CN201283474Y

CN201283474Y - Welder special for compressor copper pipe

Info

Publication number: CN201283474Y
Application number: CNU2008201627725U
Authority: CN
Inventors: 陈增光
Original assignee: NINGBO XINZHOU RESISTANCE WELDER CO Ltd
Current assignee: NINGBO XINZHOU RESISTANCE WELDER CO Ltd
Priority date: 2008-08-13
Filing date: 2008-08-13
Publication date: 2009-08-05
Anticipated expiration: 2018-08-13

Abstract

The utility model relates to a special-purpose welding machine for a compressor copper pipe, which comprises an upper electrode seat, an upper electrode (9), a lower electrode (11) and a cylinder, wherein the inner seamed edge of the lower port of an inner hole of the upper electrode (9) is a chamfer edge I (14), the inner seamed edge of the upper port of the lower electrode is a chamfer edge II (15), during the welding, under the function of the pressure of the piston motion in the cylinder, one part of an iron plate (10) is mechanically clamped into the copper pipe (12), furthermore, after the upper electrode (9) and the lower electrode (11) are chamfered, the contact area between the upper and lower electrodes and welded work piece is reduced, the resistance is increased, and the generated heat in unit time is more. The special-purpose welding machine for a compressor copper pipe can reduce the energizing time for welding a product, reduce the energy consumption, and improve the production efficiency, and since a part of the iron plate is clamped in the copper pipe, and the copper pipe is not easy to loose, the firmness of the welding is good, and the pass percent of products is high.

Description

Compressor copper pipe welding machine special

Technical field:

The utility model relates to a kind of compressor copper pipe welding machine special.

Background technology:

Welding conventional art to copper pipe and two kinds of metals of iron plate is to add silver solder in the welding position that needs of copper pipe and iron plate, utilize the high temperature of acetylene gas flame to reach the purpose of welding then, length conduction time, the power consumption that need are big, welding cost is high but weld like this, solder yield is low, so this technology slowly is eliminated.

Prior art mainly adopts electric resistance welding to the welding of copper pipe and two kinds of metals of iron plate, and it is by upper/lower electrode, the source of welding current of resistance welder, copper and iron are carried out spot welding and projection welding and obtains completely that liquid phase is fused.But seamed edge is the right angle in the lower port of the top electrode endoporus of the welding machine of prior art, seamed edge also is the right angle in the bottom electrode upper port, the product that such upper/lower electrode welds out is fused the surperficial liquid phase of the contact portion of copper pipe and iron plate because only be, do not have mechanical fixing between the two, so under the effect of external force, be easy to cause copper pipe to come off, thereby influence yield rate.

In addition because the interior seamed edge of the lower port of the top electrode endoporus of the welding machine of prior art is the right angle, the contact-making surface of upper/lower electrode and copper pipe and iron plate is the whole anchor ring of upper/lower electrode port in welding process, the contact area of upper/lower electrode and copper pipe and iron plate is excessive, the contact site resistance of energising back upper/lower electrode and copper pipe and iron plate is just little, the heat that this position produced in the unit interval is just little, so conduction time is longer relatively, energy consumption is higher, and because the generation heat is not rapid, so unit interval transition molten drop splashes more, size is also bigger, but the welding of copper pipe and iron evaluate its product solder yield to close that main points just are that welding process splashes what, it is many more to splash, and yield rate is low more.

The utility model content:

The purpose of this utility model is to provide a kind of solder yield height, energy consumption is low, firmness is good compressor copper pipe welding machine special.

Technical solution of the present utility model provides a kind of compressor copper pipe welding machine special with following structure, comprise top electrode seat, top electrode, bottom electrode and cylinder, seamed edge is chamfering I in the lower port of top electrode endoporus, and seamed edge is chamfering II in the bottom electrode upper port.

After adopting above structure, the utility model compressor copper pipe welding machine special device is compared with prior art compressor copper pipe welding machine special, has the following advantages:

The top electrode of compressor copper pipe welding machine special of the present utility model and bottom electrode are by reasonable chamfering, the port section of the upper/lower electrode after the chamfering has been reserved the space, so the bore edges that welds with copper pipe in the iron plate under the effect of cylinder crunch and welding current partly is extruded inward, a part of machinery of iron plate sticks in the copper pipe like this, copper pipe is not easy to become flexible, finished product rate height is also just high, and product is also just long to the ability of external force resistance effect, has prolonged service life; In addition after top electrode and the bottom electrode chamfering, make relative the reducing of contact area of top electrode and the laterally projecting welding position of copper pipe, the also relative minimizing of bottom electrode with the contact area of iron plate, copper pipe is the hot zone that has a resistance with the position that iron plate contacts with upper/lower electrode respectively, contact area reduces then, and resistance just increases, so the heat that produces in the energising back unit interval is just many, the time that arrives the temperature of welding requirements just shortens, welding a product also can reduce used conduction time, reduce energy consumption, improved production efficiency.

As improvement, the outer seamed edge of the bottom electrode upper port of compressor copper pipe welding machine special of the present utility model is chamfering III, so will further reduce the contact area of bottom electrode and iron plate, contact area reduces resistance and just increases, so the heat that produces in the energising back unit interval is just many, the time that arrives the temperature of welding requirements just shortens, and welds a product and also can reduce used conduction time, reduce energy consumption, improved production efficiency.

Piston rod I is provided with a back-up ring and a securing member, and dish-shaped spacers is between back-up ring and securing member, and the securing member lower end is fixed by two nuts; Securing member is connected with piston rod II, and piston rod II is connected with connecting plate again, and connecting plate is connected with the top electrode seat again.So during cylinder operation, pressure arrives top electrode by piston rod I, back-up ring, butterfly pad, securing member, piston rod II, connecting plate, top electrode seat.Top electrode, soldered workpiece (copper pipe and iron plate) contact fully with the bottom electrode three and when not switching on, the dish pad is subjected to be compressed to behind the bidirection press limit of setting, the soldered position of the workpiece that the energising back is soldered produces because the existence of self-resistance, the energising back produces enough heats and makes the different metal fusing, just when copper pipe and iron plate compression strength produce sudden change and differ extreme value, the dish pad has played the important function of quickening supercharging, makes welded part (copper pipe and iron plate) the liquid phase welding of two unlike materials.

Thereby after solving top electrode and bottom electrode chamfering fully, upper/lower electrode and workpiece contact area reduce, and in the moment that welding current passes through, workpiece has caused that to lower compression the cylinder speed of pressing down does not catch up with rapidly, causes the not enough problem of electrode pressure.

Description of drawings:

Shown in Figure 1 is the structural representation of compressor copper pipe welding machine special of the present utility model;

Shown in Figure 2 is the enlarged drawing of A portion among Fig. 1.

Wherein, 1, piston rod I, 2, back-up ring, 3, dish-shaped pad, 4, securing member, 5, nut, 6, piston rod II, 7, connecting plate, 8, the top electrode seat, 9, top electrode, 10, iron plate, 11, bottom electrode, 12, copper pipe.

Concrete enforcement side:

Below in conjunction with the drawings and specific embodiments, the utility model is described in further detail.

Compressor copper pipe welding machine special of the present utility model shown in Fig. 1,2 comprises top electrode seat 8, top electrode 9, bottom electrode 11 and cylinder 13.Seamed edge is chamfering I14 in the lower port of top electrode 9 endoporus, and seamed edge is chamfering II15 in bottom electrode 11 upper port, and the outer seamed edge of bottom electrode 11 upper port is chamfering III16; Piston rod I 1 lower end in the cylinder 13 is provided with butterfly pad 3, and piston rod I 1 is provided with a back-up ring 2 and a securing member 4, and butterfly pad 3 is fixed between back-up ring 2 and the securing member 4, and securing member 4 lower ends are fixing by two nuts 5; Securing member 4 is connected with piston rod II 6, and piston rod II 6 is connected with connecting plate 7 again, and connecting plate 7 is connected with top electrode seat 8 again, so pressure can pass on the top electrode 9 by piston rod I 1.

Claims

1, a kind of compressor copper pipe welding machine special, comprise top electrode seat (8), top electrode (9), bottom electrode (11) and cylinder (13), it is characterized in that: seamed edge is chamfering I (14) in the lower port of described top electrode (9) endoporus, and seamed edge is chamfering II (15) in described bottom electrode (11) upper port.

2, a kind of compressor copper pipe welding machine special according to claim 1 is characterized in that: the outer seamed edge of described bottom electrode (11) upper port is chamfering III (16).

3, a kind of compressor copper pipe welding machine special according to claim 1 is characterized in that: piston rod I (1) lower end in the described cylinder (13) is provided with multi-disc dish pad (3).