KR102491283B1 - Module type welding torch for self assembly - Google Patents

Abstract

The present invention relates to a welding torch having a length-adjustable torch body, a torch grip for controlling discharge of wire and gas supplied from a welding feeder, and gas and wire discharged from the torch grip for welding a base material to a torch. In the torch body composed of a tubular torch body that guides toward the nozzle, the torch body includes: one module communicating with the torch grip, the other module communicating with the insulation pipe of the torch body, and the one module and the other module communicating with each other. consists of one or more central modules in between; The one module, the central module, and the other module are detachably screwed through a tubular bolt or nut hole formed at an end portion.

Description

Modular prefabricated welding torch {MODULE TYPE WELDING TORCH FOR SELF ASSEMBLY}

The present invention relates to a welding torch having a torch body capable of adjusting the length.

In general, welding of ship blocks is performed by a carbon dioxide welding machine in which a wire feeder for supplying a flux-cored wire is connected with a single cable.

To explain the welding method using the carbon dioxide welder in more detail, the welding is performed in the FCAW (Flux Cored Arc Welding) method, and the CO2 protective gas is released at the butt joint between the block panels (base material) to prevent the welding point. Oxygen inflow is blocked, and copper (Cu) plates are installed on both sides of the base material to prevent molten metal from flowing down. In addition, the wire fed from the wire feeder is fed from top to bottom through a welding torch.

In general, when welding a ship block by the FCAW method, a worker must weld while holding a welding torch directly as shown in FIG. 1, especially when welding a narrow space between ship blocks or equipment with a base material In addition to the risk of musculoskeletal disorders due to the instability and discomfort of the welding quality, there was a problem that the welding quality was not uniform and poor. In addition, since the inconvenience of the welding posture makes the welding bead uneven, a problem of adding deburring work after welding has occurred.

Prior Art Documents 1. Utility Model Registration No. 20-0365759 (published on October 22, 2004)

Accordingly, the present invention is intended to solve the above problems, and the object of the present invention is to provide a modular prefabricated welding torch capable of adjusting the length of the torch body according to the position of the base material and the welding posture.

In order to achieve the above object, the present invention,

In the torch body composed of a torch grip for controlling the discharge of the wire and gas supplied from the welding feeder, and a tubular torch body for guiding the gas and wire discharged from the torch grip toward the torch nozzle for welding the base material, Torch body,

It consists of one module communicating with the torch grip, the other module communicating with the insulation pipe of the torch body, and one or more central modules between the one module and the other module; The one module, the central module, and the other module are modular prefabricated welding torches that are detachably screwed together through a tubular bolt or nut hole formed at an end portion.

In the above present invention, since the length of the torch body can be adjusted according to the position of the base material and the welding posture, the operator can precisely weld the base material without much inconvenience, and if necessary, the shape of the torch body can be changed according to the structure of the site and the shape of the base material. Since it can be adjusted, there is an effect that the operator does not have to adjust the posture according to the welding site.

1 is an image showing a conventional state in which a worker welds a ship block,
2 is a view schematically showing the installation state of the welding machine according to the present invention,
3 is a view schematically showing an embodiment of a torch body configured in a welding torch according to the present invention,
4 is a view schematically showing another embodiment of a torch body according to the present invention;
5 is an enlarged perspective view of a side view of part “A” shown in FIG. 4;
6 is a view showing the operation of the torch body according to the present invention,
7 is a cross-sectional view schematically showing a flexible structure of a torch body according to the present invention;
8 is an exploded perspective view showing a state in which a support tube is coupled to a torch body according to the present invention;
Figure 9 is a view sequentially showing the process of disposing the support pipe at the boundary between the constituent modules of the torch body according to the present invention.

Hereinafter, the present invention will be described in detail based on the accompanying drawings.

Figure 2 is a view schematically showing the installation state of the welding machine according to the present invention, Figure 3 is a view schematically showing one embodiment of a torch body configured in the welding torch according to the present invention.

Referring to FIGS. 2 and 3 , a welding machine generally includes a welding torch 100 and a welding feeder 300 . Here, the welding torch 100 is a tool that the operator directly holds and manipulates for welding the base material, and the welding feeder 300 receives the welding wire by winding it around the bobbin 320, and feeds the wire under the control of the welding torch 100. do. The welding feeder 300 may be connected to the gas cylinder 200 and the hose H1 as a medium, and the hose H1 may be connected in communication with the cable C1 that receives the wire and transfers it to the welding torch 100. In addition, electricity required for arc welding may be applied from a power source (not shown) through a wire (not shown), and the wire may be connected to the welding torch 100 through a cable C1. Eventually, the welding torch 100 supplies gas, wire, and electricity necessary for welding through the cable C1, and the operator manipulates the torch grip 110 configured in the welding torch 100 to supply gas and wire necessary for welding. and discharge electricity.

As is known, the welding feeder 300 includes a frame 310, a bobbin 320, and a driving source 340, and further includes an adapter 330 connecting the cable C1 and the hose H1 in communication. can do. The driving source 340 provides power for supplying wire and gas and mechanically opens and closes the transfer path according to the operator's manipulation of the welding torch 100 or the control of the welding feeder 300 . Since the structure and function of the welding feeder 300 are already known technologies, further description thereof will be omitted.

The welding torch 100 according to the present invention includes a gas cylinder 200, a power source, and a torch grip 110 for adjusting the discharge of gas, electricity, and wires supplied from the welding feeder 300 through operator manipulation; From the torch body 121 in the shape of a tube that guides the gas, electricity and wires discharged from the torch grip 110, the insulation tube 122 that insulates and finishes the end of the torch body 121, and the torch body 121. A gas diffuser 123 for dispersing the discharged gas to wind around the wire, a welding tip 124 for guiding the gas diffused through the gas diffuser 123 to concentrate on the welding point while wrapping around the wire, and a wire It consists of a torch body 120 composed of a welding nozzle 125 to block the welding heat of the base material by being concentrated without diffusion.

As described above, in the torch grip 110, an operator holds the grip body 111 in which the trigger 112 is configured and manipulates the trigger 112. Therefore, when the operator pulls the trigger 112, gas, electricity, and wires are discharged to the torch body 120 from the cable C1 connected to the grip body 111. As a result, the base material is welded by gas, electricity, and wire discharged from the torch body 120 toward a point of the base material aimed by the operator.

Since the torch grip 110, the insulation pipe 122, the gas diffuser 123, the welding tip 124, and the welding nozzle 125 are already known technologies, detailed descriptions of the shape, connection structure, and function of each component is omitted.

The connection between the torch grip 110 and the torch body 120 will be described with reference to FIG. 2 .

As shown in (a) of FIG. 2, the torch body 121 has a first connection end 121a inserted into the port 111a of the torch grip 110 so as to be communicatively connected. In order to increase the degree of sealing between the torch grip 110 and the torch body 121, the packer P1 may be reinforced. In addition, in the torch body 121, the second connection end 121b is communicatively connected to the gas diffuser 123 via the insulating pipe 122. As a result, the gas, wire, and electricity discharged from the torch grip 110 are transferred to the gas diffuser 123 through the torch body 121 . In this embodiment, the torch body 121 has a bent shape to increase the welding convenience of the operator.

As shown in (b) of FIG. 2, the torch body 121 has one end connected in communication with the torch grip 110 via the first connection end 121a and the other end not connected to the gas diffuser 123. Module 1211 can be configured. Therefore, in one module 1211, only the first connection end 121a is configured at one end, and the second connection end 121b is not configured at the other end. Meanwhile, one side module 1211 shown in (b) of FIG. 2 forms a straight line shape. Unlike this, one module 1212 shown in (c) of FIG. 2 has a bent shape. As a result, the torch body 121 according to the present invention may have various shapes of one side modules 1211 and 1212 as needed.

Figure 4 is a view schematically showing another embodiment of the torch body according to the present invention, Figure 5 is a perspective view showing an enlarged side view of the "A" portion shown in FIG.

2 to 5, the torch body 121 according to the present invention is the other module (1213, 1215) whose other end is connected in communication with the insulation pipe 122 via the second connection end (121b) and a central module 1214 in which one or more modules are connected in communication between the modules 1211 and 1212 on one side and the modules 1213 and 1215 on the other side. Therefore, in the other modules 1213 and 1215, the second connection end 121b is configured only at the other end, and the first connection end 121a is not configured at one end.

Meanwhile, the central module 1214 may have one end connected to one module 1211 or 1212 or another central module, and the other end connected to the other modules 1213 or 1215 or another central module. 4 shows a torch body 121 in which one end of the central module 1214 is communicatively connected to one module 1211 and the other end of the central module 1214 is communicatively connected to the other modules 1213 and 1215. It became. The packer P2 may be reinforced to increase sealing between the modules 1211 , 1212 , 1213 , 1214 , and 1215 .

In this embodiment, the torch body 121 is formed by connecting one side modules 1211 and 1212, the central module 1214, and the other side modules 1213 and 1215 in a line so as to be in communication with each other. Connections between modules 1211, 1212, 1213, 1214, and 1215 are detachably screwed through tubular bolts B2 and B3 or nut holes N1, N2, and N3 formed at ends. In the case of one module (1211, 1212), the first connection end (121a) is configured at one end and the nut hole (N1) is configured at the other end. Correspondingly, a tubular bolt B3 is formed at one end of the central module 1214 connected to the one side modules 1211 and 1212 and a nut hole N3 is formed at the other end. Correspondingly, tubular bolts B2 are formed on the other modules 1213 and 1215 connected to the central module 1214, and a second connection end 121b connected to the insulating pipe 122 is formed at the other end. As a result, the connection between the modules 1211, 1212, 1213, 1214, and 1215 is made detachable through screw coupling.

On the other hand, the torch body 121 according to the present invention, the tubular bolts (B1, B2, B3) or nut holes (N1, N2, N3) is formed on the tube body (120a), the circumferential surface of the tube body (120a) It consists of an insulating cover (120b) coated with insulation. The tube body 120a of the torch body 121 is generally made of metal in consideration of strength and manufacturing efficiency for maintaining its shape. However, since a high-temperature wire, a high-voltage wire, and gas pass through the torch body 121, there is a risk of electric shock and burns to workers. Therefore, the outer surface of the tube body 120a must be safely insulated, and for this purpose, the circumferential surface of the tube body 120a is coated with an insulating material to form the insulation cover 120b.

Figure 6 is a view showing the operation of the torch body according to the present invention, Figure 7 is a cross-sectional view schematically showing a flexible structure of the torch body according to the present invention.

2 to 3 and 6 to 7, the torch body 121 according to the present invention has a flexible structure so that the operator can bend the torch body 121 in a desired direction and maintain the bent state. can do To this end, the pipe body 120a of the other module 1216 of this embodiment is composed of one end body 120a1 configured with the tubular bolt B2 and the other end body 120a1′ configured with the second connection end 121b. In addition, the tube body 120a of the other module 1216 includes a flexible coil tube 120a2 connecting one end body 120a1 and the other end body 120a1', and a circumference of the flexible coil tube 120a2. An elastic sealing cover 120a3 for covering and sealing the surface is further included.

Since the flexible coil pipe 120a2 connecting one end body 120a1 and the other end body 120a1' forms a gap of a certain pitch, it can be bent by a worker's manipulation. Meanwhile, the circumferential surface of the flexible coil tube 120a2 is coated with an elastic cover 120a3 so that gas is not exhausted through the gap of the flexible coil tube 120a2. In addition, since the insulating cover 120b seals the pipe body 120a together with the sealing cover 120a3, the gas transported through the other module 1216 is transported without external exhaust.

In this embodiment, the other module 1216 has a flexible structure, but is not limited thereto, and the central module 1214 as well as the one module 1211 and 1212 may have a flexible structure.

8 is an exploded perspective view showing a state in which a support pipe is coupled to a torch body according to the present invention, and FIG. 9 is a view sequentially showing a process in which a support pipe is disposed at a boundary between constituent modules of a torch body according to the present invention. to be.

2 to 3 and 8 to 9, as described above, the central module 1217 of the torch body 121 according to the present invention is composed of a pipe body 120a' and an insulating cover 120b'. . Here, the thickness of the insulating cover 120b' is formed so that the outer diameter expands at the end of the tube body 120a'. That is, the outer diameter of the end portion F is expanded by manufacturing the insulating cover 120b' to be thick at the ends F1, F1', F2, F2' (hereinafter referred to as F) of the central module 1217.

Meanwhile, a support pipe 140 having a larger inner diameter than the outer diameter of the central module 1217 and having a plurality of protrusions 141 formed on the inner circumferential surface is further configured so that the central module 1217 can pass through. This embodiment exemplifies the central module 1217, but in addition, one side modules 1211 and 1212, the other side modules 1213 and 1215, and the central module 1214 are also manufactured so that the insulating cover 120b' of the end portion F extends. Therefore, the support pipe 140 can move freely along the torch body 121 formed by connecting one side modules 1211 and 1212, the other side modules 1213 and 1215, and the central modules 1214 and 1217.

Subsequently, the support tube 140 moving along the torch body 121 is connected to each end of two modules of one side modules 1211 and 1212, the other side modules 1213 and 1215, and the central modules 1214 and 1217. At the boundary where (F) is interconnected, the protruding portion 141 is in close contact with the insulating cover 120b'. That is, since the thickness of the insulating cover 120b' becomes thick at the end portion F, the protruding portion 141 of the support pipe 140 is in contact with the insulating cover 120b' located at the end portion F by the expanded outer diameter. As a result, as the inner diameter of the support pipe 140 approaches the outer diameter of the end F of the insulating cover 120b', the proximity between the support pipe 140 and the insulating cover 120b' increases, and the support is provided at the boundary between the corresponding modules. The tube 140 engages with the insulating cover 120b' in a non-locking manner. Therefore, the support pipe 140 holds and supports the modules connected to each other so that they are not bent or twisted at the boundary, and through this, a plurality of modules are connected to each other to maintain a straight shape without bending even if the length of the torch body 121 is increased, and stable You can stay connected.

Although the detailed description of the present invention described above has been described with reference to preferred embodiments of the present invention, those skilled in the art or those having ordinary knowledge in the art will find the spirit of the present invention described in the claims to be described later. And it will be understood that the present invention can be variously modified and changed within a range that does not deviate from the technical scope.

100; welding torch 110; Torch grip 111; main body
111a; port 112; trigger 120; torch body
120a, 120a'; Tube bodies 120b, 120b'; Insulation cover
121; Torch body 121a; a first connection end 121b; 2nd connection end
1211, 1212; one module 1213, 1215, 1216; the other module
1214, 1217; central module 140, 140'; support pipe 141; projection part
B1, B2, B3; tubular bolts N1, N2, N3; nut hole
F, F1, F1', F2, F2'; ends P1, P2; packer

Claims (4)

In the torch body composed of a torch grip for controlling the discharge of the wire and gas supplied from the welding feeder, and a tubular torch body for guiding the gas and wire discharged from the torch grip toward the torch nozzle for welding the base material,
The torch body is composed of one side module communicating with the torch grip, another side module communicating with the insulation pipe of the torch body, and one or more central modules between the one side module and the other side module, and the one side module and The central module and the other module are detachably screwed together via a tubular bolt or nut hole formed at an end portion;
At least one selected from among the one module, the other module, and the central module is made of a tubular body having a tubular bolt or nut hole, and an insulating cover obtained by insulating a circumferential surface of the tubular body;
The outer diameter of the insulating cover extends from the end of the tube body;
The one module, the other module, and the central module have a tubular shape passing through, and a plurality of protrusions are formed on the inner circumferential surface in the longitudinal direction of the one module, the other module, and the central module, and the one module, the other module, and the central module are connected to each other. A support tube for supporting the two modules to maintain a fixed state without mutual rotation by engaging the protrusion at the boundary between each end of the two modules to be engaged with the insulating cover of the end in a non-locking manner; modular type characterized in that it further comprises Prefabricated welding torch. According to claim 1,
At least one selected from among the one module, the other module, and the central module is a flexible coil tube in which the tube body forms a gap according to a predetermined pitch, and one end body and the other end connected to both ends of the flexible coil tube, respectively A modular prefabricated welding torch, characterized in that composed of a body and an elastic sealing cover covering and sealing the circumferential surface of the flexible coil tube to close the gap between the flexible coil tube.
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