A valve member positioning plasma arc welding apparatus

Abstract

The application discloses a valve piece positioning type plasma arc welding equipment and relates to the technical field of plasma arc welding machines.The valve piece positioning type plasma arc welding equipment comprises a machining table, an arc welding gun body, a vertical rod fixedly connected to the top of the machining table, an elevating rail fixedly connected to the end of the vertical rod, an elevating sliding block slidingly connected to the inside of the elevating rail, and a fixed machine ring fixedly connected to one side of the elevating sliding block.The valve piece positioning type plasma arc welding equipment has the advantages that in the process of inside supporting positioning, a sealing pressure seat extrudes a sealing air bag, so that the sealing air bag is in close contact with the open end of a valve piece, the sealing air bag cooperates with the sealing pressure seat and a telescopic sleeve column to realize the sealing of the open end of the valve piece, back protection gas is introduced into the valve piece through the penetrating air holes, and thus, in the case of rapidly realizing the positioning of the valve piece, the sealing treatment is realized, so that the back of the welding point of the valve piece cannot be oxidized and the molten pool is stable.

Description

Technical Field

[0001] This invention relates to the field of plasma arc welding machine technology, and in particular to a valve component positioning type plasma arc welding equipment. Background Technology

[0002] Plasma arc welding is a fusion welding method that uses a high-energy-density plasma arc beam as a welding heat source. In the processing of valve parts, some structural connections are made using plasma arc welding equipment.

[0003] In existing plasma arc welding equipment, shielding gas is introduced during use to improve the stability of the molten pool and protect the back side of the weld. However, the valve connection ports are all connected to the external environment, which causes the shielding gas to quickly dissipate into the external environment, greatly reducing the back side protection effect and reducing the use value of the plasma arc welding equipment. Summary of the Invention

[0004] This invention discloses a valve component positioning plasma arc welding device, which aims to solve the technical problem that in the process of using existing plasma arc welding equipment, in order to improve the stability of the molten pool and protect the back side of the weld, a protective gas is introduced. However, since the valve component connection ports are all connected to the external environment, the introduced protective gas will quickly dissipate into the external environment, which will greatly reduce the back side protection effect.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A valve component positioning type plasma arc welding equipment, comprising:

[0007] Processing table;

[0008] The arc welding gun body has a vertical pole fixedly connected to the top of the processing table, and a lifting rail fixedly connected to the end of the vertical pole. A lifting slider is slidably connected inside the lifting rail, and a fixing ring is fixedly connected to one side of the lifting slider. The arc welding gun body is fixedly connected to the inner ring surface of the fixing ring.

[0009] A transparent fixed cover is set on the top of the processing table, and the processing table has an annular groove at the inner ring of the transparent fixed cover;

[0010] A transparent sliding cover has a sliding ring fixedly connected to its bottom. The sliding ring is slidably connected inside an annular groove, and the transparent sliding cover fits snugly against the transparent fixed cover.

[0011] Two adjusting plates, each with two symmetrically distributed adjusting sliders fixedly connected below them. The processing table is located below the adjusting sliders and has adjusting grooves. The adjusting sliders are slidably connected to the inside of the corresponding adjusting grooves.

[0012] The positioning and sealing mechanism is arranged on the adjusting plate and is used for positioning the valve member and sealing the port.

[0013] The butt joint sealing mechanism is arranged between the arc welding gun body and the transparent cover and is used for sealing during the welding process.

[0014] In a preferred scheme, the positioning and sealing mechanism comprises:

[0015] The telescopic sleeve column is connected to the mounting hole of the adjusting plate through a bearing, and a through air hole is formed in the telescopic sleeve column.

[0016] The end frame is fixedly connected to the outer side wall of the telescopic sleeve column away from the adjusting plate, and a deflection groove is annularly formed in the end frame, and each deflection groove is connected with a positioning plate through a bearing.

[0017] The outer ring is arranged on the outer side wall of the telescopic sleeve column close to the adjusting plate, and two hydraulic cylinders II are fixedly connected to one side of the outer ring, and the output ends of the two hydraulic cylinders II are fixedly connected to the outer side wall of the telescopic sleeve column.

[0018] In a preferred scheme, the positioning and sealing mechanism further comprises:

[0019] The sealing air bag is fixedly connected to the fixing groove formed in each positioning plate.

[0020] The two hydraulic cylinders I are symmetrically distributed on the side of the outer ring facing the sealing air bag.

[0021] The sealing pressure seat is arranged at the output end of the two hydraulic cylinders I and is in contact with the inner ring surface of the sealing air bag, the cross section of the sealing pressure seat is a right trapezoid, the side of the sealing pressure seat facing the end frame is annularly distributed with butt joint rods, and the ends of the plurality of butt joint rods are fixedly connected with the same positioning ring rod.

[0022] In a preferred scheme, the storage tank II is arranged on the top of the adjusting plate close to the machining table, the gas pump is fixedly connected to the top of the machining table close to the storage tank II, the gas inlet end of the gas pump is connected to the inside of the storage tank II through a pipeline, the gas outlet end of the gas pump is fixedly connected with the gas guide pipe II, and one end of the gas guide pipe II is connected to the through air hole formed in the telescopic sleeve column through a bearing.

[0023] In a preferred scheme, the mounting plate is fixedly connected to the top of the machining table at the side of the two adjusting plates facing each other, the adjusting cylinder is fixedly connected to the side of the mounting plate facing the adjacent adjusting plate, and the output end of the adjusting cylinder is fixedly connected to the side of the adjusting plate.

[0024] In an optimal solution, one side of the adjusting plate is fixedly connected with a motor frame, one side of the motor frame is fixedly connected with a forward-reverse motor, the output shaft of the forward-reverse motor is fixedly connected with a rotating shaft through a shaft coupling, the outer side wall of the rotating shaft is fixedly connected with a driving gear, and the outer side wall of one of the telescopic sleeve columns is fixedly connected with a mating gear.

[0025] In an optimal solution, the docking sealing mechanism comprises:

[0026] A hollow operating ring frame is fixedly connected with a connecting rod, the end of the connecting rod is fixedly connected to the top of the mounting ring, and the bottom of the hollow operating ring frame is annularly provided with a gas extraction hole.

[0027] A mounting ring frame is fixedly connected to the top of the transparent cover below the arc welding gun body.

[0028] A telescopic sealing sleeve is arranged at the bottom of the mounting ring frame.

[0029] In an optimal solution, the docking sealing mechanism further comprises:

[0030] A hanger is fixedly connected to the inner wall of the top of the transparent cover.

[0031] A plurality of connecting spring rods are arranged at the top of the hanger below.

[0032] A docking compression ring is fixedly connected to the top of the plurality of connecting spring rods and is fixedly connected to the bottom of the telescopic sealing sleeve.

[0033] A sealing ring is arranged on the inner ring surface of the hollow operating ring frame and is in contact with the outer side wall of the arc welding gun body.

[0034] In an optimal solution, the bottom of the lifting rail is fixedly connected with a lifting cylinder, and the output end of the lifting cylinder facing upward is fixedly connected to the bottom of the lifting slider.

[0035] In an optimal solution, the top of the transparent cover is fixedly connected with a vacuum pump, the vacuum extraction end of the vacuum pump is connected to the inside of the hollow operating ring frame through a pipeline, the top of the processing table is fixedly connected with a storage tank one, the storage tank one is provided with an air outlet, the inside of the air outlet is fixedly connected with an air outlet pipe, the outer side wall of the air outlet pipe is connected with an electromagnetic valve through a flange, the inside of the air outlet pipe is fixedly connected with a gas guide pipe one, and one end of the gas guide pipe one is inserted into the inside of the hollow operating ring frame.

[0036] As can be seen from the above, the valve component positioning plasma arc welding equipment provided by the present invention has the following characteristics: when positioning a valve component, the two open ends of the valve component are placed between two telescopic sleeves. The second hydraulic cylinder is adjusted to drive the telescopic sleeves to gradually penetrate into the open ends of the valve component. During this penetration process, the first hydraulic cylinder is adjusted to drive the positioning ring rod to push each positioning plate, so that the positioning plate is in close contact with the inside of the open end of the valve component, thereby achieving internal support positioning. During the internal support positioning process, the sealing pressure seat squeezes the sealing airbag, so that the sealing airbag is in close contact with the open end of the valve component. The sealing airbag, the sealing pressure seat and the telescopic sleeves cooperate to achieve the sealing of the open end of the valve component. The back protective gas is introduced into the inside of the valve component through the through vent hole, thereby achieving sealing treatment while quickly positioning the valve component, thus ensuring that the back of the valve component welding point will not oxidize and the molten pool will not be unstable. Attached Figure Description

[0037] Figure 1 This is a schematic diagram of the overall structure of a valve component positioning plasma arc welding equipment proposed in this invention.

[0038] Figure 2 for Figure 1 Cross-sectional view of the combined structure of the central transparent fixed cover and the transparent sliding cover.

[0039] Figure 3 This is a schematic diagram of the combined structure of a positioning and sealing mechanism, an adjusting plate, and a storage tank in a valve positioning plasma arc welding equipment proposed in this invention.

[0040] Figure 4 for Figure 3 A schematic diagram of the overall planar structure.

[0041] Figure 5 This is a schematic diagram of the positioning and sealing mechanism, the combined structure of the mating rotating teeth and the active rotating teeth of a valve positioning plasma arc welding equipment proposed in this invention.

[0042] Figure 6 for Figure 5 A schematic diagram of the overall planar structure.

[0043] Figure 7 This is a schematic diagram of the combined structure of a transparent fixed cover, an arc welding torch body, and a butt sealing mechanism for a valve positioning plasma arc welding equipment proposed in this invention.

[0044] Figure 8 This is a schematic diagram of the combined structure of the arc welding gun body and the butt sealing mechanism of a valve component positioning plasma arc welding equipment proposed in this invention.

[0045] Figure 9 This is a schematic diagram of the docking sealing mechanism of a valve component positioning plasma arc welding equipment proposed in this invention.

[0046] Figure 10 For Figure 9 The combination structure of the telescopic sealing sleeve, the hollow operating ring frame and the butt joint compression ring is shown in the sectional view.

[0047] In the figure: 1, processing table; 2, butt joint sealing mechanism; 201, hollow operating ring frame; 202, telescopic sealing sleeve; 203, mounting ring frame; 204, sealing ring; 205, connecting spring rod; 206, hanger; 207, exhaust hole; 208, butt joint compression ring; 3, lifting cylinder; 4, arc welding gun body; 5, connecting rod; 6, lifting rail; 7, vertical rod; 8, air guide pipe I; 9, electromagnetic valve; 10, storage tank I; 11, transparent cover; 12, sliding ring; 13, transparent sliding cover; 14, annular sliding groove; 15, adjusting sliding groove; 16, mounting plate; 17, fixed machine ring; 18, adjusting plate; 19, adjusting sliding block; 20, adjusting cylinder; 21, positioning sealing mechanism; 2101, telescopic sleeve column; 2102, sealing air bag; 2103, end frame; 2104, sealing pressure seat; 2105, positioning ring rod; 2106, positioning plate; 2107, through air hole; 2108, deflection groove; 2109, butt joint rod; 2110, external ring; 2111, hydraulic cylinder I; 2112, hydraulic cylinder II; 22, air guide pipe II; 23, storage tank II; 24, air pump; 25, motor frame; 26, driving gear; 27, matched gear; 28, reversible motor; 29, rotating shaft rod; 30, lifting sliding block; 31, vacuum pump. DETAILED DESCRIPTION

[0048] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all.

[0049] The valve piece positioning type plasma arc welding equipment disclosed by the present application is mainly applied to the existing plasma arc welding equipment in use. In order to improve the stability of the molten pool and protect the back of the weld, protective gas is introduced. However, the valve piece connecting port is connected with the external environment, which will cause the introduced protective gas to quickly escape to the external environment, greatly reducing the back protection effect.

[0050] Referring to Figures 1-10 A valve piece positioning type plasma arc welding equipment, comprising:

[0051] The processing table 1;

[0052] The arc welding gun body 4 is fixedly connected to the top of the machining table 1, the end of the vertical rod 7 is fixedly connected with the lifting rail 6, the lifting rail 6 is slidably connected with the lifting sliding block 30, one side of the lifting sliding block 30 is fixedly connected with the fixed machine ring 17, and the arc welding gun body 4 is fixedly connected to the inner ring surface of the fixed machine ring 17.

[0053] The transparent fixed cover 11 is arranged on the top of the machining table 1, and the machining table 1 is provided with a ring-shaped sliding groove 14 at the inner ring of the transparent fixed cover 11.

[0054] The transparent sliding cover 13 is fixedly connected with the sliding ring 12 at the bottom, the sliding ring 12 is slidably connected in the inner part of the ring-shaped sliding groove 14, and the transparent sliding cover 13 is attached to the transparent fixed cover 11.

[0055] The two adjusting plates 18 are fixedly connected with two symmetrically distributed adjusting sliding blocks 19 below, the machining table 1 is provided with adjusting sliding grooves 15 below the adjusting sliding blocks 19, and the adjusting sliding blocks 19 are slidably connected in the inner part of the corresponding adjusting sliding grooves 15.

[0056] The positioning and sealing mechanism 21 is arranged on the adjusting plate 18, and is used for realizing the positioning and port sealing of the valve piece.

[0057] The butt sealing mechanism 2 is arranged between the arc welding gun body 4 and the transparent fixed cover 11, and is used for realizing sealing in the welding process.

[0058] In a specific application scenario, when the valve piece is positioned, the two open ends of the valve piece are placed between the two telescopic sleeve columns 2101, the telescopic sleeve column 2101 is gradually deepened into the inner part of the open end of the valve piece under the driving of the adjusting hydraulic cylinder two 2112, in the deepening process, the positioning ring rod 2105 drives the positioning plates 2106 to be pushed, so that the positioning plates 2106 are in close contact with the inner part of the open end of the valve piece, thereby realizing the inside supporting positioning, in the inside supporting positioning process, the sealing air bag 2102 is extruded by the sealing pressure seat 2104, so that the sealing air bag 2102 is in close contact with the open end of the valve piece, and the sealing air bag 2102 cooperates with the sealing pressure seat 2104 and the telescopic sleeve column 2101 to realize the sealing of the open end of the valve piece, the back protection gas is introduced into the inner part of the valve piece through the penetrating air hole 2107, so that the sealing treatment is realized in the case of quickly realizing the positioning of the valve piece, thereby ensuring that the back of the valve piece welding point will not be oxidized and the molten pool will be unstable, and improving the back protection effect of the welding seam.

[0059] Specifically, the greater the diameter of the open end of the valve piece, the greater the extrusion of the sealing air bag 2102 caused by the sealing pressure seat 2104, and the better the sealing effect between the sealing air bag 2102 and the inner part of the open end of the valve piece, thereby avoiding the occurrence of the case that the sealing effect is weakened due to the large diameter of the open end of the valve piece, and improving the sealing effect of the open end of the valve piece.

[0060] Referring to Figures 1-6 In a preferred embodiment, the positioning and sealing mechanism 21 comprises:

[0061] a telescopic sleeve column 2101 connected to the mounting hole of the adjusting plate 18 through a bearing, and a through air hole 2107 is formed in the telescopic sleeve column 2101;

[0062] an end frame 2103 fixedly connected to the outer side wall of the telescopic sleeve column 2101 away from the adjusting plate 18, and a deflection groove 2108 is annularly formed in the end frame 2103, and a positioning plate 2106 is connected to each deflection groove 2108 through a bearing;

[0063] an external ring 2110 arranged on the outer side wall of the telescopic sleeve column 2101 close to the adjusting plate 18, and two hydraulic cylinders two 2112 are fixedly connected to one side of the external ring 2110, and the output ends of the two hydraulic cylinders two 2112 are fixedly connected to the outer side wall of the telescopic sleeve column 2101.

[0064] Referring to Figure 5 and Figure 6 In a preferred embodiment, the positioning and sealing mechanism 21 further comprises:

[0065] a sealing air bag 2102 fixedly connected to the fixing groove formed in each positioning plate 2106;

[0066] two hydraulic cylinders one 2111 symmetrically distributed on the side of the external ring 2110 facing the sealing air bag 2102;

[0067] a sealing pressure seat 2104 arranged at the output end of the two hydraulic cylinders one 2111, and the inner annular surface of the sealing pressure seat 2104 is in contact with the sealing air bag 2102, the cross section of the sealing pressure seat 2104 is a right trapezoid, the side of the sealing pressure seat 2104 facing the end frame 2103 is annularly distributed with butt joint rods 2109, and the ends of the plurality of butt joint rods 2109 are fixedly connected with the same positioning ring rod 2105.

[0068] Referring to Figure 3 and Figure 4 In a preferred embodiment, the storage tank two 23 is placed on the top of the processing table 1 close to the adjusting plate 18, and the air pump 24 is fixedly connected to the top of the processing table 1 close to the storage tank two 23, the air inlet end of the air pump 24 is connected to the inside of the storage tank two 23 through a pipeline, the air outlet end of the air pump 24 is fixedly connected with the air guide pipe two 22, and one end of the air guide pipe two 22 is connected to the through air hole 2107 formed in the telescopic sleeve column 2101 through a bearing.

[0069] Referring to Figure 2 and Figure 3In a preferred embodiment, the machining table 1 is fixedly connected with the mounting plate 16 at the top of the two adjusting plates 18 on the side facing each other, and the mounting plate 16 is fixedly connected with the adjusting cylinder 20 on the side facing the adjacent adjusting plate 18, and the output end of the adjusting cylinder 20 is fixedly connected to one side of the adjusting plate 18.

[0070] Referring to Figure 5 and Figure 6 In a preferred embodiment, one side of one of the adjusting plates 18 is fixedly connected with the motor bracket 25, and one side of the motor bracket 25 is fixedly connected with the forward and reverse motor 28, the output shaft of the forward and reverse motor 28 is fixedly connected with the rotating shaft rod 29 through the shaft coupling, and the outer side wall of the rotating shaft rod 29 is fixedly connected with the driving gear 26. The outer side wall of one of the telescopic sleeve columns 2101 is fixedly connected with the matching gear 27, and the driving gear 26 and the matching gear 27 are engaged.

[0071] It should be noted that during the welding of the valve piece, if the position of the valve piece needs to be adjusted, the adjusting cylinder 20 is used to drive the adjusting plate 18 to move, and the valve piece welding point is moved to below the arc welding gun body 4. If the valve piece needs to be rotated, the forward and reverse motor 28 is started, the forward and reverse motor 28 drives the driving gear 26 to rotate, the driving gear 26 drives the telescopic sleeve column 2101 on the matching gear 27 to rotate, thereby realizing the rotation of the valve piece, and improving the convenience of adjusting the valve piece.

[0072] Referring to Figures 7-10 In a preferred embodiment, the butt sealing mechanism 2 comprises:

[0073] The hollow operating ring frame 201 is fixedly connected with the connecting rod 5, the end of the connecting rod 5 is fixedly connected to the top of the mounting ring, and the bottom of the hollow operating ring frame 201 is annularly provided with the exhaust hole 207;

[0074] The mounting ring bracket 203 is fixedly connected to the top of the transparent cover 11 below the arc welding gun body 4.

[0075] The telescopic sealing sleeve 202 is arranged at the bottom of the mounting ring bracket 203.

[0076] Specifically, in the process of lowering the arc welding gun body 4 driven by the lifting cylinder 3, the hollow operating ring frame 201 contacts the butt joint compression ring 208, then the hollow operating ring frame 201 drives the butt joint compression ring 208 to descend, the telescopic sealing sleeve 202 is passively stretched, then the arc welding gun body 4 enters the inside of the transparent fixed cover 11 and the transparent sliding cover 13, the telescopic sealing sleeve 202, the butt joint compression ring 208 and the sealing ring 204 cooperate to realize sealing, the vacuum pump 31 is started, the vacuum pump 31 evacuates the gas inside the transparent fixed cover 11 and the transparent sliding cover 13 through the exhaust hole 207 on the hollow operating ring frame 201, avoids the influence of the gas on the molten pool, after the evacuation is completed, the electromagnetic valve 9 is opened, under the action of negative pressure, the shielding gas in the storage tank one 10 flows to the inside of the hollow operating sliding frame through the gas guide pipe one 8, escapes to the periphery of the welding point through the exhaust hole 207, protects the welding point from being affected, and improves the welding effect.

[0077] It should be noted that after the welding of the single valve piece is completed, the arc welding gun body 4 is removed from the transparent fixed cover 11, then the connecting spring rod 205 in the compressed state drives the butt joint compression ring 208 to reset.

[0078] Referring to Figure 9 and Figure 10 In a preferred embodiment, the butt joint sealing mechanism 2 further comprises:

[0079] The hanger 206 is fixedly connected to the top inner wall of the transparent fixed cover 11.

[0080] The plurality of connecting spring rods 205 are arranged at the top of the hanger 206 located below.

[0081] The butt joint compression ring 208 is fixedly connected to the top of the plurality of connecting spring rods 205, and the butt joint compression ring 208 is fixedly connected to the bottom of the telescopic sealing sleeve 202.

[0082] The sealing ring 204 is arranged on the inner ring surface of the hollow operating ring frame 201, and is attached to the outer side wall of the arc welding gun body 4.

[0083] Referring to Figure 1 , Figure 2 and Figure 7 In a preferred embodiment, the bottom of the lifting rail 6 is fixedly connected with the lifting cylinder 3, and the output end of the lifting cylinder 3 facing upward is fixedly connected to the bottom of the lifting sliding block 30.

[0084] Referring to Figure 7 and Figure 8In a preferred implementation, the top of the transparent cover 11 is fixedly connected with a vacuum pump 31, and the vacuum end of the vacuum pump 31 is connected with the inside of the hollow operating ring frame 201 through a pipeline. The top of the processing table 1 is fixedly connected with a storage tank 10. The storage tank 10 is provided with a gas outlet. The inside of the gas outlet is fixedly connected with a gas outlet pipe. The outer side wall of the gas outlet pipe is connected with an electromagnetic valve 9 through a flange. The inside of the gas outlet pipe is fixedly connected with a gas guide pipe 8. One end of the gas guide pipe 8 is inserted into the inside of the hollow operating ring frame 201.

[0085] Working principle: when in use, the two open ends of the valve piece are placed between the two telescopic sleeve columns 2101, the telescopic sleeve column 2101 is gradually deepened into the inside of the open end of the valve piece by adjusting the hydraulic cylinder two 2112, in the process of deepening, the positioning ring rod 2105 pushes the positioning plate 2106 to make the positioning plate 2106 tightly contact with the inside of the open end of the valve piece, so as to realize the inside supporting positioning, in the process of inside supporting positioning, the sealing pressure seat 2104 extrudes the sealing air bag 2102, so that the sealing air bag 2102 tightly contacts with the open end of the valve piece, the sealing air bag 2102 cooperates with the sealing pressure seat 2104 and the telescopic sleeve column 2101 to realize the sealing of the open end of the valve piece, the back protection gas is introduced into the inside of the valve piece through the penetrating air hole 2107, after the positioning of the valve piece is completed, the transparent sliding cover 13 is rotated, so that the transparent sliding cover 13 cooperates with the transparent fixed cover 11 to seal the valve piece inside, then the arc welding gun body 4 is moved to the position above the welding point of the valve piece by adjusting the lifting air cylinder 3, in the process of the arc welding gun body 4 being lowered by the lifting air cylinder 3, the hollow operation ring frame 201 drives the butt joint pressure ring 208 to descend after contacting with the butt joint pressure ring 208, the telescopic sealing sleeve 202 is passively stretched, then the arc welding gun body 4 enters the inside of the transparent fixed cover 11 and the transparent sliding cover 13, the telescopic sealing sleeve 202, the butt joint pressure ring 208 and the sealing ring 204 cooperate to realize the sealing, the vacuum pump 31 is started, the vacuum pump 31 removes the gas in the inside of the transparent fixed cover 11 and the transparent sliding cover 13 through the exhaust air hole 207 on the hollow operation ring frame 201, so as to avoid the influence of the gas on the molten pool, after the air exhaust is completed, the electromagnetic valve 9 is opened, under the action of negative pressure, the protective gas in the storage tank one 10 flows to the inside of the hollow operation sliding frame through the air guide pipe one 8, and then escapes to the periphery of the welding point through the exhaust air hole 207, the arc welding gun body 4 starts to work, after the welding of a single welding point is completed, the valve piece welding point is moved to the lower side of the arc welding gun body 4 by moving the adjusting plate 18 driven by the adjusting air cylinder 20, the positive and negative rotation motor 28 is started, the positive and negative rotation motor 28 drives the driving gear teeth 26 to rotate, the driving gear teeth 26 drive the telescopic sleeve column 2101 on the matched gear teeth 27 to rotate, so as to realize the rotation of the valve piece, the welding point is rotated to the uppermost position, after the welding of the valve piece is completed, the arc welding gun body 4 is reset by the lifting air cylinder 3, the transparent sliding cover 13 is rotated again, then the welded valve piece is taken out, and the single operation is completed.

[0086] The above is only the preferred specific embodiment of the present application, but the protection scope of the present application is not limited to this, any person skilled in the art can make equivalent replacement or change according to the technical scheme and the inventive concept of the present application within the technical range disclosed by the present application, which should be covered in the protection scope of the present application.

Claims

1. A valve component positioning type plasma arc welding equipment, characterized in that, include: Processing table (1); The arc welding gun body (4) has a vertical rod (7) fixedly connected to the top of the processing table (1), and a lifting rail (6) fixedly connected to the end of the vertical rod (7). A lifting slider (30) is slidably connected inside the lifting rail (6). A fixing ring (17) is fixedly connected to one side of the lifting slider (30). The arc welding gun body (4) is fixedly connected to the inner ring surface of the fixing ring (17). A transparent fixed cover (11) is set on the top of the processing table (1), and the processing table (1) has an annular groove (14) at the inner ring of the transparent fixed cover (11). A transparent sliding cover (13) has a sliding ring (12) fixedly connected to its bottom. The sliding ring (12) is slidably connected to the inside of the annular sliding groove (14). The transparent sliding cover (13) is in close contact with the transparent fixed cover (11). Two adjusting plates (18) are fixedly connected to two symmetrically distributed adjusting sliders (19) below each. The processing table (1) is located below the adjusting sliders (19) and has an adjusting groove (15). The adjusting sliders (19) are slidably connected to the inside of the corresponding adjusting grooves (15). A positioning and sealing mechanism (21) is provided on the adjusting plate (18). The positioning and sealing mechanism (21) is used to realize the positioning of the valve parts and the sealing of the port. A sealing mechanism (2) is provided between the arc welding gun body (4) and the transparent fixed cover (11). The sealing mechanism (2) is used to achieve sealing during the welding process. The docking sealing mechanism (2) includes: A hollow operating ring frame (201) is fixedly connected to a connecting rod (5), the end of which is fixedly connected to the top of a fixed machine ring (17). The bottom of the hollow operating ring frame (201) is provided with an air extraction hole (207). Mounting ring (203) is fixedly connected to the top of the transparent fixed cover (11) located below the arc welding gun body (4); A telescopic sealing sleeve (202) is provided at the bottom of the mounting ring frame (203); The docking sealing mechanism (2) further includes: The hanger (206) is fixedly connected to the top inner wall of the transparent cover (11); Multiple connecting spring rods (205) are all located at the top of the hanger (206) below; The mating pressure ring (208) is fixedly connected to the top of multiple connecting spring rods (205), and the mating pressure ring (208) is fixedly connected to the bottom of the telescopic sealing sleeve (202); A sealing ring (204) is set on the inner ring surface of the hollow operating ring frame (201) and is in contact with the outer wall of the arc welding gun body (4).

2. The valve component positioning type plasma arc welding equipment according to claim 1, characterized in that, The positioning and sealing mechanism (21) includes: The telescopic sleeve (2101) is connected to the mounting hole on the adjusting plate (18) by a bearing, and the telescopic sleeve (2101) has a through vent hole (2107). The end frame (2103) is fixedly connected to the outer wall of the telescopic sleeve column (2101) away from the adjustment plate (18), and a deflection groove (2108) is provided on it in a ring. Each deflection groove (2108) is connected to a positioning plate (2106) by a bearing. An outer ring (2110) is provided on the outer side wall of the telescopic sleeve (2101) near the adjusting plate (18). Two hydraulic cylinders (2112) are fixedly connected to one side of the outer ring (2110), and the output ends of the two hydraulic cylinders (2112) are fixedly connected to the outer side wall of the telescopic sleeve (2101).

3. The valve component positioning type plasma arc welding equipment according to claim 2, characterized in that, The positioning and sealing mechanism (21) further includes: The sealing airbag (2102) is fixedly connected to the fixing grooves opened on each positioning plate (2106); Two hydraulic cylinders (2111) are symmetrically distributed on the side of the outer ring (2110) facing the sealing airbag (2102); A sealing pressure seat (2104) is located at the output end of two hydraulic cylinders (2111) and is in contact with the inner ring surface of the sealing airbag (2102). The cross section of the sealing pressure seat (2104) is a right trapezoid. On the side of the sealing pressure seat (2104) facing the end frame (2103), there are connecting rods (2109) distributed in a ring. The ends of multiple connecting rods (2109) are fixedly connected to the same positioning ring rod (2105).

4. The valve component positioning type plasma arc welding equipment according to claim 3, characterized in that, The processing table (1) has a storage tank (23) placed on top of the adjustment plate (18), and an air pump (24) is fixedly connected to the top of the processing table (1) near the storage tank (23). The air inlet of the air pump (24) is connected to the inside of the storage tank (23) through a pipe. The air outlet of the air pump (24) is fixedly connected to a guide pipe (22). One end of the guide pipe (22) is connected to a through vent (2107) opened on the telescopic sleeve (2101) through a bearing.

5. A valve component positioning type plasma arc welding equipment according to claim 1, characterized in that, The processing table (1) is fixedly connected to the top of the two adjustment plates (18) on the opposite side, and the side of the installation plate (16) facing the adjacent adjustment plate (18) is fixedly connected to the adjustment cylinder (20), and the output end of the adjustment cylinder (20) is fixedly connected to one side of the adjustment plate (18).

6. A valve component positioning type plasma arc welding equipment according to claim 4, characterized in that, One of the adjustment plates (18) is fixedly connected to a motor frame (25), and a reversible motor (28) is fixedly connected to one side of the motor frame (25). The output shaft of the reversible motor (28) is fixedly connected to a rotating shaft (29) via a coupling. An active rotating tooth (26) is fixedly connected to the outer wall of the rotating shaft (29). A mating rotating tooth (27) is fixedly connected to the outer wall of one of the telescopic sleeves (2101). The active rotating tooth (26) and the mating rotating tooth (27) mesh with each other.

7. A valve component positioning type plasma arc welding equipment according to claim 1, characterized in that, The bottom of the lifting rail (6) is fixedly connected to a lifting cylinder (3), and the upward-facing output end of the lifting cylinder (3) is fixedly connected to the bottom of the lifting slider (30).

8. A valve component positioning type plasma arc welding equipment according to claim 7, characterized in that, A vacuum pump (31) is fixedly connected to the top of the transparent fixed cover (11), and the vacuum pump (31) is connected to the inside of the hollow operating ring frame (201) through a pipe. A storage tank (10) is fixedly connected to the top of the processing table (1). An air outlet is opened on the storage tank (10). An air outlet pipe is fixedly connected inside the air outlet. A solenoid valve (9) is connected to the outer wall of the air outlet pipe through a flange. An air guide pipe (8) is fixedly connected inside the air outlet pipe. One end of the air guide pipe (8) is inserted into the inside of the hollow operating ring frame (201).

Images