Argon filling device for interior of tip-shaped pipeline of welding positioner

Abstract

The utility model discloses a tip-shaped pipeline interior argon filling device of a welding positioner. The tip-shaped pipeline interior argon filling device comprises a positioner base (1), a motor (2), a three-jaw chuck (3), a tubular workpiece (4), a positioner tip assembly (5) and an air cylinder (6). The motor (2) is supported and mounted at one end of the positioner base (1), the end part of an output shaft of the motor (2) is connected with the three-jaw chuck (3), and the three-jaw chuck (3) is used for clamping one end of a tubular workpiece (4); the air cylinder (6) is installed at the other end of the positioner base (1) in a supporting mode, the output end of the air cylinder (6) is connected with the positioner center (5) assembly, the positioner center assembly (5) is close to the other end of the tubular workpiece (4), and the tubular workpiece (4) is filled with argon through the positioner center assembly (5). The principle of thick inlet and thin outlet is designed for the gas inlet channel, gas enters the tip through the argon bottle flowmeter, and the pressurization effect can be highlighted.

Description

TECHNICAL FIELD

[0001] The utility model belongs to nonferrous metal material pipe welding technical field relates to a kind of welding positioner tailstock-like pipeline internal argon filling device, it is applicable to the welding of pressure vessel with weld grade above two. BACKGROUND

[0002] When nonferrous metal pipeline pressure vessel, all welds adopt V groove, single-sided welding double-sided forming, when all adopt tungsten argon arc welding or gas tungsten arc welding, container back weld must be protected by sufficient inert gas, and weld can be qualified, otherwise oxidation, embrittlement, spew and porosity, which will affect the quality of container welding, so according to welding environment and working conditions, a kind of argon filling device is designed to realize container internal gas protection.

[0003] Original welding positioner and pneumatic tailstock device can only play the role of workpiece clamping and rotation, and pressure vessel cannot be filled with argon in the internal rotation of positioner, because all gas cylinder containers only have one end head design gas inlet and outlet hole, and tailstock is on the gas inlet of gas cylinder, so as to cooperate with three-jaw chuck work, when gas inlet is clamped by tailstock, there is no other hole for argon protection. UTILITY MODEL CONTENTS

[0004] (I) utility model purpose

[0005] The utility model aims at providing a kind of welding positioner tailstock-like pipeline internal argon filling device, solves the welding defects such as oxidation, embrittlement, weld spew and welding porosity in the internal weld of nonferrous metal pipe, improves the first-time inspection qualified rate of product welding, and improves the welding efficiency of nonferrous metal pipe.

[0006] (II) technical scheme

[0007] In order to solve the above technical problems, the utility model provides a kind of welding positioner tailstock-like pipeline internal argon filling device, which includes: positioner base 1, motor 2, three-jaw chuck 3, tubular workpiece 4, positioner tailstock assembly 5, cylinder 6;Positioner base 1 one end supports and installs motor 2, and the output shaft end of motor 2 is connected with three-jaw chuck 3, and three-jaw chuck 3 clamps one end of tubular workpiece 4;Positioner base 1 other end supports and installs cylinder 6, and the output end of cylinder 6 is connected with positioner tailstock 5 assembly, and positioner tailstock assembly 5 is close to the other end of tubular workpiece 4, and argon is filled into tubular workpiece 4 by positioner tailstock assembly 5.

[0008] The positioner top center assembly 5 comprises a bearing seat 9, a bearing 8, a top center head 7, an air inlet pipe 10 and an argon rubber pipe 11, the bearing 8 is installed at one end of the bearing seat 9, the rear end of the top center head 7 is installed on the bearing 8, the other end of the bearing seat 9 is connected to the output end of the air cylinder 6, the first axial air passage and the radial air passage connected with the first axial air passage are formed on the bearing seat 9 from the front end to the middle part, the air inlet pipe 10 is installed in the radial air passage, and the air inlet pipe 10 is connected with an external argon source through the argon rubber pipe 11.

[0009] The inner hole diameter of the bearing 8 is consistent with the outer diameter of one end of the bearing seat 9, and the outer diameter of the bearing 8 is consistent with the inner diameter of the rear end of the top center head 7.

[0010] The front end of the top center head 7 is conical, and the rear end is columnar; the second axial air passage is formed in the front part of the conical end, the rear part is a circular truncated cone-shaped inner cavity, and the columnar end rear part is provided with a columnar cavity, and the bearing 8 is installed in the columnar cavity.

[0011] The first axial air passage, the circular truncated cone-shaped inner cavity and the second axial air passage are coaxially connected.

[0012] The tubular workpiece 4 is a gas cylinder or a pipeline part.

[0013] The second axial air passage of the front end of the top center head 7 is a diameter 1.8 hole, and the first axial air passage of the front end of the bearing seat 9 is a coaxial hole with a diameter of 1.8.

[0014] The diameter of the radial air passage in the middle part of the bearing seat 9 is 5.0, and the diameter of the first axial air passage is 1.8, forming a vertical L-shaped intersection hole, and an iron pipe with a diameter of 6.0 is welded outside the radial air passage as the air inlet pipe 10, and the argon rubber pipe 11 is connected with the air inlet pipe 10.

[0015] The air cylinder 6 is provided with an air switch, when the air switch is opened, the top center head 7 is driven by compressed air to clamp the tubular workpiece 4 on the positioner base 1.

[0016] When the argon source switch is opened, the gas flow is adjusted to 10-15 L / min, and the argon gas flows into the tubular workpiece 4 from the top center head 7.

[0017] (Three) beneficial effects

[0018] The welding positioner top center pipe internal argon filling device provided by the above technical scheme has the following beneficial effects:

[0019] (1) The welding positioner is provided with an L-shaped air inlet channel hollow top center, the air inlet channel is designed according to the principle of thick inlet and thin outlet, and the gas enters the top center through the argon cylinder flow regulator, which can highlight the pressurization effect.

[0020] (2) the taper center top tight workpiece, the positioner rotates and drives the taper bearing to rotate, has the synchronous linkage effect with the positioner, and is designed according to the principle of thick in and thin out through the air inlet channel, gas is sprayed powerfully, and the advanced nature of sufficient gas protection of the weld in the pipeline is achieved. BRIEF DESCRIPTION OF DRAWINGS

[0021] Figure 1 The figure shows the assembly relationship of the argon filling device for the welding positioner and the taper;

[0022] Figure 2 The figure shows the disassembly of the argon filling taper. DETAILED DESCRIPTION

[0023] In order to make the purpose, content and advantages of the utility model more clear, the specific implementation of the utility model is described in further detail below in combination with the drawings and examples.

[0024] Referring to Figure 1 The argon filling device in the taper-shaped pipeline of the welding positioner of the embodiment includes a positioner base 1, a motor 2, a three-jaw chuck 3, a tubular workpiece 4, a positioner taper assembly 5 and a gas cylinder 6. One end of the positioner base 1 supports and installs the motor 2, the output shaft end of the motor 2 is connected to the three-jaw chuck 3, and the three-jaw chuck 3 clamps one end of the tubular workpiece 4. The other end of the positioner base 1 supports and installs the gas cylinder 6, the output end of the gas cylinder 6 is connected to the positioner taper assembly 5, the positioner taper assembly 5 is close to the other end of the tubular workpiece 4, and the positioner taper assembly 5 fills argon into the tubular workpiece 4.

[0025] The positioner taper assembly 5 includes a bearing seat 9, a bearing 8, a taper head 7, an air inlet pipe 10 and an argon rubber pipe 11. The bearing 8 is installed at one end of the bearing seat 9, the rear end of the taper head 7 is installed on the bearing 8, the other end of the bearing seat 9 is connected to the output end of the gas cylinder 6, a first axial air hole and a radial air hole communicating with the first axial air hole are formed in the bearing seat 9 from the front end to the middle part, the air inlet pipe 10 is installed in the radial air hole, and the air inlet pipe 10 is connected to an external argon source through the argon rubber pipe 11.

[0026] The inner hole diameter of the bearing 8 is consistent with the outer diameter of one end of the bearing seat 9, and the outer diameter of the bearing 8 is consistent with the inner diameter of the rear end of the taper head 7.

[0027] The front end of the taper head 7 is conical, and the rear end is columnar. A second axial air hole is formed in the front part of the conical end, the rear part is a circular truncated cone-shaped inner cavity, a columnar cavity is formed in the rear part of the columnar end, and the bearing 8 is installed in the columnar cavity.

[0028] The first axial air hole, the circular truncated cone-shaped inner cavity and the second axial air hole are coaxially communicated.

[0029] The tubular workpiece 4 is a gas cylinder or a pipeline part.

[0030] The second axial vent hole in the front end of the top head 7 is a coaxial hole with a diameter of 1.8, and the first axial vent hole in the front end of the bearing seat (9) is a coaxial hole with a diameter of 1.8.

[0031] The radial vent hole in the middle of the bearing seat 9 has a diameter of 5.0, and forms a vertical L-shaped intersection hole with the first axial vent hole with a diameter of 1.8. An iron pipe with a diameter of 6.0 is welded as an air inlet pipe 10 outside the radial vent hole, and an argon rubber pipe 11 is connected with the air inlet pipe 10.

[0032] The gas cylinder and pipeline parts are assembled on the welding positioner in the direction of the top head, the end of the part is fixed by using the three-jaw chuck of the positioner, and then the top head is placed on the gas inlet of the gas cylinder or the gas inlet of the pipeline. The air switch of the air cylinder of the positioner is opened, and the workpiece is clamped on the positioner under the driving of compressed air. At this time, the argon cylinder switch is opened, and the gas flow is adjusted to 10-15 L / min. At this time, the argon gas flows into the gas cylinder or the pipeline from the top head hole, and the argon filling is completed in 1 minute. After the argon concentration meets the standard, welding can be carried out. The tungsten argon arc welding is used for welding seam bottoming operation. The argon arc welding melting speed of the base material and the rotation speed of the positioner are adjusted. The pipe welding position is always kept in the flat position by using the positioner, which is beneficial to welding operation. The welding equipment is WSME-500 AC / DC argon arc welding, the welding gun is 300A, the welding wire is ER308L 2.0 straight wire, and the argon filling flow is adjusted to 5-8 L / min when the sealing is completed. At this time, the whole circle of the welding seam is successfully sealed.

[0033] The above is only the preferred embodiment of the present application, and it should be pointed out that for ordinary skilled persons in the technical field, without departing from the technical principle of the present application, a number of improvements and deformations can be made, and these improvements and deformations should be regarded as the protection range of the present application.

Claims

1. A device for argon filling inside of a pipe in a top dead center of a welding positioner, characterized in that, The utility model relates to a kind of variable positioner, including: variable positioner base (1), motor (2), three-jaw chuck (3), tubular workpiece (4), variable positioner centre assembly (5), cylinder (6);Variable positioner base (1) one end supports and installs motor (2), motor (2) output shaft end connection three-jaw chuck (3), three-jaw chuck (3) clamps one end of tubular workpiece (4);Variable positioner base (1) other end supports and installs cylinder (6), the output end of cylinder (6) connects variable positioner centre assembly (5), variable positioner centre assembly (5) is close to the other end of tubular workpiece (4), and tubular workpiece (4) is filled with argon by variable positioner centre assembly (5). Variable positioner centre assembly (5) includes bearing seat (9), bearing (8), centre head (7), gas inlet pipe (10), argon rubber tube (11), bearing (8) is installed in bearing seat (9) one end, centre head (7) rear end is installed on bearing (8), the other end of bearing seat (9) connects the output end of cylinder (6), and first axial air hole and radial air hole that is communicated first axial air hole are set up from front end to middle part on bearing seat (9), and gas inlet pipe (10) is installed in radial air hole, and gas inlet pipe (10) is connected external argon source by argon rubber tube (11).

2. The apparatus for welding a pipe according to claim 1, wherein The inner hole diameter of bearing (8) is consistent with the outer diameter of bearing seat (9) one end, and the outer diameter of bearing (8) is consistent with the inner diameter of centre head (7) rear end.

3. The apparatus according to claim 2, wherein the welding positioner top pin shaped pipe interior argon filling device is characterized by, Centre head (7) front end is conical, and rear end is columnar;Second axial air hole is set up in the front part of conical end, and rear part is circular truncated cone inner cavity, and columnar end rear part sets up columnar cavity, and bearing (8) is installed in columnar cavity.

4. The apparatus according to claim 3, wherein the welding positioner top pin shaped pipe internal argon filling device is characterized by, First axial air hole, circular truncated cone inner cavity, second axial air hole are coaxially communicated.

5. The apparatus of claim 4, wherein the welding positioner top pin shaped pipe interior argon filling device further comprises: Tubular workpiece (4) is gas cylinder or pipeline parts.

6. The apparatus of claim 5, wherein the welding positioner top pin shaped pipe interior argon filling device further comprises: Second axial air hole of centre head (7) front end is diameter 1.8 hole, and first axial air hole of bearing seat (9) front end is coaxial hole with diameter 1.

8.

7. The apparatus of claim 6, wherein the welding positioner top pin shaped pipe interior argon filling device further comprises, Bearing seat (9) middle part radial air hole diameter is 5.0, and forms vertical L type intersection hole with diameter 1.8 first axial air hole, and one diameter 6.0 iron pipe is welded as gas inlet pipe (10) outside radial air hole, and argon rubber tube (11) is connected with gas inlet pipe (10).

8. The apparatus of claim 7, wherein the welding positioner top pin shaped pipe interior argon filling device further comprises, Cylinder (6) sets up air switch, air switch opens, and centre head (7) is clamped in variable positioner base (1) under the drive of compressed air with tubular workpiece (4).

9. The apparatus of claim 8, wherein the welding positioner top pin shaped pipe interior argon filling device further comprises, Argon source switch opens, and gas flow is adjusted to 10-15L / min, and argon flows into tubular workpiece (4) from centre head (7).

10. The apparatus of claim 9, wherein the welding positioner top pin shaped pipe interior argon filling device further comprises: ​

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