CN2701570Y

CN2701570Y - Novel welding gun

Info

Publication number: CN2701570Y
Application number: CN 200320130262
Authority: CN
Inventors: 雷平
Original assignee: Individual
Current assignee: Individual
Priority date: 2003-12-04
Filing date: 2003-12-04
Publication date: 2005-05-25
Anticipated expiration: 2013-12-04

Abstract

The utility model relates to a novel welding gun, belonging to the welding equipment; the novel welding gun comprises a cable conductor, a gun head and a gun base; one end of the cable conductor is connected with the gun head, and the other end is connected with the gun base. The center of the cable conductor is a wire feeding flexible pipe whose outer layer is orderly provided with a guide pipe of the wire feeding flexible pipe and a sealed pipe; the outer layer of the wire feeding flexible pipe is provided with an air pipe whose inwall is provided with a plurality of projected spacing ribs; the gun head comprises a bent pipe, a cable joint and a connecting nut; a plurality of conduits are arranged at the inwall of the cable joint the connecting nut and the connecting place of the bent pipe and the connecting nut; the guide hole of the wire feeding flexible pipe and the connecting joint of the wire feeding flexible pipe are arranged on the gun base. A joint washer is arranged in the guide hole of the wire feeding flexible pipe arranged on the gun base, and the multiple filtration layers are arranged in the connecting joint of the wire feeding flexible pipe. The fiber path system and the gas path system of the welding gun are split flowing; the problems of gas leakage, backflow, blocking up of the wire feeding flexible pipe, uneven velocity of movement of the solder wire, etc. that constantly appear during the production process are thoroughly solved.

Description

Novel welding gun

(1) technical field: novel welding gun belongs to welding equipment (B23K; H01B).

(2) background technology: the MG series welding gun of producing both at home and abroad at present, all be that the Silk Road system and air-channel system are shared, be prone to following problem in normal operation: (1) is in a certain special angle when the rifle head, or moment is when rising to a certain height, cable is crooked acute variation to be taken place or impacted by extraneous object, when pushed by big external force, can occur the welding wire movement velocity suddenly accelerates or slows down, cause gas to flow backwards, stop, or the time big, the time little, the electric arc shakiness takes place, even current interruption, the excessive situation of splashing has a strong impact on welding quality and operating efficiency; When (2) welding gun seat upper wire feeding hose flexible pipe passes in the wire convey soft pipe pilot hole, if cooperate too tightly then pull out to come out when changing wire convey soft pipe, cause integral body to scrap, if take loose fit, then gas easily lets out from fit clearance, causes waste; (3) because welding wire is sent into the wire convey soft pipe endoporus to welding wire through the wire convey soft pipe connector through the wire feed rolls of wire feeding motor, the mechanical movement effect of silk pressing wheel, the copper plate of welding wire outer surface comes off easily in this process, welding wire moves in the wire convey soft pipe endoporus that copper plate is easier to come off, often cause welding wire in wire convey soft pipe, to stop up, influence the service life of wire feed rate and wire convey soft pipe; (4) bend pipe of welding gun head and attaching nut place, gas can enter the wire convey soft pipe pilot hole from the gap of the spring steel wire of the wire convey soft pipe in the gun barrel, occurs gas often at the welding job state and flows backwards; (5) conductive copper wire is owing to use in line mode coiling in the cable, and the sensation cable is more stiff during use, and soft property is poor, the welding gun inconvenient operation; (6) protective layer of cable adopts the smooth gum sleeve of individual layer, and not wear-resisting, the class of insulation is not high, and when temperature Change, particularly in the winter time, the easy hardening of protective layer, aging, cracking have a strong impact on the insulation protection of cable; (7) being connected all to adopt and being threaded of rifle head and cable connector, its conductive area is little, and a silk mouthful junction is also easily loosening, causes the too high easy burn-out rifle of temperature rise head bend pipe.

(3) summary of the invention:

Problem to be solved in the utility model is to overcome above defective and a kind of novel welding gun is provided, this welding gun gas passage and wire feed passage are separately strict, can thoroughly solve problems such as the gas that often occurs in process of production leaks, refluence, and wire convey soft pipe stops up, the welding wire movement velocity is inhomogeneous.Its technical scheme is as follows:

It comprises cable, rifle head and gun platform, and an end of cable is connected with the rifle head, and the other end is connected with gun platform.The center of cable is a wire convey soft pipe, and the endoporus of wire convey soft pipe is the wire feed hole, and the skin of wire convey soft pipe has tracheae, and at the outer wall distribution conductive copper wire of tracheae, conductive copper wire is coated by insulating barrier; The rifle head comprises that bend pipe, cable connector, attaching nut, current divider, conduction chew and nozzle, and bend pipe one end is by cable connector and attaching nut's stube cable line, and the other end is equipped with current divider, conduction is chewed and nozzle, and the bend pipe outer wall is with insulation tube; Wire convey soft pipe pilot hole, passage and wire convey soft pipe connector are arranged on the gun platform, and the wire convey soft pipe connector is positioned at the wire convey soft pipe pilot hole, and it connects wire convey soft pipe, and gun platform is connected with cable by the gun platform joint.Its key technology is: 1. the skin at wire convey soft pipe also has wire convey soft pipe guide pipe and sealed tube successively, and wire convey soft pipe guide pipe and wire convey soft pipe are slidingly matched; Inwall at tracheae has the spacing rib of many protrusions to withstand the outer wall of sealed tube, the conductive copper wire of the tracheae outer wall pleasant pipe coiling of shape in the shape of a spiral forms, the insulating barrier of coated with conductive copper wire is made of inner insulation layer and outer insulation, and two insulating barriers closely and be integrated; 2. the metal guide pipe is set in the bend pipe on the rifle head links to each other with current divider, have conduit at cable connector, attaching nut's inwall and at the outer wall of bend pipe and attaching nut's connecting place or at the inwall of insulation tube and attaching nut's connecting place, outer wall at current divider also has spiral channel, and tracheae communicates with cable connector and attaching nut's inside groove, the water jacket of bend pipe or the inside groove of insulation tube and the spiral channel of current divider; 3. be provided with seal washer in the wire convey soft pipe pilot hole on gun platform, the multiple filtration layer is set in the wire convey soft pipe connector.

Compared with prior art the utility model has following beneficial effect: (1) puts a spring hose as the wire convey soft pipe guide pipe at the wire convey soft pipe skin, and outside the wire convey soft pipe guide pipe, put sealed tube, the inwall of the tracheae that sealed tube is outer has the spacing rib of many protrusions, when guaranteeing that like this welding gun in working order, the rifle head is at any height of any angle, no matter how crooked cable is, when pushed by big external impacts, the effect of external force by the inner surface of trachea rib disperses along the outer wall of sealed tube, wire convey soft pipe is hit and reduces greatly, the protection wire convey soft pipe is indeformable, thereby guarantee welding wire uniform movement velocity in the wire feed hole, gas passage is also owing to there is the cross section of the support, particularly spacing rib of inner surface of trachea rib to be the circular arc of stream silk thread type, when the external force effect is pushed and remain unimpeded, gas passes through from the gap between the rib of tracheae, gas can not flow backwards, the cutout or the time big, the time little, but guarantee that air-flow is unimpeded, arc stability guarantees high-quality welding; (2) establish the metal guide pipe in the bend pipe on the rifle head, more help the protection and the replacing of wire convey soft pipe; On the cable connector on the rifle head, attaching nut and bend pipe or insulation tube, offer conduit respectively, tracheae and these conduits are connected, wire convey soft pipe guide pipe and sealed tube then are tightly connected with bend pipe, and gas can only be passed through by the tracheae crossheading, make gas passage and wire feed passage separately strict; The outer wall of current divider has spiral channel, and gas sprays twist from nozzle, and air-flow is unimpeded; (3) be provided with seal washer in the wire convey soft pipe pilot hole on gun platform and sealed tube closely cooperates, stop gas to pass through, but wire convey soft pipe can be free to slide in the wire convey soft pipe guide pipe again, gas can only be passed through by passage, gas leakage of wire convey soft pipe pilot hole and gas backward flow problem have been solved, make gas unimpeded, and be convenient for changing wire convey soft pipe equably from the ejection of rifle head; Be provided with filter course in the wire convey soft pipe connector on the gun platform, when welding wire when the wire convey soft pipe connector enters the wire feed hole, attachment above the welding wire can not be entered in the wire feed hole, make welding wire easier to be unimpeded, solve the stratum disjunction of coppered welding wire layer and the wire convey soft pipe blocking problem that foreign material cause, prolonged the life-span of wire convey soft pipe; (4) conductive copper wire adopts the screw type winding process in the cable, has overcome the stiffness index of cable, has increased the soft property of cable, makes the welding gun integrated operation more convenient; The skin of cable adopts inside and outside double hyer insulation layer, internal layer adopts the high toughness plastic alloy to make, and the outer rubber that adopts is made, and outer field outer surface is distributed with some salient points, strengthen its wearability, when skin was subjected to accidental damage, internal layer can be guaranteed security, had made full use of the different characteristics of two kinds of different materials, improved product quality greatly, both anti-aging, anti-again scald, scuffing have improved insulation protection grade and service life; (5) the rifle head adopts tapering to connect with being connected of cable connector, has increased conductive contact surfaces, has strengthened the firmness that connects, and makes the work electricity unimpeded, has reduced the temperature rise that contact resistance causes, the protection bend pipe is easy burn-out not.

(4) description of drawings:

Fig. 1 is the utility model structural representation;

Fig. 2 is the utility model Cable structure schematic diagram;

(5) specific embodiment:

Referring to accompanying drawing, the utility model comprises cable 9, rifle head and gun platform, and an end of cable is connected with the rifle head, and the other end is connected with gun platform.The center of cable 9 is wire convey soft pipes 15, and the endoporus of wire convey soft pipe 15 is wire feed holes 14, and the skin of wire convey soft pipe 15 has tracheae 18, and at the outer wall distribution conductive copper wire 20 of tracheae 18, conductive copper wire 20 is coated by insulating barrier; The rifle head comprises that bend pipe 6, cable connector 8, attaching nut 7, current divider 3, conduction chew 2 and nozzle 1, bend pipe 6 one ends are by cable connector 8 and attaching nut's 7 stube cable lines 9, the other end is equipped with current divider 3, conduction chews 2 and nozzle 1, and bend pipe 6 outer walls are with insulation tube 4; Wire convey soft pipe pilot hole 24, passage 25 and wire convey soft pipe connector 13 are arranged on the gun platform 11, and the wire convey soft pipe connector is positioned at the wire convey soft pipe pilot hole, and it connects wire convey soft pipe 15, and gun platform 11 is connected with cable 9 by gun platform joint 10.Its key technology is: 1. the skin at wire convey soft pipe 15 also has wire convey soft pipe guide pipe 16 and sealed tube 17 successively, and wire convey soft pipe guide pipe 16 adopts through the spring hose or the plastic tube of the metal coiling of specially treated and makes, and is slidingly matched with silk flexible pipe 15; Inwall at tracheae 18 has the spacing rib 19 of many protrusions to withstand the outer wall of sealed tube 17, and the cross section of spacing rib 19 is a circular arc.The conductive copper wire 20 of tracheae 18 outer walls pleasant pipe 18 coilings of shape in the shape of a spiral forms, the insulating barrier of coated with conductive copper wire 20 is made of inner insulation layer 21 and outer insulation 22, inner insulating layer 21 adopts the high toughness plastic alloy to make, external insulation layer 22 adopts rubber to make, external insulation layer 22 outer surfaces are distributed with salient point 23, two insulating barriers closely and be integrated; 2. metal guide pipe 5 is set in the bend pipe on the rifle head 6 links to each other with current divider 3, have conduit at cable connector 8, attaching nut's 7 inwall and at the outer wall of bend pipe 6 and attaching nut's connecting place or at the inwall of insulation tube 4 and attaching nut's connecting place, outer wall at current divider 3 has spiral channel, and tracheae 18 communicates with cable connector 8 and attaching nut's 7 inside groove, the water jacket of bend pipe 6 or the inside groove of insulation tube 4 and the spiral channel of current divider 3; Cable connector 8 is wedge shape, is tapering with the rifle head and is connected.3. be provided with the high cone seal packing ring 26 of high temperature resistant air-tightness in the wire convey soft pipe pilot hole 24 on gun platform, multiple filtration layer 27 is set in wire convey soft pipe connector 13.12 is that gas is chewed among the figure.

Claims

1, a kind of novel welding gun, comprise cable (9), rifle head and gun platform, one end of cable is connected with the rifle head, the other end is connected with gun platform, the center of cable (9) is wire convey soft pipe (15), and the endoporus of wire convey soft pipe (15) is wire feed hole (14), and the skin of wire convey soft pipe (15) has tracheae (18), at the outer wall distribution conductive copper wire (20) of tracheae (18), conductive copper wire (20) is coated by insulating barrier; The rifle head comprises bend pipe (6), cable connector (8), attaching nut (7), current divider (3), conducts electricity and chew (2) and nozzle (1), bend pipe (6) one ends are by cable connector (8) and attaching nut (7) stube cable line (9), the other end is equipped with current divider (3), conduction is chewed (2) and nozzle (1), and bend pipe (6) outer wall is with insulation tube (4); Wire convey soft pipe pilot hole (24), passage (25) and wire convey soft pipe connector (13) are arranged on the gun platform (11), the wire convey soft pipe connector is positioned at the wire convey soft pipe pilot hole, it connects wire convey soft pipe (15), gun platform (11) is connected with cable (9) by gun platform joint (10), it is characterized in that: 1. the skin at wire convey soft pipe (15) also has wire convey soft pipe guide pipe (16) and sealed tube (17) successively, and wire convey soft pipe guide pipe (16) is slidingly matched with wire convey soft pipe (15); Inwall at tracheae (18) has the spacing rib of many protrusions to withstand the outer wall of sealed tube (17), the conductive copper wire (20) of tracheae (18) the outer wall pleasant pipe of shape (18) coiling in the shape of a spiral forms, the insulating barrier of coated with conductive copper wire (20) is made of inner insulation layer (21) and outer insulation (22), and two insulating barriers closely and be integrated; Metal guide pipe (5) 2. is set in the bend pipe on the rifle head (6) to link to each other with current divider (3), have conduit at cable connector (8), attaching nut's (7) inwall and at the outer wall of bend pipe (6) and attaching nut's connecting place or at the inwall of insulation tube (4) and attaching nut's connecting place, outer wall at current divider (3) has spiral channel, and tracheae (18) communicates with cable connector (8) and attaching nut's (7) inside groove, the water jacket of bend pipe (6) or the inside groove of insulation tube (4) and the spiral channel of current divider (3); 3. be provided with seal washer (26) in the wire convey soft pipe pilot hole (24) on gun platform, multiple filtration layer (27) is set in wire convey soft pipe connector (13).

2, according to the described novel welding gun of claim 1, it is characterized in that: the cross section of spacing rib (19) is a circular arc.

3, according to the described novel welding gun of claim 1, it is characterized in that: inner insulating layer (21) adopts the high toughness plastic alloy to make, and external insulation layer (22) adopts rubber to make.

4, according to the described novel welding gun of claim 3, it is characterized in that: external insulation layer (22) outer surface is distributed with salient point (23).

5, according to the described novel welding gun of claim 1, it is characterized in that: seal washer (26) is a taper washer.

6, according to the described novel welding gun of claim 1, it is characterized in that: cable connector (8) is wedge shape, is tapering with the rifle head and is connected.

7, according to the described novel welding gun of claim 1, it is characterized in that: wire convey soft pipe guide pipe (16) adopts spring hose or plastic tube to make.