutting device C5 cuts the outer skin of the welding wire B, and peels off the outer skin when the wire stripping and tinning mechanism K pulls the welding wire B forward; further, the wire stripping and tinning mechanism K swings the two ends of the welding wire B in sequence and supplies them to the flux supply device J and the tinning device I for dipping in flux and tinning; further, the wire shifting welding robot F drives the first rotating clamping mechanism G to move to the top of the wire stripping and tinning mechanism K to take over the welding wire B, and then moves the welding wire B to the top of the PCB board feeding mechanism E. When the PCB board feeding mechanism E moves the PCB board D to the bottom of the wire shifting welding robot F, the wire shifting welding robot F docks the welding wire B with the PCB board D, and fixes the welding wire B with the PCB board D by soldering through the soldering mechanism H, thereby realizing the wire welding process of the PCB board D. In this embodiment, it can be seen from the accompanying drawings that two welding wires B are fed out simultaneously, that is, other mechanisms of the present application also adopt the action of grabbing two welding wires B at the same time.

[0051] Of course, the above description is only a specific embodiment of the present invention and is not intended to limit the scope of implementation of the present invention. Any equivalent changes or modifications made according to the structure, characteristics and principles described in the patent application scope of the present invention should be included in the patent application scope of the present invention.

Claims

1. A PCB board wire bonding machine, comprising a frame (A), a wire feeding and cutting mechanism (C) arranged on the frame (A) and used to automatically provide a welding wire (B), a PCB board feeding mechanism (E) arranged on the frame (A) and used to automatically provide a PCB board (D), and a wire transfer welding manipulator (F) arranged between the wire feeding and cutting mechanism (C) and the PCB board feeding mechanism (E) and used to grab the welding wire (B) and butt weld it with the PCB board (D), characterized in that: The wire-shifting welding robot (F) is provided with a first rotating clamping mechanism (G) for clamping the welding wire (B) and capable of rotating to adjust the direction, and a soldering mechanism (H) is provided next to the first rotating clamping mechanism (G) and is used to solder the welding wire (B).

2. The PCB board wire bonding machine according to claim 1, characterized in that: The first rotating clamping mechanism (G) comprises a movable base plate (G1), a chuck seat (G2) rotatably mounted on the movable base plate (G1), a clamping jaw device (G3) arranged at the front end of the chuck seat (G2), an inner push rod (G4) penetrating the chuck seat (G2) and used to push the clamping jaw device (G3) to open and close the clamp, a cylinder (G5) arranged at the rear end of the chuck seat (G2) and used to push the inner push rod (G4) to move, a motor (G6) arranged on the side of the chuck seat (G2) and used to drive the rotation thereof, and a synchronous pulley group (G7) arranged between the motor (G6) and the chuck seat (G2); a movable connection device (G8) capable of relative rotation is arranged between the inner push rod (G4) and the cylinder (G5).

3. The PCB board wire bonding machine according to claim 1, characterized in that: The soldering mechanism (H) comprises a lifting drive device (H1), a soldering iron (H2) arranged on the lifting drive device (H1), a tin-discharging needle (H3) arranged on the lifting drive device (H1) and located beside the soldering iron (H2), and a tin-blowing tube (H4) arranged on the lifting drive device (H1) and located beside the tin-discharging needle (H3), wherein the tin-discharging needle (H3) and the tin-blowing tube (H4) are located on the periphery of the soldering iron (H2).

4. The PCB board wire bonding machine according to any one of claims 1 to 3, characterized in that: A tinning device (I) and a flux supply device (J) are arranged on the side of the wire feeding and cutting mechanism (C), as well as a wire stripping and tinning mechanism (K) for grabbing the welding wire (B) and stripping and tinning.

5. The PCB board wire bonding machine according to claim 4, characterized in that: The tinning device (I) comprises a tin liquid furnace (ID), a guide rail (I1) arranged beside the tin liquid furnace (ID), a sliding seat (I2) arranged on the guide rail (I1), a second cylinder (I3) used to push the rod sliding seat (I2) to move along the guide rail (I1), a first swing plate (I4) and a second swing plate (I5) hingedly mounted on the sliding seat (I2), a scraper (I6) connected to the upper ends of the first swing plate (I4) and the second swing plate (I5) and capable of extending into the tin liquid furnace (T10), a tin slag box (IE) arranged at one end of the tin liquid furnace (ID) and used for collecting tin ash, and a first limit push rod (I8) and a second limit push rod (I9) arranged at both ends of the guide rail (I1) and capable of respectively contacting the first swing plate (I4) and the second swing plate (I5) to make the scraper (I6) rise and fall.

6. The PCB board wire bonding machine according to claim 5, characterized in that: The middle part of the first swing plate (I4) is hingedly mounted on the sliding seat (I2) via a first pin shaft (I41), and the upper end of the first swing plate (I4) is connected to the scraper (I6) via a second pin shaft (I42); the middle part of the second swing plate (I5) is hingedly mounted on the sliding seat (I2) via a third pin shaft (I51), and the upper end of the second swing plate (I5) is connected to the scraper (I6) via a fourth pin shaft (I52).

7. The PCB board wire bonding machine according to claim 4, characterized in that: The flux supply device (J) comprises a flux furnace (J1), a liquid replenishing device (J2) arranged beside the flux furnace (J1) and used for automatically replenishing the flux, a liquid collecting tank (J3) arranged beside the flux furnace (J1) and used for collecting the flux, and an overflow tank (J4) arranged on the top of the flux furnace (J1) and used for collecting overflowed liquid, wherein the bottom of the flux furnace (J1) is connected to the liquid replenishing device (J2), the bottom of the overflow tank (J4) is connected to the liquid collecting tank (J3), and the overflow tank (J4) surrounds the periphery of the furnace opening.

8. The PCB board wire bonding machine according to claim 7, characterized in that: The liquid replenishing device (J2) comprises a storage cup (J21), a liquid replenishing pipe (J22) arranged between the storage cup (J21) and the flux furnace (J1), and a controller (J23) arranged on the liquid replenishing pipe (J22) and used for adjusting the flow rate, wherein the height of the storage cup (J21) is higher than the height of the flux furnace (J1).

9. The PCB board wire bonding machine according to claim 4, characterized in that: The wire stripping and tinning mechanism (K) comprises a first X-axis movable module (K1) arranged on one side of the tinning device (I) and the flux supply device (J) and at least one second rotating clamping mechanism (K2) arranged on the first X-axis movable module (K1) and used for grabbing the welding wire (B), and the second rotating clamping mechanism (K2) has the same structure as the first rotating clamping mechanism (G).

10. The PCB board wire bonding machine according to claim 9, characterized in that: The wire feeding and cutting mechanism (C) comprises a first support frame (C1) and a straightening device (C2), a wire feeding device (C3), a cycloidal device (C4), and a cutting device (C5) which are sequentially installed on the first support frame (C1) and used for transferring the welding wire (B).

Images