Girth welding equipment for pressure vessel production

Abstract

The invention discloses girth welding equipment for pressure vessel production, belongs to the technical field of welding, and aims to solve the problems that the overall production efficiency of welding is low, and the health of operators can be threatened when flue gas is directly discharged into a working environment. A welding device is arranged on the rack, a guide rod is fixedly connected into the rack below the welding device, a servo motor and a first belt are fixedly connected to the bottom end of the rack below the guide rod, the first belt is arranged on the outer side of the extending end of the servo motor in a sleeving mode, a rotating shaft is arranged in the first belt, and a driving gear is arranged on the outer side of the rotating shaft in a sleeving mode. By means of the device, left-right alternate feeding can be achieved, the waiting time is shortened, the welding process is more continuous and efficient, meanwhile, smoke generated during welding can be collected, emission of harmful gas and smoke dust is reduced, and air pollution of a welding area is reduced.

Description

Technical Field

[0001] The invention relates to the technical field of welding, in particular to a circumferential seam welding device for producing pressure vessels. Background Art

[0002] A pressure vessel is a closed device with a certain bearing pressure, which is mainly divided into reaction vessels, heat transfer vessels, separation vessels and storage and transportation containers. In the process of producing pressure vessels, welding is a crucial process. The quality of welding is directly related to the pressure bearing capacity, sealing performance and service life of the pressure vessel. However, the existing welding equipment still has certain shortcomings when used.

[0003] For example, a welding device for a pressure vessel cylinder with announcement number CN219787234U is provided, which cooperates with a second drive motor, a rotating rod, a first transmission wheel, a transmission belt, a second transmission wheel, a rotating shaft and a roller. Starting the second drive motor can drive the first transmission wheel to rotate, and then the transmission belt drives the second transmission wheel to rotate, so that the rotating shaft drives the roller to rotate synchronously, and the pressure vessel is flipped over, which is convenient for welding at the annular seam interface of the pressure vessel and reduces the work intensity of the staff. However, after completing the welding of a pressure vessel, the device must be removed from the working area before the next workpiece to be welded can be installed, resulting in a reduction in overall production efficiency. At the same time, a large amount of smoke will be generated during welding. If the smoke is not recovered and directly discharged into the working environment, it will pose a threat to the health of the operator and may also cause pollution to the environment.

[0004] Therefore, we propose a girth welding device for pressure vessel production to solve the above problems. Summary of the invention

[0005] The purpose of the present invention is to provide a circumferential seam welding device for the production of pressure vessels to solve the problem proposed in the above-mentioned background technology that the devices currently on the market must be removed from the working area after completing the welding of a pressure vessel before the next workpiece to be welded can be installed, resulting in a decrease in overall production efficiency. At the same time, a large amount of smoke will be generated during welding. If the smoke is not recovered and directly discharged into the working environment, it will pose a threat to the health of the operators and may also cause pollution to the environment.

[0006] To achieve the above object, the present invention provides the following technical solution: A girth welding device for pressure vessel production, comprising a frame, a welding device is fixedly connected to the top of the frame by screws, a guide rod is fixedly connected to the frame below the welding device, and a servo motor is fixedly connected to the bottom of the frame below the guide rod;

[0007] Also includes:

[0008] A first belt is sleeved on the outer side of the protruding end of the servo motor, a rotating shaft is arranged inside the first belt, and a driving gear is sleeved on the outer side of the rotating shaft;

[0009] The smoke recovery mechanism is symmetrically arranged at both ends of the rotating shaft to realize the recovery and purification of smoke during subsequent welding;

[0010] A workbench is slidably arranged on the outside of the guide rod, a rack is fixedly connected to the bottom end of the workbench, and a cross bar is fixedly connected to the side of the rack, a slider is sleeved on the outside of the cross bar, and a tooth block is fixedly connected to the bottom end of the slider, and a fixed block is fixedly connected to the side wall of the slider, a resisting block is movably connected inside the fixed block, and a slide groove is opened on the frame on the side of the fixed block;

[0011] The clamping mechanism is fixedly arranged on the top of the workbench and is used to clamp the workpiece. Two clamping mechanisms are symmetrically arranged, and a collection box is fixedly installed on the workbench between the two clamping mechanisms, and an air blowing pipe is fixedly installed on the upper end of the collection box.

[0012] Preferably, the rotating shaft is rotatably connected to the frame, and the rotating shaft and the servo motor are symmetrically arranged at both ends of the first belt, the rotating shaft is fixedly connected to the driving gear, and two driving gears are symmetrically arranged about the rotating shaft, and there are two groups of slide grooves symmetrically arranged on the frame, and the slide grooves are composed of a section of straight groove connected to a diagonal groove.

[0013] Preferably, the smoke recovery mechanism includes a fixed frame, a piston cylinder, a piston plate, a piston rod, a connecting frame, a straight groove, a connecting rod and a rotating plate. The fixed frame is fixedly arranged on the side of the frame, and the piston cylinder is fixedly installed in the fixed frame. The piston cylinder is slidably connected with the piston plate, and the piston plate is fixedly connected with the piston rod. The bottom end of the piston rod extends through the piston cylinder and is fixedly connected to the connecting frame. The connecting frame is provided with a straight groove, and the connecting rod is slidably connected with the straight groove, and the rotating plate is fixedly connected to the side wall of the connecting rod.

[0014] Preferably, the smoke recovery mechanism further comprises a processing box, a shielding cover, air holes and a filter plate;

[0015] A processing box is fixedly arranged at the bottom end of the frame, and a filter plate is fixedly installed in the processing box;

[0016] The shielding cover is fixedly arranged on the side wall of the welding device. The shielding cover is arranged in an arc-shaped structure. Two shielding covers are symmetrically arranged with respect to the welding device, and air holes are opened on the two shielding covers.

[0017] Preferably, the rotating plate is fixedly connected to the rotating shaft, and the two rotating plates are arranged opposite to each other, the piston rod is slidably connected to the piston cylinder, and the air inlet ends of the two piston cylinders are connected to the air outlet end box of the processing box through a one-way flow pipe, and the air inlet end of the processing box is connected to the air holes on the shielding cover through a one-way flow pipe.

[0018] Preferably, two racks are symmetrically arranged about the workbench, and the racks correspond to the driving gears one by one. The racks and the tooth blocks are both meshed with the driving gears, and the slider on the tooth block is slidably connected to the cross bar. A compression spring is connected between the slider and the cross bar, and an elastic telescopic structure is formed between the slider and the cross bar through the compression spring. The compression spring is sleeved on the outside of the cross bar, and two cross bars and sliders are symmetrically arranged about the rack.

[0019] Preferably, an inclined surface is provided at one end of the abutment block, and an auxiliary spring is connected between the abutment block and the fixed block, and an elastic telescopic structure is formed between the abutment block and the fixed block through the auxiliary spring.

[0020] Preferably, the clamping mechanism includes a bracket, a slot, a moving part, a guide rod, a vertical plate, an auxiliary gear and a second belt. The bracket is fixedly arranged on the top of the workbench and is provided with a slot. The moving part is slidably connected in the slot, and the guide rod is fixedly connected to the side wall of the bottom end of the moving part. The outer pipe of the guide rod is nested and connected with the vertical plate, and the auxiliary gear is rotatably installed on the side wall of the vertical plate, and the second belt is sleeved on the outer side of the shaft end of the auxiliary gear.

[0021] Preferably, the clamping mechanism also includes a positioning plate, a support, a side plate, an electric push rod, a clamping plate and a rotating rod, the positioning plate is fixedly connected to the movable part, and the top end of the positioning plate extends through the bracket and is fixedly connected to the support, the side plate is rotatably installed in the support, and the electric push rod is fixedly installed on the side wall of the side plate, and the output end of the electric push rod extends through the support and is fixedly connected to the clamping plate, the rotating rod is fixedly arranged in the second belt, and one end of the rotating rod extends through the support and is fixedly connected to the side wall of the side plate.

[0022] Preferably, the movable part is arranged in an "L"-shaped structure, and the guide rod on the movable part corresponds to the slide groove, the guide rod one end away from the movable part extends into the slide groove, and the guide rod is slidably connected to the slide groove, and the guide rod is fixedly connected to the vertical plate, the auxiliary gear corresponds to the resistance block, and the axial end of the auxiliary gear and the rotating rod are symmetrically arranged at both ends of the second belt, and the rotating rod is rotatably connected to the support, the bracket, slot, movable part, guide rod, vertical plate, auxiliary gear and second belt, positioning plate, support, side plate, electric push rod, clamping plate and rotating rod are all symmetrically arranged with two about the collecting box, and the blowing pipe on the collecting box is symmetrically arranged with two groups, and the two blowing pipes are connected with the air outlet end of the piston cylinder through a one-way flow pipe.

[0023] Compared with the prior art, the beneficial effects of the present invention are: the circumferential seam welding equipment for pressure vessel production can realize left-right alternating feeding, reduce waiting time, make the welding process more continuous and efficient, and at the same time can collect the fume generated during welding, reduce the emission of harmful gases and smoke, and reduce air pollution in the welding area. The specific contents are as follows:

[0024] 1. A driving gear and a rack are provided. The shaft is rotated forward and reversely to drive the driving gear to rotate, so that the driving gear meshes with the rack to move, and the rack drives the workbench to move back and forth along the guide rod, thereby realizing left and right alternating feeding, which can reduce waiting time and make the welding process more continuous and efficient.

[0025] 2. A crossbar, a slider and a tooth block are provided. When the worktable moves, the guide rod will slide along the slide groove, thereby driving the vertical plate to move upward, so that the vertical plate drives the auxiliary gear to move upward. When the workpiece reaches the predetermined welding position, the tooth block is meshed with the driving gear, and the auxiliary gear is aligned with the resistance block. As the driving gear rotates, the meshing tooth block moves, so that the tooth block drives the slider to slide along the crossbar and squeezes the compression spring to contract. When the slider moves, it drives the fixed block to move, so that the fixed block drives the resistance block to move. At this time, the right-angled side of the resistance block is meshed with the auxiliary gear. Thereby, the auxiliary gear is driven to rotate. After the driving gear is separated from the tooth block, the slider will reset and move under the elastic force of the compression spring, so that the fixed block drives the resistance block to reset and move, and the inclined surface on the resistance block will slide against the surface of the auxiliary gear, thereby squeezing and shrinking it into the inside of the fixed block, and squeezing the auxiliary spring to shrink. At this time, the auxiliary gear stops rotating, and so on. The auxiliary gear drives the rotating rod to rotate through the second belt, and the rotating rod drives the side plate, the electric push rod and the clamping plate to rotate, so that the clamping plate drives the workpiece to rotate, shortening the welding cycle and improving the overall operation efficiency of the production line.

[0026] 3. A connecting frame, a connecting rod and a rotating plate are provided. When the rotating shaft rotates forward, the rotating shaft will drive the rotating plate to rotate, so that the rotating plate drives the connecting rod to slide in the straight groove, thereby driving the connecting frame to move back and forth. The connecting frame will drive the piston rod to move, so that the piston rod pulls the piston plate to slide in the piston cylinder. At this time, harmful substances are filtered by the filter plate and trapped. The purified gas will be sucked into the piston cylinder, and the suction force generated by the movement of the piston plate will drive the flow of gas in the processing box, thereby sucking the fume generated during welding into the processing box for processing. Then, when the piston rod moves in the opposite direction, the gas in the piston cylinder is transported to the blowing pipe, and then blown out by the blowing pipe to clean the upper surface of the collection box, ensuring the cleanliness and safety of the working environment. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1It is a schematic diagram of the overall structure of the present invention;

[0028] Figure 2 It is a bottom view structural schematic diagram of the present invention;

[0029] Figure 3 For the present invention Figure 2 The enlarged structural diagram at A in the middle;

[0030] Figure 4 It is a schematic diagram of the internal structure of the frame of the present invention;

[0031] Figure 5 For the present invention Figure 4 The enlarged structural diagram at B in the middle;

[0032] Figure 6 This is a front view structural schematic diagram of the workbench of the present invention;

[0033] Figure 7 It is a schematic diagram of the overall structure of the rack of the present invention;

[0034] Figure 8 For the present invention Figure 7 The enlarged structural diagram at C in the middle;

[0035] Fig. 9 It is a partial enlarged structural schematic diagram of the clamping mechanism of the present invention;

[0036] Fig.10 For the present invention Fig. 9 The enlarged structural diagram at D in the middle;

[0037] Fig.11 It is a partially enlarged structural schematic diagram of the smoke recovery mechanism of the present invention;

[0038] Fig.12 This is a schematic diagram of the internal structure of the processing box of the present invention;

[0039] Fig.13 It is a schematic diagram of the overall structure of the air blowing pipe of the present invention.

[0040] In the figure: 1, frame; 101, slide; 2, welding device; 3, guide rod; 4, servo motor; 5, first belt; 6, rotating shaft; 7, driving gear; 8, smoke recovery mechanism; 801, fixed frame; 802, piston cylinder; 803, piston plate; 804, piston rod; 805, connecting frame; 806, straight groove; 807, connecting rod; 808, rotating plate; 809, processing box; 810, shielding cover; 811, air hole; 812, filter plate; 9, workbench; 10, rack; 11, cross bar; 1 2. Slider; 13. Tooth block; 14. Fixed block; 15. Resistance block; 16. Clamping mechanism; 1601. Bracket; 1602. Slot; 1603. Moving part; 1604. Guide rod; 1605. Vertical plate; 1606. Auxiliary gear; 1607. Second belt; 1608. Positioning plate; 1609. Support; 1610. Side plate; 1611. Electric push rod; 1612. Clamp; 1613. Rotating rod; 17. Compression spring; 18. Auxiliary spring; 19. Collecting box; 20. Blowing tube. DETAILED DESCRIPTION

[0041] 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.

[0042] Example 1: Please refer to Figure 1-Figure 6 As shown, the present invention provides a technical solution: a circumferential seam welding device for producing pressure vessels, comprising a frame 1, the top of the frame 1 is fixedly connected to a welding device 2 by screws, and a guide rod 3 is fixedly connected to the frame 1 below the welding device 2, and a servo motor 4 is fixedly connected to the bottom end of the frame 1 below the guide rod 3.

[0043] This technical solution utilizes the setting of the guide rod 3 and the servo motor 4. When in use, the frame 1 needs to be placed on a flat and open ground first. Then the staff needs to perform preliminary spot welding on the workpiece to be welded, preliminarily position and fix the workpiece, and then use the clamping mechanism 16 to clamp the workpiece to ensure that the position of the workpiece is stable during welding. Through the setting of the servo motor 4, the clamped workpiece can be transported to the bottom of the welding device 2, the welding equipment is started, and the welding gun starts to weld according to the preset trajectory. After welding is completed, the workpiece can be removed.

[0044] Embodiment 2: The technical content disclosed in this embodiment is an improvement made on the basis of the above embodiment 1. After the existing device completes the welding of a pressure vessel, it must be removed from the working area before the next workpiece to be welded can be installed, resulting in a decrease in overall production efficiency. Figure 1-Figure 4 and Figure 6-Figure 10As shown, a feeding component of a welding device is disclosed, wherein a first belt 5 is provided, which is sleeved on the outside of the protruding end of a servo motor 4, a rotating shaft 6 is provided inside the first belt 5, and a driving gear 7 is sleeved on the outside of the rotating shaft 6, a workbench 9 is slidably provided on the outside of a guide rod 3, a rack 10 is fixedly connected to the bottom end of the workbench 9, and a cross bar 11 is fixedly connected to the side of the rack 10, a slider 12 is sleeved on the outside of the cross bar 11, and a tooth block 13 is fixedly connected to the bottom end of the slider 12, and a side wall of the slider 12 is fixedly connected to a fixed block 14, a resisting block 15 is movably connected inside the fixed block 14, and a slide groove 101 is provided on the frame 1 on the side of the fixed block 14, a clamping mechanism 16 is fixedly provided on the top of the workbench 9, and is used to clamp the workpiece, There are two symmetrical structures 16, and a collection box 19 is fixedly installed on the workbench 9 between the two clamping mechanisms 16, and an air blowing pipe 20 is fixedly installed on the upper end of the collection box 19, the rotating shaft 6 is rotatably connected to the frame 1, and the rotating shaft 6 and the servo motor 4 are symmetrically arranged at both ends of the first belt 5, the rotating shaft 6 is fixedly connected to the driving gear 7, and the driving gear 7 is symmetrically arranged with respect to the rotating shaft 6. There are two groups of slidable grooves 101 on the frame 1, and the slidable grooves 101 are connected by a section of straight grooves and oblique grooves, there are two symmetrical racks 10 about the workbench 9, and the racks 10 correspond to the driving gear 7 one by one, the racks 10 and the tooth blocks 13 are meshed with the driving gear 7, and the sliders 12 on the tooth blocks 13 are slidably connected with the cross bars 11, and the sliders 12 and the cross bars are connected. A compression spring 17 is connected between the rods 11, and the slider 12 and the cross bar 11 form an elastic telescopic structure through the compression spring 17. The compression spring 17 is sleeved on the outside of the cross bar 11. The cross bar 11 and the slider 12 are symmetrically provided with two about the rack 10. An inclined surface is provided at one end of the resistance block 15, and an auxiliary spring 18 is connected between the resistance block 15 and the fixed block 14, and an elastic telescopic structure is formed between the resistance block 15 and the fixed block 14 through the auxiliary spring 18. The clamping mechanism 16 includes a bracket 1601, a slot 1602, a moving part 1603, a guide rod 1604, a vertical plate 1605, an auxiliary gear 1606 and a second belt 1607. The bracket 1601 is fixedly arranged on the top of the workbench 9, and a slot is provided on the bracket 1601 1602, a moving part 1603 is slidably connected in the slot 1602, and a guide rod 1604 is fixedly connected to the side wall of the bottom end of the moving part 1603, a vertical plate 1605 is nested and connected to the outer pipe of the guide rod 1604, and an auxiliary gear 1606 is rotatably installed on the side wall of the vertical plate 1605, and a second belt 1607 is sleeved on the outer side of the shaft end of the auxiliary gear 1606, the clamping mechanism 16 also includes a positioning plate 1608, a support 1609, a side plate 1610, an electric push rod 1611, a clamping plate 1612 and a rotating rod 1613, the positioning plate 1608 is fixedly connected to the moving part 1603, and the top end of the positioning plate 1608 penetrates the extended bracket 1601 and is fixedly connected to the support 1609, and the side plate 1610 is rotatably installed in the support 1609,The side wall of the side plate 1610 is fixedly installed with an electric push rod 1611, and the output end of the electric push rod 1611 extends through the support 1609 and is fixedly connected to the clamping plate 1612. The rotating rod 1613 is fixedly set in the second belt 1607, and one end of the rotating rod 1613 extends through the support 1609 and is fixedly connected to the side wall of the side plate 1610. The moving member 1603 is set in an "L"-shaped structure, and the guide rod 1604 on the moving member 1603 corresponds to the slide groove 101, and the end of the guide rod 1604 away from the moving member 1603 extends into the slide groove 101, and the guide rod 1604 is slidably connected to the slide groove 101, and the guide rod 1604 is fixedly connected to the vertical plate 1605, and the auxiliary gear 160 6 corresponds to the abutment block 15, and the shaft ends of the auxiliary gear 1606 and the rotating rod 1613 are symmetrically arranged at the two ends of the second belt 1607, and the rotating rod 1613 is rotatably connected with the support 1609, and the bracket 1601, the slot 1602, the moving part 1603, the guide rod 1604, the vertical plate 1605, the auxiliary gear 1606 and the second belt 1607, the positioning plate 1608, the support 1609, the side plate 1610, the electric push rod 1611, the clamping plate 1612 and the rotating rod 1613 are all symmetrically arranged with two about the collection box 19, and the blowing pipe 20 on the collection box 19 is symmetrically arranged with two groups, and the two blowing pipes 20 are connected with the gas outlet end of the piston cylinder 802 through a one-way flow pipe.

[0045] In this technical solution, Figure 1 As shown, by using the arrangement of the rack 10, the cross bar 11, the slider 12 and the tooth block 13, when the driving gear 7 is meshed with the tooth block 13, the tooth block 13 will drive the slider 12 to move back and forth along the cross bar 11, thereby stopping the workbench 9 from moving. At this time, the workpiece on the workbench 9 is aligned with the welding device 2. When the driving gear 7 is reversed, the rack 10 will drive the workbench 9 to move in the opposite direction, so that the welded workpiece can be removed, and the unwelded workpiece at the other end of the workbench 9 will be moved to the bottom of the welding device 2 for welding, thereby realizing alternating feeding, reducing waiting time and downtime, and improving production efficiency.

[0046] Its use is as Figure 2-Figure 4 and Figure 6-Figure 10According to the technical solution shown, the workpiece to be welded is first placed between the two clamping mechanisms 16, and then the electric push rod 1611 is started, which drives the clamping plates 1612 to move closer to each other to clamp the workpiece. Then the servo motor 4 is started, and the servo motor 4 drives the rotating shaft 6 to rotate through the first belt 5, and the rotating shaft 6 drives the driving gear 7 to rotate, so that the driving gear 7 engages and drives the rack 10 to move, and the rack 10 drives the worktable 9 to move laterally along the guide rod 3, thereby driving the clamping mechanism 16 to move as a whole. During the movement, the guide rod 1604 first slides along the oblique groove section of the slide groove 101, thereby pushing the moving The moving member 1603 moves, so that the moving member 1603 slides upward along the slot 1602, and at the same time drives the vertical plate 1605, the auxiliary gear 1606, the second belt 1607, the positioning plate 1608, the support 1609 and the side plate 1610 to move upward at the same time, so that the workpiece between the two clamping plates 1612 gradually moves upward while moving horizontally, and then drives the workpiece to approach the welding device 2. When the guide rod 1604 moves to the straight groove section of the slide groove 101, the workpiece at this time will be between the shielding cover 810, and the auxiliary gear 1606 will mesh with the abutment block 15, and the driving gear 7 will mesh with the tooth block 13;

[0047] At this time, the driving gear 7 continues to rotate, so that the driving gear 7 meshes with the tooth block 13, and the tooth block 13 drives the slider 12 to slide along the cross bar 11, thereby driving the fixed block 14 and the contact block 15 to move while squeezing the compression spring 17 to contract, and the contact block 15 will resist the auxiliary gear 1606, thereby driving the auxiliary gear 1606 to rotate, and the rotating auxiliary gear 1606 will drive the rotating rod 1613 to rotate through the second belt 1607, and then the rotating rod 1613 will drive the side plate 1610, the electric push rod 1611 and the clamping plate 1612 to rotate at the same time, thereby driving the workpiece to rotate. When the moving gear 7 is separated from the tooth block 13, the elastic force of the compression spring 17 will push the slider 12 to reset, thereby driving the fixed block 14 and the contact block 15 to reset. At this time, the inclined surface on the contact block 15 fits with the teeth on the auxiliary gear 1606, so that the contact block 15 slides upward and shrinks into the inside of the fixed block 14, and the contact block 15 squeezes the auxiliary spring 18 to shrink. After the contact block 15 is separated from the teeth on the auxiliary gear 1606, the auxiliary spring 18 pushes the contact block 15 to reset, and so on, so that the workpiece always rotates in one direction, ensuring the stability of the welding process;

[0048] During the welding process, as the workpiece rotates, the welding slag generated by the welding will fall into the collection box 19 under the action of gravity for collection.

[0049] Embodiment 3: The technical content disclosed in this embodiment is a further improvement based on the above-mentioned embodiments 1 and 2. Since a large amount of fume will be generated during welding, if the fume is not recovered and directly discharged into the working environment, it will pose a threat to the health of the operators and may also cause pollution to the environment. In order to further solve this technical problem, this technical solution is as follows: Figure 5 and Figure 11-13 As shown, a fume recovery component of a welding device is disclosed, wherein a fume recovery mechanism 8 is symmetrically arranged at both ends of a rotating shaft 6, and is used to realize fume recovery and purification during subsequent welding. The fume recovery mechanism 8 comprises a fixed frame 801, a piston cylinder 802, a piston sheet 803, a piston rod 804, a connecting frame 805, a straight groove 806, a connecting rod 807 and a rotating plate 808. The fixed frame 801 is fixedly arranged on the side of a frame 1, and a piston cylinder 802 is fixedly installed in the fixed frame 801, a piston sheet 803 is slidably connected in the piston cylinder 802, and a piston rod 804 is fixedly connected to the piston sheet 803, and the bottom end of the piston rod 804 extends through the piston cylinder 802 and is fixedly connected to the connecting frame 805, and a straight groove 806 is provided on the connecting frame 805, a connecting rod 807 is slidably connected in the straight groove 806, and a rotating plate 808 is fixedly connected to the side wall of the connecting rod 807. 08, the smoke recovery mechanism 8 also includes a processing box 809, a shielding cover 810, an air hole 811 and a filter plate 812. The processing box 809 is fixedly arranged at the bottom end of the frame 1, and a filter plate 812 is fixedly installed in the processing box 809. The shielding cover 810 is fixedly arranged on the side wall of the welding device 2. The shielding cover 810 is an arc-shaped structure, and there are two shielding covers 810 symmetrically arranged about the welding device 2, and the two shielding covers 810 are both provided with air holes 811. The rotating plate 808 is fixedly connected to the rotating shaft 6, and the two rotating plates 808 are arranged in opposite directions to each other. The piston rod 804 is slidably connected to the piston cylinder 802, and the air inlet ends of the two piston cylinders 802 are connected to the air outlet end box of the processing box 809 through a one-way flow pipe, and the air inlet end of the processing box 809 is connected to the air hole 811 on the shielding cover 810 through a one-way flow pipe.

[0050] In this technical solution, Figure 5 As shown, by utilizing the setting of the connecting rod 807 and the rotating plate 808, since the two rotating plates 808 are set in opposite directions, the two piston rods 804 will move alternately, thereby continuously sucking the smoke generated during welding, avoiding the accumulation and diffusion of smoke in the workshop, and improving the reliability and practicality of the equipment.

[0051] Its use is as Figure 11-13According to the technical solution shown, first, the rotation of the rotating shaft 6 will drive the rotating plate 808 to rotate, and the rotating plate 808 will drive the connecting rod 807 to slide in the straight groove 806, so that the connecting frame 805 moves, and the connecting frame 805 will pull the piston rod 804 to move, so that the piston rod 804 drives the piston plate 803 to slide in the piston cylinder 802, so as to suck the purified gas in the processing box 809. The suction force generated at this time will drive the gas flow in the processing box 809, so that the smoke generated during welding enters the air hole 811 on the shielding cover 810, and then the smoke in the air hole 811 will enter the processing box 809. Through the setting of the filter plate 812, the smoke can be filtered, and the shielding cover 810 plays a certain shielding role to prevent the welding slag from splashing during welding.

[0052] As the rotating plate 808 continues to rotate, the connecting frame 805 will push the piston rod 804 and the piston plate 803 to move in the opposite direction, thereby transporting the gas stored in the piston cylinder 802 to the blowing pipe 20 above the collecting box 19 through the one-way flow pipe, and then spraying it out from the blowing pipe 20, thereby cleaning the surface of the collecting box 19 to prevent welding slag from remaining.

[0053] The contents not described in detail in this specification belong to the prior art known to professional and technical personnel in this field.

[0054] Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments, or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A girth welding device for pressure vessel production, comprising a frame (1), the top end of the frame (1) being fixedly connected to a welding device (2) by screws, a guide rod (3) being fixedly connected inside the frame (1) below the welding device (2), and a servo motor (4) being fixedly connected to the bottom end of the frame (1) below the guide rod (3); It is characterized in that Also includes: A first belt (5) is sleeved on the outer side of the protruding end of the servo motor (4); a rotating shaft (6) is arranged inside the first belt (5), and a driving gear (7) is sleeved on the outer side of the rotating shaft (6); A smoke recovery mechanism (8) is symmetrically arranged at both ends of the rotating shaft (6) and is used to recover and purify the smoke during subsequent welding; A workbench (9) is slidably arranged on the outer side of the guide rod (3); a rack (10) is fixedly connected to the bottom end of the workbench (9); a crossbar (11) is fixedly connected to the side of the rack (10); a slider (12) is sleeved on the outer side of the crossbar (11); a tooth block (13) is fixedly connected to the bottom end of the slider (12); a fixed block (14) is fixedly connected to the side wall of the slider (12); a resisting block (15) is movably connected inside the fixed block (14); and a slide groove (101) is provided on the frame (1) on the side of the fixed block (14); A clamping mechanism (16) is fixedly arranged on the top of a workbench (9) and is used to clamp a workpiece. Two clamping mechanisms (16) are symmetrically arranged, and a collection box (19) is fixedly installed on the workbench (9) between the two clamping mechanisms (16), and an air blowing pipe (20) is fixedly installed on the upper end of the collection box (19).

2. The circumferential seam welding equipment for pressure vessel production according to claim 1, characterized in that: The rotating shaft (6) is rotatably connected to the frame (1), and the rotating shaft (6) and the servo motor (4) are symmetrically arranged at the two ends of the first belt (5). The rotating shaft (6) is fixedly connected to the driving gear (7), and two driving gears (7) are symmetrically arranged about the rotating shaft (6). The sliding grooves (101) on the frame (1) are symmetrically arranged in two groups, and the sliding grooves (101) are composed of a straight groove connected to an oblique groove.

3. The circumferential seam welding equipment for pressure vessel production according to claim 1, characterized in that: The smoke recovery mechanism (8) comprises a fixed frame (801), a piston cylinder (802), a piston sheet (803), a piston rod (804), a connecting frame (805), a straight groove (806), a connecting rod (807) and a rotating plate (808); the fixed frame (801) is fixedly arranged on the side of the frame (1), and the piston cylinder (802) is fixedly installed in the fixed frame (801); the piston cylinder (802) is slidably connected with the piston sheet (803), and the piston sheet (803) is fixedly connected with the piston rod (804); the bottom end of the piston rod (804) extends through the piston cylinder (802) and is fixedly connected to the connecting frame (805); the connecting frame (805) is provided with a straight groove (806), the connecting rod (807) is slidably connected with the straight groove (806), and the side wall of the connecting rod (807) is fixedly connected with the rotating plate (808).

4. The circumferential seam welding equipment for pressure vessel production according to claim 3, characterized in that: The smoke recovery mechanism (8) also includes a processing box (809), a shielding cover (810), air holes (811) and a filter plate (812); A processing box (809) is fixedly arranged at the bottom end of the frame (1), and a filter plate (812) is fixedly installed in the processing box (809); A shielding cover (810) is fixedly arranged on a side wall of the welding device (2); the shielding cover (810) is arranged in an arc-shaped structure, and two shielding covers (810) are symmetrically arranged with respect to the welding device (2), and air holes (811) are provided on both shielding covers (810).

5. The circumferential seam welding equipment for pressure vessel production according to claim 3, characterized in that: The rotating plate (808) is fixedly connected to the rotating shaft (6), and the two rotating plates (808) are arranged opposite to each other, the piston rod (804) is slidably connected to the piston cylinder (802), and the air inlet ends of the two piston cylinders (802) are connected to the air outlet end box of the processing box (809) through a one-way flow pipe, and the air inlet end of the processing box (809) is connected to the air hole (811) on the shielding cover (810) through a one-way flow pipe.

6. The circumferential seam welding equipment for pressure vessel production according to claim 1, characterized in that: Two racks (10) are symmetrically arranged with respect to the workbench (9), and the racks (10) correspond to the driving gears (7) one by one. The racks (10) and the tooth blocks (13) are meshed with the driving gears (7), and the slider (12) on the tooth blocks (13) is slidably connected with the cross bar (11). A compression spring (17) is connected between the slider (12) and the cross bar (11), and an elastic telescopic structure is formed between the slider (12) and the cross bar (11) through the compression spring (17). The compression spring (17) is sleeved on the outer side of the cross bar (11), and two cross bar (11) and the slider (12) are symmetrically arranged with respect to the racks (10).

7. The circumferential seam welding equipment for pressure vessel production according to claim 1, characterized in that: One end of the resisting block (15) is provided with an inclined surface, and an auxiliary spring (18) is connected between the resisting block (15) and the fixed block (14), and an elastic telescopic structure is formed between the resisting block (15) and the fixed block (14) through the auxiliary spring (18).

8. The circumferential seam welding equipment for pressure vessel production according to claim 1, characterized in that: The clamping mechanism (16) comprises a bracket (1601), a slot (1602), a moving member (1603), a guide rod (1604), a vertical plate (1605), an auxiliary gear (1606) and a second belt (1607); the bracket (1601) is fixedly arranged on the top of the workbench (9), and the bracket (1601) is provided with a slot (1602); the moving member (1603) is slidably connected in the slot (1602), and the bottom side wall of the moving member (1603) is fixedly connected to the guide rod (1604); the outer pipe of the guide rod (1604) is nested and connected to the vertical plate (1605), and the side wall of the vertical plate (1605) is rotatably installed with the auxiliary gear (1606), and the outer side of the shaft end of the auxiliary gear (1606) is sleeved with a second belt (1607).

9. The circumferential seam welding equipment for pressure vessel production according to claim 8, characterized in that: The clamping mechanism (16) further comprises a positioning plate (1608), a support (1609), a side plate (1610), an electric push rod (1611), a clamping plate (1612) and a rotating rod (1613); the positioning plate (1608) is fixedly connected to the moving member (1603); the top end of the positioning plate (1608) extends through the bracket (1601) and is fixedly connected to the support (1609); the rotating device (1610) is arranged in the support (1609); A side plate (1610) is provided, and an electric push rod (1611) is fixedly installed on the side wall of the side plate (1610), and the output end of the electric push rod (1611) extends through the support (1609) and is fixedly connected to the clamping plate (1612), and the rotating rod (1613) is fixedly arranged in the second belt (1607), and one end of the rotating rod (1613) extends through the support (1609) and is fixedly connected to the side wall of the side plate (1610).

10. The circumferential seam welding equipment for pressure vessel production according to claim 9, characterized in that: The movable member (1603) is arranged in an "L"-shaped structure, and the guide rod (1604) on the movable member (1603) corresponds to the slide groove (101), and one end of the guide rod (1604) away from the movable member (1603) extends into the slide groove (101), and the guide rod (1604) is slidably connected to the slide groove (101), and the guide rod (1604) is fixedly connected to the vertical plate (1605), the auxiliary gear (1606) corresponds to the abutment block (15), and the shaft end of the auxiliary gear (1606) and the rotating rod (1613) are symmetrically arranged at two ends of the second belt (1607), and the rotating rod (1613) is connected to the support ( 1609) is rotatably connected, and the bracket (1601), the slot (1602), the moving part (1603), the guide rod (1604), the vertical plate (1605), the auxiliary gear (1606) and the second belt (1607), the positioning plate (1608), the support (1609), the side plate (1610), the electric push rod (1611), the clamping plate (1612) and the rotating rod (1613) are symmetrically arranged with two about the collection box (19), and the blowing pipe (20) on the collection box (19) is symmetrically arranged with two groups, and the two blowing pipes (20) are connected with the air outlet end of the piston cylinder (802) through a one-way flow pipeline.

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