A wire feeding pen for argon arc welding TIG welding

Abstract

This patent introduces a wire feeder for TIG welding, including a wire feeder body, a porcelain nozzle, a first wire feed guide tube, a pressing wire feed mechanism, a damping check device and a second wire feed guide tube; the wire feeder body is a hollow rod-shaped structure, and a welding wire mounting hole is arranged at the upper end; the porcelain nozzle is arranged at the lower end of the wire feeder body; the first wire feed guide tube is arranged inside the upper end of the wire feeder body, the pressing wire feed mechanism is arranged below the first wire feed guide tube inside the wire feeder body, and the damping check device is arranged at the lower end inside the wire feeder body; the second wire feed guide tube is arranged between the pressing wire feed mechanism and the damping check device inside the wire feeder body. The invention has a simple structure, simple operation and convenient carrying; it can effectively control the wire feeding length, and it is convenient to control the wire feeding angle, which reduces the difficulty of operation for operators, thereby ensuring welding quality and improving welding efficiency.

Description

Technical Field

[0001] The invention belongs to the technical field of welding tools, and in particular relates to a welding wire feeding pen for argon arc welding (TIG) welding. Background Art

[0002] TIG welding, argon arc welding, manual welding of non-melting electrode argon arc welding. It can weld stainless steel, high-temperature alloys, titanium alloys, aluminum alloys and other materials, and is widely used in the welding of pressure vessels, pipelines, etc. It is flexible to operate and has high weld quality, which can obtain high-quality welding quality and appearance. The argon arc welding primer process has been tested by non-destructive testing and radiographic flaw detection, and the weld level is above level II. When manual TIG welding, the welding arc molten pool needs to be continuously filled with welding wire, and the length of the welding wire is about 1000mm and the diameter is Φ1 mm to Φ4mm. Due to the limitations of various working conditions, during welding, the welder uses his fingers to continuously rub the welding wire and send it to the arc weld pool of the argon arc welding gun head. When welding, the welder wears welding gloves, the welding wire is thin, the operation is inconvenient, it is not easy to accurately, evenly and stably feed the wire, and it is not easy to ensure the welding quality and appearance. Summary of the invention

[0003] The purpose of the present invention is to overcome the shortcomings of the prior art and provide a wire feeding pen for argon arc welding (TIG) welding, which has a simple structure and is easy to operate. The welding wire can be accurately and evenly fed into the welding arc molten pool weld, and the angle, distance and position can be easily controlled; the welding efficiency can be improved and the welding quality can be guaranteed.

[0004] The technical solution adopted by the present invention is a wire feeder for TIG welding, comprising a wire feeder body, a porcelain nozzle, a first wire feed guide tube, a pressing wire feed mechanism, a damping check device and a second wire feed guide tube;

[0005] The wire feeding pen body is a hollow rod-shaped structure, and a welding wire installation hole is arranged at the upper end; a long strip-shaped notch is arranged on the outer edge of the wire feeding pen body along the length direction; a porcelain nozzle is arranged at the lower end of the wire feeding pen body; a first wire feeding guide tube is arranged inside the upper end of the wire feeding pen body, and a tube hole at the center of the first wire feeding guide tube is arranged as a funnel-shaped structure; the center of the tube hole corresponds to the center of the welding wire installation hole at the upper end of the wire feeding pen body;

[0006] The press wire feeding mechanism is arranged below the first wire feeding guide tube inside the wire feeding pen body, and includes a T-shaped press wire feeding button, a bar guide rail, a hinge pin, a spring and a retaining ring; the T-shaped press wire feeding button is divided into a horizontal rod and a vertical rod; the outer end of the horizontal rod extends out of the notch on the wire feeding pen body to form a press part of the T-shaped press wire feeding button, and the inner end of the horizontal rod is a V-shaped structure, and corresponding holes are arranged at both ends of the V-shaped structure; the inner end of the horizontal rod extends vertically downward along the bottom of the V-shaped structure to form a vertical rod with a V-shaped groove;

[0007] The upper end of the strip guide rail is provided with hinge holes corresponding to the holes at both ends of the V-shaped structure at the inner end of the horizontal rod of the T-shaped push wire feeding button, and the hinge nail passes through the hole and the hinge hole to hinge the upper end of the strip guide rail and the T-shaped push wire feeding button; a V-shaped guide groove opposite to the V-shaped groove opening is provided along the length direction on one side of the strip guide rail adjacent to the vertical rod of the T-shaped push wire feeding button, and the V-shaped groove and the V-shaped guide groove form a first welding wire clamping channel; a protrusion is provided on the outer side of the upper end of the strip guide rail, and the protrusion is lower than the horizontal rod of the T-shaped push wire feeding button;

[0008] The retaining ring is a cylindrical structure with a through hole in the center, and the retaining ring is fixed on the inner wall of the wire feeding pen body; the lower end of the strip guide rail extends into the through hole in the middle of the retaining ring; the spring sleeve is arranged on the outer side of the vertical rod of the T-shaped push wire feeding button and the strip guide rail, the upper end of the spring is arranged on the protrusion of the strip guide rail and the lower side of the horizontal rod of the T-shaped push wire feeding button, and the lower end of the spring is arranged on the end surface of the retaining ring;

[0009] The damping check device is arranged at the lower end of the wire feeding pen body; it comprises a support block and a V-shaped spring pressure sheet; one end of the support block is arranged on the inner wall of the lower end of the wire feeding pen body, and a V-shaped notch is arranged at the suspended end of the support block; one side of the V-shaped spring pressure sheet is connected to the inner wall of the wire feeding pen body, and the cross section of the suspended side is V-shaped, and the suspended side of the V-shaped spring pressure sheet is arranged corresponding to the V-shaped notch of the suspended end of the support block to form a second welding wire clamping channel;

[0010] The second wire feeding guide tube is arranged between the wire pressing and feeding mechanism and the damping and check device inside the wire feeding pen body; the outer edges at both ends of the second wire feeding guide tube are arranged on the inner wall of the wire feeding pen body; the center of the upper end of the second wire feeding guide tube is arranged as a funnel-shaped structure, and the center of the tube hole of the second wire feeding guide tube corresponds to the centers of the first welding wire clamping channel and the second welding wire clamping channel respectively.

[0011] Specifically, the welding wire installation hole, the axis of the first wire feeding guide tube, the center line of the first welding wire clamping channel, the center line of the retaining ring, and the center line of the second welding wire clamping channel all coincide with the center axis of the wire feeding pen body.

[0012] Specifically, a threaded portion is provided at the lower end of the wire feeding pen body, and the porcelain nozzle is provided at the lower end of the wire feeding pen body through the threaded portion.

[0013] Specifically, the second wire feeding duct is made of transparent material, which is convenient for observing the welding wire.

[0014] More specifically, a viewing window is provided on the outer edge of the wire feeding pen body at a position corresponding to the position of the second wire feeding guide tube, for observing the welding wire.

[0015] Specifically, a pen clip is arranged on the outer edge of the upper end of the wire feeding pen body, which is convenient for carrying.

[0016] Specifically, the length of the lower end of the bar guide rail extending into the through hole of the retaining ring does not exceed half of the length of the retaining ring.

[0017] When in use, insert the welding wire from the welding wire installation hole at the upper end of the wire feeding pen body into the first welding wire clamping channel; press the pressing part of the T-shaped wire feeding button extending out of the wire feeding pen body; since the upper end of the bar guide rail and the T-shaped wire feeding button are hingedly connected, the height difference between the protruding part at the upper end of the bar guide rail and the horizontal rod of the T-shaped wire feeding button causes a certain deformation amount to occur at the upper end of the spring, and there is a certain opening angle between the vertical rod of the T-shaped wire feeding button and the bar guide rail. When the pressing part is pressed, the opening angle between the vertical rod of the T-shaped wire feeding button and the bar guide rail disappears; tighten the welding wire and feed the wire downward; when the pressing part is released, the spring rebounds to the T-shaped wire feeding button. The pressing wire feed button and the bar guide return to the initial state; the pressing part is pressed and released continuously. Under the action and reaction force of the spring and the retaining ring, the T-shaped pressing wire feed button and the bar guide continuously clamp and feed the welding wire, and release the welding wire, so that the welding wire moves downward along the first welding wire clamping channel until it passes through the second welding wire clamping channel and passes through the porcelain nozzle; due to the elastic action force of the V-shaped spring pressure piece, pressure is exerted on the welding wire, so that the welding wire does not retract. According to welding needs, the pressing part of the T-shaped pressing wire feed button is pressed. The pressing stroke determines the length of the wire feeding. Continuous, paused and rapid pressing controls the wire feeding to continue feeding, stop feeding and feed quickly.

[0018] Due to the adoption of the above-mentioned technical solution, the present invention has the following advantages:

[0019] 1. Due to the articulation of the T-shaped wire feeding button and the bar guide rail and the setting of the protruding part of the bar guide rail, the T-shaped wire feeding button and the bar guide rail form a clamp-like structure to clamp the welding wire, so that the welding wire can be fed more smoothly in the wire feeding pen body;

[0020] 2. Since the lower end of the strip guide rail is arranged in the through hole in the middle of the retaining ring, the overall structure has a high degree of fit, ensuring the accuracy of wire feeding;

[0021] 3. The setting of the damping check device prevents the welding wire from retracting during the wire feeding process, thus ensuring the wire feeding stability;

[0022] 4. Due to the multi-part V-shaped structure of the first welding wire clamping channel and the second welding wire clamping channel, the welding wire feeding pen for argon arc welding TIG welding of this patent can meet the feeding of welding wires of various specifications, thereby increasing the scope of application and having high utilization rate;

[0023] 5. Due to the setting of the first wire feeding duct and the second wire feeding duct, the insertion and feeding of the welding wire are guided, which facilitates the smooth feeding of the welding wire and prevents the displacement of the welding wire;

[0024] 6. The patented argon arc welding TIG welding wire feeding pen has a simple structure, simple operation and is easy to carry; it can effectively control the wire feeding speed and conveniently control the wire feeding angle, which reduces the operating difficulty of the operator, thereby ensuring the welding quality and improving the welding efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a schematic diagram of the overall structure of this patent.

[0026] Figure 2 It is a schematic diagram of the internal structure of this patent.

[0027] Figure 3 Schematic diagram of the internal structure of this patent when the welding wire is not installed.

[0028] Figure 4 This is a schematic diagram of the first wire catheter of this patent.

[0029] Figure 5 It is a schematic diagram of the second wire catheter of this patent.

[0030] Figure 6 This is a schematic diagram of the installation of the patented T-shaped wire feed button and the hinge pin.

[0031] Figure 7 It is a schematic diagram of the strip guide rail of this patent.

[0032] Figure 8 It is a schematic diagram of the retaining ring of this patent.

[0033] Fig. 9 Schematic diagram of the support block of this patent.

[0034] Fig.10 It is a schematic diagram of the V-shaped spring pressure sheet of this patent.

[0035] In the figure: 1-welding wire, 2-wire feeding pen body, 21-pen clip, 22-notch, 23-window, 3-porcelain nozzle, 41-T-type push wire feeding button, 411-horizontal rod, 412-pressing part, 413-vertical rod, 414-V-shaped groove, 42-bar guide rail, 421-protrusion, 422-V-shaped guide groove, 43-hinge pin, 44-spring, 45-retaining ring, 51-support block, 511-V-shaped notch, 52-V-shaped spring pressure sheet, 6-first wire feeding guide tube, 7-second wire feeding guide tube. DETAILED DESCRIPTION

[0036] The present invention will be further explained below in conjunction with the accompanying drawings and embodiments, which should not be used to limit the protection scope of the present invention. The purpose of disclosing the present invention is to protect all technical improvements within the scope of the present invention.

[0037] Combined with Figure 1-10A wire feeder for TIG welding comprises a wire feeder body 2, a porcelain nozzle 3, a first wire feed guide tube 6, a pressing wire feed mechanism, a damping check device and a second wire feed guide tube 7.

[0038] The wire feeding pen body 2 is a hollow rod-shaped structure, and a welding wire mounting hole is arranged at the upper end; a long strip-shaped notch 22 is arranged on the outer edge of the wire feeding pen body 2 along the length direction, and a pen clip 21 is arranged on the outer edge on the side opposite to the notch 22; a threaded portion is arranged at the lower end of the wire feeding pen body 2, and a porcelain nozzle 3 is arranged on the lower end of the wire feeding pen body 2 through the threaded portion; a first wire feeding guide tube 6 is arranged inside the upper end of the wire feeding pen body 2, and a tube hole in the center of the first wire feeding guide tube 6 is arranged as a funnel-shaped structure, and the center of the tube hole corresponds to the center of the welding wire mounting hole at the upper end of the wire feeding pen body 2.

[0039] The wire feeding mechanism is arranged below the first wire feeding guide tube 6 inside the wire feeding pen body 2, and includes a T-shaped wire feeding button 41, a bar guide rail 42, a hinge pin 43, a spring 44 and a retaining ring 45; the T-shaped wire feeding button 41 is divided into a horizontal rod portion 411 and a vertical rod portion 413; the outer end of the horizontal rod portion 411 extends out of the notch 22 on the wire feeding pen body 2 to form a pressing portion 412 of the T-shaped wire feeding button 41, and the inner end of the horizontal rod portion 411 is a V-shaped structure, and corresponding holes are arranged at both ends of the V-shaped structure; the inner end of the horizontal rod portion 411 extends vertically downward along the bottom of the V-shaped structure to form a vertical rod portion 413 with a V-shaped groove 414.

[0040] The upper end of the strip guide rail 42 is provided with light holes corresponding to the holes at both ends of the V-shaped structure at the inner end of the horizontal rod 411 of the T-shaped push-wire feed button 41, and the hinge nail 43 passes through the hole and the light hole to hinge the upper end of the strip guide rail 42 and the T-shaped push-wire feed button 41; the strip guide rail 42 is provided with a V-shaped guide groove 422 opposite to the opening of the V-shaped groove 414 along the length direction on one side adjacent to the vertical rod 413 of the T-shaped push-wire feed button 41, and the V-shaped groove 414 and the V-shaped guide groove 422 form a first welding wire 1 clamping channel; a protrusion 421 is provided on the outer side of the upper end of the strip guide rail 42, and the protrusion 421 is arranged lower than the horizontal rod 411 of the T-shaped push-wire feed button 41.

[0041] The retaining ring 45 is a cylindrical structure with a through hole in the center, and the retaining ring 45 is fixed on the inner wall of the wire feeding pen body 2; the lower end of the strip guide rail 42 extends into the through hole in the middle of the retaining ring 45, and the length of the lower end of the strip guide rail 42 extending into the through hole of the retaining ring 45 does not exceed half of the length of the retaining ring 45; the spring 44 is sleeved on the outer side of the vertical rod 413 of the T-shaped push-wire feeding button 41 and the strip guide rail 42, the upper end of the spring 44 is mounted on the protrusion 421 of the strip guide rail 42 and the lower side of the horizontal rod 411 of the T-shaped push-wire feeding button 41, and the lower end of the spring 44 is arranged on the end face of the retaining ring 45.

[0042] The damping check device is arranged at the lower end of the wire feeding pen body 2; it includes a support block 51 and a V-shaped spring pressure piece 52; one end of the support block 51 is arranged on the inner wall of the lower end of the wire feeding pen body 2, and a V-shaped notch 511 is arranged at the suspended end of the support block 51; one side of the V-shaped spring pressure piece 52 is connected to the inner wall of the wire feeding pen body 2, and the cross-section of the suspended side is V-shaped, and the suspended side of the V-shaped spring pressure piece 52 is arranged corresponding to the V-shaped notch 511 of the suspended end of the support block 51, forming a clamping channel for the second welding wire 1.

[0043] The second wire feeding guide tube 7 is made of transparent material, and the second wire feeding guide tube 7 is arranged between the pressing wire feeding mechanism and the damping check device inside the wire feeding pen body 2; the outer edges of both ends of the second wire feeding guide tube 7 are arranged on the inner wall of the wire feeding pen body 2; the center of the upper end of the second wire feeding guide tube 7 is arranged as a funnel-shaped structure, and the center of the tube hole of the second wire feeding guide tube corresponds to the center of the first welding wire clamping channel and the second welding wire clamping channel respectively, and a window for observing the welding wire is arranged on the outer edge of the wire feeding pen body 2 corresponding to the position of the second wire feeding guide tube 7.

[0044] The welding wire installation hole, the axis of the first wire feeding guide tube 6, the center line of the first welding wire clamping channel, the center line of the retaining ring 45, and the center line of the second welding wire clamping channel all coincide with the center axis of the wire feeding pen body 2.

[0045] When in use, insert the welding wire 1 from the welding wire 1 mounting hole at the upper end of the wire feeding pen body 2 into the first welding wire 1 clamping channel; press the pressing portion 412 of the T-shaped wire feeding button 41 extending out of the wire feeding pen body 2; since the upper end of the bar guide rail 42 and the T-shaped wire feeding button 41 are hingedly connected, the height difference between the protruding portion 421 at the upper end of the bar guide rail 42 and the horizontal rod portion 411 of the T-shaped wire feeding button 41 causes a certain deformation to occur at the upper end of the spring 44, and a certain opening angle is formed between the vertical rod portion 413 of the T-shaped wire feeding button 41 and the bar guide rail 42. When the pressing portion 412 is pressed, the opening angle between the vertical rod portion 413 of the T-shaped wire feeding button 41 and the bar guide rail 42 disappears; tighten the welding wire 1 and feed the wire downward; when the pressing portion 41 is released, 2, the spring 44 rebounds the T-shaped wire-feeding button 41 and the strip guide 42 to the initial state; the pressing part 412 is continuously pressed and released, and under the action and reaction force of the spring 44 and the retaining ring 45, the T-shaped wire-feeding button 41 and the strip guide 42 continuously clamp and feed the wire and release the welding wire 1, so that the welding wire 1 moves downward along the first welding wire 1 clamping channel until it passes through the second welding wire 1 clamping channel and passes through the porcelain nozzle 3; due to the elastic action force of the V-shaped spring pressure piece 52, pressure is exerted on the welding wire 1, so that the welding wire 1 does not retract. According to welding needs, the pressing part 412 of the T-shaped wire-feeding button 41 is pressed. The pressing stroke determines the length of the wire feeding. Continuous, paused, and rapid pressing controls the wire feeding to continue feeding, stop feeding, and feed quickly.

[0046] Parts of the present invention not described in detail are prior art.

[0047] The embodiments selected herein for the purpose of disclosing the invention are considered appropriate at the moment, but it should be understood that the present invention is intended to include all changes and modifications of the embodiments that fall within the scope of the present concept and invention.

Claims

1. A wire feeder for TIG welding, characterized in that: It includes a wire feeding pen body, a porcelain nozzle, a first wire feeding guide tube, a pressing wire feeding mechanism, a damping check device and a second wire feeding guide tube; The wire feeding pen body is a hollow rod-shaped structure, and a welding wire installation hole is arranged at the upper end; a long strip-shaped notch is arranged on the outer edge of the wire feeding pen body along the length direction; a porcelain nozzle is arranged at the lower end of the wire feeding pen body; a first wire feeding guide tube is arranged inside the upper end of the wire feeding pen body, and a tube hole at the center of the first wire feeding guide tube is arranged as a funnel-shaped structure; the center of the tube hole corresponds to the center of the welding wire installation hole at the upper end of the wire feeding pen body; The press wire feeding mechanism is arranged below the first wire feeding guide tube inside the wire feeding pen body, and includes a T-shaped press wire feeding button, a bar guide rail, a hinge pin, a spring and a retaining ring; the T-shaped press wire feeding button is divided into a horizontal rod and a vertical rod; the outer end of the horizontal rod extends out of the notch on the wire feeding pen body to form a press part of the T-shaped press wire feeding button, and the inner end of the horizontal rod is a V-shaped structure, and corresponding holes are arranged at both ends of the V-shaped structure; the inner end of the horizontal rod extends vertically downward along the bottom of the V-shaped structure to form a vertical rod with a V-shaped groove; The upper end of the strip guide rail is provided with hinge holes corresponding to the holes at both ends of the V-shaped structure at the inner end of the horizontal rod of the T-shaped push wire feeding button, and the hinge nail passes through the hole and the hinge hole to hinge the upper end of the strip guide rail and the T-shaped push wire feeding button; a V-shaped guide groove opposite to the V-shaped groove opening is provided along the length direction on one side of the strip guide rail adjacent to the vertical rod of the T-shaped push wire feeding button, and the V-shaped groove and the V-shaped guide groove form a first welding wire clamping channel; a protrusion is provided on the outer side of the upper end of the strip guide rail, and the protrusion is lower than the horizontal rod of the T-shaped push wire feeding button; The retaining ring is a cylindrical structure with a through hole in the center, and the retaining ring is fixed on the inner wall of the wire feeding pen body; the lower end of the strip guide rail extends into the through hole in the middle of the retaining ring; the spring sleeve is arranged on the outer side of the vertical rod of the T-shaped push wire feeding button and the strip guide rail, the upper end of the spring is arranged on the protrusion of the strip guide rail and the lower side of the horizontal rod of the T-shaped push wire feeding button, and the lower end of the spring is arranged on the end surface of the retaining ring; The damping check device is arranged at the lower end of the wire feeding pen body; it comprises a support block and a V-shaped spring pressure sheet; one end of the support block is arranged on the inner wall of the lower end of the wire feeding pen body, and a V-shaped notch is arranged at the suspended end of the support block; one side of the V-shaped spring pressure sheet is connected to the inner wall of the wire feeding pen body, and the cross section of the suspended side is V-shaped, and the suspended side of the V-shaped spring pressure sheet is arranged corresponding to the V-shaped notch of the suspended end of the support block to form a second welding wire clamping channel; The second wire feeding guide tube is arranged between the wire pressing and feeding mechanism and the damping and check device inside the wire feeding pen body; the outer edges at both ends of the second wire feeding guide tube are arranged on the inner wall of the wire feeding pen body; the center of the upper end of the second wire feeding guide tube is arranged as a funnel-shaped structure, and the center of the tube hole of the second wire feeding guide tube corresponds to the centers of the first welding wire clamping channel and the second welding wire clamping channel respectively.

2. The wire feeder for TIG welding according to claim 1, characterized in that: The welding wire installation hole, the axis of the first wire feeding guide tube, the center line of the first welding wire clamping channel, the center line of the retaining ring, and the center line of the second welding wire clamping channel all coincide with the center axis of the wire feeding pen body.

3. The wire feeder for TIG welding according to claim 1, characterized in that: The lower end of the wire feeding pen body is provided with a threaded portion, and the porcelain nozzle is arranged at the lower end of the wire feeding pen body through the threaded portion.

4. The wire feeder for TIG welding according to claim 1, characterized in that: The second wire feeding duct is made of transparent material.

5. The wire feeder for TIG welding according to claim 4, characterized in that: A viewing window is arranged on the outer edge of the wire feeding pen body at a position corresponding to the position of the second wire feeding guide tube.

6. The wire feeder for TIG welding according to claim 1, characterized in that: A pen clip is arranged on the outer edge of the upper end of the wire feeding pen body.

7. The wire feeder for TIG welding according to claim 1, characterized in that: The length of the lower end of the strip guide rail extending into the through hole of the retaining ring does not exceed half of the length of the retaining ring.

Images