Rotary automatic spot welding machine for microwave oven shell and electric welding method

Abstract

The invention relates to a microwave oven shell rotary type automatic spot welding machine and an electric welding method, and relates to the technical field of welding equipment.The microwave oven shell rotary type automatic spot welding machine comprises a rotating disc, a rotating motor used for driving the rotating disc to rotate is installed at the lower end of the rotating disc, and multiple limiting block sets used for limiting the position of the microwave oven shell on the rotating disc are installed on the upper end face of the rotating disc; the limiting block sets are arranged around the axis of the rotary disc at equal intervals, a positioning conductive block is arranged in the center of each limiting block set, the positioning conductive blocks penetrate through the rotary disc and are fixedly connected to the rotary disc, and the positioning conductive blocks are fixed to the rotary disc. And a welding mechanism for welding the microwave oven shell and the mounting piece on the turntable is arranged on one side of the turntable. The microwave oven shell has the effect of improving the welding work efficiency between the microwave oven shell and the mounting piece.

Description

Technical Field

[0001] The present application relates to the technical field of welding equipment, and in particular to a rotary automatic spot welding machine and a welding method for a microwave oven shell. Background Art

[0002] A microwave oven is a kitchen appliance that uses microwave radiation to heat food. It is fast and efficient, and is suitable for defrosting, reheating and cooking a variety of foods.

[0003] In the production process of microwave ovens, a mounting plate for mounting the internal motor of the microwave oven is usually welded on the outer shell of the microwave oven to produce the outer shell of the microwave oven. In the related art, the mounting plate is usually pressed on the outer shell of the microwave oven, and then the two are moved to the bottom of the welding machine, and then the two are welded by the welding machine, and then the two are taken out from the bottom of the welding machine after the welding is completed, thereby completing the welding work of the mounting plate of the outer shell of the microwave oven.

[0004] During the above process, workers need to carry both to the welding machine, and after welding is completed, workers need to take the welded product out of the welding machine, which not only increases the labor intensity of workers, but also affects the production efficiency of the microwave oven shell. Summary of the invention

[0005] To solve the above technical problems, the present invention aims to provide a microwave oven shell rotary automatic spot welding machine and a welding method to solve the technical problem of low efficiency in welding the existing microwave oven shell and the mounting plate.

[0006] First aspect To achieve the above-mentioned purpose, the present invention provides a rotary automatic spot welding machine for a microwave oven shell, comprising a turntable, a rotating motor for driving the turntable to rotate is installed at the lower end of the turntable, a plurality of limit block groups for limiting the position of the microwave oven shell on the turntable are installed on the upper end surface of the turntable, and the plurality of limit block groups are equidistantly arranged around the axis of the turntable, a positioning conductive block is provided at the center of the limit block group, the positioning conductive block is passed through and fixedly connected to the turntable, the positioning conductive block is fixed to the turntable, and a welding mechanism for welding the microwave oven shell and the mounting plate on the turntable is provided on one side of the turntable.

[0007] By adopting the above technical scheme, a plurality of microwave oven shells can be placed in the limit block group, and then the mounting plate to be welded can be placed at the welding position of the microwave oven shell. Then, by controlling the rotating motor, the rotating motor drives the turntable to rotate, so that the microwave oven shells on the turntable are placed at the welding position of the welding mechanism in turn, and the microwave oven shells and the mounting plate are welded by the welding mechanism, thereby eliminating the process of workers carrying the microwave oven shells and the mounting plate to the welding mechanism, which not only reduces the labor intensity of the workers, but also improves the welding efficiency of the microwave oven shell and the mounting plate.

[0008] Optionally, the turntable is made of insulating material, the welding mechanism includes a welding bracket and a welding machine control cabinet, an upper cylinder is installed on the welding bracket, the telescopic end of the upper cylinder is fixedly connected to an upper electrode block, the upper electrode block is placed directly above the positioning conductive block, a lower electrode block is provided under the turntable, the lower electrode block is placed directly below the positioning conductive block, the upper electrode block and the lower electrode block are both electrically connected to the welding machine control cabinet, and the welding mechanism also includes a lifting assembly for driving the lower electrode block to move upward and abut against the positioning conductive block.

[0009] By adopting the above technical scheme, the upper electrode block can be driven to move up and down by the upper cylinder. Therefore, when the microwave oven shell and the mounting plate are placed directly below the upper electrode block, the upper cylinder drives the upper electrode block to move downward and abut against the mounting plate. At the same time, the lifting assembly drives the upper electrode block to move upward and abut against the lower end of the positioning conductive block. Subsequently, through the welding control cabinet, the current passes through the upper electrode block to weld the mounting plate. At the same time, the current passes through the positioning conductive block and the lower electrode block to form a circuit with the upper electrode block.

[0010] Optionally, the lifting assembly includes a lifting cylinder and a lifting support frame, the extension and retraction direction of the lifting cylinder is parallel to the end face of the turntable, the end of the lifting cylinder is fixedly connected to a lifting block, the upper end of the lifting block is set as an inclined surface, the lower electrode block is slidably connected to the lifting support frame, the lower end of the lower electrode block is fixedly connected to an abutment frame, the abutment frame abuts against the inclined surface of the lifting block, and when the lifting cylinder is extended, the abutment frame and the lower electrode block rise and make the lower electrode block abut against the lower end of the positioning conductive block.

[0011] By adopting the above technical solution, the lifting cylinder can be controlled to extend so that the lifting cylinder drives the lifting block to move, causing the abutment frame to rise, thereby causing the lower electrode block to rise. Subsequently, when the lifting cylinder contracts, the electrode block can descend under the action of gravity.

[0012] Optionally, a pulley is rotatably connected to the lower end of the abutment frame, and the arc surface of the pulley abuts against the inclined surface of the lifting block, and the abutment frame abuts against the lifting block through the pulley.

[0013] By adopting the above technical solution, the friction between the abutment block and the abutment frame can be reduced, which makes it easier for the abutment frame to lift and also protects the lifting block.

[0014] Optionally, a cooling hole is opened on the upper electrode block, a cooling insulating tube is passed through the cooling hole, and a water supply component for supplying water to the cooling insulating tube is provided on one side of the turntable.

[0015] By adopting the above technical solution, cold water can be transported into the cooling insulation pipe through the water supply component, thereby cooling the upper electrode block and reducing the impact of high temperature on the upper electrode block during the welding process.

[0016] Optionally, the water supply assembly includes a water tank arranged on one side of the turntable, a water pump being provided in the water tank, a water supply pipe being fixedly connected to and connected to the water pump, an end of the water supply pipe away from the water pump being fixedly connected to and connected to the cooling insulating pipe, an end of the cooling insulating pipe away from the water supply pipe being fixedly connected to and connected to a drain pipe, and the other end of the drain pipe being placed in the water tank.

[0017] By adopting the above technical solution, cold water can be transported to the cooling insulation pipe through the water pump and the drain pipe. After passing through the cooling insulation pipe, the cold water returns to the water tank through the drain pipe, thereby completing the cold water cooling cycle.

[0018] Optionally, a feed conveyor belt and a discharge conveyor belt are provided on one side of the turntable, and the feed conveyor belt and the discharge conveyor belt are provided with moving components for moving the microwave oven shell onto the turntable and for moving the microwave oven shell on the turntable onto the discharge conveyor belt.

[0019] By adopting the above technical solution, the microwave oven shell on the feeding conveyor belt can be moved to the turntable through the moving component, and the microwave oven shell on the turntable can be moved to the discharging conveyor belt.

[0020] Optionally, the moving assembly includes a mounting block mounted on the upper end of the turntable, the mounting block being provided with a feed cavity and a discharge cavity, the lower end of the mounting block being slidably connected with a feed plate and a discharge plate, a plurality of feed cross bars being fixedly connected in the feed cavity, a plurality of the feed cross bars being provided with the same feed block, the feed plate being fixedly connected to the lower end of the feed block, an end of the feed cross bar away from the feed conveyor belt being rotatably connected with a feed oblique bar, a feed torsion spring being installed between the feed oblique bar and the feed cross bar, The end of the lower feed inclined rod away from the feed cross rod is abutted against the bottom of the feed cavity, and a first coil spring is fixedly connected to the inner wall of the feed cavity away from the feed conveyor belt. The end of the first coil spring is fixedly connected to the feed block, and the first coil spring applies a force to the feed block away from the feed conveyor belt; a plurality of discharging cross rods are fixedly connected in the discharging cavity, and a plurality of discharging cross rods are provided with discharging blocks, and the discharging plate is fixedly connected to the lower end of the discharging block, and the discharging cross rod is close to one end of the discharging conveyor belt. A discharging inclined rod is rotatably connected, and a discharging torsion spring is installed between the discharging inclined rod and the discharging cross rod. Under the action of the discharging torsion spring, one end of the feeding inclined rod away from the discharging cross rod abuts against the bottom of the discharging cavity, and a second coil spring is fixedly connected to the inner wall of the discharging cavity away from the discharging conveyor belt. The end of the second coil spring is fixedly connected to the discharging block, and the second coil spring applies a force to the discharging block away from the discharging conveyor belt. A driving cavity is opened in the mounting block, and the driving cavity is connected to the feeding cavity and The discharging cavities are all connected, an arc block is slidably connected in the driving cavity, a driving rack is fixedly connected to the inner arc surface of the arc block, a driving gear is meshed on one side of the driving rack, a driving motor for driving the driving gear to rotate is provided on the mounting block, the opening direction of the driving cavity is adapted to the moving track of the arc block driven by the driving gear, a first connecting rope is fixedly connected between one end of the arc block and the feeding block, and a second connecting rope is fixedly connected between the other end of the arc block and the discharging block.

[0021] By adopting the above technical solution, the driving motor can be controlled to rotate, so that the driving motor drives the arc block to move through the gear and the driving rack, and the arc block can be reciprocated by controlling the driving motor.

[0022] When the arc block moves toward the feeding conveyor, the first coil spring will contract, and then the feeding block will move away from the turntable. At this time, the feeding plate will move the microwave oven shell on the feeding conveyor toward the turntable, and finally place the microwave oven shell on the turntable. In this process, the feeding block moves below the feeding cross bar. At the same time, the arc block drives the discharging block to move away from the turntable through the second connecting rope, so that the discharging plate abuts against the microwave oven shell on the turntable and drives the microwave oven shell to move toward the discharging conveyor, and finally the discharging block abuts against the discharging inclined rod, so that the discharging inclined rod opens and allows the discharging conveyor to pass through the discharging inclined rod. In this process, the feeding block moves below the feeding cross bar. Therefore, the microwave oven shell can be added or removed from the turntable at the same time.

[0023] When resetting, the arc block can be moved to the side of the discharge conveyor belt by changing the rotation direction of the driving motor. At this time, the feed block and the discharge block will slide along the feed inclined rod and the discharge inclined rod to the upper end of the feed cross bar and the upper end of the discharge inclined rod respectively, thereby lifting the feed plate and the discharge plate to pass over the microwave oven shell below them.

[0024] Second aspect The microwave oven shell rotary automatic electric welding method uses the above-mentioned microwave oven shell rotary automatic spot welding machine, comprising the following steps: S1. Place multiple microwave oven casings in the limit block group, and then place the required welding mounting plate at the welding position of the microwave oven casing; S2. Start the turntable so that the microwave oven casing on the turntable is placed on the welding part of the welding mechanism in sequence; S3. Control the welding mechanism to weld the microwave oven housing and the mounting plate, and remove the two from the turntable after welding.

[0025] In summary, the present application includes at least one of the following beneficial technical effects: The microwave oven shell and the mounting plate are welded by the welding mechanism, thereby eliminating the process of workers carrying the microwave oven shell and the mounting plate to the welding mechanism, which not only reduces the labor intensity of the workers, but also improves the welding efficiency of the microwave oven shell and the mounting plate; The lifting cylinder can be controlled to extend so that the lifting cylinder drives the lifting block to move, so that the abutment frame rises, and then the lower electrode block rises. Then, when the cylinder contracts, the lower electrode block can be lowered under the action of gravity. Cold water can be delivered to the cooling insulation pipe through the water supply assembly, thereby cooling the upper electrode block and reducing the impact of high temperature on the upper electrode block during the welding process. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a schematic diagram of the overall structure of Example 1 of the present application; Figure 2 is a schematic structural diagram of the lower electrode block of Example 1 of the present application; Figure 3 is a schematic structural diagram of a cooling insulation tube according to Example 1 of the present application; Figure 4 It is a schematic diagram of the overall structure of Example 2 of the present application; Figure 5 It is a schematic structural diagram of the discharge plate of Example 2 of the present application; Figure 6 This is a schematic structural diagram of the rear feed cross bar with a hidden mounting block in Example 2 of the present application; Figure 7 It is a schematic diagram of the structure of the driving cavity of Example 2 of the present application.

[0027] Explanation of reference numerals: 1. turntable; 2. rotating motor; 3. limit block group; 4. positioning conductive block; 5. welding mechanism; 51. welding bracket; 52. welding machine control cabinet; 53. upper cylinder; 54. upper electrode block; 541. cooling hole; 542. cooling insulation tube; 55. lower electrode block; 56. lifting assembly; 561. lifting cylinder; 562. lifting support frame; 563. lifting block; 564. abutment frame; 565. pulley; 6. water supply assembly; 61. water tank; 62. water pump; 63. water supply pipe; 64. drainage pipe; 7. feeding conveyor belt; 8. discharging conveyor belt; 9. moving assembly; 91. mounting block; 92. Feed plate; 93. Discharge plate; 94. Feed cross bar; 95. Feed oblique bar; 96. Feed block; 97. First coil spring; 98. Discharge cross bar; 99. Discharge oblique bar; 910. Feed torsion spring; 911. First mounting rod; 912. Second mounting rod; 913. Discharge block; 914. Discharge torsion spring; 915. Second coil spring; 916. Arc block; 917. Drive rack; 918. Drive motor; 919. Drive gear; 920. First connecting rope; 921. Second connecting rope; 922. Feed cavity; 923. Discharge cavity; 924. Drive cavity; 9241. Limiting groove. DETAILED DESCRIPTION

[0028] The following is combined with Figure 1 -Attached Figure 7 This application is described in further detail.

[0029] First aspect Example 1

[0030] Microwave oven shell rotary automatic spot welding machine, reference Figure 1 and Figure 2The invention comprises a turntable 1 arranged above the ground, and the turntable 1 is arranged in a disc shape. A rotating motor 2 for driving the turntable 1 to rotate is installed at the lower end of the turntable 1. The rotating motor 2 is installed on the ground, and the output shaft of the rotating motor 2 is coaxially arranged and fixedly connected with the turntable 1.

[0031] A plurality of limit block groups 3 for limiting the position of the microwave oven housing on the turntable 1 are installed on the upper end surface of the turntable 1, wherein each limit block group 3 is composed of a plurality of limit blocks fixedly connected to the turntable 1. The plurality of limit block groups 3 are arranged equidistantly around the axis of the turntable 1, a positioning conductive block 4 is arranged in the center of the limit block group 3, and the turntable 1 is arranged to be made of an insulating material. The positioning conductive block 4 is arranged to be made of a conductive material. The positioning conductive block 4 is passed through and fixedly connected to the turntable 1, and the positioning conductive block 4 is fixed to the turntable 1. A welding mechanism 5 for welding the microwave oven housing and the mounting plate on the turntable 1 is arranged on one side of the turntable 1.

[0032] The welding mechanism 5 includes a welding bracket 51 and a welding machine control cabinet 52, and the welding control cabinet is set on the ground. The welding bracket 51 is fixed on the welding machine control cabinet 52 and an upper cylinder 53 is installed on the welding bracket 51, the telescopic end of the upper cylinder 53 is set downward and the end of the telescopic end of the upper cylinder 53 is fixedly connected with an upper electrode block 54, the upper electrode block 54 is placed just above the positioning conductive block 4, and a lower electrode block 55 is provided below the turntable 1, the lower electrode block 55 is placed just below the positioning conductive block 4, and the connecting line between the upper electrode block 54 and the lower electrode block 55 coincides with the axis of the upper cylinder 53.

[0033] The upper electrode block 54 and the lower electrode block 55 are both electrically connected to the welding machine control cabinet 52 . The welding mechanism 5 further includes a lifting assembly 56 for driving the lower electrode block 55 to move upward and abut against the positioning conductive block 4 .

[0034] The lifting assembly 56 includes a lifting cylinder 561 and a lifting support frame 562, and the lifting support frame 562 is fixedly connected to the welding machine control cabinet 52. The lifting cylinder 561 is fixedly connected to the lifting support frame 562. The telescopic direction of the lifting cylinder 561 is parallel to the end surface of the turntable 1, and the end of the lifting cylinder 561 is fixedly connected with a lifting block 563, and the upper end of the lifting block 563 is set as an inclined surface. The lower electrode block 55 is slidably connected to the lifting support frame 562, and the lifting support frame 562 is set in a door shape. The lower electrode block 55 can only slide up and down on the lifting support frame 562 in a direction perpendicular to the ground. The lower end of the lower electrode block 55 is fixedly connected to an abutment frame 564, and the lower end of the abutment frame 564 is rotatably connected to a pulley 565. The axis of the pulley 565 is parallel to the ground, and the arc surface of the pulley 565 abuts against the inclined surface of the lifting block 563. The abutment frame 564 abuts against the lifting block 563 through the pulley 565.

[0035] Therefore, when the lifting cylinder 561 is extended, the lifting cylinder 561 drives the lifting block 563 to move, so that the inclined surface of the lifting block 563 abuts against the pulley 565, and the pulley 565 is lifted, thereby causing the abutment frame 564 to rise, and then causing the lower electrode block 55 to rise. Subsequently, when the lifting cylinder 561 contracts, the lower electrode block 55 can descend under the action of gravity.

[0036] Reference Figure 1 and Figure 3 A cooling hole 541 is provided on the upper electrode block 54 , and the cooling hole 541 is arranged in a circular shape. A cooling insulating tube 542 is passed through the cooling hole 541 . A water supply component 6 for supplying water to the cooling insulating tube 542 is provided on one side of the turntable 1 .

[0037] The water supply assembly 6 includes a water tank 61 disposed on one side of the turntable 1, and the water tank 61 is configured as a rectangular parallelepiped with an upper end open. A water pump 62 is installed in the water tank 61, and a water supply pipe 63 is fixedly connected and communicated with the water pump 62. One end of the water supply pipe 63 away from the water pump 62 is fixedly connected and communicated with one end of the cooling insulation pipe 542, and one end of the cooling insulation pipe 542 away from the water supply pipe 63 is fixedly connected and communicated with a drain pipe 64, and the other end of the drain pipe 64 is placed in the water tank 61.

[0038] Thus, cold water can be transported into the cooling insulating tube 542 through the water pump 62 and the drain pipe 64, and the upper electrode block 54 is cooled through the cooling insulating tube 542. Then, the cold water passes through the cooling insulating tube 542 and then returns to the water tank 61 through the drain pipe 64, thereby completing the cold water cooling cycle of the upper electrode block 54.

[0039] The implementation principle of Example 1 is as follows: a plurality of microwave oven shells are sequentially placed in the limit block group 3, and the mounting sheet to be welded is placed at the welding position of the microwave oven shell, and the mounting sheet is placed just above the positioning conductive block 4. Then, the rotating motor 2 is controlled to drive the turntable 1 to rotate, so that the microwave oven shells on the turntable 1 are sequentially placed at the welding position of the welding mechanism 5, and the microwave oven shells and the mounting sheet are welded by the welding mechanism 5. Example 2

[0040] The difference from Example 1 is: Figure 4 , Figure 5 and Figure 6 A feeding conveyor belt 7 and a discharging conveyor belt 8 are provided on one side of the turntable 1. The feeding conveyor belt 7 and the discharging conveyor belt 8 are both erected on the ground. The upper end surfaces of the feeding conveyor belt 7 and the discharging conveyor belt 8 are parallel to the upper end surface of the turntable 1. The feeding conveyor belt 7 and the discharging conveyor belt 8 are provided with the same moving component 9.

[0041] Reference Figure 4 , Figure 5 and Figure 7 The moving component 9 includes a mounting block 91 mounted on the upper end of the turntable 1. The mounting block 91 is arranged in a rectangular shape. A feed cavity 922 and a discharge cavity 923 are provided in the mounting block 91. The feed cavity 922 is placed directly above the feed conveyor belt 7, and the discharge cavity 923 is placed directly above the discharge conveyor belt 8.

[0042] Reference Figure 4 , Figure 5 and Figure 6 The lower end of the mounting block 91 is slidably connected with a feed plate 92 and a discharge plate 93, wherein a plurality of feed cross bars 94 are fixedly connected in the feed cavity 922. In this embodiment, two feed cross bars 94 are provided, and the two feed cross bars 94 are located at the same height and arranged along the length direction of the feed cavity 922. There is a certain gap between the two feed cross bars 94, and the same feed block 96 is arranged on the two feed cross bars 94. The feed plate 92 is fixedly connected to the lower end of the feed block 96. The end of the feed cross bar 94 away from the feed conveyor belt 7 is rotatably connected with a feed inclined rod 95. A feed torsion spring 910 is installed between the feed inclined rod 95 and the feed cross bar 94. Under the action of the feed torsion spring 910, the end of the feed inclined rod 95 away from the feed cross bar 94 abuts against the bottom of the feed cavity 922. The feed block 96 can slide on the feed cross bar 94 and the feed inclined rod 95.

[0043] A first mounting rod 911 is fixedly connected to the inner wall of the feed cavity 922 away from the feed conveyor belt 7, and a first coil spring 97 is installed on the first mounting rod 911. The end of the first coil spring 97 is fixedly connected to the feed block 96, and the first coil spring 97 applies a force to the feed block 96 away from the feed conveyor belt 7.

[0044] A plurality of discharging cross bars 98 are fixedly connected in the discharging cavity 923. In this embodiment, two discharging cross bars 98 are provided. The two discharging cross bars 98 are located at the same height and are arranged along the length direction of the discharging cavity 923. There is a certain gap between the two discharging cross bars 98. The same discharging block 913 is arranged on the two discharging cross bars 98, and the discharging plate 93 is fixedly connected to the lower end of the discharging block 913. The end of the discharging cross bar 98 close to the discharging conveyor belt 8 is rotatably connected to the discharging inclined rod 99, and a discharging torsion spring 914 is installed between the discharging inclined rod 99 and the discharging cross bar 98. Under the action of the discharging torsion spring 914, the end of the feeding inclined rod 95 away from the discharging cross bar 98 abuts against the bottom of the discharging cavity 923. A second coil spring 915 is fixedly connected to the inner wall of the discharge cavity 923 away from the discharge conveyor belt 8. The end of the second coil spring 915 is fixedly connected to the discharge block 913. The second coil spring 915 applies a force to the discharge block 913 away from the discharge conveyor belt 8.

[0045] Reference Figure 4 , Figure 6 and Figure 7A driving cavity 924 is provided in the mounting block 91, and an arc block 916 is slidably connected in the driving cavity 924. At the same time, in order to limit the sliding direction of the arc block 916, a limiting groove 9241 for limiting the sliding position of the arc block 916 is provided on the inner wall of the driving cavity 924. A driving rack 917 is fixedly connected to the inner arc surface of the arc block 916, and the driving rack 917 is arranged along the length direction of the arc block 916. A driving gear 919 is meshed on one side of the inner arc surface of the driving rack 917. A driving motor 918 for driving the driving gear 919 to rotate is provided on the mounting block 91. The driving motor 918 is set as a servo motor, and the output shaft of the driving motor 918 is coaxially arranged and fixedly connected with the driving gear 919. The opening direction of the driving cavity 924 is adapted to the moving trajectory of the arc block 916 driven by the driving gear 919. A first connecting rope 920 is fixedly connected between one end of the arc block 916 and the feed block 96, and a second connecting rope 921 is fixedly connected between the other end of the arc block 916 and the discharge block 913. The driving cavity 924 is connected to the feed cavity 922 and the discharge cavity 923 through the first connecting rope 920 and the second connecting rope 921.

[0046] The implementation principle of Example 2 is: start the drive motor 918, so that the drive motor 918 drives the arc block 916 to move through the gear and the drive rack 917, and controls the drive motor 918 to make the arc block 916 move back and forth.

[0047] When the driving motor 918 controls the arc block 916 to reciprocate, two situations will occur. First, when the arc block 916 moves toward the side of the feeding conveyor belt 7, the first coil spring 97 will contract, and then the feeding block 96 will move away from the turntable 1. At this time, the feeding plate 92 will move the microwave oven shell on the feeding conveyor belt 7 toward the turntable 1, and finally place the microwave oven shell on the turntable 1, and in this process, the feeding block 96 will move below the feeding cross bar 94. At the same time, the arc block 916 will drive the discharging block 913 to move away from the turntable 1 through the second connecting rope 921, so that the discharging plate 93 abuts against the microwave oven shell on the turntable 1 and drives the microwave oven shell to move onto the discharging conveyor belt 8, and finally the discharging block 913 abuts against the discharging inclined rod 99, so that the discharging inclined rod 99 is opened, and the discharging conveyor belt 8 passes through the discharging inclined rod 99. In this process, the feeding block 96 moves below the feeding cross bar 94. Therefore, the microwave oven housing can be added or removed from the turntable 1 at the same time.

[0048] When resetting, the arc block 916 can be moved toward the side of the discharge conveyor belt 8 by changing the rotation direction of the driving motor 918. At this time, the feed block 96 and the discharge block 913 will slide along the feed inclined rod 95 and the discharge inclined rod 99 to the upper end of the feed cross bar 94 and the upper end of the discharge inclined rod 99 respectively, thereby lifting the feed plate 92 and the discharge plate 93 so that they pass over the microwave oven shell below them and return to the position before the arc block 916 moves to the side of the feed conveyor belt 7.

[0049] Second aspect The present invention provides a method for rotary automatic welding of a microwave oven shell, using a rotary automatic welding machine for the microwave oven shell, comprising the following steps: S1. Place multiple microwave oven casings in the stopper block group 3, and then place the required welding mounting piece at the welding position of the microwave oven casing; S2. Start the turntable 1, so that the microwave oven housing on the turntable 1 is sequentially placed at the welding position of the welding mechanism 5; S3. Control the welding mechanism 5 to weld the microwave oven housing and the mounting plate, and remove the two from the turntable 1 after welding.

[0050] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. Microwave oven shell rotary automatic spot welding machine, characterized by: The invention comprises a turntable (1), wherein a rotating motor (2) for driving the turntable (1) to rotate is installed at the lower end of the turntable (1), and a plurality of limit block groups (3) for limiting the position of a microwave oven shell on the turntable (1) are installed on the upper end surface of the turntable (1), and the plurality of limit block groups (3) are arranged equidistantly around the axis of the turntable (1), and a positioning conductive block (4) is provided at the center of the limit block group (3), and the positioning conductive block (4) is passed through and fixedly connected to the turntable (1), and the positioning conductive block (4) is fixed to the turntable (1), and a welding mechanism (5) for welding the microwave oven shell and the mounting plate on the turntable (1) is provided on one side of the turntable (1).

2. The microwave oven shell rotary automatic spot welding machine according to claim 1, characterized in that: The turntable (1) is made of insulating material. The welding mechanism (5) comprises a welding bracket (51) and a welding machine control cabinet (52). An upper cylinder (53) is mounted on the welding bracket (51). The telescopic end of the upper cylinder (53) is fixedly connected to an upper electrode block (54). The upper electrode block (54) is placed directly above the positioning conductive block (4). A lower electrode block (55) is provided below the turntable (1). The lower electrode block (55) is placed directly below the positioning conductive block (4). Both the upper electrode block (54) and the lower electrode block (55) are electrically connected to the welding machine control cabinet (52). The welding mechanism (5) further comprises a lifting assembly (56) for driving the lower electrode block (55) to move upward and abut against the positioning conductive block (4).

3. The microwave oven shell rotary automatic spot welding machine according to claim 2, characterized in that: The lifting assembly (56) comprises a lifting cylinder (561) and a lifting support frame (562), the extension direction of the lifting cylinder (561) is parallel to the end surface of the turntable (1), the end of the lifting cylinder (561) is fixedly connected to a lifting block (563), the upper end of the lifting block (563) is set as an inclined surface, the lower electrode block (55) is slidably connected to the lifting support frame (562), the lower end of the lower electrode block (55) is fixedly connected to an abutment frame (564), the abutment frame (564) abuts against the inclined surface of the lifting block (563), and when the lifting cylinder (561) is extended, the abutment frame (564) and the lower electrode block (55) rise and make the lower electrode block (55) abut against the lower end of the positioning conductive block (4).

4. The microwave oven shell rotary automatic spot welding machine according to claim 3, characterized in that: The lower end of the abutment frame (564) is rotatably connected to a pulley (565), the arc surface of the pulley (565) abuts against the inclined surface of the lifting block (563), and the abutment frame (564) abuts against the lifting block (563) via the pulley (565).

5. The microwave oven shell rotary automatic spot welding machine according to claim 4, characterized in that: The upper electrode block (54) is provided with a cooling hole (541), a cooling insulating tube (542) is passed through the cooling hole (541), and a water supply component (6) for supplying water to the cooling insulating tube (542) is provided on one side of the rotating disk (1).

6. The microwave oven shell rotary automatic spot welding machine according to claim 5, characterized in that: The water supply assembly (6) comprises a water tank (61) arranged on one side of the turntable (1), a water pump (62) being arranged in the water tank (61), a water supply pipe (63) being fixedly connected to and in communication with the water pump (62), an end of the water supply pipe (63) away from the water pump (62) being fixedly connected to and in communication with the cooling insulation pipe (542), an end of the cooling insulation pipe (542) away from the water supply pipe (63) being fixedly connected to and in communication with a drainage pipe (64), the other end of the drainage pipe (64) being placed in the water tank (61).

7. The microwave oven shell rotary automatic spot welding machine according to claim 1, characterized in that: An infeed conveyor belt (7) and an outfeed conveyor belt (8) are provided on one side of the turntable (1); and a moving assembly (9) for moving a microwave oven shell onto the turntable (1) and for moving the microwave oven shell on the turntable (1) onto the outfeed conveyor belt (8) is provided on the infeed conveyor belt (7) and the outfeed conveyor belt (8).

8. The microwave oven shell rotary automatic spot welding machine according to claim 7, characterized in that: The moving assembly (9) comprises a mounting block (91) mounted on the upper end of the turntable (1), wherein a feed cavity (922) and a discharge cavity (923) are formed in the mounting block (91), a feed plate (92) and a discharge plate (93) are slidably connected to the lower end of the mounting block (91), a plurality of feed cross bars (94) are fixedly connected in the feed cavity (922), a same feed block (96) is provided on the plurality of feed cross bars (94), the feed plate (92) is fixedly connected to the lower end of the feed block (96), and the feed cross bar (94) is rotatably connected to a feed inclined plate at one end away from the feed conveyor belt (7). A rod (95), a feed torsion spring (910) is installed between the feed inclined rod (95) and the feed cross rod (94), under the action of the feed torsion spring (910), one end of the feed inclined rod (95) away from the feed cross rod (94) abuts against the bottom of the feed cavity (922), and a first coil spring (97) is fixedly connected to the inner wall of the feed cavity (922) away from the feed conveyor belt (7), and the end of the first coil spring (97) is fixedly connected to the feed block (96), and the first coil spring (97) applies a force to the feed block (96) away from the feed conveyor belt (7);A plurality of discharging cross bars (98) are fixedly connected in the discharging cavity (923), and a discharging block (913) is provided on the plurality of discharging cross bars (98). The discharging plate (93) is fixedly connected to the lower end of the discharging block (913). One end of the discharging cross bar (98) close to the discharging conveyor belt (8) is rotatably connected to a discharging inclined rod (99). A discharging torsion spring (914) is installed between the discharging inclined rod (99) and the discharging cross bar (98). Under the action of the feed inclined rod (914), one end of the feed inclined rod (95) away from the discharge cross rod (98) abuts against the bottom of the discharge cavity (923), and a second coil spring (915) is fixedly connected to the inner wall of the discharge cavity (923) away from the discharge conveyor belt (8), and the end of the second coil spring (915) is fixedly connected to the discharge block (913), and the second coil spring (915) applies a force to the discharge block (913) away from the discharge conveyor belt (8). The mounting block (91) is provided with a driving cavity (924) in the mounting block (91), the driving cavity (924) being in communication with both the feeding cavity (922) and the discharging cavity (923), the driving cavity (924) being slidably connected with an arc block (916), the inner arc surface of the arc block (916) being fixedly connected with a driving rack (917), one side of the driving rack (917) being meshed with a driving gear (919), and the mounting block (91) being provided with a driving gear for a driving motor (918) driving the driving gear (919) to rotate, the opening direction of the driving cavity (924) being adapted to the moving trajectory of the arc block (916) driven by the driving gear (919), a first connecting rope (920) being fixedly connected between one end of the arc block (916) and the feeding block (96), and a second connecting rope (921) being fixedly connected between the other end of the arc block (916) and the discharging block (913). ; 9. A method for rotating and automatically welding a microwave oven shell, characterized in that: The microwave oven shell rotary automatic spot welding machine according to claim 1 comprises the following steps: S1. Place multiple microwave oven casings in the limit block group (3), and then place the required welding mounting plate at the welding position of the microwave oven casing; S2. Start the turntable (1), so that the microwave oven casing on the turntable (1) is sequentially placed at the welding position of the welding mechanism (5); S3. Control the welding mechanism (5) to weld the microwave oven housing and the mounting plate, and remove the two from the turntable (1) after welding.

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