TIG welding wire feeder

Abstract

This invention belongs to the field of shipbuilding technology and discloses a TIG welding wire feeding device, which includes a housing, a wire feeding wheel assembly, a drive unit, and a pressure sensing switch. The housing has a through hole for the welding wire to pass through. The wire feeding wheel assembly is disposed within the housing and includes a first wheel and a second wheel facing each other, clamping the welding wire between them. The drive unit is disposed within the housing, and its output end is connected to the first wheel and / or the second wheel to drive them to rotate and feed the welding wire. The pressure sensing switch is disposed on the housing and connected to the drive unit to adjust the output speed of the drive unit by the magnitude of the pressing pressure. By sensing the user's pressing pressure through the pressure sensing switch, the output speed of the drive unit is adjusted, thereby regulating the wire feeding speed, reducing the difficulty of welding techniques, and reducing user fatigue during long-term use, thus reducing labor intensity and improving the welding quality of TIG welding.

Description

Technical Field

[0001] This invention relates to the field of shipbuilding technology, and in particular to a TIG welding wire feeding device. Background Technology

[0002] In the shipbuilding industry, especially in the construction of aluminum ships, manual TIG welding is a commonly used welding method. During the welding process, the welder needs to manually feed the wire. The wire feeding speed is difficult to adjust and control, and requires continuous accumulation of experience and techniques. Poor control of the wire feeding speed will directly affect the welding quality, including weld leg height, weld appearance and formation, porosity and other welding defects. Therefore, manual TIG welding has very high requirements for the skill level of welders and the welding technology is difficult. In addition, long-term manual wire feeding can easily lead to operator fatigue, affecting the wire feeding speed and thus affecting the welding quality. Summary of the Invention

[0003] The purpose of this invention is to provide a TIG welding wire feeding device that reduces welding difficulty, facilitates adjustment of wire feeding speed, and thus improves welding quality.

[0004] To achieve this objective, the present invention adopts the following technical solution:

[0005] TIG welding wire feeding device, including:

[0006] A housing having a through hole for a welding wire to pass through;

[0007] A wire feeding wheel assembly is disposed within the housing. The wire feeding wheel assembly includes a first wheel and a second wheel arranged opposite to each other, the first wheel and the second wheel clamping the welding wire relative to each other.

[0008] A driving component is disposed within the housing, and the output end of the driving component is connected to the first wheel and / or the second wheel to drive them to rotate and deliver the welding wire;

[0009] A pressure sensor switch is disposed on the housing and connected to the drive unit to adjust the output speed of the drive unit by the magnitude of the pressing pressure.

[0010] Preferably, the drive component is connected to the first wheel, and the distance between the second wheel and the first wheel is adjustable.

[0011] Preferably, the wire feeding wheel assembly further includes a first drive shaft and a second drive shaft. The first wheel is disposed on the first drive shaft, and the second wheel is disposed on the second drive shaft. The first drive shaft is rotatably connected to the housing. The housing has an elongated hole along the direction close to or away from the first drive shaft. The second drive shaft slides within the elongated hole. A positioning shaft is disposed between the second drive shaft and the first drive shaft. An elastic element is provided between the positioning shaft and the second drive shaft to keep the second drive shaft close to the first drive shaft. The output end of the drive member is connected to the first drive shaft.

[0012] Preferably, the elastic element is a snap-fit ​​spring.

[0013] Preferably, the driving component is a motor, the output end of which is connected to the first transmission shaft, and the pressure sensing switch is connected to the motor to adjust the motor speed by adjusting the amount of pressure applied.

[0014] Preferably, a power supply component is also provided, the power supply component including a power source connected to the drive unit.

[0015] Preferably, both the outer circumferential surfaces of the first wheel and the second wheel are provided with clamping grooves.

[0016] Preferably, the adjustment distance between the first wheel and the second wheel is 2-5mm.

[0017] Preferably, the housing is further provided with a plurality of spaced-apart snap-on plates, each snap-on plate having through holes, and the channel formed by the through holes of the plurality of snap-on plates is located between the first wheel and the second wheel.

[0018] Preferably, the housing includes a wiring section and a handheld section, the wiring section and the handheld section are arranged in a T-shape, the through hole is provided in the wiring section, and the pressure sensing switch is provided in the handheld section.

[0019] The beneficial effects of this invention are:

[0020] The pressure sensor switch senses the user's pressing force, thereby adjusting the output speed of the drive component, the rotation speed of the first and second wheels, and thus the wire feeding speed. This reduces the difficulty of welding techniques, reduces user fatigue during long-term use, lowers labor intensity, and improves the welding quality of TIG welding. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the TIG welding wire feeding device of the present invention;

[0022] Figure 2 yes Figure 1 Sectional view along the AA direction.

[0023] In the picture:

[0024] 1. Housing; 11. Cable routing section; 12. Handheld part; 2. Wire feeding wheel assembly; 21. First wheel; 22. Second wheel; 23. First drive shaft; 24. Second drive shaft; 3. Drive component; 4. Pressure sensing switch; 5. Elastic component; 6. Positioning shaft; 7. Buckle plate; 8. Power supply assembly; 81. Power supply; 82. Motor converter; 9. Welding wire. Detailed Implementation

[0025] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and not intended to limit it. Furthermore, it should be noted that, for ease of description, the accompanying drawings show only the parts relevant to the present invention, and not all of the structures.

[0026] In the description of this invention, unless otherwise explicitly specified and limited, the terms "connected," "linked," and "fixed" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0027] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0028] In the description of this embodiment, the terms "upper," "lower," "left," and "right," etc., refer to the orientation or positional relationship shown in the accompanying drawings. They are used only for ease of description and simplification of operation, 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 the present invention. In addition, the terms "first" and "second" are used only for distinction in description and have no special meaning.

[0029] like Figure 1 and Figure 2 As shown, this embodiment provides a TIG welding wire feeding device, which includes a housing 1, a wire feeding wheel assembly 2, a driving component 3, and a pressure sensing switch 4. The housing 1 is provided with a through hole for the welding wire 9 to pass through. The wire feeding wheel assembly 2 is disposed inside the housing 1 and includes a first wheel 21 and a second wheel 22 arranged opposite to each other, which clamp the welding wire 9. The driving component 3 is disposed inside the housing 1, and the output end of the driving component 3 is connected to the first wheel 21 and / or the second wheel 22 to drive them to rotate and feed the welding wire 9. The pressure sensing switch 4 is disposed on the housing 1 and is connected to the driving component 3 to adjust the output speed of the driving component 3 by adjusting the pressure applied.

[0030] The pressure sensor switch 4 senses the user's pressing pressure, thereby adjusting the output speed of the drive unit 3, the rotation speed of the first wheel 21 and the second wheel 22, and thus the feeding speed of the welding wire 9. This reduces the difficulty of welding technology, reduces user fatigue during long-term use, lowers labor intensity, and improves the welding quality of TIG welding.

[0031] It is understood that the pressure sensing switch 4 includes, but is not limited to, the connection between the circuit board and the pressure sensor.

[0032] like Figure 1 and Figure 2 As shown, in this embodiment, the housing 1 includes a wiring section 11 and a handheld section 12. The wiring section 11 and the handheld section 12 are arranged in a T-shape. The wiring section 11 is provided with a hole, and the pressure sensing switch 4 is provided on the handheld section 12 to facilitate the user's handhold. For example, the handheld section 12 and the wiring section 11 are integrally formed.

[0033] like Figure 1 and Figure 2As shown, in this embodiment, the driving component 3 is connected to the first wheel 21 to drive the first wheel 21 to rotate; that is, the first wheel 21 is the driving wheel, and the second wheel 22 is the driven wheel. In other embodiments, the second wheel 22 can be connected, making the second wheel 22 the driving wheel; or both the first wheel 21 and the second wheel 22 can be driving wheels. Furthermore, the distance between the first wheel 21 and the second wheel 22 is adjustable, thereby accommodating welding wires 9 of different sizes and expanding the scope of application. Specifically, the wire feeding wheel assembly 2 includes a first drive shaft 23 and a second drive shaft 24. The first drive shaft 23 is rotatably mounted inside the housing 1 via bearings. A first wheel 21 is mounted on the first drive shaft 23. An elongated hole is provided on the housing 1 along the direction close to or away from the first drive shaft 23. A bearing is slidably mounted in the elongated hole. The second drive shaft 24 slides within the elongated hole via bearings. A second wheel 22 is mounted on the second drive shaft 24, thereby adjusting the distance between the first wheel 21 and the second wheel 22 to accommodate welding wires 9 of different sizes. A positioning shaft 6 is also provided on the housing, positioned between the first drive shaft 23 and the second drive shaft 24. An elastic element 5 is provided between the second drive shaft 24 and the positioning shaft 6, thereby keeping the second drive shaft 24 close to the first drive shaft 23 to clamp and feed the welding wire 9. The output end of the drive unit 3 is connected to the first drive shaft 23, thereby driving the first drive shaft 23 to feed the welding wire 9. To prevent the rotation of the second drive shaft 24 from being obstructed, in this embodiment, the elastic element 5 connects the positioning shaft 6 to the bearing on which the second drive shaft 24 is located; exemplarily, the elastic element 5 is a snap-fit ​​spring. When the welding wire 9 enters between the first wheel 21 and the second wheel 22 through the through hole, it can adapt to the size of the welding wire 9 by abutting against the second wheel 22, thus expanding its applicable range. Exemplarily, the adjustment distance between the first wheel 21 and the second wheel 22 is 2-5mm. Figure 2 As shown, clamping grooves are provided on the outer peripheral surfaces of the first wheel 21 and the second wheel 22, which enables the welding wire 9 to be fed more stably.

[0034] like Figure 1 As shown, in this embodiment, the housing 1 is also provided with a plurality of spaced-apart snap plates 7. The snap plates 7 are provided with through holes. The through holes of the plurality of snap plates 7 are located on the same straight line to form a channel for the welding wire 9 to pass through. The channel is located between the first wheel 21 and the second wheel 22, thereby restricting the range of motion of the welding wire 9 when it is being fed.

[0035] In this embodiment, the driving component 3 is a motor. Both the first drive shaft 23 and the output end of the motor are equipped with pulleys. The output end of the motor is connected to the first drive shaft 23 via a belt drive. The pressure-sensing switch 4 is connected to the motor, thereby adjusting the motor speed by changing the pressing pressure. In other embodiments, both the first drive shaft 23 and the output end of the motor can be equipped with sprockets, and the output end of the motor is connected to the first drive shaft 23 via a chain drive; alternatively, both the first drive shaft 23 and the output end of the motor can be equipped with gears, and transmission is achieved through gear meshing.

[0036] In this embodiment, a power supply component 8 is also provided. The power supply component 8 includes a power supply 81 and a motor converter 82. The power supply 81 is connected to the motor converter 82, and the motor converter 82 is connected to the aforementioned drive unit 3, thereby eliminating the limitation of the applicable range of the power cord. For example, the power supply 81 is a rechargeable battery, and the housing 1 is provided with an openable or closed switch door, which corresponds to the power supply 81, so that the battery can be removed for charging.

[0037] Obviously, the above embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the implementation of the present invention. Those skilled in the art will be able to make various obvious changes, readjustments, and substitutions without departing from the scope of protection of the present invention. It is neither necessary nor possible to exhaustively describe all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the scope of protection of the claims of the present invention.

Claims

1. A TIG welding wire feeding device, characterized in that, include: The housing (1) is provided with a through hole for the welding wire (9) to pass through; Wire feeding wheel assembly (2), the wire feeding wheel assembly (2) is disposed inside the housing (1), the wire feeding wheel assembly (2) includes a first wheel (21) and a second wheel (22) disposed opposite to each other, the first wheel (21) and the second wheel (22) clamp the welding wire (9) opposite to each other; A drive unit (3) is disposed inside the housing (1). The output end of the drive unit (3) is connected to the first wheel (21) and / or the second wheel (22) to drive them to rotate and convey the welding wire (9). A pressure sensor switch (4) is disposed on the housing (1) and connected to the drive unit (3) to adjust the output speed of the drive unit (3) by adjusting the magnitude of the pressing pressure. The wire feeding wheel assembly (2) further includes a first drive shaft (23) and a second drive shaft (24). The first wheel (21) is disposed on the first drive shaft (23), and the second wheel (22) is disposed on the second drive shaft (24). The first drive shaft (23) is rotatably connected to the housing (1). The housing (1) has an elongated hole along the direction close to or away from the first drive shaft (23). The second drive shaft (24) slides in the elongated hole. A positioning shaft (6) is disposed between the second drive shaft (24) and the first drive shaft (23). An elastic element (5) is provided between the positioning shaft (6) and the second drive shaft (24) to keep the second drive shaft (24) close to the first drive shaft (23). The output end of the driving member (3) is connected to the first drive shaft (23). The housing (1) is also provided with a plurality of spaced buckle plates (7), each buckle plate (7) having a through hole. The through holes of the plurality of buckle plates (7) are located on the same straight line, and the channel formed by the through holes of the plurality of buckle plates (7) is located between the first wheel (21) and the second wheel (22).

2. The TIG welding wire feeding device according to claim 1, characterized in that, The drive unit (3) is connected to the first wheel (21), and the distance between the second wheel (22) and the first wheel (21) is adjustable.

3. The TIG welding wire feeding device according to claim 1, characterized in that, The elastic element (5) is a snap-fit ​​spring.

4. The TIG welding wire feeding device according to claim 1, characterized in that, The driving component (3) is a motor, the output end of which is connected to the first transmission shaft (23). The pressure sensing switch (4) is connected to the motor to adjust the speed of the motor by the magnitude of the pressing pressure.

5. The TIG welding wire feeding device according to claim 1, characterized in that, A power supply component (8) is also provided, the power supply component (8) including a power supply (81) connected to the drive unit (3).

6. The TIG welding wire feeding device according to claim 2, characterized in that, Both the first wheel (21) and the second wheel (22) have clamping grooves on their outer peripheral surfaces.

7. The TIG welding wire feeding device according to claim 2, characterized in that, The adjustment distance between the first wheel (21) and the second wheel (22) is 2-5mm.

8. The TIG welding wire feeding device according to claim 1, characterized in that, The housing (1) includes a wiring section (11) and a handheld part (12). The wiring section (11) and the handheld part (12) are arranged in a T-shape. The through hole is provided in the wiring section (11), and the pressure sensing switch (4) is provided in the handheld part (12).

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