An ultrathin metal ring welding auxiliary device and method

Abstract

The application discloses a kind of ultra-thin metal ring welding auxiliary device and method, to solve the internal porosity of weld caused by backside air protection when ultra-thin metal cooling ring is welded.The application includes main body gas guide pipe and plug, chuck and pre-tightening piece are installed on the main body gas guide pipe and move, pre-tightening piece is on the chuck, plug is closely matched with ring hole on ultra-thin metal ring, main body gas guide pipe is communicated between chuck and plug, and welding ring is pressed between chuck and ring hole end part.The ultra-thin metal ring welding auxiliary device of the patent application can better play the role of air protection during welding, can ensure the penetration of single-sided welding double-sided forming and the forming quality inside weld, and reduce weld porosity.

Description

TECHNICAL FIELD

[0001] The present application relates to metal ring welding technology, more particularly, it relates to a kind of ultra-thin metal ring welding auxiliary device and method. BACKGROUND

[0002] With the rapid development of semiconductor industry, the requirements of semiconductor equipment processing and welding are also increasing. In the semiconductor equipment, the ultra-thin metal cooling ring is an important structure, which is mainly manufactured by mechanical processing after welding of ultra-thin stainless steel or aluminum alloy. The welding quality directly affects the cooling effect, processing size and service life, stability. In the process of welding ultra-thin metal cooling ring, the quality of backside gas protection of weld directly affects the forming and welding quality of weld, including porosity, penetration, etc. Therefore, higher requirements are put forward for the backside gas protection of weld during welding of ultra-thin metal cooling ring. Especially in the butt joint of pipe and the fillet weld of side joint, the penetration is required, and the single-sided welding double-sided forming is required, so the backside gas protection of weld is particularly important. However, the backside gas protection of weld is poor during welding of ultra-thin metal cooling ring, which causes porosity in the weld. These porosities will directly cause the polishing of weld, which is not allowed to exist in the semiconductor equipment parts, and will cause the product to be scrapped. SUMMARY

[0003] In order to overcome the above shortcomings, the present application provides an ultra-thin metal ring welding auxiliary device and method, which can better play the role of gas protection during welding, can ensure the penetration of single-sided welding double-sided forming and the forming quality inside the weld, and reduce the porosity of weld.

[0004] In order to solve the above technical problems, the present application adopts the following technical scheme: an ultra-thin metal ring welding auxiliary device, comprising a main body gas guide pipe and a plug, a chuck and a pre-tightening piece movably arranged on the main body gas guide pipe, the pre-tightening piece is on the chuck, the plug is tightly matched with the ring hole on the ultra-thin metal ring, the main body gas guide pipe is communicated between the chuck and the plug, and the chuck and the ring hole end are pressed tightly.

[0005] In the process of welding the ultra-thin metal ring and the welding ring, the ultra-thin metal ring welding auxiliary device is used for assistance, which ensures the welding accuracy, and the inflation protection effect is good during the welding process, the gas consumption is small, and the cost is reduced. During the welding operation, the ultra-thin metal ring is first clamped and positioned; then the welding ring and the plug are sleeved together; then the main gas guide pipe is moved, so that the plug is tightly inserted into the ring hole on the ultra-thin metal ring, one end of the welding ring is in contact with the end of the ring hole, and the other end of the welding ring is in contact with the chuck, at this time, the plug and the chuck form a protection gas chamber, which has good sealing performance; then the protection gas is introduced into the protection gas chamber through the main gas guide pipe, so that the inflation protection of the back of the weld is realized; finally, the weld between the welding ring and the end of the ring hole is welded, and the protection gas is always introduced during the welding process.

[0006] The ultra-thin metal ring welding auxiliary device of the patent application can better play the inflation protection role during the welding process, can ensure the penetration of single-sided welding and double-sided forming, and can reduce the porosity of the weld.

[0007] Preferably, the plug side wall is provided with a high-silicon cloth layer.

[0008] The high-silicon cloth is soft and heat-resistant, which ensures that the plug and the ring hole on the ultra-thin metal ring can be tightly inserted and connected, and the sealing performance is guaranteed.

[0009] Preferably, a limiting block is installed on the main gas guide pipe, and the chuck is clamped between the limiting block and the pre-tightening piece.

[0010] The limiting block limits the chuck.

[0011] Preferably, a gas core is arranged on the main gas guide pipe, the gas core is arranged between the plug and the chuck, the gas core has a tubular structure, and a plurality of gas outlets are densely arranged on the side wall of the gas core.

[0012] The protection gas is discharged from the gas outlets on the gas core into the protection gas chamber, the gas outlets face the weld, and the protection gas discharged from the gas outlets can directly hit the weld, so that the welding protection effect is good. The plurality of gas outlets densely arranged on the side wall of the gas core can better realize 360° uniform gas outlet, and the gas pressure balance of each part can be realized, so that local high pressure and gas rolling are avoided.

[0013] Preferably, a connecting column is arranged on the main gas guide pipe, and the connecting column is tightly connected with the plug.

[0014] The connecting column is connected with the plug, and the connection is convenient and reliable.

[0015] Preferably, the pre-tightening piece is a pre-tightening spring, a spring seat is connected on the main gas guide pipe, and the pre-tightening piece is abutted between the spring seat and the chuck.

[0016] The pre-tightening spring is used as the pre-tightening piece, and the pre-tightening force provided is stable and reliable. The spring seat facilitates the installation of the pre-tightening spring.

[0017] As preferred, the chuck is provided with a boss matched with the ring on the end face of the plug.

[0018] Before welding, the ring is inserted and positioned with the boss, ensuring the accuracy of the welding position. It prevents the ring from shaking during the welding process.

[0019] As preferred, the chuck is provided with a plurality of small exhaust holes.

[0020] During the welding process, the main gas guide pipe continuously introduces protective gas into the protective gas chamber, and the protective gas chamber is filled with protective gas. After the gas pressure rises, the gas flow is discharged outward from the exhaust hole, avoiding excessive pressure in the protective gas chamber.

[0021] As preferred, the main gas guide pipe is tightly connected to the sliding plate, the sliding plate is connected to the clamping seat, the clamping seat is provided with a clamping groove matched with the ultra-thin metal ring, the clamping seat is provided with a guide column, the sliding plate is slidingly connected to the guide column, the guide column is connected to the abutting spring, and the abutting spring abuts against the sliding plate.

[0022] During the welding process, first pull the sliding plate, and then precisely position the ultra-thin metal ring matched with the clamping groove on the clamping seat. At this time, the relative position of the plug and the ultra-thin metal ring is accurate and reliable. Insert the ring into the plug, then loosen the sliding plate, and under the action of the abutting spring, the plug moves towards the ultra-thin metal ring. The plug is tightly inserted into the ring hole of the ultra-thin metal ring, one end of the ring is in contact with the end of the ring hole, and the other end of the ring is in contact with the chuck. Through this structure, the welding operation is assisted, the ring and the ultra-thin metal ring are welded accurately and reliably, and the work efficiency is improved.

[0023] A method for welding an ultra-thin metal ring, using an ultra-thin metal ring welding auxiliary device for auxiliary welding, comprising the following steps: S1, clamping and positioning the ultra-thin metal ring; S2, assembling the ring and the plug together; S3, moving the main gas guide pipe to tightly insert the plug into the ring hole of the ultra-thin metal ring, one end of the ring is in contact with the end of the ring hole, and the other end of the ring is in contact with the chuck. At this time, the plug and the chuck form a protective gas chamber; S4, introducing protective gas into the protective gas chamber through the main gas guide pipe; S5, welding the weld between the ring and the end of the ring hole.

[0024] During the welding process, the plug is tightly inserted into the ring hole of the ultra-thin metal ring, one end of the ring is in contact with the end of the ring hole, and the other end of the ring is in contact with the chuck. The reliable positioning of the ring is achieved, and the accuracy of the relative position of the ring and the ultra-thin metal ring is ensured. During the welding process, protective gas is introduced into the protective gas chamber formed between the plug and the chuck, achieving backside gas protection for the weld. It can ensure the penetration of single-sided welding and double-sided forming, and reduce the porosity of the weld.

[0025] Compared with the prior art, the beneficial effects of the present application are: (1) the ultra-thin metal ring welding auxiliary device can better play the inflation protection role in the welding process, can ensure the penetration of single-sided welding double-sided forming and the internal forming quality of the weld, and reduce the weld pores; (2) the protective gas is introduced into the protective gas chamber formed between the plug and the chuck during the welding process, and the inflation protection of the back of the weld is realized. BRIEF DESCRIPTION OF DRAWINGS

[0026] Figure 1 is a structural schematic diagram of the present application.

[0027] Figure 2 is a schematic diagram of the use state of the present application.

[0028] Figure 3 is a schematic diagram of the use state of the present application.

[0029] Figure 4 is a sectional view of the use state of embodiment 1 of the present application.

[0030] Figure 5 is a sectional view of the use state of embodiment 2 of the present application.

[0031] Figure 6 is a sectional view of the use state of embodiment 3 of the present application.

[0032] Figure 7 is an enlarged view of A of the present application. Figure 6

[0033] In the figure: 1, main gas guide pipe, 2, plug, 3, gas pipe joint, 4, chuck, 5, pre-tightening piece, 6, spring seat, 7, positioning screw, 8, welding ring, 9, ultra-thin metal ring, 10, ring hole, 11, high-silica cloth layer, 12, air core, 13, air outlet hole, 14, connecting column, 15, gas guide pipe body, 16, limit stop, 17, boss, 18, sliding plate, 19, clamping seat, 20, clamping groove, 21, guide column, 22, abutment spring, 23, end cover, 24, ring groove, 25, rotating column, 26, support, 27, overturning motor, 28, driving gear, 29, driven gear ring, 30, partition, 31, piston column, 32, positioning rod, 33, connecting rod, 34, transition hole, 35, return spring, 36, avoidance groove, 37, hinged seat, 38, sliding seat, 39, sliding groove, 40, sliding column, 41, positioning head. DETAILED DESCRIPTION

[0034] The technical solutions of the present application will be further specifically described below in combination with the drawings:

[0035] Embodiment 1: An ultra-thin metal ring welding auxiliary device (see attached Figure 1 to the attached​Figure 4 ), comprising a main body air pipe 1 and a plug 2, the plug 2 is tightly installed at one end of the main body air pipe 1, and the other end of the main body air pipe 1 is connected with a trachea through a trachea joint 3. A chuck 4 and a pre-tightening piece 5 are installed on the main body air pipe 1, the pre-tightening piece 5 is on the chuck 4, the chuck 4 is movably sleeved with the main body air pipe 1 through a sleeve hole arranged on the chuck 4. The pre-tightening piece 5 is a pre-tightening spring, which is movably sleeved on the main body air pipe 1, and a spring seat 6 is connected on the main body air pipe 1, the spring seat 6 can slide along the main body air pipe 1, and the pre-tightening piece 5 abuts between the spring seat 6 and the chuck 4. The spring seat 6 is connected with a positioning screw 7, and the end of the positioning screw 7 abuts on the outer wall of the main body air pipe 1.

[0036] The plug 2 is tightly fitted with the ring hole 10 on the ultra-thin metal ring 9, the main body air pipe 1 is communicated between the chuck 4 and the plug 2, and the chuck 4 and the end of the ring hole 10 are tightly welded with the welding ring 8. The end of the welding ring 8 corresponds to the end of the ring hole 10 on the ultra-thin metal ring 9, and a welding seam is formed therebetween.

[0037] A high-silicon cloth layer 11 is arranged on the side wall of the plug 2. The high-silicon cloth is soft and heat-resistant, which ensures that the plug 2 can be tightly inserted and connected with the ring hole 10 on the ultra-thin metal ring 9, and ensures the sealing performance.

[0038] The main body air pipe 1 is provided with a gas core 12, which is arranged between the plug 2 and the chuck 4. The gas core 12 has a tubular structure, and a plurality of gas outlet holes 13 are densely arranged on the side wall of the gas core 12. The main body air pipe 1 is provided with a connecting column 14, and the connecting column 14 is tightly connected with the plug 2.

[0039] The main body air pipe 1 comprises a main body air pipe body 15, the gas core 12 and the connecting column 14, and the gas core 12 is threadedly connected between the main body air pipe body 15 and the connecting column 14. The gas outlet holes 13 on the gas core 12 are circumferentially arranged, thereby achieving 360° uniform gas outlet and realizing gas pressure balance at each part, without causing local high pressure and gas rolling.

[0040] A limiting block 16 is installed on the main body air pipe 1, and the chuck 4 is clamped between the limiting block 16 and the pre-tightening piece 5. The chuck 4 and the limiting block 16 are both installed on the main body air pipe body 15. The plug 2 is connected with a fastening nut on both sides of the connecting column 14, and the two fastening nuts abut on both sides of the plug 2.

[0041] A boss 17 matched with the welding ring 8 is arranged on the end face of the chuck 4 facing the plug 2. A plurality of small exhaust holes are arranged on the chuck 4.

[0042] The main body air pipe 1 is made of stainless steel, mainly considering that it can be used for a long time and the wear resistance of the thread. The length of the main body air pipe 1 can be determined according to the actual use of the product. Generally, the length is recommended to be 300-1000 mm, the inner hole size is between 4 mm and 10 mm in diameter, and the outer diameter size of the main body is between 12 mm and 22 mm. The spring seat 6 is made of 304 stainless steel, mainly used for compressing the pre-tightening spring, and plays a limiting role. The spring seat 6 is provided with a limiting step, and the pre-tightening spring abuts against the limiting step. The inner hole size of the limiting step is the outer diameter of the main body air pipe 1 plus about 1 mm, which ensures that the spring seat 6 can slide freely on the main body air pipe 1. The pre-tightening spring is mainly beneficial to the elasticity of the spring to compress the chuck 4 and can provide appropriate compression force. The selection of the spring is mainly based on the shape and size of the main body air pipe 1. The inner diameter of the spring is greater than 1-2 mm and not greater than the outer diameter of the limiting step on the spring seat 6. The chuck 4 is made of aluminum alloy material considering the convenience of actual construction because of its large area and heavy quality. The chuck 4 can be composed of multiple chucks 4 and can be used on various specifications of pipe fittings. The small exhaust holes with a diameter of 1.5 mm-3 mm are arranged on the chuck 4 to balance the pressure of the protection chamber. The holes can be arranged at multiple positions around the circumference. The schematic diagram only shows three evenly distributed small holes. The PCD of the small hole arrangement position is less than the inner diameter of the welding ring 8. The limiting step is matched according to the size of the pre-tightening spring, and the depth is between 1.5 mm and 3 mm. The limiting block 16 mainly plays a phase role of the chuck 4. The air core 12 is a hollow structure, and multiple air outlet holes 13 are evenly arranged. The inner thread at one end of the air core 12 is connected with the main body air pipe 1, and the outer thread at the other end is connected with the connecting column 14. The connecting column 14 mainly serves as a connecting piece between the air core 12 and the plug 2. The structure of the plug 2 can be matched according to the inner diameter of the welding ring 8 and be smaller than the target size by 1-2 mm. Then, the high-silicon cloth layer 11 is wound around the circumference of the plug 2 to make the size of the plug 2 just fit the inner diameter of the ring hole 10 on the ultra-thin metal ring 9. The elastic deformation of the high-silicon cloth makes the inner diameter of the ring hole 10 tightly fit with the plug 2 during welding.

[0043] An ultra-thin metal ring welding method, such as Figure 2 、 Figure 3 、 Figure 4As shown, the auxiliary welding is performed by using the ultra-thin metal ring 9 welding auxiliary device, including the following steps: S1, clamping and positioning the ultra-thin metal ring 9; S2, assembling the welding ring 8 and the plug 2 together; S3, moving the main body gas pipe 1 to tightly insert the plug 2 into the ring hole 10 on the ultra-thin metal ring 9, and the one end of the welding ring 8 is in contact with the end of the ring hole 10, and the other end of the welding ring 8 is in contact with the chuck 4, at this time, the plug 2 and the chuck 4 form a protective gas chamber; S4, the protective gas is introduced into the protective gas chamber through the main body gas pipe 1, and the protective gas in this embodiment is argon; S5, the weld between the welding ring 8 and the end of the ring hole 10 is welded, and during the welding, a plurality of fixed points are welded in a circumferential direction, so that the welding ring 8 and the end of the ring hole 10 are first fixed, and then all the welds are welded. After the welding is completed, the main body gas pipe 1 is pulled backward to separate the plug 2 from the welding ring 8.

[0044] During the welding process, the plug 2 is tightly inserted into the ring hole 10 on the ultra-thin metal ring 9, and the one end of the welding ring 8 is in contact with the end of the ring hole 10, and the other end of the welding ring 8 is in contact with the chuck 4, so that the reliable positioning of the welding ring 8 is realized, and the precision of the relative position of the welding ring 8 and the ultra-thin metal ring 9 is ensured. During the welding process, the protective gas is introduced into the protective gas chamber formed between the plug 2 and the chuck 4, so that the back of the weld is protected by gas, which can ensure the penetration of single-sided welding and double-sided forming and the quality of the internal forming of the weld, and reduce the porosity of the weld.

[0045] Embodiment 2: An ultra-thin metal ring welding auxiliary device (see attached Figure 5 ), including a main body gas pipe 1 and a plug 2, the plug 2 is tightly installed at one end of the main body gas pipe 1, and the other end of the main body gas pipe 1 is connected to a gas pipe through a gas pipe joint 3. The chuck 4 and the pre-tightening piece 5 are movably installed on the main body gas pipe 1, the pre-tightening piece 5 is in contact with the chuck 4, the chuck 4 is provided with a sleeve hole, and the chuck 4 is movably assembled with the main body gas pipe 1 through the sleeve hole. The pre-tightening piece 5 is a pre-tightening spring, which is movably assembled on the main body gas pipe 1, and the main body gas pipe 1 is connected to a spring seat 6 which can slide along the main body gas pipe 1, and the pre-tightening piece 5 is in contact between the spring seat 6 and the chuck 4. The spring seat 6 is connected to a positioning screw 7, and the end of the positioning screw 7 is in contact with the outer wall of the main body gas pipe 1.

[0046] The plug 2 is tightly matched with the ring hole 10 on the ultra-thin metal ring 9, the main body gas pipe 1 is communicated between the chuck 4 and the plug 2, and the welding ring 8 is pressed between the chuck 4 and the end of the ring hole 10. The end of the welding ring 8 is correspondingly matched with the end of the ring hole 10 on the ultra-thin metal ring 9, and a weld is formed therebetween.

[0047] A high-silicon cloth layer 11 is arranged on the side wall of the plug 2. The high-silicon cloth is soft and heat-resistant, which ensures that the plug 2 and the ring hole 10 on the ultra-thin metal ring 9 can be tightly inserted and connected, and the sealing performance is ensured.

[0048] The gas core 12 is arranged on the main body air duct 1, and is arranged between the plug 2 and the chuck 4. The gas core 12 is in a tubular structure, and a plurality of air outlet holes 13 are densely arranged on the side wall of the gas core 12. The connecting column 14 is arranged on the main body air duct 1, and is tightly connected with the plug 2.

[0049] The main body air duct 1 comprises the air duct body 15, the gas core 12 and the connecting column 14. The gas core 12 is threadedly connected between the air duct body 15 and the connecting column 14. The air outlet holes 13 on the gas core 12 are circumferentially arranged, so that 360° uniform air outlet is realized, air pressure balance of each part is realized, and local high pressure and air rolling are avoided.

[0050] The limiting block 16 is arranged on the main body air duct 1, and the chuck 4 is clamped between the limiting block 16 and the pre-tightening member 5. The chuck 4 and the limiting block 16 are both arranged on the air duct body 15. The plug 2 is connected with the fastening nuts on both sides of the connecting column 14, and the two fastening nuts are respectively abutted on both sides of the plug 2.

[0051] The convex platform 17 matched with the ring 8 is arranged and welded on the end face of the chuck 4 facing the plug 2. A plurality of small exhaust holes are arranged on the chuck 4.

[0052] The main body air duct 1 is made of stainless steel, mainly considering that it can be used for a long time and the wear resistance of the thread. The length of the main body air duct 1 can be determined according to the actual use of the product. Generally, the length is recommended to be 300-1000 mm, the inner hole size is between 4 mm and 10 mm in diameter, and the outer diameter size of the main body is between 12 mm and 22 mm. The spring seat 6 is made of 304 stainless steel, mainly used for compressing the pre-tightening spring and limiting the position. The spring seat 6 is provided with a limiting step, and the pre-tightening spring abuts against the limiting step. The inner hole size of the limiting step is the outer diameter of the main body air duct 1 plus about 1 mm, which ensures that the spring seat 6 can freely slide on the main body air duct 1. The pre-tightening spring is mainly beneficial to the elasticity of the spring to compress the chuck 4 and can provide appropriate compression force. The selection of the spring is mainly based on the outer shape size of the main body air duct 1. The inner diameter size of the spring is greater than 1-2 mm and not greater than the outer diameter size of the limiting step on the spring seat 6. The chuck 4 is relatively heavy due to its large area. Considering the convenience of actual construction, aluminum alloy material is selected for manufacturing. The chuck 4 can be composed of multiple chucks 4 and can be used on various specifications of pipe fittings. The small exhaust holes with a diameter of 1.5 mm-3 mm are arranged on the chuck 4 to balance the pressure of the protection chamber. The holes can be arranged at multiple positions around the circumference. The schematic diagram only shows three evenly distributed small holes. The PCD of the small hole arrangement position is less than the inner diameter size of the welding ring 8. The limiting step is matched according to the size of the pre-tightening spring, and the depth is between 1.5 mm and 3 mm. The limiting block 16 mainly plays a phase role for the chuck 4. The air core 12 is a hollow structure, and multiple air outlet holes 13 are evenly arranged. The inner thread at one end of the air core 12 is connected with the main body air duct 1, and the outer thread at the other end is connected with the connecting column 14. The connecting column 14 mainly serves as a connecting piece between the air core 12 and the plug 2. The structure of the plug 2 can be matched according to the inner diameter size of the welding ring 8 and be smaller than the target size by 1-2 mm. Then, the high-silicon cloth layer 11 is wound around the circumference of the plug 2 to make the size of the plug 2 just fit the inner diameter size of the ring hole 10 on the ultra-thin metal ring 9. Through the elastic deformation of the high-silicon cloth, the inner diameter of the ring hole 10 is tightly matched with the plug 2 during welding.

[0053] The main body air duct 1 is fixedly connected with the sliding plate 18, the sliding plate 18 is connected with the clamping seat 19, the clamping groove 20 matched with the ultra-thin metal ring 9 is arranged on the clamping seat 19, the guide column 21 is arranged on the clamping seat 19, and two guide columns 21 are arranged, the sliding hole is arranged on the sliding plate 18, the sliding hole on the sliding plate 18 is in sliding connection with the guide column 21, the guide column 21 is connected with the abutting spring 22, the end of the guide column 21 is fixedly connected with the end cover 23, the ring groove 24 is arranged on the end cover 23, the abutting spring 22 is movably sleeved on the guide column 21, one end of the abutting spring 22 abuts against the sliding plate 18, and the other end of the abutting spring 22 abuts against the ring groove 24. The opening edge of the clamping groove 20 is provided with a chamfer, so that the ultra-thin metal ring 9 can be conveniently loaded into the clamping groove 20. The clamping seat 19 is provided with the rotating column 25 at one end, the rotating column 25 is rotatably installed on the support 26, the overturning motor 27 is installed on the support 26, the output shaft of the overturning motor 27 is connected with the driving gear 28, the driven gear ring 29 is arranged on the rotating column 25, and the driving gear 28 is in meshing transmission with the driven gear ring 29.

[0054] During the welding process, the sliding plate 18 is pulled first, the ultra-thin metal ring 9 is matched and loaded to the clamping groove 20 on the clamping seat 19 for accurate positioning, at this time, the relative position of the plug 2 and the ultra-thin metal ring 9 is accurate and reliable. The welding ring 8 is inserted into the plug 2, then the sliding plate 18 is loosened, under the action of the abutting spring 22, the plug 2 moves towards the ultra-thin metal ring 9, the plug 2 is tightly inserted into the ring hole 10 on the ultra-thin metal ring 9, one end of the welding ring 8 is in abutment with the end of the ring hole 10, and the other end of the welding ring 8 is in abutment with the chuck 4. Through the structure setting, the welding operation is assisted, the welding ring 8 and the ultra-thin metal ring 9 are accurately and reliably welded, and the working efficiency is improved.

[0055] An ultra-thin metal ring welding method, such as Figure 5As shown, the auxiliary welding is performed by using the ultra-thin metal ring 9 welding auxiliary device, including the following steps: S1, clamping and positioning the ultra-thin metal ring 9; pulling the sliding plate 18 backward, and then loading the ultra-thin metal ring 9 into the clamping groove 20 on the clamping seat 19 to realize positioning by close fitting; S2, assembling the welding ring 8 and the plug 2 together; S3, moving the main body gas guide pipe 1; loosening the sliding plate 18, and under the action of the abutting spring 22, the main body gas guide pipe 1 moves towards the ultra-thin metal ring 9, so that the plug 2 is tightly inserted into the ring hole 10 on the ultra-thin metal ring 9, one end of the welding ring 8 abuts against the end of the ring hole 10, the other end of the welding ring 8 abuts against the chuck 4, and at this time, the protection gas chamber is formed between the plug 2 and the chuck 4; S4, introducing the protective gas into the protection gas chamber through the main body gas guide pipe 1, and in this embodiment, the protective gas is argon; S5, welding the weld joint between the welding ring 8 and the end of the ring hole 10, and during the welding, a plurality of fixed points are welded in the circumferential direction at intervals, so that the welding ring 8 and the end of the ring hole 10 are first fixed, and then the upper half of the weld joint is welded; then the clamping seat 19 is turned over by the turning motor 27 to make the lower half of the weld joint face upward, and then the lower half of the weld joint is welded. After the welding is completed, the plug 2 is separated from the welding ring 8 by pulling the sliding plate 18 backward, and then the ultra-thin metal ring 9 is unloaded.

[0056] During the welding process, the plug 2 is tightly inserted into the ring hole 10 on the ultra-thin metal ring 9, one end of the welding ring 8 abuts against the end of the ring hole 10, and the other end of the welding ring 8 abuts against the chuck 4, so that the reliable positioning of the welding ring 8 is realized, and the precision of the relative position of the welding ring 8 and the ultra-thin metal ring 9 is ensured. During the welding process, the protective gas is introduced into the protection gas chamber formed between the plug 2 and the chuck 4, so that the back of the weld joint is protected by the gas, the penetration of the single-sided welding and double-sided forming can be ensured, the internal forming quality of the weld joint can be ensured, and the pores in the weld joint are reduced.

[0057] Embodiment 3: An ultra-thin metal ring welding auxiliary device (see attached Figure 6 , attached Figure 7 ), which is similar in structure to Embodiment 1 or Embodiment 2, and the main difference is that in this embodiment, the gas core 12 is provided with a partition plate 30 and a piston column 31, a plurality of radially movable positioning rods 32 are uniformly installed on the outer wall of the gas core 12 in the circumferential direction, and a hinge link 33 is connected between the upper parts of the positioning rods 32 and the piston column 31; the gas core 12 is provided with a transition hole 34, the upper end opening of the transition hole 34 is located above the partition plate 30, and the lower end opening of the transition hole 34 is covered by the piston column 31; the protective gas is introduced to drive the piston column 31 to move, the positioning rods 32 are radially moved by the hinge link 33, the positioning rods 32 are abutted against the inner walls of the ring hole 10 of the welding ring 8 and the ultra-thin metal ring 9, and at this time, the lower end opening of the transition hole 34 is exposed. Through this structure, the positioning rods 32 realize the positioning and deviation correction of the welding ring 8 and the ring hole 10, and the coaxiality of the welding ring 8 and the ring hole 10 is ensured.

[0058] The partition plate 30 is arranged above the piston column 31, the piston column 31 is fitted and arranged at the lower part of the air core 12, the air outlet hole 13 is arranged at the upper part of the air core 12, the reset spring 35 is arranged between the partition plate 30 and the upper end of the piston column 31, the avoiding slot 36 is arranged on the side wall of the air core 12 and corresponds to the connecting rod 33, the connecting rod 33 passes through the avoiding slot 36, the lower end of the connecting rod 33 is hinged on the hinge seat 37, and the hinge seat 37 is tightly connected to the upper end of the piston column 31. The slide seat 38 is arranged on the outer wall of the air core 12 and corresponds to the positioning rod 32, the slide groove 39 is arranged on the slide seat 38, the slide column 40 is arranged on the positioning rod 32, the slide column 40 is slidingly arranged in the slide groove 39, and the upper end of the connecting rod 33 is hinged with the slide column 40. The positioning heads 41 are arranged at the upper and lower ends of the positioning rod 32 and protrude outward, and the two positioning heads 41 are respectively close to the inner walls of the ring holes 10 of the welding ring 8 and the ultra-thin metal ring 9. The other structures are the same as those in any one of the embodiments 1 or 2.

[0059] The welding method of the ultra-thin metal ring is similar to that in the embodiments 1 or 2, and the main difference is that in the step S4 of the embodiment, the protective gas is introduced into the protective gas chamber through the main body gas guide pipe 1. In the initial stage, the piston column 31 is pushed, so as to push the positioning rod 32 to move radially through the connecting rod 33, the positioning heads 41 at the two ends of the positioning rod 32 are respectively close to the inner walls of the ring holes 10 of the welding ring 8 and the ultra-thin metal ring 9, at this time, the lower end opening of the transition hole 34 is no longer covered by the piston column 31, the protective gas is transmitted to the upper part of the partition plate 30 through the transition hole 34, and is discharged from the air outlet hole 13 on the air core 12 to the protective gas chamber. The other steps are the same as those in any one of the embodiments 1 or 2.

[0060] The above embodiments are only the preferred schemes of the application, and do not limit the application in any form, and other variants and modifications can be made without exceeding the technical scheme recorded in the claims.

Claims

1. An ultrathin metal ring welding auxiliary device, characterized in that, The utility model provides a kind of welding auxiliary device for ultra-thin metal ring, including main body air pipe and plug, chuck and pre-tightening piece are installed on the main body air pipe, pre-tightening piece is on the chuck, plug is tightly fitted with the ring hole on ultra-thin metal ring, main body air pipe is communicated between chuck and plug, and the welding ring is pressed between the end of chuck and ring hole;Main body air pipe is fixedly connected with sliding plate, sliding plate is connected with clamping seat, clamping groove is set on clamping seat and is fitted with ultra-thin metal ring, guide column is arranged on clamping seat, sliding plate is connected with guide column, abutting spring is connected on guide column, and abutting spring is abutted on sliding plate, rotating column is arranged on one end of clamping seat, rotating column is rotatably installed on support, overturning motor is installed on support, driving gear is connected on output shaft of overturning motor, driven gear ring is arranged on rotating column, and driving gear is engaged with driven gear ring;Air core is arranged on main body air pipe, air core is arranged between plug and chuck, and a plurality of air outlet holes are densely arranged on the side wall of air core;Partition and piston column are arranged in air core, a plurality of positioning rods are evenly arranged on the outer wall of air core and are arranged in radial direction, and connecting rod is hinged between the upper portion of positioning rod and piston column;Transition hole is arranged in air core, the upper end of transition hole is arranged above partition, and the lower end of transition hole is covered by piston column, protective gas is introduced to push piston column to move, positioning rod is pushed to move in radial direction by connecting rod, and positioning rod is fitted on the inner wall of welding ring and ring hole of ultra-thin metal ring, and the lower end of transition hole is exposed at this time.

2. The ultra-thin metal ring welding auxiliary device according to claim 1, characterized in that, High-silicon oxygen cloth layer is arranged on the side wall of plug.

3. The apparatus of claim 1, wherein the apparatus is characterized by: Limiting block is installed on main body air pipe, and chuck is clamped between limiting block and pre-tightening piece.

4. The apparatus of claim 1, wherein the apparatus is characterized by: Air core is tubular structure.

5. The ultra-thin metal ring welding auxiliary device according to claim 4, characterized in that, Connecting column is arranged on main body air pipe, and connecting column is fixedly connected with plug.

6. The apparatus of claim 1, wherein the apparatus is characterized by: Pre-tightening piece is pre-tightening spring, spring seat is connected on main body air pipe, and pre-tightening piece is abutted between spring seat and chuck.

7. The apparatus of claim 1, wherein the apparatus is configured to be used with a metal ring having a thickness of 0.5 mm or less. Boss is arranged on the end face of chuck and is fitted with welding ring.

8. The apparatus of claim 1, wherein the apparatus is characterized by: A plurality of small exhaust holes are arranged on chuck.

9. A method of welding an ultrathin metal ring, characterized by, The welding auxiliary device for ultra-thin metal ring is used for auxiliary welding, and the steps include the following steps: S1, ultra-thin metal ring is clamped and positioned;S2, welding ring and plug are sleeved together;S3, main body air pipe is moved, plug is tightly inserted into ring hole on ultra-thin metal ring, one end of welding ring is abutted with the end of ring hole, the other end of welding ring is abutted on chuck, and protective gas chamber is formed between plug and chuck at this time;S4, protective gas is introduced into protective gas chamber through main body air pipe;S5, welding seam between welding ring and the end of ring hole is welded.

Images