A welding device for stainless steel liquid storage tank

Abstract

The invention discloses a welding device for a stainless steel liquid storage tank, which relates to the technical field of tank body welding, and comprises a rotating shaft, a ring groove is provided on the circumferential surface of the rotating shaft, and the ring groove is in a ring shape, supporting mechanisms are arranged at both ends of the rotating shaft, and the supporting mechanisms are used to move inside the tank body, a fixing ring is arranged at one end of the ring groove of the rotating shaft, and one end of the fixing ring is fixedly fitted with one end of the ring groove, a telescopic motor is arranged at one end of a telescopic member, and the output end of the telescopic motor is connected with a control gear, a sliding member is connected to one side of the control gear, and a welding gun is arranged under the sliding member, and a driving motor is arranged at the other end of the telescopic member, and the driving motor is used to drive the supporting mechanism to expand; the telescopic member drives the telescopic motor to reciprocate, and the telescopic motor drives the control gear to drive the sliding member to reciprocate, and the device improves the degree of freedom of welding by reciprocatingly sliding in the tank, realizes multi-angle welding, thereby avoiding the influence of arc surface on welding, and improving welding efficiency and quality.

Description

Technical Field

[0001] The invention relates to the technical field of tank body welding, and more specifically to a welding device for a stainless steel liquid storage tank. Background Art

[0002] Stainless steel liquid storage tanks are liquid storage containers made of stainless steel materials using argon arc welding. They are widely used in the chemical, petroleum, pharmaceutical, and food industries. Stainless steel liquid storage tanks have the characteristics of high strength and good sealing. Stainless steel storage tanks have various sizes and shapes to meet different storage needs. In the production process of stainless steel liquid storage tanks, the existing technology places the welding wire at the joint of the stainless steel material, and then passes a high-voltage current to melt the welding wire and the stainless steel material at the joint, and fuse them together to be fixed. At the same time, argon gas is passed during the welding process to protect the welding area to prevent oxygen from affecting the quality of the weld.

[0003] However, during the welding process, since the stainless steel liquid storage tank has more arc connections, when welding to the arc surface, due to the influence of the angle of the arc surface, the workers are blocked and hindered by the arc surface during the welding process, which makes it inconvenient for the workers to weld, resulting in unstable welding, thereby affecting the welding quality and the sealing of the stainless steel liquid storage tank. For this reason, the prior art proposes a large tank body welding device, which enables the welding gun to move in a zigzag route through the cooperation of a screw rod, an internal threaded rod and a telescopic rod to simulate the swing of the welding gun during manual welding, thereby improving the beauty and uniformity of the texture at the welding point. At the same time, the position of the welding gun is changed by the telescopic rod to adapt to the internal welding of the weld of tanks with different inner diameters. However, the problem that the arc surface blocks the welding, making welding difficult and thus affecting the welding quality is still not solved.

[0004] In view of the above situation, the present invention designs a welding device for a stainless steel liquid storage tank to solve the above technical problems. Summary of the invention

[0005] In view of the shortcomings of the prior art, the purpose of the present invention is to provide a welding device for a stainless steel liquid storage tank, which improves the freedom of welding by reciprocating sliding in the tank, realizes multi-angle welding, thereby avoiding the influence of arc surface on welding, and improving welding efficiency and quality.

[0006] To achieve the above object, the present invention provides the following technical solutions:

[0007] A welding device for a stainless steel liquid storage tank is used for welding the internal integral structure of the stainless steel liquid storage tank, comprising a rotating shaft, a circular groove is provided on the circumferential surface of the rotating shaft, and the circular groove is in a circular ring shape, support mechanisms are arranged at both ends of the rotating shaft, and the support mechanisms are used to move inside the tank body, a fixing ring is arranged at one end of the circular groove of the rotating shaft, one end of the fixing ring is fixedly fitted with one end of the circular groove, the fixing ring is in an "8"-shaped structure, one end of the fixing ring is coaxially installed with the rotating shaft, and the other end of the fixing ring is coaxially arranged with a telescopic member; a telescopic motor is arranged at one section of the telescopic member, and the output end of the telescopic motor is connected to a control gear, a sliding member is connected to one side of the control gear, and a welding gun is arranged below the sliding member, and a driving motor is arranged at the other end of the telescopic member, and the driving motor is used to drive the supporting mechanism to expand; the telescopic member drives the telescopic motor to reciprocate, the telescopic motor drives the control gear to drive the sliding member to reciprocate, and the control gear drives the sliding member to rotate around the circumference of the rotating shaft, thereby realizing linear and annular welding of the inside of the tank body.

[0008] Preferably, the supporting mechanism includes a driving gear, a driven gear, a fixed plate and a supporting rod, the driving gear is arranged at the output shaft end of the driving motor, and the driving gear is connected to the output end of the driving motor, the driven gear is arranged below the driving gear, and the driven gear is meshed with the driving gear, the driven gear is arranged on the fixed plate, and a driving groove is provided in an annular manner on the driven gear, a plurality of movable grooves are provided on the fixed plate, a supporting rod is provided in the movable groove, an arc-shaped supporting sheet is provided at the front end of the supporting rod, a limiting column is provided at the rear end of the supporting rod, and the limiting column is provided in the driving groove.

[0009] Preferably, the sliding member includes a long gear, a limit plate, a rotating gear, a support plate, a fixed rod and a locking mechanism, the long gear is arranged in an annular groove, a limit plate is arranged on one side of the long gear, and a rotating gear is arranged on the other side of the long gear, the rotating gear is connected to the support plate on the side away from the long gear, and the rotating gear and the support plate are coaxially arranged on the long gear, a sliding groove is opened on the support plate, a fixed rod is arranged in the sliding groove, and one end of the fixed rod is connected to an arc-shaped piece, and a fixed column is arranged on the other end of the fixed rod, and the fixed column cooperates with the rotating groove on the rotating gear.

[0010] Preferably, an arc-shaped block is arranged on the arc-shaped supporting piece, and the arc-shaped block is arranged obliquely on the arc-shaped supporting piece, and the length of the arc-shaped block gradually decreases from large to small.

[0011] Preferably, the supporting mechanism is arranged at both ends of the rotating shaft, and the inclination directions of the arc-shaped blocks on the arc-shaped supporting sheet are opposite.

[0012] Preferably, a triangular ring groove is provided between the long gear and the rotating gear, and the triangular ring groove is used to place a locking mechanism. The telescopic member drives the control gear to reciprocate, and the meshing position of the control gear is determined by the locking mechanism.

[0013] Preferably, the locking mechanism includes a buckle compartment, a spring and a buckle, the buckle compartment is arranged on one side of the control gear, and the buckle compartment is in contact with the control gear, the buckle compartment is provided with a buckle, and the buckle is connected to the buckle compartment through a spring.

[0014] Preferably, the buckle is a triangular mechanism, and the reciprocating motion of the control gear drives the buckle to contact the triangular ring groove.

[0015] Preferably, a hard sponge is arranged above the arc-shaped sheet, and the fixing rod slides in the slide groove and fits the inner wall of the tank body, and the friction force generated between the hard sponge and the tank body is used to fix the entire device. Beneficial effects of the present invention:

[0016] 1. The present invention provides a welding device for a stainless steel liquid storage tank, which drives a telescopic motor to reciprocate through a telescopic part, and the telescopic motor drives a control gear to drive a sliding part to move, and the control gear can drive the sliding part to rotate around a rotating shaft, thereby realizing annular and linear welding on the inner wall of the tank body, avoiding the obstruction and hindrance of the arc surface during manual welding, thereby causing unstable welding and affecting the welding quality. At the same time, since overhead welding is required when manual annular welding is performed, this welding method may cause the welding material to fall on the operator during the welding process. However, the present application drives the sliding part to rotate around the rotating shaft through a control gear to avoid the phenomenon of welding material falling.

[0017] 2. The present invention provides a welding device for a stainless steel liquid storage tank. The device supports the inner wall of the tank body through a supporting mechanism, so as to avoid welding instability during the welding process, which may cause the weld to deviate and the weld quality to decline. At the same time, when the supporting mechanism rotates forward, the weld can be surface treated to ensure the quality of the welding. At the same time, the supporting mechanism cooperates with the sliding part to achieve the treatment of welding slag on the welding surface after welding is completed, so as to ensure the surface quality of the weld. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0019] Figure 2 It is a schematic diagram of the overall structure of the present invention from left to right;

[0020] Figure 3 It is a partial view of the support mechanism of the present invention;

[0021] Figure 4 It is a schematic diagram of the overall structure of the sliding member of the present invention;

[0022] Figure 5 It is a partial schematic diagram of the sliding member of the present invention;

[0023] Figure 6 For the present invention Figure 5 A partial enlarged view of the middle A;

[0024] Figure 7 A partial cross-sectional view of a sliding member of the present invention;

[0025] Reference numerals:

[0026] 1. Rotating shaft; 11. Annular groove; 2. Support mechanism; 21. Driving motor; 22. Active gear; 23. Driven gear; 231. Driving groove; 24. Fixed plate; 241. Moving groove; 25. Support rod; 251. Arc-shaped supporting sheet; 252. Arc-shaped block; 253. Limiting column; 3. Fixed ring; 4. Telescopic member; 5. Telescopic motor; 51. Control gear; 6. Sliding member; 61. Long gear; 62. Limiting plate; 63. Rotating gear; 631. Rotating groove; 64. Support plate; 641. Sliding groove; 65. Fixed rod; 651. Arc-shaped sheet; 652. Hard sponge; 653. Fixed column; 66. Locking mechanism; 661. Buckle magazine; 662. Spring; 663. Buckle; 67. Triangular ring groove; 7. Welding gun. DETAILED DESCRIPTION

[0027] In order to make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the technical solution of the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings of the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, rather than all the embodiments. Based on the described embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work belong to the scope of protection of the present invention.

[0028] refer to Figures 1 to 7A welding device for a stainless steel liquid storage tank is used for welding the internal integral structure of the stainless steel liquid storage tank, comprising a rotating shaft 1, a circular groove 11 is provided on the circumferential surface of the rotating shaft 1, and the circular groove 11 is in a circular ring shape, support mechanisms 2 are arranged at both ends of the rotating shaft 1, and the support mechanisms 2 are used to move inside the tank body, a fixing ring 3 is arranged at one end of the circular groove 11 of the rotating shaft 1, one end of the fixing ring 3 is fixedly fitted with one end of the circular groove 11, and the fixing ring 3 is in an "8" shape structure, one end of the fixing ring 3 is coaxially installed with the rotating shaft 1, and the other end of the fixing ring 3 is coaxially arranged with the telescopic member 4 ; A telescopic motor 5 is provided at one end of the telescopic member 4, and the output end of the telescopic motor 5 is connected to a control gear 51, one side of the control gear 51 is connected to a sliding member 6, and a welding gun 7 is provided under the sliding member 6, and a driving motor 21 is provided at the other end of the telescopic member 4, and the driving motor 21 is used to drive the supporting mechanism 2 to unfold; the telescopic member 4 drives the telescopic motor 5 to reciprocate, the telescopic motor 5 drives the control gear 51 to drive the sliding member 6 to reciprocate, and the control gear 51 drives the sliding member 6 to rotate in a circle around the rotating shaft 1, thereby realizing linear and annular welding of the inside of the tank body.

[0029] During the working process, the staff first puts the whole device into the tank body, and then starts the driving motor 21. The driving motor 21 drives the supporting mechanism 2 to support the inner wall of the tank body. After the support is completed, the driving motor 21 drives the whole device to move to the specified position. During the movement, the welding surface can be treated by the supporting mechanism 2 and the sliding member 6, so as to ensure a good welding environment. When arriving at the welding position, first determine whether it is a circular weld or a linear weld to be welded. If it is a linear weld to be welded, the telescopic motor 5 is driven by the telescopic member 4 so that the telescopic motor 5 moves left and right. The telescopic motor 5 is displaced left and right to drive the control gear 51 to move left and right, so that the control gear 51 is engaged with the sliding member 6 at different positions. The annular weld is first driven by the telescopic motor 5 to rotate and drive the control gear 51 to drive the sliding member 6, so that the sliding member 6 fits the inner wall of the tank body, and then the sliding member 6 is driven to rotate by the control gear 51. At this time, the welding gun 7 is turned on to weld the welding position. After welding is completed, the sliding member 6 is driven to shrink by the control gear 51, and then the support mechanism 2 is driven to move toward the tank outlet by the drive motor 21. During the movement, the welding slag at the weld can be processed to ensure the quality of the weld.

[0030] The support mechanism 2 includes a driving gear 22, a driven gear 23, a fixing plate 24 and a support rod 25. The driving gear 22 is arranged at the output shaft end of the driving motor 21, and the driving gear 22 is connected to the output end of the driving motor 21. The driven gear 23 is arranged below the driving gear 22, and the driven gear 23 is meshed with the driving gear 22. The driven gear 23 is arranged on the fixing plate 24, and a driving groove 231 is annularly provided on the driven gear 23. A plurality of moving grooves 241 are provided on the fixing plate 24, and a support rod 25 is arranged in the moving groove 241. An arc-shaped supporting sheet 251 is arranged at the front end of the support rod 25, and a limiting column 253 is arranged at the rear end of the support rod 25, and the limiting column 253 is arranged in the driving groove 231.

[0031] During the working process, the driving motor 21 drives the driving gear 22 to rotate, the driving gear 22 is meshed with the driven gear 23, and the driven gear 23 rotates, and the limiting column 253 set at one end of the support rod 25 is driven to move in the driving groove 231 through the driving groove 231 starting from the driven gear 23. At this time, the support rod 25 slides in the moving groove 241 on the fixed plate 24, and the support rod 25 slides in the moving groove 241 until the arc-shaped support piece 251 fits with the inner wall of the tank body and stops moving, thereby ensuring the stability of the welding process and avoiding the phenomenon of instability causing the weld to be skewed.

[0032] The sliding member 6 includes a long gear 61, a limit plate 62, a rotating gear 63, a support plate 64, a fixed rod 65 and a locking mechanism 66. The long gear 61 is arranged in the annular groove 11, a limit plate 62 is arranged on one side of the long gear 61, and a rotating gear 63 is arranged on the other side of the long gear 61. The rotating gear 63 is connected to the support plate 64 on the side away from the long gear 61, and the rotating gear 63 and the support plate 64 are coaxially arranged on the long gear 61. A sliding groove 641 is opened on the support plate 64, and a fixed rod 65 is arranged in the sliding groove 641, and one end of the fixed rod 65 is connected to an arc piece 651, and the other end of the fixed rod 65 is provided with a fixed column 653, and the fixed column 653 cooperates with the rotating groove 631 on the rotating gear 63.

[0033] During operation, the long gear 61 is driven to rotate by the control gear 51. The rotation of the long gear 61 can drive the sliding member 6 to rotate around the rotating shaft 1 as a whole. At this time, the welding gun 7 is turned on to weld the annular surface of the inner wall of the tank body. When the control gear 51 drives the rotating gear 63 to rotate, the rotating groove 631 on the rotating gear 63 drives the fixed column 653 to slide in the rotating groove 631. At this time, the fixed rod 65 slides in the moving groove 241 provided on the support plate 64 until the arc-shaped piece 651 at one end of the fixed rod 65 fits with the inner wall of the tank body. The rotating gear 63 stops driving the fixed rod 65 to slide. At this time, the support of the inner wall of the tank body is completed. When the sliding member 6 is driven to move in the annular groove 11 by the telescopic member 4, the welding gun 7 can be turned on to weld the linear weld on the inner wall of the tank body.

[0034] An arc block 252 is arranged on the arc support piece 251, and the arc block 252 is arranged obliquely on the arc support piece 251, and the length of the arc block 252 gradually decreases from large to small. Through such an arrangement, when the driving groove 231 on the driven gear 23 drives the limiting column 253 to support the inner wall of the tank body, when the driven gear 23 continues to apply power, it can drive the arc support piece 251 to move inward along the inner wall of the tank body.

[0035] The support mechanism 2 is arranged at both ends of the rotating shaft 1, and the inclination directions of the arc blocks 252 on the arc support sheet 251 are opposite. Through such an arrangement, when the driving motor rotates to drive the supporting mechanism to fully support the inner wall of the tank body, the driving motor continues to rotate at this time, and when the arc support sheet is attached to the inner wall of the tank body and rotates, when the driving motor turns in the same direction, the arc block 252 with the same inclination direction as the driving motor makes the support structure drive the rotating shaft from the outside to the inside of the tank body, and the arc block 252 with the opposite inclination direction to the driving motor makes the support structure drive the rotating shaft to leave the inside of the tank body.

[0036] A triangular ring groove 67 is provided between the long gear 61 and the rotating gear 63, and the triangular ring groove 67 is used to place a locking mechanism 66. The telescopic member 4 drives the control gear 51 to reciprocate, and the meshing position of the control gear 51 is determined by the locking mechanism 66. Through such a setting, the triangular ring groove 67 cooperates with the locking mechanism 66 to ensure the accuracy of the meshing of the long gear 61 and the rotating gear 63 with the control gear 51, and avoid the phenomenon of tooth collision.

[0037] The locking mechanism 66 includes a buckle magazine 661, a spring 662 and a buckle 663. The buckle magazine 661 is arranged on one side of the control gear 51, and the buckle magazine 661 is in contact with the control gear 51. The buckle magazine 661 is provided with a buckle 663, and the buckle 663 is connected to the buckle 663 magazine through a spring 662. The buckle 663 is a triangular mechanism. The reciprocating motion of the control gear 51 drives the buckle 663 to contact the triangular ring groove 67. The advantage of such a design is that when the buckle 663 contacts the triangular ring groove 67, the buckle 663 contacts the inclined surface of the slot by moving the position of the control gear 51, thereby canceling the locking of the buckle 663, and the control gear 51 can engage with the long gear 61 or the rotating gear 63, thereby driving it to rotate.

[0038] A hard sponge 652 is arranged above the arc-shaped piece 651. The fixing rod 65 slides in the slide groove and fits against the inner wall of the tank body. Friction is generated between the hard sponge 652 and the tank body to fix the entire device. The hard sponge 652 can clean the surface of the inner wall of the tank body and prevent damage to the entire device caused by hard contact, thereby avoiding reducing the overall welding quality of the device.

[0039] The above embodiments are only exemplary embodiments of the present invention and are not intended to limit the present invention. The protection scope of the present invention is defined by the claims. Those skilled in the art may make various modifications or equivalent substitutions to the present invention within the essence and protection scope of the present invention, and such modifications or equivalent substitutions shall also be deemed to fall within the protection scope of the present invention.

Claims

1. A welding device for a stainless steel liquid storage tank, used for welding the internal integral structure of the stainless steel liquid storage tank, comprising a rotating shaft (1), wherein an annular groove (11) is provided on the circumferential surface of the rotating shaft (1), and the annular groove (11) is in the shape of a circular ring, characterized in that: Support mechanisms (2) are provided at both ends of the rotating shaft (1), and the support mechanisms (2) are used to move inside the tank body. A fixing ring (3) is provided at one end of the annular groove (11) of the rotating shaft (1), and one end of the fixing ring (3) is fixedly fitted with one end of the annular groove (11). The fixing ring (3) is in an "8"-shaped structure. One end of the fixing ring (3) is coaxially mounted with the rotating shaft (1), and the other end of the fixing ring (3) is coaxially arranged with the telescopic member (4); A telescopic motor (5) is disposed at one end of the telescopic member (4), and an output end of the telescopic motor (5) is connected to a control gear (51); a sliding member (6) is connected to one side of the control gear (51), and a welding gun (7) is disposed below the sliding member (6); a driving motor (21) is disposed at the other end of the telescopic member (4), and the driving motor (21) is used to drive the support mechanism (2) to unfold; The telescopic member (4) drives the telescopic motor (5) to reciprocate, the telescopic motor (5) drives the control gear (51) to drive the sliding member (6) to reciprocate, and the control gear (51) drives the sliding member (6) to rotate in a circle around the rotating shaft (1), thereby achieving linear and annular welding of the inside of the tank body; The support mechanism (2) comprises a driving gear (22), a driven gear (23), a fixing plate (24) and a support rod (25); the driving gear (22) is arranged at the output shaft end of the driving motor (21), and the driving gear (22) is connected to the output end of the driving motor (21); the driven gear (23) is arranged below the driving gear (22), and the driven gear (23) meshes with the driving gear (22); the driven gear (23) is arranged on the fixing plate (24), and a driving groove (231) is provided in an annular shape on the driven gear (23); the fixing plate (24) is provided with a plurality of moving grooves (241); a support rod (25) is provided in the moving groove (241); a front end of the support rod (25) is provided with an arc-shaped support sheet (251); a rear end of the support rod (25) is provided with a limiting column (253), and the limiting column (253) is provided in the driving groove (231); The sliding member (6) comprises a long gear (61), a limit plate (62), a rotating gear (63), a support plate (64), a fixed rod (65) and a locking mechanism (66); the long gear (61) is arranged in the annular groove (11); a limit plate (62) is arranged on one side of the long gear (61); a rotating gear (63) is arranged on the other side of the long gear (61); a side of the rotating gear (63) away from the long gear (61) is connected to the support plate (64); the rotating gear (63) and the support plate (64) are coaxially arranged on the long gear (61); a sliding groove (641) is provided on the support plate (64); a fixed rod (65) is arranged in the sliding groove (641); one end of the fixed rod (65) is connected to an arc-shaped sheet (651); the other end of the fixed rod (65) is provided with a fixed column (653); the fixed column (653) matches with the rotating groove (631) on the rotating gear (63); An arc-shaped block (252) is arranged on the arc-shaped support sheet (251), the arc-shaped block (252) is arranged obliquely on the arc-shaped support sheet (251), and the length of the arc-shaped block (252) gradually decreases from large to small; The support mechanism (2) is arranged at both ends of the rotating shaft (1), and the inclination directions of the arc-shaped blocks (252) on the arc-shaped support sheet (251) are opposite.

2. A welding device for a stainless steel liquid storage tank according to claim 1, characterized in that: A triangular ring groove (67) is provided between the long gear (61) and the rotating gear (63). The triangular ring groove (67) is used to accommodate a locking mechanism (66). The telescopic member (4) drives the control gear (51) to reciprocate, and the meshing position of the control gear (51) is determined by the locking mechanism (66).

3. A welding device for a stainless steel liquid storage tank according to claim 1, characterized in that: The locking mechanism (66) comprises a buckle compartment (661), a spring (662) and a buckle (663); the buckle compartment (661) is arranged on one side of the control gear (51), and the buckle compartment (661) is in close contact with the control gear (51); the buckle compartment (661) is provided with a buckle (663), and the buckle (663) is connected to the buckle compartment (661) via the spring (662).

4. A welding device for a stainless steel liquid storage tank according to claim 3, characterized in that: The buckle (663) is a triangular structure, and the control gear (51) reciprocates to drive the buckle (663) to contact the triangular ring groove (67).

5. A welding device for a stainless steel liquid storage tank according to claim 1, characterized in that: A hard sponge (652) is arranged above the arc-shaped sheet (651), and the fixing rod (65) slides in the slide groove and fits against the inner wall of the tank body, and friction force is generated between the hard sponge (652) and the tank body to fix the entire device.

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