TIG welding wire feeder

Abstract

The invention relates to a TIG welding wire feeder, and belongs to the technical field of welding equipment. Comprising a grip, the grip comprises a framework and an elastic pressing piece, the framework is sleeved with the elastic pressing piece, an air chamber is defined between the elastic pressing piece and the framework, and a wire feeding through hole is formed in the framework in a penetrating mode; the wire feeding device is arranged at the top end of the framework, and the wire feeding device is used for being connected with a welding wire so that the welding wire can penetrate through the wire feeding through hole to be conveyed to the tail end of the framework; one end of the detection device is connected with the air chamber, the other end of the detection device is connected with the wire feeding device, and the detection device is used for detecting the air pressure variation in the air chamber, converting the air pressure variation into a driving signal and transmitting the driving signal to the wire feeding device. An operator can change the wire feeding speed more visually by controlling the grip strength in a handheld mode, and the working efficiency and the welding quality are improved.

Description

Technical Field

[0001] The present application relates to the technical field of welding equipment, and in particular to a TIG welding wire feeder. Background Art

[0002] TIG welding, a non-metallic arc welding technology, is widely used in the automotive, aerospace, and precision instrument industries due to its aesthetically pleasing weld seam, high weld quality, and compatibility with a wide range of metal materials. However, despite its significant advantages, TIG welding still faces numerous technical bottlenecks in its practical application, particularly in the wire feeding process during manual TIG welding.

[0003] Manual TIG welding requires the operator to simultaneously control both the welding torch and the filler wire. Typically, the operator holds the torch with one hand to control the arc position while manually feeding the filler wire with the other. This operation requires exceptional hand-eye coordination, quick reaction times, and extensive welding experience.

[0004] However, in reality, novice operators often struggle to master the wire feeding rhythm, resulting in defects such as poor weld formation, insufficient penetration, and slag inclusions. Furthermore, the operator must constantly monitor the weld pool and adjust the wire feed speed during welding. Prolonged operation can lead to fatigue, further compromising weld quality and stability. Summary of the Invention

[0005] The present application provides a TIG welding wire feeder, which can solve the problem in related technologies that the operator needs to frequently switch his attention during the wire feeding process, paying attention to both the arc state and the position of the welding wire, which increases the difficulty of operation. Especially for non-professionals, there is a lack of intuitive wire feeding control means, making it difficult to achieve efficient and high-quality welding.

[0006] An embodiment of the present application provides a TIG welding wire feeder, comprising: a handle, which includes a frame and an elastic pressing piece, the elastic pressing piece is mounted on the frame, an air chamber is formed between the elastic pressing piece and the frame, and a wire feeding through hole is penetrated by the frame; a wire feeding device, which is arranged at the top of the frame, the wire feeding device is used to connect with the welding wire to convey the welding wire through the wire feeding through hole to the end of the frame; a detection device, one end of which is connected to the air chamber and the other end is connected to the wire feeding device, the detection device is used to detect the change in air pressure in the air chamber, and convert the change in air pressure into a driving signal to transmit to the wire feeding device.

[0007] In some embodiments, the elastic pressing member includes an airbag wall, the airbag wall is sleeved on the frame, and the air chamber is formed between the airbag wall and the frame.

[0008] In some embodiments, the wire feeding device includes: a bracket, which is connected to the top of the skeleton; a wire feeding wheel, which is rotatably connected to the bracket, and the wire feeding wheel is provided with a first groove; a wire pressing wheel, which is rotatably connected to the bracket, and the wire pressing wheel is provided with a second groove, the first groove is aligned with the second groove, and a wire feeding channel is formed between the first groove and the second groove; a driving mechanism, which is arranged on the bracket and connected to the detection device, and the driving mechanism is used to receive the driving signal transmitted by the detection device, and adjust the speed according to the driving signal to drive the wire pressing wheel to rotate.

[0009] In some embodiments, the driving mechanism includes: a driving motor, which is mounted on the bracket, and the detection device is connected to the driving motor; a main gear, which is connected to the output shaft of the driving motor; a sub-gear, which is engaged with the main gear, and a transmission shaft is provided on the sub-gear, and the transmission shaft is connected to the wire feeding wheel at one end away from the sub-gear.

[0010] In some embodiments, the detection device includes: an air pressure sensor, which is connected to the air chamber, and the air pressure sensor is used to convert the air pressure detected from the air chamber into an electrical signal; a voltage regulating circuit, one end of which is connected to the air pressure sensor and the other end is connected to the drive motor, and the voltage regulating circuit is used to receive the electrical signal transmitted by the air pressure sensor and adjust the electrical signal to output as a voltage to be transmitted to the drive motor; a DC power supply, which is respectively connected to the air pressure sensor and the voltage regulating circuit, and the DC power supply is used to provide DC voltage to the air pressure sensor and the voltage regulating circuit.

[0011] In some embodiments, the first groove is arranged in an arc shape, and the second groove is arranged in a V shape.

[0012] In some embodiments, an adjustment component is provided on the bracket, and the adjustment component is connected to the wire pressing wheel. The adjustment component is used to adjust the distance between the wire pressing wheel and the wire feeding wheel to change the size of the wire feeding channel.

[0013] In some embodiments, the bracket includes: a base plate, which is connected to the skeleton; a first frame, and the wire feeding wheel is rotatably connected to the first frame; a second frame, which includes a fixed part and a movable part, the fixed part is fixedly connected to the base plate, the movable part is movably connected to the fixed part, and the wire pressing wheel is rotatably connected to the movable part; a third frame, one end of the adjustment component is connected to the third frame, and the other end is connected to the movable part, and the adjustment component is used to drive the movable part to move on the fixed part.

[0014] In some embodiments, the adjustment assembly includes: a connecting shaft, one end of which is fixedly connected to the movable part; an adjusting button, one end of which is sleeved on the connecting shaft and the other end is threadedly engaged with the third frame; a compression spring, which is sleeved on the connecting shaft and is located between the adjusting button and the movable part.

[0015] In some embodiments, the air chamber is provided with an inflation port.

[0016] The beneficial effects of the technical solutions provided in the embodiments of the present application include: The embodiment of the present application provides a TIG welding wire feeder. During operation, the operator presses the elastic pressing piece according to the gripping force by holding the handle. When the elastic pressing piece is deformed, the air chamber is squeezed, causing the air pressure in the air chamber to change. The change in air pressure in the air chamber is then detected by a detection device, and the change in air pressure is converted into a driving signal and transmitted to the wire feeding device. After receiving the driving signal, the wire feeding device controls the welding wire to pass through the wire feeding through hole at a certain speed and to be delivered to the end of the skeleton for welding. During the overall operation, the operator can more intuitively change the wire feeding speed by controlling the gripping force by holding the handle. In addition, the cooperation between the wire feeding device and the detection device allows the operator to frequently switch his attention, which effectively improves work efficiency and welding quality. The detection device includes an air pressure sensor, a voltage regulating circuit, and a DC power supply. The DC power supply provides the power required for the air pressure sensor and the voltage regulating circuit to operate. The DC power supply is connected in parallel with the air pressure sensor and the voltage regulating circuit to ensure that both components can independently obtain stable voltage from the DC power supply. When the grip force changes, the air pressure in the air chamber changes. After the air pressure sensor detects the change in air pressure, it converts the change in air pressure into an electrical signal and then outputs the signal to the voltage regulating circuit. The voltage regulating circuit adjusts the output value according to the strength of the electrical signal transmitted by the air pressure sensor. The output value is the driving voltage of the drive motor, which realizes the adjustment of the driving motor speed. In particular, when the voltage output value is , the speed of the drive motor is , and the wire feeding stops. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present application. For ordinary operators in this field, other drawings can be obtained based on these drawings without any creative work.

[0018] Figure 1 A schematic diagram of the overall structure provided for an embodiment of the present application; Figure 2 A schematic cross-sectional view of an embodiment of the present application; Figure 3A schematic diagram showing a wire feeding device and an adjustment assembly provided in an embodiment of the present application; Figure 4 A schematic diagram showing a wire feed wheel and a wire pressing wheel provided in an embodiment of the present application; In the figure: 1. handle; 10. frame; 100. locking nut; 11. elastic pressing member; 12. welding wire nozzle; 2. air chamber; 3. wire feeding hole; 30. welding wire; 4. wire feeding device; 40. bracket; 400. bottom plate; 401. first frame; 402. second frame; 4020. fixed part; 4021. movable part; 4022. slide; 403. third frame; 404. fourth frame; 41. Wire feeding wheel; 410, first groove; 42, wire pressing wheel; 420, second groove; 43, driving mechanism; 430, driving motor; 431, main gear; 432, sub-gear; 4320, transmission shaft; 50, air pressure sensor; 51, voltage regulating circuit; 52, DC power supply; 6, wire feeding channel; 7, adjusting component; 70, connecting shaft; 71, adjusting button; 72, compression spring; 8, inflation port; 9, sensor interface. DETAILED DESCRIPTION

[0019] In order to help those skilled in the art better understand the present invention, the following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary operators in this field without creative work are within the scope of protection of this application.

[0020] An embodiment of the present application provides a TIG welding wire feeder, which can solve the problem in related technologies that the operator needs to frequently switch his attention during the wire feeding process, paying attention to both the arc state and the position of the welding wire, which increases the difficulty of operation. In particular, for non-professionals, there is a lack of intuitive wire feeding control means, making it difficult to achieve efficient and high-quality welding.

[0021] See also Figures 1 to 4As shown, an embodiment of the present application provides a TIG welding wire feeder, comprising a handle 1, a wire feeding device 4, and a detection device. The handle 1 comprises a frame 10 and an elastic pressing member 11, the frame 10 is arranged in a circular axis, and the elastic pressing member 11 is mounted on the frame 10, so that an air chamber 2 is formed between the elastic pressing member 11 and the frame 10, and an air filling port 8 is provided on the air chamber 2, through which an air pressure within a suitable range can be injected into the air chamber 2. Further, in order to achieve wire feeding, a wire feeding through hole 3 is provided through the frame 10, and then the wire feeding device 4 is arranged at the top of the frame 10. The wire feeding device 4 is used to connect with the welding wire 30 to convey the welding wire 30 through the wire feeding through hole 3 to the end of the frame 10, and the detection device is connected at one end to the air chamber 2 and at the other end to the wire feeding device 4. The detection device is used to detect the change in air pressure in the air chamber 2 and convert the change in air pressure into a driving signal to be transmitted to the wire feeding device 4. Specifically, a sensing interface 9 is provided on the air chamber 2 , and the air chamber 2 is connected to the detection device at the sensing interface 9 through a wiring harness.

[0022] During specific operation, the operator only needs to hold the handle 1 firmly with his hand and flexibly adjust the grip strength according to the required wire feeding speed. When the finger applies pressure to press the elastic pressing member 11, the elastic pressing member 11 will deform. After the elastic pressing member 11 is deformed, it will directly exert an extrusion effect on the air chamber 2. As a relatively closed space with a certain degree of elasticity, the air chamber 2 is compressed when it is squeezed by an external force, and the air pressure changes accordingly. This change in air pressure is closely related to the degree of deformation of the elastic pressing member 11, and the degree of deformation of the elastic pressing member 11 is directly dependent on the grip strength of the operator's hand. In other words, by controlling the grip strength, the operator can accurately adjust the change in air pressure in the air chamber 2. At this time, the detection device can accurately detect the tiny change in air pressure in the air chamber 2 in real time and convert the change in air pressure into a dynamic signal. This conversion process is fast and accurate, ensuring that the drive signal can truly reflect the wire feeding speed desired by the operator through the grip strength. Therefore, the drive signal is then quickly transmitted to the wire feeding device 4, which, as the entire actuator, will start immediately after receiving the drive signal. According to the information carried by the drive signal, the wire feeding speed is accurately adjusted, thereby controlling the welding wire 30 to pass through the wire feeding hole 3 smoothly and continuously at the specific speed expected by the operator, and accurately delivered to the end of the skeleton 10. At the end of the skeleton 10, a welding wire nozzle 12 is also connected to the wire feeding hole 3, thereby providing a stable and reliable supply of welding wire 30 for the welding operation. The efficient collaboration between the wire feeding device 4 and the detection device effectively reduces the operator's attention distraction during the operation process, and realizes the operator's intuitive and convenient control of the wire feeding speed.

[0023] In this application, the elastic pressure member 11 comprises an airbag wall, which is sheathed onto the frame 10, with the air chamber 2 formed between the airbag wall and the frame 10. The airbag wall has excellent tensile strength, capable of withstanding significant pressure during inflation. It also exhibits excellent wear resistance, maintaining stability even in complex operating environments. Therefore, as part of the grip 1, particularly when used as a handheld device, the airbag wall exhibits a long lifespan, and its sealing and deformation capabilities are sufficient to accommodate use under injection and pressure conditions.

[0024] In the present application, the wire feeding device 4 includes a bracket 40 , a wire feeding wheel 41 , a wire pressing wheel 42 and a driving mechanism 43 . The bracket 40 is connected to the top of the skeleton 10 by threaded cooperation with the skeleton 10 by setting a threaded section on the skeleton 10; the wire feeding wheel 41 is rotatably connected to the bracket 40 through a bearing, and the wire feeding wheel 41 is provided with a first groove 410, and the first groove 410 is arranged in a circular arc shape; the wire pressing wheel 42 is rotatably connected to the bracket 40, and the wire pressing wheel 42 is provided with a second groove 420, the first groove 410 is aligned with the second groove 420, and the second groove 420 is arranged in a V shape, and a wire feeding channel 6 is formed between the first groove 410 and the second groove 420, and the welding wire 30 is restricted in the wire feeding channel 6 by the wire feeding wheel 41 and the wire pressing wheel 42, specifically, the welding wire 30 is stuck in the wire feeding channel 6 by the restriction of the first groove 410 and the second groove 420; finally, the driving mechanism 43 is set on the bracket 40 and connected to the detection device, and the driving mechanism 43 is used to receive the driving signal transmitted by the detection device and adjust the speed according to the driving signal to drive the wire pressing wheel 42 to rotate.

[0025] Therefore, after the driving mechanism 43 receives the driving signal, it will start immediately and accurately adjust the control speed of the wire feeding wheel 41. At that time, the welding wire 30 located in the wire feeding channel 6 will have a displacement trend in the same direction under the rotation of the wire feeding wheel 41, that is, it will pass through the wire feeding through hole 3 downward, and in the displacement process, the arc-shaped groove provides a smooth guiding effect for the welding wire 30. When the welding wire 30 moves in the arc-shaped groove, its motion trajectory will change along the shape of the arc-shaped groove. The motion process is relatively smooth without obvious mutations or jams. In addition, the V-shaped groove on the wire pressing wheel 42 will make the welding wire 30 tend to move in a straight line along the center line of the V-shaped groove during the movement. Due to the symmetry of the V-shaped groove, the force applied to the welding wire 30 in the V-shaped groove will make its motion direction relatively fixed, reducing the deviation of the rod in other directions. The wire pressing wheel 42 provides abutment force, effectively fixing the position of the welding wire 30, and avoiding the welding wire 30 from moving or deviating. This enables the present application to well control the welding wire 30 to pass through the wire feeding hole 3 smoothly and continuously at the specific speed expected by the operator, and accurately deliver it to the end of the skeleton 10, providing a stable and reliable supply of welding wire 30 for the welding operation.

[0026] In the present application, the driving mechanism 43 is specifically configured to include a driving motor 430, a main gear 431, and a sub-gear 432. The driving motor 430 is mounted on the bracket 40, and the detection device is connected to the driving motor 430; the main gear 431 is connected to the output shaft of the driving motor 430; the sub-gear 432 is meshed with the main gear 431, and a transmission shaft 4320 is provided on the sub-gear 432, and the end of the transmission shaft 4320 away from the sub-gear 432 is connected to the wire feed wheel 41. After the pressure change signal obtained by the detection device is converted into a driving signal, it can be fed back to the driving motor 430 for corresponding control. The power generated by the driving motor 430 can be efficiently and stably transmitted from its output shaft to the main gear 431, driving the main gear 431 to rotate. The main gear 431 meshes with the sub-gear 432 and rotates accordingly, and then drives the wire feed wheel 41 to rotate under the action of the transmission shaft 4320. Gear transmission has the advantages of stable transmission ratio, high transmission efficiency, and reliable operation, which can ensure that the power output by the drive motor 430 is accurately and effectively transmitted to the wire feed wheel 41. Automated operation effectively reduces the operator's distraction and ensures reliable operation.

[0027] In this application, the detection device includes an air pressure sensor 50, a voltage regulator circuit 51, and a DC power supply 52. ​​The air pressure sensor 50 is connected to the air chamber 2 via a wire harness. The air pressure sensor 50 is used to convert the air pressure detected from the air chamber 2 into an electrical signal. The voltage regulator circuit 51 is connected to the air pressure sensor 50 at one end and to the drive motor 430 at the other end via a wiring harness. The voltage regulator circuit 51 receives the electrical signal transmitted by the air pressure sensor 50 and adjusts the electrical signal to output a voltage for transmission to the drive motor 430. The DC power supply 52 is also connected to the air pressure sensor 50 and the voltage regulator circuit 51 via a wiring harness. The DC power supply 52 is used to provide a DC voltage to the air pressure sensor 50 and the voltage regulator circuit 51. The DC power supply 52 provides the electrical energy required for the air pressure sensor 50 and the voltage regulator circuit 51 to operate. The DC power supply 52 is connected in parallel with the air pressure sensor 50 and the voltage regulator circuit 51 to ensure that both components can independently obtain a stable voltage from the DC power supply 52. When grip force changes, the air pressure in air chamber 2 changes. Upon detecting the change in air pressure, air pressure sensor 50 converts the change in air pressure into an electrical signal, which is then transmitted to voltage regulator circuit 51. Voltage regulator circuit 51 adjusts its output value based on the strength of the electrical signal transmitted by air pressure sensor 50. This output value serves as the drive voltage for drive motor 430, thereby regulating the speed of drive motor 430. Specifically, when the voltage output value is 0, the speed of drive motor 430 is 0, and wire feeding stops. Air pressure sensor 50 accurately senses the change in air pressure within air chamber 2 caused by grip force changes and converts it into an electrical signal. Voltage regulator circuit 51 adjusts its output voltage in real time based on the strength of this signal, ensuring that the drive voltage for drive motor 430 precisely corresponds to the grip force. This approach more accurately regulates the speed of drive motor 430, reduces control deviations caused by external interference or system errors, and thus improves wire feeding speed control accuracy. Regardless of whether the grip force changes slightly or significantly, the air pressure sensor 50 can capture the change in time and feed it back to the voltage regulating circuit 51, so that the voltage regulating circuit 51 can flexibly adjust the output voltage to ensure that the drive motor 430 can operate stably under various grip force conditions.

[0028] In the present application, an adjustment assembly 7 is further provided on the bracket 40, which is connected to the wire pressing wheel 42. The adjustment assembly 7 is used to adjust the distance between the wire pressing wheel 42 and the wire feeding wheel 41 to change the size of the wire feeding channel 6. This allows welding wires 30 of different sizes and types to pass between the wire feeding wheel 41 and the wire pressing wheel 42, thus adapting to a wide range of applications.

[0029] Since the wire feeding device 4 and the adjustment assembly 7 need to be arranged on the bracket 40, and the bracket 40 also needs to be connected to the frame 10, the bracket 40 is provided with a reasonable layout, including a base plate 400, a first frame body 401, and a second and third frame bodies 403. The base plate 400 is connected to the frame 10 by threaded fitting, and in order to ensure a firm connection between the frame 10 and the base plate 400, a locking nut 100 is also connected to the bottom of the base plate 400. When the locking nut 100 is tightened, the connection strength between the frame 10 and the base plate 400 can be strengthened. Then the wire feeding wheel 41 is rotatably connected to the first frame body 401. The first frame body 401 is provided at one end of the base plate 400 and is located on both sides thereof. The wire feeding wheel 41 is rotatably connected to the support plates through bearings. The second frame body 402 includes a fixed portion 4020 and a movable portion 4021. The fixed portion 4020 is fixedly connected to the base plate 400. The fixed portion 4020 is provided at the other end of the base plate 400 and is located on both sides thereof. Plate, the movable part 4021 is movably connected to the fixed part 4020, and the movable part 4021 is U-shaped. The movable part 4021 moves between the two support plates of the fixed part 4020, and the wire pressing wheel 42 is rotatably connected to the movable part 4021. Specifically, the wire pressing wheel 42 is connected to the transmission shaft 4320 and is passed through the movable part 4021. The bearing is connected between the wire pressing wheel 42 and the transmission shaft 4320. In addition, slide grooves 4022 are provided on both sides of the fixed part 4020, and the two ends of the transmission shaft 4320 are movably connected in the slide grooves 4022; one end of the adjusting component 7 is connected to the third frame 403, and the other end is connected to the movable part 4021. The adjusting component 7 is used to drive the movable part 4021 to move on the fixed part 4020.

[0030] Therefore, by designing the base plate 400, the first bracket 40, the second bracket 40, and the third bracket 40 to form the bracket 40, the wire feeder 4 and the adjustment assembly 7 are arranged rationally on the bracket 40, without occupying a large amount of space, thereby enabling the operation of each component within a limited space. To this end, a fourth frame 404 is provided on the bracket 40. The output shaft of the drive motor 430 passes through the fourth frame 404 and is connected to the main gear 431. The main gear 431 and the sub-gear 432 mesh and rotate between the first bracket 40 and the fourth frame 404.

[0031] In the present application, the adjustment assembly 7 includes a connecting shaft 70, an adjusting button 71, and a compression spring 72. One end of the connecting shaft 70 is fixedly connected to the movable portion 4021. Then, one end of the adjusting button 71 is sleeved onto the connecting shaft 70, and the other end is threadedly engaged with the third frame 403. The compression spring 72 is sleeved onto the connecting shaft 70 and located between the adjusting button 71 and the movable portion 4021. During use, the adjusting button 71 is rotated, and the adjusting button 71 is displaced along the connecting shaft 70. When the adjusting button 71 is displaced, it presses against the press-fit, causing the compression spring 72 to compress and deform. At this time, the compression spring 72 presses against the movable portion 4021, causing the movable portion 4021 to further displace. This type of adjustment can accurately achieve control of minute size changes and effectively ensure the size of the adjustment channel of the wire feeding channel 6.

[0032] The operating principle of the present embodiment is as follows: the operator firmly grasps the handle 1 and flexibly adjusts the grip strength based on the desired wire feed speed. When the finger applies pressure on the airbag wall, the wall deforms, which directly squeezes the air chamber 2. As a relatively closed and elastic space, air chamber 2 is compressed when subjected to external pressure, causing the gas inside to change, resulting in a change in air pressure. This change in air pressure is closely related to the degree of deformation of the airbag wall, which in turn directly depends on the grip strength of the operator's hand. In other words, by controlling the grip strength, the operator can precisely adjust the change in air pressure within air chamber 2. Upon detecting the change in air pressure, the air pressure sensor 50 converts the change in air pressure into an electrical signal, which is then transmitted to the voltage regulator circuit 51. The voltage regulator circuit 51 adjusts its output value based on the strength of the electrical signal transmitted by the air pressure sensor 50. This output value serves as the drive voltage for the drive motor 430, thereby regulating the speed of the drive motor 430. This conversion process is fast and accurate, ensuring that the drive signal can truly reflect the wire feeding speed expected by the operator through grip force. That is, when the drive signal is quickly transmitted to the wire feeding drive motor 430, the drive motor 430, as the entire actuator, will start immediately after receiving the drive signal. According to the information carried by the driving signal, it is stably transmitted to the main gear 431, driving the main gear 431 to rotate, and the main gear 431 engages with the sub-gear 432 and rotates accordingly, and then drives the wire feeding wheel 41 to rotate under the action of the transmission shaft 4320. The arc-shaped groove of the wire feeding wheel 41 provides a smooth guide for the welding wire 30. When the welding wire 30 moves in the arc-shaped groove, its motion trajectory will change along the shape of the arc-shaped groove. The motion process is relatively smooth without obvious mutations or jams. In addition, the V-shaped groove on the wire pressing wheel 42 will make the welding wire 30 tend to move in a straight line along the center line of the V-shaped groove during movement, and due to the symmetry of the V-shaped groove, the force applied to the welding wire 30 in the V-shaped groove will make its motion direction relatively fixed, reducing the deviation of the rod in other directions. The wire pressing wheel 42 provides abutment force, effectively fixing the position of the welding wire 30, and avoiding the welding wire 30 from moving or deviating. This allows the present application to effectively control the welding wire 30 to smoothly and continuously pass through the wire feed hole 3 at the specific speed desired by the operator, and accurately deliver it to the end of the frame 10, providing a stable and reliable supply of welding wire 30 for the welding operation. The efficient collaboration between the wire feeder 4 and the detection device effectively reduces the operator's attention distraction during operation and enables the operator to intuitively and conveniently control the wire feed speed.In addition, if the sizes of the welding wires 30 replaced before and after are inconsistent, the adjusting button 71 can be rotated, and the adjusting button 71 will be displaced along the connecting shaft 70. When the adjusting button 71 is displaced, it will press the press-fit, causing the compression spring 72 to be compressed and deformed. At that time, the compression spring 72 will press the movable part 4021, causing the movable part 4021 to further displace. This type of adjustment can accurately achieve the control of small size changes and effectively ensure the size of the adjustment channel of the wire feeding channel 6.

[0033] In the description of this application, it should be noted that the terms "upper" and "lower" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on this application. Unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or an indirect connection through an intermediate medium, or it can be internal communication between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in this application can be understood according to the specific circumstances.

[0034] It should be noted that, in this application, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device comprising a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, an element defined by the sentence "comprising a ..." does not exclude the presence of other identical elements in the process, method, article or device comprising the element.

[0035] The foregoing is merely a list of specific embodiments of the present application, intended to enable those skilled in the art to understand or implement the present application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present application. Therefore, the present application is not limited to the embodiments shown herein, but is intended to conform to the broadest scope consistent with the principles and novel features of the present application.

Claims

1. A TIG welding wire feeder, characterized in that: It includes: A grip (1) comprising a frame (10) and an elastic pressing piece (11), wherein the elastic pressing piece (11) is sleeved on the frame (10), an air chamber (2) is formed between the elastic pressing piece (11) and the frame (10), and a wire feeding hole (3) is provided through the frame (10); A wire feeding device (4) is provided at the top end of the skeleton (10), and the wire feeding device (4) is used to connect with the welding wire (30) so as to feed the welding wire (30) through the wire feeding hole (3) to the end of the skeleton (10); A detection device, one end of which is connected to the air chamber (2) and the other end of which is connected to the wire feeding device (4), wherein the detection device is used to detect the air pressure change in the air chamber (2) and convert the air pressure change into a driving signal to be transmitted to the wire feeding device (4).

2. A TIG welding wire feeder according to claim 1, characterized in that: The elastic pressing member (11) comprises an airbag wall, the airbag wall is sleeved on the frame (10), and the air chamber (2) is formed between the airbag wall and the frame (10).

3. A TIG welding wire feeder according to claim 1, characterized in that: The wire feeding device (4) comprises: a bracket (40) connected to the top end of the frame (10); A wire feeding wheel (41) is rotatably connected to the bracket (40), and a first groove (410) is provided on the wire feeding wheel (41); a wire pressing wheel (42) rotatably connected to the bracket (40), and a second groove (420) is provided on the wire pressing wheel (42), the first groove (410) is aligned with the second groove (420), and a wire feeding channel (6) is formed between the first groove (410) and the second groove (420); A driving mechanism (43) is provided on the bracket (40) and connected to the detection device, wherein the driving mechanism (43) is used to receive a driving signal transmitted by the detection device and adjust the rotation speed according to the driving signal to drive the wire pressing wheel (42) to rotate.

4. A TIG welding wire feeder according to claim 3, characterized in that: The driving mechanism (43) comprises: A driving motor (430) is mounted on the bracket (40), and the detection device is connected to the driving motor (430); A main gear (431) connected to the output shaft of the drive motor (430); A secondary gear (432) is meshed with the main gear (431), and a transmission shaft (4320) is provided on the secondary gear (432), and one end of the transmission shaft (4320) away from the secondary gear (432) is connected to the wire feeding wheel (41).

5. A TIG welding wire feeder according to claim 4, characterized in that: The detection device comprises: An air pressure sensor (50) connected to the air chamber (2), the air pressure sensor (50) being used to convert the air pressure detected from the air chamber (2) into an electrical signal; a voltage regulating circuit (51), one end of which is connected to the air pressure sensor (50) and the other end of which is connected to the drive motor (430), wherein the voltage regulating circuit (51) is used to receive the electrical signal transmitted by the air pressure sensor (50) and adjust the electrical signal to output as a voltage to be transmitted to the drive motor (430); A DC power supply (52) is connected to the air pressure sensor (50) and the voltage regulating circuit (51), respectively, and the DC power supply (52) is used to provide a DC voltage to the air pressure sensor (50) and the voltage regulating circuit (51).

6. A TIG welding wire feeder according to claim 3, characterized in that: The first groove (410) is arranged in an arc shape, and the second groove (420) is arranged in a V shape.

7. The TIG welding wire feeder according to claim 3, characterized in that: An adjusting component (7) is provided on the bracket (40), and the adjusting component (7) is connected to the wire pressing wheel (42). The adjusting component (7) is used to adjust the distance between the wire pressing wheel (42) and the wire feeding wheel (41) to change the size of the wire feeding channel (6).

8. A TIG welding wire feeder according to claim 7, characterized in that: The bracket (40) comprises: A bottom plate (400) connected to the frame (10); A first frame (401), the wire feeding wheel (41) being rotatably connected to the first frame (401); A second frame (402) comprises a fixed portion (4020) and a movable portion (4021), wherein the fixed portion (4020) is fixedly connected to the bottom plate (400), the movable portion (4021) is movably connected to the fixed portion (4020), and the pressing wheel (42) is rotatably connected to the movable portion (4021); The third frame (403), one end of the adjustment component (7) is connected to the third frame (403), and the other end is connected to the movable part (4021), and the adjustment component (7) is used to drive the movable part (4021) to move on the fixed part (4020).

9. A TIG welding wire feeder according to claim 8, characterized in that: The regulating component (7) comprises: A connecting shaft (70), one end of which is fixedly connected to the movable portion (4021); An adjusting button (71), one end of which is sleeved on the connecting shaft (70) and the other end of which is threadably engaged with the third frame (403); A compression spring (72) is sleeved on the connecting shaft (70) and is located between the adjusting button (71) and the movable portion (4021).

10. The TIG welding wire feeder according to claim 1, characterized in that: The air chamber (2) is provided with an air filling port (8).

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