Continuous welding device and welding method for switchgear

Abstract

The present invention discloses a continuous welding device for switchgear and a welding method thereof, belonging to the technical field of laser welding equipment. The continuous welding device for switchgear and the welding method thereof include a fixed assembly, wherein the fixed assembly includes a fixed frame, a rotating member, and a movable frame. The movable frame is movably mounted on the fixed frame via the rotating member, and the movable frame can switch between a vertical state and a horizontal state. The present invention is provided with a chassis, a fixed assembly, a welding assembly, a drill, and a driver, so that the movable frame can switch between a vertical state and a horizontal state. Before welding, a non-rotating drill bit is used to guide and align the copper plate and the shaft sleeve. After welding, a rotating drill bit is used to re-process the inner diameter of the welding position of the copper plate and the shaft sleeve to prevent welding deformation from affecting the inner diameter size of the inner diameter. A pressure plate is used to press the assembled copper plate and the shaft sleeve tightly, so that the laser can conveniently perform continuous welding on the pin rod, the support rod, and the shaft sleeve, thereby improving welding efficiency.

Description

Technical Field

[0001] The present invention belongs to the technical field of laser welding equipment, and in particular relates to a continuous welding device for switchgear and a welding method thereof. Background Art

[0002] The main components of the disconnector are the static contact and the moving contact. The static contact consists of a copper plate bent at a right angle. One end with a hole can be connected to the busbar via screws; the other end is shorter and contacts the moving contact when the switch is closed. The contact strip consists of two copper plates with a mounting gap equal to the width of the static contact. When the switch is closed, the moving contact can rotate a certain angle around the rotating shaft at the end, clamping the static contact between the mounting gap formed by the two copper plates.

[0003] Among them, galvanized steel sheets called magnetic locks are installed at the ends of the two copper plates. When current flows in the same direction, especially when a short-circuit fault current flows through the copper plates, the mutual attraction force generated by the magnetization of the magnetic locks increases the contact pressure of the contacts, and a mutually attractive electromotive force is generated between them, which increases the contact pressure and improves the contact reliability of the static and moving contacts, trying to maintain a relatively intact conductive path to avoid further deterioration of the situation and gain valuable action time for the relay protection device and the circuit breaker.

[0004] In actual production, the two copper plates of the moving contact need to be welded together. During welding, a shaft sleeve will be welded on one end of the copper plate so that the shaft of the subsequent disconnector can be driven to rotate. A galvanized steel sheet will be welded on the end of the copper plate away from the shaft sleeve to act as a magnetic lock. A pin rod is welded in the middle of the copper plate to ensure that the distance between the two copper plates is stable. In actual welding processing, after the magnetic lock is welded, the shaft sleeve and the pin rod are welded to the copper plate in turn. The welding is interrupted because new parts need to be installed continuously. Before each welding, it needs to be flipped so that the welding surface faces up and fixed. The steps are cumbersome, and multiple positioning will also lead to poor welding efficiency. In view of this, a continuous welding device and a welding method for switchgear are provided. Summary of the Invention

[0005] The technical problem to be solved by the present invention is to overcome the disadvantages of the above-mentioned prior art and provide a continuous welding device for switchgear and a welding method thereof.

[0006] The technical solutions adopted to solve the above technical problems are:

[0007] A continuous welding device for switchgear and a welding method thereof, comprising:

[0008] A chassis, wherein the chassis provides a semi-enclosed space with a safety door, and a safety component is installed at the opening of the semi-enclosed space;

[0009] A fixed assembly, comprising a fixed frame, a rotating member, and a movable frame, wherein the movable frame is movably mounted on the fixed frame via the rotating member, the movable frame being capable of switching between a vertical state and a horizontal state, and a pressure plate being hingedly mounted on one end of the movable frame away from the rotating member;

[0010] The movable contact is crimped between the top surface of the movable frame and the bottom surface of the pressure plate. The movable contact includes two copper plates. A shaft sleeve and a magnetic lock are installed at both ends of the two copper plates. The magnetic lock is inserted through the copper plate through a support rod. The axis of the shaft sleeve is arranged perpendicular to the top end surface of the movable frame. The two copper plates are located at the shaft sleeve to form a receiving hole.

[0011] a welding assembly, the welding assembly comprising a laser, the laser generating a welding laser beam;

[0012] a drill that provides a rotational driving force for the drill bit;

[0013] A driver is provided, wherein the driver can drive the laser to move to the position directly above the support rod and the sleeve when the fixed component is in a horizontal state, and the driver can drive the drill bit to be inserted into the receiving hole when the fixed component is in a vertical state.

[0014] Before welding, the moving frame is in a vertical state, and the magnetic lock is installed on the ends of the two copper plates. The two copper plates and the shaft sleeve are placed on the outside of the non-rotating drill bit. At this time, the drill bit plays a guiding and alignment role. Finally, the assembled copper plates and shaft sleeves are pressed tightly with a pressure plate.

[0015] During welding, the driver drives the drill and the drill bit to move horizontally away from the moving contact, the rotating part rotates the moving frame 90 degrees to a horizontal state, and the driver drives the laser to approach the support rod and the sleeve in turn for heating and welding;

[0016] After welding, the movable frame is in a vertical state, and the driver drives the drill and the drill bit to move horizontally to align with the receiving hole. The rotating drill bit cleans the edge deformation caused by welding, making the inner diameter of the sleeve and the receiving hole smooth and consistent, which facilitates the subsequent assembly work to proceed smoothly.

[0017] Furthermore, the movable frame is provided with two stoppers one and two stoppers two on the side facing the pressure plate, and an accommodation gap is formed between the two stoppers one and the two stoppers two for the horizontal placement of the movable contact. A liner is provided at the accommodation gap facing the pressure plate, and the movable frame is provided with a bracket at the free end of the pressure plate.

[0018] Through the above technical solution, in order to ensure the accurate position of the moving contact, before the pressure plate clamps the moving contact, a torsion spring shaft is used to hinge the pressure plate and the moving frame. The pressure plate will avoid the positions of block one and block two, which is convenient for placing the copper plate of the moving contact. During installation, the moving contact is placed between the two block ones and the two block twos, and the moving contact is pressed by the liner. At this time, the bracket is overlapped on the free end of the pressure plate to ensure the stable position of the moving contact and prevent displacement in subsequent processing.

[0019] Furthermore, the fixing assembly also includes a compensating member, an end block is installed at one end of the movable frame, and the compensating member is installed at the end of the movable frame away from the end block. The compensating member can fill the gap between the two magnetic locks.

[0020] Through the above technical solution, in order to ensure the stable position of the magnetic lock during welding, one end of the copper plate with the sleeve installed is pressed against the end block. When the copper plate is under pressure and in close contact, the compensation part is inserted between the two magnetic locks, so that both ends of the copper plate can be supported and will not be tilted or approached to each other, affecting the overall shape after welding. Moreover, the compensation part can press the magnetic lock and the connected copper plates against each other to avoid the support rod falling off the copper plate before welding, and ensure that the magnetic lock is in close contact with the copper plate after welding to prevent gaps from causing abnormal resistance in subsequent use or even falling off due to external force.

[0021] Furthermore, an open gap is provided between the stop block 1 and the end block, the shaft sleeve is located in the open gap, and the pressure plate is horizontally staggered with the open gap.

[0022] Through the above technical solution, when welding between the sleeve and the copper plate, a wide gap is left for the sleeve between the stop block 1 and the end block, and the pressure plate is staggered with the wide gap so that the laser can approach and perform continuous welding to obtain a circular weld. The wide gap will not cause squeezing of this section of the copper plate, ensuring that the copper plate can be smoothly removed after thermal expansion. In addition, the wide gap facilitates airflow to pass through, so as to quickly cool the sleeve and the copper plate after welding.

[0023] Furthermore, the moving contact also includes a pin rod, and the pressure plate is provided with an avoidance opening corresponding to the position of the pin rod, and the pin rod is located in a spaced position between the first stopper and the second stopper.

[0024] Through the above technical solution, the pin rod strengthens the structure of the middle section of the copper plate to ensure that the spacing between the two copper plates is consistent. At the same time, the pin rod and the copper plate are also welded by laser. Therefore, an avoidance opening is opened in the middle of the pressure plate to ensure that the laser emitted by the laser above can directly irradiate the pin rod position without affecting the pressure plate's pressing of the moving contact. In addition, block one and block two will avoid the pin rod position. When the pin rod and the copper plate position expand due to heat, they will not be stuck between block one and block two, making it impossible to remove them smoothly.

[0025] Furthermore, two linings are installed at the lowest end of the movable frame in the vertical state, and a bayonet is formed between the two linings. A positioning block that cooperates with the linings is installed at the lower part of the fixed frame. A protrusion is installed on the opposite side of the two linings, and a slot is provided on the side wall of the positioning block. When the movable frame is in the vertical state, the protrusion is snapped into the slot position.

[0026] Through the above technical solution, in order to ensure the stable position of the movable frame in the vertical state, a thrust will be generated on the movable frame when the drill bit is inserted and shaped. At this time, the two linings are clamped on both sides of the positioning block, and the position of the movable frame is locked by using the side convex head and the card groove. When squeezed by the drill bit, the position of the movable contact can be guaranteed to be stable, thereby ensuring the accurate position between the copper plate and the sleeve and the smoothness of the joint.

[0027] Furthermore, the driver also includes an X-axis linear module 1 and a Y-axis linear module, and the X-axis linear module 1 and the Y-axis linear module drive the welding assembly to move with two degrees of freedom.

[0028] Through the above technical solution, in order to realize the motion control of the welding assembly, the vertically moving X-axis linear module and the horizontally moving Y-axis linear module are used to enable the welding assembly to move up and down towards and away from the moving contact so as to move and reach the welding position. At the same time, it can be moved horizontally to the position directly above the sleeve and the magnetic lock respectively to perform welding operations on parts at different horizontal positions.

[0029] Furthermore, the driver also includes an X-axis linear module 2, which is located at the end of the Z-axis linear module 1 and the Z-axis linear module 2 away from the safety component, and the drill is installed on the X-axis linear module 2.

[0030] Through the above technical solution, in order to facilitate the drill to align the two fixed components respectively, the X-axis linear module 2 can drive the drill to move horizontally, so that the drill bit of the drill is aligned with the accommodating holes of the moving contacts on the two fixed components respectively, with a high degree of automation and precision.

[0031] Furthermore, the driver also includes a Z-axis linear module 1 and a Z-axis linear module 2 arranged side by side, and there are two fixing components, which are respectively installed on the Z-axis linear module 1 and the Z-axis linear module 2.

[0032] Through the above technical solution, the Z-axis linear module 1 and the Z-axis linear module 2 can drive the two fixed components to move horizontally so as to move closer to and away from the drill, which is convenient for the pre-assembly of the moving contact and the subsequent shaping of the accommodating hole. At the same time, when welding, the fixed components move back and forth, and can cooperate with the horizontally moving welding components to continuously weld the arc edges of the sleeve and the support rod, adapt to the circular cross-section of the sleeve and the support rod, and obtain a smooth weld.

[0033] Furthermore, the welding assembly also includes a feeder and a dust collector. The feeder provides solder vertically downward. A negative pressure pump is provided on the upper part of the dust collector, and an air suction head is provided at the lower end of the negative pressure pump.

[0034] Through the above technical solution, for parts with large dimensional deviations, in order to compensate for the abnormal gaps between parts, a feeder can be used to provide strips of solder, which can be combined with the heating of the laser to ensure a smooth and full welding surface. In order to melt the solder smoothly, flux such as rosin will be added, which will produce smoke during welding. Therefore, a dust collector with negative pressure suction capability is arranged. The smoke can be absorbed and captured in time by a vacuum pump arranged near the end of the solder, and then filtered or purified in other forms to ensure a clean and smooth surface of the workpiece.

[0035] The beneficial effects of the present invention are as follows:

[0036] (1) The present invention is provided with a chassis, a fixing assembly, a welding assembly, a drill and a driver, so that the movable frame can be switched between a vertical state and a horizontal state. Before welding, a non-rotating drill bit is used to guide and align the copper plate and the shaft sleeve. After welding, a rotating drill bit is used to re-process the inner diameter of the welding position of the copper plate and the shaft sleeve to avoid the welding deformation affecting the inner diameter size. A pressing plate is used to press the assembled copper plate and the shaft sleeve, so that the laser can be used to continuously weld the pin rod, the support rod and the shaft sleeve, thereby improving the welding efficiency.

[0037] (2) The present invention positions the moving contact by means of the setting of the fixing assembly, the stopper 1 and the stopper 2, and cooperates with the pressing of the pressure plate and the alignment of the end block to ensure the high positioning accuracy of the moving contact. After welding, the fixing assembly pre-sets an avoidance space for the position where the moving contact will expand due to heat, to avoid the moving contact being stuck between the stoppers that directly contact the side wall of the copper plate due to expansion, thereby ensuring smooth material unloading. BRIEF DESCRIPTION OF THE DRAWINGS

[0038] Figure 1 This is a first perspective structural diagram of the present invention;

[0039] Figure 2 This is a schematic diagram of the structure between the welding assembly, the drill and the fixing assembly of the present invention. Figure 1 ;

[0040] Figure 3 This is a schematic diagram of the structure between the welding assembly, the drill and the fixing assembly of the present invention. Figure 2 ;

[0041] Figure 4 is a schematic structural diagram of a welding assembly of the present invention;

[0042] Figure 5 is a schematic structural diagram of the drill and the fixing assembly of the present invention;

[0043] Figure 6 It is a schematic structural diagram of the drill of the present invention;

[0044] Figure 7 This is a schematic diagram of the state of the fixing component of the present invention Figure 1 ;

[0045] Figure 8 This is a schematic diagram of the state of the fixing component of the present invention Figure 2 ;

[0046] Figure 9 is a schematic diagram of the disassembly of the fixing assembly of the present invention;

[0047] Figure 10 It is a structural schematic diagram of the moving contact of the present invention.

[0048] Reference numerals: 1, chassis; 2, safety component; 3, fixing component; 31, fixed frame; 32, moving frame; 321, end block; 322, open gap; 323, stopper 1; 324, stopper 2; 33, rotating member; 34, pressure plate; 341, lining block; 342, avoidance; 35, bracket; 36, compensation member; 37, lining; 371, protrusion; 372, bayonet; 38, positioning block; 38 1. Card slot; 4. Moving contact; 41. Copper plate; 42. Bushing; 43. Pin; 44. Magnetic lock; 45. Support rod; 46. Accommodation hole; 5. Feeder; 6. Drill; 61. Drill bit; 7. Dust collector; 8. Laser; 9. Driver; 91. X-axis linear module 1; 92. Y-axis linear module; 93. X-axis linear module 2; 94. Z-axis linear module 1; 95. Z-axis linear module 2. DETAILED DESCRIPTION

[0049] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0050] like Figure 1 - Figure 10 As shown, this embodiment provides a continuous welding device for a switchgear and a welding method thereof, comprising:

[0051] For chassis 1, refer to Figure 1 The chassis 1 provides a semi-enclosed space with a safety door. There is an opening in front of the semi-enclosed space to facilitate the operator to take and place the moving contact 4. A safety component 2 is installed at the opening of the semi-enclosed space. The safety component 2 uses a laser grating to detect the position of the operator. When the opening of the semi-enclosed space is blocked by the operator's arm, the equipment cannot start welding, thereby ensuring the safety of the operator.

[0052] For fixing component 3, refer to Figure 3 and Figure 7 The fixed assembly 3 includes a fixed frame 31, a rotating member 33 and a movable frame 32. The rotating member 33 is a rotating shaft with a stepping motor. The rotating shaft is rotatably connected to the fixed frame 31. The fixed frame 31 is fixedly connected to the movable frame 32. When the stepping motor is working, it can drive the movable frame 32 to rotate on the fixed frame 31, so that the movable frame 32 can switch between a vertical state and a horizontal state. A pressure plate 34 is hingedly installed at one end of the movable frame 32 away from the rotating member 33. The moving contact 4 will be pressed and fixed between the movable frame 32 and the pressure plate 34 for subsequent continuous welding.

[0053] Regarding the moving contact 4, refer to Figure 10 The moving contact 4 is crimped between the top surface of the moving frame 32 and the bottom surface of the pressure plate 34 for welding and shaping. The moving contact 4 includes two copper plates 41. The two copper plates 41 adopt a copper plate structure. A shaft sleeve 42 and a magnetic lock 44 are installed at both ends of the two copper plates 41. The shaft sleeve 42 is used to pass through the connecting shaft so as to be installed on the driving device in the disconnector. One end of the magnetic lock 44 is driven to overlap or disengage with the static contact. The magnetic lock 44 is inserted through the copper plate 41 through the support rod 45. The support rod 45 increases the space between the magnetic lock 44 and the copper plate 41. The contact area and firmness are improved, the resistance between the magnetic lock 44 and the copper plate 41 is reduced, and the magnetic lock 44 can be easily welded and fixed from the outside of the copper plate 41. The axis of the shaft sleeve 42 is perpendicular to the top end surface of the movable frame 32. When the movable frame 32 is in a horizontal state, the shaft sleeve 42 and the support rod 45 can be directly welded from the top, reducing the difficulty of continuous welding. The two copper plates 41 are located at the shaft sleeve 42 to form an accommodating hole 46. The outer diameter of the end of the shaft sleeve 42 is reduced to form a stepped ring groove, which is embedded in the accommodating hole 46 to facilitate subsequent welding.

[0054] For welding components, refer to Figure 4 , the welding assembly includes a laser 8, which generates a welding laser beam to heat and weld the position where the sleeve 42 and the support rod 45 are installed on the copper plate 41;

[0055] For drill 6, refer to Figure 3 and Figure 5 The drill 6 provides a rotational driving force for the drill bit 61, and the drill bit 61 can rotate to process the inner diameter of the sleeve 42 to ensure that the inner diameter of the sleeve 42 after welding meets the use requirements;

[0056] For driver 9, refer to Figure 2 、 Figure 4 and Figure 5 The driver 9 can drive the laser 8 to move to the position directly above the support rod 45 and the sleeve 42 when the fixing component 3 is in a horizontal state, and the driver 9 can drive the drill bit 61 to be inserted into the receiving hole 46 when the fixing component 3 is in a vertical state.

[0057] The working principle of this embodiment is as follows:

[0058] Before welding, refer to Figure 7 , the rotating member 33 rotates the movable frame 32 to a vertical state, and from the opening position of the semi-enclosed space, the copper plates 41 with magnetic locks 44 installed on both ends are placed on the movable frame 32 position, and the two copper plates 41 and the shaft sleeve 42 in a dispersed state are sleeved on the outside of the non-rotating drill bit 61. At this time, the drill bit 61 plays a guiding and alignment role, and drives the copper plates 41 and the shaft sleeve 42 to move to the initial welding position (the position where the end of the copper plate 41 abuts the end block 321) through the drill bit 61. Finally, the pressing plate 34 and the movable frame 32 are locked together to press the assembled copper plates 41 and the shaft sleeve 42 tightly.

[0059] When welding, refer to Figure 8 The safety component 2 detects that the operator has left the semi-enclosed space, and the driver 9 drives the drill 6 and the drill bit 61 to move horizontally away from the movable contact 4. The rotating member 33 rotates the movable frame 32 90 degrees to a horizontal state and uses the built-in shaft lock to stabilize the position of the movable frame 32. The driver 9 drives the laser 8 to approach the support rod 45 and the sleeve 42 in turn, and performs continuous heating and welding from the top;

[0060] After welding, please refer to Figure 7 The rotating member 33 makes the movable frame 32 vertical, and the driver 9 drives the drill 6 and the drill bit 61 to translate and align with the accommodating hole 46. The drill bit 61 is gradually inserted into the accommodating hole 46. The rotating drill bit 61 cleans the inner diameter deformation of the copper plate 41 and the sleeve 42 caused by welding, making the inner diameters of the sleeve 42 and the accommodating hole 46 smooth and consistent, which facilitates the subsequent assembly work to proceed smoothly.

[0061] In a further embodiment, in order to ensure the accurate position of the moving contact 4, refer to Figure 7 、 Figure 8 and Figure 9 The locking cam 35 is secured to the cam 34 by means of the latch 32 which is then engaged with the latch 33 and the engagement cam 33 of the locking cam 33. The locking cam 35 is secured to the cam 34 by means of the latch 32 which is engaged with the latch 33. The locking cam 35 is secured to the cam 34 by means of the latch 32 which is engaged with the latch 33.

[0062] In a further embodiment, in order to ensure the stability of the position of the magnetic lock 44 during welding, refer to Figure 7 、 Figure 8 and Figure 9 The fixing assembly 3 also includes a compensation piece 36. An end block 321 is installed at one end of the moving frame 32. The compensation piece 36 is installed at the end of the moving frame 32 away from the end block 321. The compensation piece 36 can fill the gap between the two magnetic locks 44, and the end of the copper plate 41 with the shaft sleeve 42 is pressed against the end block 321. When the copper plate 41 is under pressure and in close contact, the compensation piece 36 is inserted between the two magnetic locks 44, so that both ends of the copper plate 41 can be supported, and will not be tilted and approach each other to affect the overall shape after welding. Moreover, the compensation piece 36 can press the magnetic lock 44 and the connected copper plate 41 against each other to prevent the support rod 45 from falling off from the copper plate 41 before welding, and ensure that the magnetic lock 44 is in close contact with the copper plate 41 after welding to prevent gaps from causing abnormal resistance in subsequent use or even falling off due to external force.

[0063] In a further embodiment, when welding the sleeve 42 and the copper plate 41, refer to Figure 7 、 Figure 8 and Figure 9 An open gap 322 is provided between the stopper 323 and the end block 321, and the shaft sleeve 42 is located at the open gap 322. An open gap 322 is reserved between the stopper 323 and the end block 321 for the shaft sleeve 42. The pressure plate 34 is staggered from the open gap 322 so that the laser 8 can approach and perform continuous welding to obtain an annular weld. The open gap 322 will not cause extrusion on this section of the copper plate 41, ensuring that the copper plate 41 can be smoothly removed after thermal expansion. Moreover, the pressure plate 34 is horizontally staggered from the open gap 322, and the open gap 322 facilitates airflow to pass through, so as to quickly cool down the shaft sleeve 42 and the copper plate 41 after welding.

[0064] In a further embodiment, referring to Figure 10 The moving contact 4 also includes a pin 43, which strengthens the structure of the middle section of the copper plate 41 to ensure that the spacing between the two copper plates 41 is consistent. Figure 8 and Figure 9 The pressure plate 34 is provided with an avoidance opening 342 at the position of the pin rod 43, and the pin rod 43 is located in the interval between the block 1 323 and the block 2 324. The laser 8 is also used for welding between the pin rod 43 and the copper plate 41. Therefore, the avoidance opening 342 is opened in the middle of the pressure plate 34. While not affecting the pressing of the moving contact 4 by the pressure plate 34, it ensures that the laser emitted by the laser 8 above can directly irradiate the position of the pin rod 43, and the block 1 323 and the block 2 324 will avoid the position of the pin rod 43. When the pin rod 43 and the copper plate 41 expand due to heat, they will not be stuck between the block 1 323 and the block 2 324, making it impossible to remove them smoothly.

[0065] In a further embodiment, in order to ensure the stability of the position of the movable frame 32 in the vertical state, refer to Figure 7 and Figure 8 Two linings 37 are installed at the lowest end of the movable frame 32 in the vertical state, and a bayonet 372 is formed between the two linings 37. A positioning block 38 cooperating with the lining 37 is installed at the lower part of the fixed frame 31. A convex head 371 is installed on the opposite side of the two linings 37, and a groove 381 is installed on the side wall of the positioning block 38 for engaging with the convex head 371 when the movable frame 32 is in the vertical state. When the drill bit 61 is inserted and shaped, a thrust is generated on the movable frame 32. At this time, the two linings 37 are clamped on both sides of the positioning block 38, and the convex head 371 on the side is engaged with the groove 381 to lock the position of the movable frame 32. When it is squeezed by the drill bit 61, the position of the movable contact 4 can be kept stable, thereby ensuring the accurate position and smooth joint between the copper plate 41 and the shaft sleeve 42.

[0066] In a further embodiment, in order to realize the motion control of the welding assembly, referring to Figure 3 and Figure 4 The driver 9 also includes an X-axis linear module 91 and a Y-axis linear module 92. The X-axis linear module 91 and the Y-axis linear module 92 drive the welding assembly to move with two degrees of freedom. By using the vertically moving X-axis linear module 91 and the horizontally moving Y-axis linear module 92, the welding assembly can move up and down to approach and move away from the moving contact 4 so as to move and reach the welding position. At the same time, it can move horizontally to the position directly above the sleeve 42 and the magnetic lock 44, respectively, to perform welding operations on parts at different horizontal positions.

[0067] In a further embodiment, in order to facilitate the drill 6 to align the two fixing components 3 respectively, refer to Figure 5 and Figure 6 The driver 9 also includes an X-axis linear module 2 93, which is located at the end of the Z-axis linear module 1 94 and the Z-axis linear module 2 95 away from the safety component 2. The drill 6 is installed on the X-axis linear module 2 93. The X-axis linear module 2 93 can drive the drill 6 to move horizontally, so that the drill bit 61 of the drill 6 is respectively aligned with the accommodating holes 46 of the moving contacts 4 on the two fixed components 3, with a high degree of automation and precision.

[0068] In a further embodiment, referring to Figure 5The driver 9 also includes a Z-axis linear module 1 94 and a Z-axis linear module 2 95 arranged side by side. There are two fixed components 3, the first one can be used to install unwelded loose parts, and the second one can be used to install the semi-finished products removed from the first one. Because both sides of the moving contact 4 need to be welded, after completing the welding of one side of the moving contact 4, the moving contact 4 needs to be removed and turned one hundred and eighty degrees for welding the other side. The two fixed components 3 are respectively installed on the Z-axis linear module 1 94 and the Z-axis linear module 2 95. The Z-axis linear module 1 94 and the Z-axis linear module 2 95 can drive the two fixed components 3 to move horizontally so as to approach and move away from the drill 6, thereby facilitating the pre-assembly of the moving contact 4 and the subsequent shaping of the accommodating hole 46.

[0069] Through the above technical solution, at the same time, when welding, the fixed component 3 moves back and forth, and can cooperate with the horizontally moving welding component to continuously weld the arc edges of the sleeve 42 and the support rod 45, adapting to the circular cross-section of the sleeve 42 and the support rod 45 to obtain a smooth weld.

[0070] In a further embodiment, for parts with large size deviations, in order to compensate for the abnormal gaps between parts, refer to Figure 8 The welding assembly also includes a feeder 5 and a dust collector 7. The feeder 5 provides solder vertically downward. The feeder 5 can be used to provide strips of solder, and the laser 8 is used for heating to ensure that the welding surface is smooth and full. A negative pressure pump is provided on the upper part of the dust collector 7, and an air suction head is provided at the lower end of the negative pressure pump. In order to melt the solder smoothly, flux such as rosin will be added, which will produce smoke (gasified solder particles and flux) during welding. Therefore, a dust collector 7 with negative pressure suction capability is arranged. The negative pressure pump can be used to absorb and capture the smoke in time through the air suction head arranged near the end of the solder. The dust collector 7 has a built-in filter bag or filter cotton to capture the smoke, and filter or other forms of purification are performed to ensure that the surface of the workpiece is clean and smooth. The above is only a preferred embodiment of the present invention and is not intended to limit the scope of protection of the present invention.

Claims

1. A continuous welding method for switchgear, characterized in that: include: A chassis (1), the chassis (1) providing a semi-enclosed space with a safety door, a safety component (2) being installed at an opening of the semi-enclosed space; A fixed assembly (3), the fixed assembly (3) comprising a fixed frame (31), a rotating member (33) and a movable frame (32), the movable frame (32) being movably mounted on the fixed frame (31) via the rotating member (33), the movable frame (32) being capable of switching between a vertical state and a horizontal state, and a pressure plate (34) being hingedly mounted on one end of the movable frame (32) away from the rotating member (33); A moving contact (4), the moving contact (4) being press-connected between the top surface of the moving frame (32) and the bottom surface of the pressure plate (34), the moving contact (4) comprising two copper plates (41), a shaft sleeve (42) and a magnetic lock (44) being respectively installed at both ends of the two copper plates (41), the magnetic lock (44) being connected to the copper plates (41) through a support rod (45), the axis of the shaft sleeve (42) being arranged perpendicular to the top end surface of the moving frame (32), and a receiving hole (46) being formed on the two copper plates (41) at the shaft sleeve (42); A welding assembly, the welding assembly comprising a laser (8), the laser (8) generating a welding laser beam; A drill (6) for providing a rotational driving force for a drill bit (61); A driver (9), wherein the driver (9) is capable of driving the laser (8) to move to a position directly above the support rod (45) and the shaft sleeve (42) when the fixing assembly (3) is in a horizontal state, and the driver (9) is capable of driving the drill bit (61) to be inserted into the receiving hole (46) when the fixing assembly (3) is in a vertical state; The specific steps of the continuous welding method for switchgear are as follows: S1. Before welding, the rotating member (33) rotates the movable frame (32) to a vertical state, and from the opening position of the semi-enclosed space, the copper plate (41) with magnetic locks (44) installed at both ends is placed at the movable frame (32). The two copper plates (41) and the shaft sleeve (42) in a dispersed state are sleeved onto the outside of the non-rotating drill bit (61). The drill bit (61) drives the copper plate (41) and the shaft sleeve (42) to move so that the end of the copper plate (41) abuts against the end block (321). The pressure plate (34) and the movable frame (32) are combined and locked, and the assembled copper plate (41) and the shaft sleeve (42) are pressed tightly. S2. During welding, the safety component (2) detects that the operator has left the semi-enclosed space, the driver (9) drives the drill (6) and the drill bit (61) to move horizontally away from the moving contact (4), the rotating member (33) rotates the moving frame (32) ninety degrees to a horizontal state and uses the built-in shaft lock to stabilize the position of the moving frame (32), and the driver (9) makes the laser (8) approach the support rod (45) and the sleeve (42) in turn, and performs continuous heating welding from the top; S3. After welding, the rotating member (33) makes the movable frame (32) vertical, and the driver (9) drives the drill (6) and the drill bit (61) to translate and align with the receiving hole (46). The drill bit (61) is gradually inserted into the receiving hole (46). The rotating drill bit (61) cleans the inner diameter deformation of the copper plate (41) and the shaft sleeve (42) caused by welding.

2. The continuous welding method for switchgear according to claim 1, characterized in that: Two first stoppers (323) and two second stoppers (324) are installed on the side of the movable frame (32) facing the pressure plate (34); an accommodation gap for the movable contact (4) to be placed horizontally is formed between the two first stoppers (323) and the two second stoppers (324); a lining block (341) is provided at the position of the pressure plate (34) facing the accommodation gap; and a bracket (35) is provided at the free end of the movable frame (32) located at the pressure plate (34).

3. The continuous welding method for switchgear according to claim 2, characterized in that: The fixing assembly (3) further comprises a compensating member (36), an end block (321) is mounted on one end of the movable frame (32), the compensating member (36) is mounted on the end of the movable frame (32) away from the end block (321), and the compensating member (36) is capable of filling the gap between the two magnetic locks (44).

4. The continuous welding method for switchgear according to claim 3, characterized in that: An open gap (322) is provided between the stopper (323) and the end block (321), the shaft sleeve (42) is located at the open gap (322), and the pressure plate (34) and the open gap (322) are arranged in a horizontally staggered manner.

5. The continuous welding method for switchgear according to claim 2, characterized in that: The movable contact (4) further comprises a pin rod (43); the pressure plate (34) is provided with an escape opening (342) at a position corresponding to the pin rod (43); and the pin rod (43) is located at a spacing position between the first stopper (323) and the second stopper (324).

6. The continuous welding method for switchgear according to claim 1, characterized in that: Two linings (37) are installed at the lowest end of the movable frame (32) in a vertical state, and a bayonet (372) is formed between the two linings (37). A positioning block (38) cooperating with the linings (37) is installed at the lower part of the fixed frame (31). A convex head (371) is installed on the opposite side of the two linings (37). A slot (381) is installed on the side wall of the positioning block (38) for engaging with the convex head (371) when the movable frame (32) is in a vertical state.

7. The continuous welding method for switchgear according to claim 1, characterized in that: The driver (9) further comprises an X-axis linear module (91) and a Y-axis linear module (92), wherein the X-axis linear module (91) and the Y-axis linear module (92) drive the welding assembly to move in two degrees of freedom.

8. The continuous welding method for switchgear according to claim 7, characterized in that: The driver (9) further comprises a Z-axis linear module 1 (94) and a Z-axis linear module 2 (95) arranged side by side, and two fixing assemblies (3) are provided, and the two fixing assemblies (3) are respectively mounted on the Z-axis linear module 1 (94) and the Z-axis linear module 2 (95).

9. The continuous welding method for a switchgear according to claim 8, characterized in that: The driver (9) further comprises an X-axis linear module 2 (93), wherein the X-axis linear module 2 (93) is located at an end of the Z-axis linear module 1 (94) and the Z-axis linear module 2 (95) away from the safety component (2), and the drill (6) is mounted on the X-axis linear module 2 (93).

10. The continuous welding method for switchgear according to claim 1, characterized in that: The welding assembly further comprises a feeder (5) and a dust collector (7). The feeder (5) provides solder vertically downwards. A negative pressure pump is provided on the upper part of the dust collector (7), and an air suction head is provided at the lower end of the negative pressure pump.

Images