Starting mistake proofing device for welding shielding gas and welding device

Abstract

The utility model discloses a welding shielding gas starting mistake-proofing device and a welding device. The welding shielding gas starting mistake-proofing device comprises a bottom mounting plate, the foot switch is arranged on the bottom mounting plate; the driving mechanism is arranged on the bottom mounting plate; the locking mechanism is connected between the foot switch and the driving mechanism; and the control unit is respectively connected with the driving mechanism and the airflow monitoring sensor. According to the argon arc welding device, the problem that welding parts are scrapped due to the fact that shielding gas is not opened during argon arc welding of aviation type multi-variety small-batch pipe fittings is solved, shielding gas leakage can be effectively prevented for various pipe type product parts, ventilation time can be effectively controlled, accordingly, corresponding defects are eliminated, an original operation mode is not changed, workload is reduced, and the operation process is simple.

Description

Technical Field

[0001] This utility model relates to the field of welding protection technology, and in particular to a welding protective gas start-up error prevention device and a welding device. Background Technology

[0002] During the manufacturing process of argon arc welding for aviation pipelines, the pipeline structure is complex and the welding quality requirements are high. In order to ensure that each pipeline meets the welding quality inspection requirements, argon gas must be turned on as a protective gas throughout the pipeline welding process to prevent welding defects.

[0003] Generally, the operation is carried out manually in sequence. Because the argon gas cylinder switch needs to be manually turned on before each welding operation, and argon gas is introduced into the welding fixture before welding begins, this method has the following disadvantages: a. Because the welding shielding gas switch is manually controlled, leakage of shielding gas often occurs, leading to the scrapping of the welded part; b. The welding shielding gas must be turned on for a period of time to ensure that shielding gas has been introduced into the fixture before welding can begin, otherwise welding defects will occur. Some methods use inert gas shielding devices for welding regular parts and single-product parts. The joint to be welded is placed in the shielding device, filled with inert gas, and then welded. However, this method also has the following drawbacks: This shielding device is only suitable for welding single-product parts, the welding space is limited, and it is not suitable for welding multiple varieties of small batches of pipe fittings. Utility Model Content

[0004] The purpose of this utility model is to propose a welding shielding gas start-up error prevention device to solve the problem of scrapped welded parts caused by failure to turn on the shielding gas during argon arc welding of various types of small batches of aerospace pipe fittings.

[0005] To achieve the above objectives, the following technical solution is adopted: a welding shielding gas start-up error prevention device, including a bottom mounting plate;

[0006] A foot switch is mounted on the bottom mounting plate.

[0007] The drive mechanism is mounted on the bottom mounting plate;

[0008] A locking mechanism is located on one side of the foot switch and is connected to the drive mechanism in a transmission manner.

[0009] The control unit is electrically connected to the drive mechanism and is provided with an external control port.

[0010] Preferably, the control unit presets a delay connection time according to different specifications of pipe fittings.

[0011] Preferably, the locking mechanism includes a lock hole provided on the foot switch and a pin connected to the output end of the drive mechanism. The drive mechanism can drive the pin to move into or out of the lock hole.

[0012] Preferably, the drive mechanism includes a mounting base fixed to the bottom mounting plate and a telescopic electric cylinder located on the mounting base, the output end of which is connected to a locking mechanism via a coupling.

[0013] Preferably, the drive mechanism, airflow monitoring sensor, and control unit are connected to a power supply or an external power supply, and the power supply is mounted on the bottom mounting plate.

[0014] Preferably, a protective shell is provided on the bottom mounting plate, and the drive mechanism and power supply are located inside the protective shell.

[0015] This utility model also provides a welding device, including a welding machine and any of the above-mentioned error prevention devices.

[0016] The beneficial effects achieved by this utility model are:

[0017] Compared with existing technologies, this utility model provides a welding shielding gas start-up error prevention device. By setting a locking mechanism and adjusting the foot switch to a step-on state based on whether the shielding gas is activated, it solves the problem of weld scrap caused by insufficient shielding gas or inadequate shielding gas flow time in argon arc welding of various types of small batches of aerospace-grade pipe fittings. It effectively prevents shielding gas leakage and effectively controls the gas flow time for various pipe products, thereby eliminating corresponding defects. It does not change the original operation method, does not increase the workload of employees, and has a simple operation process. It has strong applicability, requires no modification to welding tooling, and only requires controlling the welding start-up foot switch. The equipment control adopts wireless transmission, requiring no wiring on site, and has high integration, small footprint, and is convenient and simple. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the structure of this utility model.

[0019] Figure 2 This is a schematic diagram of the internal structure of this utility model.

[0020] Figure 3 for Figure 2 Mid-top view of the structure.

[0021] In the diagram, 1-bottom mounting plate, 2-foot switch, 3-drive mechanism, 20-switch base, 21-switch button, 31-mounting base, 32-telescopic electric cylinder, 4-locking mechanism, 41-lock hole, 42-pin, 5-power supply, 6-protective shell. Detailed Implementation

[0022] The technical solutions in the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments.

[0023] In the description of this utility model, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0024] Please refer to the attached document. Figure 1-3 A welding shielding gas start-up error prevention device includes: a bottom mounting plate 1, a foot switch 2, a drive mechanism 3, a locking mechanism 4, and a control unit.

[0025] The bottom mounting plate 1 is used to install the aforementioned components.

[0026] The foot switch 2 is electrically connected to the welding machine and is used to control the opening and closing state of the welding machine. The foot switch is set on the bottom mounting plate 1 and includes a switch base 20 and a switch button 21. The switch button 21 is movably set on the switch base 20.

[0027] Among them, the drive mechanism 3 is used to drive the locking mechanism 4, and it is set on the bottom mounting plate 1;

[0028] The locking mechanism 4 is connected to the drive mechanism 3 and is located on one side of the foot switch 2. It is used to lock or release the switch button 21 to realize the open or closed state of the welding machine.

[0029] The control unit is electrically connected to the drive mechanism 3 and is equipped with an external control port.

[0030] In this embodiment, the external control port of the control unit can be connected to the airflow monitoring sensor on the inert gas supply device to control the drive device 3 according to the control signal of the airflow monitoring sensor. Specifically, the control unit controls the opening and closing of the drive mechanism 3 according to whether it receives the airflow signal from the airflow monitoring sensor. The opening and closing of the drive mechanism 3 controls the locking mechanism 4 to keep the foot switch 2 in a step-on state to avoid scrapping of welded parts caused by the lack of protective gas during argon arc welding of various types of small batches of aerospace pipes.

[0031] In this embodiment, the control unit presets a delay connection time according to different specifications of pipe fittings to avoid the problem of scrapped welded parts caused by insufficient gas supply time for argon arc welding of multiple varieties and small batches of aviation pipe fittings. When the gas cylinder is opened, the gas flow monitoring sensor will transmit the gas flow signal to the control unit. Then, the control unit uses the delay function to control the remote IO to open the drive mechanism 3 according to the set time period. This allows the foot switch to be in the step-able state through the locking mechanism 4. Only then can the foot switch be pressed to start welding. The control unit is preferably a PLC controller, which has a delay function and can directly implement the above control method.

[0032] Please refer to Figure 2 and Figure 3 The locking mechanism 4 includes a locking hole 41 on the foot switch 2 and a pin 42 connected to the output end of the drive mechanism 3. The drive mechanism 3 can drive the pin 42 to move into the locking hole 41. When the gas cylinder is opened, the airflow monitoring sensor transmits the airflow signal to the control unit. Then, the control unit uses a delay function to control the remote I / O to open the drive mechanism 3 according to the set time period, causing the pin 42 to retract and disengage from the locking hole 41. Only then can the foot switch be pressed to start welding.

[0033] Please refer to Figure 2 and Figure 3 The drive mechanism 3 includes a mounting base 31 fixed on the bottom mounting plate 1 and a telescopic electric cylinder 32 located on the mounting base 31. The output end of the telescopic electric cylinder 32 is connected to the pin 42 of the locking mechanism 4 via a coupling. When the gas cylinder is opened, the airflow monitoring sensor transmits the airflow signal to the control unit. Then, the control unit uses a delay function to control the remote I / O to retract the telescopic electric cylinder 32 according to the set time period. The retraction of the telescopic electric cylinder 32 puts the foot switch 2 into a step-on state, avoiding welding failure.

[0034] After welding is completed, the argon gas source is turned off. At this time, the control unit receives the gas flow disconnection signal and controls the telescopic electric cylinder 32 to push the pin 42 of the locking mechanism 4 out. The pin 42 is inserted into the locking hole 41 of the foot switch 2, and the foot switch cannot be started at this time.

[0035] Please refer to Figure 2 and Figure 3 The drive mechanism 3 and the control unit are connected to a power supply 5 or an external power supply, and the power supply 5 is mounted on the bottom mounting plate 1.

[0036] Please refer to Figure 1 To achieve the protective effect, a protective shell 6 is provided on the bottom mounting plate 1, and the drive mechanism 3 and the power supply 5 are located inside the protective shell 6.

[0037] Based on the above, this embodiment can also provide a welding apparatus, including a welding machine and the aforementioned error-proofing device.

[0038] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A welding gas protection activation error-proofing device, characterized by, The application relates to an error-proof device for a welding machine. The application relates to an error-proof device for a welding machine. The application relates to an error-proof device for a welding machine. The application relates to an error-proof device for a welding machine. The application relates to an error-proof device for a welding machine. The application relates to an error-proof device for a welding machine.

2. A misfire prevention device for a protective gas for welding according to claim 1, characterized by: The application relates to an error-proof device for a welding machine.

3. A misfire prevention device for a protective gas for welding according to claim 1, characterized in that: The application relates to an error-proof device for a welding machine.

4. A misfire prevention device for a protective gas for welding according to claim 1, characterized by: The application relates to an error-proof device for a welding machine.

5. A misfire prevention device for a gas start welding torch according to claim 4, wherein: The application relates to an error-proof device for a welding machine.

6. A misfire prevention device for a protective gas for welding according to claim 1, characterized by: The application relates to an error-proof device for a welding machine.

7. A welding device characterized by, The application relates to an error-proof device for a welding machine. The application relates to an error-proof device for a welding machine. The application relates to an error-proof device for a welding machine. The application relates to an error-proof device for a welding machine. The application relates to an error-proof device for a welding machine. The application relates to an error-proof device for a welding machine. The application relates to an error-proof device for a welding machine. The application relates to an error-proof device for a welding machine. The application relates to an error-proof device for a welding machine. The application relates to an error-proof device for a welding machine. The application relates to an error-proof device for a welding machine. The application relates to an error-proof device for a welding machine. The application relates to an error-proof device for a welding machine. The application relates to an error-proof device for a welding machine. The application relates to an error-proof device for a welding machine. The application relates to an error-proof device for a welding machine. The application relates to an error-proof device for a welding machine. The application relates to an error-proof device for a welding machine. The application relates to an error-proof device for a welding machine. The application relates to an error-proof device for a welding machine. The application relates to an error-proof device for a welding machine. The application relates to an error-proof device for a welding machine. The application relates to an error-proof device for a welding machine. The application relates to an error-proof device for a welding machine. The application relates to an error-proof device for a welding machine. The application relates to an error-proof device for a welding machine. The application relates to an error-proof device for a welding machine. The application relates to an error-proof device for a welding machine. The application relates to an error-proof device for a welding machine. The application relates to an error-proof device for a welding machine. The application relates to an error-proof device for a welding machine. The application relates to an error-proof device for a welding machine. The application relates to an error-proof device for a welding machine. The application relates to an error-proof device for a welding machine. The application relates to an error-proof device for a welding machine. The application relates to an error-proof device for a welding machine. The application relates to an error-proof device for a welding machine. The application relates to an error-proof device for a welding machine. The application relates to an error-proof device for a welding machine. The application relates to an error-proof device for a welding machine. The application relates to an error-proof device for a welding machine. The application relates to an error-proof device for a welding machine. The application relates to an error-proof device for a welding machine. The application relates to an error-proof device for a welding machine. The application relates

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