An electric energy metering box production and assembly device

Abstract

The present application relates to the technical fields of metal welding, and discloses an electric energy metering box production and assembling device, which comprises an operating table, a stand is fixed on one side of the operating table, a first motor and a second motor are respectively fixed in the stand, an output shaft of the first motor is fixed with a rotating disc, a sliding frame is fixed on the surface of the rotating disc, a sliding block is slidably connected in the sliding frame, a cross adjusting frame is fixed on one side of the sliding block, and half sliding grooves are formed in the top end and the bottom end of the vertical part of the cross adjusting frame, the electric energy metering box production and assembling device forms an outer clamping and inner supporting state to the shell through the first clamping block, the second clamping block and the buckle, thereby improving the stability during the welding of the shell, and in the subsequent welding process, the cross adjusting frame and the shell are turned over through the first motor, thereby enabling each weld inside and outside the shell to be sequentially adjusted to below the welding head, thereby improving the welding efficiency and avoiding unnecessary disassembly and calibration.

Description

Technical Field

[0001] This invention relates to the field of metal welding technology, specifically to a production and assembly device for an electricity metering box. Background Technology

[0002] An electricity metering box is a collection of metering instruments and auxiliary equipment necessary for measuring electrical energy. It includes electricity meters, voltage and current transformers and their secondary circuits, electricity metering panels, cabinets, boxes, etc. The casing of an electricity metering box can be made of metal or non-metal materials. When an electricity metering box uses a metal casing, the casing usually needs to be welded during the production process to weld the various metal plates into a complete box.

[0003] During the welding and assembly process of metal energy metering boxes, adjacent metal plates usually need to be clamped and fixed to ensure that the two metal plates can be welded. A box usually needs to weld multiple metal plates, which means that the clamped metal plates need to be frequently disassembled and switched during the welding process. Each time the clamped metal plates are disassembled and switched, recalibration is required, making the welding process too cumbersome and lengthy, and requiring more manpower. Summary of the Invention

[0004] To address the shortcomings of existing technologies, this invention provides an assembly and production device for electricity metering boxes, which solves the problems mentioned in the background section.

[0005] The present invention provides the following technical solution: an electricity metering box production and assembly device, including an operating table, a support frame fixed on one side of the operating table, a first motor and a second motor fixed inside the support frame, a turntable fixed on the output shaft of the first motor, a sliding frame fixed on the surface of the turntable, and a slider slidably connected inside the sliding frame. A cross adjustment frame is fixed on one side of the slider. A semi-sliding groove is provided at the top and bottom of the vertical part of the cross adjustment frame. A first lead screw is rotatably connected inside the semi-sliding groove. A first adjustment block is threaded to the surfaces of both ends of the first lead screw. A first clamping block is fixed to the surface of the first adjustment block. The surface of the horizontal part of the cross adjustment frame is provided with a full sliding groove. A second lead screw is rotatably connected inside the full sliding groove. A second adjustment block is threaded to the surfaces of both ends of the second lead screw. A second clamping block is fixed to the surface of the second adjustment block. Both the first clamping block and the second clamping block are internally threaded with internally threaded rods, and the surface of the internally threaded rods is threaded with externally threaded tubes, with buckles rotatably connected inside the externally threaded tubes. The output shaft of the second motor is fixed with a second screw, and a movable bracket is threadedly connected to the surface of the second screw. A cylinder is fixed inside the movable bracket, and a balance plate is fixed to the cylinder through a sleeve. A welding head is fixed to the bottom of the balance plate.

[0006] Preferably, the sliding frame is internally rotatably connected to a first screw, which is threadedly connected to the slider, and the housing is held on one side of the first clamping block and the second clamping block.

[0007] Preferably, the buckle is L-shaped, and the side of the buckle that contacts the inner wall of the housing is inclined.

[0008] Preferably, the surface of the operating table is provided with a bottom groove, and a support frame is slidably connected inside the bottom groove, with the top of the support frame fixed to a movable bracket.

[0009] Preferably, a locking bolt is fixed inside the sleeve, and a nozzle is fixed at the bottom of the balance plate near the welding head.

[0010] Preferably, the balance plate has a circular groove inside near the end of the internal threaded rod, a first spring is fixed to the inner wall of the circular groove, an extension rod is fixed to one end of the first spring, the extension rod is slidably connected to the circular groove, and a mounting bracket is fixed to one end of the extension rod. The inner cavity of the mounting frame is fixed with a first elastic rope on both sides, and a T-shaped frame is fixed to the bottom of the first elastic rope. Sponges are fixed to the bottom of both sides of the horizontal part of the T-shaped frame, and scrapers are fixed to the surface of the sponges. A protective tube is fixed to the top of the T-shaped frame, a magnetic block is fixed inside the protective tube, and an electromagnet is fixed to the top of the inner cavity of the mounting frame.

[0011] Preferably, outer tubes are fixed on both sides of the bottom of the balance plate, a second spring is fixed inside the outer tubes at the bottom of the balance plate, a base plate is fixed at the bottom of the second spring, an inner tube is fixed on the surface of the base plate, and the inner tube is slidably connected to the outer tubes. Limiting rods are fixed on both sides of the base plate near the end of the internal threaded rod, and an internal sliding groove is provided on the side of the base plate near the limiting rod.

[0012] Preferably, a rotating rod is slidably connected inside the inner groove, and a second elastic rope is fixed to the end of the rotating rod away from the limiting rod. One end of the second elastic rope is fixed to the inner wall of the inner groove, and a rotating frame is fixed to the end of the rotating rod away from the second elastic rope. The rotating frame has notches on both ends of its surface, and the notches are at an angle of 90 degrees. Protective frames are fixed on both sides of the rotating frame surface. Side grooves are formed on the inner walls of both sides of the protective frames, and slidable closures are connected inside the side grooves.

[0013] Preferably, a connecting rod is fixed to the surface of the upright, and an arc-shaped bracket is fixed to the surface of the connecting rod, the arc-shaped bracket being rotatably connected to the turntable.

[0014] Compared with the prior art, the present invention has the following beneficial effects: 1. The electricity metering box production and assembly device forms an external clamping and internal support state for the shell through the first clamping block, the second clamping block and the buckle, thereby improving the stability of the shell during welding. In the subsequent welding process, the first motor drives the cross adjustment frame and the shell to rotate, so that each weld seam inside and outside the shell can be adjusted to the bottom of the welding head in sequence, thereby improving the welding efficiency and avoiding unnecessary disassembly and calibration.

[0015] 2. The electricity metering box production and assembly device, by changing the orientation of the rotating frame and the protective frame, so that when the internal weld of the shell is welded, the two sealing parts are below the weld to receive the molten pool, while when the external weld of the shell is welded, the two protective frames are attached to both sides of the external weld to continue to protect the weld and prevent the molten pool of the external weld from dripping to both sides, thereby improving the efficiency of welding and assembly of the present invention. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of the present invention; Figure 2 This is a side view of the structure of the present invention; Figure 3 This is a schematic diagram of the structure of the first motor of the present invention; Figure 4 This is a schematic diagram of the cross-shaped adjustment frame of the present invention; Figure 5 This is a schematic diagram of the structure of the first and second lead screws of the present invention; Figure 6 This is a cross-sectional view of the cross-shaped adjustment frame of the present invention; Figure 7 This is a cross-sectional view of the internal threaded rod of the present invention; Figure 8 This is a schematic diagram of the structure of the sleeve and balance plate of the present invention; Figure 9 This is a schematic diagram showing the positional relationship between the balance plate and the extension rod of the present invention; Figure 10 This is a cross-sectional view of the base plate of the present invention; Figure 11 This is a schematic diagram of the rotating frame of the present invention; Figure 12 This is a schematic diagram of the flipping mechanism of the rotating frame of the present invention.

[0017] In the diagram: 1. Operating table; 11. Stand; 2. First motor; 21. Turntable; 22. Sliding frame; 23. Slider; 24. First screw; 25. Cross adjustment frame; 26. Semi-slide groove; 261. First lead screw; 262. First adjusting block; 263. First clamping block; 27. Full slide groove; 271. Second lead screw; 272. Second adjusting block; 273. Second clamping block; 28. Housing; 3. Internal threaded rod; 31. External threaded tube; 32. Buckle; 4. Bottom groove; 5. Second motor; 51. Second screw; 52. Moving bracket; 53. Support frame; 54. Cylinder; 55. Sleeve 551. Locking bolt; 56. Balance plate; 57. Welding head; 571. Nozzle; 6. Circular groove; 61. First spring; 62. Extension rod; 63. Mounting bracket; 64. First elastic rope; 65. T-shaped bracket; 66. Sponge; 661. Scraper; 67. Protective tube; 68. Magnetic block; 69. Electromagnet; 7. Outer tube; 71. Second spring; 72. Base plate; 73. Inner tube; 74. Limiting rod; 75. Inner sliding groove; 8. Rotating rod; 81. Second elastic rope; 82. Rotating frame; 83. Protective frame; 84. Side groove; 85. Sealing component; 9. Connecting rod; 91. Arc-shaped bracket. Detailed Implementation

[0018] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0019] Example 1: Please refer to Figure 1-12 An assembly device for producing an electricity metering box includes an operating table 1. A stand 11 is fixed to one side of the operating table 1. A first motor 2 and a second motor 5 are fixed inside the stand 11. A turntable 21 is fixed to the output shaft of the first motor 2. A sliding frame 22 is fixed to the surface of the turntable 21. A slider 23 is slidably connected inside the sliding frame 22. A cross adjustment frame 25 is fixed to one side of the slider 23. A semi-sliding groove 26 is opened at the top and bottom of the vertical part of the cross adjustment frame 25. A first lead screw 261 is rotatably connected inside the semi-sliding groove 26. A first adjustment block 262 is threaded to the surfaces of both ends of the first lead screw 261. A first clamping block 263 is fixed to the surface of the first adjustment block 262.

[0020] The horizontal part of the cross adjustment bracket 25 has a full slide groove 27. The interior of the full slide groove 27 is rotatably connected to a second lead screw 271. The surfaces of the two ends of the second lead screw 271 are threadedly connected to second adjustment blocks 272. The surfaces of the second adjustment blocks 272 are fixed with second clamping blocks 273. The interiors of the first clamping block 263 and the second clamping block 273 are both threadedly connected to internal threaded rods 3. The surfaces of the internal threaded rods 3 are threadedly connected to external threaded tubes 31. The interiors of the external threaded tubes 31 are rotatably connected to buckles 32.

[0021] The output shaft of the second motor 5 is fixed with a second screw 51. A movable bracket 52 is threadedly connected to the surface of the second screw 51. A cylinder 54 is fixed inside the movable bracket 52. A balance plate 56 is fixed to the cylinder 54 through a sleeve 55. A welding head 57 is fixed to the bottom of the balance plate 56. A first screw 24 is rotatably connected inside the sliding frame 22. The first screw 24 is threadedly connected to the slider 23. The first clamping block 263 and the second clamping block 273 clamp the housing 28 on one side.

[0022] The buckle 32 is L-shaped, and the side of the buckle 32 that contacts the inner wall of the housing 28 is inclined. The surface of the operating table 1 has a bottom groove 4, and a support frame 53 is slidably connected inside the bottom groove 4. The top of the support frame 53 is fixed to the movable bracket 52. The sleeve 55 has a locking bolt 551 fixed inside. The bottom of the balance plate 56 near the welding head 57 has a nozzle 571 fixed. The surface of the stand 11 has a connecting rod 9 fixed. The surface of the connecting rod 9 has an arc-shaped bracket 91 fixed. The arc-shaped bracket 91 is rotatably connected to the turntable 21.

[0023] Specifically, in actual operation, when welding is required on the housing 28, the second motor 5 can be started by the controller. The second motor 5 drives the second screw 51 to rotate, so that the second screw 51 drives the moving bracket 52 to drive the support frame 53 to slide and adjust inside the bottom groove 4. At the same time, the moving bracket 52 also drives the cylinder 54, the sleeve 55 and the balance plate 56 to move synchronously, that is, the second motor 5 drives the balance plate 56 to move.

[0024] Thus, the second motor 5 controls the balance plate 56 to move away from the internal thread rod 3, so that the first clamping block 263 and the second clamping block 273 have sufficient distance from the balance plate 56. Then, the housing 28 is placed on the surface of the first clamping block 263, and then the first lead screw 261 is rotated, so that the first lead screw 261 drives the two first adjusting blocks 262 to drive the first clamping block 263 to clamp the top and bottom of the housing 28 to form a preliminary external clamping.

[0025] Then, the second lead screw 271 is rotated, causing the second lead screw 271 to drive the two second adjusting blocks 272 to move the second clamping blocks 273 toward both sides of the housing 28 until the second clamping blocks 273 clamp the outside of both sides of the housing 28, thereby completing the complete external clamping of the housing 28, so that all the edges of the housing 28 are clamped and limited, thus ensuring the stability of the welds of each plate of the housing 28 and improving the efficiency of subsequent welding and assembly.

[0026] Next, the internal threaded rod 3 is inserted into the interior of each of the first clamping blocks 263 and the second clamping blocks 273, and then rotated and tightened to fix the internal threaded rod 3 inside the first clamping blocks 263 and the second clamping blocks 273. Then, the inclined section of the buckle 32 is attached to the inner wall of the housing 28. Then, the external threaded tube 31 is rotated, and the external threaded tube 31 rotates on the surface of the internal threaded rod 3, so that the internal threaded rod 3 drives the buckle 32 to move towards the stand 11 along the direction of the internal threaded rod 3. During the movement, the buckle 32 gradually locks and clamps the housing 28, and the inclined section of the buckle 32 clamps the inner wall of the housing 28.

[0027] Once all the clips 32 are clamped, the inner wall of the housing 28 is supported by the clips 32. This prevents the first clamping block 263 and the second clamping block 273 from clamping too tightly during the welding process, which could lead to skewing. The clips 32, the first clamping block 263, and the second clamping block 273 form an external clamping and internal supporting structure on the inner and outer walls of the housing 28, thereby improving the stability of the housing 28 and ensuring the stability of the welds between the various plates of the housing 28. This also improves the accuracy and efficiency of subsequent welding and assembly.

[0028] Once the housing 28 is completely fixed, the cylinder 54 can be activated by the controller, causing the cylinder 54 to move the sleeve 55 and the balance plate 56 up and down. This causes the balance plate 56 to move the welding head 57 to the center of the housing 28. Then, the second motor 5 is controlled to drive the balance plate 56 to move towards the housing 28, causing the balance plate 56 to move the welding head 57 towards the housing 28 until the welding head 57 enters the inside of the housing 28.

[0029] Next, the first motor 2 is started by the controller. The first motor 2 drives the turntable 21 and the sliding frame 22 to rotate, which in turn drives the slider 23 and the cross adjustment frame 25 to rotate. The cross adjustment frame 25 drives the first clamping block 263 and the second clamping block 273 to rotate, which in turn causes the second clamping block 273 and the first clamping block 263 to rotate the housing 28. Thus, the first motor 2 can drive the first clamping block 263 and the second clamping block 273 to rotate the housing 28, so that the weld of the housing 28 is rotated to below the welding head 57.

[0030] Next, the controller controls the return stroke of cylinder 54, which drives the sleeve 55, balance plate 56 and welding head 57 to return, so that welding head 57 moves above the weld. Then, the controller can start welding head 57 and control the balance plate 56 and welding head 57 to move through the second motor 5, so that welding head 57 moves while welding assembly is being performed.

[0031] Furthermore, after one of the welds is completed, the cylinder 54 is restarted, causing the cylinder 54 to drive the balance plate 56 and the welding head 57 back to the middle position of the housing 28, reserving sufficient space for the housing 28 to be flipped. Then, the first motor 2 is used to drive the housing 28 to be flipped, so that the welded seam in the housing 28 is transferred. Then, the unwelded seam is flipped to the bottom of the welding head 57 to wait for subsequent welding. This eliminates the need for the present invention to repeatedly disassemble the housing 28 and change the position of the weld seam, and avoids the weld seam calibration during each flipping installation, thereby improving the efficiency of welding and assembly of the present invention.

[0032] It should be noted that all devices in this invention are controlled by a controller. The semi-slide 26 and the full slide 27 are staggered and do not interfere with each other, while the arc-shaped bracket 91 plays the role of supporting the turntable 21, thereby improving the stability of the turntable 21 rotation.

[0033] Secondly, after all the welds inside the housing 28 have been welded and assembled, the first screw 24 can be rotated, and the slider 23 is driven to slide inside the sliding frame 22 through the first screw 24. This causes the slider 23 to drive the cross adjustment frame 25 to move back and forth in the direction of the sliding frame 22. After the movement is completed, the height of the cross adjustment frame 25 can be adjusted, and then the height of the housing 28 can be adjusted through the cross adjustment frame 25. Thus, during the subsequent welding process, the overall height of the housing 28 is reduced.

[0034] After the height of the housing 28 is lowered, the cylinder 54 adjusts the height of the balance plate 56, and the second motor 5 adjusts the horizontal position of the balance plate 56, so that the balance plate 56 can drive the welding head 57 to move to the outside of the housing 28 and above the weld. Then, the various welds on the outside of the housing 28 can be welded. This allows the present invention to weld the welds inside and outside the housing 28 without repeatedly disassembling the housing 28 and calibrating the welds, thereby improving the efficiency of welding and assembling the metering box of the present invention.

[0035] Example 2: A circular groove 6 is provided inside the balance plate 56 near the end of the internal threaded rod 3. A first spring 61 is fixed to the inner wall of the circular groove 6. An extension rod 62 is fixed to one end of the first spring 61. The extension rod 62 is slidably connected to the circular groove 6. A mounting bracket 63 is fixed to one end of the extension rod 62. A first elastic rope 64 is fixed to both sides of the inner cavity of the mounting bracket 63. A T-shaped bracket 65 is fixed to the bottom of the first elastic rope 64. Sponges 66 are fixed to the bottom of both sides of the horizontal part of the T-shaped bracket 65. A scraper 661 is fixed to the surface of the sponge 66. A protective tube 67 is fixed to the top of the T-shaped bracket 65. A magnet 68 is fixed inside the protective tube 67. An electromagnet 69 is fixed to the top of the inner cavity of the mounting bracket 63.

[0036] Specifically, based on Embodiment 1, before the present invention welds and assembles the housing 28, that is, before the balance plate 56 drives the welding head 57 to weld, after the housing 28 is flipped, each of its weld seams is at a different height. Then, the second motor 5 and the cylinder 54 are used to drive the balance plate 56 and the welding head 57 to move above the bottom weld seam. Then, the cylinder 54 is controlled to return, so that the cylinder 54 drives the balance plate 56 and the welding head 57 to descend above the weld seam.

[0037] During the descent of the balance plate 56, the extension rod 62 and the mounting bracket 63 descend synchronously, causing the mounting bracket 63 to lower the T-shaped frame 65 and the sponge 66. At the same time, the controller activates the electromagnet 69, which generates magnetic force after being energized. Since the electromagnet 69 and the magnetic block 68 have the same magnetism, the repulsive magnetic force of the electromagnet 69 pushes the magnetic block 68, causing the magnetic block 68 to move the T-shaped frame 65 towards the bottom weld seam. This causes the T-shaped frame 65 to bring the sponge 66 into contact with both sides of the weld seam to be welded on the shell 28.

[0038] When the second motor 5 drives the balance plate 56 and the welding head 57 to move toward the inside of the housing 28 and weld, the sponge 66 drives the scraper 661 to move toward the inside of the housing 28 in sync with both sides of the weld. During the movement, the sponge 66 and the scraper 661 can clean both sides of the weld, thereby improving the efficiency and stability of the subsequent welding of the welding head 57.

[0039] Once the mounting bracket 63 contacts the inner wall of the housing 28, it can no longer move. At this point, the electromagnet 69 is de-energized, causing the T-shaped bracket 65 to reset under the action of the first elastic rope 64. This prevents the sponge 66 from blocking the front of the welding head 57, allowing the welding head 57 to weld the seam without obstruction. As the welding head 57 continues to move towards the inside of the housing 28 for welding, the mounting bracket 63 is blocked and pushed in the opposite direction by the housing 28, causing the mounting bracket 63 to squeeze the extension rod 62 and retract the extension rod 62 into the circular groove 6. This ensures that the deepest part of the inner side of the housing 28 can be reached, thereby completing the welding of the seam.

[0040] It should be noted that the protective tube 67 is slidably connected to the magnetic block 68 and the electromagnet 69. That is, the protective tube 67 serves to protect the magnetic block 68 and the electromagnet 69, and at the same time, it also serves to limit the movement direction of the T-shaped frame 65, so that the T-shaped frame 65 can only move along the direction of the electromagnet 69 and the magnetic block 68 under the action of the protective tube 67.

[0041] Example 3: An outer tube 7 is fixed on both sides of the bottom of the balance plate 56. A second spring 71 is fixed inside the outer tube 7 at the bottom of the balance plate 56. A base plate 72 is fixed at the bottom of the second spring 71. An inner tube 73 is fixed on the surface of the base plate 72. The inner tube 73 is slidably connected to the outer tube 7. Limiting rods 74 are fixed on both sides of the base plate 72 near the end of the internal thread rod 3. An inner sliding groove 75 is opened on the side of the base plate 72 near the limiting rod 74.

[0042] A rotating rod 8 is slidably connected inside the inner slide groove 75. A second elastic rope 81 is fixed to one end of the rotating rod 8 away from the limiting rod 74. One end of the second elastic rope 81 is fixed to the inner wall of the inner slide groove 75. A rotating frame 82 is fixed to one end of the rotating rod 8 away from the second elastic rope 81. Notches are opened on the surfaces at both ends of the rotating frame 82, and the angle of the notches is ninety degrees. Protective frames 83 are fixed on both sides of the surface of the rotating frame 82. Side grooves 84 are opened on the inner walls on both sides of the protective frame 83. A sealing member 85 is slidably connected inside the side grooves 84.

[0043] Specifically, based on Embodiment 1 and Embodiment 2, before the welding assembly of the weld seam inside the housing 28, that is, before the cylinder 54 drives the sleeve 55, balance plate 56 and welding head 57 to rise and move to the middle position height of the housing 28, the second motor 5 can drive the balance plate 56 and welding head 57 to move towards the housing 28 first, so that the welding head 57 moves to the outside of the housing 28, and the balance plate 56 drives the outer tube 7, the second spring 71 and the base plate 72 to move synchronously.

[0044] This causes the base plate 72 to move the rotating rod 8 and the rotating frame 82 to below the bottom weld of the housing 28, that is, the cylinder 54 can drive the balance plate 56 and the rotating frame 82 to move up and down synchronously. Then, the cylinder 54 is controlled to drive the balance plate 56 and the welding head 57 to rise to the height of the middle position of the housing 28. At this time, the balance plate 56 drives the rotating rod 8 and the rotating frame 82 to rise synchronously.

[0045] During its ascent, the rotating frame 82 contacts the bottom weld of the housing 28. During this contact, it rotates and automatically calibrates, causing the rotating frame 82 to drive the protective frame 83 to fit against both sides of the weld. Subsequently, the second motor 5 drives the balance plate 56, the welding head 57, and the rotating frame 82 to move towards the inside of the housing 28. That is, while the welding head 57 is moving and welding, the rotating frame 82 is located below the welding head 57 and the weld, and fits against both sides of the weld. This allows it to receive the molten pool generated during welding, preventing molten pool leakage and thus improving welding efficiency and equipment safety.

[0046] It should be noted that in the initial state, the protective frame 83 faces the top of the base plate 72. Therefore, under the action of gravity, the two sealing parts 85 slide inside the side groove 84, causing the sealing parts 85 to converge towards the bottom of the base plate 72. The bottom ends of the two sealing parts 85 can then be spliced ​​together, thereby protecting the bottom of the weld and preventing the molten pool from leaking.

[0047] The limiting rod 74 acts as a limiting protective frame 83, ensuring that the protective frame 83 is always positioned above the base plate 72 regardless of how it is calibrated. This allows the rotating frame 82 to be calibrated according to the angle of the weld when it is in contact with both sides of the weld, so that the notch of the rotating frame 82 and the protective frame 83 are engaged with the surface of the weld.

[0048] When the present invention requires welding and molten pool protection on the outside of the housing 28, before adjustment, the rotating frame 82 can be pulled, so that the rotating frame 82 drives the rotating rod 8 to pull the second elastic rope 81, so that the rotating rod 8 slides inside the inner groove 75, so that the rotating frame 82 and the protective frame 83 are separated from the limit rod 74. Then the rotating frame 82 is flipped, so that the rotating frame 82 drives the protective frame 83 toward the bottom of the base plate 72.

[0049] Subsequently, during the welding of the outermost weld seam of the outer shell 28, the cylinder 54 drives the balance plate 56, welding head 57 and rotating rod 8 to descend above the outermost weld seam of the outer shell 28, so that the rotating frame 82 and the protective frame 83 are once again in contact with the two sides of the weld seam. At this time, under the action of gravity, the sealing member 85 continues to slide inside the side groove 84, and moves towards the top of the bottom plate 72, so that the middle part of the rotating frame 82 is open. At this time, the welding head 57 can weld the weld seam through the open position in the middle of the rotating frame 82.

[0050] The molten pool generated during the welding process is protected by the rotating frame 82, which prevents the molten pool from sliding to both sides of the weld, thereby protecting the surface of the shell 28 and improving the welding efficiency of the present invention and the safety protection of the equipment and the shell 28.

[0051] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An assembly device for producing electricity metering boxes, comprising an operating table (1), wherein a support frame (11) is fixed to one side of the operating table (1), characterized in that: The first motor (2) and the second motor (5) are fixed inside the support frame (11). The output shaft of the first motor (2) is fixed with a turntable (21). A sliding frame (22) is fixed on the surface of the turntable (21). A slider (23) is slidably connected inside the sliding frame (22). A cross adjustment frame (25) is fixed on one side of the slider (23). A semi-slide groove (26) is provided at the top and bottom of the vertical part of the cross adjustment frame (25). A first lead screw (261) is rotatably connected inside the semi-slide groove (26). A first adjustment block (262) is threadedly connected to the surfaces of both ends of the first lead screw (261). A first clamping block (263) is fixed to the surface of the first adjustment block (262). The surface of the horizontal part of the cross adjustment bracket (25) is provided with a full slide groove (27), and the interior of the full slide groove (27) is rotatably connected to a second lead screw (271). The surfaces of the two ends of the second lead screw (271) are threadedly connected to a second adjustment block (272), and the surface of the second adjustment block (272) is fixed with a second clamping block (273). The first clamping block (263) and the second clamping block (273) are both threaded with internal thread rods (3), and the surface of the internal thread rods (3) is threaded with external thread tubes (31). The internal thread tubes (31) are rotatably connected with buckles (32). The output shaft of the second motor (5) is fixed with a second screw (51), and the surface of the second screw (51) is threaded with a movable bracket (52). The movable bracket (52) is fixed with a cylinder (54) inside, and the cylinder (54) is fixed with a balance plate (56) through a sleeve (55). The bottom of the balance plate (56) is fixed with a welding head (57).

2. The electricity metering box production and assembly device according to claim 1, characterized in that: The sliding frame (22) is internally rotatably connected to a first screw (24), which is threadedly connected to a slider (23). The first clamping block (263) and the second clamping block (273) clamp the housing (28) on one side.

3. The electricity metering box production and assembly device according to claim 1, characterized in that: The buckle (32) is L-shaped, and the side of the buckle (32) that contacts the inner wall of the housing (28) is inclined.

4. The electricity metering box production and assembly device according to claim 1, characterized in that: The surface of the operating table (1) is provided with a bottom groove (4), and a support frame (53) is slidably connected inside the bottom groove (4). The top of the support frame (53) is fixed to the movable bracket (52).

5. The electricity metering box production and assembly device according to claim 1, characterized in that: The sleeve (55) is fixed with a locking bolt (551) inside, and the bottom of the balance plate (56) near the welding head (57) is fixed with a nozzle (571).

6. The electricity metering box production and assembly device according to claim 1, characterized in that: The balance plate (56) has a circular groove (6) inside near the end of the internal thread rod (3). A first spring (61) is fixed to the inner wall of the circular groove (6). An extension rod (62) is fixed to one end of the first spring (61). The extension rod (62) is slidably connected to the circular groove (6). A mounting bracket (63) is fixed to one end of the extension rod (62). The mounting bracket (63) has a first elastic rope (64) fixed on both sides of its inner cavity, a T-shaped bracket (65) fixed at the bottom of the first elastic rope (64), a sponge (66) fixed at the bottom of both sides of the horizontal part of the T-shaped bracket (65), and a scraper (661) fixed on the surface of the sponge (66). The top of the T-shaped frame (65) is fixed with a protective tube (67), the inside of the protective tube (67) is fixed with a magnetic block (68), and the top of the inner cavity of the mounting frame (63) is fixed with an electromagnet (69).

7. The electricity metering box production and assembly device according to claim 1, characterized in that: The balance plate (56) has an outer tube (7) fixed on both sides of its bottom. The bottom of the balance plate (56) is located inside the outer tube (7) and a second spring (71) is fixed inside. The bottom of the second spring (71) is fixed with a base plate (72). The surface of the base plate (72) is fixed with an inner tube (73). The inner tube (73) is slidably connected to the outer tube (7). Limiting rods (74) are fixed on both sides of the base plate (72) near the end of the internal thread rod (3), and an internal sliding groove (75) is provided on the side of the base plate (72) near the limiting rod (74).

8. The electricity metering box production and assembly device according to claim 7, characterized in that: The inner slide groove (75) is slidably connected to a rotating rod (8). A second elastic rope (81) is fixed to one end of the rotating rod (8) away from the limiting rod (74). One end of the second elastic rope (81) is fixed to the inner wall of the inner slide groove (75). A rotating frame (82) is fixed to one end of the rotating rod (8) away from the second elastic rope (81). The rotating frame (82) has notches on both ends of its surface, and the notches are at an angle of 90 degrees. Protective frames (83) are fixed on both sides of the rotating frame (82). Side grooves (84) are opened on the inner walls of both sides of the protective frames (83). A sealing member (85) is slidably connected inside the side grooves (84).

9. The electricity metering box production and assembly device according to claim 1, characterized in that: A connecting rod (9) is fixed to the surface of the stand (11), and an arc-shaped bracket (91) is fixed to the surface of the connecting rod (9). The arc-shaped bracket (91) is rotatably connected to the turntable (21).

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