TWI569915B - Swing guns - Google Patents

Description

Swing torch

The invention relates to a welding device, in particular to a welding gun with a welding gun shaft swingable.

Welding technology is an important processing technology in modern industrial production. It is widely used in many important sectors such as petrochemical, shipbuilding, bridge, railway, construction, machinery manufacturing and defense industry. At present, the welding operations (such as shipyards) are mainly divided into manual welding and automatic welding. Automatic welding is used to replace heavy-duty repetitive work and manual welding in hazardous environments.

Part of the automatic welding is to use the automatic welding trolley to hold the swing welding torch to complete the work, and the swing welding torch is roughly divided into a mechanical swing welding gun and an electromagnetic swing welding gun, and the application mainly uses an electromagnetic swing welding gun.

At present, the electromagnetic swing welding torch in practical application has the electromagnet and the spring installation position susceptible to the high temperature generated by welding and the spatter of the welding slag. The long-term use will cause the magnetic force and the elastic force to decrease, and the swing amplitude is affected, thereby affecting the welding. Quality; and the welding speed is restricted by various defects in its internal structure, which leads to the phenomenon of “biting” when the welding speed is accelerated. If such quality problems occur, it must be re-welded.

At the same time, the fixed mode of the cable on the welding gun is also a big problem. If the external cable moves during the welding process, the force will directly affect the stability of the welding and the amplitude of the welding gun, thus affecting the welding quality.

A brief summary of the invention is set forth below in order to provide an understanding of certain aspects of the invention. It should be understood that this summary is not an exhaustive overview of the invention. It is not intended to identify key or critical aspects of the invention, and is not intended to limit the scope of the invention. Its purpose is to present some concepts in a simplified form as a more detailed.

An object of the present invention is to provide a oscillating welding torch in which the oscillating device of the welding torch can make the molten pool of the molten metal and the welding material more uniform and achieve a desired welding effect.

An object of the present invention is to provide a oscillating welding torch, wherein the oscillating mechanism of the oscillating welding torch effectively avoids the influence of high temperature, splashing and welding slag generated by the welding on the electromagnet, and can prevent the welding speed while preventing " The occurrence of the undercut phenomenon greatly extends the service life of the product.

An object of the present invention is to provide a oscillating welding torch in which a cable fastener is embedded in a tail of a welding gun and then locked with a screw, thereby preventing the internal swing of the welding gun from being affected by the force of the external cable.

In order to achieve the above object, the present invention provides a oscillating welding torch including a casing, a oscillating generating member, a welding gun shaft assembly, and a control device for controlling the oscillating generating member, wherein the oscillating generating member includes an electromagnet and a oscillating transmission device, and the oscillating transmission device One end is an armature, the armature is slidably connected with the electromagnet, and the other end of the oscillating transmission is placed in the casing and axially connected with the casing; wherein the welding gun shaft assembly is placed in the casing and fixedly connected with the other end of the oscillating transmission .

In an embodiment of the invention, the control device for controlling the swing generating member is a swing adjusting block, and the upper end of the swing adjusting block is provided with a circuit board compartment and a circuit board disposed in the circuit board compartment, and the front end is provided for controlling the swing A swing regulating valve of a swinging amplitude of a transmission, wherein the swing adjusting block is installed at an upper portion of a position of the swinging transmission outside the casing.

In an embodiment of the invention, the welding gun shaft assembly comprises a swinging rod, a blocking piece, a welded pipe connecting pipe and a conductive nozzle, and the swinging rod is a hollow tubular structure, wherein the welding rod is in a hollow tubular structure The outer wall of the position is fixedly connected with the other end of the swing transmission device, and the front end of the block is mounted with a blocking piece, and the front end of the blocking piece is connected with the welded pipe connecting pipe, and the front end of the welded pipe connecting pipe is connected with the connecting tip.

In an embodiment of the invention, the swing transmission device comprises a swing support shaft, a linkage short rod, a linkage insulating sleeve, a linkage swing rod, a return spring rod, a spring, and an armature, wherein the swing support shaft is fixedly connected on both sides of the swing rod, The upper part of the swinging rod is fixedly connected with the linked short rod, and the short rod is connected to fix the interlocking insulating sleeve, and the other end of the interlocking insulating sleeve is connected with the interlocking swing rod, the return spring rod is sleeved in the spring, and one end of the return spring rod and the linked swing pendulum The rods are connected and the other end is connected to the armature, and the armature and the electromagnet are slidably connected.

In an embodiment of the invention, the swinging transmission device is bent at a right angle at the linkage swinging lever.

In an embodiment of the invention, a cable fastener mounted to the rear end of the casing is also included.

In an embodiment of the invention, the cable fastener is a mirror-symmetrical upper and lower two parts, each of which is a semi-cylindrical cavity in the middle, and the two sides of the cavity are fixed areas provided with bolt holes, and each component is followed by The semi-cylindrical cavity wall of the end and the fixing zone provided with the bolt hole are thick and block-shaped, and the front end has a small thickness and a sheet shape, so that the combination of the semi-cylindrical cavity wall of the front end and the fixing zone provided with the bolt hole forms. Insert.

100‧‧‧ gun body left shell

110‧‧‧ screw holes

120‧‧‧ screw holes

130‧‧‧ screw holes

140‧‧‧ screw holes

150‧‧‧ round hole

160‧‧‧Area

200‧‧‧ gun body right shell

210‧‧‧ screw holes

220‧‧‧ screw hole

230‧‧‧ screw holes

240‧‧‧ screw holes

310‧‧‧Contact tip

321‧‧‧Cable fasteners

322‧‧‧Cable fasteners

330‧‧‧weld pipe connecting pipe

341‧‧‧Block piece fixing nut

342‧‧‧Block

350‧‧‧swing rod

351‧‧‧Swing support shaft

352‧‧‧ linkage support ring

353‧‧‧ linkage short rod

354‧‧‧Intake pipe

410‧‧‧weld nozzle

420‧‧‧Insulated insulation seat

430‧‧‧Fixed casing

500‧‧‧electromagnet

510‧‧‧Swing adjustment block

511‧‧‧Swing control valve

512‧‧‧Circuit board

520‧‧‧electromagnet holder

530‧‧‧Electromagnetic shell

551‧‧‧ linkage insulation sleeve

552‧‧‧ linkage swing

553‧‧‧Reset spring rod

554‧‧‧Spring

555‧‧‧Architecture

The above and other objects, features and advantages of the present invention will become more <RTIgt; The components in the figures are merely illustrative of the principles of the invention. In the drawings, the same or similar technical features or components will be denoted by the same or similar reference numerals.

Fig. 1 is a perspective view showing the three-dimensional structure of the oscillating welding torch of the present invention.

Fig. 2 is a cross-sectional view of Fig. 1.

Fig. 3 is a schematic view showing the fixed installation structure of the oscillating transmission device and the welding gun shaft assembly of the oscillating welding torch of the present invention.

Figure 4 is a schematic view showing the structure of the oscillating welding torch casing of the present invention.

Figure 5: Schematic diagram of the left shell structure of the gun body in the casing shown in Figure 4.

Figure 6 is a schematic view showing the structure of the cable fastener in the swing welding torch of the present invention.

Figure 7: The exploded view of Figure 6.

The following examples are presented to illustrate embodiments of the invention. The elements and features described in one diagram or one implementation mode of the invention may be combined with the elements and features illustrated in one or more other figures or embodiments. It should be noted that, for the sake of clarity, representations and descriptions of components or processes known to those of ordinary skill in the art that are not related to the present invention are omitted from the drawings and the description.

Please refer to FIG. 1 , which is a schematic perspective view of a swing welding gun of the present invention. As shown in FIG. 1, the oscillating welding torch includes a casing, a swing generating member, a swing adjusting block 510, a torch shaft assembly, and cable fasteners 321, 322. The casing is composed of a mirror-symmetrical gun body left casing 100 and a gun body right casing 200. The casing is used to protect the internal structure and provide the supporting function required for the swing. The swing generating member is composed of an electromagnet 500 and a swinging transmission device, and the swinging transmission device is installed inside the casing.

The swing adjusting block 510 is mounted on the upper part of the position of the swinging transmission outside the casing, and has a circuit board compartment 512 and a circuit board (not shown) disposed in the circuit board compartment 512 at the upper end, and the front end is provided with a control swinging device. A swing adjustment valve 511 having a swing amplitude. The swing adjusting block 510 has four screw holes at the lower portion for respectively connecting the left and right housings 100, 200 of the gun body.

The electromagnet 500 is fixedly mounted to the electromagnet holder 520, and blocks the influence of high temperature, splash, solder slag, etc. on the electromagnet 500 during welding. The electromagnet case 530 is externally mounted on the electromagnet 500, and is also used to protect the electromagnet 500. The electromagnet fixing base 520 is fixed on the casing, and the electromagnet 500 is converted into the mechanical energy required for the welding gun to oscillate through a certain frequency of electric energy provided by the swing circuit.

The fixing sleeve 430 has four screw holes at one end, which are respectively fixed to the left and right shells of the gun body The other end has a screw inside for connecting the insulating and insulating seat 420. The other end of the insulating and insulating seat 420 is threaded for connecting the torch nozzle 410.

The upper and lower parts of the cable fasteners 321 and 322 can be inserted into the tail of the gun body, and then fastened with screws for fastening the cable while fixing the left and right shells 100 and 200 of the gun body.

2 is a cross-sectional view of FIG. 1 , and FIG. 3 is a schematic view showing a fixed installation structure of a swinging transmission device and a welding gun shaft assembly of the swing welding gun of the present invention. As shown in FIGS. 2 and 3, the swing generating member includes an electromagnet 500 and a swing transmission. The oscillating transmission is bent at a right angle, and one end of the oscillating transmission is an armature 555, and the other end of the oscillating transmission is placed in the casing and axially coupled to the casing.

The oscillating transmission device specifically includes a swing support shaft 351, a linkage short rod 353, a linkage insulating sleeve 551, a linkage swing rod 552, a return spring rod 553, a spring 554, and an armature 555. The swing support shaft 351 is connected and fixed to both sides of the swing lever 350, and the upper portion of the swing lever 350 is connected and fixed to the interlocking short rod 353. The interlocking short rod 353 is connected to the fixed interlocking insulating sleeve 551, and the other end of the interlocking insulating sleeve 551 is connected to the interlocking swinging rod 552. The return spring rod 553 is sleeved in the spring 554, one end of which is connected to the interlocking swing rod 552, and the other end is connected to the armature 555. The armature 555 and the electromagnet 500 are slidably coupled for converting electrical energy into mechanical oscillations.

The welding gun shaft assembly comprises a swinging rod 350, a blocking piece 342, a blocking piece fixing nut 341, a welded pipe connecting pipe 330 and a contact tip 310. The swinging lever 350 is a hollow tubular structure, and the left and right sides of the outer wall of the intermediate position are fixedly coupled to the swinging support shaft 351 of the swinging transmission. The blocking piece fixing nut 341 fixes the blocking piece 342 to the front end of the swinging lever 350. The barrier sheet 342 is a sheet-like structure for blocking the backflow of carbon dioxide and splashing of the slag into the cavity. An intake pipe 354 is attached to the rear end of the swing lever 350, and the intake pipe 354 is connected to a cable carbon dioxide gas pipe (not shown). The front end of the barrier piece fixing nut 341 is connected to the welded pipe connecting pipe 330, and the front end of the welded pipe connecting pipe 330 is connected to the connecting tip 310.

A swinging support is fixedly connected to both ends of the swing support shaft 351 of the swing transmission device The brace 352, the swing support ring 352 is axially coupled to the inner wall of the casing, so that the torch shaft assembly constitutes a lever pivoted by the swing support ring 352.

When the swing circuit supplies a swing signal of a certain frequency to the electromagnet 500, the armature 555 pulls the spring rod 553 and the spring 554 returns to the spring rod 553, so that the interlocking swing rod 552 follows. Then, through the linkage structure and the support structure, the swinging rod 350 is swung, and then the welded pipe connecting pipe 330 connected thereto is connected, and the conductive nozzle 310 connected to the welded pipe connecting pipe 330 is also swung, thereby realizing the swing of the welding torch shaft assembly. purpose.

The advantage of this architecture is that the armature movement amplitude of the electromagnet 500 is reduced to 0.4 mm-0.6 mm due to the lever linkage structure, thereby reducing the axial stroke length of the electromagnet 500, and the axial stroke strength of the electromagnet 500 is also reduced. When it is 5 N or less, the service life of the electromagnet 500 is greatly improved, and the volume of the electromagnet 500 is reduced, so that the entire torch is miniaturized.

Please refer to FIG. 4 , which is a schematic diagram of the structure of the swing welding gun casing of the present invention, and FIG. 5 is a schematic view of the left shell structure of the gun body in the casing shown in FIG. 4 . As shown in FIGS. 4 and 5, the oscillating torch casing includes a combination of a gun body left casing 100 and a gun body right casing 200 in mirror symmetry. The screw hole 110/210 is a fixing screw hole of the fixing sleeve 430 on the left and right shells, the screw hole 120/220 is a fixing screw hole of the swing adjusting block 510 on the left and right shells, and the screw hole 130/230 is an electromagnet fixing seat 520. In the fixing screw holes on the left and right shells, the screw holes 140/240 are fixing screw holes of the cable fasteners 321, 322 on the left and right shells. The area 160 is a space for accommodating the barrier sheet fixing nut 341 and the blocking piece 342, and the circular hole 150 is a circular hole for accommodating the fixed swing support ring 352.

Please refer to FIG. 6 and FIG. 7 respectively, which are respectively a schematic diagram of the cable fastener structure in the swing welding torch of the present invention and an exploded view thereof. As shown in Fig. 6 and Fig. 7, the cable fastener is composed of upper and lower parts 321 and 322 which are mirror-symmetrical, and each part 321/322 has a semi-cylindrical cavity in the middle, and the sides of the cavity are symmetrical. The fixing area is provided with bolt holes, and the semi-cylindrical cavity wall at the rear end of each member 321/322 and the fixing area provided with bolt holes are thick and block-shaped, and the front end has a small thickness and a sheet shape, so that the front end is semicircular. The combination of the cylindrical cavity wall and the fixing area provided with the bolt hole forms an insert, and the cable fastener is fixed in the cable and then embedded in the tail of the welding machine casing, and then locked with a screw, so as to avoid affecting the inside of the welding torch due to the force of the external cable. The swing.

At the beginning of the operation of the oscillating welding torch, the welding wire is fixed in the contact nozzle 310, the carbon dioxide vent pipe is kept open, and the power is turned on. The circuit board mounted on the swing adjusting block 510 outputs an electromagnetic signal of a certain frequency to the electromagnet of the oscillating generating member. 500, the electromagnet 500 is operated to cause the armature 555 connected thereto to generate a swing of a specific frequency, the swing regulating valve 511 can adjust the swing amplitude, and the swinging transmission changes the direction of the mechanical swing and transmits the mechanical swing to the torch shaft assembly. The wire that is mounted at the front end of the torch shaft assembly is subjected to a specific frequency and swing of the swing during the welding work.

The structure of the oscillating welding torch of the invention effectively avoids the influence of the high temperature, the splash and the welding slag generated during the welding on the electromagnet 500 and the spring 554, and ensures the ideal welding quality after long-term use, and greatly prolongs the use of the product. The longevity prevents the occurrence of the "biting edge" phenomenon and greatly improves the production efficiency while ensuring the welding quality.

In the apparatus and method of the present invention, it will be apparent that the various components and steps may be decomposed, combined, and/or disassembled and recombined. These decompositions and/or recombinations should be considered as equivalents to the invention. It should also be noted that the steps of performing the above-described series of processes may naturally be performed in chronological order in the order illustrated, but need not necessarily be performed in chronological order. Some steps can be performed in parallel or independently of each other. Meanwhile, in the above description of the specific embodiments of the present invention, features described and/or illustrated with respect to one embodiment mode may be used in the same or similar modes in one or more other implementation modes, and in other implementation modes. Features are combined or replaced with features in other implementation modes.

It should be emphasized that the term "comprising" or "comprises" or "comprises" or "comprises" or "comprising" or "comprising" or "comprising" or "comprising" or "comprising"

Having described the invention and its advantages, it is understood that various changes, substitutions and alterations may be made without departing from the spirit and scope of the invention as defined by the appended claims. Further, the scope of the present application is not limited to the specific embodiments of the processes, apparatuses, means, methods and steps described in the specification. It will be readily apparent to those skilled in the art from this disclosure that, in accordance with the present invention, existing and future developments that perform substantially the same functions as the corresponding embodiments described herein or obtain substantially the same results can be used. Process, equipment, means, method or step. Therefore, the appended claims are intended to cover such a process, apparatus, means, methods, or steps.

100‧‧‧ gun body left shell

200‧‧‧ gun body right shell

310‧‧‧Contact tip

321‧‧‧Cable fasteners

322‧‧‧Cable fasteners

410‧‧‧weld nozzle

420‧‧‧Insulated insulation seat

430‧‧‧Fixed casing

500‧‧‧electromagnet

510‧‧‧Swing adjustment block

511‧‧‧Swing control valve

512‧‧‧Circuit board

520‧‧‧electromagnet holder

530‧‧‧Electromagnetic shell

Claims (7)

A swing welding gun comprising a casing, a swing generating member, a welding gun shaft assembly and a control device for controlling the swing generating member, wherein the swing generating member comprises an electromagnet and a swinging transmission, and one end of the swinging transmission is an armature, an armature and an electromagnetic The iron sliding connection, the other end of the oscillating transmission is placed in the casing and axially coupled to the casing; wherein the torch shaft assembly is placed in the casing and fixedly coupled to the other end of the oscillating transmission. The swing welding torch of claim 1, wherein the control device for controlling the swing generating member is a swing adjusting block, and the upper end of the swing adjusting block is provided with a circuit board compartment and a circuit board placed in the circuit board compartment. And the front end is provided with a swing regulating valve for controlling the swinging amplitude of the swinging transmission, wherein the swing adjusting block is installed at an upper portion of the position of the swinging transmission outside the casing. The oscillating welding torch of claim 1, wherein the welding gun shaft assembly comprises a swinging rod, a blocking piece, a welded pipe connecting pipe and a conductive nozzle, wherein the swinging rod is a hollow tubular structure, the outer wall of the intermediate position and the swinging transmission device The other end of the fixed connection is mounted with a blocking piece at the front end thereof, and the front end of the blocking piece is connected to the welded pipe connecting pipe, and the front end of the welded pipe connecting pipe is connected to the conductive nozzle. The oscillating welding gun of claim 3, wherein the oscillating transmission device comprises a oscillating support shaft, a linkage short rod, a linkage insulating sleeve, a linkage swing rod, a return spring rod, a spring, an armature, wherein the swing support shaft is connected Fixed on the two sides of the swinging rod, the upper part of the swinging rod is fixedly connected with the interlocking short rod, the interlocking short rod is connected to fix the interlocking insulating sleeve, and the other end of the interlocking insulating sleeve is connected with the interlocking swing rod, the reset The spring rod is sleeved in the spring, one end of the return spring rod is connected to the linkage swing rod and the other end is connected to the armature, and the armature and the electromagnet are slidably connected. The oscillating welding torch of claim 4, wherein the oscillating transmission is bent at a right angle at the interlocking swing. The swing welding torch described in claim 1 of the patent application is further included in the machine. Cable fasteners at the rear of the shell. The oscillating welding torch of claim 6, wherein the cable fastener is a mirror-symmetrical upper and lower parts, each of which is a semi-cylindrical cavity, and the two sides of the cavity are fixed by bolt holes. Zone, and the semi-cylindrical cavity wall at the rear end of each component and the fixing zone provided with bolt holes are thick and massive, and the front end has a small thickness and a sheet shape, so that the front end of the semi-cylindrical cavity wall and the bolt are provided. The combination of the fixed areas of the holes forms an insert.