End flange welding device adaptive to straight pipes with different interface sizes

Abstract

The invention relates to an end flange welding device adaptive to straight pipes with different interface sizes. The end flange welding device comprises a straight pipe fixing assembly and a welding assembly, the straight pipe fixing assembly comprises a pair of long-strip-shaped fixing bases and two pairs of idler wheels. A plurality of placing grooves are formed in the pair of strip-shaped fixing seats at equal intervals in the length direction of the strip-shaped fixing seats; the welding assembly comprises a supporting seat and a pair of welding modules; the supporting base is arranged at the position close to the front ends of the pair of long-strip-shaped fixing bases. A pair of welding modules is symmetrically arranged in the supporting seat; a first driving device is further arranged on the supporting base, and the pair of welding modules are driven by the first driving device to be close to or away from each other in the horizontal direction. The moving direction of the pair of welding modules is perpendicular to the length direction of the pair of long-strip-shaped fixing bases. The welding module comprises a vertical mounting seat, a horizontal mounting seat and a second driving device; and a third driving device and a welding piece are arranged on the horizontal mounting seat. The straight pipe welding device is suitable for straight pipes with different section diameters and can be used for quickly and accurately welding the straight pipes.

Description

Technical Field

[0001] The invention relates to the technical field of flange processing, in particular to an end flange welding device adapted for straight pipes with different interface sizes. Background Art

[0002] After the flanges are installed at both ends of the straight pipe, they need to be welded. The main purpose of welding the flange to the straight pipe is to ensure the connection strength and sealing, which is suitable for high-pressure or high-temperature working conditions. Enhanced structural stability: The flange and the straight pipe are permanently connected by welding to form an integrated load-bearing structure that can withstand greater pressure and temperature changes. Improved sealing performance: The welded connection can eliminate the gap between the flange and the straight pipe, preventing media leakage, and is especially suitable for corrosive or toxic media. Adapt to complex working conditions: In high-pressure piping systems, welded connections can meet higher safety requirements and reduce the risk of leakage due to loose bolts.

[0003] Currently, when welding flanges to straight pipes, a fixture is required to secure the straight pipe and the flanges at both ends to facilitate welding. However, this fixture is only suitable for straight pipes with small cross-sectional diameter changes. When the cross-sectional diameter of the straight pipe changes significantly, the current fixture cannot effectively secure it, seriously affecting subsequent welding operations.

[0004] Therefore, it is desired to provide an end flange welding device that is adaptable to straight pipes of different interface sizes to solve the above technical problems. Summary of the Invention

[0005] The purpose of the present invention is to provide an end flange welding device adapted to straight pipes with different interface sizes, adapted to straight pipes with different cross-sectional diameters, and to perform welding operations on them quickly and accurately.

[0006] To achieve the above-mentioned purpose, the present invention provides an end flange welding device adapted to straight pipes with different interface sizes, comprising a straight pipe fixing assembly and a welding assembly;

[0007] The straight pipe fixing assembly includes a pair of long fixing seats and two pairs of rollers;

[0008] A pair of the long fixing seats are arranged parallel to each other;

[0009] A pair of the long fixed seats are provided with a plurality of placement grooves at equal intervals along the length direction thereof;

[0010] The plurality of placement slots on a pair of long fixed seats correspond to each other one by one;

[0011] In the two pairs of rollers, any pair of rollers is rotatably arranged at the front end of a pair of the long fixed seats and is connected to a drive motor. Under the drive of the drive motor, the pair of rollers rotates;

[0012] The other pair of rollers are supported in any pair of placement slots via connecting shafts at both ends thereof;

[0013] The welding assembly includes a support base and a pair of welding modules;

[0014] The support seat is arranged at a front end position close to a pair of long fixed seats;

[0015] A pair of welding modules are symmetrically arranged in the support base;

[0016] The support base is further provided with a first driving device, under the drive of the first driving device, the pair of welding modules move closer to or farther away from each other in the horizontal direction;

[0017] The moving direction of the pair of welding modules is perpendicular to the length direction of the pair of long fixing seats;

[0018] The welding module includes a vertical mounting seat, a horizontal mounting seat and a second driving device;

[0019] Two vertical mounting seats are arranged to move horizontally in the support seat;

[0020] The horizontal mounting seat is vertically slidably arranged on the vertical mounting seat and always remains horizontal;

[0021] The second driving device is used to drive the horizontal mounting seat to move on the vertical mounting seat;

[0022] The horizontal mounting seat is provided with a third driving device and a welding part;

[0023] The welding piece moves horizontally along the length direction of the horizontal mounting seat and vertically on the horizontal mounting seat;

[0024] The third driving device is used to drive the welding piece to move on the horizontal mounting seat.

[0025] Specifically, the first driving device includes a first screw and a first motor;

[0026] The first screw is horizontally and rotatably arranged in the support seat, and the external threads of the first screw are rotated in opposite directions from the middle position to the two ends thereof;

[0027] A pair of welding modules are symmetrical and threadedly sleeved on the first lead screw;

[0028] The first motor is used to drive the first lead screw to rotate.

[0029] Specifically, the second driving device includes a second lead screw and a second motor;

[0030] The second lead screw is vertically and slidably arranged on a vertical mounting seat;

[0031] The second motor is used to drive the second lead screw to rotate;

[0032] The horizontal mounting seat is threadedly sleeved on the second lead screw.

[0033] Specifically, the third driving device includes a third lead screw and a third motor;

[0034] The third lead screw is arranged to rotate horizontally along the length direction of the horizontal mounting seat;

[0035] The third motor is used to drive the third lead screw to rotate;

[0036] The welding piece is threadedly sleeved on the third lead screw.

[0037] Furthermore, the welding part includes a base, a support plate and a welding gun; the base is threadedly sleeved on the third screw;

[0038] A first gear is provided at the middle position of the front end side surface of the base;

[0039] The back side of the support plate is fixedly connected to the first gear;

[0040] A second gear is also provided on the front side of the base, and the second gear is meshed with the first gear;

[0041] The second gear is fixedly connected to a rotating shaft, the rotating shaft passes through the rear end side of the base, and the end of the rotating shaft is provided with a first handle;

[0042] The welding gun is arranged on a supporting plate.

[0043] Furthermore, a plurality of third gears are provided on the front end side surface of the base around the first gear, and the third gears are meshed with the first gear.

[0044] Furthermore, a mounting shell is fixed on the support plate outwardly and downwardly, and a fourth lead screw is rotatably arranged in the mounting shell along its length direction;

[0045] The fourth lead screw is sleeved with a welding gun mounting seat;

[0046] A second handle is provided at one end of the fourth screw;

[0047] The welding gun is arranged on the fourth lead screw.

[0048] Furthermore, a groove is provided on the front side of the welding gun mounting seat;

[0049] A through hole is provided on the side surface of the lower end of the welding gun mounting seat, the through hole is parallel to the fourth lead screw and passes through the groove;

[0050] The welding gun is inserted into the through hole, and the head of the welding gun extends out of the through hole;

[0051] A square groove is provided on one side of the groove, the square groove passes through one side of the welding gun mounting seat, a push plate is slidably provided in the square groove, and the push plate extends into the groove;

[0052] A limiting plate is provided on one end of the push plate extending to the groove;

[0053] The rear end of the limit plate is connected to a spring, one end of which is connected to the groove;

[0054] The portion of the welding gun in the groove is clamped by a limiting plate.

[0055] Furthermore, slide rails are provided on both sides of the support seat, both sides of the vertical mounting seat, both sides of the horizontal mounting seat and both sides of the mounting shell;

[0056] The vertical mounting seat, the horizontal mounting seat, the base and the welding gun mounting seat are respectively slidably arranged on corresponding slide rails.

[0057] Compared with the prior art, the end flange welding device of the present invention, which is adapted to straight pipes with different interface sizes, has the following advantages:

[0058] (1) A pair of long fixed seats are provided with a plurality of placement grooves at equal intervals along their length direction; among the two pairs of rollers, any pair of rollers is rotatably arranged at the front end of a pair of long fixed seats and are both connected to a drive motor, and the above pair of rollers are rotated under the drive of the drive motor; the other pair of rollers are supported in any pair of placement grooves through the connecting shafts at both ends; when supporting a straight pipe, first move a pair of rollers to a suitable placement groove according to the cross-sectional diameter of the straight pipe, and then support the straight pipe between the two pairs of rollers through a lifting device; thereby adapting to straight pipes of different cross-sectional diameters and effectively welding the flanges at their ends;

[0059] (2) By setting the first lead screw, the second lead screw, the third lead screw, the fourth lead screw and the first gear and the second gear, the position of the welding gun can be adjusted in all directions so that the welding point can be accurately welded;

[0060] (3) The welding gun is easy to install and disassemble, and is convenient for maintenance. BRIEF DESCRIPTION OF THE DRAWINGS

[0061] Figure 1 This is a structural schematic diagram of an end flange welding device adapted to straight pipes with different interface sizes according to this embodiment;

[0062] Figure 2 Schematic diagram of the structure of the base in this embodiment;

[0063] Figure 3Schematic diagram of the structure of the welding part without a welding gun installed in this embodiment;

[0064] Figure 4 Schematic diagram of the structure of the welding part in this embodiment. DETAILED DESCRIPTION

[0065] The specific embodiments of the present invention are further described in detail below with reference to the accompanying drawings.

[0066] Example

[0067] like Figure 1 As shown, an end flange welding device of this embodiment is adapted to straight pipes with different interface sizes, including a straight pipe fixing assembly and a welding assembly.

[0068] The straight tube fixing assembly includes a pair of long strip fixing seats 1 and two pairs of rollers 2; the pair of long strip fixing seats 1 are arranged parallel to each other; a pair of long strip fixing seats 1 are provided with a plurality of placement grooves 3 at equal intervals along their length direction; the plurality of placement grooves 3 on the pair of long strip fixing seats 1 correspond one to one.

[0069] In the two pairs of rollers 2, any pair of rollers is rotatably arranged at the front end of a pair of long strip fixing seats 1, and both are connected to the driving motor 4. Under the drive of the driving motor 4, the above pair of rollers rotates.

[0070] The other pair of rollers is supported in any pair of placement slots 3 via connecting shafts at both ends thereof.

[0071] With such an arrangement, when supporting a straight pipe, firstly, a pair of rollers is moved to a suitable placement groove 3 according to the cross-sectional diameter of the straight pipe, and then the straight pipe is supported between the two pairs of rollers 2 by a hoisting device.

[0072] The welding assembly includes a support base 5 and a pair of welding modules. The support base 5 is positioned near the front end of the pair of long strip fixing bases 1. The pair of welding modules are symmetrically arranged within the support base 5. The support base 5 is also provided with a first drive device. Driven by the first drive device, the pair of welding modules move toward or away from each other in a horizontal direction. The movement direction of the pair of welding modules is perpendicular to the length direction of the pair of long strip fixing bases.

[0073] In this embodiment, the first driving device includes a first lead screw 6 and a first motor 7; the first lead screw 6 is horizontally and rotatably arranged in the support seat 5, and the external threads of the first lead screw 6 rotate in opposite directions from its middle position to its two ends; a pair of welding modules are symmetrical and threadedly sleeved on the first lead screw 6; the first motor 7 is used to drive the first lead screw 6 to rotate; with such an arrangement, under the drive of the first motor 7, the first lead screw 6 rotates, and the two welding modules move away from or approach each other on the first lead screw 6, adapting to straight pipes of different lengths, and effectively welding the flanges at both ends.

[0074] The welding module includes a vertical mounting seat 8, a horizontal mounting seat 9 and a second driving device; the two vertical mounting seats 8 are arranged to move horizontally in the support seat 5; the horizontal mounting seat 9 is vertically slidably set on the vertical mounting seat 8 and always remains horizontal; the second driving device is used to drive the horizontal mounting seat 9 to move on the vertical mounting seat 8.

[0075] In this embodiment, the second driving device includes a second screw 10 and a second motor 11; the second screw 10 is vertically and slidably arranged on the vertical mounting seat 8; the second motor 11 is used to drive the second screw 10 to rotate; the horizontal mounting seat 9 is threadedly sleeved on the second screw 10; in this arrangement, the second screw 10 is driven to rotate by the second motor 11, thereby realizing the vertical lifting of the horizontal mounting seat 9.

[0076] The horizontal mounting seat 9 is provided with a third driving device and a welding piece; the welding piece moves horizontally along the length direction of the horizontal mounting seat 9 and vertically on the horizontal mounting seat 9; the third driving device is used to drive the welding piece to move on the horizontal mounting seat 9.

[0077] In this embodiment, the third driving device includes a third screw 12 and a third motor 13; the third screw 12 is arranged to rotate horizontally along the length direction of the horizontal mounting seat 9; the third motor 13 is used to drive the third screw 12 to rotate; the welding part is threadedly sleeved on the third screw 12; in this arrangement, the third screw 12 is driven to rotate by the third motor 13, thereby realizing horizontal movement of the welding part.

[0078] Furthermore, in this embodiment, the welding member includes a base 14, a support plate 15 and a welding gun 16; the base 14 is threadedly sleeved on the third screw 12; Figure 2 and Figure 3As shown, a first gear 17 is provided in the middle position of the front end side surface of the base 14; the back side of the support plate 15 is fixedly connected to the first gear 17; a second gear 18 is also provided on the front end side surface of the base 14, and the second gear 18 is engaged with the first gear 17; a rotating shaft is fixedly connected to the second gear 17, and the rotating shaft passes through the rear end side surface of the base, and a first handle 19 is provided at the end of the rotating shaft; the welding gun 16 is provided on the support plate 15; with such a configuration, the second gear 18 is driven to rotate by the first handle 19, thereby realizing the rotation of the first gear 17, thereby realizing the rotation of the support plate 15, and the welding gun 16 on the support plate 15 can adjust the angle, so as to accurately and effectively weld the connection between the flange and the straight pipe.

[0079] In this embodiment, a plurality of third gears 20 are provided on the front side surface of the base 14 around the first gear 17, and the third gears 20 are engaged with the first gear 17; such a setting effectively prevents the first gear 17 from malfunctioning by increasing the load on the first gear 17.

[0080] Furthermore, a mounting shell 21 is fixed on the support plate 15 outwardly and tilted downward, and a fourth screw 22 is provided in the mounting shell 21 to rotate along its length direction; a welding gun mounting seat 23 is sleeved on the fourth screw 22; a second handle 24 is provided at one end of the fourth screw 22; the welding gun 16 is set on the fourth screw 22; with this arrangement, the position of the welding gun 16 can be manually fine-tuned to reach the most suitable position, further ensuring the quality and accuracy of subsequent welding.

[0081] Furthermore, in this embodiment, Figure 3 and Figure 4 As shown, a groove 25 is provided on the front end side surface of the welding gun mounting seat 23; a through hole 26 is provided on the lower end side surface of the welding gun mounting seat 23, and the through hole 26 is parallel to the fourth lead screw 22 and passes through the groove 25; the welding gun 16 is inserted into the through hole 26, and the head of the welding gun 16 extends out of the through hole 26; a square groove is provided on one side of the groove 25, and the square groove passes through one side surface of the welding gun mounting seat 23, and a push plate 27 is slidably provided in the square groove, and the push plate 27 extends all the way into the groove 25; ... A limit plate 28 is provided on one end of the plate 27 extending to the groove 25; the welding gun 16 is clamped by the limit plate 28 in the groove 25; the rear end of the limit plate 28 is connected to a spring 29, one end of the spring 29 is connected to the groove 25; with this arrangement, by pushing the push plate 27 inward, the limit plate 28 releases the welding gun 16, and the welding gun 16 can be taken out for maintenance. When the welding gun needs to be installed, it is inserted into the through hole 26, and the push plate 27 is released. Under the action of the spring 29, the limit plate clamps the welding gun.

[0082] In this embodiment, slide rails 30 are provided on both sides of the support seat 5, both sides of the vertical mounting seat 8, both sides of the horizontal mounting seat 9 and both sides of the mounting shell 21; the vertical mounting seat 8, the horizontal mounting seat 9, the base 14 and the welding gun mounting seat 23 are respectively slidably set on the corresponding slide rails 30; such a setting can ensure the linearity of the movement direction.

[0083] When welding flanges at both ends of a straight pipe, first select a suitable placement groove 3 according to the interface diameter of the straight pipe, and place a pair of rollers in the corresponding placement groove 3. Through the lifting equipment, the straight pipe is placed between the two pairs of rollers 2 and supported by the two pairs of rollers 2; drive the first motor 7 to move the two welding modules to the appropriate position on the first screw 6, and then drive the second motor 11, the horizontal mounting seat 9 moves vertically to the appropriate position on the second screw 11, and then drive the third screw 12 to move, so that the welding part moves to the appropriate position on the third screw 12, and the second gear 18 is driven to rotate by turning the first handle 19, thereby realizing the rotation of the first gear 17, thereby realizing the rotation of the support plate 15, and the welding gun 16 on the support plate 15 can be adjusted in angle to accurately and effectively weld the connection between the flange and the straight pipe. Finally, fine-tune the second handle 24, and the welding gun mounting seat 23 moves on the fourth screw 22. The position of the welding gun 16 is manually fine-tuned to reach the most appropriate position, further ensuring the quality and accuracy of subsequent welding.

[0084] The preferred embodiments of the present invention have been specifically described above, but the present invention is not limited to the described embodiments. Those skilled in the art may make various equivalent modifications or substitutions without departing from the spirit of the present invention. These equivalent modifications or substitutions are all included in the scope defined by the claims of this application.

Claims

1. An end flange welding device adapted to straight pipes with different interface sizes, characterized in that: Including straight pipe fixing components and welding components; The straight pipe fixing assembly includes a pair of long fixing seats and two pairs of rollers; A pair of the long fixing seats are arranged parallel to each other; A pair of the long fixed seats are provided with a plurality of placement grooves at equal intervals along the length direction thereof; The plurality of placement slots on a pair of long fixed seats correspond to each other one by one; In the two pairs of rollers, any pair of rollers is rotatably arranged at the front end of a pair of the long fixed seats and is connected to a drive motor. Under the drive of the drive motor, the pair of rollers rotates; The other pair of rollers are supported in any pair of placement slots via connecting shafts at both ends thereof; The welding assembly includes a support base and a pair of welding modules; The support seat is arranged at a front end position close to a pair of long fixed seats; A pair of welding modules are symmetrically arranged in the support base; The support base is further provided with a first driving device, under the drive of the first driving device, the pair of welding modules move closer to or farther away from each other in the horizontal direction; The moving direction of the pair of welding modules is perpendicular to the length direction of the pair of long fixing seats; The welding module includes a vertical mounting seat, a horizontal mounting seat and a second driving device; Two vertical mounting seats are arranged to move horizontally in the support seat; The horizontal mounting seat is vertically slidably arranged on the vertical mounting seat and always remains horizontal; The second driving device is used to drive the horizontal mounting seat to move on the vertical mounting seat; The horizontal mounting seat is provided with a third driving device and a welding part; The welding piece moves horizontally along the length direction of the horizontal mounting seat and vertically on the horizontal mounting seat; The third driving device is used to drive the welding piece to move on the horizontal mounting seat.

2. The end flange welding device adapted to straight pipes with different interface sizes according to claim 1, characterized in that: The first driving device includes a first screw and a first motor; The first screw is horizontally and rotatably arranged in the support seat, and the external threads of the first screw are rotated in opposite directions from the middle position to the two ends thereof; A pair of welding modules are symmetrical and threadedly sleeved on the first lead screw; The first motor is used to drive the first lead screw to rotate.

3. The end flange welding device adapted to straight pipes with different interface sizes according to claim 1, characterized in that: The second driving device includes a second lead screw and a second motor; The second lead screw is vertically and slidably arranged on a vertical mounting seat; The second motor is used to drive the second lead screw to rotate; The horizontal mounting seat is threadedly sleeved on the second lead screw.

4. The end flange welding device adapted to straight pipes with different interface sizes according to claim 1, characterized in that: The third driving device includes a third lead screw and a third motor; The third lead screw is arranged to rotate horizontally along the length direction of the horizontal mounting seat; The third motor is used to drive the third lead screw to rotate; The welding piece is threadedly sleeved on the third lead screw.

5. The end flange welding device adapted to straight pipes with different interface sizes as claimed in claim 4, characterized in that: The welding part includes a base, a support plate and a welding gun; the base is threadedly sleeved on the third screw; A first gear is provided at the middle position of the front end side surface of the base; The back side of the support plate is fixedly connected to the first gear; A second gear is also provided on the front side of the base, and the second gear is meshed with the first gear; The second gear is fixedly connected to a rotating shaft, the rotating shaft passes through the rear end side of the base, and the end of the rotating shaft is provided with a first handle; The welding gun is arranged on a supporting plate.

6. The end flange welding device adapted to straight pipes with different interface sizes as claimed in claim 5, characterized in that: A plurality of third gears are further provided on the front end side surface of the base around the first gear, and the third gears are meshed with the first gear.

7. The end flange welding device adapted to straight pipes with different interface sizes as claimed in claim 6, characterized in that: A mounting shell is fixed on the support plate outwardly and downwardly, and a fourth lead screw is provided in the mounting shell for rotation along its length direction; The fourth lead screw is sleeved with a welding gun mounting seat; A second handle is provided at one end of the fourth screw; The welding gun is arranged on the fourth lead screw.

8. The end flange welding device adapted to straight pipes with different interface sizes as claimed in claim 7, characterized in that: A groove is provided on the front side of the welding gun mounting seat; A through hole is provided on the side surface of the lower end of the welding gun mounting seat, the through hole is parallel to the fourth lead screw and passes through the groove; The welding gun is inserted into the through hole, and the head of the welding gun extends out of the through hole; A square groove is provided on one side of the groove, the square groove passes through one side of the welding gun mounting seat, a push plate is slidably provided in the square groove, and the push plate extends into the groove; A limiting plate is provided on one end of the push plate extending to the groove; The rear end of the limit plate is connected to a spring, one end of which is connected to the groove; The portion of the welding gun in the groove is clamped by a limiting plate.

9. The end flange welding device adapted to straight pipes with different interface sizes as claimed in claim 8, characterized in that: Slide rails are provided on both sides of the support seat, both sides of the vertical mounting seat, both sides of the horizontal mounting seat and both sides of the mounting shell; The vertical mounting seat, the horizontal mounting seat, the base and the welding gun mounting seat are respectively slidably arranged on corresponding slide rails.

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