Plug-in welding device

Abstract

The utility model provides a plug-in welding device, and belongs to the technical field of circuit boards. According to the automatic welding machine, the plurality of guide insertion rods are arranged on the station table of the automatic welding machine, and the guide insertion holes corresponding to the guide insertion rods are formed in each welding die, so that the welding dies can alternately feed, discharge and weld on the station table, the time interval of machining steps is shortened, the machining efficiency is improved, and the production cost is reduced. Each welding die comprises a bottom frame and a pressing frame which are arranged in a split mode, circuit boards and plug-ins are clamped through the bottom frames and the pressing frames, feeding and discharging are facilitated, and a plurality of supporting legs are arranged on the sides, away from the pressing frames, of the bottom frames. The height of the surface, deviating from the circuit board, of the bottom frame can be increased through the supporting legs so as to adapt to the problem that wiring pins of the plug-in penetrate out of jacks of the circuit board and then extend out, therefore, the problems that the wiring pins of the plug-in are bent and damaged and welding is interfered are solved, operation is more convenient, and the requirement for rapid welding is met.

Description

TECHNICAL FIELD

[0001] The utility model relates to circuit board technical field, concretely relates to a plug welding device. BACKGROUND

[0002] As a common structure in electronic products, the circuit board can meet different use requirements through the on-off control of different circuits and has a decisive influence on the operation of the electronic product, so the circuit board becomes a key structure in the electronic product.

[0003] In the existing circuit board, part of the plug-in, such as diode, triode, etc. needs to be welded, at this time, the wiring pin of the plug-in needs to be inserted into the jack of the circuit board manually, then the circuit board is turned over, so that the wiring pin of the plug-in can be arranged upwards, the subsequent operator can manually weld the wiring pin of the plug-in and the printed circuit on the circuit board by using a soldering iron or other tools, or use the welding head of the automatic welding machine to weld the wiring pin of the plug-in and the printed circuit on the circuit board, so as to meet the plug-in welding requirement. In addition, with the development of automation technology, the plug-in welding adopts the welding mode of the automatic welding machine more and more commonly. For example, the patent CN204859788U discloses a processing flow line of circuit board, which includes a spot welding mechanism capable of automatically welding the pin of the circuit element to the circuit board, which realizes the automatic welding of the plug-in by the automatic welding machine. Although the automatic welding machine can be used to realize the automatic welding of the plug-in, it needs to cooperate with the clamping and positioning structure, that is, the circuit board and the plug-in to be welded are accurately and stably clamped on the work station table of the automatic welding machine through the clamping and positioning structure. Since the existing clamping and positioning structure usually needs to install corresponding limiting structure and pressing structure on the work station table, the clamping is carried out before welding, and the clamping is removed after welding, which needs to be carried out in sequence, and the time interval is relatively long, especially for the case of welding multiple plug-ins at the same time, each step needs a long time to complete, which leads to low overall processing efficiency. In addition, when the wiring pin of the plug-in is inserted into the jack on the circuit board, one hand needs to lift the circuit board to avoid the wiring pin of the plug-in being bent and damaged or interfering with the action of the welding head of the automatic welding machine, which has the problem of inconvenient operation, and is not conducive to the rapid welding of the plug-in. SUMMARY

[0004] In view of the above problems existing in the prior art, the present application provides a plug-in welding device to set a guide insertion rod on a work station of a welding machine, and additionally, at least two groups of welding dies are provided, each of which is provided with a guide insertion hole matched with the guide insertion rod, so that when part of the welding dies are welding, the other part of the welding dies can realize feeding and discharging operations, and the installation of each welding die on the work station can be realized by inserting the guide insertion rod into the guide insertion hole, thereby facilitating feeding and discharging and shortening the time interval between steps, improving the processing efficiency, and additionally, each welding die is a split die, and each side of the welding die away from the circuit board is provided with a supporting leg, which can suspend the welding die during the installation of the plug-in to provide a space for the wiring pins of the plug-in, thereby avoiding the problem of the wiring pins of the plug-in being bent and damaged, and the operation is more convenient and beneficial to the rapid welding of the plug-in.

[0005] The specific technical solutions are as follows:

[0006] A plug-in welding device, comprising an automatic welding machine, the automatic welding machine comprising a work station, characterized in that the work station further comprises a plurality of welding dies, a plurality of guide insertion rods are fixedly installed on the work station in a vertical direction, each of the welding dies is provided with a guide insertion hole corresponding to the plurality of guide insertion rods, and each of the welding dies is a split structure and comprises a base frame and a pressing frame, the base frame comprises a base plate, a first blocking strip, a plurality of first limiting blocks and a plurality of supporting legs, the plurality of guide insertion holes are arranged on the outer side edges of the base plate, a plurality of welding holes are formed in the base plate, one side of one face of the base plate is provided with the first blocking strip, a plurality of first limiting blocks are also arranged on the face of the base plate provided with the first blocking strip, the plurality of supporting legs are arranged on the face of the base plate away from the face provided with the first blocking strip, and the pressing frame is detachably arranged on the face of the base plate provided with the first blocking strip, the pressing frame comprises a pressing plate and a supporting strip, the pressing plate is arranged parallel to the base plate, an avoiding slot corresponding to the first blocking strip is formed in one side of one face of the pressing plate close to the base plate, a containing slot communicating with the avoiding slot is also formed in the face of the pressing plate provided with the avoiding slot, a plurality of second limiting blocks are arranged in the containing slot, and the supporting strip is arranged on the face of the pressing plate away from the base plate.

[0007] The plug-in welding device, wherein a plurality of mounting holes are formed in the work station, and the guide insertion rods are selectively mounted in different mounting holes.

[0008] The plug-in welding device, wherein the base frame further comprises an auxiliary block, the auxiliary block is arranged at each guide insertion hole, each auxiliary block is provided with an assembly hole corresponding to the guide insertion hole, and a guide sleeve corresponding to the guide insertion rod is mounted in the assembly hole.

[0009] The plug-in welding device, wherein the guide sleeve is a linear bearing.

[0010] In the aforementioned plug-in welding device, an auxiliary block is disposed on the side of the base plate with a first stop bar.

[0011] In the aforementioned plug-in welding device, when the pressure plate is installed on the base frame, both sides of the pressure plate abut against the corresponding auxiliary blocks.

[0012] The aforementioned plug-in welding device further includes an anti-detachment structure, which includes a side anti-detachment component and a bottom anti-detachment component. The side anti-detachment component is disposed between the clearance groove and the first stop bar, and the bottom anti-detachment component is disposed between the side of the pressure plate away from the clearance groove and the auxiliary block on the same side.

[0013] In the aforementioned plug-in welding device, the side anti-detachment component includes a ball, a telescopic spring, and a retaining ring. Both ends of the first retaining strip are provided with telescopic holes. A retaining ring is installed at the opening of the telescopic hole. The ball is located at the opening of the telescopic hole and extends out of the retaining ring on one side. The telescopic spring is installed inside the telescopic hole and abuts against the ball at one end.

[0014] In the aforementioned plug-in welding device, the orifice of the telescopic hole is provided with a flared opening, the flared opening has a stepped structure, a retaining ring is embedded in the flared opening, and the retaining ring and the flared opening are interference fit.

[0015] In the aforementioned plug-in welding device, the bottom anti-detachment component includes a clamp head and a clamping slot. The clamp head protrudes from the side wall of the pressure plate and is located on the side opposite to the side where the clearance groove is provided. The clamping slot is provided on the auxiliary block on the corresponding side, and a recessed clearance hole is provided on the inner wall of the side of the clamping slot near the bottom plate.

[0016] The positive effects of the above technical solution are:

[0017] The aforementioned plug-in welding device, by setting several guide rods and several welding molds with guide holes on the welding machine's worktable, ensures that each welding mold can cooperate with the guide rods, achieving stable placement of the welding mold on the worktable. While one welding mold is being welded, other welding molds can be loaded and unloaded, enabling replaceable loading, unloading, and welding, reducing step intervals and improving processing efficiency. Furthermore, each welding mold includes a separately arranged base frame and a pressure frame. One side of the base plate of the base frame cooperates with the pressure frame to mount the circuit board to be processed. The other side of the base plate is equipped with several support feet, allowing one side of the base plate to be suspended during plug-in installation. This allows the plug-in's wiring pins to extend into the suspended space after passing through the circuit board's insertion holes, preventing the wiring pins from being bent or damaged, facilitating operation, and enabling rapid plug-in welding. Attached Figure Description

[0018] Figure 1This is a schematic diagram showing the cooperation between the workstation and the welding mold in an embodiment of the plug-in welding device of this utility model;

[0019] Figure 2 This is a structural diagram of the base frame of a welding mold according to a preferred embodiment of the present invention;

[0020] Figure 3 This is a structural diagram of the pressure frame of the welding mold according to a preferred embodiment of the present invention.

[0021] In the attached diagram: 1. Workstation; 11. Guide rod; 12. Mounting hole; 2. Welding mold; 21. Base frame; 22. Press frame; 211. Base plate; 212. First stop bar; 213. First limit block; 214. Support foot; 215. Auxiliary block; 216. Guide sleeve; 221. Pressure plate; 222. Support bar; 2111. Guide insertion hole; 2112. Welding hole; 2211. Clearance groove; 2151. Assembly hole; 31. Ball bearing; 32. Retaining ring; 41. Clamp head; 42. Clamping slot; 421. Clearance hole. Detailed Implementation

[0022] To make the technical means, creative features, objectives, and effects of this utility model easier to understand, the following embodiments are provided in conjunction with the appendix. Figure 1 To be continued Figure 3 The technical solution provided by this utility model is described in detail, but the following content is not intended to limit this utility model.

[0023] Figure 1 This is a schematic diagram showing the cooperation between the worktable and the welding mold in an embodiment of the plug-in welding device of this utility model; Figure 2 This is a structural diagram of the base frame of a welding mold according to a preferred embodiment of the present invention; Figure 3 This is a structural diagram of the pressure frame of a welding mold according to a preferred embodiment of the present invention. Figure 1 , Figure 2 as well as Figure 3 As shown, the plug-in welding device provided in this embodiment includes an automatic welding machine and several welding molds 2. At this time, the automatic welding machine has a worktable 1, and the welding molds 2 are disassembled and installed on the worktable 1, so that the welding head of the automatic welding machine can weld the circuit board and plug-in placed on the welding mold 2.

[0024] Specifically, several guide rods 11 are fixedly installed vertically on the workstation 1. These guide rods 11 provide horizontal positioning on the workstation 1 and allow the welding mold 2 to be fitted onto them vertically. This ensures the welding mold 2 is securely mounted on the workstation 1, maintaining its stability during welding and improving the efficiency of assembly and disassembly. It also facilitates the alternating loading and unloading of multiple welding molds, thus increasing processing efficiency. Each welding mold 2 has guide holes 2111 corresponding to the guide rods 11, allowing for quick engagement with each guide rod 11. This positioning on the workstation 1 maintains stability during welding and facilitates the assembly and disassembly of the welding mold, better meeting the needs of alternating loading and unloading and welding. Furthermore, each welding mold 2 has a modular structure, facilitating the loading and unloading of circuit boards and other components. In addition, each welding mold 2 includes a base frame 21 and a pressure frame 22. The base frame 21 serves as the main carrier, while the pressure frame 22 restricts the relative movement of structures such as circuit boards on the base frame 21. The base frame 21 includes a base plate 211, a first stop bar 212, several first limit blocks 213, and several support feet 214. During assembly, several guide holes 2111 are positioned on the outer edge of the base plate 211, ensuring that the base frame 21 and the guide rod 11 cooperate on the outermost side without interfering with the central area. Furthermore, several welding holes 2112 are provided on the base plate 211, allowing the pins of the plug-in to be exposed through the welding holes 2112 after being installed in the plug-in holes of the circuit board, thus facilitating the automatic welding machine to weld the plug-in onto the circuit board. In addition, a first stop bar 212 is provided on one side of one side of the base plate 211. The first stop bar 212 serves as an edge restraint structure on the base plate 211, allowing the circuit board to be aligned when placed on the base frame 21, ensuring that the circuit board can be installed in place. At the same time, a plurality of first limiting blocks 213 are also provided at intervals on the side of the base plate 211 where the first stop bar 212 is provided. The first limiting blocks 213 correspond to different areas on the circuit board, restricting the position of the circuit board, further ensuring that the circuit board can be installed in place on the base frame 21. In addition, several support feet 214 are set on the side of the base plate 211 away from the first stop bar 212. Since the first stop bar 212 is used for positioning the circuit board, the support feet 214 are set on the side of the base plate 211 away from the circuit board. That is, after the wiring pins of the plug-in are inserted into the socket of the circuit board, the wiring pins of the plug-in will extend through the circuit board. At this time, the support feet 214 can suspend the bottom of the base plate 211. The suspended space provides clearance for the wiring pins of the extended plug-in, thereby preventing the wiring pins of the plug-in from being bent and damaged and from interfering with subsequent soldering. In addition, the operator does not need to lift the base plate 211 with one hand, making the operation more convenient.Furthermore, the pressure frame 22 is detached and mounted on the side of the base plate 211 with the first stop bar 212, meaning the pressure frame 22 is mounted on the side of the base frame 21 used for mounting the circuit board. This allows the pressure frame 22 to press down on the circuit board, improving the stability of the circuit board during soldering. The pressure frame 22 also includes a pressure plate 221 and a support bar 222. The pressure plate 221 is arranged parallel to the base plate 211, allowing for a closer fit when pressing down on the circuit board. Simultaneously, a clearance groove 2211 corresponding to the first stop bar 212 is provided on the side of the pressure plate 221 closest to the base plate 211. The clearance groove 2211 accommodates the first stop bar 212, achieving a mating installation of the pressure frame 22 and the base frame 21. This improves the positional accuracy during installation and increases assembly efficiency. In addition, a receiving groove communicating with the clearance groove 2211 is provided on the side of the pressure plate 221. Several second limiting blocks are provided within the receiving groove. The receiving groove provides space for the circuit board and components, and the second limiting blocks also restrict the position of the circuit board and other structures, ensuring accurate and stable positioning of the circuit board and components during soldering, thus guaranteeing the soldering effect. Furthermore, a support strip 222 is provided on the side of the pressure plate 221 facing away from the base plate 211, so that the soldering mold 2 can be supported on the worktable 1 during subsequent soldering.

[0025] More specifically, a number of mounting holes 12 are provided on the workstation 1. At this time, the guide rod 11 is selectively installed in different mounting holes 12. That is, by selecting different mounting holes 12 to install the guide rod 11, the installation position of the guide rod 11 on the workstation 1 can be adjusted, thereby adapting to the installation of welding molds 2 of different sizes and meeting the welding requirements for plugging into circuit boards of different specifications and models.

[0026] More specifically, the base frame 21 also includes auxiliary blocks 215. These auxiliary blocks 215 are positioned at each guide hole 2111, meaning each guide hole 2111 on the base plate 211 has an auxiliary block 215, which strengthens the structural strength of the guide hole 2111. Furthermore, each auxiliary block 215 has a mounting hole 2151 corresponding to the guide hole 2111. When the auxiliary block 215 is installed on the base plate 211, the mounting hole 2151 on the auxiliary block 215 is aligned with and communicates with the guide hole 2111, extending the guide hole 2111 and increasing the mating area between the base frame 21 and the guide rod 11, thereby improving guiding stability. Additionally, a guide sleeve 216 corresponding to the guide rod 11 is installed in the mounting hole 2151. The guide sleeve 216 cooperates with the guide rod 11 to achieve guidance, resulting in better wear resistance and a longer service life. Preferably, the guide sleeve 216 is installed in the assembly hole 2151 with an interference fit, which makes the connection between the two more secure and the assembly more convenient.

[0027] More specifically, the guide sleeve 216 set in the assembly hole 2151 of the auxiliary block 215 is a linear bearing. When the guide sleeve 216 is fitted outside the vertically arranged guide rod 11, it can better adapt to the axial movement of the guide rod 11, reduce wear during relative movement, and have a longer service life. It also makes the assembly and disassembly of the welding mold 2 on the worktable 1 smoother and the structural design more reasonable.

[0028] More specifically, the auxiliary block 215 is set on the side of the base plate 211 with the first stop strip 212, so that the protrusion direction of the auxiliary block 215 relative to the base plate 211 is consistent with the protrusion direction of the first stop strip 212 relative to the base plate 211, thereby realizing the rational use of space and avoiding the problem of the welding mold 2 being too large.

[0029] More specifically, when the pressure frame 22 is installed on the base frame 21, the two sides of the pressure plate 221 are respectively abutted against the auxiliary blocks 215 on the corresponding sides. That is, the auxiliary blocks 215 on the base frame 21 can also provide a limit for the installation of the pressure frame 22 on the base frame 21, ensuring that the pressure frame 22 can be installed on the base frame 21 quickly and accurately, and accurately press the circuit board and plug-in. In addition, it also ensures the guiding function of the auxiliary blocks 215 themselves, realizing the multi-purpose of one structure and higher structural utilization.

[0030] More specifically, an anti-detachment structure is also provided between the pressure frame 22 and the base frame 21. This anti-detachment structure includes a side anti-detachment component and a bottom anti-detachment component. During installation, the side anti-detachment component is positioned between the clearance groove 2211 and the first stop bar 212, achieving mutual restraint between the pressure frame 22 and the base frame 21 on the side with the first stop bar 212. This prevents the pressure frame 22 from detaching from the base frame 21 after installation, ensuring stability after the circuit board and components are pressed together. Additionally, the bottom anti-detachment component is positioned between the side of the pressure plate 221 away from the clearance groove 2211 and the auxiliary block 215 on the same side. This bottom anti-detachment component achieves mutual restraint between the pressure frame 22 and the side of the base frame 21 away from the first stop bar 212, allowing both sides of the pressure frame 22 to engage with the base frame 21, balancing the force on the pressure frame 22 and improving its stability after installation on the base frame 21, thus ensuring welding quality.

[0031] More specifically, the side anti-detachment component includes a ball bearing 31, a telescopic spring, and a retaining ring 32. At this time, telescopic holes are provided at both ends of the first stop bar 212, and a retaining ring 32 is installed at the opening of the telescopic hole. That is, the retaining ring 32 reduces the opening of the telescopic hole, making the opening of the telescopic hole a constricted structure, which provides conditions for subsequently preventing the ball bearing 31 from detaching from the telescopic hole. During assembly, the ball bearing 31 is positioned at the opening of the telescopic hole, with one side extending from the retaining ring 32. A telescopic spring is installed inside the telescopic hole, with one end abutting against the ball bearing 31. This provides preload to the ball bearing 31 protruding from the retaining ring 32. The protruding side of the ball bearing 31 forms a protrusion at the end of the first stop bar 212, causing the clearance groove 2211 of the pressure frame 22 to engage with the first stop bar 212. This allows the protruding side of the ball bearing 31 to be compressed by the inner wall of the clearance groove 2211, achieving mutual restraint between the pressure frame 22 and the base frame 21. This prevents one side of the pressure frame 22 from accidentally detaching from the base frame 21, preventing the welding mold 2 from separating during transport. Under external force, the ball bearing 31 can retract into the telescopic hole, allowing the pressure frame 22 to detach from the base frame 21, meeting loading and unloading requirements.

[0032] More specifically, a flared opening is provided at the opening of the expansion hole. In this case, the flared opening has a stepped structure, so that one end of the opening of the expansion hole is a stepped hole. During assembly, the retaining ring 32 is embedded in the flared opening, and the retaining ring 32 and the flared opening are interference fit, which realizes the hidden installation of the retaining ring 32 at the opening of the expansion hole, thereby maintaining the flatness of the end plane of the first retaining strip 212 and facilitating the disassembly and assembly of the pressure frame 22.

[0033] More specifically, the bottom anti-detachment component located between the side of the pressure plate 221 opposite to the clearance groove 2211 and the auxiliary block 215 on the same side includes a locking head 41 and a locking slot 42. At this time, the locking head 41 is protruding from the side wall of the pressure plate 221 and located on the side opposite to the clearance groove 2211, so that the locking head 41 can form a protrusion on the side of the pressure plate 221. Simultaneously, the locking slot 42 is located on the corresponding auxiliary block 215, so that when the pressure plate 221 is limited by the auxiliary block 215... When installing the pressure frame 22 onto the base frame 21, the clamping head 41 can be inserted into the corresponding slot 42 first. The clamping head 41 and the slot 42 cooperate to achieve mutual positioning between the pressure plate 221 and the auxiliary block 215. Then, the side of the pressure frame 22 closest to the first stop 212 is pushed against the first stop 212, so that the first stop 212 is engaged in the clearance groove 2211. This achieves mutual positioning between the ball 31 and the inner wall of the clearance groove 2211, ensuring stable installation of the pressure frame 22 on the base frame 21 and facilitating the transfer of the welding mold 2. Conversely, the end of the pressure frame 22 closest to the first stop 212 is lifted first, causing the ball 31 to disengage from the inner wall of the clearance groove 2211. Then, the clamping head 41 is processed to disengage from the slot 42, allowing the pressure frame 22 to separate from the base frame 21, making the operation more convenient. In addition, a recessed clearance hole 421 is provided on the inner wall of the bayonet 42 near the base plate 211. That is, the clearance hole 421 is formed by further recessing the inner wall of the bayonet 42, so that when the ball 31 and the clearance groove 2211 are not in contact, the chuck head 41 can slightly deflect within the bayonet 42, thereby adapting to the slightly tilted state of the pressure frame 22 and avoiding jamming. The structural design is more reasonable.

[0034] The plug-in welding device provided in this embodiment includes an automatic welding machine and several welding molds 2. By setting several guide rods 11 on the worktable 1 of the automatic welding machine, and each welding mold 2 is provided with guide holes 2111 corresponding to the guide rods 11, the welding molds 2 can alternately load and unload materials and weld on the worktable 1, thereby shortening the time interval between processing steps and improving processing efficiency. In addition, each welding mold 2 includes a separately arranged base frame 21 and a pressure frame 22. The base frame 21 and the pressure frame 22 are used to clamp the circuit board and the plug-in, which facilitates loading and unloading. Several support feet 214 are provided on the side of the base frame 21 away from the pressure frame 22. The support feet 214 can raise the height of the side of the base frame 21 away from the circuit board to accommodate the problem of the plug-in wiring pins extending out of the plug-in holes of the circuit board, thereby avoiding the problem of the plug-in wiring pins being bent and damaged and interfering with welding. The operation is more convenient and meets the needs of rapid welding.

[0035] The above are merely preferred embodiments of the present utility model and are not intended to limit the implementation methods and protection scope of the present utility model. Those skilled in the art should realize that any equivalent substitutions and obvious changes made based on the description and illustrations of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A plug-in welding apparatus, comprising an automatic welding machine, the automatic welding machine including a workstation, characterized in that, It also includes several welding molds. Several guide rods are fixedly installed vertically on the worktable. Each welding mold has guide holes corresponding to the guide rods. Each welding mold is a split structure, including a base frame and a pressure frame. The base frame includes a base plate, a first stop bar, several first limiting blocks, and several support feet. The guide holes are located on the outer edge of the base plate. Several welding holes are provided on the base plate. The first stop bar is provided on one side of one side of the base plate. Additionally, on the side of the base plate where the first stop bar is located... A plurality of first limiting blocks are spaced apart, and a plurality of supporting feet are disposed on the side of the base plate opposite to the side with the first stop strip. The pressure frame is detachably disposed on the side of the base plate with the first stop strip. The pressure frame includes a pressure plate and a support strip. The pressure plate is arranged parallel to the base plate. A clearance groove corresponding to the first stop strip is opened on the side of the pressure plate near the base plate. A receiving groove communicating with the clearance groove is also opened on the side of the pressure plate with the clearance groove. A plurality of second limiting blocks are disposed in the receiving groove. The support strip is disposed on the side of the pressure plate opposite to the base plate.

2. The plug-in welding device according to claim 1, characterized in that, The workstation platform has several mounting holes, and the guide rod is selectively installed in different mounting holes.

3. The plug-in welding device according to claim 1, characterized in that, The base frame also includes auxiliary blocks, which are disposed at each of the guide holes. Each of the auxiliary blocks has an assembly hole corresponding to the guide hole, and a guide sleeve corresponding to the guide rod is installed in the assembly hole.

4. The plug-in welding device according to claim 3, characterized in that, The guide sleeve is a linear bearing.

5. The plug-in welding apparatus according to claim 3 or 4, characterized in that, The auxiliary block is disposed on the side of the base plate that has the first stop bar.

6. The plug-in welding apparatus according to claim 5, characterized in that, When the pressure frame is installed on the base frame, the two sides of the pressure plate abut against the auxiliary blocks on the corresponding sides.

7. The plug-in welding apparatus according to claim 6, characterized in that, It also includes an anti-detachment structure, which includes a side anti-detachment component and a bottom anti-detachment component. The side anti-detachment component is disposed between the clearance groove and the first stop bar, and the bottom anti-detachment component is disposed between the side of the pressure plate away from the clearance groove and the auxiliary block on the same side.

8. The plug-in welding apparatus according to claim 7, characterized in that, The side anti-detachment component includes a ball bearing, a telescopic spring, and a retaining ring. Both ends of the first retaining strip are provided with telescopic holes. The retaining ring is installed at the opening of the telescopic hole. The ball bearing is located at the opening of the telescopic hole and extends out of the retaining ring on one side. The telescopic spring is installed in the telescopic hole and abuts against the ball bearing at one end.

9. The plug-in welding apparatus according to claim 8, characterized in that, The telescopic hole has a flared opening with a stepped structure. The retaining ring is embedded in the flared opening and the retaining ring and the flared opening are interference fit.

10. The plug-in welding apparatus according to claim 7, characterized in that, The bottom anti-detachment component includes a locking head and a locking slot. The locking head protrudes from the side wall of the pressure plate and is located on the side opposite to the clearance groove. The locking slot is located on the auxiliary block on the corresponding side, and a recessed clearance hole is provided on the inner wall of the locking slot on the side close to the bottom plate.

Images