A pipe welding device

Abstract

The application discloses a pipeline welding device, which comprises a driving part, a transmission part, a welding needle, a clamping part and a water cooling system. The coolant of the water cooling system can flow through the cathode plate of the pipeline welding device to cool the cathode plate. The water cooling system comprises an inlet pipe, an outlet pipe and a coolant channel arranged in the cathode plate. The coolant channel is connected with the inlet pipe and the outlet pipe. The welding needle is adjustably arranged on a mounting seat. The driving part can drive the mounting seat and the welding needle to make circumferential movement around the pipe to be welded for welding operation. The technical problem of low welding efficiency of the existing pipeline welding device is solved.

Description

Technical Field

[0001] This invention belongs to the field of pipeline welding technology, and more specifically, relates to a pipeline welding device. Background Technology

[0002] Heat exchanger equipment such as radiators and condensers contain a large number of dense pipes. During the production process, welding is a bottleneck problem that affects the overall production capacity.

[0003] Existing pipe welding equipment typically does not allow the welding needle to oscillate while moving circumferentially around the outside of the pipe to be welded. When the customer requires a large weld leg height, multiple layers and multiple passes are needed, resulting in a long welding time. In addition, as the pipe welding equipment operates for a long time, a large amount of heat is generated on the cathode plate. The pipe welding equipment needs to be cooled down after a period of continuous operation before welding can continue, resulting in low welding efficiency. Summary of the Invention

[0004] To address the technical problem of low welding efficiency in existing pipe welding devices, the present invention aims to provide a pipe welding device, comprising a drive unit, a transmission unit, a welding needle, a clamping unit, and a water cooling system. The clamping unit is used to clamp and fix the pipe fitting to be welded. The welding needle is angle-adjustably mounted on a mounting base. The drive unit can drive the mounting base and the welding needle to perform circumferential movement around the pipe fitting via the transmission unit for welding operations. The coolant in the water cooling system flows through the cathode plate of the pipe welding device to cool the cathode plate. The water cooling system includes an inlet pipe, an outlet pipe, and a coolant channel disposed within the cathode plate. The coolant channel connects the inlet pipe and the outlet pipe.

[0005] Furthermore, the coolant channel is located in the lower half of the cathode plate, and the coolant channel is U-shaped.

[0006] Furthermore, the drive unit is arranged parallel to the axis of the pipe welding device.

[0007] Furthermore, the transmission unit includes a plurality of meshing transmission gears, and the drive unit transmits driving force to the mounting base through the plurality of meshing transmission gears.

[0008] Furthermore, the clamping part includes: a clamping body, which has a first top ball air chamber and a second top ball air chamber inside, and has a corresponding first air inlet and a second air inlet; a cylinder top ball one is movably disposed in the first top ball air chamber, and a cylinder top ball two is movably disposed in the second top ball air chamber.

[0009] The clamping part further includes an air inlet pipe one and an air inlet pipe two. The air inlet pipe one is connected to the first top ball air chamber through the first air inlet hole; the air inlet pipe two is connected to the first top ball air chamber through the second air inlet hole; the driving gas can drive the cylinder top ball one to extend out of the first top ball air chamber through the air inlet pipe one; the driving gas can drive the cylinder top ball two to extend out of the second top ball air chamber through the air inlet pipe two.

[0010] Furthermore, the clamping part also includes: a diversion module, through which the main air intake pipe connects the first air intake pipe and the second air intake pipe; wherein, the electronic control module is electrically connected to the diversion module to realize the synchronous on / off of the first air intake pipe and the second air intake pipe.

[0011] Furthermore, the pipe welding device also includes a protective gas inlet pipe, which connects to the welding area of ​​the pipe welding device and is used to supply protective gas to the welding area.

[0012] Furthermore, the clamping part is provided with a clamping opening on one side, and the pipe welding device also includes a protective door, which is movably disposed on the outside of the clamping part, for closing the clamping opening when the pipe welding device is performing welding operations, so as to prevent the loss of protective gas during the welding process.

[0013] Furthermore, the protective door is a hinged door, which is rotatably disposed on the outside of the clamping part via a hinge shaft; wherein, the clamping part is provided with an arc-shaped guide groove, and the hinged door is provided with a corresponding guide slider, which can slide along the arc-shaped guide groove.

[0014] Furthermore, the protective door includes two hinged doors, with a sealing assembly between the two hinged doors.

[0015] Furthermore, the sealing component is a magnetic element.

[0016] The technical effects and advantages of this invention are as follows:

[0017] 1. When the drive unit drives the mounting base and welding needle to perform circumferential motion around the pipe to be welded through the transmission unit to perform welding operations, the welding needle and the swing block can swing left and right relative to the mounting base to form a relatively wide weld seam, which can meet the customer requirements of large weld leg height without the need for multi-layer and multi-pass welding.

[0018] 2. When the coolant of the water-cooling system flows through the cathode plate of the pipeline welding device, it can directly cool the cathode plate. Compared with the heat exchange between the coolant pipeline and the cathode plate surface, the direct flow of the coolant from the water-cooling system through the cathode plate improves the cooling effect on the cathode plate, avoids overheating of the cathode plate, and thus increases the duty cycle, thereby improving both welding efficiency and welding quality.

[0019] 3. Compared to setting up separate electronic control modules for each of the intake pipes, controlling their on / off states individually, this method utilizes a single flow divider module to connect the main intake pipe to both intake pipes. This simplifies the driving gas piping structure, resulting in a simpler design and lower cost. Furthermore, it allows for synchronized on / off operation of intake pipes, avoiding the time-asynchronous issues between their on / off states. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the structure of a pipe welding device provided by the present invention;

[0021] Figure 2 yes Figure 1 Enlarged view of point A in the middle;

[0022] Figure 3 This is a schematic diagram of the water cooling system;

[0023] Figure 4 yes Figure 3 Cross-sectional view of the water-cooled system;

[0024] Figure 5 This is a schematic diagram of the air intake of the clamping part;

[0025] Figure 6 This is a schematic diagram of the air intake pipe inside the clamping part;

[0026] Figure 7 This is a schematic diagram of the clamping part;

[0027] Figure 8 This is a schematic diagram of the clamping part from another perspective;

[0028] Figure 9 This is a schematic diagram showing the connection between the welding pin and the mounting base;

[0029] Figure 10 This is a schematic diagram of the internal transmission of the transmission unit.

[0030] In the picture:

[0031] 10. Drive unit; 20. Transmission unit; 31. Welding needle; 32. Swing block; 33. Mounting base; 40. Clamping unit; 41. Clamping body; 411. Inlet pipe one; 412. Inlet pipe two; 413. Protective gas inlet pipe; 421. Cylinder top ball one; 422. Cylinder top ball two; 431. First air inlet; 432. Second air inlet; 50. Water cooling system; 51. Liquid inlet pipe; 52. Liquid outlet pipe; 53. Coolant channel; 60. Cathode plate; 70. Protective door; 71. Hinged door; 72. Hinge shaft; 73. Guide slider; 74. Arc-shaped guide groove. Detailed Implementation

[0032] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments. The embodiments of the present invention are given for illustrative and descriptive purposes only, and are not intended to be exhaustive or to limit the invention to the forms disclosed. Many modifications and variations will be apparent to those skilled in the art. The embodiments were chosen and described to better illustrate the principles and practical application of the invention, and to enable those skilled in the art to understand the invention and design various embodiments with various modifications suitable for a particular purpose.

[0033] See Figure 1 This is a structural schematic diagram of a pipe welding device provided by the present invention. Combined with... Figures 1 to 10 The pipe welding device includes, for example, a drive unit 10, a transmission unit 20, a welding needle 31, a clamping unit 40, and a water cooling system 50. The clamping unit 40 is used to clamp and fix the pipe to be welded; the welding needle 31 is angle-adjustably mounted on the mounting base 33; the drive unit 10 can drive the mounting base 33 and the welding needle 31 to perform circumferential motion around the pipe to be welded for welding operations via the transmission unit 20; the coolant of the water cooling system 50 can flow through the cathode plate 60 of the pipe welding device to cool the cathode plate 60.

[0034] For example, the welding needle 31 is set on the mounting base 33 at an adjustable angle via the swing block 32. When the drive unit 10 drives the mounting base 33 and the welding needle 31 to perform circumferential motion around the pipe to be welded via the transmission unit 20, the welding needle 31 and the swing block 32 can swing left and right relative to the mounting base 33 to form a relatively wide weld seam, which can meet the customer's requirement of a large weld leg height without multiple layers and multiple passes of welding.

[0035] It is understandable that when the coolant of the water cooling system 50 flows through the cathode plate 60 of the pipe welding device, it can directly cool the cathode plate 60. Compared with the heat exchange between the coolant pipeline and the cathode plate 60 surface, directly setting the coolant of the water cooling system 50 to flow through the cathode plate 60 of the pipe welding device can improve the cooling effect of the cathode plate 60, avoid overheating of the cathode plate 60, thereby increasing the duty cycle, and thus improving welding efficiency and welding quality.

[0036] Furthermore, the water cooling system 50 includes: an inlet pipe 51, an outlet pipe 52, and a coolant channel 53 disposed within the cathode plate 60; wherein the coolant channel 53 connects the inlet pipe 51 and the outlet pipe 52. For example, the coolant channel 53 is located in the lower half of the cathode plate 60, and the coolant channel 53 is U-shaped. In a specific embodiment, the coolant enters from the inlet pipe 51, flows through the coolant channel 53 to directly cool the cathode plate 60, and then flows out from the outlet pipe 52.

[0037] Furthermore, the clamping part 40 includes: a clamping body 41, which has a first top ball air chamber and a second top ball air chamber inside, and has a corresponding first air inlet 431 and a second air inlet 432; a cylinder top ball 421 is movably disposed in the first top ball air chamber, and a cylinder top ball 422 is movably disposed in the second top ball air chamber; wherein, the clamping part 40 also includes an air inlet pipe 411 and an air inlet pipe 412, the air inlet pipe 411 being connected to the first top ball air chamber through the first air inlet 431; the air inlet pipe 412 being connected to the first top ball air chamber through the second air inlet 432; driving gas can drive the cylinder top ball 421 to extend out of the first top ball air chamber through the air inlet pipe 411; driving gas can drive the cylinder top ball 422 to extend out of the second top ball air chamber through the air inlet pipe 412.

[0038] Furthermore, the clamping part 40 also includes a diversion module, through which the main air intake pipe connects the first air intake pipe 411 and the second air intake pipe 412; wherein, the electronic control module is electrically connected to the diversion module to achieve synchronous on / off of the first air intake pipe 411 and the second air intake pipe 412. For example, the electronic control module may be a solenoid valve.

[0039] Understandably, compared to setting up separate electrical control modules for each of the first and second air intake pipes 411 and 412 to control their on / off states, using a single flow divider module to connect the main air intake pipe to both pipes 411 and 412 only requires one electrical control module connected to the flow divider module. This simplifies the driving gas pipeline structure, resulting in a simpler design and lower cost. Furthermore, it allows for synchronous on / off of the first and second air intake pipes 411 and 412, avoiding the problem of asynchronous on / off states due to time differences. For example, the pipe welding device has two clamping parts 40, and the driving gas flow channels of the two clamping parts 40 are connected through a first air intake port 431 and a second air intake port 432.

[0040] Furthermore, the pipe welding apparatus also includes a protective gas inlet pipe 413, which connects to the welding area of ​​the pipe welding apparatus and is used to supply protective gas to the welding area. For example, the clamping body 41 is provided with a clamping opening, and multiple protective gas release holes are formed around the clamping opening on the inner side of the clamping body 41, allowing the protective gas to enter the welding area of ​​the pipe welding apparatus through the protective gas inlet pipe 413 and the multiple protective gas release holes. For example, the protective gas is argon.

[0041] Furthermore, the pipe welding device also includes a protective door 70, which is movably disposed on the outside of the clamping part 40, for closing the clamping opening when the pipe welding device is performing welding operations, so as to prevent the leakage of protective gas during the welding process.

[0042] Furthermore, the protective door 70 includes a hinge door 71, which is rotatably mounted on the outside of the clamping part 40 via a hinge shaft 72. The clamping part 40 has an arc-shaped guide groove 74, and the hinge door has a corresponding guide slider 73, which can slide along the arc-shaped guide groove 74. The guide slider 73 cooperates with the arc-shaped guide groove 74 to guide and limit the rotation distance and rotation angle of the hinge door 71.

[0043] Understandably, in existing pipe welding equipment, the welding area is generally directly exposed to the external environment during welding operations, leading to a significant loss of shielding gas, resulting in poor color and compromised quality of the finished product. By installing a protective door 70 on the outside of the clamping part 40, the loss of shielding gas can be effectively prevented during pipe welding operations, ensuring welding quality.

[0044] Furthermore, the protective door 70 includes two hinged doors 71, with a sealing assembly between the two hinged doors 71. For example, the sealing assembly can be a stepped surface, which increases the contact area between the two hinged doors 71 and improves the sealing effect between them.

[0045] Understandably, compared to setting only one protective door, setting a protective door 70 including two hinged doors 71 can shorten the opening and closing time of the protective door 70, thereby shortening the welding operation time and improving welding efficiency. By setting a sealing component between the two hinged doors 71, the sealing effect at the connection between the two hinged doors 71 can be improved, preventing the protective gas from escaping from the connection between the two hinged doors 71.

[0046] Preferably, the sealing component is a magnetic element. For example, both hinged doors 71 are equipped with magnetic elements, and when the protective door 70 is closed, the magnetic attraction of the magnetic elements can improve the sealing effect at the connection between the two hinged doors 71. For example, the magnetic element is a magnet.

[0047] Furthermore, the drive unit 10 is arranged parallel to the axis of the pipe welding device.

[0048] It is understandable that, compared to having the drive unit 10 collinear with the axis of the pipe welding device, by setting the drive unit 10 parallel to the axis of the pipe welding device, the drive unit 10 and the clamping unit 40 can be staggered to adapt to the operation requirements of narrow welding spaces and avoid the clamping unit 40 of the pipe welding device being unable to extend into the narrow welding space for operation due to the volume of the drive unit 10.

[0049] Furthermore, the transmission unit 20 includes multiple meshing transmission gears, and the drive unit transmits driving force to the mounting base 33 through these meshing transmission gears. For example, the transmission unit 20 includes a first transmission gear 21 and a second transmission gear 22, the mounting base 33 is an arc-shaped gear disk, the output end of the drive unit 10 drives and connects to the first transmission gear 21, the first transmission gear 21 meshes with the second transmission gear 22, and the second transmission gear 22 meshes with the mounting base 33. The output end of the drive unit 10 can drive the first transmission gear 21 to rotate, and the first transmission gear 21 can transmit driving force to the mounting base 33 through the second transmission gear 22, thereby enabling the welding needle 33 to perform circumferential motion around the pipe to be welded for welding operations.

[0050] For example, the transmission unit 20 includes six transmission gears 1 21 and four transmission gears 22. It can be understood that by providing multiple transmission gears 1 21, the offset distance between the drive unit 10 and the clamping unit 40 can be increased, enabling the pipe welding device to operate even in confined welding spaces.

[0051] In the description of this invention, it should be understood that the indicated orientation or positional relationship is based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing this invention and simplifying the description, and is not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this invention.

[0052] Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of them. All other embodiments obtained by those skilled in the art and related fields based on the embodiments of the present invention without inventive effort should fall within the scope of protection of the present invention. Structures, devices, and operating methods not specifically described and explained in the present invention, unless otherwise specified or limited, shall be implemented according to conventional means in the art.

Claims

1. A pipe welding apparatus, characterized in that, The pipe welding device includes: a drive unit (10), a transmission unit (20), a welding needle (31), a clamping unit (40), and a water cooling system (50); the clamping unit (40) is used to clamp and fix the pipe to be welded; wherein, the welding needle (31) is angle-adjustably mounted on the mounting base (33), and the drive unit (10) can drive the mounting base (33) and the welding needle (31) to perform circumferential motion around the pipe to be welded for welding operations through the transmission unit (20); the coolant of the water cooling system (50) can flow through the cathode plate (60) of the pipe welding device to cool the cathode plate (60); the water cooling system (50) includes: an inlet pipe (51), an outlet pipe (52), and a coolant channel (53) disposed in the cathode plate (60); wherein, the coolant channel (53) connects the inlet pipe (51) and the outlet pipe (52); The clamping part (40) includes: a clamping body (41) with a first top ball air chamber and a second top ball air chamber inside, and corresponding first air inlet (431) and second air inlet (432); a cylinder top ball one (421) is movably disposed in the first top ball air chamber, and a cylinder top ball two (422) is movably disposed in the second top ball air chamber; wherein, the clamping part (40) also includes an air inlet pipe one (411) and an air inlet pipe two (412), the air inlet pipe one (411) is connected to the first top ball air chamber through the first air inlet (431); the air inlet pipe two (412) is connected to the first top ball air chamber through the second air inlet (432); the driving gas can drive the cylinder top ball one (421) to extend out of the first top ball air chamber through the air inlet pipe one (411); the driving gas can drive the cylinder top ball two (422) to extend out of the second top ball air chamber through the air inlet pipe two (412).

2. The pipe welding apparatus according to claim 1, characterized in that, The coolant channel (53) is located in the lower half of the cathode plate (60), and the coolant channel (53) is U-shaped.

3. The pipe welding apparatus according to claim 1, characterized in that, The drive unit (10) is arranged parallel to the axis of the pipe welding device.

4. The pipe welding apparatus according to claim 3, characterized in that, The transmission unit (20) includes a plurality of meshing transmission gears, and the drive unit (10) transmits driving force to the mounting base (33) through the plurality of meshing transmission gears.

5. The pipe welding apparatus according to claim 1, characterized in that, The clamping part (40) further includes: a diversion module, through which the main air intake pipe connects the first air intake pipe (411) and the second air intake pipe (412); wherein, the electronic control module is electrically connected to the diversion module to realize the synchronous on and off of the first air intake pipe (411) and the second air intake pipe (412).

6. The pipe welding apparatus according to claim 1, characterized in that, The pipe welding device further includes a protective gas inlet pipe (413), which connects to the welding area of ​​the pipe welding device and is used to supply protective gas to the welding area.

7. The pipe welding apparatus according to claim 1, characterized in that, The clamping part (40) has a clamping opening on one side. The pipe welding device also includes a protective door (70), which is movably disposed on the outside of the clamping part (40) and is used to close the clamping opening when the pipe welding device is performing welding operations to prevent the loss of protective gas during the welding process.

8. The pipe welding apparatus according to claim 7, characterized in that, The protective door (70) includes a hinge door (71), which is rotatably disposed on the outside of the clamping part (40) via a hinge shaft (72); wherein, the clamping part (40) is provided with an arc-shaped guide groove (74), and the hinge door (71) is provided with a corresponding guide slider (73), which can slide along the arc-shaped guide groove (74).

9. The pipe welding apparatus according to claim 8, characterized in that, The protective door (70) includes two hinged doors (71), and a sealing assembly is provided between the two hinged doors (71).

10. The pipe welding apparatus according to claim 9, characterized in that, The sealing component is a magnetic element.

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