Argon arc welding equipment for dust collecting bag supporting framework

Abstract

The invention discloses argon arc welding equipment for a dust collecting bag supporting framework, and relates to the technical field of welding equipment. According to the argon arc welding equipment for the dust collecting bag supporting framework, a plurality of bevel gears are synchronously driven by a helical fluted disc to rotate, the effect of synchronously adjusting the positions of a plurality of second cross-shaped sliding blocks is achieved, then the purpose of synchronously increasing or reducing the distance between gun heads of argon arc welding guns is achieved, and therefore the argon arc welding equipment is suitable for welding work of dust collecting bag supporting frameworks of different sizes; by arranging the waste gas treatment mechanism, harmful smoke generated in the welding process can be sucked into a purification barrel through suction force generated when fan blades rotate, and purification treatment on the welding smoke is achieved; the purified welding flue gas with high heat can be blown to the surface of the clamped to-be-welded dust collecting bag supporting framework through the nozzle, the preheating effect before welding is achieved, and the problems that the position of a welding seam is deformed and cracks are generated due to thermal stress generated in the welding process and residual stress generated after cooling are avoided.

Description

Technical Field

[0001] The invention relates to the technical field of welding equipment, in particular to argon arc welding equipment for a dust bag support frame. Background Art

[0002] The dust bag frame is an important part of the dust collector. It is mainly used to support and fix the dust bag to ensure that the bag can maintain a stable shape during the dust removal process and effectively capture dust. Among them, the dust bag skeleton is mainly composed of a top cover, rings, longitudinal ribs and a chassis. In the production process of dust bags, since the top cover and chassis are directly provided finished parts, the rings and longitudinal ribs need to be pre-welded into a rib cage, and then the two ends of the rib cage are respectively welded to the top cover and chassis. After the welding is cooled, it is polished and surface anti-corrosion treated to form a finished dust bag support skeleton.

[0003] A skeleton processing and welding device for dust bag disclosed in the patent application with reference publication number CN114523233A, which conveniently adjusts the distance between two support blocks by setting a docking mechanism and controlling a second motor, and an electromagnet can fix a connecting base and a connecting nozzle, thereby achieving docking between the skeleton and the connecting base and the connecting nozzle, and a third motor drives the skeleton, the connecting base and the connecting nozzle to rotate after docking, and a cylinder drives the connecting rod to extend and retract, so that the connecting rod drives the welding head to move, thereby achieving welding of the skeleton, accelerating work efficiency, and improving the practicality of the device; A comprehensive analysis of the above patents reveals the following defects: At present, most of the dust bag support skeleton welding equipment adopts the conventional method of welding the longitudinal reinforcement at the end of the reinforcement cage and the chassis. Since there are multiple longitudinal reinforcements distributed in a ring in the reinforcement cage, only after one of the longitudinal reinforcements and the chassis is welded can the welds at other positions be welded in sequence. It is impossible to weld multiple welds at the same time, which increases the welding time. In addition, the reinforcement cage needs to be constantly turned over during the welding process, and the positions of multiple welds relative to the welding gun need to be adjusted one by one, which increases the difficulty of welding. 2) Due to the large temperature difference between the welding area and the dust bag support frame as a whole, direct cold welding can easily lead to increased welding stress and strain rate, causing cracks at the welding position and reducing welding quality.

[0004] Therefore, the present invention proposes an argon arc welding device for a dust bag support frame to solve the above problems. Summary of the invention

[0005] In view of the deficiencies in the prior art, the present invention provides an argon arc welding device for a dust bag support frame, which solves the problem that the current dust bag support frame welding equipment can only weld one of the longitudinal reinforcements and the chassis before welding the welds at other positions in turn, and is unable to weld multiple welds at the same time, resulting in increased welding time. In addition, the reinforcement cage needs to be continuously turned over during the welding process, and the positions of multiple welds relative to the welding gun need to be adjusted one by one, which increases the difficulty of welding. The temperature difference between the welding area and the dust bag support frame as a whole is large, and direct cold welding can easily lead to increased welding stress and strain rate, causing cracks at the welding position and reducing the welding quality.

[0006] To achieve the above objectives, the present invention is implemented through the following technical solutions: an argon arc welding device for a dust bag support frame, comprising a welding table, an operation window opened on the front of the welding table and a dust bag support frame, a servo motor 1 is fixedly arranged inside the welding table, the output shaft of the servo motor 1 rotates through the welding table and is fixedly connected to a turntable, a plurality of exhaust gas through-hole areas are evenly opened on the top of the turntable, and a positioning component for limiting the position of the dust bag support frame is fixedly arranged at the top center position of each of the exhaust gas through-hole areas to facilitate subsequent welding operations, a plurality of exhaust gas treatment mechanisms for purifying welding fumes and reusing the heat of welding fumes are arranged at the bottom of the turntable and at positions corresponding to the plurality of positioning components, a gear ring for cooperating with the exhaust gas treatment mechanism to complete the welding fume treatment work is fixedly arranged on the top of the welding table, a support mechanism is arranged at the top center position of the turntable, welding mechanisms for performing multi-point synchronous welding on the dust bag support frame are arranged on both sides of the outer wall of the support mechanism, and a driving mechanism for driving the welding mechanism to complete the synchronous welding action is also arranged above the support mechanism.

[0007] Furthermore, the positioning assembly includes a telescopic rod and an electromagnet plate fixedly arranged at the top of the telescopic rod, and two limit columns are detachably arranged on the side wall of the electromagnet plate to ensure that the multiple welding point positions of the dust bag support frame and the welding positions of the welding mechanism correspond one to one.

[0008] Furthermore, the exhaust gas treatment mechanism includes a purification component arranged at the bottom of the turntable and a preheating component arranged on one side of the purification component for spraying air toward the dust bag support frame, and the purification component and the preheating component are connected by a connecting pipe for conveying the air purified by the purification component to the preheating component; The preheating assembly comprises an annular tube fixedly arranged above the turntable through a mounting bracket, and a plurality of nozzles connected to the interior of the annular tube are evenly and fixedly arranged on the outer wall of the annular tube.

[0009] Furthermore, the purification assembly includes a purification cylinder detachably arranged at the bottom of the turntable by bolts, a cover plate connected to the inner wall of the purification cylinder by threads, and a plurality of air inlets evenly arranged on the top of the cover plate, a filter element for purifying welding fumes is fixedly arranged inside the purification cylinder, a transmission is connected to the bottom of the purification cylinder by a flange, a gear meshingly connected to a gear ring is fixedly arranged on the input shaft of the transmission, and a fan blade is fixedly arranged on the output shaft of the transmission, and the transmission is used to accelerate the power input by the input shaft and output it through the output shaft.

[0010] Furthermore, the supporting mechanism includes a transmission shaft 1 fixedly arranged at the top center position of the turntable by a flange and a motor box fixedly arranged at the top of the transmission shaft 1, a servo motor 2 is fixedly arranged inside the motor box, the output shaft of the servo motor 2 rotates and passes through the motor box and is connected to the connecting shaft through a coupling, a locking mechanism for locking or releasing the output shaft of the servo motor 2 is fixedly arranged on the top of the motor box, a carrying frame is connected to the outer wall of the motor box by a flange, a transmission shaft 2 fixedly connected to the top of the connecting shaft is rotatably arranged inside the carrying frame, support arms for installing the welding mechanism are fixedly arranged on both sides of the outer wall of the transmission shaft 2, and a cross-shaped through groove is opened inside the support arm.

[0011] Furthermore, the welding mechanism includes a welding component for welding the dust bag support frame and a hoisting unit for driving the welding component to rise and fall; The hoisting unit includes a cross slider 1 slidably arranged inside a cross-shaped through groove and a lifting rod slidably passing through the cross slider 1, the cross slider 1 and the cross through groove are locked in position by fastening bolts, a delay switch for controlling the start or shut down of the welding component is fixedly arranged on the top of the lifting rod, and a connecting frame is fixedly arranged on the bottom end of the lifting rod, a limit ring is fixedly arranged on the outer wall of the lifting rod and located above the cross slider 1, and a spring is provided on the outer wall of the lifting rod and located between the limit ring and the cross slider 1.

[0012] Further, the welding component includes a carrier plate fixedly arranged at the bottom end of the connecting frame and a plurality of cross slide grooves uniformly arranged at the bottom of the carrier plate, a plurality of long through grooves corresponding to the positions of the cross slide grooves and connected to the inside thereof are uniformly arranged on the top of the carrier plate, a transmission groove is arranged at the center of the carrier plate, and a welding unit for welding one of the welding positions of the dust bag support frame is arranged inside each of the cross slide grooves; The welding unit includes a screw rotatably arranged inside a cross slide and a bevel gear fixedly arranged at one end of the screw and located inside a transmission groove. A cross slider 2 is threadedly sleeved on the outer wall of the screw. The cross slider 2 is slidably arranged inside the cross slide. A pointer and a argon arc welding gun are fixedly arranged on the top and bottom of the cross slider 2, respectively.

[0013] Furthermore, a scale line groove for indicating the distance the pointer moves is provided on the top of the carrier plate and on one side of the long through slot, and a helical gear plate is rotatably provided inside the transmission slot and is meshed with multiple bevel gears at the same time. An adjusting rod is fixedly provided on the top of the helical gear plate, and the top end of the adjusting rod rotates through the carrier plate and is fixedly provided with an adjusting knob.

[0014] Furthermore, the driving mechanism comprises a disc fixedly arranged at the bottom of the carrier and mounting slots symmetrically arranged at both sides of the top of the disc, and a driving unit for driving the welding mechanism to be lifted and lowered is detachably arranged inside the mounting slot; The drive unit includes a mounting plate connected in a mounting groove by fastening bolts and stud mounting holes on both sides of the top of the mounting plate. An arc-shaped driving plate is arranged below the mounting plate. Studs matching the stud mounting holes are fixedly arranged on both sides of the top of the arc-shaped driving plate. The studs are locked in position by nuts and the mounting plate.

[0015] Furthermore, the dust bag support frame includes a rib cage, and a top cover and a tray are welded to both ends of the rib cage respectively. After the rib cage and the tray are welded, a plurality of long strip welding areas are formed.

[0016] The present invention provides an argon arc welding device for a dust bag support frame. Compared with the prior art, it has the following beneficial effects: 1. An argon arc welding device for a dust bag support frame can use a bevel gear plate to synchronously drive multiple bevel gears to rotate by setting a welding mechanism, so as to achieve the effect of synchronously adjusting the positions of multiple cross slides, and then achieve the purpose of synchronously increasing or decreasing the distance between the argon arc welding gun heads, so as to adapt to the welding work of dust bag support frames with different outer diameters; secondly, since the initial position of the argon arc welding gun head is a known value, according to the set rules, that is, the distance between adjacent argon arc welding gun heads increases or decreases by one millimeter for each movement of the pointer by a scale line groove, therefore, based on the reference of the scale line groove, the position of the argon arc welding gun can be accurately adjusted to ensure the welding accuracy of the long strip welding area between the dust removal rib cage and the tray.

[0017] 2. A argon arc welding device for a dust bag support frame, by setting a driving mechanism, the mechanism is used in conjunction with the welding mechanism, the two form a linkage during the welding process, during the rotation of the welding mechanism, the arc driving plate can be used to push the lifting rod to move down at a uniform speed, so that the argon arc welding gun can move at a uniform speed along the long strip welding area, and the effect of continuous and stable welding can be achieved; secondly, the arc driving plate and the disc are split-type designs, and the arc driving plate with the corresponding arc size can be selected and replaced according to the size of the longitudinal height of the long strip welding area, and each arc driving plate can correspond to the driving plate The argon arc welding gun is driven to descend to a fixed height value, that is, the height value is adapted to the height of the long strip welding area of ​​the dust bag support frame, to ensure that after the lifting rod slides along the bottom of the arc driving plate, the argon arc welding gun can move continuously from the top of the long strip welding area to the bottom, so as to realize continuous welding of multiple long strip welding areas; secondly, the arc surface of the arc driving plate is a continuous smooth curved surface, which can drive the argon arc welding gun to descend smoothly and continuously. Compared with the welding method in which the welding speed cannot be controlled manually, the present invention can ensure that the weld is more continuous and smooth, which is beneficial to improving the welding quality.

[0018] 3. An argon arc welding device for a dust bag support frame can achieve the effect of driving the exhaust gas treatment mechanism to operate simultaneously during the welding process by setting up an exhaust gas treatment mechanism. Since the gear and the gear ring are meshed and connected, the gear ring can be used to drive the gear to rotate when the turntable rotates, thereby achieving the effect of driving the fan blades to rotate quickly. The suction force generated when the fan blades rotate can suck the harmful smoke generated during the welding process into the purification cylinder, thereby purifying the welding smoke and preventing the welding smoke from drifting around and endangering the health of the workers. Secondly, the purified welding smoke with high heat can be blown through the nozzle onto the surface of the clamped dust bag support frame to be welded. The high-temperature welding smoke can heat the dust bag support frame to achieve the preheating effect before welding, thereby avoiding the deformation and cracking of the weld position caused by the thermal stress generated during the welding process and the residual stress after cooling due to the low temperature of the dust bag support frame before welding, thereby reducing the welding quality. Furthermore, the exhaust gas treatment mechanism uses part of the rotational force of the turntable during welding to convert it into the driving force for the rotation of the fan blades, thereby providing power for the exhaust gas treatment mechanism. There is no need to set a separate driving device for the exhaust gas treatment mechanism, making the structure simpler and convenient for subsequent inspection and maintenance.

[0019] 4. An argon arc welding device for a dust bag support frame can provide a stable supporting force when two welding mechanisms are performing welding operations by setting a supporting mechanism. When welding the next pair of dust bag support frames, the two welding devices can be synchronously driven by servo motor 2 to rotate a set angle to complete the position switching of the welding mechanisms, so that the two are in a new welding position, ensuring that the positions of the two welding mechanisms and the next pair of dust bag support frames correspond one to one, facilitating the rapid welding of the next pair of dust bag support frames, thereby improving the welding efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the overall three-dimensional structure of the present invention; Figure 2 It is a schematic diagram of the internal structure of the present invention; Figure 3 It is a front view structural schematic diagram of the present invention; Figure 4 This is a schematic structural diagram of the gear ring installation state of the present invention; Figure 5 This is a schematic diagram of the structure of the present invention when the welding platform is removed; Figure 6 For the present invention Figure 5 A schematic diagram of the enlarged structure of part A; Figure 7 This is a schematic structural diagram of the assembly state of the turntable and the exhaust gas treatment mechanism of the present invention; Figure 8 It is a schematic diagram of the structure of the waste gas treatment mechanism of the present invention; Fig. 9 It is a schematic cross-sectional view of the purification component of the present invention; Fig.10 This is a schematic diagram of the support mechanism of the present invention in an exploded state; Fig.11 It is a schematic diagram of the structure of the welding mechanism of the present invention in an exploded state; Fig.12 For the present invention Fig.11 A schematic diagram of the enlarged structure of part B in FIG. Fig.13 It is a schematic diagram of the cross-sectional structure of the carrier plate of the present invention; Fig.14 For the present invention Fig.13 A schematic diagram of the enlarged structure of part C in FIG. Fig.15 It is a schematic structural diagram of the assembly state of the carrier plate and the argon arc welding gun of the present invention; Fig.16 This is a schematic diagram of the structure of the driving mechanism of the present invention in an exploded state; Fig.17 It is a schematic diagram of the dust bag support skeleton structure of the present invention.

[0021] In the figure: 1. welding table; 2. operation window; 3. turntable; 4. exhaust gas through hole area; 5. dust bag support frame; 51. rib cage; 52. top cover; 53. tray; 54. long strip welding area; 6. positioning component; 61. telescopic rod; 62. electromagnet plate; 63. limit column; 7. exhaust gas treatment mechanism; 71. purification component; 711. purification cylinder; 712. air inlet; 713. filter element; 714. transmission; 715. gear; 716. fan blade; 72. connecting pipe; 73. annular pipe; 74. nozzle; 8. gear ring; 9. support mechanism; 91. transmission shaft 1; 92. motor box; 93. connecting shaft; 94. locking mechanism; 95. carrier frame; 96 , transmission shaft 2; 97, support arm; 10, welding mechanism; 101, cross slider 1; 102, lifting rod; 103, delay switch; 104, spring; 105, connecting frame; 106, bearing plate; 107, cross slide; 108, long through groove; 109, transmission groove; 1010, screw; 1011, bevel gear; 1012, pointer; 1013, scale groove; 1014, argon arc welding gun; 1015, oblique gear plate; 1016, adjustment knob; 1017, cross slider 2; 11, driving mechanism; 111, disc; 112, mounting through groove; 113, mounting plate; 114, stud mounting through hole; 115, arc driving plate; 116, stud. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0023] like Figure 1-Figure 17 The present invention provides four technical solutions: a argon arc welding device for a dust bag support frame, specifically including the following embodiments: Embodiment 1: Figure 1-Figure 7, 16, 17, an argon arc welding device for a dust bag support frame, comprising a welding table 1, an operation window 2 opened on the front of the welding table 1 and a dust bag support frame 5, a servo motor 1 is fixedly arranged inside the welding table 1, the output shaft of the servo motor 1 rotates through the welding table 1 and is fixedly connected to a turntable 3, a plurality of exhaust gas through hole areas 4 are evenly arranged on the top of the turntable 3, a positioning component 6 for limiting the position of the dust bag support frame 5 is fixedly arranged at the top center position of each exhaust gas through hole area 4 to facilitate subsequent welding operations, the bottom of the turntable 3 and the plurality of exhaust gas through hole areas 4 are ... A plurality of waste gas treatment mechanisms 7 for purifying welding fumes and reusing the heat of welding fumes are arranged at positions corresponding to the positioning components 6. A gear ring 8 for cooperating with the waste gas treatment mechanism 7 to complete the welding fume treatment work is fixedly arranged on the top of the welding table 1. A supporting mechanism 9 is arranged at the top center position of the turntable 3. Welding mechanisms 10 for performing multi-point synchronous welding of the dust bag support frame 5 are arranged on both sides of the outer wall of the supporting mechanism 9, and a driving mechanism 11 for driving the welding mechanism 10 to complete the synchronous welding action is also arranged above the supporting mechanism 9. The driving mechanism 11 includes a disk 111 fixedly arranged at the bottom of the carrier frame and mounting grooves 112 symmetrically opened on both sides of the top of the disk 111. The mounting groove 112 is detachably provided with a driving unit for pushing the welding mechanism 10 to rise and fall. The driving unit includes a mounting plate 113 connected to the mounting groove 112 by fastening bolts and stud mounting holes 114 opened on both sides of the top of the mounting plate 113. An arc-shaped driving plate 115 is arranged below the mounting plate 113. Studs 116 matching the stud mounting holes 114 are fixedly arranged on both sides of the top of the arc-shaped driving plate 115. The studs 116 are locked in position by nuts and mounting plates 113. The dust bag support frame 5 includes a rib cage 51. A top cover 52 and a tray 53 are welded at both ends of the rib cage 51. After welding, the rib cage 51 and the tray 53 form a plurality of long strip welding areas 54. The exhaust gas through hole area 4 includes a plurality of exhaust gas through holes distributed in a ring shape, and the plurality of exhaust gas through holes are all connected to the inside of the exhaust gas treatment mechanism 7 at the corresponding position; all electrical equipment in the present invention are connected to the external power supply through brushes to ensure that the turntable 3 can ensure a stable supply of electric energy during the rotation process; the positioning component 6 includes a telescopic rod 61 and an electromagnet plate 62 fixedly arranged on the top of the telescopic rod 61, and two limit columns 63 are detachably arranged on the side wall of the electromagnet plate 62, which are used to ensure that the multiple welding point positions of the dust bag support frame 5 and the welding positions of the welding mechanism 10 correspond one to one.The telescopic rod 61 can be manually adjusted in height to adapt to the dust bag support frame 5 of different lengths within a certain range. The distance between the two limit columns 63 is just adapted to the distance between two adjacent longitudinal ribs in the dust bag support frame 5. When the limit column 63 is located between two adjacent longitudinal ribs in the dust bag support frame 5, the position of each welding point in the dust bag support frame 5 corresponds one by one to the position of the argon arc welding gun 1014 in the welding mechanism 10; the distance between the two limit columns 63 can be adjusted according to the distance between two adjacent longitudinal ribs in the rib cage 51.

[0024] Embodiment 2: Figure 8-Figure 9 The main difference between this embodiment and the first technical solution is that: an argon arc welding device for a dust bag support frame, the exhaust gas treatment mechanism 7 includes a purification component 71 arranged at the bottom of the turntable 3 and a preheating component arranged on one side of the purification component 71 for spraying air to the dust bag support frame 5, the purification component 71 and the preheating component are connected by a connecting pipe 72, which is used to transport the air purified by the purification component 71 to the preheating component; the preheating component includes an annular tube 73 fixedly arranged above the turntable 3 by a mounting bracket, and a plurality of nozzles 74 connected to the interior of the annular tube 73 are evenly fixedly arranged on the outer wall of the annular tube 73. The purification assembly 71 includes a purification cartridge 711 detachably arranged at the bottom of the turntable 3 by bolts, a cover plate connected to the inner wall of the purification cartridge 711 by threads, and a plurality of air inlets 712 evenly arranged on the top of the cover plate. A filter element 713 for purifying welding fumes is fixedly arranged inside the purification cartridge 711. A transmission 714 is connected to the bottom of the purification cartridge 711 by a flange. A gear 715 meshing with the gear ring 8 is fixedly arranged on the input shaft of the transmission 714. The output shaft of the transmission 714 rotates through the purification cartridge 711 and is fixedly arranged. There are fan blades 716. The transmission 714 is used to accelerate the power input by the input shaft and output it through the output shaft. Multiple nozzles 74 are arranged around the positioning component 6, which can spray air from multiple angles to the clamped dust bag support frame 5. When the sprayed air flow is purified flue gas, the air carries heat, which can preheat the dust bag support frame 5 to be welded to prevent the dust bag support frame 5 from having a low temperature before welding, resulting in thermal stress generated during welding and residual stress after cooling, which causes the weld position to deform and crack. The transmission 714 is a known prior art and has been widely used. Its internal structure and working principle will not be described in detail here.

[0025] Embodiment 3: Fig.10The main difference between this embodiment and the second technical solution is that: a argon arc welding device for a dust bag support frame, the support mechanism 9 includes a transmission shaft 1 91 fixedly arranged at the center of the top of the turntable 3 through a flange and a motor box 92 fixedly arranged at the top of the transmission shaft 1 91, a servo motor 2 is fixedly arranged inside the motor box 92, the output shaft of the servo motor 2 rotates through the motor box 92 and is connected to a connecting shaft 93 through a coupling, a locking mechanism 94 for locking or releasing the output shaft of the servo motor 2 is fixedly arranged on the top of the motor box 92, a bearing frame 95 is connected to the outer wall of the motor box 92 through a flange, a transmission shaft 2 96 fixedly connected to the top of the connecting shaft 93 is rotatably arranged inside the bearing frame 95, and support arms 97 for installing the welding mechanism 10 are fixedly arranged on both sides of the outer wall of the transmission shaft 2 96, and a cross-shaped through groove is opened inside the support arm 97. The locking mechanism 94 is a prior art, and its internal structure is not described here. When the servo motor 2 stops working, the locking device in the locking mechanism 94 can lock its output shaft to prevent it from rotating; when the servo motor 2 is turned on, the locking mechanism 94 can separate the locking device from the shaft surface, and the motor shaft can rotate freely. The locking mechanism 94 can effectively control the movement of the motor shaft to ensure that the motor does not rotate accidentally when it stops, thereby improving safety and stability. The locking device is the core component of the motor shaft locking mechanism 94, which is used to realize the locking function of the motor shaft and achieves locking by clamping the motor shaft.

[0026] Embodiment 4: Figure 11-Figure 15The main difference between this embodiment and the third technical solution is that: an argon arc welding device for a dust bag support frame, the welding mechanism 10 includes a welding component for welding the dust bag support frame 5 and a hoisting unit for driving the welding component to rise and fall; the hoisting unit includes a cross slider 101 slidably arranged inside the cross-shaped through groove and a lifting rod 102 sliding through the cross slider 101, the cross slider 101 and the cross through groove are locked in position by fastening bolts, a delay switch 103 for controlling the start or shut down of the welding component is fixedly arranged on the top of the lifting rod 102, and a connecting frame 105 is fixedly arranged on the bottom end of the lifting rod 102, a limit ring is fixedly sleeved on the outer wall of the lifting rod 102 and located above the cross slider 101, and a spring 104 is slidingly sleeved on the outer wall of the lifting rod 102 and located between the limit ring and the cross slider 101. The welding components include a carrier plate 106 fixedly arranged at the bottom end of the connecting frame 105 and a plurality of cross grooves 107 uniformly opened at the bottom of the carrier plate 106, a plurality of long through grooves 108 corresponding to the positions of the cross grooves 107 and connected to the inside thereof are uniformly opened on the top of the carrier plate 106, a transmission groove 109 is opened at the center of the carrier plate 106, and a welding unit for welding one of the welding positions of the dust bag support frame 5 is arranged inside each cross groove 107; the welding unit includes a screw 1010 rotatably arranged inside the cross groove 107 and a bevel gear 1011 fixedly arranged at one end of the screw 1010 and located inside the transmission groove 109, a cross slider 1017 is threadedly sleeved on the outer wall of the screw 1010, the cross slider 1017 is slidably arranged inside the cross groove 107, and a pointer 1012 and an argon arc welding gun 1014 are fixedly arranged on the top and bottom of the cross slider 1017 respectively. A scale groove 1013 for indicating the moving distance of the pointer 1012 is provided on the top of the carrier plate 106 and on one side of the long through groove 108. A helical toothed disc 1015 is provided inside the transmission groove 109 and is simultaneously meshed and connected with multiple bevel gears 1011. An adjustment rod is fixedly provided on the top of the helical toothed disc 1015. The top end of the adjustment rod rotates through the carrier plate 106 and is fixedly provided with an adjustment knob 1016. The delay switch 103 is used to simultaneously control the working setting time of multiple argon arc welding guns 1014, and the delay time can be adjusted according to specific needs. The delay switch 103 and the argon arc welding gun 1014 are electrically connected through a wire. Multiple operation ports are evenly provided on the outer wall of the connecting frame 105 to facilitate the staff to rotate and adjust the adjustment knob 1016.After use, the adjustment knob 1016 needs to be locked with a fastening bolt or other component to prevent it from rotating. The initial position of the cross slider 1017 is a known value. When the cross slider 1017 is in the initial position, the distance between adjacent gun heads of the argon arc welding guns 1014 corresponding to the bottom of the multiple cross sliders 1017 is also a known value. The position of the gun head of the argon arc welding gun 1014 at the initial position from the top of the turntable 3 is also a known set value, and the center position formed by the gun heads of the multiple argon arc welding guns 1014 is relative to the center position of the positioning assembly 6. After the dust bag support frame 5 is clamped, its center of gravity and the center position of the positioning assembly 6 are on a vertical line. The distance the gun head of the argon arc welding gun 1014 descends can be changed by replacing the arc drive plate 115 of known different heights. The adjustment is performed with reference to the initial position value of the argon arc welding gun 1014 gun head and the size of the dust bag support frame 5 to be welded, so as to ensure that after the adjustment, the positions of the gun heads of the multiple argon arc welding guns 1014 can just match the positions of the four long strip welding areas 54 of the dust bag support frame 5 to be welded. And every time the pointer 1012 moves a distance of the scale groove 1013, the distance between the gun heads of adjacent argon arc welding guns 1014 increases or decreases by one millimeter.

[0027] When in use, first adjust the height of the positioning assembly 6 according to the height of the dust bag support frame 5 to be welded, adjust the height of the telescopic rod 61 to a height that matches the height of the dust bag support frame 5, and then lock the position of the telescopic rod 61 with bolts; then, partially sleeve the rib cage 51 in the dust bag support frame 5 on the outside of the positioning assembly 6, place one end of the rib cage 51 on the top of the turntable 3, and then place the tray 53 on the top of the rib cage 51, at this time, the bottom of the tray 53 is just placed on the electromagnet plate 62 The top of the rib cage 51 is ensured to have two limit posts 63 between two adjacent longitudinal ribs. Since the longitudinal ribs are evenly distributed, after the limit posts 63 are located between any two longitudinal ribs, the welding seam positions of the rib cage 51 and the tray 53 correspond to the position of the argon arc welding gun 1014. After the electromagnet plate 62 is energized, the tray 53 can be adsorbed and fixed. At this point, the position of the dust bag support frame 5 is locked. The same operation is performed on other positions of the turntable 3 according to the above-mentioned installation method of the dust bag support frame 5. Next, the welding mechanism 10 that can adapt to the welding size is adjusted according to the size of the dust bag support skeleton 5 to be welded. During the adjustment: turning the adjustment knob 1016 drives the adjustment rod to rotate, so that the bevel gear 1015 synchronously drives the multiple bevel gears 1011 to rotate, and the multiple cross sliders 1017 synchronously move away from or approach the direction of the bevel gear 1015, and synchronously increase or decrease the distance between the gun heads of the argon arc welding gun 1014. Since the initial position of the gun head of the argon arc welding gun 1014 is a known value, according to the set rule, that is, the distance between the gun heads of adjacent argon arc welding guns 1014 increases or decreases by one millimeter for each movement of the pointer 1012 by a scale groove 1013. Therefore, at this time, the position of the argon arc welding gun 1014 is accurately adjusted based on the reference of the scale groove 1013 until the multiple long strip welding areas 54 on the dust bag support skeleton 5 and the gun head position of the argon arc welding gun 1014 can meet the welding requirements; then the position of the adjustment knob 1016 is locked to end the adjustment of the welding mechanism 10; Next, according to the size specification of the current dust bag support frame 5, the corresponding drive mechanism 11 is replaced accordingly, so that the drive mechanism 11 can push the argon arc welding gun 1014 in the welding mechanism 10 down to the position corresponding to the long strip welding area 54 of the dust bag support frame 5 to be welded. The replacement process of the drive mechanism 11 is to remove the nut between the locking stud 116 and the mounting plate 113, remove the arc drive plate 115, and then connect the arc drive plate 115 of the corresponding size to the mounting plate 113 again. Similarly, the installation method of the drive mechanism 11 on the other side is the same as the above method. At this time, the replacement work of the drive mechanism 11 is completed. When welding the dust bag support frame 5, the control box installed on the welding table 1 is used to control the servo motor 1 to start, the initial positions of the two welding mechanisms 10 are relative to the positions of two of the dust bag support frames 5, and the servo motor 1 rotates 180 degrees at a low speed and uniform speed, and the turntable 3 and the support mechanism 9 rotate synchronously. When the lifting rod 102 and the arc driving plate 115 just come into contact, the delay switch 103 located at the top of the lifting rod 102 for controlling the argon arc welding gun 1014 is triggered and turned on, and the argon arc welding gun 1014 starts to work. When the lifting rod 102 continues to slide along the bottom of the arc driving plate 115, the argon arc welding gun 1014 moves down at a uniform and low speed along the connection area between the rib cage 51 and the tray 53, that is, the top of the long strip welding area 54, and the long strip welding area 54 is welded. When the lifting rod 102 slides to the bottom of the arc driving plate 115, that is, when the servo motor rotates ninety degrees, the argon arc welding gun 1014 just moves to the bottom of the long strip welding area 54, and the long strip welding area 54 is completely welded. Servo motor 1 continues to rotate 90 degrees, and lifting rod 102 continues to slide along the bottom of arc-shaped driving plate 115. Lifting rod 102 is pushed by the elastic force of spring 104 and moves upward at a constant speed until it returns to the initial position. At this time, the welding work of dust bag support frame 5 at two positions is completed. When welding the dust bag support frame 5 at the other two positions, the preset program controls servo motor 2 to drive transmission shaft 2 96 to rotate 90 degrees, and the positions of the two welding mechanisms 10 are switched to the position facing the other two unwelded dust bag support frames 5, and then the locking mechanism locks the output shaft of servo motor 2, and then the above welding operation process is continued to complete the welding work again; During the welding process, the turntable 3 drives multiple exhaust gas treatment mechanisms 7 to work, and the gear 715 is driven by the ring gear 8 to rotate. The transmission 714 accelerates the input rotational force and drives the fan blades 716 to rotate rapidly. The suction force draws the welding fume through the air inlet 712. The harmful substances in the welding fume are filtered by the filter element 713 and then transported to the annular tube 73 through the connecting pipe 72. The annular tube 73 is located outside the dust bag support frame 5 that has been clamped and is to be welded. Since the welding fume carries a high heat, the hot air is evenly blown on the surface of the dust bag support frame 5 through the nozzle 74 to heat the dust bag support frame 5. At the same time, the nozzle 74 in the exhaust gas treatment mechanism 7 at the unwelded position can also spray out room temperature air. Since the nozzles 74 are distributed in a ring array and are all arranged toward the long strip welding area 54, the blown air can form a barrier around the dust bag support frame 5 being welded to prevent the welding fume from flying around, and the welding fume purification process is completed.

[0028] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0029] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An argon arc welding device for a dust bag support frame, comprising a welding table, an operation window opened on the front of the welding table and a dust bag support frame, wherein a servo motor 1 is fixedly arranged inside the welding table, and the output shaft of the servo motor 1 rotates through the welding table and is fixedly connected to a turntable, characterized in that: A plurality of exhaust gas through hole areas are evenly arranged on the top of the turntable, and a positioning component for limiting the position of the dust bag support frame is fixedly arranged at the top center position of each exhaust gas through hole area to facilitate subsequent welding operations; a plurality of exhaust gas treatment mechanisms for purifying welding fumes and reusing the heat of welding fumes are arranged at the bottom of the turntable and at positions corresponding to the plurality of positioning components; a gear ring for cooperating with the exhaust gas treatment mechanism to complete the welding fume treatment work is fixedly arranged on the top of the welding table; a supporting mechanism is arranged at the top center position of the turntable, and welding mechanisms for performing multi-point synchronous welding of the dust bag support frame are arranged on both sides of the outer wall of the supporting mechanism, and a driving mechanism for driving the welding mechanism to complete the synchronous welding action is also arranged above the supporting mechanism.

2. The argon arc welding equipment for the dust bag support frame according to claim 1 is characterized in that: The positioning assembly includes a telescopic rod and an electromagnet plate fixedly arranged at the top of the telescopic rod. Two limit columns are detachably arranged on the side wall of the electromagnet plate to ensure that the multiple welding point positions of the dust bag support frame and the welding positions of the welding mechanism correspond one to one.

3. The argon arc welding equipment for dust bag support frame according to claim 1 is characterized in that: The exhaust gas treatment mechanism includes a purification component arranged at the bottom of the turntable and a preheating component arranged at one side of the purification component for spraying air toward the dust bag support frame. The purification component and the preheating component are connected by a connecting pipe for conveying the air purified by the purification component to the preheating component. The preheating assembly comprises an annular tube fixedly arranged above the turntable through a mounting bracket, and a plurality of nozzles connected to the interior of the annular tube are evenly and fixedly arranged on the outer wall of the annular tube.

4. The argon arc welding equipment for the dust bag support frame according to claim 3 is characterized in that: The purification assembly includes a purification cylinder detachably arranged at the bottom of the turntable by bolts, a cover plate connected to the inner wall of the purification cylinder by threads, and a plurality of air inlets evenly arranged on the top of the cover plate. A filter element for purifying welding fumes is fixedly arranged inside the purification cylinder. A transmission is connected to the bottom of the purification cylinder by a flange. A gear meshing with a gear ring is fixedly arranged on the input shaft of the transmission. The output shaft of the transmission rotates and passes through the purification cylinder and is fixedly provided with fan blades. The transmission is used to accelerate the power input by the input shaft and output it through the output shaft.

5. The argon arc welding equipment for dust bag support frame according to claim 1, characterized in that: The supporting mechanism includes a transmission shaft 1 fixedly arranged at the top center position of the turntable through a flange and a motor box fixedly arranged at the top of the transmission shaft 1, a servo motor 2 is fixedly arranged inside the motor box, the output shaft of the servo motor 2 rotates and passes through the motor box and is connected to the connecting shaft through a coupling, a locking mechanism for locking or releasing the output shaft of the servo motor 2 is fixedly arranged on the top of the motor box, a bearing frame is connected to the outer wall of the motor box through a flange, a transmission shaft 2 fixedly connected to the top of the connecting shaft is rotatably arranged inside the bearing frame, support arms for installing a welding mechanism are fixedly arranged on both sides of the outer wall of the transmission shaft 2, and a cross-shaped through groove is opened inside the support arm.

6. The argon arc welding equipment for the dust bag support frame according to claim 5 is characterized in that: The welding mechanism includes a welding component for welding the dust bag support frame and a hoisting unit for driving the welding component to rise and fall; The hoisting unit includes a cross slider 1 slidably arranged inside a cross-shaped through groove and a lifting rod slidably passing through the cross slider 1, the cross slider 1 and the cross through groove are locked in position by fastening bolts, a delay switch for controlling the start or shut down of the welding component is fixedly arranged on the top of the lifting rod, and a connecting frame is fixedly arranged on the bottom end of the lifting rod, a limit ring is fixedly arranged on the outer wall of the lifting rod and located above the cross slider 1, and a spring is provided on the outer wall of the lifting rod and located between the limit ring and the cross slider 1.

7. The argon arc welding equipment for the dust bag support frame according to claim 6 is characterized in that: The welding component includes a carrier plate fixedly arranged at the bottom end of the connecting frame and a plurality of cross slides evenly arranged at the bottom of the carrier plate, a plurality of long through grooves evenly arranged on the top of the carrier plate corresponding to the positions of the cross slides and connected to the inside thereof, a transmission groove is arranged at the center of the carrier plate, and a welding unit for welding one of the welding positions of the dust bag support frame is arranged inside each of the cross slides; The welding unit includes a screw rotatably arranged inside a cross slide and a bevel gear fixedly arranged at one end of the screw and located inside a transmission groove. A cross slider 2 is threadedly sleeved on the outer wall of the screw. The cross slider 2 is slidably arranged inside the cross slide. A pointer and a argon arc welding gun are fixedly arranged on the top and bottom of the cross slider 2, respectively.

8. The argon arc welding equipment for the dust bag support frame according to claim 7, characterized in that: A scale line groove for indicating the moving distance of the pointer is provided on the top of the carrier plate and on one side of the long through slot; a helical gear plate is rotatably provided inside the transmission slot and is meshed with a plurality of bevel gears at the same time; an adjusting rod is fixedly provided on the top of the helical gear plate; the top end of the adjusting rod rotates through the carrier plate and is fixedly provided with an adjusting knob.

9. The argon arc welding equipment for dust bag support frame according to claim 1, characterized in that: The driving mechanism comprises a disc fixedly arranged at the bottom of the carrier and mounting slots symmetrically arranged at both sides of the top of the disc, wherein a driving unit for driving the welding mechanism to be lifted and lowered is detachably arranged inside the mounting slot; The drive unit includes a mounting plate connected in a mounting groove by fastening bolts and stud mounting holes on both sides of the top of the mounting plate. An arc-shaped driving plate is arranged below the mounting plate. Studs matching the stud mounting holes are fixedly arranged on both sides of the top of the arc-shaped driving plate. The studs are locked in position by nuts and the mounting plate.

10. The argon arc welding equipment for dust bag support frame according to claim 1, characterized in that: The dust bag support frame includes a rib cage, and a top cover and a tray are respectively welded to both ends of the rib cage. After the rib cage and the tray are welded, a plurality of long strip welding areas are formed.

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