Split type coil welding structure

Abstract

The invention provides a split type coil welding structure, and relates to the technical field of inductance coil welding equipment, the split type coil welding structure comprises a mounting plate and two welding assemblies mounted on the mounting plate, and each welding assembly comprises a pre-compression mechanism and a welding mechanism. The pre-compression mechanism comprises a telescopic piece and a connecting plate, and the telescopic end of the telescopic piece is pressed on the connecting plate; the welding mechanism comprises a pair of conductive columns installed on the connecting plate and welding heads installed at the tail ends of the conductive columns. The conductive column is installed on the connecting plate through a screw, and is provided with a copper wing plate so as to increase the conductive area, reduce the resistance and improve the heat dissipation performance. The copper wing plates are perpendicular to the arrangement direction of the conductive columns, so that the compactness of the whole structure can be maintained. By the adoption of the split type welding head structure, the welding head can adapt to welding spots with different planeness, it is ensured that each welding spot can make full contact with the welding head, welding flaws are remarkably reduced, the quality of the welding spots is improved, meanwhile, conductivity and heat dissipation performance are enhanced, structural compactness is ensured, and production efficiency is improved.

Description

Technical Field

[0001] The invention relates to the technical field of induction coil welding equipment, and in particular to a split coil welding structure. Background Art

[0002] In order to achieve efficient welding of common mode inductor coil products, traditional coil winding machine welding devices usually use an integrated double welding head structure to complete the welding of two solder joints at the same time. Although this structure can simplify the operation process and improve production efficiency, it has encountered some difficult-to-overcome problems in practical applications.

[0003] As common-mode inductor products become increasingly miniaturized and precise, it is difficult to ensure that the solder joints on them are precisely on the same welding surface. When the flatness of the two solder joints on the product is not precisely flush, the integrated dual-welding head structure cannot adapt to the welding conditions and cannot ensure that the two welding heads have good contact with the solder joints at the same time, resulting in welding defects such as poor contact and insufficient solder joint strength during the welding process. These problems not only affect the overall quality of the product, but also significantly increase the defective product rate, thereby increasing production costs. Summary of the invention

[0004] The purpose of the present invention is to provide a split coil welding structure. By adopting the split welding structure, the welding head at each welding point position can be accurately controlled to ensure that the welding head can fully contact the welding points with different flatnesses, thereby improving the welding quality.

[0005] To achieve the above object, the present invention is implemented through the following technical solutions:

[0006] A split coil welding structure comprises a mounting plate and two welding assemblies mounted on the mounting plate, the two welding assemblies are separated from each other, and the welding assemblies comprise a pre-pressure mechanism mounted on the mounting plate and a welding mechanism mounted on the pre-pressure mechanism;

[0007] The pre-stress mechanism comprises a telescopic member fixed vertically downward on the mounting plate and a connecting plate vertically slidably mounted on the mounting plate, and the telescopic end of the telescopic member is pressed tightly on the connecting plate;

[0008] The welding mechanism comprises a pair of conductive posts mounted on a connection plate and a welding head mounted at the ends of the conductive posts, wherein the pair of conductive posts are conductive post 1 and conductive post 2, and the welding head is electrically connected to the conductive post 1 and conductive post 2.

[0009] By adopting a split welding structure, the two welding components can adapt to welding points with different flatnesses. The two pre-pressure mechanisms respectively drive the two separate welding heads to press on the welding points of the workpiece, thereby ensuring that each welding point can fully contact the welding head, thereby significantly reducing welding defects and improving the quality of the welding points.

[0010] Furthermore: the conductive column is installed on the connecting plate by means of screws, and a plurality of copper wing plates are provided on the conductive column, and the copper wing plates are distributed on both sides of the screws. The screw-mounted connection form facilitates the disassembly, replacement, and maintenance of the device, and reduces the difficulty of designing and manufacturing the assembly parts. However, when the present device uses a split welding structure design, the number of conductive columns increases, and the volume of the gaps between the conductive columns increases, while the volume of the conductive columns decreases, resulting in a decrease in the conductive volume at the screw installation location, which in turn causes an increase in the resistance of the conductive column at this location, and severe heat generation. The present device further proposes a solution to this secondary problem, by adding copper wing plates on both sides of the screw installation location on the conductive column, which not only increases the conductive volume and reduces the overall resistance of the conductive column, but also reduces the heat generation of the conductive column and increases heat dissipation.

[0011] Furthermore, the copper wing plate is perpendicular to the arrangement direction of the conductive pillars, so as to ensure the conductive performance of the conductive pillars and maintain the compactness of the overall structure.

[0012] Furthermore, the copper wing plates are also distributed in the intervals between the screws, so as to further reduce the volume of the conductive column and increase the heat dissipation of the conductive column.

[0013] Further: the other ends of the conductive pillars 1 and 2 on which the welding heads are mounted are respectively mounted with terminal blocks 1 and 2, the terminal blocks 1 and 2 are staggered, the cross-sectional area of ​​the terminal block 1 is larger than the cross-sectional area of ​​the conductive pillar 1, and the cross-sectional area of ​​the terminal block 2 is larger than the cross-sectional area of ​​the conductive pillar 2. The high-low staggered layout of the terminal blocks 1 and 2 can increase the contact installation area with the wire in a compact structure and reduce the resistance at the connection with the wire.

[0014] Furthermore, it also includes a heat dissipation fan installed on the conductive column, and a plurality of heat dissipation slots are opened on at least one surface of the conductive column, and the heat dissipation fan is directly facing the heat dissipation slots, so as to further dissipate the heat of the conductive column.

[0015] Furthermore: the heat dissipation fan is installed on the conductive column through a heat dissipation bracket.

[0016] Furthermore, an insulating layer is provided between the conductive column and the connecting plate to increase the electrical insulation safety of the device.

[0017] Furthermore, the insulating layer is a fluororubber pad, which has excellent insulation properties.

[0018] Further: the pre-stress mechanism also includes a contact limiter, which includes a stud 1 and a stud 2 respectively threadedly connected to the mounting plate and the connecting plate, and the head of the stud 1 and the head of the stud 2 are opposite. The head of the stud 1 and the head of the stud 2 are pressed tightly, that is, the connecting plate under the pressure of the telescopic member is limited; the limit stroke can be adjusted by rotating the stud 1 or the stud 2, which is convenient for debugging the device and accurate limit.

[0019] Furthermore, the telescopic member is a low-friction cylinder. The low-friction cylinder has small vibration and good impact resistance, and is suitable for use in precision welding scenarios.

[0020] Furthermore, a rubber top block is provided at the end of the top rod of the low-friction cylinder. The rubber top block plays a buffering role and increases the movement stability of the welding head.

[0021] Furthermore: the pre-stress mechanism also includes a buffer installed between the mounting plate and the connecting plate, the buffer includes a spring and a spring mounting pin sleeved in the spring, and the spring mounting pin is installed on the connecting plate. The elastic force of the spring is mainly used to offset the gravity of the connecting plate and its auxiliary structure, reduce the unsprung mass of the compression member, and can more effectively and flexibly control the up and down movement of the welding mechanism, reduce the impact of the welding mechanism on the common mode inductor product due to inertia during the downward movement of the entire welding structure, and protect the product quality; in addition, the spring also provides a certain buffer force to prevent hard contact between the mounting plate and the connecting plate, causing impact.

[0022] Furthermore: the connecting plate is installed on the fixing plate through a guide rail mechanism.

[0023] Furthermore, the invention also includes a blowpipe directed to the welding head, which is used to connect to the gas source to blow away the welding dust at the welding head in time.

[0024] Furthermore, a lateral limit block is installed on the conductive column, and the lateral limit block is installed on a side of the guide column perpendicular to the welding head, and the lateral limit block contacts the side of the welding head, and the profile of the side of the lateral limit block in contact with the welding head matches the profile of the side of the welding head. The lateral limit block is used to further limit the welding head laterally, which can further improve the installation accuracy of the welding head.

[0025] Compared with the prior art, the present invention has the following beneficial effects:

[0026] 1. This device adopts a split welding structure. The two welding components can adapt to welding points with different flatness. The two pre-pressure mechanisms drive the two separated welding heads to press on the welding points of the workpiece, thereby ensuring that each welding point can fully contact the welding head, thereby significantly reducing welding defects and improving the quality of welding points. It effectively avoids welding defects, significantly reduces the product defect rate caused by poor welding, and improves the overall quality of the product.

[0027] 2. Adding a copper wing plate to the conductive column not only increases the conductive area and reduces the resistance, but also improves the heat dissipation performance, so that the welding head can maintain a stable temperature during long-term work, ensuring the continuity of the welding process and the consistency of the welding quality.

[0028] 3. Although a split design is adopted, reasonable layout and optimized design, including the addition of copper wing plates and reasonable layout, and staggered terminal blocks, ensure the compactness of the welding assembly and facilitate installation and maintenance. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 It is a schematic isometric view of the device of the present invention;

[0030] Figure 2 It is a schematic diagram of a front view of the device of the present invention;

[0031] Figure 3 It is a schematic diagram of the left side view of the device of the present invention

[0032] In the figure:

[0033] 1. Mounting plate; 2. Connecting plate; 3. Low friction cylinder; 3.1. Rubber top block; 4. Conductive column; 4.1. Conductive column 1; 4.11. Terminal block 1; 4.2. Conductive column 2; 4.21. Terminal block 2; 4.3. Copper wing plate; 4.4. Heat sink; 5. Welding head; 6. Cooling fan; 7. Cooling bracket; 8. Lateral limit block; 9. Guide rail mechanism; 10. Fluororubber pad; 11. Contact limiter; 12. Buffer; 13. Blowpipe. DETAILED DESCRIPTION

[0034] The technical solution of the present invention will be described clearly and completely below in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0035] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0036] like Figure 1-Figure 3As shown: a split coil welding structure, including a mounting plate 1 and two welding assemblies mounted on the mounting plate 1, the two welding assemblies are separated from each other, and the welding assemblies include a pre-pressure mechanism mounted on the mounting plate 1 and a welding mechanism mounted on the pre-pressure mechanism;

[0037] The pre-stress mechanism includes a telescopic member fixed vertically downward on the mounting plate 1 and a connecting plate 2 slidably mounted on the mounting plate 1 by a vertical guide rail mechanism 9, and the telescopic end of the telescopic member is pressed against the connecting plate 2; the welding mechanism includes a pair of conductive columns 4 mounted on the connecting plate 2 and a welding head 5 mounted at the end of the conductive columns 4, the pair of conductive columns 4 are conductive column 1 4.1 and conductive column 2 4.2, and the welding head 5 is electrically connected to the conductive column 1 4.1 and conductive column 2 4.2. By adopting a split welding structure, the two welding assemblies can adapt to welding points of different flatnesses, and the two pre-stress mechanisms respectively drive the two separated welding heads 5 to press against the welding points of the workpiece, thereby ensuring that each welding point can fully contact the welding head 5, thereby significantly reducing welding defects and improving the quality of welding points.

[0038] The conductive column 4 is installed on the connecting plate 2 by screws, and an insulating layer is provided between the conductive column 4 and the connecting plate 2, and the insulating layer is a fluororubber pad 10. A plurality of copper wing plates 4.3 are provided on the conductive column 4, and the copper wing plates 4.3 are distributed on both sides of the screws; the copper wing plates 4.3 are perpendicular to the arrangement direction of the conductive column 4. The connection form of screw installation is convenient for the disassembly, replacement and maintenance of the device, and reduces the design and manufacturing difficulty of the assembly parts. However, under the split welding structure design used in this device, the number of conductive columns 4 increases, and the volume of the gaps between the conductive columns 4 increases, and the volume of the conductive columns 4 decreases, resulting in a decrease in the conductive volume at the screw installation location, which in turn causes the conductive column 4 to have an increased resistance at this location and serious heat generation. This device further proposes a solution to this secondary problem, by adding copper wing plates 4.3 on both sides of the screw installation location on the conductive column 4, not only the conductive volume is increased, the overall resistance of the conductive column 4 is reduced, but also the heat generation of the conductive column 4 is reduced and the heat dissipation is increased. While fully ensuring the compactness of the overall structure, the conductive performance of the conductive column 4 is guaranteed. The copper wing plates 4.3 are also distributed in the intervals between the screws. The volume of the conductive column 4 is further reduced, and the heat dissipation of the conductive column 4 is increased.

[0039] The other end of the conductive column 1 4.1 and the conductive column 2 4.2 on which the welding head 5 is installed is respectively installed with a terminal block 1 4.11 and a terminal block 2 4.21. The terminal block 1 4.11 and the terminal block are staggered. The cross-sectional area of ​​the terminal block 1 4.11 is larger than the cross-sectional area of ​​the conductive column 1 4.1, and the cross-sectional area of ​​the terminal block 2 4.21 is larger than the cross-sectional area of ​​the conductive column 2 4.2. A lateral limit block 8 is also installed on the conductive column 4. The lateral limit block 8 is installed on a side of the guide column perpendicular to the welding head 5. The lateral limit block 8 contacts the side of the welding head 5. The side surface of the lateral limit block 8 in contact with the welding head 5 matches the side surface of the welding head 5. The lateral limit block 8 is used to further limit the welding head 5 laterally, which can further improve the installation accuracy of the welding head 5.

[0040] A split coil welding structure also includes a heat dissipation fan 6 mounted on the conductive column 4 through a heat dissipation bracket 7. A plurality of heat dissipation slots 4.4 are opened on at least one surface of the conductive column 4. The heat dissipation fan 6 is directly opposite to the heat dissipation slots 4.4. It is used to further dissipate heat from the conductive column 4. A split coil welding structure also includes a blowpipe 13 at the guide welding head 5. The blowpipe 13 is used to connect to an air source to blow away welding dust at the welding head 5 in a timely manner.

[0041] The pre-stress mechanism also includes a contact limiter 11, which includes a stud 1 and a stud 2 respectively threadedly connected to the mounting plate 1 and the connecting plate 2, and the head of the stud 1 and the head of the stud 2 are opposite. The head of the stud 1 is pressed against the head of the stud 2, that is, the connecting plate 2 under the pressure of the telescopic member is limited; the limit stroke can be adjusted by rotating the stud 1 or the stud 2, which is convenient for the debugging of the device and accurate limit. In addition, both stud 1 and stud 2 are made of copper. Stud 1 and stud 2 are electrically connected to the PLC controller of the coil winding machine respectively. When the welding structure is pressed down to the welding point, the low friction cylinder 3 in the pre-stress mechanism is compressed, and at this time, stud 1 and stud 2 are disconnected. The PLC controller can receive a disconnection signal to indicate that the stroke of the welding head is in place. When the welding head strokes on the two welding assemblies are in place, it means that the downward stroke of the entire welding structure is in place, and the PLC controller can perform the next step of control.

[0042] The telescopic part is a low-friction cylinder 3. The low-friction cylinder 3 has low vibration and good impact resistance, and is suitable for precision welding scenarios. A rubber top block 3.1 is provided at the end of the top rod of the low-friction cylinder 3. The rubber top block 3.1 plays a buffering role and increases the movement stability of the welding head 5. The pre-stress mechanism also includes a buffer 12 installed between the mounting plate 1 and the connecting plate 2, and the buffer 12 includes a spring 12.2 and a spring mounting pin 12.1 sleeved in the spring 12.2, and the spring mounting pin 12.1 is installed on the connecting plate 2. The elastic force of the spring 12.2 is mainly used to offset the gravity of the connecting plate 2 and its auxiliary structures, reduce the unsprung mass of the low-friction cylinder 3, and can more effectively and flexibly control the up and down movement of the welding mechanism, reduce the impact of the welding mechanism on the common mode inductor product due to inertia during the downward movement of the entire welding structure, and protect the product quality; in addition, the spring 12.2 also provides a certain buffering force to prevent hard contact between the mounting plate 1 and the connecting plate 2, causing impact.

[0043] The working principle of the present invention comprises the following parts:

[0044] Installation and positioning: The device is installed on the welding arm of the coil winding machine through the mounting plate 1, and all the terminal blocks are connected to the wires leading to the power supply. The lateral limit block 8 on the conductive column 4 contacts the side of the welding head 5 to limit the side of the welding head 5 to improve the installation accuracy of the welding head 5.

[0045] When welding starts, the robot arm drives the device to the welding point and moves the two welding heads 5 toward the welding point respectively. Since the pre-stress mechanism is separated, the two welding heads 5 move independently within the travel range of the pre-stress mechanism. If one of the welding heads 5 contacts the welding point first, the other welding head 5 that has not yet contacted the welding point can still continue to press down until it also contacts the welding point. In the process of the two welding heads 5 being pressed down respectively, the rubber top block 3.1 provided at the end of the top rod of the telescopic part plays a buffering role, increasing the movement stability of the welding head 5. In addition, adjusting the contact limiter 11 (rotating stud one or stud two) in the pre-stress mechanism can adjust the limit stroke to ensure that the contact pressure between the welding head 5 and the welding point is moderate, and the travel freedom of the two pre-stress mechanisms can also be adjusted separately.

[0046] During the welding process, the cooling fan 6 is directly opposite to the heat dissipation slot 4.4, which is used to further dissipate the heat of the conductive column 4 to maintain a stable temperature of the welding head 5 under long-term work. The blowpipe 13 at the guide welding head 5 is used to connect the gas source to blow away the welding dust at the welding head 5 in time to keep the welding area clean. The conductive column 4 is provided with a copper wing plate 4.3, which is distributed on both sides of the screw, which not only increases the conductive area and reduces the resistance, but also improves the heat dissipation performance. The copper wing plate 4.3 is perpendicular to the arrangement direction of the conductive column 4, which ensures the conductive performance of the conductive column 4 while maintaining the compactness of the overall structure.

[0047] The above embodiments are only for illustrating the technical concept and features of the present invention, and their purpose is to enable people familiar with the technology to understand the content of the present invention and implement it accordingly, and they cannot be used to limit the protection scope of the present invention. Any equivalent transformation or modification made according to the spirit of the present invention should be included in the protection scope of the present invention.

Claims

1. A split coil welding structure, characterized in that: It includes a mounting plate and two welding assemblies mounted on the mounting plate, the two welding assemblies are separated from each other, and the welding assembly includes a pre-pressure mechanism mounted on the mounting plate and a welding mechanism mounted on the pre-pressure mechanism; The pre-stress mechanism comprises a telescopic member fixed vertically downward on the mounting plate and a connecting plate vertically slidably mounted on the mounting plate, and the telescopic end of the telescopic member is pressed tightly on the connecting plate; The welding mechanism comprises a pair of conductive posts mounted on a connection plate and a welding head mounted at the ends of the conductive posts, wherein the pair of conductive posts are conductive post 1 and conductive post 2, and the welding head is electrically connected to the conductive post 1 and conductive post 2.

2. A split coil welding structure according to claim 1, characterized in that: The conductive column is mounted on the connecting plate by means of screws. A plurality of copper wing plates are arranged on the conductive column, and the copper wing plates are distributed on both sides of the screws.

3. A split coil welding structure according to claim 2, characterized in that: The copper wing plate is perpendicular to the arrangement direction of the conductive columns.

4. The split coil welding structure according to claim 2, characterized in that: The copper wing plates are also distributed in the intervals between the screws.

5. The split coil welding structure according to claim 1, characterized in that: The other end of the conductive column 1 and the conductive column 2 on which the welding head is installed is respectively installed with the terminal block 1 and the terminal block 2, the terminal block 1 and the terminal block are staggered, the cross-sectional area of ​​the terminal block 1 is larger than the cross-sectional area of ​​the conductive column 1, and the cross-sectional area of ​​the terminal block 2 is larger than the cross-sectional area of ​​the conductive column 2.

6. The split coil welding structure according to claim 1, characterized in that: It also includes a heat dissipation fan installed on the conductive column. A plurality of heat dissipation slots are opened on at least one surface of the conductive column, and the heat dissipation fan is directly opposite to the heat dissipation slots.

7. A split coil welding structure according to claim 6, characterized in that: The heat dissipation fan is installed on the conductive column through a heat dissipation bracket.

8. The split coil welding structure according to claim 1, characterized in that: An insulating layer is provided between the conductive column and the connecting plate.

9. The split coil welding structure according to claim 8, characterized in that: The insulating layer is a fluororubber pad.

10. The split coil welding structure according to claim 1, characterized in that: The pre-stress mechanism also includes a contact stopper, which includes a stud 1 and a stud 2 which are respectively threadedly connected to the mounting plate and the connecting plate, and the head of the stud 1 and the head of the stud 2 are opposite to each other.

11. The split coil welding structure according to claim 10, characterized in that: The stud one and the stud two are both made of copper, and the stud one and the stud two are electrically connected to a PLC controller.

12. The split coil welding structure according to claim 1, characterized in that: The telescopic member is a low-friction cylinder.

13. A split coil welding structure according to claim 12, characterized in that: A rubber top block is arranged at the end of the top rod of the low-friction cylinder.

14. The split coil welding structure according to claim 1, characterized in that: The pre-stress mechanism also includes a buffer installed between the mounting plate and the connecting plate, the buffer includes a spring and a spring mounting pin sleeved in the spring, and the spring mounting pin is installed on the connecting plate.

15. The split coil welding structure according to claim 1, characterized in that: The connecting plate is mounted on the fixing plate through a guide rail mechanism.

16. The split coil welding structure according to claim 1, characterized in that: Also includes a blowpipe at the guide welding head.

17. The split coil welding structure according to claim 1, characterized in that: A lateral limit block is also installed on the conductive column. The lateral limit block is installed on a side of the guide column perpendicular to the welding head. The lateral limit block contacts the side of the welding head, and the surface of the side of the lateral limit block in contact with the welding head matches the side surface of the welding head.

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