KR101974524B1 - A welding wire feeder - Google Patents

Abstract

The wire feeding apparatus of the present invention is a wire feeding apparatus capable of simultaneously feeding one or more multi-stranded wires. In response to a situation required by a TIG welding apparatus, a feeding wire strand is connected to one or two or more stranded wires Is selected and supplied at the same time as required.

Description

Description of the Related Art A welding wire feeder

The present invention relates to an apparatus for feeding one or more wires that can supply multiple strands of wire used in an automatic TIG welding apparatus simultaneously or in a desired number of wires.

In a conventional automatic TIG welding apparatus, a welding wire is supplied by a feeding device having a fixed number of welding wires.

Korean Patent Application No. 10-2012-7012641 (Publication Number: 1020120100998 (2012.12.12.)) Application for utility model registration in Korea 20-2003-0008918 (Registration No .: 200318669 (June 20, 2003))

In a welded joint of two plate materials or pipes, a single stranded wire is selected and welded at a low current. In the central portion of the plate thickness or the welded portion of the cap, three strands or 5 It is necessary to selectively perform low current and high current welding with one equipment by performing welding with a large current while simultaneously selecting and supplying strands of wire.

The wire feeding apparatus for welding according to the present invention is a wire feeding apparatus for supplying at the same time at least one wire, and the wire is connected to a wire reel 801, a deformation roller 803, a wire straightening roller 804, 809, a wire exit guide tube 814, a wire liner 817, a wire guide tube 819 and a wire guide tip 820, and a feeding roller shaft 807 directly connected to one feeding motor 806. [ One or more of the feed rollers 809 installed on the shaft feeds the wire at the same speed while simultaneously rotating at the same number of revolutions and the wire guide tip 820 is connected to the upper plate 820-1 and the lower plate 820-2 The vibration of the wire entering the hole of the wire guide tip 820 is absorbed by the gap adjusting ball plunger 820-6 in the engaged state and the wire is laterally aligned to the front plate 820-3 And the welding point The. By means of such a welding wire feeder, one or more multi-stranded wires can be simultaneously fed to a conventional TIG welding device, so that the TIG welding device is capable of feeding one or two or even two The above-described multiple stranded wires can be selected and supplied simultaneously as needed.

In the embodiment of the wire feeding apparatus for welding according to the present invention, when the respective pressure levers 813 through which one or more wires to be fed pass are vertically installed, the coil spring elastic force inside the pressure lever causes the pressure roller brackets 811 Is pushed toward the feeding roller and the pressing roller 810 provided under the pressing lever presses the wire 822 in the feeding roller 809 so that the number of strands of the wire bundled at one welding point can be selected . The operation of vertically depressing the pressure lever to select the number of strands of the wire can be directly controlled manually or by remote control using power such as electric or hydraulic pressure.

In the embodiment of the present invention, the holes of the wire guide tips 820 are characterized in that one or more wires are passed together side by side, and one or more wires are arranged symmetrically. Examples of left-right symmetrical arrangements passing through the holes are "-" type or C "type or" V "type.

In an embodiment of the present invention, the wire guide tips 820 may include holes having a shape through which one or more wires having separate specifications are passed therethrough. With this configuration, wires of different thicknesses can be continuously supplied corresponding to different positions of the wire required in one welding point.

By applying the wire feeding apparatus of the present invention, it is possible to selectively perform low current and high current welding with one welding apparatus, thereby shortening the welding preparation time and performing high efficiency welding. That is, in a welded joint of two plate members or pipes in a butt joint, a single stranded wire is selected and welded at a low current in a welded portion of a thicker welded groove, Or five strands of wire are simultaneously selected and supplied simultaneously, welding can be performed with a large current so that low current and high current welding can be selectively performed by one equipment.

     By adopting the standard cross-section wire used in automatic TIG welding and MIG welding, it is possible to easily and cheaply purchase the welding wire for special materials. That is, the welding wire feeding apparatus of the present invention can simultaneously supply one or more multi-stranded wires to a conventional TIG welding apparatus to simultaneously feed the feeding wire strands to one or two or more multiple strands Can be selected and supplied at the same time, so that it is possible to use a standard cross-section wire of standard size used in automatic TIG welding and MIG welding.

The welding wire feeding apparatus of the present invention is a wire feeding apparatus in which wires are collected and supplied to a welded portion in the form of a straight line, "-" or "C" or "V" And can be applied to a TIG welding apparatus.

In order to improve the welding performance in the TIG welding apparatus including the wire feeding apparatus of the present invention, the diameter of the feeding wire located at the center of the arc is large and the diameter of the feeding wire located at the edge of the arc is small Can be supplied at the same time.

The TIG welding apparatus of the present invention includes a wire feeder capable of supplying a plurality of strands of wire at the same feed rate at the same time. When feeding a plurality of strands of wire, the wire feeder feeds wires And can be supplied to the welded part as "ㅡ" type, "C" type, and "V" type without shaking.

     The automatic TIG welding apparatus to which the wire feeding apparatus of the present invention is applied can obtain a high welding speed of about 110 g / min, which is similar to the productivity of a general GMAW / FCAW or SAW automatic welding method.

1 shows a TIG welding apparatus including a wire feeding apparatus of the present invention,
Fig. 2 shows a peripheral portion including an automatic TIG torch,
Fig. 3 is a side view of the wire feeding apparatus of the present invention,
Fig. 4 is a cross-
Fig. 5 is a cross-
Fig. 6 is a cross-
Figure 7 is a cross-
Fig. 8 is a cross-sectional view of a guide tip B and C when using a wire of the " - &
Fig. 9 is a cross-sectional view of guide tips B and C in the case of using " - "
Fig. 10 is a cross-sectional view of guide tips B and C when the " C "
Fig. 11 is a cross-sectional view of guide tips B and C when using " C "
Fig. 12 is a sectional view of guide tips B and C when the " V "
Fig. 13 is a sectional view of guide tips B and C in the case of using " V "
Figure 14 shows the selective simultaneous feeding of wires
Figure 15 shows a pressurized roller pressurizing device for remotely controlling the selective feeding of the wire
Figure 16 shows the wire feed stop of the wire-
17 shows the wire feeding state of the wire-
Figure 18 shows an air cylinder operating circuit diagram of the wire-

As shown in FIGS. 1 and 2, an automatic TIG welding apparatus including a multi-strand wire feeding apparatus includes (1) a TIG welding power source, (2) an automatic TIG torch, (3) a cooling water pump, (4) 5) TIG torch cable, (6) Motor drive slide for TIG arc voltage control, (7) TIG torch oscillator, (8) Multiple strand wire feeder, (9) Argon gas bottle, (10) Argon gas flow regulator 11) positioner, (12) pipe for welding test, and (13) wire feed rate controller.

5, five feeding rollers 809 are provided on the feeding roller shaft 807 axis directly connected to one feeding motor 806 in the wire feeding apparatus shown in Fig. 3, and at the same time, . The multi-strand wire feeding apparatus is provided with a feeder roller shaft 807 driven by one feeding motor 806 as shown in Figs. 3, 4, 5, 6, and 7, A wire reel hub 802, a wire deformation roller 803, wire straightening rollers 804 and 805, a wire reel 801, a wire reel hub 803, A roller 810, a wire pressing roller press lever 813, a wire outlet guide tube 814, a wire liner adapter 815, a wire liner holder 816, a wire liner 817, a wire liner block 818, A guide tube 819, a wire guide tip 820, and a bracket 821.

        Since the wire 822 wound around the wire reel 801 has different inherent deformation depending on the spool position, the wire that has passed through the deformation roller 803 by winding one turn around the wire deformation roller 803 has the same inherent deformation And then the wire is corrected so as to be straight when passing through the wire straightening apparatuses 804 and 805. The linearly calibrated wire is fed by the feed roller 809 and the press roller 810 at a speed of wire transfer set in the wire feed speed controller and is fed through the wire liner holder 816 and the wire guide tube 819, The wire is fed to the tip 820, and as the wire passes through the hole of the wire guide tip 820, as shown in Fig. 7, the wire is gathered into the horizontal straight line, "-" or "C" It is symmetrical and supplied to the welding part.

7 is a sectional view of the upper plate 820-1 and the lower plate 820-2 in the detail of the section C and the section B in the detail is a section of the front plate 820-3, This is a front view of the wire outlet of the tip. On the front plate, there is a hole for correcting the shape of the wire when the outlet is released.

("C", "V", "C", and "B") in which the wire comes out through the outlet of the front plate 820-3 is made so as to eliminate the shaking of the wire, Etc.), and it is installed so that it can be used by replacing soon if the hole shape is distorted due to weariness.

The ball plunger 820-6 shown in FIG. 7 has a built-in spring, so that the upper and lower tips and the wire can be absorbed when other foreign matter intervenes or wire thickness deviates .

 The wire guide tips 820 may be formed of a top plate 820-1, a bottom plate 820-1 and a bottom plate 820-2 so as to prevent the occurrence of flickering in each wire 822 when the wire 822 leaves the wire guide tip 820. [ 2) and two pieces of the upper plate 820-1 and the lower plate 820-2 are combined with the upper plate, the lower plate coupling and the gap adjusting bolts 820-5, The wire 822 is supplied in a state where the surface of the wire 820 and the top plate 820-1 and the bottom plate 820-2 are in contact with each other at a portion where the wire 822 comes out from the tip 820. [ In order to minimize the friction between the wire 822 and the upper and lower plates, a ball plunger 820-6 is provided behind the plate to hold the upper plate 820-1 and the lower plate 820-2 at a distance from each other. A plurality of strands 822 are gathered in the front plate 820-3 so that they are closely contacted in a horizontal straight line, a "-" or a "C" or a "V" Holes are processed and used as shown in Figs. 7 to 13.

       Wire standard used for automatic TIG welding and MIG welding is 0.5 mm to 1.6 mm, and the wire standard to be used together is the same as that shown in FIGS. 7 to 13 May be used. In order to improve the welding performance, it is possible to select a thick wire in a central portion having a high arc temperature and a wire standard in an arc edge having a low arc temperature. If you are using more than one wire of different thickness, it may be a common case that the thickest wire comes in the middle. However, the positions of the wires having different thicknesses may be changed depending on the processing of the holes.

        When the number of wires to be used in a feeding apparatus provided with a plurality of wire feeding rollers is selected, as shown in FIG. 14, in the case of using a single wire as shown in FIG. 14 (a) in a wire feeder equipped with five feeding rollers The wire of the feed roller is fed to the feed rollers corresponding to the feed rollers at the center No. 3 feed roller and the feed rollers of the other feed rollers are released from the fixed position so that the press rollers can not feed the wire do. 14 (b), when three wires are to be used, three wires can be fed by placing the pressure rollers 3, 2, and 4 in the correct positions as shown in FIG. 14 (c), when five wires are used, five wires can be fed by positioning both of the first, second, third, fourth and fifth pressure roller pressing levers .

In the case of using the automatic TIG welding apparatus including the multi-strand wire feeding apparatus of the present invention, a single strand of wire is selected and welded at a low current in the case of a multi-layer welding with a narrow groove width in the butt V groove welding, This wide mid-layer and cap layer welding can be made by two-stranded, three-stranded, four-stranded or five-stranded wire, and one-pass welding with high current welding makes it possible to easily produce a wide range of weld beads. The total number of welding passes can be reduced as well as the total welding time can be shortened.

As an automatic apparatus for selectively feeding wires, the air cylinder 92 is fixed by a fixing pin 94 as shown in Figs. 15 to 18 for mechanically operating the pressing handle 813 of the wire feeding apparatus, The end of the cylinder rod 93 is connected to the screw shaft 8131 of the wire pressing handle and the air solenoid valve 97 is operated to move the pressing handle 813 forward or backward.

The pressurizing roller pressurizing device is shown in Fig. When the pressing handle 813 is rotated in the right direction, the female thread in the pressing handle 813 engages with the external male thread of the screw shaft 8131 and the pressing handle 813 moves downward to compress the spring 8134 Structure. The compressed spring 8134 pushes the spring receiving plate 8132 downward and the spring receiving plate 8132 pushes the end of the wire pressing roller bracket 811 downward so that the wire pressing roller 810 installed on the pressing roller bracket So that the wire is pressed. At this time, the pressing force can be adjusted by adjusting the vertical position of the pressing handle 813. In addition, the spring support plate 8132 is formed in a round shape so that the spring support plate 8132 can be smoothly moved up and down the end of the pressure roller bracket 811, and the end portion of the wire pressing roller bracket 811 is also formed in a round shape .

When the air hose (forward) 96 is opened by operating the air solenoid valve 97, the air cylinder rod 93 is pushed forward as shown in Fig. 16 and the screw shaft 8131 is pushed forward and the pressing handle 813 The wire pressing roller 810 is released from pushing the wire 822 into the groove of the wire feeding roller 810 because the spring presser roller 8110 is slid off from the upper surface of the bracket 811 by the wire press roll . When the pressure of the wire is released, the supply of the wire is stopped.

When the air hose (backward) 95 is opened by operating the air solenoid valve 97, the air cylinder rod 93 is shortened as shown in Fig. 17 and pulls the screw shaft 8131 forward, The spring 8134 is compressed while the spring support 8132 rides on the upper surface of the bracket 811 with the wire press roll. The wire pressing roller 810 presses the wire 822 into the groove of the wire feeding roller 810 when the repulsive force of the compressed spring 8132 acts on the end portion of the wire pressing roller bracket 811 in the downward direction. When the wire is pressed, the wire is fed as the wire feeding roller 809 rotates.

(1) is a TIG welding power source
(2) is an automatic TIG torch
(3) is a water-cooled pump for automatic TIG torch cooling
(4) is a TIG torch stand
(5) is a TIG torch cable
(6) is a motor drive slide for automatic control of TIG arc voltage
(7) is an oscillator for a TIG torch,
(8) is a multi-strand wire feeder
(9) is an argon gas bottle
(10) is an argon gas flow rate regulator
(11) is a positioner (welding pipe rotating device)
(12) is a pipe for welding test
(13) is a wire-
(91) has an air cylinder fixing pin
(92)
(93) comprises an air cylinder rod
Lt; RTI ID = 0.0 > 94 &
(95) is an air hose
(96) is an air hose (rod advance)
(97) includes an air solenoid valve
(98)
(801)
(802)
(Vertical direction correcting roller, horizontal direction correcting roller)
(804) comprises a wire straightening roller unit
(805) has a wire straightening roller
(806)
(807)
(808) includes a feed roller shaft support
(809)
(810)
(811) is a wire-
(812) comprises a wire-pressing roller bracket support
(Internal thread) of the wire pressing roller,
(8131)
(8132)
(8133)
(8134)
(8135)
(814) includes a wire outlet guide tube
815 is a wire liner adapter,
(816) includes a wire liner holder
(817)
Lt; RTI ID = 0.0 > 818 &
Lt; RTI ID = 0.0 > 819 &
Lt; RTI ID = 0.0 > 820 &
(820-1)
(820-2)
(820-3)
(820-4)
The upper and lower plate coupling and spacing bolts 820-5,
The upper and lower plate interval adjusting ball plungers 820 -
(820-7)
(821)
(Not shown)

Claims (4)

A wire feeding apparatus for welding which supplies at least one wire,
The wires are connected to a wire reel 801, a deformation roller 803, a wire straightening roller 804, a feeding roller 809, a wire outlet guide tube 814, a wire liner 817, a wire guide tube 819, , Wire guide tip 820,
One or more of the feeding rollers 809 provided on the axis of the feeding roller shaft 807 directly connected to one feeding motor 806 maintains a predetermined number of rotations and feeds the wires at a constant speed,
The wire guide tip 820 is inserted into the hole of the wire guide tip 820 by the gap adjusting ball plunger 820-6 in the engaged state of the upper plate 820-1 and the lower plate 820-2 The vibration is absorbed, and the wire is supplied to the welding plate at a single welding point passing through the front plate 820-3. The method according to claim 1,
When each of the pressure levers 813 through which one or more wires to be fed pass is vertically set, the pressure roller 811 is pushed in the direction of the feeding roller by the resilience of the coil spring in the pressure lever and the pressure roller 810 Is selected by the number of strands of the wire supplied to one welding point by pressing the wire (822) in the groove of the feeding roller (809). The method of claim 1, wherein
Wherein the holes of the wire guide tips (820) pass through at least one wire, and the arrangement of the at least one wire is formed along the array of holes. The method according to claim 1,
Wherein the wire guide tip (820) comprises at least one hole through which at least one wire having a separate standard is passed.

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