CN2305268Y

CN2305268Y - New structure for gas welding gun

Info

Publication number: CN2305268Y
Application number: CN 97222278
Authority: CN
Inventors: 高进雄
Original assignee: KANGWU ENTERPRISE CO Ltd
Current assignee: KANGWU ENTERPRISE CO Ltd
Priority date: 1997-09-15
Filing date: 1997-09-15
Publication date: 1999-01-27
Anticipated expiration: 2007-09-15

Abstract

The utility model provides a new structure for gas welding guns, which is composed of a welding gun body, an ignition seat and a soldering iron seat. The utility model is characterized in that a fire cutting device is provided with a positioning rod, a shaft rod, a stop sheet, a regulating button and a torsion spring, the regulating button is extended with a convex rod in the radial direction, the torsion spring is sheathed on the shaft rod, the two ends of the torsion spring are respectively fixed on the convex rod and the positioning rod, the stop sheet is arranged on a nozzle outlet point, the ignition seat comprises a hollow sleeve pipe, a fire jetting head and a temperature-resistant element, and ventilating holes are arranged on the sleeve pipe. The bottom end of the fire jetting head and the front end of a gas guide pipe are correspondingly arranged on the same axial line, and a proper distance is kept between the bottom end of the fire jetting head and the front end of the gas guide pipe. The fire cutting device can directly block a butane gas outlet, and can rapidly extinguish fire. The structure of the ignition seat is simplified, and the manufacturing cost can be reduced.

Description

Gas welding gun new construction

The utility model relates to a kind of gas flame welder, particularly a kind of welding gun of gas flame welding.

Existing welding gun is a fuel with gas (butagas), utilizes the catalyst mode of heating, as work such as field maintenance, circuit board joint, mosaic glasses, is well-known already.Wherein welding gun produces spark with electronic ignition mode, cooperate gas and Air mixing gas, promptly causing flame takes fire, yet catalyst directly heats with flame for a long time, the very low and fragile catalyst function of the thermal efficiency, so when catalyst arrives reaction temperature, then should rapidly naked light be extinguished, after naked light extinguishes, the catalyst that the butagas bump that continues to be disengaged by welding gun inside has generated heat, the flameless combustion effect produces thereupon, makes this catalyst continue to give birth to heat, up to certain temperature range, implement welding job in order to the front end soldering tip.

As shown in Figure 1, it is a kind of traditional gas welding gun, the gas gaseous mixture that ignites and disengage internally with outside burning things which may cause a fire disaster, after waiting to be arranged on the catalyst heat effect of welding gun front end, flame is put out from outside with the people again, to reach the purpose of cutoff, this kind is with the cutoff of air blowing mode, must blow when the air-flow of flame acquires a certain degree, cutoff really, and in the process of blowing, expend very much strength.

With reference to Fig. 2, be to disclose a kind of gas welding gun in No. 4552124, the United States Patent (USP), its gas skirt directly links to each other with ignition tube A, on gas skirt appropriate location, offer passage B, corresponding passage B offers through hole C in shell, air can enter in the gas skirt from through hole C and passage B, and and the gas skirt in butagas mix, after igniting, can be at head-end ignition device A place pilot flame, the cutoff method of this welding gun is to carry out with a cutoff device, and the cutoff device is connected the trace E that extends to housing exterior with choke tube D and is formed by a choke tube D who is folded between gas skirt and the shell, order about choke tube D and block through hole on the shell to promote trace E, stop air to enter in the shell, air can't be mixed with butagas, reach the purpose of cutoff; But, when reality was used, the cutoff poor effect of this cutoff device can not be broken off flame immediately, could put out a fire fully after must waiting for a period of time, even also can't put out a fire sometimes, its reason is that big gap is arranged between choke tube and the shell, so that air is intercepted outside shell, so must be very accurate on manufacturing dimension, do not allow mistake, thereby increased manufacture difficulty and cost.

Shown in Figure 3, it is another kind of traditional gas welding gun, its cutoff device is directly to be located at gas skirt G outer rim with collar F ring, to block the airport 1G that offers on the gas skirt G, to reach the cutoff purpose, it and above-mentioned United States Patent (USP) have same problem, and be very high to the quality of fit requirement of collar F and gas skirt G, cooperate too pine meeting gas leakage, cooperate too tightly then operation to have some setbacks.

In addition; the sparking mode of gas welding gun mainly is two

ignition lead

1H, 2H with igniter H configuration; wherein an ignition lead 2H connects and is located on the conductive metal assembly that the gas welding gun is inner and igniter I communicates; another then self-ignition device H lower edge penetrate inside extend to the upper end after; derive a suitable length again to become arcing pin 11H; can implement igniting; for preventing that ignition lead 1H from burnt by flame after igniting, then use to do protection at ignition lead 1H outer rim cladding one deck heatproof material 3H (as pottery or iron Long Guan etc. not).The used sparking mode of this gas welding gun also must be dug on the ignition seat and be established a perforation, wears for ignition lead, bothers on making, and is nested with the heatproof material outside ignition lead, also can increase cost.

The purpose of this utility model is that a kind of gas welding gun new construction will be provided, and it can be really and naked light is extinguished.The manufacturing dimension required precision reduces, simplified manufacturing process, simple cost-saving.

The utility model is achieved in that gas welding gun new construction comprises the cutoff device, be characterized in that the cutoff device is made up of a positioning rod, an axostylus axostyle, the adjusting knob that radially extends from the axostylus axostyle two ends respectively and stop tab and a torque spring, wherein the self-regulation button radially extends a nose bar, torque spring is that snare is on axostylus axostyle, and two ends are installed in respectively on nose bar and the backstay, and stop tab is positioned at nozzle exit front end; The seat of getting angry is installed in the Temperature Resistant Element that the firn-jet head and in the sleeve pipe is folded between sleeve pipe and the firn-jet head and forms by connecing the hollow sleeve, that is located at housing one end, offer a plurality of passages on its middle sleeve, terminal and the gas catheter front end correspondence of firn-jet head and maintains a suitable distance on same axis.

Two ignition leads that igniter is extended, one connects and is located at the firn-jet head lower edge, and another directly is connected on the sleeve pipe, and sleeve pipe is made with tool conductive metal material, and the sleeve pipe front end bends inwards and forms a guide card that is embedded on the Temperature Resistant Element inner ring surface.After pushing igniter, form spark between guide card and the firn-jet head, can ignite from the gas gaseous mixture of firn-jet head ejection.

The utility model is after igniting, after treating that catalyst produces fuel factor, can utilize the cutoff device directly to intercept and block the butagas outlet, stop butagas and air to mix, can be really and naked light is extinguished, its structure is as long as stop tab and butagas outlet remain on a suitable distance, there is not the very restriction of precision of size during fabrication of traditional gas welding gun, and effect is more certain than traditional structure, does not have tradition to get angry seat and digs and establishing perforation and penetrate its inside for ignition lead by lower edge, derives a suitable length again to become the structure of arcing pin, more simple on making, in addition, also needn't be again in ignition lead line outer rim cladding heatproof material, simplified structure is saved cost.

The concrete structure of utility model is by providing with embodiment and accompanying drawing thereof.

Fig. 1 is the use schematic diagram of traditional gas welding gun.

Fig. 2 is the cross-sectional schematic () of traditional gas welding gun.

Fig. 3 is the cross-sectional schematic (two) of traditional gas welding gun.

Fig. 4 is the utility model gas welding gun new construction combination cross-sectional schematic.

Fig. 5 is that the utility model gas welding gun new construction axle is surveyed decomposing schematic representation.

Fig. 6 is the cross-sectional schematic that Fig. 4 interrupts firearm.

Fig. 7 is that Fig. 4 interrupts firearm igniting back action schematic diagram.

Consult Fig. 4, gas welding gun new construction includes a welding gun body 1, connects the flatiron seat 3 that the ignition seat 2, that is located on the welding gun body 1 is configured in ignition seat 2 front ends, a catalyst 31 is set in the flatiron seat 3, and establishes a plumb joint 4 in preceding termination.

In the housing 11 of welding gun body 1, establish a fuel chambers 12 that is equipped with gas (butagas), connect on the fuel chambers 12 and establish a gas catheter 13 that extends to outside the housing 11, one regulating the qi flowing in the channels button 15, can wherein also establish an igniting device 16 and a cutoff device 17 from the spray volume that goes out air cock 14 and gas of gas catheter 13 front end nozzles 131 ejections in order to control gas.

Simultaneously, with reference to Fig. 4,5, get angry seat 2 by connecing the hollow sleeve 21 that is located at housing 1 one ends, one is installed in the Temperature Resistant Element 23 (being generally pottery) that firn-jet head 22 and in the sleeve pipe 21 is folded between sleeve pipe 21 and the firn-jet head 22 forms, offer a plurality of passages 211 on the sleeve pipe 21, firn-jet head 22 ends and nozzle 131 correspondences are on same axis, and maintain a suitable distance, igniter 16 extended two ignition leads 161,162 (being respectively both positive and negative polarity), one connects to be put at firn-jet head 22 lower edges, opposite side directly is connected on the sleeve pipe 21, sleeve pipe 21 is made by the conductive metal material, sleeve pipe 21 front ends bend inwards and form a guide card 212 that is embedded on Temperature Resistant Element 23 inner ring surfaces, mat sleeve pipe 21 direct conductive electric currents, after pushing igniter 16, then can produce spark between firn-jet head 22 and the guide card 212, cooperate the gas gaseous mixture of ejection in firn-jet head 22, promptly form flame.This structure of getting angry seat 2 is made simple than traditional igniter (as Fig. 3), save cost.

With reference to Fig. 4,6, cutoff device 17 is by a positioning rod 171, an axostylus axostyle 172, the adjusting knob 173 and the stop tab 174 of radially extending from axostylus axostyle 172 two ends respectively, an and torque spring 175 formations, adjusting knob 173 radially also extends a nose bar 176, torque spring 175 snares are installed in respectively on nose bar 176 and the backstay 171 on the axostylus axostyle 172 and two ends, stop tab 174 is positioned at nozzle 131 exit front ends, promptly just is folded between nozzle 131 and firn-jet head 22 ends (as Fig. 4); Fig. 6,7 for another example, when being that adjusting knob 173 is pulled in the axle center rotation with axostylus axostyle 172, interlock stop tab 174 simultaneously, and get back to original position automatically because of the restoring force of torque spring 175, and on the stroke that stop tab 714 is rotated, can block butagas nozzle 131 front ends; After igniting, treat catalyst 31 heat produce fuel factor after, can utilize cutoff device 17 directly to intercept butagas and air and mix, can be really and naked light is extinguished, directly be sprayed directly on to then and carry out flameless combustion on the catalyst with butane mixture gase.

Claims

1. gas welding gun new construction, form by welding gun body (1), ignition seat (2) and flatiron seat (3), establish a fuel chambers (12) in the housing (11) of welding gun body (1), connect on it and establish a gas catheter (13) that extends to outside the housing (11), and establish control nozzle (131) go out air cock (14), regulating the qi flowing in the channels button (15), igniter (16) and cutoff device (17), it is characterized in that:

A. cutoff device (17) is made up of a positioning rod (171), an axostylus axostyle (172), the adjusting knob (173) that radially extends from axostylus axostyle (172) two ends respectively and stop tab (174) and a torque spring (175), wherein self-regulation button (173) radially extends a nose bar (176), torque spring (175) snare is gone up and two ends are installed in respectively on nose bar (176) and the backstay (171) at axostylus axostyle (172), and stop tab (174) is positioned at nozzle (131) exit front end;

B. the seat (2) of getting angry is installed in the Temperature Resistant Element (23) that the firn-jet head (22) and in the sleeve pipe (21) is folded between sleeve pipe (21) and the firn-jet head (22) and forms by connecing the hollow sleeve (21), that is located at housing (11) one ends, offer a plurality of passages (211) on its middle sleeve (21), terminal and gas catheter (13) the front end correspondence of firn-jet head (22) and maintains a suitable distance on same axis.

2. gas welding gun new construction according to claim 1, it is characterized in that two ignition leads (161,162) that igniter (16) is extended, one connects to be put at firn-jet head (22) lower edge, another directly is connected on the sleeve pipe (21), sleeve pipe (21) is made with tool conductive metal material, and sleeve pipe (21) front end bends inwards and forms a guide card (212) that is embedded on Temperature Resistant Element (23) inner ring surface.