Welding device and RFID chip assembling equipment

Abstract

The utility model discloses a welding device and RFID chip assembling equipment. The welding device comprises a carrier and a welding assembly. A first bearing part and a second bearing part which are adjacent to each other are arranged on the carrier; the welding assembly comprises a power supply, a welding driving device and a welding head; an electrode is arranged on the welding head; the power source is communicated with the electrode, the output end of the welding driving device is connected with the welding head, the welding head is provided with a first position and a second position, when the welding head is located at the first position, the electrode and the first bearing part are in a separated state, and when the welding head is located at the second position, the electrode and a workpiece on the first bearing part are in an abutting state. According to the welding device, the welding point of the PCB and the copper wire can be welded together, the problem that welding flux is melted and splashes everywhere during welding is effectively prevented, and the product appearance and the welding quality are improved.

Description

Technical Field

[0001] This utility model belongs to the field of RFID chip assembly technology, specifically relating to a welding device and RFID chip assembly equipment. Background Technology

[0002] RFID chips, or RFID tag chips, are an important component of RFID (Radio Frequency Identification) systems. The structure of an RFID chip includes a housing and a coil and PCB board housed within the housing. The coil and PCB board are connected by soldering. Soldering the coil and PCB board is typically done manually, specifically by soldering the coil to the PCB board. However, because the solder melts and splatters during soldering, solder can adhere to the surfaces of the coil and PCB board, affecting the product's appearance and the quality of the soldering. Utility Model Content

[0003] The purpose of this invention is to provide a welding device that can automatically weld PCB boards and coils in RFID chips.

[0004] The following technical solutions are used to achieve the above objectives.

[0005] This utility model provides a welding device, which includes a carrier and a welding assembly;

[0006] The vehicle is provided with a first load-bearing part and a second load-bearing part arranged adjacent to each other;

[0007] The welding assembly includes a power supply, a welding drive device, and a welding head; the welding head is provided with an electrode; the power supply is connected to the electrode, the output end of the welding drive device is connected to the welding head, the welding head has a first position and a second position, when the welding head is in the first position, the electrode is separated from the first support part, and when the welding head is in the second position, the electrode is pressed against the workpiece on the first support part.

[0008] In some embodiments, the electrode has a partition slit along its own axial direction, so that the electrode is isolated on both sides of the partition slit to form an independent first electrode and a second electrode. The power supply has a positive terminal and a negative terminal, the first electrode is connected to the positive terminal of the power supply, and the second electrode is connected to the negative terminal of the power supply.

[0009] In some embodiments, the electrode has a first side and a second side, and the first side and the second side of the electrode near its own end are inclined toward the central axis of the electrode so that the end of the electrode has a tapered structure.

[0010] In some embodiments, the carrier includes a first carrier and a second carrier, the first carrier having a first bearing portion; the second carrier having a second bearing portion and a through hole, the second carrier being detachably mounted on the first carrier; when the second carrier is mounted on the first carrier, the first bearing portion of the first carrier passes through the through hole.

[0011] In some embodiments, the second carrier has two end posts protruding from the second carrier at one edge near the through hole, and the through hole is located between the end posts and the second bearing portion; and / or,

[0012] The first supporting part is a vertical rod; and / or,

[0013] The second carrier has a receiving groove, and the second bearing part is elastically disposed in the receiving groove. The side wall of the second bearing part is movably engaged with the groove wall of the receiving groove. When the second bearing part is in the normal state, the part exposed on the second carrier is the winding part, which is a cylinder.

[0014] In some embodiments, the welding assembly further includes a welding frame and a first clamping arm and a second clamping arm disposed on the welding frame; the output end of the welding drive device is connected to the welding frame and drives the welding frame to move closer to or away from the second support part, and the first clamping arm and the second clamping arm together clamp the welding head.

[0015] In some embodiments, the second clamping arm is movably connected to the welding frame; the welding assembly further includes an adjustment mechanism connected to the second clamping arm, the adjustment mechanism adjusting the position of the second clamping arm to adjust the clamping distance between the second clamping arm and the first clamping arm.

[0016] In some embodiments, the adjustment mechanism includes a guide, a slider, and an adjustment screw; the guide is disposed on the welding frame along the moving direction of the second clamping arm, the second clamping arm is slidably disposed on the guide via the slider, and the adjustment screw is rotatably disposed on the welding frame, and the adjustment screw is threadedly connected to the slider.

[0017] In some embodiments, the welding apparatus further includes a clamping assembly; the clamping assembly includes a clamping drive device and a clamping member, the output end of the clamping drive device is connected to the clamping member, the clamping member has a third position and a fourth position, the clamping member clamps the workpiece on the first support portion when it is in the third position, and releases the workpiece on the first support portion when it is in the fourth position.

[0018] In some embodiments, the end of the clamping member is tapered.

[0019] In some embodiments, the first bearing portion is disposed near the edge of the carrier, the welding assembly is disposed above the carrier corresponding to the first bearing portion, the clamping assembly is disposed on the side of the carrier near the first bearing portion, and the clamping drive device drives the clamping member to extend laterally from one side of the carrier into the first bearing portion.

[0020] This invention also provides an RFID chip assembly device, including a rotating workstation and a welding device as described above, wherein the carrier is disposed on the workstation.

[0021] The technical solution provided by this utility model has the following advantages and effects:

[0022] This welding device, by setting adjacent first and second support parts on the carrier, allows the two copper wires of the coil to be precisely mounted on the two solder points of the PCB when the coil and PCB are respectively supported by the two support parts. The welding assembly outputs a stable DC welding current to the electrodes through the power supply, and the resistance heat generated at the electrode pressing point welds the solder point of the PCB and the copper wire together to complete the welding operation. Compared with the existing tin soldering method, the use of solder can be eliminated, thereby effectively preventing the problem of solder melting and splashing everywhere during welding, improving the product appearance and welding quality. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the overall structure of the welding device according to an embodiment of the present utility model;

[0024] Figure 2 yes Figure 1 A partial structural diagram of the welding device;

[0025] Figure 3 This is a schematic diagram of the welding assembly according to an embodiment of the present invention;

[0026] Figure 4 This is a schematic diagram of the assembly structure of the welding frame, welding head, and adjustment mechanism according to an embodiment of the present utility model;

[0027] Figure 5 yes Figure 4 A magnified structural diagram at point E;

[0028] Figure 6 yes Figure 4 An exploded view of the welding frame, welding head, and adjustment mechanism;

[0029] Figure 7This is a schematic diagram of the first carrier and the second carrier in an assembled state according to an embodiment of the present invention;

[0030] Figure 8 This is a schematic diagram of the structure of the first carrier and the second carrier in a separated state according to an embodiment of the present invention;

[0031] Figure 9 This is a schematic diagram of the circuit connection between the electrodes and the power supply.

[0032] Explanation of reference numerals in the attached figures:

[0033] E10, Welding equipment;

[0034] E1, Welding assembly; E11, Welding drive device; E111, First welding drive element; E112, Second welding drive element; E12, Welding head; E121, Electrode; E1211, First electrode; E1212, Second electrode; E122, Separation seam; E13, Welding frame; E14, First clamping arm; E15, Second clamping arm; E16, Adjustment mechanism; E161, Guide; E162, Slider; E163, Adjusting screw; E2, Clamping assembly; E21, Clamping drive device; E22, Clamping element; E3, Power supply;

[0035] D10, Vehicle;

[0036] D1, First carrier; D11, First bearing part; D2, Second carrier; D21, Through hole; D22, Second bearing part; D23, End post. Detailed Implementation

[0037] To facilitate understanding of this utility model, the specific embodiments of this utility model will be described in more detail below with reference to the accompanying drawings.

[0038] Unless otherwise specified or defined, the terms "first," "second," etc., used in this document are for distinguishing names only and do not represent a specific number or order.

[0039] Unless otherwise stated or defined, the term “and / or” as used herein includes any and all combinations of one or more of the associated listed items.

[0040] It should be noted that in this article, "fixed to" or "connected to" can mean directly fixed to or connected to a component, or indirectly fixed to or connected to a component.

[0041] This utility model embodiment provides a welding device E10, such as Figures 1 to 9 As shown, the welding apparatus E10 includes a carrier D10 and a welding assembly E1.

[0042] The carrier D10 is provided with a first support portion D11 and a second support portion D22 arranged adjacent to each other; wherein, the first support portion D11 of the carrier D10 is used to support the PCB board, and the second support portion D22 is used to support the coil. Therefore, when it is necessary to solder the coil and the PCB board, the PCB board is placed on the first support portion D11, and the coil is placed on the second support portion D22. At this time, the two copper wires of the coil located at the beginning and end of the wire are respectively located above the two soldering points on the PCB board, so as to carry out the soldering operation of the subsequent soldering assembly E1.

[0043] Specifically, the welding assembly E1 includes a power supply E3, a welding drive device E11, and a welding head E12; an electrode E121 is provided on the welding head E12; the power supply E3 is connected to the electrode E121, and the output end of the welding drive device E11 is connected to the welding head E12; the welding head E12 has a first position and a second position; when the welding head E12 is in the first position, the electrode E121 is separated from the first support part D11; when the welding head E12 is in the second position, the electrode E121 is pressed against the first support part D11.

[0044] Specifically, during the welding operation, the PCB board is placed on the first support part D11, and the coil is placed on the second support part D22. The welding drive device E11 drives the welding head E12 to bring the electrode E121 into contact with a welding point on the PCB board on the first support part D11. The power supply E3 outputs a stable DC welding current, or the power supply E3 outputs AC power, which is then rectified into DC power by the power conversion device, and then converted into high-frequency current by the inverter circuit. Finally, a stable DC welding current is output and conducted to one of the welding points on the PCB board through the electrode E121. The resistance heat generated when the current flows through the welding point on the PCB board welds one welding point on the PCB board to a copper wire. After the welding point is completed, the welding drive device E11 drives the welding head E12 to move the electrode E121 to another welding point on the PCB board on the first support part D11. The current is guided to the welding point through the electrode E121, and the resistance heat generated welds the welding point on the PCB board to the copper wire, completing the welding operation.

[0045] Therefore, by setting adjacent first support part D11 and second support part D22 on the carrier D10, the two copper wires of the coil can be precisely mounted on the two solder points of the PCB when the coil and the PCB board are respectively supported by the two support parts. The welding component E1 outputs a stable DC welding current to the electrode E121 through the power supply E3. The resistance heat generated at the pressing point of the electrode E121 welds the solder point of the PCB board and the copper wire together to complete the welding operation. Compared with the existing tin soldering method, the use of solder can be omitted, thereby effectively preventing the problem of solder melting and splashing everywhere during welding, improving the product appearance and welding quality.

[0046] In some embodiments, the welding device E10 further includes a clamping assembly E2. The clamping assembly E2 includes a clamping drive device E21 and a clamping member E22. The output end of the clamping drive device E21 is connected to the clamping member E22. The clamping member E22 has a third position and a fourth position. When the clamping member E22 is in the third position, it clamps the workpiece on the first support portion D11. When the clamping member E22 is in the fourth position, it releases the workpiece on the first support portion D11. The workpiece is the aforementioned PCB board.

[0047] Specifically, during the soldering operation, the PCB board is placed on the first support part D11, and the coil is placed on the second support part D22. The clamping drive device E21 drives the clamping member E22 to clamp the PCB board on the first support part D11. Then, the soldering drive device E11 drives the soldering head E12 to bring the electrode E121 into contact with a soldering point on the PCB board on the first support part D11. The power supply E3 outputs a stable DC soldering current, or the power supply E3 outputs AC power, which is then rectified into DC power by the power conversion device and then converted into DC power by the inverter circuit. Switching to a high-frequency current, a stable DC welding current is ultimately output and conducted through electrode E121 to one of the welding points on the PCB board. The resistance heat generated when the current flows through the welding point on the PCB board welds one welding point to a copper wire. After the welding point is completed, the welding drive device E11 drives the welding head E12 to move electrode E121 to another welding point on the PCB board on the first support part D11. The current is guided to the welding point through electrode E121, and the resistance heat generated welds the welding point on the PCB board to the copper wire, completing the welding operation. The clamping component E2, driven by the clamping drive device E21, clamps the PCB board to the first support part D11 during welding, preventing the PCB board from shifting and affecting the welding effect.

[0048] In some embodiments, such as Figure 5 and Figure 9As shown, electrode E121 has a partition slit E122 along its axial direction to isolate the two sides of electrode E121, forming an independent first electrode E1211 and a second electrode E1212. Power supply E3 has a positive terminal and a negative terminal. The first electrode E1211 is connected to the positive terminal of power supply E3, and the second electrode E1212 is connected to the negative terminal of power supply E3. Specifically, the partition slit E122 is formed along the axial direction at the central axis of electrode E121 to isolate the two sides of electrode E121, forming two independent structures. Current flows into the first electrode E1211, passes through the solder joints on the PCB board, and returns to power supply E3 through the second electrode E1212, forming a closed loop. The function of the partition slit E122 is to isolate the current paths on both sides, ensuring that energy is accurately applied to the solder joints on the PCB board.

[0049] In some embodiments, such as Figure 5 As shown, the electrode E121 has a first side and a second side. The first side and the second side of the electrode E121 near its own end are inclined towards the central axis of the electrode E121, so that the end of the electrode E121 has a tapered structure. This end is the pressing end that presses against the workpiece on the first bearing part D11. Since the soldering points of the PCB board and the copper wire are very small, the tapered tip design of the electrode E121 can reduce the contact area, increase the current density, concentrate energy on the tiny solder joints, and further improve the soldering effect.

[0050] In some embodiments, such as Figure 1 , Figure 7 and Figure 8As shown, the carrier D10 includes a first carrier D1 and a second carrier D2. The first carrier D1 is provided with a first bearing portion D11; the second carrier D2 is provided with a second bearing portion D22 and a through hole D21. The second carrier D2 is detachably mounted on the first carrier D1. When the second carrier D2 is assembled on the first carrier D1, the first bearing portion D11 of the first carrier D1 passes through the through hole D21. Specifically, the carrier D10 is a split carrier comprising a first carrier D1 and a second carrier D2, which facilitates coil winding before soldering. The carrier D10 is mounted on a rotatable worktable on the machine base. Rotation of the worktable moves the carrier D10 to different workstations for different assembly processes. The first carrier D1 is fixedly mounted on the worktable. The PCB board is first loaded onto the first support D11, and then the second carrier D2 can be transferred to the winding device for winding. At this time, the PCB board is not affected by the first support D11. Despite the disturbance caused by the movement of the second carrier D2, it remains stably placed on the first carrier D1. After the second carrier D2 is wound, it is placed back on the first carrier D1. Since the second carrier D2 has a through hole D21, the first support part D11 of the first carrier D1 passes through the through hole D21, allowing the PCB board supported on the first support part D11 to be exposed on the second carrier D2. The PCB board and the coil are both on the surface of the second carrier D2, facilitating easy soldering of the PCB board and the coil via the electrode E121. It should be noted that when the PCB board is placed on the first support part D11 and the second carrier D2 is assembled on the first carrier D1, the surface of the PCB board is flush with the surface of the second carrier D2 and adjacent to the coil.

[0051] In some embodiments, the first support portion D11 is a vertical rod, which can be a square rod, a cylindrical rod, etc., without particular limitation. Specifically, in this embodiment, the vertical rod is a square rod so that the top of the vertical rod can fit the PCB board. In addition, the top of the vertical rod may be provided with a groove to confine the PCB board to the top of the vertical rod.

[0052] In some embodiments, the second carrier D2 has a receiving groove, and the second supporting part D22 is elastically disposed in the receiving groove. The sidewall of the second supporting part D22 is movably engaged with the groove wall of the receiving groove, specifically in a sliding engagement relationship. In its normal state, the second supporting part D22 at least partially protrudes from the surface of the second carrier D2. The portion of the second supporting part D22 exposed on the second carrier D2 in its normal state is a winding portion for winding a coil, and the winding portion is a cylinder. Specifically, the second supporting part D22 forms a stepped column with a smaller upper part and a larger lower part. The upper part of the second supporting part D22 is the winding portion, and the lower part of the second supporting part D22 is located within the receiving groove. The diameter of the groove opening is smaller than the diameter of the receiving groove itself, and the diameter of the groove opening is adapted to the diameter of the upper part of the second supporting part D22. The stepped surface of the second supporting part D22 prevents the lower part of the second supporting part D22 from disengaging from the receiving groove. Understandably, by elastically setting the second support portion D22 on the second carrier D2, the portion of the second support portion D22 that protrudes from the surface of the second carrier D2 in its normal state is used for winding the coil. When it is necessary to remove the coil for the next operation after welding, an external force can be applied to the second support portion D22 to move the second support portion D22 downwards into the receiving groove. At this time, the coil can be detached from the second support portion D22 and transferred to the next station for processing. After the external force is removed, the second support portion D22 can return to its normal state under the elastic action.

[0053] In some embodiments, such as Figure 7 and Figure 8As shown, the second carrier D2 has two end posts D23 protruding from it on one side edge near the through hole D21. The through hole D21 is located between the end posts D23 and the second support portion D22. Specifically, when the second carrier D2 is transferred to the winding device for winding, by setting the two end posts D23, the winding device winds one end post D23 of the second carrier D2, fixing the end of the coil to the end post D23. Then, the winding device winds the second support portion D22 of the second carrier D2 to form a coil. Finally, the winding device winds the other end post D23 of the second carrier D2, fixing the end of the coil to the end post D23. Thus, after the second carrier D2 is wound, the second carrier... When D2 is assembled on the first carrier D1, since the second carrier D2 has a through hole D21, the first bearing part D11 of the first carrier D1 passes through the through hole D21. The PCB board on the first bearing part D11 can be exposed on the second carrier D2 and is located exactly below the wire start and end of the coil, which facilitates the soldering operation of the PCB board and the wire start and end of the coil. In addition, the structure of the two end posts D23 can also facilitate the movement to the wire cutting station to cut off the excess copper wire after the soldering is completed, and then transfer to the waste wire clamping station to take out the cut waste copper wire.

[0054] In some embodiments, such as Figure 3 and Figure 4 As shown, the welding assembly E1 further includes a welding frame E13 and a first clamping arm E14 and a second clamping arm E15 disposed on the welding frame E13. The output end of the welding drive device E11 is connected to the welding frame E13 and drives the welding frame E13 to move closer to or away from the first support part D11. The first clamping arm E14 and the second clamping arm E15 together clamp the welding head E12. It should be noted that the welding head E12 is cylindrical, and the electrode E121 is also cylindrical, with the electrode E121 fixed to the bottom end of the welding head E12. By setting two clamping arms to clamp the welding head E12 together, the clamping effect of the welding head E12 can be improved, and the contact point position between the electrode E121 and the PCB board can be fixed, avoiding displacement caused by mechanical vibration or pressure changes during the welding process.

[0055] In some embodiments, such as Figure 4As shown, the second clamping arm E15 is movably connected to the welding frame E13; the welding assembly E1 also includes an adjustment mechanism E16, which is connected to the second clamping arm E15. The adjustment mechanism E16 adjusts the position of the second clamping arm E15 to adjust the clamping distance between the second clamping arm E15 and the first clamping arm E14. It can be understood that precisely adjusting the clamping distance between the first clamping arm E14 and the second clamping arm E15 through the adjustment mechanism E16 not only ensures stable clamping of the workpiece during welding, avoiding welding deviations or workpiece damage due to insecure clamping, but also makes it more convenient to replace or disassemble the welding head E12 for maintenance, without requiring complex disassembly and assembly operations of the entire welding assembly E1. Of course, in other embodiments, this adjustment structure can also be connected to the first clamping arm E14 and the second clamping arm E15 to simultaneously adjust the position of both clamping arms to adjust the clamping distance between them; no particular limitation is made here.

[0056] Specifically, in this embodiment, the adjustment mechanism E16 includes a guide member E161, a slider E162, and an adjusting screw E163. The guide member E161 is disposed on the welding frame E13 along the moving direction of the second clamping arm E15. The second clamping arm E15 is slidably disposed on the guide member E161 via the slider E162. The adjusting screw E163 is rotatably disposed on the welding frame E13, and the adjusting screw E163 is threadedly connected to the slider E162. Specifically, when a user applies force to the adjusting screw E163, the adjusting screw E163 rotates, thereby causing the slider E162 to slide left and right along the guide member E161, achieving the effect of moving the second clamping arm E15 relative to the welding frame E13, so as to quickly adjust the clamping distance between the first clamping arm E14 and the second clamping arm E15.

[0057] In some embodiments, such as Figure 2 As shown, the end of the clamping member E22 has a tapered structure. To improve the clamping effect on the PCB board, the clamping member E22 is positioned between two solder joints on the PCB board. Since the PCB board is a small PCB board, the tapered tip design of the clamping member E22 reduces the contact area, effectively avoiding interference with the soldering operation.

[0058] In some embodiments, such as Figure 3As shown, the welding drive device E11 includes a first welding drive element E111 and a second welding drive element E112. The output end of the first welding drive element E111 is connected to the second welding drive element E112 and drives the second welding drive element E112 to move along the extension direction of the two welding points on the PCB board. The output end of the second welding drive element E112 is connected to the welding head E12 and drives the welding head E12 to move closer to or further away from the first support part D11 in the height direction. Both the first welding drive element E111 and the second welding drive element E112 can be linear drive devices such as linear motors or linear modules. Specifically, in this embodiment, the two welding points on the PCB board are laterally distributed. Similarly, the driving direction of the first welding drive element E111 is also adapted to be laterally, and the driving direction of the second welding drive element E112 is vertical, to cooperate in forming a two-dimensional motion drive device to drive the electrode E121 to perform welding operations at different welding points. Of course, in other embodiments, the welding drive device E11 can also be a three-axis motion platform or other multi-axis motion platforms, without particular limitation.

[0059] In some embodiments, such as Figure 2 As shown, the first supporting part D11 is disposed near the edge of the carrier D10. The welding assembly E1 is disposed above the carrier D10 corresponding to the first supporting part D11. The clamping assembly E2 is disposed on the side of the carrier D10 near the first supporting part D11. The clamping drive device E21 drives the clamping member E22 to extend laterally from one side of the carrier D10 into the first supporting part D11. By positioning the welding assembly E1 above the carrier D10 and the clamping assembly E2 on one side of the carrier D10, the spatial layout is optimized, resulting in a compact structure, reduced space occupation, and effective avoidance of movement interference between the welding assembly E1 and the clamping assembly E2, allowing their movements to be independent. Specifically, the clamping drive device E21 is like a linear motor, laterally positioned, driving the clamping member E22 to extend or retract along one side of the carrier D10, thereby clamping and fixing the PCB board.

[0060] This utility model embodiment also provides an RFID chip assembly device, including a rotatable workstation and a welding device E10 as described above, with the carrier D10 mounted on the workstation. The workstation is rotatably mounted on a machine base. Specifically, the machine base can be sequentially provided with a PCB board loading position, a housing loading position, a winding position, a welding position, a cutting position, a coil assembly position, a waste wire clamp removal position, a detection position, and a unloading position along the circumferential direction of the workstation. By moving the carrier D10 to different workstations via the workstation, processes such as PCB board loading, coil winding, welding, cutting, coil assembly, and waste wire removal can be performed, ensuring continuous assembly of various components in the RFID chip. When the workstation moves the carrier D10 to the welding position, the welding device E10 can weld the coil and PCB board on the carrier D10.

[0061] The above embodiments are not an exhaustive list based on the present invention, and there may be other embodiments not listed. Any substitutions and improvements made without departing from the concept of the present invention are within the protection scope of the present invention.

Claims

1. A welding apparatus, characterized in that, The welding apparatus includes a carrier and welding components; The vehicle is provided with a first load-bearing part and a second load-bearing part arranged adjacent to each other; The welding assembly includes a power supply, a welding drive device, and a welding head; the welding head is provided with an electrode; the power supply is connected to the electrode, the output end of the welding drive device is connected to the welding head, the welding head has a first position and a second position, when the welding head is in the first position, the electrode is separated from the first support part, and when the welding head is in the second position, the electrode is pressed against the workpiece on the first support part.

2. The welding apparatus as described in claim 1, characterized in that, The electrode has a partition slit along its own axial direction, so that the electrode is isolated on both sides of the partition slit to form an independent first electrode and a second electrode. The power supply has a positive terminal and a negative terminal. The first electrode is connected to the positive terminal of the power supply, and the second electrode is connected to the negative terminal of the power supply.

3. The welding apparatus as described in claim 2, characterized in that, The electrode has a first side and a second side. The first side and the second side of the electrode near its own end are inclined toward the central axis of the electrode so that the end of the electrode has a tapered structure.

4. The welding apparatus as described in claim 1, characterized in that, The carrier includes a first carrier and a second carrier. The first carrier is provided with a first bearing portion. The second carrier is provided with a second bearing portion and has a through hole. The second carrier is detachably mounted on the first carrier. When the second carrier is assembled on the first carrier, the first bearing portion of the first carrier passes through the through hole.

5. The welding apparatus as described in claim 4, characterized in that, Two end posts protruding from the second carrier are provided on one edge near the through hole, and the through hole is located between the end posts and the second bearing portion; and / or, The first supporting part is a vertical rod; and / or, The second carrier has a receiving groove, and the second bearing part is elastically disposed in the receiving groove. The side wall of the second bearing part is movably engaged with the groove wall of the receiving groove. When the second bearing part is in the normal state, the part exposed on the second carrier is the winding part, which is a cylinder.

6. The welding apparatus according to any one of claims 1-5, characterized in that, The welding assembly further includes a welding frame and a first clamping arm and a second clamping arm disposed on the welding frame; the output end of the welding drive device is connected to the welding frame and drives the welding frame to move between a first position and a second position, and the first clamping arm and the second clamping arm together clamp the welding head.

7. The welding apparatus as described in claim 6, characterized in that, The second clamping arm is movably connected to the welding frame; the welding assembly further includes an adjustment mechanism, which is connected to the second clamping arm, and the adjustment mechanism adjusts the clamping distance between the second clamping arm and the first clamping arm by adjusting the position of the second clamping arm.

8. The welding apparatus according to any one of claims 1-5, characterized in that, The welding device further includes a clamping assembly; the clamping assembly includes a clamping drive device and a clamping member, the output end of the clamping drive device is connected to the clamping member, the clamping member has a third position and a fourth position, when the clamping member is in the third position, it clamps the workpiece on the first bearing part, and when the clamping member is in the fourth position, it releases the workpiece on the first bearing part.

9. The welding apparatus as described in claim 8, characterized in that, The end of the clamping element is tapered; and / or, The first bearing portion is disposed near the edge of the carrier, the welding assembly is disposed above the carrier corresponding to the first bearing portion, the clamping assembly is disposed on the side of the carrier near the first bearing portion, and the clamping drive device drives the clamping member to extend laterally from one side of the carrier into the first bearing portion.

10. An RFID chip assembly device, characterized in that, The device includes a rotating workstation and a welding apparatus as described in any one of claims 1-9, wherein the carrier is disposed on the workstation.

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