An automatic spot welding device for shielding can baffle shell

Abstract

The present application relates to the technical fields of shielding cover spring piece spot welding, in particular to an automatic spot welding equipment for shielding cover spring piece, which comprises a spot welding equipment, the inside of the spot welding equipment is provided with an X-axis moving component, the two sides of the X-axis moving component are provided with Z-axis moving components, the upper surface of the X-axis moving component is movably provided with a spot welding die mounting platform, and the side of the X-axis moving component is provided with a spot welding die fixing frame assembly above, which has the beneficial effects that: the shielding cover spot welding die is used for positioning the shielding cover and the marble, which can avoid virtual welding caused by the mispositioning of the shielding cover and the marble, and the positioning sleeve and the positioning sleeve pipe are designed to cooperate on the spot welding positioning sealing plate, and the positioning sleeve is clamped and positioned during each spot welding, the buffer ring in the positioning sleeve can press the spot welding area to prevent warping and thermal deformation, and the positioning sleeve pipe and the positioning sleeve establish a nitrogen filling and pressure maintaining channel to maintain the pressure and temperature of the spot welding area, thereby improving the spot welding quality.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of shielding cover spring piece spot welding, and particularly relates to an automatic spot welding equipment for shielding cover spring pieces. BACKGROUND

[0002] The shielding cover spring piece is a key precision hardware for electromagnetic shielding and grounding connection in electronic equipment, is usually installed at the edge or bottom of a metal shielding cover, and keeps reliable contact with a bare copper area or a grounding pad on a PCB through elastic deformation. Generally, the shielding cover spring piece is formed by high-speed stamping, and is laser spot welded or projection welded to the side wall of the shielding cover to avoid the problems of virtual welding and poor flatness caused by traditional manual soldering. In the prior art, the copper platform (lower electrode) of the automatic spot welding machine is relatively fixed, and the shielding cover spring piece and the shielding cover are prone to misalignment during welding, resulting in virtual welding.

[0003] The Chinese patent document with the publication number CN106270994B proposes an automatic spot welding equipment, which fixes the lower electrode part on the rack, sets the bottom of the welding piece on the lower electrode part, fixes the upper electrode part on the rack and above the lower electrode part, fixes the side electrode part on the rack and at the side of the lower electrode part, and sets the fastening device on the lower electrode part. The fastening device is in contact with the side of the welding piece, and the side of the welding piece is pushed at the bottom edge of the welding piece in this way to solve the above technical problems. However, in the above-mentioned way, the upper and lower electrodes and the side electrode are welded at the same time, which may cause the axial magnetic field generated by the current of the lower electrode, the transverse magnetic field generated by the current of the side electrode, and the molten metal pushed to the side by the Lorentz force. After cooling, micro-cracks are formed, which affect the quality, and the heat input is doubled. The welding of the shielding cover and the spring is prone to warping and excessive deformation.

[0004] Therefore, the present application proposes an automatic spot welding equipment for shielding cover spring pieces to solve the problem that the simultaneous butt joint spot welding of the upper and lower electrodes and the side electrode is prone to warping, excessive deformation and micro-cracks in the welding of the shielding cover and the spring in the prior art. The fastener is improved, the shielding cover and the spring are fixed by using the spot welding die with positioning points on both sides, and the uniform spot welding is realized by cooperating with the spot welding positioning assembly, so as to reduce the thermal deformation and improve the spot welding quality. SUMMARY

[0005] In view of the deficiencies in the prior art, the present application aims to provide an automatic spot welding equipment for shielding cover spring pieces to solve the problems in the background art.

[0006] In order to achieve the above object, the present application provides the following technical scheme: An automatic spot welding equipment for shielding case elastic sheet, comprising a spot welding equipment, an X-axis moving component is arranged in the spot welding equipment, Z-axis moving components are arranged on both sides of the X-axis moving component, a spot welding die mounting platform is movably mounted on the upper surface of the X-axis moving component, a spot welding die fixing frame assembly is arranged above one side of the X-axis moving component, a spot welding telescopic arm mounting platform is arranged on one side of the Z-axis moving component, a shielding case spot welding die is arranged above the spot welding die mounting platform, a telescopic fixing rod is arranged on one side of the spot welding telescopic arm mounting platform, a spot welding fixing table is fixedly mounted on the output end of the telescopic fixing rod, spot welding positioning sealing plates are symmetrically arranged on both sides of the shielding case spot welding die, an electrode assembly is fixedly mounted in the middle of the spot welding fixing table, and a positioning sleeve is arranged outside the electrode head of the electrode assembly.

[0007] Preferably, magnetic positioning mounting frames are movably mounted on both side walls of the shielding case spot welding die in a symmetrical manner, the side surfaces of the magnetic positioning mounting frames are in contact with the side surfaces of the spot welding positioning sealing plates, the side walls of the spot welding positioning sealing plates are uniformly provided with positioning holes, and the side surfaces of the spot welding positioning sealing plates close to the shielding case spot welding die are uniformly provided with positioning sleeves.

[0008] Preferably, the positioning sleeves are fixedly mounted on the side surfaces of the spot welding positioning sealing plates, the positioning sleeves are internally provided with nitrogen charging cavities, spring return rods are fixedly mounted on the internal side surfaces of the positioning sleeves, and air outlets one are formed in the inner side walls of the positioning sleeves.

[0009] Preferably, a buffer ring is movably mounted in the nitrogen charging cavity, a return gasket is arranged on the outer surface of the buffer ring, the side surface of the return gasket is fixedly connected with one end of the spring return rod, and a pressure gasket is fixedly mounted above the outer surface of the buffer ring.

[0010] Preferably, air outlets two are formed in the inner side walls of the buffer ring, and an insulating column is fixedly mounted on the outer side surface of the buffer ring.

[0011] Preferably, the positioning sleeves are fixedly mounted on the side walls of the spot welding fixing table, the electrode of the electrode assembly is located in the inner center of the positioning sleeve, the positioning sleeve is internally provided with an annular cavity, a nitrogen injection pipe is fixedly mounted at one end of the inner wall of the positioning sleeve, and a pressure sensor is fixedly mounted above the annular cavity of the positioning sleeve.

[0012] Preferably, positioning insertion holes matched with the nitrogen injection pipe and the pressure sensor are formed in the side walls of the positioning sleeve, and the position of the pressure sensor corresponds to the position of the pressure gasket.

[0013] Preferably, the outer side of the positioning sleeve is provided with a nitrogen connecting pipe, which is fixedly installed on the side surface of the spot welding fixing table, and the inner side branch pipe of the nitrogen connecting pipe is fixedly connected with the side wall of the positioning sleeve.

[0014] Preferably, the inner side of the shielding cover spot welding die is vertically symmetrically slidably installed with a vertical positioning frame, one side of the vertical positioning frame is slidably installed with a pressing plate, an adjusting bolt is arranged above the pressing plate, the adjusting bolt is rotatably installed in the middle part of the vertical positioning frame, and a vertical spot welding groove is formed in the side wall of the pressing plate.

[0015] Preferably, the inner side of the shielding cover spot welding die is horizontally symmetrically slidably installed with a horizontal positioning frame, a horizontal spot welding groove is formed in the side wall of the horizontal positioning frame, and a sliding groove matched with the vertical positioning frame is formed in the side wall of the horizontal positioning frame.

[0016] Compared with the prior art, the present application has the following advantages:

[0017] By designing the shielding cover spot welding die for positioning the shielding cover and the marble, the virtual welding caused by mispositioning of the shielding cover and the marble can be avoided, and the positioning sleeve and the positioning sleeve pipe are designed on the spot welding positioning cover plate to cooperate with each other, so that the clamping positioning is carried out during each spot welding, the buffer ring in the positioning sleeve can press the spot welding area to prevent the warping and thermal deformation, and the positioning sleeve pipe and the positioning sleeve establish a nitrogen filling and pressure maintaining channel to maintain the pressure and temperature of the spot welding area, thereby improving the spot welding quality and solving the problem of warping and micro-cracks in the shielding cover and the marble during the simultaneous butt joint spot welding of the upper and lower electrodes and the side electrode. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 It is a schematic diagram of the overall structure of the present application;

[0019] Figure 2 It is a schematic diagram of the overall structure of the shielding cover spot welding die in the feeding state of the present application;

[0020] Figure 3 It is a schematic diagram of the overall structure of the present application in the spot welding preparation state;

[0021] Figure 4 It is a schematic diagram of the overall structure of the present application in the spot welding state;

[0022] Figure 5 It is a schematic diagram of the overall structure of the shielding cover spot welding die of the present application;

[0023] Figure 6 It is a schematic diagram of the overall structure of the shielding cover spot welding die before the installation of the spot welding positioning cover plate of the present application;

[0024] Figure 7Split structure schematic diagram of shielding cover spot welding die of the present application after disassembly;

[0025] Figure 8 Whole structure schematic diagram of spot welding positioning sealing plate of the present application;

[0026] Figure 9 Internal structure schematic diagram of shielding cover spot welding die of the present application;

[0027] Figure 10 Internal structure schematic diagram of one side of shielding cover spot welding die of the present application;

[0028] Figure 11 Structure schematic diagram of one side of vertical positioning frame of the present application;

[0029] Figure 12 Structure schematic diagram of the other side of vertical positioning frame of the present application;

[0030] Figure 13 Whole split structure schematic diagram of positioning sleeve of the present application;

[0031] Figure 14 Whole structure schematic diagram of Z-axis moving part of the present application;

[0032] Figure 15 Whole structure schematic diagram of telescopic fixing rod and spot welding fixing table of the present application;

[0033] Figure 16 Whole structure schematic diagram of electrode assembly and positioning sleeve of the present application;

[0034] Figure 17 Structure schematic diagram of positioning sleeve at A-A section of the present application;

[0035] Figure 18 Structure schematic diagram of positioning sleeve and positioning sleeve after positioning clamping of the present application;

[0036] Figure 19 Structure schematic diagram of positioning sleeve and positioning sleeve after positioning clamping of the present application, and positioning sleeve at B-B section;

[0037] Figure 20 Structure schematic diagram of positioning sleeve at B-B section in the retreating state of buffer ring.

[0038] In the figure: 1, spot welding equipment; 2, X-axis moving part; 21, spot welding die mounting platform; 22, spot welding die fixing frame assembly; 3, Z-axis moving part; 31, spot welding telescopic arm mounting platform; 4, shielding cover spot welding die; 41, spot welding positioning sealing plate; 411, positioning hole; 412, positioning sleeve; 413, nitrogen gas filling cavity; 414, spring reset rod; 415, gas port one; 416, buffer ring; 4161, insulating column; 4162, reset gasket; 4163, pressure gasket; 417, gas port two; 42, magnetic attraction positioning mounting frame; 43, vertical positioning frame; 431, pressing plate; 4311, vertical spot welding groove; 432, adjusting bolt; 44, horizontal positioning frame; 441, horizontal spot welding groove; 5, telescopic fixing rod; 6, spot welding fixing table; 61, nitrogen gas connecting pipe; 62, electrode assembly; 63, positioning sleeve; 631, pressure sensor; 632, nitrogen gas injection pipe. DETAILED DESCRIPTION

[0039] In order to make the purpose, technical solutions of the present application clear, complete description, and the advantages are more clear and obvious, the following will be combined with the drawings to further describe the embodiments of the present application. It should be understood that the specific embodiments described here are part of the embodiments of the present application, not all embodiments, only to explain the embodiments of the present application, and not used to limit the embodiments of the present application, all other embodiments obtained by the person skilled in the art without doing creative work, belong to the scope of protection of the present application.

[0040] Embodiment one

[0041] Please refer to Figures 1 to 20The application provides a technical scheme: an automatic spot welding device for shielding case spring sheets, which comprises a spot welding device 1, an X-axis moving component 2 arranged in the spot welding device 1, Z-axis moving components 3 arranged on the two sides of the X-axis moving component 2, a spot welding die mounting platform 21 movably mounted on the upper surface of the X-axis moving component 2, a spot welding die fixing frame assembly 22 arranged above one side of the X-axis moving component 2, a spot welding telescopic arm mounting platform 31 arranged on one side of the Z-axis moving component 3, a shielding case spot welding die 4 arranged above the spot welding die mounting platform 21, a telescopic fixing rod 5 arranged on one side of the spot welding telescopic arm mounting platform 31, and a spot welding fixing table 6 fixedly mounted on the output end of the telescopic fixing rod 5; in the embodiment, a driving assembly is arranged in the X-axis moving component 2 and used for driving the spot welding die mounting platform 21 to move along the X-axis direction to realize position movement, the spot welding die mounting platform 21 is used for mounting the shielding case spot welding die 4, the X-axis moving component 2 is used for moving the position of a workpiece, automatic spot welding is facilitated, a telescopic rod is arranged above the spot welding die fixing frame assembly 22 and used for controlling the lifting of the spot welding die fixing frame assembly 22, the spot welding die fixing frame assembly 22 is used for lifting the shielding case spot welding die 4 to facilitate unloading and loading, the spot welding die fixing frame assembly 22 is lowered after the shielding case spot welding die 4 is mounted to limit and fix the upper side of the shielding case spot welding die 4, the shielding case spot welding die 4 is kept stable along with the movement of the X-axis moving component 2, the Z-axis moving component 3 is mainly used for driving the spot welding telescopic arm mounting platform 31 to move along the Z-axis direction, the spot welding telescopic arm mounting platform 31 is used for mounting the telescopic fixing rod 5, the telescopic fixing rod 5 is mainly used for mounting the spot welding fixing table 6 and controlling the telescopic movement of the spot welding fixing table 6 along the Z-axis direction, the spot welding fixing table 6 is used for mounting an electrode assembly 62, the electrode assembly 62 is used for spot welding and retreating along with the telescopic movement of the telescopic fixing rod 5, two spot welding positioning sealing plates 41 are symmetrically arranged on the two sides of the shielding case spot welding die 4, the electrode assembly 62 is fixedly mounted in the middle of the spot welding fixing table 6, and a positioning sleeve 63 is arranged outside the electrode head of the electrode assembly 62; in the embodiment, the electrode assembly 62 comprises an electrode and a power connection control assembly, the electrode assembly 62 is arranged on the two sides of the shielding case spot welding die 4, the traditional up-down distributed electrode spot welding mode is changed, two-side spot welding is adopted, the workpiece is clamped by cooperating with the shielding case spot welding die 4, the spot welding position is accurately positioned, and the problem of virtual welding is avoided.

[0042] The two side walls of the shielding cover spot welding die 4 are symmetrically movably installed with magnetic attraction positioning mounting racks 42, the side surfaces of the magnetic attraction positioning mounting racks 42 are in contact with the side surfaces of the spot welding positioning cover plates 41, the side walls of the spot welding positioning cover plates 41 are uniformly distributed with positioning holes 411, the side surfaces of the spot welding positioning cover plates 41 close to the shielding cover spot welding die 4 are uniformly distributed with positioning sleeves 412, the positioning holes 411 correspond to the positions of the positioning sleeves 412, the positioning sleeves 412 are fixedly installed on the side surfaces of the spot welding positioning cover plates 41, the inside of the positioning sleeves 412 is provided with nitrogen gas filling cavities 413, the inside side surfaces of the positioning sleeves 412 are fixedly installed with spring return rods 414, the inside walls of the positioning sleeves 412 are provided with air outlets 415, the inside of the nitrogen gas filling cavities 413 is movably installed with buffer rings 416, the outer surfaces of the buffer rings 416 are provided with return gaskets 4162, the side surfaces of the return gaskets 4162 are fixedly connected with one end of the spring return rods 414, the outer surfaces of the buffer rings 416 are fixedly installed with pressure gaskets 4163 above, the inside walls of the buffer rings 416 are provided with air outlets 417, and the outer side surfaces of the buffer rings 416 are fixedly installed with insulating columns 4161; in this embodiment, the magnetic attraction positioning mounting racks 42 and the side surfaces of the shielding cover spot welding die 4 are fixed by spring welding, the magnetic attraction positioning mounting racks 42 and the side surfaces of the spot welding positioning cover plates 41 use the principle of magnetic attraction to install the spot welding positioning cover plates 41 outside the shielding cover spot welding die 4, and with the advancement of the spot welding fixing table 6, the spot welding positioning cover plates 41 and the magnetic attraction positioning mounting racks 42 are compressed at the same time, so that the buffer rings 416 installed in the positioning sleeves 412 are in contact with the shielding cover and the shrapnel workpiece for pressing, and the thermal deformation of the workpiece is prevented during the spot welding process.

[0043] Example two

[0044] Please refer to Figures 1 to 20On the basis of embodiment one, in order to improve the quality of spot welding, the embodiment also proposes that the positioning sleeve 63 is fixedly installed on the side wall of the spot welding fixing table 6, the electrode of the electrode assembly 62 is located in the inner center of the positioning sleeve 63, the inner wall of the positioning sleeve 63 is fixedly installed with the nitrogen injection pipe 632 at one end, the annular cavity of the positioning sleeve 63 is fixedly installed with the pressure sensor 631 above, the side wall of the positioning sleeve 412 is provided with the positioning insertion hole matched with the nitrogen injection pipe 632 and the pressure sensor 631, the position of the pressure sensor 631 corresponds to the position of the pressure pad 4163, the outer side of the positioning sleeve 63 is provided with the nitrogen connecting pipe 61, the nitrogen connecting pipe 61 is fixedly installed on the side surface of the spot welding fixing table 6, and the inner side branch pipe of the nitrogen connecting pipe 61 is fixedly connected with the side wall of the positioning sleeve 63; in the embodiment, the nitrogen connecting pipe 61 mainly plays the role of connecting the nitrogen supply pipe, and nitrogen is transported into the electrode assembly 62 through the branch pipe; in addition to playing the role of inserting the positioning hole 411 and being clamped with the positioning sleeve 412 to play the role of positioning before spot welding, the positioning sleeve 63 also plays the role of establishing the nitrogen filling channel with the positioning sleeve 412; when the telescopic fixing rod 5 is pushed and the positioning sleeve 63 is inserted into the positioning hole 411, the nitrogen injection pipe 632 at the front end of the positioning sleeve 63 is inserted into the inner part of the positioning sleeve 412, the nitrogen filling channel is established, the spot welding fixing table 6 continues to push the telescopic fixing rod 5, and the spot welding positioning sealing plate 41 is extruded; at this time, the spot welding positioning sealing plate 41 moves inward as a whole, the insulating column 4161 at one end of the buffer ring 416 contacts the workpiece surface to press the spot welding area, the buffer ring 416 retracts into the inner part of the positioning sleeve 412 as the spot welding positioning sealing plate 41 continues to be extruded, the front end of the positioning sleeve 412 contacts the workpiece surface, the air port two 417 moves to the position of the air port one 415 and coincides with the air port one 415 as the buffer ring 416 moves, the nitrogen filling channel is opened, the pressure pad 4163 contacts the pressure sensor 631 to generate a pressure signal, at this time, the telescopic fixing rod 5 stops pushing to prevent overpressure problem of the workpiece, the electrode of the electrode assembly 62 spot welds the workpiece, nitrogen is injected into the spot welding area through the nitrogen filling channel between the positioning sleeve 412 and the positioning sleeve 63 for pressure maintaining and cooling after spot welding, the quality of spot welding is improved, the nitrogen filling cavity 413 plays the role of injecting nitrogen as the annular cavity of the positioning sleeve 63, the spring reset rod 414 plays the role of pushing the reset pad 4162 to reset the buffer ring 416 after the spot welding fixing table 6 exits, and at this time, the air port two 417 and the air port one 415 are misaligned, the nitrogen filling channel is closed; according to the embodiment, every time the spot welding position is replaced, the positioning sleeve 63 will cooperate with the positioning sleeve 412 and the positioning hole 411 corresponding to the position to produce the positioning effect and establish a new nitrogen filling channel, so that the quality of spot welding is improved.

[0045] Embodiment three

[0046] Please refer to Figures 1 to 20 , in order to make the shielding cover and the bullet workpiece installation in place, on the basis of example two, the embodiment also proposes that the inner side of the shielding cover spot welding die 4 is vertically symmetrical slidingly installed with a vertical positioning frame 43, one side of the vertical positioning frame 43 is slidingly installed with a pressing plate 431, an adjusting bolt 432 is arranged above the pressing plate 431, the adjusting bolt 432 is rotationally installed in the middle of the vertical positioning frame 43, a vertical spot welding groove 4311 is formed in the side wall of the pressing plate 431, the inner side of the shielding cover spot welding die 4 is transversely symmetrical slidingly installed with a transverse positioning frame 44, a transverse spot welding groove 441 is formed in the side wall of the transverse positioning frame 44, and a sliding groove matched with the vertical positioning frame 43 is formed in the side wall of the transverse positioning frame 44; in this embodiment, the vertical positioning frame 43 mainly serves to clamp and position the shielding cover and the bullet workpiece from the vertical two sides, the transverse positioning frame 44 mainly serves to clamp and position the workpiece from the transverse two sides, the side wall of the shielding cover spot welding die 4 is rotationally installed with a horizontal double-headed threaded rod for adjusting the relative movement of the vertical positioning frame 43 and a vertical double-headed threaded rod for adjusting the relative movement of the transverse positioning frame 44, when installing the shielding cover and the bullet, the shielding cover spot welding die 4 needs to be taken down and placed flat, the side with the adjusting bolt 432 needs to be ensured to face upwards, the spot welding positioning cover plate 41 on one side of the adjusting bolt 432 needs to be taken down and disassembled, the position of the transverse positioning frame 44 is adjusted to place the shielding cover on the transverse positioning frame 44, then the side short bullet piece and the long bullet piece are placed in turn, the vertical positioning frame 43 is adjusted to clamp and position the shielding cover as a whole from both sides, the adjusting bolt 432 is adjusted to make the pressing plate 431 press the bullet piece, the precise installation of the workpiece is completed, finally, after the spot welding positioning cover plate 41 is installed and reset, the whole is installed on the spot welding die installation platform 21 to make the spot welding die fixing frame assembly 22 position the shielding cover spot welding die 4, the installation of the workpiece is completed, and the transverse spot welding groove 441 and the vertical spot welding groove 4311 respectively serve to position the shielding cover and the bullet spot welding surface area.

[0047] Example four

[0048] Please refer to Figures 1 to 20 , on the basis of example three, the embodiment also proposes a use method of an automatic spot welding equipment for shielding cover bullet pieces, including the following steps:

[0049] Step one, install the shielding cover and the pin, take the shielding cover spot welding die 4 from the spot welding die installation platform 21, make sure the side with the adjusting bolt 432 is up, take off the spot welding positioning cover plate 41 on the side of the adjusting bolt 432, adjust the position of the horizontal positioning frame 44, place the shielding cover on the horizontal positioning frame 44, then place the side short pin and the long pin, adjust the vertical positioning frame 43 to clamp and position the shielding cover from both sides, adjust the adjusting bolt 432 to make the pressing plate 431 press the pin, finally install the spot welding positioning cover plate 41, complete the installation of the workpiece;

[0050] Step two, spot welding, after the telescopic fixed rod 5 pushes the positioning sleeve 63 into the positioning hole 411, the nitrogen injection pipe 632 at the front end of the positioning sleeve 63 is inserted into the inside of the positioning sleeve 412, the nitrogen filling channel is established, as the telescopic fixed rod 5 continues to advance, the spot welding fixed table 6 extrudes the spot welding positioning cover plate 41, the spot welding positioning cover plate 41 moves inward, the insulating column 4161 at one end of the buffer ring 416 contacts the surface of the workpiece to press the spot welding area, then the buffer ring 416 retracts into the inside of the positioning sleeve 412, the front end of the positioning sleeve 412 contacts the surface of the workpiece, the air port two 417 moves to the position of the air port one 415 and coincides with the air port one 415, the nitrogen filling channel is opened, the pressure gasket 4163 contacts the pressure sensor 631 to generate a pressure signal, at this time the telescopic fixed rod 5 stops advancing, the electrode of the electrode assembly 62 spot welds the workpiece, after the spot welding occurs, nitrogen is injected into the spot welding area through the nitrogen filling channel between the positioning sleeve 412 and the positioning sleeve 63 for pressure maintaining and cooling, after five seconds, the spot welding fixed table 6 exits;

[0051] Step three, continuous automatic spot welding, the X-axis moving part 2 is internally provided with a driving assembly to drive the spot welding die installation platform 21 to move and position along the X-axis direction, the telescopic fixed rod 5 drives the spot welding fixed table 6 to advance and then exit after spot welding pressure maintaining, for automatic spot welding, after completing the corresponding side, the Z-axis moving part 3 drives the spot welding telescopic arm installation platform 31 to ascend and descend along the Z-axis, so that the spot welding fixed table 6 adjusts the position along the Z-axis direction, continues to spot weld the next side, until all the pins around the shielding cover are completely spot welded.

[0052] Although the embodiments of the present application have been shown and described, it is to be understood that various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the present application, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An automatic spot welding device for shielding cover springs, comprising a spot welding device (1), wherein an X-axis moving component (2) is provided inside the spot welding device (1), and Z-axis moving components (3) are provided on both sides of the X-axis moving component (2), a spot welding mold mounting platform (21) is movably mounted on the upper surface of the X-axis moving component (2), a spot welding mold fixing frame assembly (22) is provided above one side of the X-axis moving component (2), and a spot welding telescopic arm mounting platform (31) is provided on one side of the Z-axis moving component (3), characterized in that: The shielding cover spot welding die (4) is arranged above the spot welding die mounting platform (21), one side of the spot welding telescopic arm mounting platform (31) is provided with a telescopic fixing rod (5), the output end of the telescopic fixing rod (5) is fixedly installed with a spot welding fixing table (6), both sides of the shielding cover spot welding die (4) are symmetrically provided with spot welding positioning sealing plates (41), the middle part of the spot welding fixing table (6) is fixedly installed with an electrode assembly (62), and the electrode head outer side of the electrode assembly (62) is provided with a positioning sleeve (63).

2. An apparatus for automatic spot welding of the gasket of a shield according to claim 1, characterized in that: The side surface of the magnetic attraction positioning mounting frame (42) is in contact with the side surface of the spot welding positioning sealing plate (41), the side wall of the spot welding positioning sealing plate (41) is uniformly distributed with positioning holes (411), and the side surface of the spot welding positioning sealing plate (41) close to the shielding cover spot welding die (4) is uniformly distributed with positioning sleeves (412).

3. The apparatus according to claim 1, wherein: The inside of the positioning sleeve (412) is provided with a nitrogen gas inflation cavity (413), the inside side surface of the positioning sleeve (412) is fixedly installed with a spring reset rod (414), and the inside wall of the positioning sleeve (412) is provided with a gas port (415).

4. The apparatus according to claim 1, wherein: The inside of the nitrogen gas inflation cavity (413) is movably installed with a buffer ring (416), the outer surface of the buffer ring (416) is provided with a reset gasket (4162), the side surface of the reset gasket (4162) is fixedly connected with one end of the spring reset rod (414), and the outer surface of the buffer ring (416) is fixedly installed with a pressure gasket (4163). The inside of the positioning sleeve (63) is provided with an annular cavity, one end of the inner wall of the positioning sleeve (63) is fixedly installed with a nitrogen gas injection pipe (632), and the annular cavity of the positioning sleeve (63) is fixedly installed with a pressure sensor (631). The inside wall of the buffer ring (416) is provided with a gas port (417), and the outer side surface of the buffer ring (416) is fixedly installed with an insulating column (4161). The side wall of the positioning sleeve (412) is provided with a positioning insertion hole matched with the nitrogen gas injection pipe (632) and the pressure sensor (631), and the position of the pressure sensor (631) corresponds to the position of the pressure gasket (4163). The outside of the positioning sleeve (63) is provided with a nitrogen gas connecting pipe (61), the nitrogen gas connecting pipe (61) is fixedly installed on the side surface of the spot welding fixing table (6), and the inside branch pipe of the nitrogen gas connecting pipe (61) is fixedly connected with the side wall of the positioning sleeve (63).

5. The apparatus according to claim 1, wherein: The inner side of the shielding cover spot welding die (4) is vertically symmetrically slidably installed with a vertical positioning frame (43), one side of the vertical positioning frame (43) is slidably installed with a pressing plate (431), the upper side of the pressing plate (431) is provided with an adjusting bolt (432), the adjusting bolt (432) is rotatably installed in the middle of the vertical positioning frame (43), and the side wall of the pressing plate (431) is provided with a vertical spot welding groove (4311).

6. An apparatus for automatically spot welding the lugs of a shield canister as defined in claim 1, wherein: The inner side of the shielding cover spot welding die (4) is transversely symmetrically slidably installed with a transverse positioning frame (44), the side wall of the transverse positioning frame (44) is provided with a transverse spot welding groove (441), and the side wall of the transverse positioning frame (44) is provided with a sliding groove matched with the vertical positioning frame (43).

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