CN202726288U

CN202726288U - Electric conduction nozzle of submerged arc welding machine

Info

Publication number: CN202726288U
Application number: CN 201220430653
Authority: CN
Inventors: 曹再华
Original assignee: ZHEJIANG JUBA WELDING EQUIPMENTS MANUFACTURING Co Ltd
Current assignee: ZHEJIANG JUBA WELDING EQUIPMENTS MANUFACTURING Co Ltd
Priority date: 2012-08-28
Filing date: 2012-08-28
Publication date: 2013-02-13
Anticipated expiration: 2022-08-28

Abstract

The utility model relates to an electric conduction nozzle of a submerged arc welding machine. The utility model aims to solve the technical problems that the electric conduction nozzle of the provided submerged arc welding machine is simple in structure, and partial parts can be changed according to the damage condition of the electric conduction nozzle so as to realize the purpose of lowering the use cost. The technical scheme for solving the problem is that the electric conduction nozzle of the submerged arc welding machine is characterized by comprising a head part and a handle part which are respectively provided with an axial through hole and are coaxially connected with each other through screw threads, wherein the two sections of through holes are connected with each other to form a wire hole which is adaptive to the diameter of a welding wire. The electric conduction nozzle of the submerged arc welding machine is mainly suitable for the submerged arc welding machines.

Description

Current contact nozzle for submerged arc welding machine

Technical field

The utility model belongs to welding equipment, particularly a kind of current contact nozzle for submerged arc welding machine.

Background technology

Ignition tip is the welding equipment consumable accessory, is positioned at welding gun caudal end part, is used for the delivery welding wire.Present most ignition tip is integral structure, then needs integral body to change if ignition tip damages, and causes use cost high all the time.

In addition, the silk rolling hole of existing ignition tip is circle, and simultaneously because the welding wire cross section also is circular, thereby welding wire is larger with silk rolling hole contact-making surface (circular arc contacts), causes the wire resistance larger; Circular hole ignition tip and circular welding wire gap are little, and the metal splash that produces during welding easily stops up welding wire and ignition tip, haircuts, causes current interruption, and when automatic wire feeder continues wire feed, can cause the disorderly waste of welding wire pine; Circular welding wire is in the circular hole ignition tip, and wire easily rolling is trembled, and causes conduction bad, instantaneous short-circuit, current interruption; Circular welding wire contacts with circular hole ignition tip circular arc, slightly namely wears away the ovalisation endoporus through using, and strengthens the gap of welding wire and endoporus, causes the instantaneous short-circuit current interruption, needs the frequent ignition tip, increases use cost.

Summary of the invention

The technical problems to be solved in the utility model is: the problem for above-mentioned existence provides a kind of current contact nozzle for submerged arc welding machine simple in structure, can select the removable parts parts according to its damaged condition, to reach the purpose that reduces use cost.

The technical scheme that the utility model adopts is: current contact nozzle for submerged arc welding machine is characterized in that: it comprises and has axially extending bore, and head and shank by the coaxial connection of screw thread, two sections through holes join form one with the suitable silk rolling hole of gage of wire.

The cross section in described silk rolling hole is polygon.

The cross section in described silk rolling hole is equilateral triangle.

Described shank is threaded by some linkage sections and forms.

The porch in described silk rolling hole is processed with is convenient to the chamfering that welding wire enters.

The head of described ignition tip is truncated cone-shaped, and its diameter dwindles gradually along the wire vent direction.

Described ignition tip adopts red copper to make.

The beneficial effects of the utility model are: 1, ignition tip is divided into head and shank two parts, and two parts are threaded connection, when head damages, only need it is backed out to change get final product, shank then can continue use, thereby greatly reduces use cost.2, silk rolling hole cross section is polygon, changes arc surface contact of the prior art into a some contact (from the position relationship in cross-sectional view welding wire and silk rolling hole), thereby has both reduced contact-making surface, has reduced the wire resistance; Leave the space between polygon silk rolling hole and the welding wire, and this space is distributed in around the welding wire, is beneficial to that the spatter thing is slow to be held, discharge, thereby reduced the drawback that splash stops up haircuts; The welding wire all-the-time stable is in the groove that is surrounded by at least two limits, so that wire is more unimpeded, stability is better, electric conductivity strengthens during wire.

Description of drawings

Fig. 1 is structural representation of the present utility model.

Fig. 2 is the STRUCTURE DECOMPOSITION figure of Fig. 1.

Fig. 3 is cross-sectional view of the present utility model.

Fig. 4 is the cross-sectional view after the utility model is put into welding wire.

The specific embodiment

As shown in Figure 1 and Figure 2, present embodiment comprises head 1 and the shank 2 that has axially extending bore and adopt red copper to make, wherein head 1 one ends are wire outlet end, the other end is by screw thread and 2 coaxial connections of shank, simultaneously two sections through holes join form one with the suitable silk rolling hole 3 of gage of wire, when head 1 wearing and tearing are larger, it can be screwed off and change, shank 2 still can normally use simultaneously, thereby has reduced use cost.

As shown in Figure 3, Figure 4, the cross section in described silk rolling hole 3 is polygon, the cross section in silk rolling hole 3 is equilateral triangle in this example, simultaneously because welding wire 4 cross sections are generally circle, therefore welding wire 4 is at 2 with silk rolling hole 3 hole walls and contacts (from cross-sectional view), contact area is little, and the wire resistance reduces, and wire is unimpeded; Form three triangle spaces between circle welding wire 4 and triangle silk rolling hole 3 hole walls, delay appearance, discharge in order to the spatter thing, thereby reduced the possibility of splash obstruction haircuts; Circular welding wire 4 touches with tri-angle-holed two edge joints in triangle silk rolling hole 3, and welding wire 4 all-the-time stable (are formed by adjacent two edges) in any one V-shaped groove during wire, thereby wire is unimpeded, good stability, electric conductivity enhancing; Circular welding wire 4 contacts with triangle silk rolling hole 3 hole walls, 2 points (line), just need change ignition tip after the triangle porose area wears away into ellipse, has therefore increased service life, practicality, good economy performance.Therefore, this routine delthyrium ignition tip is compared with the circular hole ignition tip, the wire resistance is little, wire feed is unimpeded, wire is stablized, slow down splash stops up the haircuts phenomenon, reduce the current interruption that instantaneous short-circuit causes, thereby strengthen welding machine and welding gun serviceability, improve welding quality, reduce the ignition tip consumption, prolong service life more than two times.

Described shank 2 is threaded by some linkage section 2-1 and forms, and replacement and removal are more convenient.

The porch in described silk rolling hole 3 is processed with chamfering, and chamfer angle is 45 degree in this example, so that welding wire 4 can enter in the silk rolling hole 3 smoothly.

The head 1 of described ignition tip is truncated cone-shaped, and its diameter dwindles gradually along the wire vent direction.

Claims

1. current contact nozzle for submerged arc welding machine is characterized in that: it comprises and has axially extending bore, and head (1) and shank (2) by the coaxial connection of screw thread, and two sections through holes join and form one and the suitable silk rolling hole (3) of gage of wire.

2. current contact nozzle for submerged arc welding machine according to claim 1, it is characterized in that: the cross section in described silk rolling hole (3) is polygon.

3. current contact nozzle for submerged arc welding machine according to claim 2, it is characterized in that: the cross section in described silk rolling hole (3) is equilateral triangle.

4. according to claim 1 and 2 or 3 described current contact nozzle for submerged arc welding machine, it is characterized in that: described shank (2) is threaded by some linkage sections (2-1) and forms.

5. according to claim 1 and 2 or 3 described current contact nozzle for submerged arc welding machine, it is characterized in that: the porch in described silk rolling hole (3) is processed with is convenient to the chamfering that welding wire enters.

6. according to claim 1 and 2 or 3 described current contact nozzle for submerged arc welding machine, it is characterized in that: the head of described ignition tip (1) is truncated cone-shaped, and its diameter dwindles gradually along the wire vent direction.

7. it is characterized in that according to claim 1 and 2 or 3 described current contact nozzle for submerged arc welding machine: described ignition tip adopts red copper to make.