Circular tube flange welding machine

Abstract

A circular pipe flange welding machine comprises a circular pipe flange positioning and placing device and a circular pipe flange welding mechanism, a positioning and clamping mechanism arranged on the circular pipe flange positioning and placing device can automatically achieve accurate positioning and assembling of a circular pipe and a flange, manual spot welding fixing is not needed, and the assembling precision and efficiency are greatly improved; meanwhile, the technical requirements for operators are reduced, automatic welding between the round pipe and the flange is achieved through cooperation with a round pipe and flange welding mechanism, the welding quality and the production efficiency are further improved, automatic discharging of a weldment can be achieved through a discharging shifting plate after welding is completed, intervention of manual operation is reduced, and the production efficiency is improved. The overall welding process not only reduces the labor intensity of workers, but also effectively reduces the production cost, and ensures the efficiency and quality of welding operation.

Description

Technical Field

[0001] This utility model relates to the field of welding equipment technology, specifically a round pipe flange welding machine. Background Technology

[0002] In the welding of circular pipe components and flange components, the existing process generally involves manually positioning and assembling the flange into the designated position on the circular pipe, pre-fixing it with circumferential spot welding, and then transferring the spot-welded circular pipe flange assembly to the welding machine for complete welding connection of the flange and circular pipe around the perimeter. In this process, the assembly accuracy of the circular pipe and flange, as well as the strength of the spot weld fixation, largely depend on the operator's skill level. This not only consumes a large amount of labor but also requires a high level of technical expertise from the operators, increasing production costs to some extent and failing to guarantee the efficiency and quality of the welding operation. Summary of the Invention

[0003] The purpose of this utility model is to provide a round pipe flange welding machine, which replaces traditional manual spot welding with a round pipe flange positioning and placement mechanism, realizes precise positioning and assembly of round pipe components and flange components, and ensures the efficiency and quality of subsequent welding, thus solving the problems in the prior art.

[0004] The technical solution adopted by this utility model to solve its technical problem is as follows: a round pipe flange welding machine, including a frame, on which a round pipe flange positioning and placement device and a round pipe flange welding mechanism are installed. The round pipe flange positioning and placement mechanism includes a rotatable disc, and a plurality of positioning and clamping mechanisms are arranged circumferentially around the outer periphery of the disc. Each positioning and clamping mechanism includes a V-shaped block vertically fixed on the disc. A vertically retractable support frame is provided at the bottom of the V-shaped block. The round pipe is fitted onto the V-shaped block and the support frame, and the flange is located at the top of the V-shaped block. A rotatable claw plate is also hinged to the bottom of the disc on one side of the V-shaped block, and a tension spring is installed between the claw plate and the disc. The tension spring always tends to pull the claw plate to press the round tube tightly onto the V-block. The round tube flange welding mechanism includes a positioning pin that can be vertically raised and lowered. The positioning pin cooperates with the inner cavity at the top of the round tube. A welding torch is installed on the positioning pin. The positioning pin and the welding torch can rotate vertically relative to the round tube. A vertical rod is installed on one side of the disc. A material feeding plate is set on the vertical rod. After the round tube and flange are assembled onto the positioning clamping mechanism, they follow the disc to rotate to the bottom of the welding torch to achieve the welding connection between the round tube and the flange. After the welding connection is completed, when the round tube and flange follow the disc to the position of the material feeding plate, the material feeding plate can overcome the elastic force of the tension spring and push the round tube and flange away from the positioning clamping mechanism to achieve material feeding. The circular pipe flange welding mechanism includes a movable adjustment mechanism mounted on a frame. The movable adjustment mechanism includes a transverse sliding seat, a transverse sliding rail and a lead screw mounted on the frame. The end of the lead screw is provided with a handle. The transverse sliding seat is equipped with a transverse sliding block that cooperates with the transverse sliding rail, and a lead screw nut that cooperates with the lead screw. Rotating the handle allows the transverse sliding seat to move along the transverse sliding rail. A vertically movable seat that can be raised and lowered is also installed inside the transverse sliding seat. A positioning pin is installed inside the vertically movable seat. A vertically movable guide rod is provided inside the transverse sliding seat. A vertically movable guide sleeve that cooperates with the vertically movable guide rod is provided on the vertically movable seat. A lifting cylinder is installed at the upper end of the transverse sliding seat. The piston rod of the lifting cylinder is fixedly connected to the vertically movable seat. The extension and retraction of the piston rod of the lifting cylinder can drive the vertically movable seat to move vertically along the vertically movable guide rod. A rotary motor is installed inside the vertical moving base. A drive gear is mounted on the output shaft of the rotary motor. A positioning pin is installed inside the vertical moving base via a bearing housing. A wire feeder is installed at the end of the positioning pin extending upwards through the vertical moving base. The welding torch is mounted on the positioning pin at the lower end of the vertical moving base. A driven gear that meshes with the drive gear is installed on the outer circumference of the positioning pin located inside the vertical moving base. When the rotary motor starts, it drives the welding torch to rotate around the positioning pin. A first adjusting rod is mounted on the positioning pin via a clamp. A first locking sleeve is fitted on the first adjusting rod, and the first locking sleeve can move and lock along the length of the first adjusting rod. A second adjusting rod is mounted on the welding torch, and a second locking sleeve is fitted on the second adjusting rod, and the second locking sleeve can move and lock along the length of the second adjusting rod. The second locking sleeve is hinged to the first locking sleeve, and the position of the welding torch relative to the positioning pin can be adjusted through the first and second locking sleeves.A column is mounted on the frame, and a disc is mounted on top of the column via a slewing bearing. A rotary motor is mounted on the upper part of the column, and a rotary gear is mounted on the output shaft of the rotary motor. The rotary gear meshes with the outer ring of the slewing bearing. When the rotary motor is started, it drives the disc and its positioning and clamping mechanisms to rotate. Two sets of round pipe flange welding mechanisms are mounted on the frame, and the positioning and clamping mechanisms on the outer circumference of the disc are arranged corresponding to the two sets of round pipe flange welding mechanisms.

[0005] The positive effects of this utility model are as follows: The circular pipe flange welding machine of this utility model includes a circular pipe flange positioning and placement device and a circular pipe flange welding mechanism. The positioning and clamping mechanism set on the circular pipe flange positioning and placement device can automatically realize the precise positioning and assembly of the circular pipe and the flange, eliminating the need for manual spot welding and fixing, which greatly improves the assembly accuracy and efficiency, and also reduces the technical requirements for operators. In conjunction with the circular pipe flange welding mechanism, automated welding between the circular pipe and the flange is realized, further improving the welding quality and production efficiency. After welding is completed, the weldment can be automatically unloaded by the unloading plate, reducing manual intervention. The overall welding process not only reduces the labor intensity of workers, but also effectively reduces production costs, while ensuring the efficiency and quality of welding operations. Attached Figure Description

[0006] Figure 1 This is a schematic diagram of the structure of this utility model;

[0007] Figure 2 This is the front view of this utility model;

[0008] Figure 3 yes Figure 2 The left view;

[0009] Figure 4 yes Figure 2 Top view;

[0010] Figure 5 This is a schematic diagram of a positioning and clamping mechanism;

[0011] Figure 6 This is a structural schematic diagram of the circular pipe flange welding mechanism;

[0012] Figure 7 This is a schematic diagram of a welding torch mounted on a positioning pin via an adjusting rod.

[0013] Figure 8 yes Figure 4 An enlarged view of the sectional view along the AA direction. Detailed Implementation

[0014] The circular pipe flange welding machine described in this utility model, such as Figure 1-4As shown, it includes a frame 1, on which a round pipe flange positioning and placement device and a round pipe flange welding mechanism are installed. The round pipe flange positioning and placement device can realize the positioning and assembly of the round pipe workpiece and the flange workpiece, and transfer them to the welding mechanism to realize the welding connection between the round pipe workpiece and the flange workpiece.

[0015] The circular pipe flange positioning and placement mechanism includes a rotatable disc 2. Several positioning and clamping mechanisms are arranged circumferentially around the outer periphery of the disc 2. These mechanisms enable the positioning and clamping of the circular pipe workpiece and the flange workpiece, maintaining a stable assembly state as they are transferred to the welding mechanism for welding connection. Figure 5 As shown, each positioning and clamping mechanism includes a V-block 3 vertically fixed on the disc 2. The bottom of the V-block 3 is equipped with a vertically extendable support frame 4. The round tube is fitted onto the V-block 3 and the support frame 4, and the flange is located at the top of the V-block 3. A rotatable claw plate 5 is also hinged to the bottom of the disc 2 on one side of the V-block 3. A tension spring 6 is installed between the claw plate 5 and the disc 2, and the tension spring 6 always tends to pull the claw plate 5 to press the round tube firmly onto the V-block 3.

[0016] The groove on the V-block 3 mates with the outer circumference of the round tube workpiece. The bottom of the round tube workpiece rests on the support frame 4, and the jaw plate 5 presses the round tube workpiece firmly onto the V-block 3 for positioning. The flange workpiece is fitted onto the outer circumference of the round tube workpiece and rests on the top of the V-block 3 by its own weight, achieving positioning and assembly of the flange workpiece along the length of the round tube workpiece. By adjusting the length of the support frame 4 extending downwards from the V-block 3, it can accommodate round tube workpieces of different lengths or different heights of the flange workpiece. The V-block 3 can also be disassembled and replaced to accommodate round tube workpieces of different diameters while ensuring that the center position of the round tube workpiece remains unchanged. After the round tube workpiece and the flange workpiece are placed on the V-block 3, positioning and assembly are achieved. The clamping action of the jaw plate 5 maintains a stable assembly state. By rotating the disc 2, the assembled flange workpiece and round tube workpiece are moved to the lower part of the welding mechanism for welding connection.

[0017] The circular tube flange welding mechanism includes a vertically movable positioning pin 7, which engages with the inner cavity at the top of the circular tube. A welding torch 8 is mounted on the positioning pin 7. Both the positioning pin 7 and the welding torch 8 can rotate vertically relative to the circular tube. The positioning pin 7 enables the welding torch 8 to assist in positioning the workpiece. After the positioning pin 7 extends into the center position inside the circular tube workpiece, it drives the welding torch 8 to rotate circumferentially, thereby achieving a circumferential welding connection between the circular tube workpiece and the flange workpiece.

[0018] A vertical rod 9 is installed on one side of the disc 2, and a feeding plate 10 is set on the vertical rod 9. The opening direction of the feeding plate 10 is consistent with the opening direction of the claw plate 5. After the round tube and flange are assembled onto the positioning and clamping mechanism, they rotate with the disc 2 to the bottom of the welding gun 8 to realize the welding connection between the round tube and the flange. After the welding connection is completed, when the round tube and flange rotate with the disc 2 to the position of the feeding plate 10, the feeding plate 10 can overcome the elastic force of the tension spring 6 to push the round tube and flange away from the positioning and clamping mechanism to realize the material dropping.

[0019] A partition curtain can be installed on the upper side of the disc 2 to separate the welding mechanism from the area where the workers place the workpieces. The workers install the round tube workpiece and the flange workpiece into the positioning and clamping mechanism outside the curtain. After the assembly is completed, the workpiece is moved to the lower position of the welding mechanism by the rotation of the disc 2. At this time, the disc 2 stops rotating, and the positioning pin 7 moves down into the round tube workpiece. The welding torch 8 rotates around the workpiece to perform welding connection. After the welding is completed, the disc 2 continues to rotate, and the workpiece pressed by the claw plate 5 on the V-block 3 comes into contact with the unloading plate 10. Overcoming the elastic force of the tension spring 6, the unloading plate 10 pushes the welded workpiece out from between the claw plate 5 and the V-block 3. A material frame can be placed at the bottom of the unloading plate 10 to collect the welded workpiece.

[0020] The above operation replaces the traditional manual spot welding pre-fixation of workpieces. The operator only needs to pull the claw plate 5 into the V-block 3 to install the round pipe workpiece and flange workpiece. The operation difficulty is reduced, no high operation skills are required for the operator, and the overall labor intensity is significantly reduced. It also effectively improves the assembly and welding efficiency and quality of workpieces.

[0021] Furthermore, to facilitate the welding mechanism in finding the welding center of the workpiece and to enable fine-tuning of the welding mechanism in the left-right and up-down directions, the circular pipe flange welding mechanism includes a movable adjustment mechanism mounted on the frame 1, such as... Figure 6 As shown, the moving adjustment mechanism includes a transverse sliding seat 11, a transverse sliding rail 12 and a lead screw 13 mounted on the frame 1, a handle 14 at the end of the lead screw 13, a transverse sliding block 15 that cooperates with the transverse sliding rail 12 and a lead screw nut 16 that cooperates with the lead screw 13 mounted on the transverse sliding seat 11, and the transverse sliding seat 11 can be moved along the transverse sliding rail 12 by rotating the handle 14.

[0022] A vertically movable seat 17 capable of vertical lifting is also installed inside the horizontal movable seat 11. The positioning pin 7 is installed inside the vertically movable seat 17. A vertically movable guide rod 18 is provided inside the horizontal movable seat 11. A vertically movable guide sleeve 19 that cooperates with the vertically movable guide rod 18 is provided on the vertically movable seat 17. A lifting cylinder 20 is installed at the upper end of the horizontal movable seat 11. The piston rod of the lifting cylinder 20 is fixedly connected to the vertically movable seat 17. The extension and retraction of the piston rod of the lifting cylinder 20 can drive the vertically movable seat 17 to move vertically along the vertically movable guide rod 18.

[0023] The movable adjustment mechanism allows the welding torch 8 to be flexibly adjusted horizontally and vertically to adapt to the welding requirements of round pipe flange assemblies of different specifications and sizes, enhancing the versatility and flexibility of the equipment. At the same time, the movable adjustment mechanism is easy to operate; precise position adjustment can be achieved simply by turning the handle 14 and controlling the extension and retraction of the piston rod of the lifting cylinder 20, thus improving work efficiency.

[0024] Furthermore, to enable the welding torch 8 to rotate around the positioning pin 7, a rotary motor 21 is installed inside the vertical shift seat 17. A drive gear 22 is mounted on the output shaft of the rotary motor 21. The positioning pin 7 is installed inside the vertical shift seat 17 via a bearing housing. A wire feeder 23 is installed at the end of the positioning pin 7 that extends upward through the vertical shift seat 17. The welding torch 8 is mounted on the positioning pin 7 at the lower end of the vertical shift seat 17. A driven gear 24, meshing with the drive gear 22, is installed on the outer circumference of the positioning pin 7 located inside the vertical shift seat 17. When the rotary motor 21 is started, it drives the welding torch 8 to rotate around the positioning pin 7.

[0025] The above-mentioned structure can drive the welding torch 8 to rotate around the positioning pin 7 to achieve circumferential welding, ensuring the uniformity and integrity of the welding. This design not only improves the welding quality, but also reduces the complexity of manual operation, making the welding process more automated and intelligent.

[0026] To enable multi-directional fine-tuning of the welding torch 8 relative to the positioning pin 7, and to facilitate adaptive adjustments to different types of welding workpieces at various angles and positions, such as... Figure 7 As shown, a first adjusting rod 25 is mounted on the positioning pin 7 via a clamp, and a first locking sleeve 26 is fitted onto the first adjusting rod 25. The first locking sleeve 26 can move and lock along the length direction of the first adjusting rod 25. A second adjusting rod 27 is mounted on the welding torch 8, and a second locking sleeve 28 is fitted onto the second adjusting rod 27. The second locking sleeve 28 can move and lock along the length direction of the second adjusting rod 27.

[0027] The second locking sleeve 28 is hinged to the first locking sleeve 26. The position of the welding torch 8 relative to the positioning pin 7 can be adjusted in various angles and directions via the first locking sleeve 26 and the second locking sleeve 28. This flexible design allows the equipment to adapt to round pipes and flanges of different sizes, further expanding its application range. At the same time, the adjustment process is simple and quick, improving the equipment's flexibility and practicality.

[0028] Furthermore, in order to achieve the rotational drive of disk 2, such as Figure 8As shown, a column 29 is installed on the frame 1, and a disc 2 is installed on the top of the column 29 via a slewing bearing 30. A rotary motor 31 is installed on the upper part of the column 29, and a rotary gear 32 is provided on the output shaft of the rotary motor 31. The rotary gear 32 meshes with the outer ring of the slewing bearing 30. When the rotary motor 31 is started, it can drive the disc 2 and its positioning and clamping mechanism to rotate.

[0029] Through the cooperation of the slewing bearing 30 and the slewing motor 31, the smooth rotation of the disc 2 and its positioning and clamping mechanism is achieved, so that the round pipe and flange can pass through the assembly position, welding position and unloading position in sequence, realizing the automated production process. This design not only improves production efficiency, but also reduces the intervention of manual operation, making the production process more stable and reliable.

[0030] Furthermore, two sets of round pipe flange welding mechanisms are installed on the frame 1, and the positioning and clamping mechanisms set on the outer periphery of the disc 2 are respectively arranged corresponding to the two sets of round pipe flange welding mechanisms. This allows for simultaneous welding of two sets of round pipe flange assemblies, further improving the equipment's production capacity and efficiency. The above design can be increased to three or more sets of equipment, suitable for large-scale, batch production scenarios, significantly shortening the production cycle and reducing production costs.

[0031] The technical solution of this utility model is not limited to the scope of the embodiments described herein. All technical contents not described in detail herein are publicly known technologies.

Claims

1. A circular pipe flange welding machine, characterized in that: The device includes a frame (1), on which a round pipe flange positioning and placement device and a round pipe flange welding mechanism are installed. The round pipe flange positioning and placement mechanism includes a rotatable disc (2). Several positioning clamping mechanisms are arranged circumferentially around the outer periphery of the disc (2). Each positioning clamping mechanism includes a V-shaped block (3) vertically fixed on the disc (2). A support frame (4) that can extend and retract vertically is provided at the bottom of the V-shaped block (3). The round pipe is fitted on the V-shaped block (3) and the support frame (4). The flange is located at the top of the V-shaped block (3). A rotatable claw plate (5) is also hinged to the bottom of the disc (2) on one side of the V-shaped block (3). A tension spring (6) is installed between the claw plate (5) and the disc (2). The tension spring (6) always pulls the claw plate (5) to press the round pipe. The tendency to be tightly attached to the V-block (3) is that the round pipe flange welding mechanism includes a positioning pin (7) that can be vertically raised and lowered. The positioning pin (7) is engaged with the inner cavity of the top of the round pipe. A welding gun (8) is installed on the positioning pin (7). The positioning pin (7) and the welding gun (8) can rotate vertically relative to the round pipe. A vertical rod (9) is installed on one side of the disc (2). A material feeding plate (10) is set on the vertical rod (9). After the round pipe and flange are assembled onto the positioning clamping mechanism, they follow the disc (2) to rotate to the bottom of the welding gun (8) to realize the welding connection between the round pipe and the flange. After the welding connection is completed, the round pipe and flange follow the disc (2) to rotate to the position of the material feeding plate (10). The material feeding plate (10) can overcome the elastic force of the tension spring (6) to push the round pipe and flange away from the positioning clamping mechanism to realize the material feeding.

2. The circular pipe flange welding machine according to claim 1, characterized in that: The circular pipe flange welding mechanism includes a moving adjustment mechanism mounted on a frame (1). The moving adjustment mechanism includes a transverse sliding seat (11), a transverse sliding rail (12) and a lead screw (13) mounted on the frame (1). The end of the lead screw (13) is provided with a handle (14). A transverse sliding block (15) that cooperates with the transverse sliding rail (12) and a lead screw nut (16) that cooperates with the lead screw (13) are mounted on the transverse sliding seat (11). Turning the handle (14) allows the transverse sliding seat (11) to move along the transverse sliding rail (12). The seat (11) is also equipped with a vertically movable seat (17) that can be raised and lowered vertically. The positioning pin (7) is installed in the vertically movable seat (17). A vertically movable guide rod (18) is provided in the horizontally movable seat (11). A vertically movable guide sleeve (19) that cooperates with the vertically movable guide rod (18) is provided on the vertically movable seat (17). A lifting cylinder (20) is installed at the upper end of the horizontally movable seat (11). The piston rod of the lifting cylinder (20) is fixedly connected to the vertically movable seat (17). The extension and retraction of the piston rod of the lifting cylinder (20) can drive the vertically movable seat (17) to move vertically along the vertically movable guide rod (18).

3. The circular pipe flange welding machine according to claim 2, characterized in that: A rotary motor (21) is installed inside the vertical shift seat (17). A drive gear (22) is provided on the output shaft of the rotary motor (21). A positioning pin (7) is installed inside the vertical shift seat (17) through a bearing seat. A wire feeder (23) is installed at the end of the positioning pin (7) that extends upward through the vertical shift seat (17). The welding torch (8) is installed on the positioning pin (7) at the lower end of the vertical shift seat (17). A driven gear (24) that meshes with the drive gear (22) is installed on the outer periphery of the positioning pin (7) located inside the vertical shift seat (17). When the rotary motor (21) is started, it can drive the welding torch (8) to rotate around the positioning pin (7) as the center.

4. A circular pipe flange welding machine according to claim 1, characterized in that: A first adjusting rod (25) is mounted on the positioning pin (7) via a clamp. A first locking sleeve (26) is mounted on the first adjusting rod (25). The first locking sleeve (26) can move and lock along the length direction of the first adjusting rod (25). A second adjusting rod (27) is mounted on the welding torch (8). A second locking sleeve (28) is mounted on the second adjusting rod (27). The second locking sleeve (28) can move and lock along the length direction of the second adjusting rod (27). The second locking sleeve (28) is hinged to the first locking sleeve (26). The position of the welding torch (8) relative to the positioning pin (7) can be adjusted by the first locking sleeve (26) and the second locking sleeve (28).

5. A circular pipe flange welding machine according to claim 1, characterized in that: A column (29) is installed on the frame (1). The disc (2) is installed on the top of the column (29) via a slewing bearing (30). A rotary motor (31) is installed on the upper part of the column (29). A rotary gear (32) is provided on the output shaft of the rotary motor (31). The rotary gear (32) meshes with the outer ring of the slewing bearing (30). When the rotary motor (31) is started, it can drive the disc (2) and its positioning and clamping mechanism to rotate.

6. A circular pipe flange welding machine according to claim 1, characterized in that: Two sets of round pipe flange welding mechanisms are installed on the frame (1), and the positioning and clamping mechanisms set on the outer periphery of the disc (2) are respectively arranged in correspondence with the two sets of round pipe flange welding mechanisms.

Images