TIG Welding Equipment Speed Conversion Device, Welding Equipment and Its Usage Method

Abstract

The present invention provides a TIG welding equipment speed conversion device, welding equipment and a method of using the same, and relates to the field of welding automation control technology. The TIG welding equipment speed conversion device comprises: a rotating motor, a gear transmission mechanism and a welding gun connection mechanism, wherein the gear transmission mechanism comprises an input shaft, a gear set and an output shaft; the rotating motor is connected to the input shaft, the input shaft is driven by gears, and the output shaft performs a circular motion with the axis of the input shaft as the center of the circle; the output shaft is connected to the welding gun connection mechanism to drive the welding gun connection mechanism to rotate. The beneficial effect of the present technical solution is that the rotating motor is connected to the welding gun connection mechanism through the gear set, which expands the diameter range of the circular motion of the welding gun connection mechanism around the axis of the input shaft, so that the traditional TIG automated welding equipment can be used for welding pipes or pipe inner walls with a larger range of pipe diameters.

Description

Technical Field

[0001] The present invention relates to the technical field of welding automation control, and more specifically, to a speed conversion device for a TIG welding equipment, a welding equipment and a using method thereof. Background Art

[0002] TIG (Tungsten Inert Gas) welding is short for tungsten inert gas welding, generally referred to as gas tungsten arc welding. The main advantages of TIG welding are a wide range of welding materials, and various metal materials can be welded, such as steel, aluminum, titanium, magnesium, etc. Moreover, the welding reliability of TIG welding is high, and important components can be welded. Currently, it is widely used in nuclear power plants and the aviation and aerospace industries.

[0003] The internal software program of the welding power controller of the existing TIG automatic welding equipment has range limitations for the input parameters of the welding set diameter and the welding torch set speed, and can only weld pipes or the inner walls of pipes with a preset range of pipe diameters. It is impossible to weld the pipes or the inner walls of pipes to be welded outside the preset range, and the versatility is not strong. Summary of the Invention

[0004] The problem solved by the present invention is how to make the traditional TIG automatic welding equipment applicable to welding pipes or the inner walls of pipes with a larger range of pipe diameters.

[0005] To solve the above problems, the present invention provides a speed conversion device for a TIG welding equipment, including: a rotating motor, a gear transmission mechanism and a welding torch connection mechanism. The gear group includes an input shaft, a gear group and an output shaft; the rotating motor is connected to the input shaft, and the input shaft drives the output shaft to make a circular motion with the input shaft as the center through the gear group; the output shaft is connected to the welding torch connection mechanism to drive the welding torch connection mechanism to rotate.

[0006] The beneficial effect of the present invention is that: the speed conversion device for a TIG welding equipment provided by the present invention connects the input shaft of the gear group through a rotating motor, and the input shaft of the gear group drives the output shaft to rotate through gears, thereby driving the welding torch connection mechanism to rotate. The welding torch connection mechanism is connected with a welding torch. Thus, compared with the traditional TIG welding equipment, the diameter range of the circular motion of the welding torch is expanded, and the traditional TIG welding equipment can be used to weld pipes or the inner walls of pipes with a larger range of pipe diameters, improving the versatility of the traditional TIG welding equipment. At the same time, the rotation speed of the rotating motor is adjustable. By adjusting the rotation speed of the rotating motor, the linear speed of the circular motion of the welding torch can be adjusted to ensure the efficiency and welding quality when welding pipes or the inner walls of pipes with different diameters.

[0007] Optionally, the gear group includes a rotating shaft driving gear, a gear shaft and a driven gear; the gear shaft includes a first gear and a second gear fixedly connected coaxially;

[0008] The input shaft is connected to the rotating shaft driving gear, the rotating shaft driving gear is in tooth engagement with the first gear, the second gear is in tooth engagement with the driven gear, and the driven gear is connected to the output shaft.

[0009] Optionally, upper and lower fixed supports are oppositely arranged on two opposite sides of the gear shaft in the axial direction; the upper fixed support includes a first clamping plate, a second clamping plate and a third clamping plate; the first clamping plate and the second clamping plate are oppositely arranged, and the rotating shaft driving gear is arranged between the first clamping plate and the second clamping plate; the third clamping plate is oppositely arranged with the lower fixed support, and the gear shaft is arranged between the third clamping plate and the lower fixed support.

[0010] Optionally, a rotational speed measuring mechanism is arranged at the gear shaft for measuring the linear speed on the side of the driven gear; the rotational speed measuring mechanism includes an encoder and a measurement control instrument, the encoder and the measurement control instrument are electrically connected, and the measurement control instrument is used for displaying the linear speed in real time.

[0011] Optionally, the welding torch connecting mechanism includes a welding torch rotating connecting shaft and a welding torch mounting plate; one end of the welding torch rotating connecting shaft is connected to the output shaft, and the other end is connected to the welding torch mounting plate; a plurality of welding torch hole positions are formed in the welding torch mounting plate, and the welding torch hole positions are used for arranging welding torches.

[0012] The present invention also provides a welding device, including the TIG welding device speed conversion device as described above.

[0013] The advantages of the welding device of the present invention and the above-mentioned TIG welding device speed conversion device relative to the prior art are the same, and will not be elaborated here.

[0014] Optionally, the welding device of the present invention further includes: a welding power controller, which is electrically connected to the rotating motor and is used for controlling the rotational speed of the rotating motor.

[0015] The present invention also provides a using method of the welding device. Based on the above-mentioned welding device, it includes:

[0016] Obtain the actual welding speed, the actual pipe diameter to be welded and the set diameter required during welding;

[0017] Calculate the set speed according to the actual welding speed, the actual pipe diameter to be welded and the set diameter;

[0018] Input the set diameter and the set speed into the welding power controller;

[0019] The welding power controller controls the rotational speed of the rotating motor according to the set diameter and the set speed.

[0020] The usage method of the welding equipment described in the present invention is the same as the advantages of the above-mentioned TIG welding equipment speed conversion device or the welding equipment over the prior art, and will not be elaborated here.

[0021] Optionally, calculating the set speed according to the actual welding speed, the actual nozzle diameter, and the set diameter includes calculating the set speed according to a first formula, where the first formula includes:

[0022]

[0023] where, V 1 is the set speed, D 1 is the set diameter, D 2 is the actual nozzle diameter, V 2 is the actual welding speed, k is the conversion coefficient, and π is the pi.

[0024] Optionally, calculating the set speed according to the actual welding speed, the actual nozzle diameter, and the set diameter includes writing a WeChat mini-program, inputting the actual welding speed, the actual nozzle diameter, and the set diameter in the WeChat mini-program, and the mini-program displays the set speed after calculation. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 is a schematic structural diagram of the TIG welding equipment speed conversion device according to an embodiment of the present invention; Figure 1 ;

[0026] Figure 2 is a schematic structural diagram of the TIG welding equipment speed conversion device according to an embodiment of the present invention; Figure 2 ;

[0027] Figure 3 is a schematic diagram of the gear shaft structure in the TIG welding equipment speed conversion device according to an embodiment of the present invention;

[0028] Figure 4 is a schematic diagram of the upper fixed support structure in the TIG welding equipment speed conversion device according to an embodiment of the present invention;

[0029] Figure 5 is a flowchart of the usage method of the welding equipment according to an embodiment of the present invention.

[0030] Description of the reference numerals:

[0031] 1 - Measuring control instrument; 2 - Rotating motor; 3 - Encoder; 4 - Gear shaft; 401 - First gear; 402 - Second gear; 5 - Shoulder bearing; 6 - Driving gear of rotating shaft; 7 - Connecting plate; 8 - Driven gear; 9 - Bush; 10 - Encoder connection cable; 11 - Lower fixed support; 12 - Upper fixed support; 121 - First clamping plate; 122 - Second clamping plate; 123 - Third clamping plate; 13 - Welding torch rotating connection shaft; 14 - Welding torch mounting plate; 15 - First welding torch; 16 - Second welding torch; 17 - Third welding torch; 18 - Fourth welding torch. Detailed implementation manners

[0032] To make the above - mentioned objects, features, and advantages of the present invention more obvious and understandable, the following describes in detail the specific embodiments of the present invention with reference to the accompanying drawings.

[0033] It should be noted that the terms "first", "second", etc. in the description, claims, and the above - mentioned drawings of the present invention are used to distinguish similar objects and do not necessarily need to describe a specific order or sequence. It should be understood that such used data can be interchanged under appropriate circumstances so that the embodiments of the present invention described here can be implemented in an order different from those illustrated or described here.

[0034] In the description of this specification, the description with reference to terms such as "embodiment", "some embodiments", and "optional embodiments" means that the specific features, structures, materials, or characteristics described in connection with the embodiment or implementation manner are included in at least one embodiment or implementation manner of the present invention. In this specification, the schematic expressions of the above - mentioned terms do not necessarily refer to the same embodiment or implementation manner. Moreover, the specific features, structures, materials, or characteristics described can be combined in a suitable manner in any one or more embodiments or implementation manners.

[0035] Combined with Figure 1 and Figure 2 As shown, an embodiment of the present invention provides a TIG welding equipment speed conversion device, including: a rotating motor 2, a gear transmission mechanism, and a welding torch connection mechanism. The gear transmission mechanism includes an input shaft, a gear set, and an output shaft; the rotating motor 2 is connected to the input shaft, and the input shaft drives the output shaft to perform a circular motion with the input shaft as the center through gears; the output shaft is connected to the welding torch connection mechanism to drive the welding torch connection mechanism to rotate.

[0036] Specifically, in this embodiment, the rotary motor 2 is connected to the input shaft of the gear set, and they are coaxially connected between the rotary motor 2 and the input shaft of the gear set to ensure that the output shaft of the rotary motor 2 can drive the input shaft of the gear set to rotate synchronously. The gear set includes an input shaft and an output shaft, and the input shaft and the output shaft are connected by a plurality of gears to transmit the rotational power of the input shaft to the output shaft, and the output shaft makes a circular motion with the input shaft as the center through the gear connection. In this way, the motion range of the output shaft is expanded. The output shaft is connected to the welding torch connection structure and drives the welding torch connection structure to make a circular motion around the input shaft.

[0037] In some embodiments, the welding torch connection mechanism includes a welding torch rotary connection shaft 13 and a welding torch mounting plate 14; one end of the welding torch rotary connection shaft 13 is connected to the output shaft, and the other end is connected to the welding torch mounting plate 14; a plurality of welding torch holes are provided on the welding torch mounting plate 14, and the welding torch holes are used for arranging welding torches. Figure 1 As shown Figure 1 A possible way of opening holes is shown. This way of opening holes is applicable to surfacing the end face of a pipeline. Four welding torch holes are sequentially opened along the long side direction of the welding torch mounting plate 14 for sequentially arranging a first welding torch 15, a second welding torch 16, a third welding torch 17, and a fourth welding torch 18. In this way, surfacing of the end faces of pipelines with different diameters can be achieved. It should be noted that in this embodiment, the way of opening holes on the welding torch mounting plate 14 is not limited, and a plurality of welding torch holes can be opened according to actual needs, and the plurality of welding torch holes can be arranged sequentially or staggeredly.

[0038] In some embodiments, the welding torch connecting plate 7 can drive the welding torch to rotate 90 degrees to make the welding torch perpendicular to the axial direction of the pipeline, so as to facilitate welding of the side of the pipeline.

[0039] The beneficial effects of the embodiment of the present invention are as follows: The speed conversion device of the TIG welding equipment provided by the present invention connects the input shaft of the gear set through the rotary motor 2, and the input shaft of the gear set drives the output shaft to rotate through gears, thereby driving the welding torch connection mechanism to rotate. The welding torch connection mechanism is connected with a welding torch. In this way, compared with the traditional TIG welding equipment, the diameter range of the circular motion of the welding torch is expanded, and pipelines or pipe inner walls with a larger diameter range can be welded by the traditional TIG welding equipment, improving the versatility of the traditional TIG welding equipment. At the same time, the rotation speed of the rotary motor 2 is adjustable. By adjusting the rotation speed of the rotary motor 2, the linear speed of the circular motion of the welding torch can be adjusted to ensure the efficiency and welding quality when welding pipelines or pipe inner walls with different diameters.

[0040] In another alternative embodiment of the present invention, the gear set includes a rotating shaft driving gear 6, a gear shaft 4, and a driven gear 8; the gear shaft 4 includes a first gear 401 and a second gear 402 that are coaxially and fixedly connected; the input shaft is connected to the rotating shaft driving gear 6, the rotating shaft driving gear 6 is in tooth engagement with the first gear 401, the second gear 402 is in tooth engagement with the driven gear 8, and the driven gear 8 is connected to the output shaft.

[0041] Specifically, in this embodiment, in combination with Figure 3 As shown, the gear shaft 4 includes a first gear 401 and a second gear 402 that are coaxially and fixedly connected. The sizes and tooth ratios of the first gear 401 and the second gear 402 are set according to actual needs. The first gear 401 and the second gear 402 are coaxially and fixedly connected to form the gear shaft 4. The first gear 401 is in tooth engagement with the rotating shaft driving gear 6, and the second gear 402 is in tooth engagement with the driven gear 8. The driven gear 8 is connected to the output shaft. In this way, the rotation of the rotating shaft driving gear 6 drives the rotation of the first gear 401. Since the first gear 401 and the second gear 402 are coaxially and fixedly connected, the first gear 401 and the second gear 402 rotate coaxially at the same angular velocity. The second gear 402 drives the driven gear 8 to perform a planetary motion with the axis of the rotating shaft driving gear 6 as the center. In some embodiments, the output shaft includes a connecting plate 7 and a shaft sleeve 9. The driven gear 8 is connected with a shaft sleeve 9 through the connecting plate 7, and the shaft sleeve 9 is rotatably connected with the welding torch rotating connecting shaft 13, so that the welding torch rotating connecting shaft 13 performs a circular motion with the axis of the rotating shaft driving gear 6 as the center.

[0042] In this embodiment, by setting a planetary gear structure in the gear set, the driven shaft is enabled to perform a circular motion around the axis of the rotating shaft driving gear 6, expanding the range of the circular motion of the welding torch connecting mechanism, and thus can be adapted to the welding of pipe end faces with different pipe diameters.

[0043] In another alternative embodiment of the present invention, in combination with Figure 4 As shown, upper fixed supports 12 and lower fixed supports 11 are oppositely arranged on both axial sides of the gear shaft 4; the upper fixed support 12 includes a first clamping plate 121, a second clamping plate 122, and a third clamping plate 123; the first clamping plate 121 and the second clamping plate 122 are oppositely arranged, and the rotating shaft driving gear 6 is arranged between the first clamping plate 121 and the second clamping plate 122; the third clamping plate 123 is oppositely arranged with the lower fixed support 11, and the gear shaft 4 is arranged between the third clamping plate 123 and the lower fixed support 11.

[0044] In this embodiment, the rotating shaft driving gear 6 is arranged between the first clamping plate 121 and the second clamping plate 122, which can effectively prevent the axial movement of the rotating shaft driving gear 6 and improve the transmission stability. The gear shaft 4 is arranged between the third clamping plate 123 and the lower fixed support 11, which can effectively prevent the axial movement of the gear shaft 4 and improve the transmission stability.

[0045] In another alternative embodiment of the present invention, a rotational speed measuring mechanism is provided at the gear shaft 4 for measuring the linear velocity on the side of the driven gear 8. The rotational speed measuring mechanism includes an encoder 3 and a measurement control instrument 1. The encoder 3 and the measurement control instrument 1 are electrically connected, and the measurement control instrument 1 is used to display the linear velocity in real time.

[0046] Specifically, in some embodiments, the encoder 3 is arranged on the third clamping plate 123 of the upper fixed support 12. A shoulder-bearing 5 is also arranged between the encoder 3 and the third clamping plate 123. At the same time, a micro elastic coupling is used to connect the encoder 3 and the gear shaft 4, so that the axial force received by the encoder 3 at the shaft end is as small as possible, thereby ensuring the detection accuracy of the encoder.

[0047] In some embodiments, the encoder 3 calculates the actual linear velocity of the driven gear 8 by measuring the number of pulses per revolution of the gear shaft 4. There is a certain reduction ratio between the gear shaft 4 and the driven gear 8. Therefore, the measured linear velocity at the gear shaft 4 needs to be multiplied by the reduction ratio between the gear shaft 4 and the driven gear 8 to obtain the actual linear velocity of the driven gear 8. In some embodiments, the encoder 3 and the measurement control instrument 1 are electrically connected, and the measurement control instrument 1 can display the linear velocity in real time, which is convenient for the operator to monitor the working state of the welding torch in real time.

[0048] An embodiment of the present invention further provides a welding device, including the TIG welding device speed conversion device as described above.

[0049] The advantages of the welding device of the present invention and the above TIG welding device speed conversion device over the prior art are the same, and will not be elaborated here.

[0050] In some embodiments, the welding device further includes a welding power controller, which is electrically connected to the rotating motor 2 and used to control the rotational speed of the rotating motor 2. By controlling the rotational speed of the rotating motor 2, the linear velocity of the welding torch during the welding of the pipe end face can be adjusted, thereby adjusting the speed of the welding process and ensuring the welding quality and efficiency.

[0051] Combined with Figure 5As shown, an embodiment of the present invention further provides a method for using a welding device. Based on the above welding device, it includes: obtaining the actual welding speed, actual pipe diameter to be welded, and set diameter required during welding; calculating the set speed according to the actual welding speed, the actual pipe diameter to be welded, and the set diameter; inputting the set diameter and the set speed into a welding power supply controller; and the welding power supply controller controlling the rotational speed of a rotating motor according to the set diameter and the set speed.

[0052] Specifically, in this embodiment, during the actual welding process, the pipe diameter of the workpiece to be welded may not be within the range of the set diameter and set speed input into the welding power supply controller. Therefore, according to the actual welding speed required by the welding torch during actual welding, the actual pipe diameter of the workpiece being welded, and the set diameter set in the welding power supply controller, the set speed to be input into the welding power supply controller is calculated, thereby ensuring that the set diameter and the set speed are within the range of the input parameters of the welding power supply controller. This expands the range of pipe diameters that can actually be welded.

[0053] The method for using the welding device of the present invention has the same advantages as the above TIG welding device speed conversion device or welding device compared to the prior art, and will not be elaborated here.

[0054] In another optional embodiment of the present invention, the calculating the set speed according to the actual welding speed, the actual pipe diameter to be welded, and the set diameter includes calculating the set speed according to a first formula, where the first formula includes:

[0055]

[0056] where, V 1 is the set speed, D 1 is the set diameter, D 2 is the actual pipe diameter to be welded, V 2 is the actual welding speed, k is a conversion coefficient, and π is pi.

[0057] In some embodiments, the preferred value of the set diameter D 1 of the welding power supply controller is 100 mm, and the preferred value of the conversion coefficient k is 2.3. In this embodiment, according to the actual welding requirements, the actual pipe diameter D 2 = 320 mm, V 2 = 120 mm / min are set and substituted into the first formula to obtain the set speed that needs to be input into the welding power supply controller as

[0058]

[0059] The set speed V 1and the set diameter D 1 Input the welding power supply controller. After starting the welding, the welding torch can operate according to the actual pipe connection diameter D 2 and the actual welding speed V 2 for welding. This broadens the range of pipe diameters that can be welded by traditional TIG welding equipment.

[0060] In another optional embodiment of the present invention, calculating the set speed based on the actual welding speed, the actual pipe connection diameter, and the set diameter includes writing a WeChat mini-program. Input the actual welding speed, the actual pipe connection diameter, and the set diameter in the WeChat mini-program, and the set speed will be displayed after calculation by the mini-program.

[0061] In this embodiment, by designing the mini-program, the calculation process can be integrated into the mini-program. By inputting the actual welding speed and the actual pipe connection diameter in the mini-program, the set diameter and the set speed that need to be input into the welding power supply controller can be obtained, which is convenient and fast. At the same time, the link of the mini-program can be set as a QR code to facilitate the staff to scan the code for calculation, improving the convenience of use.

[0062] Although the present disclosure is disclosed as above, the protection scope of the present disclosure is not limited thereto. Those skilled in the art can make various changes and modifications without departing from the spirit and scope of the present disclosure, and these changes and modifications will all fall within the protection scope of the present disclosure.

Claims

1. A welding device, characterized in that, it includes a TIG welding device speed conversion device and a welding power supply controller; The TIG welding device speed conversion device includes: a rotating motor (2), a gear transmission mechanism and a welding torch connection mechanism. The gear transmission mechanism includes an input shaft, a gear set and an output shaft; the rotating motor (2) is connected to the input shaft, and the input shaft drives the output shaft to make a circular motion around the axis of the input shaft through the gear set; the output shaft is connected to the welding torch connection mechanism to drive the welding torch connection mechanism to rotate; the gear set also includes a rotating shaft driving gear (6), a gear shaft (4) and a driven gear (8); the gear shaft (4) includes a first gear (401) and a second gear (402) fixedly connected coaxially; the input shaft is connected to the rotating shaft driving gear (6), the rotating shaft driving gear (6) is in tooth engagement with the first gear (401), the second gear (402) is in tooth engagement with the driven gear (8), and the driven gear (8) is connected to the output shaft; a rotational speed measuring mechanism is provided at the gear shaft (4), and the rotational speed measuring mechanism is used to measure the linear speed on the side of the driven gear (8); the rotational speed measuring mechanism includes an encoder (3) and a measurement controller (1), the encoder (3) and the measurement controller (1) are electrically connected, and the measurement controller (1) is used to display the linear speed in real time; The welding power supply controller is electrically connected to the rotating motor (2) and is used to control the rotational speed of the rotating motor (2); Calculate the set speed according to the actual welding speed, the actual pipe diameter and the set diameter; input the set diameter and the set speed into the welding power supply controller; the welding power supply controller controls the rotational speed of the rotating motor according to the set diameter and the set speed; wherein, calculating the set speed according to the actual welding speed, the actual pipe diameter and the set diameter includes: Calculate the set speed according to the first formula, where the first formula includes: ； Among them, V 1 is the set speed, D 1 is the set diameter, D 2 is the actual takeover diameter, V 2 is the actual welding speed, is the conversion coefficient, and π is the pi.

2. The welding device according to claim 1, characterized in that, The gear shaft (4) is provided with an upper fixed support (12) and a lower fixed support (11) oppositely arranged on both sides along the axial direction; the upper fixed support (12) includes a first clamping plate (121), a second clamping plate (122) and a third clamping plate (123); the first clamping plate (121) and the second clamping plate (122) are arranged oppositely, and the rotating shaft driving gear (6) is arranged between the first clamping plate (121) and the second clamping plate (122); the third clamping plate (123) is arranged oppositely to the lower fixed support (11), and the gear shaft (4) is arranged between the third clamping plate (123) and the lower fixed support (11).

3. The welding device according to claim 1, characterized in that, The torch connection mechanism includes a torch rotation connection shaft (13) and a torch mounting plate (14); one end of the torch rotation connection shaft (13) is connected to the output shaft, and the other end is connected to the torch mounting plate (14); a plurality of torch holes are provided on the torch mounting plate (14), and the torch holes are used to set the torch.

4. A method for using a welding device, based on the welding device according to any one of claims 1-3, characterized in that it includes: obtaining the actual welding speed, the actual pipe diameter to be welded, and the set diameter required during welding; calculating a set speed according to the actual welding speed, the actual pipe diameter to be welded, and the set diameter; inputting the set diameter and the set speed into a welding power controller; the welding power controller controls the rotational speed of the rotation motor according to the set diameter and the set speed.

5. The method for using a welding device according to claim 4, characterized in that the calculating the set speed according to the actual welding speed, the actual pipe diameter to be welded, and the set diameter includes: calculating the set speed according to a first formula, where the first formula includes: ； Among them, V 1 is the set speed, D 1 is the set diameter, D 2 is the actual takeover diameter, V 2 is the actual welding speed, is the conversion coefficient, and π is the ratio of a circle's circumference to its diameter.

6. The method for using a welding device according to claim 4, characterized in that the calculating the set speed according to the actual welding speed, the actual pipe diameter to be welded, and the set diameter includes writing a WeChat mini-program, inputting the actual welding speed, the actual pipe diameter to be welded, and the set diameter in the WeChat mini-program, and the mini-program displays the set speed after calculation.

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