Specialized fitting intelligent welding device

Abstract

The present application relates to the technical field of welding equipment, and discloses a special accessory intelligent welding equipment, which comprises a welding gun head, a connecting piece and a holder, the connecting piece is detachably connected to the welding gun head, one end of the holder is connected to the connecting piece, a welding electrode channel is arranged in the connecting piece and the holder and is communicated, a gas feeding channel is arranged in the connecting piece, a gas outlet hole communicated with the gas feeding channel is arranged on the side of the connecting piece, a gas protection assembly is arranged in the gas outlet hole, and the gas protection assembly comprises a plugging head slidingly arranged in the gas outlet hole and a driving part driving the plugging head to slide. The plugging head is opened only when the welding gun head reaches or approaches the welding temperature, and the opening mode of the gas outlet hole is gradual opening, so that the waste phenomenon caused by gas overshoot is optimized.

Description

Technical Field

[0001] This invention relates to the field of welding equipment technology, and in particular to an intelligent welding equipment for special accessories. Background Technology

[0002] Welding is a method of using high heat to fuse and connect the surfaces of special parts together. Inert gases (such as helium, argon, etc.) are used as protective gases to protect the molten pool from oxidation during the welding process. However, during the welding process, phenomena such as delayed shut-off and overshoot occur after the welding gas interacts with the molten pool, resulting in the waste of welding gas in the process of protecting the molten pool. This is mainly because the control system of the welding equipment has a certain delay when the gas is momentarily overshot or shut off, resulting in the nozzle producing much higher gas than the standard during the welding process and being unable to shut off in time, thus causing a certain amount of gas waste and affecting the cost of the welding equipment. Experimental verification found that: (1) Overshoot phenomenon: each time it is turned on, the amount of inert gas that surges out exceeds 250%-500% of the required gas volume; (2) When the gas is collected, it takes a period of time to completely shut off; the gas wastes about 2.3L of inert gas volume in each switch-on overshoot, which is equivalent to the amount of gas wasted in the size of 6.5 bottles of Yibao mineral water. Summary of the Invention

[0003] In view of this, the purpose of this invention is to provide a special accessory intelligent welding equipment, which solves the problem of inert gas waste caused by overshooting and failure to close the gas collection in time during the welding process of existing nozzles.

[0004] The present invention solves the above-mentioned technical problems through the following technical means:

[0005] A special intelligent welding device for special accessories includes a welding torch head, a connector, and a bar holder. The connector is detachably connected to the welding torch head. One end of the bar holder is connected to the connector. A welding electrode channel is provided in the connector and the bar holder. A gas supply channel is provided in the connector. An outlet hole communicating with the gas supply channel is provided on the periphery of the connector. A gas protection component is provided in the outlet hole. The gas protection component includes a plug head slidably disposed in the outlet hole and a driving part for driving the plug head to slide.

[0006] Furthermore, the welding torch head includes a housing, a protective cover, and a connecting part. One end of the protective cover is open, and the other end is coaxially connected to the housing. The connecting part is coaxially disposed on the inner wall of the housing. An axially extending receiving groove is provided in the connecting part. One end of the connecting member is coaxially connected to the receiving groove. A first gas channel is reserved between the periphery of the connecting member and the inner wall of the connecting part. A mounting hole is provided at the end of the connecting part away from the connecting member. One end of the bar holding part passes through the mounting hole and is connected to the connecting member. A second gas supply channel is reserved between the inner wall of the mounting hole and the periphery of the bar holding part.

[0007] Furthermore, the connector includes a connector head that engages with the outside of the receiving groove and a retaining sleeve disposed within the receiving groove. The retaining sleeve and the connector are threaded together. The air supply channel extends from one end of the connector head into the retaining sleeve in a partially penetrating manner. The air supply channel is an annular channel. The welding rod channel is disposed within the connecting column surrounded by the air supply channel. The air supply channel penetrates the connector and the rod holding part.

[0008] Furthermore, a mounting ring is provided on the periphery of the connecting column corresponding to the air outlet, one end of the driving part is connected to the mounting ring and the other end is connected to the sealing head, and a pressure column is provided on the inner wall of the connecting part corresponding to the air outlet.

[0009] Furthermore, the outer diameter of the sealing head is matched with the air outlet, and an annular air outlet groove is provided along the depth direction on the side of the sealing head near the pressure column. The annular air outlet groove surrounds the support column, and an inflation chamber is provided inside the support column. A first inflation hole is provided on the periphery of the support column, which connects to the inflation chamber. An air delivery hole is provided at the bottom of the sealing head, which connects the air delivery channel to the inflation chamber.

[0010] Furthermore, a sealing cap is slidably provided at the top of the support column, a buffer spring is provided between the sealing cap and the support column, and a second air hole is provided on the periphery of the sealing cap. When the support column slides along the direction close to the sealing cap until the buffer spring no longer undergoes compression deformation, the first air hole and the second air hole coincide. When the support column does not slide, the first air hole and the second air hole are not connected.

[0011] Furthermore, the shape of the first inflation hole matches the configuration of the second inflation hole.

[0012] Furthermore, a sealing strip is provided on the inner wall of the air outlet.

[0013] Furthermore, the drive unit includes a sleeve and a sliding post, one end of which is connected to the sealing head, and the other end is slidably connected to the sleeve. The end of the sleeve away from the sliding post is connected to the mounting ring.

[0014] Furthermore, the sleeve is provided with an expansion cavity, which is a sealed cavity, and the inner wall of the sleeve is provided with a rubber strip. The sliding column always maintains an interference fit with the sleeve during the sliding process along the expansion cavity.

[0015] The beneficial effects of this invention are:

[0016] 1. In this application, the thermal expansion and contraction of gas is used as the driving source for the sealing head. This ensures that the sliding column and sealing head will only slide away from the sleeve when the temperature of the welding head reaches a relatively high temperature. Inert protective gas will only be released to protect the welding part when the first and second air inlets coincide. This optimizes the waste of inert gas when the equipment is first turned on and the welding power and gas inlet switches are turned on simultaneously, before the welding torch temperature reaches the welding temperature and welding begins. Furthermore, when the welding power is turned off and the welding torch temperature drops below the welding temperature, the gas in the expansion chamber can contract to the point that the first and second air inlets are no longer connected, thus optimizing the waste of inert gas.

[0017] 2. The first and second inflation ports provided in this application can optimize the gas overrush phenomenon. When the first and second inflation ports are initially connected, the channel through which gas can pass is small, and the gas cannot pass through the first and second inflation ports quickly. This optimizes the phenomenon of excessive protective gas outflow and waste caused by gas overrush when the gas valve is first opened. Attached Figure Description

[0018] Figure 1 This is a structural cross-sectional view of the intelligent welding equipment for special accessories of the present invention;

[0019] Figure 2 yes Figure 1 Enlarged diagram of part A in the middle;

[0020] Figure 3 This is a cross-sectional view of the protective component with inert gas protection according to the present invention;

[0021] Figure 4 This is an explosion schematic diagram of the protective component with inert gas protection of the present invention;

[0022] in,

[0023] 10. Welding torch head; 11. Outer shell; 12. Protective cover; 13. Connecting part; 14. Receiving groove; 15. First air supply channel; 16. Mounting hole; 17. Second air supply channel; 18. Pressure column; 20. Connecting piece; 21. Connecting head; 22. Clipper; 23. Connecting column; 30. Bar holding part; 40. Welding electrode channel; 50. Air supply channel; 60. Air outlet; 70. Protective component; 71. Sealing head; 72. Drive part; 721. Sleeve; 722. Sliding column; 723. Expansion chamber; 73. Mounting ring; 74. Air outlet groove; 75. Support column; 751. Inflation chamber; 752. First inflation hole; 753. Air supply hole; 76. Sealing cover; 761. Second inflation hole; 77. Buffer spring. Detailed Implementation

[0024] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0025] like Figure 1-4 As shown, the present invention provides a special accessory intelligent welding device, including a welding torch head 10, a connector 20, and a welding rod holder 30. The device also includes a neck, a switch, a gas cylinder, and a welding wire feeding device. The specific structure and connection relationships of the neck, switch, gas cylinder, and welding wire feeding device can be referenced in MIG welding (Metal Inert Gas Welding), and the relevant content is conventional in this field, so it will not be described in detail here. The welding torch head 10 is used to install components such as the connector 20 and the welding rod holder 30. The connector 20 is used to deliver the welding wire and inert gas into the welding torch head 10. The welding rod holder 30 is used to clamp the welding wire and ensure the wire's output direction. The connector 20 is detachably connected to the welding torch head 10, thus facilitating the maintenance and replacement of the welding torch head 10 or the connector 20. One end of the welding rod holder 30 is connected to the connector 20. A communicating welding rod channel 40 is provided within the connector 20 and the welding rod holder 30. The welding wire passes through the connector 20 and the holder 30 via the wire feeding device and exits from one end of the holder 30. The connector 20 has a gas supply channel 50, and its periphery has an outlet hole communicating with the gas supply channel 50. The connector is used to supply inert gas to the welding torch head 10 and then provide inert gas protection to the end of the holder 30. A gas protection assembly 70 is installed inside the outlet hole 60. The gas protection assembly 70 includes a plug head 71 slidably disposed within the outlet hole 60 and a drive part 72 that drives the plug head 71 to slide along the outlet hole 60. The gas protection assembly 70 controls the opening and closing of the outlet hole 60, optimizing gas overrush and preventing gas waste caused by gas escaping after closure.

[0026] The welding torch head 10 includes a housing 11, a protective cover 12, and a connecting portion 13. One end of the protective cover 12 is open, and the other end is coaxially connected to the housing 11. The connecting portion 13 is coaxially disposed on the inner wall of the housing 11. Preferably, the connecting portion 13 and the housing 11 are integrally formed. An axially extending receiving groove 14 is provided within the connecting portion 13. One end of the connector 20 is coaxially connected to the receiving groove 14. A first gas channel 15 is reserved between the periphery of the connector 20 and the inner wall of the connecting portion 13. A mounting hole 16 is provided at the end of the connecting portion 13 away from the connector 20. One end of the bar holder 30 passes through the mounting hole 16 and connects to the connector 20. A second gas supply channel 17 is reserved between the inner wall of the mounting hole 16 and the periphery of the bar holder 30. The inert gas flows from the gas supply channel 50 in the connector 20 through the gas outlet 60, then flows through the first gas channel 15 and the second gas supply channel 17 before reaching the protective cover 12, providing gas protection for the end of the welding rod, thereby preventing oxidation of the welding part caused by high temperature.

[0027] The connector 20 includes a connector head 21 that engages with the receiving groove 14 and a retainer 22 disposed within the receiving groove 14. The retainer 22 and the connecting portion 13 are threaded together. An air supply channel 50 extends partially from one end of the connector head 21 into the retainer 22. The air supply channel 50 is an annular channel, and the welding rod channel 40 is disposed within the connecting column enclosed by the air supply channel 50. The air supply channel 50 passes through the connector 20 and the rod holding portion 30. In this application, the connector 20 is configured as a detachable structure for easy maintenance. It is worth noting that, to prevent the threaded structure from blocking the first gas channel 15, the threaded structure should be positioned around the retainer 22 between the connector head 21 and the outlet 60. The connector head 21 is used to connect a pipeline for conveying welding wire and inert gas; the connection method and pipeline structure can refer to existing technology. One end of the holding part 30 is connected to the connector 20, and the other end is located near the opening of the shield 12. In this way, the melting part of the welding wire is brought as close as possible to the shield 12. When the shield 12 and the surrounding area are filled with inert protective gas, the welding part can be protected.

[0028] A mounting ring 73 is provided on the periphery of the connecting post 23 corresponding to the vent 60. One end of the drive plate 72 is connected to the mounting ring 73, and the other end is connected to the sealing head 71. Preferably, the connecting post 23 is slidably sleeved on the connecting post 23. In this way, only the existing MIG welding equipment needs to be improved by adding the mounting ring 73, the drive unit 72, and the sealing head 71, and a pressure column 18 (described in detail below) is provided on the connecting part 13. The position of the mounting ring 73 can be determined by having one end of the mounting ring 73 abut against the bottom of the air supply channel 50. After the position is determined, rotating the mounting ring 73 will engage the sealing head 71 with the vent 60, thus completing the installation of the mounting ring 73. A pressure column 18 is provided on the inner wall of the connecting part 13 corresponding to the vent 60. The pressure column 18 is used to assist in the opening and closing control of the vent 60.

[0029] The outer diameter of the plugging head 71 matches the vent hole 60, and the plugging head 71 is slidably disposed within the vent hole 60. An annular vent groove 74 is provided along the depth direction on the side of the plugging head 71 near the pressure column 18. A support column 75 is formed in the middle of the annular vent groove 74. An inflation chamber 751 is provided within the support column 75. A first inflation hole 752 communicating with the inflation chamber 751 is provided around the periphery of the support column 75, and an air supply hole 753 communicating with the air supply channel 50 to the inflation chamber 751 is provided at the bottom of the plugging head 71. A sealing cap 76 is slidably disposed at the top of the support column 75. A buffer spring 77 is provided between the sealing cap 76 and the support column 75. One end of the buffer spring 77 is connected to the sealing cap 76, and the other end is connected to the support column 75. In this application, the purpose of providing the buffer spring 77 is to prolong the opening process of the first inflation hole 752 and prevent over-rushing caused by rapid gas outflow. A second inflation hole 761 is provided on the periphery of the sealing cover 76. When the support column 75 slides along the direction of the sealing cover 76 until the buffer spring 77 no longer undergoes compression deformation, the first inflation hole 752 and the second inflation hole 761 coincide. When the support column 75 does not slide, the first inflation hole 752 and the second inflation hole 761 are not connected. During the upward sliding process of the drive unit 72 driving the support column 75 and the sealing cover 76, the sealing cover 76 does not move under the restriction of the pressure column 18, while the support column 75 moves closer to the sealing cover 76 under the drive of the drive unit 72 until the first inflation hole 752 and the second inflation hole 761 are connected.

[0030] The shape of the first inflation hole 752 is matched to that of the second inflation hole 761. It is worth noting that, to ensure that the overlap (airflow channel) between the first inflation hole 752 and the second inflation hole 761 gradually increases from 0 to a fixed value during the sliding of the support column 75 relative to the sealing cover 76, preferably, the first inflation hole 752 is a rectangular hole, and the second inflation hole 761 is a rectangular hole with a length longer than the first inflation hole 752. When the first inflation hole 752 and the second inflation hole 761 begin to overlap, the overlap gradually increases. When the first inflation hole 752 is completely within the second inflation hole 761, the overlap area no longer changes, and the gas flow rate reaches a stable state. Preferably, the shape of the first inflation hole 752 can also be triangular, rhomboid, or elliptical.

[0031] To improve the sealing performance of the vent 60 during the sliding process of the plug head 71, this application provides a sealing strip on the inner wall of the vent 60. The vent 60 and the plug head 71 are connected by an interference fit through the sealing strip to prevent gas from escaping from the gaps inside the vent 60.

[0032] The drive unit 72 includes a sleeve 721 and a sliding post 722. One end of the sliding post 722 is connected to the sealing head 71, and the other end is slidably connected to the sleeve 721. The end of the sleeve 721 away from the sliding post 722 is connected to the mounting ring 73. An expansion cavity 723 is provided inside the sleeve 721. The expansion cavity 723 is a completely sealed structure. A rubber strip is provided on the inner wall of the sleeve 721, and the sliding post 722 maintains an interference fit with the sleeve 721 during the sliding process of the expansion cavity 723. In this application, an expansion chamber 723 is provided as the driving source for the sliding column 722. Thus, when welding begins, the inert protective gas is only released to the welding site when the welding temperature rises to the point where the gas in the expansion chamber 723 expands and pushes the support column 75 to slide until it connects with the first gas filling hole 752 and the second gas filling hole 761. This optimizes the waste caused by releasing protective gas before the welding temperature is reached at the start of welding. When welding stops and the temperature drops, the gas in the expansion chamber 723 contracts until the first gas filling hole 752 and the second gas filling hole 761 are no longer connected, thus stopping the gas supply.

[0033] The application is used in the following ways:

[0034] During the initial output of the welding electrode, before the welding point temperature of the welding torch head 10 reaches the expansion chamber 723 to the point where it can expand and push the sealing head 71 upward to connect the first air inlet 723 and the second air inlet 761 (welding temperature), the inert protective gas will not flow out from the outlet groove 74 to protect the welding point. As the temperature of the welding torch head 10 rises to the point where the expansion chamber 723 expands, during the upward movement of the sealing head 71, the sealing cover 76 moves downward under the limit of the pressure column 18 to connect the first air inlet 723 and the second air inlet 761. The inert protective gas passes through the gas supply channel 50, the air inlet chamber 751, the outlet groove 74, the first gas supply channel 15 and the second gas supply channel 17 in sequence to protect the molten pool at the welding point and prevent high-temperature oxidation of the welding part.

[0035] Preferably, this application may also include a temperature sensor and an electric push rod to measure the temperature of the weld joint and push the sealing head 71. When the temperature sensor detects that the weld joint has reached the welding temperature, it triggers the electric push rod to push the sealing head 71, thereby achieving the purpose of intelligent control.

[0036] When welding is completed, as the temperature of the welding torch head 10 drops below the welding temperature, the gas in the expansion chamber 723 contracts. Under the contraction effect of the buffer spring 77 and the expansion chamber 723, the sealing head 71 slides until the first inflation port 723 and the second inflation port 761 are no longer connected, thus completing the closure of the inert gas.

[0037] Thus, when the temperature at the weld joint has not reached the welding temperature, the inert shielding gas will not rush out to protect the molten pool. The automatic opening and closing design reduces the waste of inert shielding gas when welding is not underway. Furthermore, the gas flow rate is controlled by the first and second filling ports, which are not immediately fully connected, optimizing the overrush phenomenon of gas when the gas cylinder is opened, and further reducing the waste rate of inert shielding gas.

[0038] The above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit it. Although the present invention has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of the present invention without departing from the spirit and scope of the present invention, and all such modifications and substitutions should be covered within the scope of the claims of the present invention. Technical aspects, shapes, and structures not described in detail in this invention are all well-known technologies.

Claims

1. A special component intelligent welding equipment, characterized in that, The welding torch includes a welding torch head (10), a connector (20), and a rod holder (30). The connector (20) is detachably connected to the welding torch head (10). One end of the rod holder (30) is connected to the connector (20). A welding rod channel (40) is provided in the connector (20) and the rod holder (30). A gas supply channel (50) is provided in the connector (20). An outlet hole (60) is provided on the periphery of the connector (20) and communicates with the gas supply channel (50). A gas protection component (70) is provided in the outlet hole (60). The gas protection component (70) includes a plug (71) slidably disposed in the outlet hole (60) and a driving part (72) for driving the plug (71) to slide. (10) includes an outer shell (11), a protective cover (12) and a connecting part (13). The inner wall of the connecting part (13) is provided with a pressure column (18) corresponding to the air outlet (60). The outer diameter of the sealing head (71) is matched with the air outlet (60). The sealing head (71) is provided with an annular air outlet groove (74) along the depth direction on the side near the pressure column (18). A support column (75) is provided in the annular air outlet groove (74). An inflation chamber (751) is provided in the support column (75). A first inflation hole (752) is provided on the periphery of the support column (75) and communicates with the inflation chamber (751). An air delivery hole (753) is provided at the bottom of the sealing head (71) to communicate with the air delivery channel (50) and the inflation chamber (751).

2. The intelligent welding equipment for special accessories according to claim 1, characterized in that, The protective cover (12) is open at one end and coaxially connected to the outer shell (11) at the other end. The connecting part (13) is coaxially disposed on the inner wall of the outer shell (11). An axially extending receiving groove (14) is provided in the connecting part (13). One end of the connecting member (20) is coaxially connected to the receiving groove (14). A first gas channel (15) is reserved between the periphery of the connecting member (20) and the inner wall of the connecting part (13). A mounting hole (16) is provided at the end of the connecting part (13) away from the connecting member (20). One end of the holding part (30) passes through the mounting hole (16) and is connected to the connecting member (20). A second gas supply channel (17) is reserved between the inner wall of the mounting hole (16) and the periphery of the holding part (30).

3. The intelligent welding equipment for special accessories according to claim 2, characterized in that, The connector (20) includes a connector (21) that engages with the outside of the receiving groove (14) and a retainer (22) disposed in the receiving groove (14). The retainer (22) and the connecting part (13) are threaded together. The air supply channel (50) extends from one end of the connector (21) into the retainer (22) without completely penetrating through it. The air supply channel (50) is an annular channel. The welding rod channel (40) is disposed in the connecting post (23) surrounded by the air supply channel (50). The welding rod channel (40) penetrates the connector (20) and the rod holding part (30).

4. The intelligent welding equipment for special accessories according to claim 3, characterized in that, An installation ring (73) is provided on the periphery of the connecting column (23) corresponding to the air outlet (60). One end of the driving part (72) is connected to the installation ring (73), and the other end is connected to the sealing head (71).

5. The intelligent welding equipment for special accessories according to claim 4, characterized in that, A sealing cap (76) is slidably provided at the top of the support column (75). A buffer spring (77) is provided between the sealing cap (76) and the support column (75). A second air hole (761) is provided on the periphery of the sealing cap (76). When the support column (75) slides in the direction close to the sealing cap (76) until the buffer spring (77) no longer undergoes compression deformation, the first air hole (752) and the second air hole (761) coincide. When the support column (75) does not slide, the first air hole (752) and the second air hole (761) are not connected.

6. The intelligent welding equipment for special accessories according to claim 5, characterized in that, The shape of the first inflation hole (752) is matched to that of the second inflation hole (761).

7. The intelligent welding equipment for special accessories according to claim 5, characterized in that, A sealing strip is provided on the inner wall of the air outlet (60).

8. The intelligent welding equipment for special accessories according to claim 5, characterized in that, The drive unit (72) includes a sleeve (721) and a sliding post (722). One end of the sliding post (722) is connected to the sealing head (71), and the other end is slidably connected to the sleeve (721). The end of the sleeve (721) away from the sliding post (722) is connected to the mounting ring (73).

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