WO2022050502A1

WO2022050502A1 - Welding rod holder

Info

Publication number: WO2022050502A1
Application number: PCT/KR2020/016937
Authority: WO
Inventors: 남기원
Original assignee: 남기원
Priority date: 2020-09-01
Filing date: 2020-11-26
Publication date: 2022-03-10

Abstract

According to an embodiment of the present invention, a welding rod can be held until the welding rod is used to the end or a minimum part of the welding rod remains, and thus, waste of resources may be prevented, and at the same time, consumption of resources allocated for welding can be minimized. Thus, the unit price of a product can be reduced, which contributes to improving product competitiveness. To this end, an embodiment of the present invention provides a welding rod holder comprising: a holder body having a guide tube embedded therein, the guide tube guiding the movement of a welding rod; a nozzle, through which the welding rod is discharged, at one end of the holder body; a welding rod supply module which is accommodated in the holder body and installed at one end of the guide tube to supply the welding rod; a material sensor which senses whether the welding rod is inserted; a pair of gears which hold and transport the welding rod; and a driving motor which transfers a driving force to the pair of gears.

Description

welding rod holder

The present invention relates to a welding electrode holder, and more particularly, to a welding electrode holder capable of holding a pillow rod or a welding electrode in arc welding.

Arc welding includes arc welding of coated metal, submerged arc welding, and inert gas welding. Covered metal arc welding is the most common welding method of welding with the heat of the arc generated by applying a voltage between the base material and the coated welding rod to be welded. The welding electrode is melted and mixed with the molten metal to fill the gap between the base metal and the base metal and harden to become a weld metal. Submerged arc welding is a method of automatically welding by supplying an uncoated electrode made of a long string at a constant speed and melting the welded part with the heat of the arc generated between the tip and the base material. In this case, the characteristic is that the arc is not directly visible by the special granular flux which is glassy, and for this reason, the arc cannot be seen from the outside. There are two types of inert gas welding, MIG and TIG, in which TIG hardly consumes electrodes. Argon arc · Heliark is a brand name for Tungsten Inert Gas welding (TIG), and Sigma is a kind of brand name for MIG (Metal electrode inert gas welding).

MIG welding is called metal inert gas welding (MIG) or gas metal arc welding (GMAW). It is a welding method that uses an inert gas to protect the molten metal from the surrounding air. It is possible to weld thin and thick steel plates, and is widely used for welding aluminum, magnesium, titanium alloy, and stainless steel. As the current density increases, the penetration depth increases, and the penetration depth is also affected by the protective gas used. The shielding gas that can obtain the maximum penetration depth is helium, argon is the medium, and carbon dioxide is the minimum.

TIG welding is a type of arc welding where an arc is generated from a tungsten rod having a very high melting point and the material is melted by the heat. Shield gas is used like semi-automatic welding. It is also possible to add a melting material. It is good for precise welding and is used for welding of high-pressure pipes or precision equipment. Since high melting point tungsten is used as an electrode, the consumption of the electrode itself is small, but in order to add welding metal, you have to work with a welding rod in your left hand. Because it uses both hands, proficiency is required. Although the degree of difficulty is relatively high, it is highly adaptable to welding to non-ferrous metals. In fact, when aluminum or stainless welding is used, the arc becomes plasma and melts like gas welding or soldering, so it is basically the simplest method among butt welding. The only feature is that there is no spark during welding.

In the case of TIG welding using both hands, welding is performed while holding a welding machine with a tungsten electrode in one hand and a filler rod or a welding rod (welding rod) in the other hand. The welding rod used for argon welding is a consumable material because it is a material that is melted and welded to the base material, which is the object to be welded. Therefore, since the operator works while gripping with one hand, it is dangerous to approach the arc point, or it can lead to wasted resources having to discard the shortened electrode in order not to cause the hazard.

In the end, it is necessary to develop a welding rod holder that can hold the welding rod using a holder, control the length, and secure safety so that the welding rod can be used to the end or left with a minimum length.

The present invention has been derived from the above needs, and an object of the present invention is to provide a welding rod holder that can hold the welding rod so that the welding rod can be used to the end or left with a minimum length and can automatically advance or reverse the welding rod is to do

An object of the present invention as described above, a guide tube hollow in the longitudinal direction so that the welding rod is inserted and guided; a holder body accommodating the guide tube therein, and having a welding rod supply hole formed at one end for supplying a welding rod; a nozzle unit mounted on the other end of the holder body to discharge the welding rod guided by the guide tube; and a driving unit accommodated in the holder body, gripping the welding rod guided along the guide tube, and transmitting a driving force to the welding rod.

And the driving unit includes a pair of rollers and a driving motor that transmits driving force to the pair of rollers that grip the welding rod therebetween, and one of the pair of rollers is a driving roller that transmits driving force and the other is a welding rod It may be a conveying roller to pressurize.

The driving unit includes a lever equipped with a transfer roller on one end, an elastic body mounted on the other end of the lever, a pedestal on which a part of the lever is supported, and the other end of the lever located on the opposite side of the elastic body and moved to the outside of the holder body. It may further include a protruding grip button.

In addition, the driving roller may be formed with a 'V'-shaped groove on which the welding rod is seated along the outer surface.

On the other hand, the welding rod holder, one end of the guide tube is connected and fixed, guides the welding rod guided by the guide tube between a pair of rollers, the tube connecting member is formed with a through hole in the outer surface; a first electrode having one end protruding from the outside of the tube connecting member to the inside through the through hole; a second electrode having one end connected to one side of the driving motor; and a welding electrode sensor in which the other end of the first electrode and the other end of the second electrode are respectively connected.

In addition, the nozzle unit may include a connection cap directly coupled to the holder body and a cover cap coupled to the connection cap, and the connection cap and the cover cap may have a tapered discharge hole through which the welding rod is discharged.

According to an embodiment of the present invention as described above, since the welding electrode can be gripped so that the welding electrode can be used to the end or left with a minimum length, it is possible to prevent wastage of resources and at the same time minimize the consumption resources allocated to welding. And it helps to improve the competitiveness of welding products because it can lower the product cost.

In addition, since the welding rod, which was previously held and controlled by the operator's hand, can be inserted into the holder and used, and the movement of the welding rod can be automatically controlled and supplied, there is an advantage that the welding operation can be facilitated and work safety can be promoted.

1 is a longitudinal cross-sectional view of a welding rod holder according to an embodiment of the present invention;

2 is a plan view of a welding rod holder according to an embodiment of the present invention;

3 is a side view of a welding electrode holder according to an embodiment of the present invention;

4 is a perspective view showing a state in which the upper case of the holder body of the welding rod holder is removed according to an embodiment of the present invention;

5 is a perspective view showing a state in which the PCB is removed from the welding rod holder shown in FIG. 4;

6 is a perspective view showing a state in which the lower case of the holder body is removed from the welding rod holder shown in FIG. 5;

7 to 10 are perspective views illustrating a driving unit and peripheral components of a welding electrode holder according to an embodiment of the present invention.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings and contents described in the accompanying drawings, but the present invention is not limited or limited by the embodiments.

Various modifications may be made to the embodiments described below. It should be understood that the embodiments described below are not intended to limit the embodiments, and include all modifications, equivalents, and substitutes thereto.

Meanwhile, in describing the present invention, if it is determined that a detailed description of a related known function or configuration may unnecessarily obscure the gist of the present invention, the detailed description thereof will be omitted. And, the terms used in this specification are terms used to properly express an embodiment of the present invention, which may vary according to the intention of a user or operator, or a custom in the field to which the present invention belongs. Accordingly, definitions of these terms should be made based on the content throughout this specification.

In addition, in the description with reference to the accompanying drawings, the same components are given the same reference numerals regardless of the reference numerals, and the overlapping description thereof will be omitted. In describing the embodiment, if it is determined that a detailed description of a related known technology may unnecessarily obscure the gist of the embodiment, the detailed description thereof will be omitted.

용접봉 홀더welding rod holder

1 is a longitudinal cross-sectional view of a welding electrode holder according to an embodiment of the present invention, Figure 2 is a plan view of the welding electrode holder according to an embodiment of the present invention, Figure 3 is a welding electrode holder according to an embodiment of the present invention is a side view of 1 to 3, the welding electrode holder according to an embodiment of the present invention is externally the holder body 20, the nozzle part 30, the grip button 460, the forward button ( 510), a reverse button 520, a speed control button 530, and a power button 540 are provided, and one side of the holder body 20 is recessed so that the operator can hold it comfortably by hand. The welding rod holder of this embodiment is interposed between a pair of

rollers

410 and 412 by inserting the welding rod 3 into the guide tube 10 at the rear end of the holder body 20 and operating the grip button 460, By manipulating the forward button 510 , the reverse button 520 , and the speed control button 530 , the welding electrode 3 consumed by the operation can be moved forward or backward little by little.

The advanced welding rod 3 is discharged to the outside through the discharge hole 330 through the connection cap 310 and the cover cap 320 constituting the nozzle unit 30 . The nozzle unit 30 acts to minimize the influence of the electric and electronic components inside the holder body 20 from the high heat of the welding situation by forming the connection cap 310 and the cover cap 320 in a double layer. Since the connection cap 310 has a screw thread formed in the front and rear directions, the holder body 20 and the cover cap 320 are connected and fixed by screw coupling. In a high-temperature welding situation, the connection cap 310 is preferably made of a heat-resistant material such as ceramic, and the connection cap 310 is also preferably formed using a heat-resistant material.

The guide tube 10 is configured so that both ends are connected and fixed by further adding a connecting fixing member directly or indirectly to the holder body 20 . For example, in this embodiment, a fixing member that can be inserted into each other is further added to the portion into which the welding rod 3 is inserted, and a tube connecting member through which the guide tube 10 is fitted near the pair of rollers 410 and 412 (70) may be further added. Here, the exact function and action of the tube connecting member 70 will be described later along with the configuration of the driving unit.

4 is a perspective view showing a state in which the upper case is removed from the holder body of the welding rod holder according to an embodiment of the present invention, FIG. 5 is a perspective view showing a state in which the PCB is removed from the welding rod holder shown in FIG. 4, and FIG. 6 is It is a perspective view showing a state in which the lower case of the holder body is removed from the welding rod holder shown in FIG. 5 .

4 to 6, the holder body 20 of this embodiment is configured to be separated into an upper case and a lower case to facilitate arrangement and repair of components accommodated therein. On the contrary, the holder body 20 may be configured as an integral part by giving up the ease of disassembly, or it may be made in a form that is separable into a front case and a rear case.

The forward button 510 , the reverse button 520 , the speed control button 530 , and the power button 540 protrude to the outside of the holder body 20 , and are mounted on a printed circuit board (PCB 90) accommodated therein. Among them, the speed control button 530 is formed in a slide manner to control the speed for each step through the button slide.

The lever 430 is supported on the pedestal 450, the transfer roller 412 is mounted on the front end with the support point as the center, and the grip button 460 and the elastic body 440 are disposed on the rear end with the support point on the upper end. By using the lever principle to allow the transfer roller 412 to be spaced apart from the driving roller 410 when the operator presses the grip button 460, the welding rod 3 is formed between the transfer roller 412 and the driving roller 410. to be well inserted. When the grip button 460 is released, the transfer roller 412 is pressed toward the driving roller 410 by the restoring force of the elastic body 440 such as a spring.

In this embodiment, a battery 60 capable of being charged and discharged is disposed under the guide tube 10 . In addition, although a USB C type charging port is installed at the rear end, a different type of charging port may be installed, or a battery replacement type power supply unit may be formed instead of a direct charging type.

As shown in FIG. 6 , the tube connecting member 70 is formed in a hollow cylindrical shape so that it can be inserted and fastened to one end of the guide tube 10 having the same shape. And the pedestal 450 supporting the lever 430 is configured such that a pair of protrusions protruding to the side of the lever 430 can be mounted, so that the welding rod 3 is moved in opposite directions at both ends of the lever 430 for gripping. This is easy. In addition, the driving roller 410 may be directly connected to the driving motor 420 to maximize the driving force received from the driving motor 420 .

7 to 10 are perspective views illustrating a driving unit and peripheral components of a welding electrode holder according to an embodiment of the present invention. Hereinafter, the driving unit and peripheral components will be described in detail with reference to FIGS. 7 to 10 .

It has been described above that the tube connecting member 70 to which the guide tube 20 is connected is formed in a hollow cylinder, and the guide tube 20 is inserted and connected thereto. However, the tube connecting member 70 is formed with a through hole 710 communicating with the inside of the cylinder at the bottom. One end of the first electrode 80 which is a conductor protrudes into the tube connecting member 70 through the through hole 710 . The inside of the tube connection member 70 is an access road for the welding rod 3 , and when the welding rod 3 is present, it comes into contact with the welding electrode 3 .

The welding rod 3 in contact with one end of the first electrode 80, the driving roller 410 in contact with the welding rod 3, the driving motor 420 electrically connected to the driving roller 410, and the driving motor 420 The second electrodes 82 to which one end is connected are electrically connected to each other. Therefore, when the other end of the first electrode 80 and the other end of the second electrode 82 are connected to a welding rod sensor (not shown) mounted on the PCB 90, the welding rod sensor is the welding rod 3 is located inside the welding rod holder. sense that there is Subsequently, the welding electrode 3 is consumed and the length is shortened and when the contact with the first electrode 80 is terminated, it is electrically cut off, so the welding electrode sensor alerts the operator so that an additional welding rod 3 can be inserted.

Such an alarm may be an audible alarm or a visible alarm, but in the present embodiment, the operator's attention may be reduced due to noise or light due to welding. Therefore, in the present embodiment, the welding rod sensor operates the vibration motor 84 and the vibration motor 84 vibrates and transmits the vibration to the hand of the operator holding the holder body 20 to give an alarm.

Although the first electrode 80 protrudes into the tube connecting member 70, the welding rod 3 is double-bent so as not to obstruct the movement of the welding rod 3 so as to form an inclination in the forward and backward directions, respectively. That is, it is bent once from the outside of the through hole 710 into the through hole 710 , and is bent once more from the inside of the through hole 710 toward the outside of the through hole 710 .

As shown in FIGS. 9 and 10 , the driving roller 410 has teeth formed on the outer surface to increase the gripping force of the welding rod 3 . In addition, the driving roller 410 formed a 'V'-shaped groove along the rotating outer surface. This can form a constant forward and backward directions while increasing the hollow size of the guide tube 10 and the tube connecting member 70 sufficiently so that the welding rod 3 of various thicknesses can be inserted and used in the welding rod holder according to the present embodiment. That is, the welding rod 3 moves forward or backward while being seated together in a 'V'-shaped groove on the outer surface.

Although the embodiments of the present invention have been described above with reference to the accompanying drawings, the technical configuration of the present invention described above is another specific form for those skilled in the art to which the present invention pertains without changing the technical spirit or essential features of the present invention. It will be understood that it can be implemented as Therefore, it should be understood that the embodiments described above are illustrative in all respects and not restrictive. In addition, the scope of the present invention is indicated by the following claims rather than the above detailed description. In addition, all changes or modifications derived from the meaning and scope of the claims and their equivalents should be construed as being included in the scope of the present invention.

[Explanation of code]

3: welding rod

10: guide tube

20: holder body

30: nozzle unit

310: connection cap

320: cover cap

330: discharge hole

40: drive unit

410: driving roller

412: feed roller

420: drive motor

430: lever

440: elastic body

450: pedestal

460: grip button

50: control unit

510: forward button

520: reverse button

530: speed control button

540: power button

60: battery

70: tube connecting member

710: through hole

80: first electrode

82: second electrode

84: vibration motor

90: PCB

Claims

a guide tube hollow in the longitudinal direction so that the welding rod can be inserted and guided;

a holder body accommodating the guide tube therein, and having a welding rod supply hole formed at one end for supplying the welding rod;

a nozzle part mounted on the other end of the holder body to discharge the welding rod guided by the guide tube; and

and a driving unit accommodated in the holder body, gripping the welding rod guided along the guide tube, and transmitting a driving force to the welding rod.
According to claim 1,

The driving unit includes a pair of rollers gripping the welding rod therebetween and rolling, and a driving motor for transmitting a driving force to the pair of rollers,

One of the pair of rollers is a driving roller that transmits a driving force, and the other is a conveying roller that presses the welding rod.
3. The method of claim 2,

The driving unit includes a lever on which the transfer roller is mounted on one end, an elastic body mounted on the other end of the lever, a pedestal on which a part of the lever is supported, and the opposite end of the elastic body with the other end of the lever interposed therebetween. The welding electrode holder further comprising a grip button positioned on one side and protruding out of the holder body.
3. The method of claim 2,

The driving roller is a welding rod holder, characterized in that along the outer surface is formed with a 'V'-shaped groove in which the welding rod is seated.
3. The method of claim 2,

a tube connecting member having one end of the guide tube connected and fixed, guiding the welding rod guided by the guide tube between the pair of rollers, and having a through hole formed on an outer surface thereof;

a first electrode having one end protruding from the outside of the tube connecting member to the inside through the through hole;

a second electrode having one end connected to one side of the driving motor; and

The other end of the first electrode and the other end of the second electrode are connected to each other, the welding electrode holder further comprising a welding electrode sensor.
According to claim 1,

The nozzle unit includes a connection cap directly coupled to the holder body, and a cover cap coupled to the connection cap,

In the connection cap and the cover cap, a discharge hole through which the welding rod is discharged is tapered.