CN112496508B

CN112496508B - Welding device and welding method for chemical container composite plate

Info

Publication number: CN112496508B
Application number: CN202011344035.9A
Authority: CN
Inventors: 柏兆钰
Original assignee: Danyang Tongtai Chemical Machinery Co ltd
Current assignee: Danyang Tongtai Chemical Machinery Co ltd
Priority date: 2020-11-25
Filing date: 2020-11-25
Publication date: 2022-04-15
Anticipated expiration: 2040-11-25
Also published as: CN112496508A

Abstract

The invention provides a welding device for a chemical container composite plate, which comprises a welding frame, wherein the welding frame is of a portal frame structure; the two-axis sliding table is arranged on a cross beam of the portal frame and comprises an X-axis sliding table and a Z-axis sliding table, and the Z-axis sliding table is arranged on the X-axis sliding table; the reciprocating pushing sliding table is arranged on the Z-axis sliding table along the horizontal direction, a push plate is arranged on the reciprocating pushing sliding table, a push column is arranged at the bottom of the push plate, and the reciprocating pushing sliding table can drive the push plate to do reciprocating linear movement along the X-axis direction; the swinging block is hinged on the X-axis sliding table through a pivot, a guide hole is arranged in the horizontal plane on the swinging block, an included angle is formed between the guide hole and the X axis, the push column is inserted into the guide hole, and the swinging block is driven to swing left and right when the push column moves linearly in the guide hole; and the welding gun is arranged on the swinging block, and a welding pool is formed between the grooves of the two composite plates by welding when the welding gun swings left and right along with the swinging block. The invention can solve the problem that the welding efficiency and the welding precision of the composite steel plate are difficult to control by the manual electric arc welding.

Description

Welding device and welding method for chemical container composite plate

Technical Field

The invention belongs to the technical field of chemical steel plate welding, and particularly relates to a welding device and a welding method for a chemical container composite plate.

Background

The composite steel plate is a main material of a chemical container, and is prepared by taking a stainless steel plate, a nickel-based alloy or a copper-based alloy as a composite layer and taking ordinary low-carbon steel as a base layer to carry out composite rolling, wherein the base layer mainly plays a role in ensuring the strength and rigidity of the composite steel plate, and the composite layer is mainly used for ensuring the corrosion resistance of the composite steel plate.

The joint of the composite steel plates is usually subjected to manual electric arc welding, and a welding gun is held by hands to perform multilayer spot welding in the joint slope of the two composite steel plates so as to sequentially complete the welding of the inner opening and the outer opening. Because manual welding is adopted, the welding quality is determined by the experience of workers, the phenomena of poor quality consistency, uneven welding seam fish scales and the like are caused, especially when a two-point breakdown welding method is adopted, the requirement on angle control of a welding gun is higher, and the welding efficiency and the welding precision are influenced.

Disclosure of Invention

The invention aims to provide a welding device and a welding method for a composite plate of a chemical container, which aim to solve the problem that the welding efficiency and the welding precision of a composite steel plate are difficult to control by manual arc welding.

The invention provides the following technical scheme:

a chemical industry container composite sheet welding set includes:

the welding frame is of a portal frame structure, and a welding platform is arranged below the welding frame;

the two-axis sliding table is installed on a cross beam of the portal frame and comprises an X-axis sliding table and a Z-axis sliding table, and the Z-axis sliding table is installed on a sliding block of the X-axis sliding table;

the reciprocating pushing sliding table is installed on a sliding block of the Z-axis sliding table along the horizontal direction, a push plate is installed on the reciprocating pushing sliding table, a push post extending along the vertical direction is installed at the bottom of the push plate, and the reciprocating pushing sliding table can drive the push plate to do reciprocating linear movement along the X-axis direction;

the swinging block is hinged to the sliding block of the X-axis sliding table through a pivot, a guide hole is formed in the horizontal plane of the swinging block, an included angle is formed between the guide hole and the X axis, the push column is inserted into the guide hole, and the push column drives the swinging block to swing left and right when moving linearly in the guide hole;

and the welding gun is fixedly arranged on the swinging block, and a welding pool is formed between the grooves of the two composite plates by welding when the welding gun swings left and right along with the swinging block.

Preferably, be equipped with one on the push pedal and dodge the hole, the pivot runs through dodge the hole, dodge the hole for following the bar hole that the X axle direction extends, dodge the hole and dodge the pivot that removes along the X axle.

Preferably, a supporting block is mounted at the bottom of the push column, and the supporting block extends out of the guide hole to support the bottom of the swinging block.

Preferably, a connecting column is installed at the top of the push plate, and the top of the connecting column is fixed on the sliding block of the reciprocating sliding table.

Preferably, the swing block comprises a swing block body and a connecting plate which are fixedly connected, the swing block body is hinged to a sliding block of the X-axis sliding table, the connecting plate is installed along the Z-axis direction, and the welding gun is installed on the side wall of the connecting plate.

Furthermore, be equipped with curved regulation hole on the connecting plate, welder by clamp and bolt cooperation lock in on the regulation hole, the contained angle between welder and the horizontal plane by the regulation hole realizes the adjustment.

Preferably, the included angle between the welding gun and the horizontal plane is 5-10 degrees.

The invention also provides a welding method of the welding device for the chemical container composite plate, which comprises the following steps:

polishing the edges of the grooves of the two composite plates to remove oil stains and rust stains on the surfaces;

the two composite plates are horizontally placed on a welding platform, the grooves of the two composite plates are oppositely placed, and a distance of 3.2-4.0mm is reserved between the grooves;

carrying out manual tack welding at the initial welding end and the final welding end of the welding line, and preliminarily positioning the two composite plates into a whole;

moving the welding seam of the composite plate to the lower part of the welding frame, starting the two-shaft sliding table and the reciprocating sliding table, enabling the reciprocating sliding table to do linear reciprocating movement along the X-axis direction, pushing the swinging block to swing left and right, driving the welding gun to swing left and right, and enabling the welding rod to alternately aim at left and right grooves of the welding seam for welding to form a welding spot molten pool;

after one welding spot is finished, a Z-axis sliding table of the two-axis sliding table firstly lifts the welding gun for a certain distance, and then the X-axis sliding table drives the welding gun to move backwards;

and the Z-axis sliding table drives the welding gun to move downwards to compensate the height change of the welding rod, and the welding of the next welding point is started, so that the welding rod completes the welding of the welding seam.

Preferably, the installation angle of the welding gun is adjusted before the swinging block acts, so that the included angle between the welding gun and the horizontal plane is 5-10 degrees.

The invention has the beneficial effects that:

according to the invention, the reciprocating sliding table is arranged on the welding frame, the push plate is arranged on the reciprocating sliding table, the swinging block is arranged below the push plate, the reciprocating sliding table moves the push plate in a reciprocating manner along the X-axis direction, when the push plate moves, the push post pushes the guide hole to enable the swinging block to swing left and right, so that the welding gun arranged on the swinging block swings left and right, the welding rods incline to alternately point to the grooves of the two composite plates to form an oval molten pool, and the inclination angle of the welding rods does not need to be manually controlled, so that the welding line scale is neat and beautiful, the welding quality is good in consistency, and the welding precision and the welding efficiency are high.

The invention can change the swing angle of the swing block by changing the linear moving stroke of the reciprocating sliding table, so that the swing angle of the welding rod is suitable for welding seams with different widths, and the welding rod has strong use flexibility.

The reciprocating sliding table is arranged on the two-axis sliding table, so that the welding rod can be moved along the X-axis and Z-axis directions to compensate height change caused by shortening of the welding rod, and meanwhile, the X-axis sliding table drives the welding gun to move along the X-axis, so that continuous welding of a welding seam is realized.

Drawings

The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the principles of the invention and not to limit the invention. In the drawings:

FIG. 1 is a schematic front view of the present invention;

FIG. 2 is a schematic top view of the swing block of the present invention in an initial state;

FIG. 3 is a schematic top view of the swinging block of the present invention;

FIG. 4 is a schematic top view of the pusher plate of the present invention;

labeled as:

10. welding a frame; 11. welding a platform; 12. a cross beam;

20. a two-axis sliding table; an X-axis slide; 22, a Z-axis sliding table;

30. a reciprocating sliding table;

40. a swing block; 41. a pivot; 411. a support block; 42. a guide hole; 43. a pendulum block body; 44. a connecting plate; 441. an adjustment hole;

50. a welding gun;

60. pushing the plate; 61. pushing the column; 62. connecting columns; 63. avoiding holes;

70. clamping a hoop; 80. a composite board; 81. and (4) beveling.

Detailed Description

As shown in fig. 1 to 4, a welding device for composite plates of chemical containers comprises a welding frame 10, a two-axis sliding table 20, a reciprocating sliding table 30, a swing block 40 and a welding gun 50.

As shown in fig. 1, the welding stand 10 is a portal frame structure, a welding platform 11 is disposed below the welding stand 10, and two composite boards 80 are horizontally placed on the welding platform 11. The welding platform 11 may be a planar structure or may have an arc-shaped supporting surface to adapt to composite plates of different shapes.

Two slip tables 20 are installed on crossbeam 12 of portal frame 10, and two slip tables 20 include X axle slip table 21 and Z axle slip table 22, and Z axle slip table 22 is installed on the slider of X axle slip table 21, and X axle slip table 21 is used for driving welder 50 and moves along the X axle, and Z axle slip table 22 is used for changing welder 50's height.

The reciprocating sliding table 30 is installed on the slider of the Z-axis sliding table 22 along the horizontal direction, a horizontal push plate 60 is installed on the slider of the reciprocating sliding table 30, a push post 61 extending along the vertical direction is fixedly installed at the bottom of the push plate 60, and the reciprocating sliding table 30 can drive the push plate 60 to make reciprocating linear movement along the X-axis direction. Referring to fig. 1 and 4, a connecting column 62 is installed at the top of the push plate 60, the top of the connecting column 62 is fixed on the slider of the reciprocating sliding table 30, and the connecting column 62 is connected with the push plate 60, so that the weight of the push plate is reduced, and the energy consumption is reduced.

As shown in fig. 1 to 3, the swing block 40 is hinged to the sliding block of the X-axis sliding table 21 by a pivot 41, a guide hole 42 is formed in the horizontal plane of the swing block 40, an included angle is formed between the guide hole 42 and the X-axis, the push post 61 is inserted into the guide hole 42, and the push post 61 drives the swing block 40 to swing left and right when moving linearly in the guide hole 42. The size of the included angle between the guide hole 61 and the X axis determines the swing angle of the swing block 40 when the push plate 60 moves 1mm, and the smaller the included angle, the smaller the swing amplitude of the swing block 40. The push plate 60 is provided with an avoiding hole 63, the pivot 41 of the swing block 40 penetrates through the avoiding hole 63, and the avoiding hole 63 is a strip-shaped hole extending along the X-axis direction and can avoid the pivot 41 moving along the X-axis, so that action interference is avoided, and the swing stability of the swing block is ensured.

The push column 61 and the bottom of the pivot 41 are respectively screwed with a supporting block 411, the two supporting blocks 411 respectively extend out of the shaft hole and the guide hole to support the bottom of the swinging block 40, the two supporting blocks 411 support the swinging block together, the swinging block 40 is prevented from swinging due to single-point support, and the swinging block 40 can smoothly act.

The welding gun 50 is fixedly installed on the swing block 40, and the welding gun 50 alternately welds between the grooves 81 of the two composite plates 80 to form a molten pool when swinging left and right along with the swing block. Specifically, the swing block 40 comprises a swing block body 43 and a connecting plate 44 which are fixedly connected, the swing block body 43 is hinged with a sliding block of the X-axis sliding table 21, the connecting plate 44 is installed on the swing block body 43 along the Z-axis direction, the welding gun 50 is installed on the side wall of the connecting plate 44, and the included angle between the welding gun 50 and the horizontal plane is 5-10 degrees.

Two arc-shaped adjusting holes 441 are arranged on the connecting plate 44 at intervals, the welding gun 50 is locked on the adjusting holes 441 of the connecting plate 44 through the cooperation of the clamps 70 and the bolts, and the included angle between the welding gun 50 and the horizontal plane is adjusted through the adjusting holes 441. Wherein, the clamp 70 embraces the main part of the welding gun 50 tightly, the installation surface of the clamp 70 is symmetrically provided with at least four threaded holes, and the bolt locks the clamp 70 on the adjusting hole 441 of the connecting plate through the threaded holes.

The invention also provides a welding method of the chemical container composite plate welding device, which comprises the following steps:

wiping oil stains at the grooves 81 of the composite plates by using acetone, and polishing the grooves 81 of the two composite plates by using an angle grinder so as to remove oil stains and rust stains on the surfaces;

horizontally placing the two composite plates 80 on the welding platform 11, wherein the grooves 81 of the two composite plates 80 are oppositely arranged and a distance of 3.2-4.0mm is reserved between the two composite plates;

manual tack welding is carried out at the initial welding end and the final welding end of the welding line, and the two composite plates 80 are initially positioned into a whole, so that the welding precision of the subsequent welding line is improved;

moving the welding seam of the composite plate 80 to the lower part of the welding frame 10, and adjusting the installation angle of the welding gun 50 to ensure that the included angle between the welding gun 50 and the horizontal plane is 5-10 degrees;

starting the two-axis sliding table 20 and the reciprocating sliding table 30, wherein the reciprocating sliding table 30 makes linear reciprocating movement along the X-axis direction to push the swing block 40 to swing left and right, so as to drive the welding gun 50 to swing left and right, so that welding rods are alternately aligned with left and right grooves of a welding seam to weld to form a welding spot molten pool, and at the moment, the X-axis sliding table 21 does not work;

after one welding spot is finished, the Z-axis sliding table 22 of the two sliding tables drives the welding gun 50 to move upwards for a certain distance, so that the welding rod is not contacted with the composite plate temporarily, and the X-axis sliding table 21 drives the welding gun to move backwards to prepare for starting the welding of the next welding spot;

as the length of the welding rod becomes shorter, the Z-axis sliding table 22 drives the welding gun 50 to move downwards to compensate the height change of the welding rod from the welding seam, so that the welding rod can accurately complete the welding of the welding seam;

repeating the steps until the welding of the whole welding line is completed, and resetting each sliding table.

Although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that changes may be made in the embodiments and/or equivalents thereof without departing from the spirit and scope of the invention. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. The utility model provides a chemical industry container composite sheet welding set which characterized in that includes:

2. The chemical container composite plate welding device as claimed in claim 1, wherein the push plate is provided with an avoiding hole, the pivot penetrates through the avoiding hole, the avoiding hole is a strip-shaped hole extending along the X-axis direction, and the avoiding hole avoids the pivot moving along the X-axis.

3. The chemical container composite plate welding device as claimed in claim 2, wherein a support block is installed at the bottom of the push post, and the support block extends out of the guide hole to support the bottom of the swing block.

4. The chemical container composite board welding device according to claim 3, wherein a connecting column is installed at the top of the pushing plate, and the top of the connecting column is fixed on a sliding block of the reciprocating sliding table.

5. The chemical container composite board welding device according to claim 4, wherein the swing block comprises a swing block body and a connecting plate, the swing block body is fixedly connected with the swing block body, the swing block body is hinged with the sliding block of the X-axis sliding table, the connecting plate is installed along the Z-axis direction, and the welding gun is installed on the side wall of the connecting plate.

6. The chemical container composite board welding device according to claim 5, wherein the connecting plate is provided with an arc-shaped adjusting hole, the welding gun is locked on the adjusting hole through a clamp and a bolt in a matching manner, and an included angle between the welding gun and a horizontal plane is adjusted through the adjusting hole.

7. The chemical container composite plate welding device according to claim 6, wherein the included angle between the welding torch and the horizontal plane is 5-10 °.

8. The welding method of the chemical container composite board welding device according to claim 1, characterized by comprising the following steps:

after one welding spot is finished, the Z-axis sliding table of the two-axis sliding table firstly lifts the welding gun, and then the X-axis sliding table drives the welding gun to move backwards;

9. The welding method of the chemical container composite plate welding device according to claim 8, wherein the installation angle of the welding torch is adjusted to make the included angle between the welding torch and the horizontal plane 5-10 ° before the swing block is operated.