CN2863342Y

CN2863342Y - Resistance welding head for conjoined electrode

Info

Publication number: CN2863342Y
Application number: CN 200520120768
Authority: CN
Inventors: 杨仕桐
Original assignee: Individual
Current assignee: Individual
Priority date: 2005-12-28
Filing date: 2005-12-28
Publication date: 2007-01-31
Anticipated expiration: 2015-12-28

Abstract

The utility model relates to a resistance welding head with a doublet electrode. The head, with two electrodes made of molyb metal that is hard enough and stands fire enough, the tips of which are linked up. In a sulcule between the two electrodes, the insulated isolation layer is filled. The welding head is generally in the shape of a column. The insulated isolation layer in the sulcule is generally insulating spacers. Glue can be coated onto the two sides of the insulating spacers to fix the two electrodes, and also the insulating bush suiting for the head can be used to fix the two elctrodes. The doublet electrode resistance welding head of the utility model can be welded with lacquered wires, thereby satisfying the need for a new type resistance welding head used in the manufacture of electronic devices in which the contact point must be leaded out via lacquered wire welded from one side.

Description

The resistance welding head of conjoined electrode

Technical field

The utility model relates to the resistance welding head of electronics industry, microelectronic industry, especially is applicable in various electronic devices and components or the paster Electronic Components Manufacturing resistance welding head that need weld enamel-covered wire lead-out wire contact with single welding.

Background technology

Two electrodes of electric resistance welding all are independently, and generally all thinking can not disjunctor, during welding, weldment is placed between two electrodes, and exert pressure, when weld force reaches setting value, connect power supply, through weldment, the heat that has a resistance also realizes welding to electric current from two electrode stream.A kind of electric welding head of pinpoint welding (patent No. ZL01114808.X) is also arranged, be to do two interelectrode insulation and fixing with the insulation viscose glue, and the most advanced and sophisticated Ohmic contact of electrode, the most advanced and sophisticated electric spark that can produce of soldering tip during welding is so two eletrode tips of this soldering tip in fact also separate.

Summary of the invention

The purpose of this utility model provides a kind of soldering tip with conjoined electrode.Need carry out single welding a kind of new resistance welding head is provided in the various Electronic Components Manufacturing enamel-covered wire being drawn contact.

The resistance welding head of conjoined electrode of the present utility model has two electrodes, and the tip of these two electrodes fuses and (is called conjoined electrode, one end of its disjunctor is called the disjunctor end, the other end is called separating end), between these two electrodes, have one to separate sulculus, be filled with the insulation interlayer in the sulculus.

The resistance welding head of above-mentioned conjoined electrode of the present utility model can only be filled with the insulation interlayer near in the separation sulculus of two electrode separation end parts, also can all be filled with the insulation interlayer in the whole piece separation sulculus.

The profile of the resistance welding head of above-mentioned conjoined electrode of the present utility model is generally column.

The electrode of the resistance welding head of above-mentioned conjoined electrode of the present utility model is preferably made by the tungsten metalloid material with sufficient intensity hardness and anti-sufficiently high temperature.This metalloid material has such as agglomerated material of molybdenum, tungsten metal and tungsten silver, tungsten copper, copper and tungsten carbide etc.

The insulation interlayer of filling in the resistance welding head of above-mentioned conjoined electrode of the present utility model, the sulculus between its two electrodes is insulation spacer normally.Can scribble the insulation viscose glue on the two sides of described insulation spacer fixes two electrodes; Also the insulation sleeve that can be with coupling in the periphery of this soldering tip middle part or middle and upper part is fixed two electrodes.

The resistance welding head of conjoined electrode of the present utility model can be made by the following method:

(1) makes electrode material with tungsten metalloid with sufficient intensity hardness and anti-sufficiently high temperature, earlier electrode material is processed into needed column, usually can be processed into Φ 2-Φ 5mm, be about the bar (small cylinder) of 25-50mm, also can be processed into the column of other shape close with this bar size, be that the circular other end is square column or the like as oval or square or an end;

(2) begin separation sulculus that connects the column two sides of processing from column one end to distance other end end face 0.3-1.5mm along the column longitudinal axis, this sulculus column is separated into an end disjunctor symmetry 2 half (end of this disjunctor claims the disjunctor end, the other end claims separating end), this two half point is not as two electrodes;

(3) be the center at the disjunctor end with the column longitudinal axis, be processed into the shape (as little square column type or small cylindrical etc.) that needs after crossing;

(4) in separating sulculus, fill the insulation interlayer, and two electrode insulations are fixed (promptly be to make between two electrodes to be maintained fixed state relatively, and after fixing, except that the disjunctor end, remainder keeping state of insulation between two electrodes).So just making profile is the conjoined electrode resistance welding head of column.

The insulation interlayer of filling in separating sulculus described in the said method step (4) can be a part (this part is generally the hostage part of soldering tip) of only filling near separating end, also can be to fill whole piece to separate sulculus; The thickness and the width of filler (insulation interlayer) are consistent with the separation sulculus.Described insulation interlayer is generally insulation spacer; This insulation spacer can be to be made by insulating materials, also can be to stick insulating barrier on its two sides again by the pad that non-insulating material is made to form.The method that two electrodes are fixed in insulation can be to coat the insulation viscose glue on the two sides of insulation spacer, this insulation spacer is filled in separates in the sulculus again, with the insulation viscose glue two electrodes is fixed; Also can be that the be locked periphery of conjoined electrode of insulation sleeve with coupling is fixed.

The resistance welding head of conjoined electrode of the present utility model is when work, because two eletrode tips are disjunctors, so can not produce electric spark.Because electrode disjunctor place is thinner and thin, simultaneously, the resistivity of electrode material is also than higher, and a large amount of electric currents make the electrode disjunctor partly produce high temperature during work, in order to press except that the insulated paint on the enamel-covered wire, under the effect of weld force, and then finish welding.And the soldering tip of ZL01114808.X patent is the electric spark that produces with the Ohmic contact between two eletrode tips, removes insulated paint on the enamel-covered wire by electric spark.So the resistance welding head of the utility model conjoined electrode is all inequality with ZL01114808.X patent soldering tip on structure and operation principle.Because the resistance welding head of the utility model conjoined electrode is made column, matches so easily welding head holder is made, and is convenient to install and use.Adding that column can get certain length arbitrarily, so can guarantee enough operating distances and space, is in carrying out welding operation.In addition, two electrode disjunctors partly can be processed more tinyly, are convenient to electronics industry and use on tiny pad, and the magnitude of current that needs is also few.So the resistance welding head of the utility model conjoined electrode can be widely used in the electronics industry microelectronics industry, be particularly useful for to draw for enamel-covered wire with single welding in various electronic devices and components or the paster Electronic Components Manufacturing welding of contact.

The utility model is described in further detail below in conjunction with the drawings and specific embodiments.

Description of drawings

Fig. 1 is the structural representation of the resistance welding head of the utility model conjoined electrode; Wherein (1-1) is right view, (1-2) is front view, (1-3) and (1-4) is respectively C, the enlarged drawing of D part.

Fig. 2 is the perspective view of a kind of embodiment of the resistance welding head of the utility model conjoined electrode.

Fig. 3 is the perspective view of another kind of embodiment of the resistance welding head of the utility model conjoined electrode.

The specific embodiment

With reference to Fig. 1.The resistance welding head of conjoined electrode of the present utility model mainly is made of most advanced and sophisticated 3 two electrode 1a that fuse and 1b; Except that tip portion, separate between two electrodes, be filled with insulation interlayer 4 in this sulculus by a separation sulculus 2 that connects; This insulation interlayer can be that the top part of only filling separation sulculus is a separating end part (shown in 4 in the accompanying drawing), also can be to fill whole separation sulculus.Can coat heat cure insulation viscose glue on the two sides of insulation interlayer 4, and then it is filled in the separation sulculus 2, fix by the insulation between two electrodes of insulation viscose glue realization.

It is pointed column (as shown in Figure 1 to Figure 3) that the monnolithic case of the resistance welding head of the utility model conjoined electrode is an end; The external diameter of this soldering tip (or cross section circumscribed circle diameter) is generally 2-5mm, and length is generally 25-50mm; The width (i.e. two interelectrode separation distances) of the separation sulculus 2 between two electrodes, difference is generally 0.2-0.5mm according to the size of soldering tip external diameter; The thickness d of two eletrode tip disjunctor parts is generally 0.3-1.5mm (being generally 0.5-1mm).The end face of little square, small circular or the like different shape is made in transition on demand processing in soldering tip tip (i.e. the disjunctor part of two electrodes).

Below enumerate the concrete preparation embodiment of the resistance welding head of the utility model conjoined electrode.With reference to Fig. 2 and Fig. 3, get the molybdenum bar AB of Φ 3 * 30mm, process the separation sulculus 2 that connect molybdenum bar two sides to the B end along longitudinal axis at the A of molybdenum bar end, this separates the wide about 0.20mm of sulculus, long 29.4mm, throughly hold terminal 0.6mm place from B, so just molybdenum bar AB be processed into B hold disjunctor still symmetry 2 half, this 2 half will become two electrode 1a and 1b respectively; Hold to be the center with the AB longitudinal axis still at B then, little flat column is processed in the transition of B end, the area of this little square column bottom (B holds end face) is about 1 * 1mm2.Get thickness at last and separate the identical insulating trip (for example mica sheet) of sulculus 2 width, coat insulation viscose glue (for example " 502 viscose glue ") on the two sides of insulating trip, it is filled in the AG section of separating sulculus 2 tops, solidifying between back two electrode 1a and the 1b is relative fixed (as shown in Figure 2) again; Insulating trip is coating viscosity glue not also, separate in the sulculus and directly be filled in, (make with an insulation sleeve 5 that is complementary with molybdenum bar AB periphery again by insulating materials, or make the back inner surface by metal material and post the tubular body of insulating barrier) tightly be placed in the middle part or the middle and upper part (as shown in Figure 3) of two electrodes, make relative fixed between two electrodes; So promptly make the resistance welding head of conjoined electrode.

Being installed in the resistance welding head of the conjoined electrode of making as stated above as the patent No. is on the ZL01114785.7 disclosed " directly welding the electric spot-welding machine of enamel-covered wire ", three welding parameters setting are: output pulse amplitude 1.30V, output burst length 12ms, weld force 0.7kg, common enamel-covered wire with Φ 0.12mm, thick be on the zinc-plated phosphor-copper material electronics component pin of 0.12mm, obtain satisfied welding effect.The welding life-span surpasses 10000 solder joints.

Claims

1. the resistance welding head of a conjoined electrode is characterized in that the tip of two electrodes of this soldering tip fuses, and has one to separate sulculus between these two electrodes, is filled with the insulation interlayer in the sulculus.

2. the resistance welding head of conjoined electrode as claimed in claim 1 is characterized in that only being filled with the insulation interlayer near in the separation sulculus of two electrode separation end parts.

3. the resistance welding head of conjoined electrode as claimed in claim 1 is characterized in that all being filled with the insulation interlayer in the whole piece separation sulculus.

4. the resistance welding head of conjoined electrode as claimed in claim 1, the profile that it is characterized in that this soldering tip is a column.

5. the resistance welding head of conjoined electrode as claimed in claim 4 is characterized in that the external diameter of this soldering tip or cross section circumscribed circle diameter are 2-5mm, and length is 25-50mm; The width of the separation sulculus (2) between two electrodes is 0.2-0.5mm; The thickness of two eletrode tip disjunctor parts is 0.3-1.5mm.

6. as the resistance welding head of one of claim 1-5 described conjoined electrode, it is characterized in that the insulation interlayer of filling in two separation sulculuses between the electrode is an insulation spacer, the two sides of this insulation spacer scribbles the insulation viscose glue two electrode insulations is fixed.

7. as the resistance welding head of one of claim 1-5 described conjoined electrode, it is characterized in that at this soldering tip middle part or the periphery of middle and upper part is with the insulation sleeve that can make two electrode insulations fixing.

8. as the resistance welding head of one of claim 1-5 described conjoined electrode, its feature is made by the tungsten metalloid with sufficient intensity hardness and anti-sufficiently high temperature at the electrode material of this soldering tip.