WO2014005458A1 - Novel parallel electrode welding head and preparation process thereof - Google Patents

Novel parallel electrode welding head and preparation process thereof Download PDF

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Publication number
WO2014005458A1
WO2014005458A1 PCT/CN2013/074179 CN2013074179W WO2014005458A1 WO 2014005458 A1 WO2014005458 A1 WO 2014005458A1 CN 2013074179 W CN2013074179 W CN 2013074179W WO 2014005458 A1 WO2014005458 A1 WO 2014005458A1
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WO
WIPO (PCT)
Prior art keywords
electrode
parallel
horn
tip
mosaic
Prior art date
Application number
PCT/CN2013/074179
Other languages
French (fr)
Chinese (zh)
Inventor
杨仕桐
杨士郎
Original Assignee
广州微点焊设备有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from CN 201210169663 external-priority patent/CN102950374A/en
Application filed by 广州微点焊设备有限公司 filed Critical 广州微点焊设备有限公司
Publication of WO2014005458A1 publication Critical patent/WO2014005458A1/en

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K11/00—Resistance welding; Severing by resistance heating
    • B23K11/10—Spot welding; Stitch welding
    • B23K11/11—Spot welding
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K11/00—Resistance welding; Severing by resistance heating
    • B23K11/30—Features relating to electrodes
    • B23K11/31—Electrode holders and actuating devices therefor
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K35/00—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting
    • B23K35/02—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting characterised by mechanical features, e.g. shape
    • B23K35/0255—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting characterised by mechanical features, e.g. shape for use in welding
    • B23K35/0261—Rods, electrodes, wires

Definitions

  • the invention belongs to the field of electric resistance welding, and more particularly to a parallel electrode welding head for directly welding an enameled wire by electric resistance welding and a preparation method thereof. Background technique
  • Parallel electrode horns are important in welding techniques that directly weld enameled wires with resistance welding.
  • the prior art has disclosed a plurality of parallel electrode horns for directly welding enameled wires, for example, “prestressed spot welding head” of the patent application number CN 93245377.5, “point welding horn of patent application number CN 01114808.X” "The parallel electrode welding head of the patent application number CN 201020696469.0, and the “electrical resistance welding head of the joint electrode and the preparation method thereof" of the patent application No. CN 200510121259.2.
  • the object of the present invention is to provide a novel parallel electrode horn having a desired service life and a method of preparing the same.
  • the present invention provides a novel parallel electrode horn comprising a parallel damascene electrode horn provided with two damascene electrodes.
  • the damascene electrode is provided with a mosaic and an electrode embedded in the mosaic.
  • the mosaic of the embedded electrode is copper or Copper alloy.
  • the mosaic of the two damascene electrodes is a symmetrically arranged semi-cylindrical mosaic.
  • the mosaic of the two embedded electrodes is a symmetrically arranged semi-cylindrical tubular mosaic.
  • the electrode of the embedded electrode is tungsten, a tungsten alloy, a molybdenum or a molybdenum alloy.
  • the parallel damascene electrode horn has a main body portion, an electrode tip portion and a mosaic transition portion, the main body portion is a mosaic portion of the embedded electrode, and the electrode tip portion is an electrode embedded with the electrode Extending the portion processed into the tip of the parallel electrode horn, the inlaid transition portion is a portion in which the damascene electrode is embedded in the insert and extends toward the tip end of the electrode.
  • the inlaid transition portion is tightly wrapped with a heat shrinkable sleeve.
  • the heat shrinkable sleeve is a PET heat shrinkable sleeve or a PVC heat shrinkable sleeve.
  • the parallel damascene electrode horn is a parallel damascene electrode horn which is not in contact with the tip.
  • the parallel damascene electrode horn is a tip-connected parallel damascene electrode horn.
  • the parallel damascene electrode horn is a tip-in contact parallel damascene electrode horn.
  • the present invention also provides a method of preparing a novel parallel electrode horn, which comprises the following steps:
  • Preparation of parallel damascene electrode horn The above prepared electrode is uniformly coated with a heat curing adhesive on its semi-cylindrical plane, and the two embedded electrodes are integrally joined together, and the heat curing adhesive is simultaneously used as two An insulating barrier between the damascene electrodes; a semi-cylindrical inner bore of the parallel inlaid electrode horn insert bonded to the body after heat curing, filled with a filler.
  • the electric material is extremely tungsten, a tungsten alloy, a molybdenum or a molybdenum alloy.
  • the inlay is copper or a copper alloy.
  • the mosaic bodies of the two mosaic electrodes are symmetrically arranged semi-cylindrical mosaic bodies.
  • the mosaic bodies of the two mosaic electrodes are symmetrically arranged semi-cylindrical tubular mosaic bodies.
  • the parallel embedded electrode horn has a main body portion, an electrode tip portion and a mosaic transition portion, and the main body portion is a mosaic portion of the embedded electrode.
  • the tip end portion of the electrode is a portion of the electrode of the damascene electrode which is machined into a tip end of the parallel electrode tip
  • the inlaid transition portion is a portion in which the damascene electrode is inlaid into the mosaic body and extends toward the tip end portion of the electrode.
  • the novel parallel electrode horn of the present invention changes the parallel electrode structure of the prior art cartridge to
  • the structure of the parallel embedded electrode, the parallel embedded electrode horn has a main body portion, an electrode tip portion and a mosaic transition portion, and the two electrodes are significantly thickened due to the inward bending of the inlaid transition portion, and the distance between the two electrodes is significantly increased, the two electrodes
  • the angle of the tip contact is significantly increased, so that the contact force generated by the two electrode tips is also significantly increased, which can significantly increase the reliability, stability and impact resistance of the tip.
  • the main part of the novel parallel electrode welding head of the invention adopts copper or copper alloy with good heat conduction and good electrical conductivity, and the whole parallel electrode welding head is extended by tungsten-molybdenum material, and the effect is very obvious: Because the electrical and thermal conductivity of tungsten and molybdenum is poor, and the mechanical processing performance is also poor, the length of the parallel electrode welding head of the prior art tungsten-molybdenum material can only be about 25mm-30mm, and the length of the welding head is too long, and the conductive heat dissipation is likely to occur. The length of the welding head is too short and affects the operating space and field of view.
  • the invention adopts copper or copper alloy with good heat dissipation and good conductivity as the main body portion of the parallel electrode, and can lengthen the length of the parallel electrode welding head at will, which is beneficial to increase the operation space and enhance the clear vision; 2.
  • Tungsten and molybdenum materials are expensive (the price of tungsten and molybdenum is about 50 times that of copper or copper alloy), and the processing properties of copper or copper alloys are good (good ductility), using copper metal or copper alloy as the main body of the embedded parallel electrode.
  • the department can greatly reduce material cost and processing cost.
  • the inlaid transition portion of the novel parallel electrode welding head of the present invention is provided with a heat shrinkable sleeve tight sleeve, and the shrinkage force and the tensile force after shrinkage generated by the heat shrinkable sleeve are increased, and the inlaid transition portion and the welding head can be increased.
  • the tip is stable and reliable and impact resistant. Since the shrinkage of the heat shrinkable sleeve is very uniform, the parts after the shrinkage can tightly wrap the parallel electrode horn, and even if the inlaid transition portion is tapered or irregularly tapered, it can be tightly wrapped without slipping.
  • the heat shrinkable sleeve is thin, and after shrinking, it is tightly integrated with the inlaid transition portion of the package, and the original shape and volume of the inlaid transition portion are hardly changed, and the field of view of the welding operation is not affected, so the sleeve is tightly set in the inlay.
  • the contraction force generated by the heat shrinkable sleeve of the transition portion and the tensile force after shrinkage can further increase the stability and impact resistance of the electrode tip end portion of the tip contact parallel inlaid electrode horn.
  • the invention adopts PET (polyester) heat shrinkable sleeve with good heat resistance, insulation and structural properties, and preferably adopts PET heat shrinkable sleeve with shrinkage resistance temperature of 250 ° C and ⁇ 4.0 ⁇ , wall thickness About 0.10mm, finished
  • the tube after full shrinkage can be less than 2.0 mm. Therefore, after shrinking, the heat shrinkable sleeve is completely tightly molded with the inlaid transition portion and generates a large contraction force, and the tensile strength after shrinkage is also strong.
  • FIG. 1 is a schematic view showing the structure of a first embodiment of a novel parallel electrode welding head of the present invention.
  • FIG. 2 is a schematic structural view of a second embodiment of a novel parallel electrode welding head of the present invention.
  • FIG 3 is a schematic structural view of a third embodiment of a novel parallel electrode welding head of the present invention.
  • FIG. 4 is a schematic structural view of a fourth embodiment of a novel parallel electrode welding head of the present invention. detailed description
  • the concept of "parallel electrode horn" proposed in this specification is described as a single sheet: the welding metal connected to the positive and negative electrodes of the welding power source is called an electrode; the two electrodes are placed on the same side of the weldment. Electrode; parallel electrode is integrally joined as a parallel electrode horn; for convenience of description, various parallel electrode horns of the directly solderable enameled wire mentioned in the background of the specification include: prestressed electrode horn, ohmic Contact parallel electrode horns and conjoined parallel electrode horns are collectively referred to as "tip contact parallel electrode horns".
  • the working principle of the tip contact parallel electrode welding head is as follows: The head is operated by the parallel electrode welding head to press the welded enameled wire, and the welding power source is turned on when the pressure reaches the set value; the large current passes through the tip of the welding head to make the tip generate high temperature. And the electric spark, the part of the insulating paint on the enameled wire is burned and burned, and the rest is to the sides. Retracting, exposed metal; under the action of welding pressure, large current turns into the metal and substrate in the enameled wire to achieve electric resistance welding.
  • the prerequisites for direct contact welding of the enameled wire with the tip-contact parallel electrode horn are:
  • the tip of the horn needs to maintain good stability and reliability, and can continuously generate high temperature or electric spark to burn the varnish if the tip of the horn does not produce high temperature or Electric spark, can not burn off the insulating paint, welding can not be carried out.
  • the parallel electrode welding head of the prior art uses one of the two semi-cylindrical electrodes of about ⁇ 3.0 ⁇ to transform one end into an approximately tapered tip, and then solidifies it by integral with an insulating adhesive.
  • the tip structure of the welding head has the following Three characteristics: First, the insulation spacing of the two electrodes is small, generally below 0.10mm, so the angle at which the two electrodes form the tip contact is small; the other is that the distance between the two electrodes forming the tip contact is very short, generally only 0.5. About mm; third, the part of the two electrodes near the tip of the horn has been processed very thin and short, generally around 0.25x0.6mm.
  • the prior art tip contact parallel electrode welding head has the following structural defects: The entire welding head is formed by extending the electrode material, and the spacing between the two electrodes is too small, so there is no space and condition for increasing the reliability and stability of the tip of the welding head. .
  • the present invention improves the structure of the parallel electrode horn by the following two aspects: First, completely changing the structure of the existing parallel electrode horn; An insulating sleeve is added to the inlaid transition portion of the parallel inlaid electrode horn.
  • the present invention firstly completely changes the structure of the prior art parallel electrode horn (the prior art parallel electrode horn, the entire horn is extended by electrode material processing In this case, the spacing between the two electrodes is too small, and the angle at which the two electrode tips are in contact is small).
  • the novel parallel electrode welding head proposed by the invention comprises two symmetric parallel embedded electrodes, and the structure of the embedded electrode is electric One end of the pole is tightly mounted to another metal or alloy, so the damascene electrode contains two different metals or alloys of electrodes and mosaics.
  • the structure of the parallel damascene electrode horn consisting of two damascene electrodes comprises a body portion, an electrode tip portion and a damascene transition portion: separated by an insulating spacer between the mosaic electrodes of the two damascene electrodes, and two through the insulating spacer layer
  • the damascene electrodes are integrated to form a parallel damascene electrode horn.
  • the two mosaics form a main portion of the parallel embedded electrode horn, and one end of the two electrodes is processed into a portion parallel to the tip end of the electrode horn, forming a tip end portion of the electrode, and the other ends of the two electrodes are closely embedded in the mosaic body,
  • the electrode is connected to the mosaic and the transition portion forms a mosaic transition.
  • the mounted electrode is a tungsten metal, a molybdenum metal, a tungsten alloy or a molybdenum alloy
  • the inlay is a copper metal or a copper alloy having good electrical and thermal conductivity and good ductility.
  • a schematic view of a first embodiment of a novel parallel electrode horn of the present invention includes two electrodes 101, 102, mosaics 103, 104 and an insulating spacer layer 105.
  • One end of the electrodes 101, 102 is inlaid.
  • the damascene electrodes 103 and 104 form a damascene electrode, and the two damascene electrodes are firmly connected by the insulating spacer layer 105 to form a novel parallel electrode horn-parallel inlaid electrode horn of the present invention, and the two mosaic bodies 103 and 104 form a parallel.
  • the body portion 106 of the electrode horn is embedded, and the body portion 106 is a portion where the horn is connected to the welding power source.
  • One ends of the two electrodes 101, 102 are extended to be parallel to the tip of the fused electrode horn, and the electrode tip portion 107 is formed.
  • the electrode tip portion 107 The other end of the two electrodes 101, 102 is embedded in the mosaics 103, 104 for the portion of the horn to be soldered, and the transitions 108 are formed by the portions of the electrodes 101, 102 that are connected to the mosaics 103, 104.
  • the parallel damascene electrode horn is mounted on the horn clip by the body portion 106, the horn clip is connected to the head, and the welding power source is connected to the horn clip through the output cable.
  • the mosaics 103, 104 may be formed in a semi-cylindrical shape and further drawn into a semi-circular tube by a mold, so that the connection of the two mosaics 103, 104 is facilitated to form a cylinder. It also facilitates the installation of parallel damascene electrode horns on the horn clips.
  • the copper metal or copper alloy inserts 103, 104 of the semicircular tubing drawn by the mold can further increase the heat dissipation and conduction of the inserts 103, 104, the material cost and processing cost of the material.
  • the novel parallel electrode horn of the present invention has an electrode 101 embedded in the transition portion 108, 102 is obviously thickened, the pitch of the two electrodes 101, 102 of the inlaid transition portion 108 is significantly increased, the contact angle of the two electrode tips at the inlaid transition portion 108 is also significantly increased, and the distance between the tips of the soldering tip at the inlaid transition portion 108 is also significant.
  • the lengthening is increased, so that the contact force generated by the two electrodes 101, 102 is also significantly increased, which can significantly increase the reliability stability and impact resistance of the tip of the horn.
  • the manufacturing process of the first embodiment of the novel parallel electrode horn of the present invention will be described in detail with reference to FIG. 1, in which one ends of two symmetrical electrodes 101, 102 are tightly mounted on two symmetrical mosaics 103, 104, respectively. That constitutes two symmetrical mosaic electrodes.
  • the electrodes 101, 102 may be tungsten electrodes, tungsten alloy electrodes, molybdenum electrodes or molybdenum alloy electrodes, and the electrodes 101, 102 may be either semi-cylindrical or cylindrical (ie, the cross-section of the electrodes).
  • the cross section is circular or semi-circular), and the inlays 103, 104 may be copper rods or copper tubes.
  • the mosaic bodies 103, 104 are semi-cylindrical copper tubes, and the insulating adhesive layer is used as the insulating spacer layer 105 of the two embedded electrodes, and the two mosaic electrodes are integrally connected by the insulating adhesive to form a cylindrical parallel-embedded electrode horn, two inlays 103, 104 forming a main body portion 106; one end of the electrodes 101, 102 is tip-transformed into a tip end of the horn of about 0.3 * 0.6 mm, and the two electrodes 101,
  • the inlaid joints are respectively bent at a small angle in opposite directions, so that the tips of the two electrodes 101, 102 are in sufficient contact to form the electrode tip portion 107, and the other ends of the electrodes 101, 102 are firmly embedded in the mosaics 103, 104.
  • a tip contact type parallel damascene electrode horn having a main body portion 106, an electrode tip portion 107, and a damascene transition portion 108 is constructed.
  • the mosaic body of the novel parallel electrode welding head adopts copper or copper alloy with good heat conduction and good electrical conductivity, and the parallel electrode welding head is extended from tungsten and molybdenum material as a whole, and the effect is obvious: 1. Due to tungsten and molybdenum The conductive and thermal conductivity is poor, and it is suitable for tungsten-molybdenum materials with poor machinability.
  • the prior art resistance welding parallel electrode welding head generally adopts about 3x30mm. The length of the welding head is too long, and the conductive heat dissipation is poor, the welding head is thick and the material cost is increased. The length of the welding head is too short and affects the operating space and field of view.
  • the invention inserts two electrodes into the copper or copper alloy with good heat conduction and good conductivity, and the main body portion of the parallel electrode welding head can be lengthened and thickened to ⁇ 4.5 ⁇ 45 ⁇ or above at will, which is beneficial to increase the operation space and clear vision.
  • the parallel embedded electrode horn of the invention using copper or copper alloy inlay can greatly reduce material cost and processing cost.
  • the structure of the parallel embedded electrode is a semi-cylindrical copper metal structure; the mosaic body is a semi-cylindrical tube structure
  • the enamelled wire ⁇ ⁇ fine generally less than O.lOmm
  • the lead wire is short, generally only 10 mm
  • the welding must be near the end of the enameled wire l-2mm
  • the tip of the tip is very short, in Such a small space plus a common insulating sleeve is very difficult;
  • the shape of the general parallel electrode horn weld head is mostly a cylinder with a tapered or irregular tapered transition to the tip. It is very difficult to machine the insulating sleeve on such a cone or irregular cone. After that, it is very easy to slip off. Therefore, it is difficult to firmly put on the ordinary insulating sleeve at the tip transition.
  • the direct welding enameled wire belongs to micro-welding, and the enameled wire to be welded is generally smaller than O. lOmm, even at the shortest working distance, normal people can't see the weldment and can't distinguish the welding effect. Microscopic optics must be used to ensure the clear vision. Under such conditions, the insulating sleeve is added to the tip transition. The tube does not affect the field of view and the operation is almost impossible to achieve.
  • FIG. 2 it is a schematic structural view of a second embodiment of a novel parallel electrode horn according to the present invention.
  • the structure is basically the same as that of the first embodiment of the present invention, and includes a main body portion 201 and two electrodes fixed thereto.
  • an additional one is added to the mosaic transition portion 203.
  • the heat shrinkable sleeve 204 is tightly fitted, and the contraction force generated when the heat shrinkable sleeve 204 is contracted by heat and the tensile force after shrinkage are increased, and the stability reliability and impact resistance of the electrode tip end portion 205 are increased. Since the heat shrinkable sleeve 204 shrinks very evenly, the portions after the shrinkage can tightly wrap the parallel electrode horn, even if the tapered transition or other irregular shape transition can be tightly wrapped without slipping. In addition, the heat shrinkable sleeve 204 is thin and shrinks and is tightly integrated with the inlaid transition portion 203 of the package, and the original shape and volume of the inlaid transition portion 203 are hardly changed, so that the field of view of the welding operation is never affected. Other configurations of the second embodiment of the present invention are the same as those of the first embodiment of the present invention, and will not be described again.
  • the heat shrinkable sleeve has a PVC heat shrinkable sleeve and a PET (polyester) heat shrinkable sleeve.
  • the present invention selects a polyester heat shrinkable sleeve which is excellent in heat resistance, insulation and structural properties, preferably ⁇ 4.0 ⁇ polyester heat Shrink tubing (also known as PET heat shrink tubing), because PET heat shrink tubing has better heat resistance, insulation and structure, and its shrinkage resistance can be 250 °C.
  • the inner diameter of the PET heat shrinkable sleeve is ⁇ 4.0 ⁇
  • the wall thickness of the tube is about 0.10 mm
  • the diameter of the tube after shrinking is less than ⁇ 2.0 ⁇ , so that the heat shrinkable sleeve is completely contracted. It is tightly molded with the inlaid transition portion 203 and produces a large contraction force, and the tensile force after contraction is also too strong.
  • the various physical and chemical properties of the integrated PET heat shrinkable sleeve, together with the shrink-wrapped heat shrinkable sleeve 204, do not substantially change the shape and volume of the inlaid transition portion 203, so the heat shrinkable sleeve is tightly fitted in the inlaid transition portion 203. 204, can fully meet the requirements of increasing the reliability of the tip stability.
  • the structure of the shrink sleeve outside the inlaid transition portion is simple, there has been no related report or attempt in the art because: the temperature generated by the tip of the weld head is as high as 1000° during resistance welding. Above C, and the heat-resistant temperature of the PET heat-shrinkable sleeve is only about 250 ° C, those skilled in the art generally believe that the PET heat-shrinkable sleeve cannot withstand the high temperature during the welding process.
  • the inventors of the present application overcome the knowledge bias of those skilled in the art, boldly apply a heat shrinkable sleeve tight sleeve on the inlaid transition portion, and increase the stability of the tip of the soldering tip. Reliable and impact resistant, and achieved unexpected technical results.
  • the invention can propose that the heat shrinkable sleeve is applied in the mosaic transition portion because: 1. Since the mosaic body of the invention is a copper metal with good heat dissipation, and the inlaid portion is obviously thickened, the heat conduction and heat dissipation of the welding head are greatly increased.
  • the time for direct welding of the enameled wire is very short, generally only 10 milliseconds, so the heat generated is not much;
  • the welding interval Longer generally, the manual welding interval is more than 3 seconds, and the automatic welding interval is more than 2 seconds). Therefore, the high temperature generated by the welding is easy to conduct heat through the insert and the welding head of the welding head without being in the mosaic transition. Department accumulation.
  • the parallel embedded electrode horn of the present invention has a structure of a main body portion, an electrode tip portion and a mosaic transition portion; the structure of the semi-cylindrical mosaic body, the mosaic of the parallel embedded electrode horn
  • the structure of the external heat-shrinkable sleeve of the transition part is applicable not only to the tip-contact type parallel electrode welding head, but also to the tip-contact non-contact parallel electrode welding head and the tip-connected parallel electrode welding head, which are not in contact at the tip end.
  • the use of the structure proposed by the present invention on a parallel electrode horn or a tip-connected parallel electrode horn is within the scope of the present invention.
  • FIG. 3 is a schematic structural view of a third embodiment of a novel parallel electrode horn according to the present invention, the structure of which is similar to the first and second embodiments of the present invention, and includes a main body portion 301 and an insulating spacer layer 302 to which two electrodes are fixed.
  • the inlaid transition portion 303, the external heat shrinkable tube 304, and the electrode tip end portion 305 are fixed.
  • the electrode tip portions 305 of the two electrodes are not in contact.
  • FIG. 4 is a schematic structural view of a fourth embodiment of a novel parallel electrode horn according to the present invention, which has a structure similar to the first and second embodiments of the present invention, and includes a main body portion 401 and an insulating spacer layer 402 to which two electrodes are attached.
  • the electrode tip portions 405 of the two electrodes are connected Settings.
  • a parallel-contact parallel-mounted electrode tip is taken as an example to introduce a parallel damascene electrode.
  • the preparation method of the welding head includes the following four main processes:
  • an arc groove of about 2 mm in length and about 0.5 mm in depth is machined, and the molybdenum rod electrode is bent at 10 ° in the center of the curve.
  • semi-cylindrical copper tube Prefabricated semi-cylindrical copper tube, semi-cylindrical copper tube can be drawn by die, semi-cylindrical inner hole with ⁇ 3.2 ⁇ inside the semi-cylindrical copper tube, the inner hole is required to closely match the spare semi-cylindrical molybdenum electrode
  • the semi-cylindrical copper tube has a semi-cylindrical shape with an outer diameter of approximately ⁇ 4.5 ⁇ .
  • the semi-cylindrical copper tube is processed into a 40 mm long mosaic and subjected to surface treatment for use.
  • the semi-cylindrical inner hole of the parallel embedded electrode horn insert is bonded with a filler, that is, the preparation of the tip-contact parallel damascene electrode horn is completed, and the prepared tip contact is prepared.
  • the parallel-shaped inlaid electrode welding head has a rectangular end face of 0.5x0.6mm, and is suitable for a fine enameled wire with a wire diameter of about 0.12 mm or less.
  • the molybdenum electrode has been described as an example in the present specification, the electrode material is not limited to molybdenum, and may be tungsten, a tungsten alloy or a molybdenum alloy.
  • the parallel damascene electrode horn of the present invention can greatly reduce the material cost.
  • about 1.5 g of molybdenum electrode material and 4 g of inlaid copper material are required, and the prior art requires
  • the molybdenum electrode material is 8 g (the above weights all include the loss portion). If the molybdenum electrode material price is 2,500 yuan/kg and the copper material is 50 yuan/kg, the material cost of the embodiment of the present invention is about 5.5 yuan/piece, and the existing The material cost of the technology is about 20 yuan / support.
  • the processing cost since the copper tube of the mosaic is formed by the mold, the area required for machining in the embodiment of the present invention is much reduced, so the processing cost is also lower than that of the prior art.
  • the W1 group is the new parallel electrode horn (tip contact type) of the invention
  • the W2 group is the prior art prestressed electrode horn
  • the first part is the tensile force of the tip of the horn: the same 0.06mm metal wire is placed on the intermediate gap above the contact tip of the electrode tip with the tip area of 0.6mmx0.6mm, and the tensile force is tested and recorded. It was found that the tensile force at the tip end of the W1 group was 500 g, and the tensile force at the tip end of the W2 group was less than 200 g.
  • the second part includes the following three items:
  • the spark When the current is turned on, the spark is excellent in the middle of the contact line of the end face, and it is a good product when the contact line is left or right or below the end face.
  • the novel parallel electrode welding head of the present invention has an ideal end face electric spark and contact resistance, which can effectively extend the service life of the welding head.

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  • Connections Effected By Soldering, Adhesion, Or Permanent Deformation (AREA)

Abstract

Disclosed is a novel parallel electrode welding head, comprising a parallel embedded electrode welding head provided with two embedded electrodes (101, 102). The parallel embedded electrode welding head comprises main body portions (106), electrode tip portions (107), and embedding transition portions (108), wherein the main body portions are portions of embedded bodies (103, 104) of the embedded electrodes, the electrode tip portions are portions of parallel electrode welding head tips of the embedded electrodes made by means of extending electrodes, and the embedding transition portions are portions of the embedded electrodes embedded in the embedded bodies and extending to the electrode tip portions. Further disclosed is a preparation process for a parallel electrode welding head. Due to the embedding transition portions of the parallel electrode welding head being bent inwardly relative to each other, the two electrodes are significantly thickened, the space between the two electrodes is significantly increased, the angle formed by means of the tip of the electrodes being in contact with each other is significantly increased and the contact distance is significantly lengthened, such that the contact force of the electrode tips can be significantly increased, the stability of the welding head tips and the ability to resist impact are enhanced and the service life of the welding head is prolonged.

Description

新型平行电极焊头及其制备方法  Novel parallel electrode welding head and preparation method thereof
技术领域 Technical field
本发明属于电阻焊领域， 更具体地说， 本发明涉及一种以电阻焊直接焊接 漆包线的平行电极焊头及其制备方法。 背景技术  The invention belongs to the field of electric resistance welding, and more particularly to a parallel electrode welding head for directly welding an enameled wire by electric resistance welding and a preparation method thereof. Background technique
在以电阻焊直接焊接漆包线的焊接技术中， 平行电极焊头十分重要。 目前， 现有技术已经公开了多种直接焊接漆包线的平行电极焊头， 例如， 专利申请号 为 CN 93245377.5的"预应力点焊头"， 专利申请号为 CN 01114808.X的"点电焊 焊头"， 专利申请号为 CN 201020696469.0的"平行电极焊头"， 以及专利申请号 为 CN 200510121259.2的"连体电极的电阻焊焊头及其制备方法"。  Parallel electrode horns are important in welding techniques that directly weld enameled wires with resistance welding. At present, the prior art has disclosed a plurality of parallel electrode horns for directly welding enameled wires, for example, "prestressed spot welding head" of the patent application number CN 93245377.5, "point welding horn of patent application number CN 01114808.X" "The parallel electrode welding head of the patent application number CN 201020696469.0, and the "electrical resistance welding head of the joint electrode and the preparation method thereof" of the patent application No. CN 200510121259.2.
但是， 上述现有技术中的平行电极焊头均存在着一个明显的缺陷： 焊头的 使用寿命不理想。  However, the prior art parallel electrode horns have a significant drawback: The life of the horn is not ideal.
有鉴于此， 有必要提供一种具有理想使用寿命的新型平行电极焊头及其制 备方法。 发明内容  In view of this, it is necessary to provide a novel parallel electrode horn having an ideal service life and a method of preparing the same. Summary of the invention
本发明的目的在于： 提供一种具有理想使用寿命的新型平行电极焊头及其 制备方法。  SUMMARY OF THE INVENTION The object of the present invention is to provide a novel parallel electrode horn having a desired service life and a method of preparing the same.
为了实现上述发明目的， 本发明提供了一种新型平行电极焊头， 其包括设 有二个镶嵌电极的平行镶嵌电极焊头。  In order to achieve the above object, the present invention provides a novel parallel electrode horn comprising a parallel damascene electrode horn provided with two damascene electrodes.
作为本发明新型平行电极焊头的一种改进， 所述镶嵌电极设有镶嵌体和镶 嵌于镶嵌体的电极。  As an improvement of the novel parallel electrode horn of the present invention, the damascene electrode is provided with a mosaic and an electrode embedded in the mosaic.
作为本发明新型平行电极焊头的一种改进， 所述镶嵌电极的镶嵌体为铜或 铜合金。 As an improvement of the novel parallel electrode welding head of the present invention, the mosaic of the embedded electrode is copper or Copper alloy.
作为本发明新型平行电极焊头的一种改进， 所述二个镶嵌电极的镶嵌体为 对称设置的半圓柱形镶嵌体。  As an improvement of the novel parallel electrode horn of the present invention, the mosaic of the two damascene electrodes is a symmetrically arranged semi-cylindrical mosaic.
作为本发明新型平行电极焊头的一种改进， 所述二个镶嵌电极的镶嵌体为 对称设置的半圓柱管形镶嵌体。  As an improvement of the novel parallel electrode horn of the present invention, the mosaic of the two embedded electrodes is a symmetrically arranged semi-cylindrical tubular mosaic.
作为本发明新型平行电极焊头的一种改进， 所述镶嵌电极的电极为钨、 钨 合金、 钼或钼合金。  As an improvement of the novel parallel electrode horn of the present invention, the electrode of the embedded electrode is tungsten, a tungsten alloy, a molybdenum or a molybdenum alloy.
作为本发明新型平行电极焊头的一种改进， 所述平行镶嵌电极焊头具有主 体部、 电极尖端部和镶嵌过渡部， 主体部为镶嵌电极的镶嵌体部分， 电极尖端 部为镶嵌电极的电极延伸加工成平行电极焊头尖端的部分， 镶嵌过渡部为镶嵌 电极镶嵌到镶嵌体和向电极尖端部延伸的部分。  As an improvement of the novel parallel electrode horn of the present invention, the parallel damascene electrode horn has a main body portion, an electrode tip portion and a mosaic transition portion, the main body portion is a mosaic portion of the embedded electrode, and the electrode tip portion is an electrode embedded with the electrode Extending the portion processed into the tip of the parallel electrode horn, the inlaid transition portion is a portion in which the damascene electrode is embedded in the insert and extends toward the tip end of the electrode.
作为本发明新型平行电极焊头的一种改进， 所述镶嵌过渡部紧套有热缩套 管。  As an improvement of the novel parallel electrode horn of the present invention, the inlaid transition portion is tightly wrapped with a heat shrinkable sleeve.
作为本发明新型平行电极焊头的一种改进， 所述热缩套管为 PET热缩套管 或 PVC热缩套管。  As an improvement of the novel parallel electrode welding head of the present invention, the heat shrinkable sleeve is a PET heat shrinkable sleeve or a PVC heat shrinkable sleeve.
作为本发明新型平行电极焊头的一种改进， 所述平行镶嵌电极焊头为尖端 不接触的平行镶嵌电极焊头。  As an improvement of the novel parallel electrode horn of the present invention, the parallel damascene electrode horn is a parallel damascene electrode horn which is not in contact with the tip.
作为本发明新型平行电极焊头的一种改进， 所述平行镶嵌电极焊头为尖端 连体的平行镶嵌电极焊头。  As an improvement of the novel parallel electrode horn of the present invention, the parallel damascene electrode horn is a tip-connected parallel damascene electrode horn.
作为本发明新型平行电极焊头的一种改进， 所述平行镶嵌电极焊头为尖端 接触的平行镶嵌电极焊头。  As an improvement of the novel parallel electrode horn of the present invention, the parallel damascene electrode horn is a tip-in contact parallel damascene electrode horn.
为了实现上述发明目的， 本发明还提供了一种新型平行电极焊头的制备方 法， 其包括以下步骤：  In order to achieve the above object, the present invention also provides a method of preparing a novel parallel electrode horn, which comprises the following steps:
1) 电极的制备： 取半圓柱形的电极材料， 在其一端以 < 7°的斜度进行尖端 加工； 在半圓柱形电极材料的平面的中央加工弧形槽， 并以弧形槽为弯曲中心 把电极材料作 < 10°的内弯、 备用； 1) Preparation of the electrode: Take a semi-cylindrical electrode material, and perform tip processing at a slope of < 7° at one end; machine the arc groove at the center of the plane of the semi-cylindrical electrode material, and bend it with an arc groove Center The electrode material is bent at < 10°, ready for use;
2)镶嵌体的制备： 预制半圓柱形铜管， 半圓柱形铜管内设有半圓柱形的内 孔， 内孔与半圓柱形电极材料外形匹配； 把半圓柱形铜管加工成镶嵌体， 并进 行表面处理后备用；  2) Preparation of the inlay: Prefabricated semi-cylindrical copper tube, semi-cylindrical copper tube with semi-cylindrical inner hole, inner hole and semi-cylindrical electrode material shape matching; semi-cylindrical copper tube processed into mosaic , and after surface treatment, spare;
3)镶嵌电极的制备： 取制备好的电极， 把未作尖端加工的一端镶嵌到镶嵌 体的半圓柱形的内孔上， 且镶嵌电极的未镶嵌端长度一致；  3) Preparation of the embedded electrode: taking the prepared electrode, inserting the end without the tip processing into the semi-cylindrical inner hole of the mosaic, and the length of the un-inlaid end of the embedded electrode is uniform;
4) 平行镶嵌电极焊头的制备： 取上述制备好的镶嵌电极在其半圓柱平面上 均匀涂上热固化粘结剂， 把二个镶嵌电极固连成一体， 热固化粘结剂同时作为 二个镶嵌电极之间的绝缘隔层； 在热固化后粘结成一体的平行镶嵌电极焊头镶 嵌体的半圓柱形的内孔上， 以填充剂填充。  4) Preparation of parallel damascene electrode horn: The above prepared electrode is uniformly coated with a heat curing adhesive on its semi-cylindrical plane, and the two embedded electrodes are integrally joined together, and the heat curing adhesive is simultaneously used as two An insulating barrier between the damascene electrodes; a semi-cylindrical inner bore of the parallel inlaid electrode horn insert bonded to the body after heat curing, filled with a filler.
作为本发明新型平行电极焊头的制备方法的一种改进， 步骤 1)中， 所述电 极为钨、 钨合金、 钼或钼合金。  As an improvement of the preparation method of the novel parallel electrode horn of the present invention, in the step 1), the electric material is extremely tungsten, a tungsten alloy, a molybdenum or a molybdenum alloy.
作为本发明新型平行电极焊头的制备方法的一种改进， 步骤 2)中， 所述镶 嵌体为铜或铜合金。  As an improvement of the preparation method of the novel parallel electrode horn of the present invention, in the step 2), the inlay is copper or a copper alloy.
作为本发明新型平行电极焊头的制备方法的一种改进， 步骤 2)中， 所述二 个镶嵌电极的镶嵌体为对称设置的半圓柱形镶嵌体。  As an improvement of the preparation method of the novel parallel electrode welding head of the present invention, in the step 2), the mosaic bodies of the two mosaic electrodes are symmetrically arranged semi-cylindrical mosaic bodies.
作为本发明新型平行电极焊头的制备方法的一种改进， 步骤 2)中， 所述二 个镶嵌电极的镶嵌体为对称设置的半圓柱管形镶嵌体。  As an improvement of the preparation method of the novel parallel electrode welding head of the present invention, in the step 2), the mosaic bodies of the two mosaic electrodes are symmetrically arranged semi-cylindrical tubular mosaic bodies.
作为本发明新型平行电极焊头的制备方法的一种改进， 步骤 4)中， 所述平 行镶嵌电极焊头具有主体部、 电极尖端部和镶嵌过渡部， 主体部为镶嵌电极的 镶嵌体部分， 电极尖端部为镶嵌电极的电极延伸加工成平行电极焊头尖端的部 分， 镶嵌过渡部为镶嵌电极镶嵌到镶嵌体和向电极尖端部延伸的部分。 益技术效果：  As an improvement of the preparation method of the novel parallel electrode welding head of the present invention, in the step 4), the parallel embedded electrode horn has a main body portion, an electrode tip portion and a mosaic transition portion, and the main body portion is a mosaic portion of the embedded electrode. The tip end portion of the electrode is a portion of the electrode of the damascene electrode which is machined into a tip end of the parallel electrode tip, and the inlaid transition portion is a portion in which the damascene electrode is inlaid into the mosaic body and extends toward the tip end portion of the electrode. Benefits of technical effects:
首先， 本发明新型平行电极焊头将现有技术中筒单的平行电极结构改变为 平行镶嵌电极的结构， 平行镶嵌电极焊头具主体部、 电极尖端部和镶嵌过渡部， 由于镶嵌过渡部相向内弯折使得二个电极显著加粗， 二个电极间距显著增大， 二个电极尖端接触部的角度明显增加， 因此， 二个电极尖端产生的接触力也明 显增大， 可以显著增加焊头尖端可靠性、 稳定性和抗沖击能力。 First, the novel parallel electrode horn of the present invention changes the parallel electrode structure of the prior art cartridge to The structure of the parallel embedded electrode, the parallel embedded electrode horn has a main body portion, an electrode tip portion and a mosaic transition portion, and the two electrodes are significantly thickened due to the inward bending of the inlaid transition portion, and the distance between the two electrodes is significantly increased, the two electrodes The angle of the tip contact is significantly increased, so that the contact force generated by the two electrode tips is also significantly increased, which can significantly increase the reliability, stability and impact resistance of the tip.
其次， 本发明新型平行电极焊头的主体部采用导热、 导电性能良好的铜或 铜合金， 相对于现有平行电极焊头的整体都是由钨钼材料延伸而成， 效果非常 明显： 一、 因为钨、 钼的导电导热性能差， 适应机械加工性能也很差， 所以现 有技术的钨钼材料平行电极焊头的长度只能在 25mm-30mm左右， 焊头长度过 长容易出现导电散热不良， 焊头长度过短又影响操作空间和视野。 而本发明采 用散热导电良好的铜或铜合金作为镶嵌平行电极的主体部， 可以随意加长平行 电极焊头的长度， 有利于增加操作空间和加强视野清晰； 二、 相对于铜金属或 铜合金， 钨钼材料价格昂贵 (钨钼的价格约为铜或铜合金的价格的 50倍)， 且铜 或铜合金的加工性能良好 (延展性良好)，采用铜金属或铜合金作为镶嵌平行电极 的主体部可以大大降氏材料成本和加工成本。  Secondly, the main part of the novel parallel electrode welding head of the invention adopts copper or copper alloy with good heat conduction and good electrical conductivity, and the whole parallel electrode welding head is extended by tungsten-molybdenum material, and the effect is very obvious: Because the electrical and thermal conductivity of tungsten and molybdenum is poor, and the mechanical processing performance is also poor, the length of the parallel electrode welding head of the prior art tungsten-molybdenum material can only be about 25mm-30mm, and the length of the welding head is too long, and the conductive heat dissipation is likely to occur. The length of the welding head is too short and affects the operating space and field of view. The invention adopts copper or copper alloy with good heat dissipation and good conductivity as the main body portion of the parallel electrode, and can lengthen the length of the parallel electrode welding head at will, which is beneficial to increase the operation space and enhance the clear vision; 2. Compared with copper metal or copper alloy, Tungsten and molybdenum materials are expensive (the price of tungsten and molybdenum is about 50 times that of copper or copper alloy), and the processing properties of copper or copper alloys are good (good ductility), using copper metal or copper alloy as the main body of the embedded parallel electrode. The department can greatly reduce material cost and processing cost.
再次， 本发明新型平行电极焊头的镶嵌过渡部外加一个热缩套管紧套， 利 用热缩套管受热收缩时产生的收缩力和收缩后的抗拉力， 可增加镶嵌过渡部和 焊头尖端的稳定可靠和抗沖击能力。 由于热缩套管的收缩十分均匀， 收缩后各 部分都能紧紧包裹平行电极焊头， 即使镶嵌过渡部为锥型或不规则锥形也能紧 紧包裹不会发生滑脱。 此外， 热缩套管很薄， 收缩后与包裹的镶嵌过渡部紧塑 成一体， 几乎没有改变镶嵌过渡部原来的外型和体积， 也不会影响焊接操作的 视野， 因此， 紧套在镶嵌过渡部的热缩套管产生的收缩力和收缩后的抗拉力可 以进一步增加尖端接触式平行镶嵌电极焊头的电极尖端部的稳定可靠和抗沖击 能力。  Moreover, the inlaid transition portion of the novel parallel electrode welding head of the present invention is provided with a heat shrinkable sleeve tight sleeve, and the shrinkage force and the tensile force after shrinkage generated by the heat shrinkable sleeve are increased, and the inlaid transition portion and the welding head can be increased. The tip is stable and reliable and impact resistant. Since the shrinkage of the heat shrinkable sleeve is very uniform, the parts after the shrinkage can tightly wrap the parallel electrode horn, and even if the inlaid transition portion is tapered or irregularly tapered, it can be tightly wrapped without slipping. In addition, the heat shrinkable sleeve is thin, and after shrinking, it is tightly integrated with the inlaid transition portion of the package, and the original shape and volume of the inlaid transition portion are hardly changed, and the field of view of the welding operation is not affected, so the sleeve is tightly set in the inlay. The contraction force generated by the heat shrinkable sleeve of the transition portion and the tensile force after shrinkage can further increase the stability and impact resistance of the electrode tip end portion of the tip contact parallel inlaid electrode horn.
本发明选用耐热性、 绝缘性和结构性能较好的 PET (聚酯)热缩套管， 优选收 缩后可耐沖击温度 250°C , Φ4.0ηιηι的 PET热缩套管， 管壁厚度约 0.10mm, 完 全收缩后管可小于 2.0mm。 因此， 热缩套管收缩后就完全与镶嵌过渡部紧塑在 一起并产生很大的收缩力， 收缩后的抗拉力也很强。 综合 PET热缩套管的各种 理化性能， 加上紧套后缩紧的热缩套管基本上没有改变镶嵌过渡部的外形和体 积， 因此在尖端过渡部紧套热缩套管， 完全可以满足对稳定焊头尖端部的要求。 附图说明 The invention adopts PET (polyester) heat shrinkable sleeve with good heat resistance, insulation and structural properties, and preferably adopts PET heat shrinkable sleeve with shrinkage resistance temperature of 250 ° C and Φ4.0 ηιη, wall thickness About 0.10mm, finished The tube after full shrinkage can be less than 2.0 mm. Therefore, after shrinking, the heat shrinkable sleeve is completely tightly molded with the inlaid transition portion and generates a large contraction force, and the tensile strength after shrinkage is also strong. The various physical and chemical properties of the integrated PET heat-shrinkable sleeve, together with the shrink-fitted heat-shrinkable sleeve, do not substantially change the shape and volume of the inlaid transition portion, so the heat-shrinkable sleeve is tightly packed at the tip transition portion. Meet the requirements for the stable tip of the weld head. DRAWINGS
下面结合附图和具体实施方式， 对本发明新型平行电极焊头及其制备方法 进行详细说明， 其中：  The novel parallel electrode welding head of the present invention and a preparation method thereof will be described in detail below with reference to the accompanying drawings and specific embodiments, wherein:
图 1为本发明新型平行电极焊头的第一实施方式的结构示意图。  1 is a schematic view showing the structure of a first embodiment of a novel parallel electrode welding head of the present invention.
图 2为本发明新型平行电极焊头的第二实施方式的结构示意图。  2 is a schematic structural view of a second embodiment of a novel parallel electrode welding head of the present invention.
图 3为本发明新型平行电极焊头的第三实施方式的结构示意图。  3 is a schematic structural view of a third embodiment of a novel parallel electrode welding head of the present invention.
图 4为本发明新型平行电极焊头的第四实施方式的结构示意图。 具体实施方式  4 is a schematic structural view of a fourth embodiment of a novel parallel electrode welding head of the present invention. detailed description
为了使本发明的发明目的、 技术方案及其有益技术效果更加清晰， 以下结 合附图和具体实施方式， 对本发明进行进一步详细说明。 应当理解的是， 本说 明书中描述的具体实施方式仅仅是为了解释本发明， 并非为了限定本发明。  The present invention will be further described in detail below with reference to the drawings and embodiments. The specific embodiments described in the specification are to be construed as illustrative only and not limiting.
首先，对本说明书中提出的 "平行电极焊头"概念作筒单说明：将与焊接电源 正、 负极连接的焊接金属称之为电极； 将二个电极置于焊件的同一侧称之为平 行电极； 将平行电极固连成一体称为之平行电极焊头； 为了便于叙述， 本说明 书中将背景技术提及的可直接焊接漆包线的各种平行电极焊头包括： 预应力电 极焊头、 欧姆接触式平行电极焊头、 连体的平行电极焊头都统称为"尖端接触式 平行电极焊头"。  First of all, the concept of "parallel electrode horn" proposed in this specification is described as a single sheet: the welding metal connected to the positive and negative electrodes of the welding power source is called an electrode; the two electrodes are placed on the same side of the weldment. Electrode; parallel electrode is integrally joined as a parallel electrode horn; for convenience of description, various parallel electrode horns of the directly solderable enameled wire mentioned in the background of the specification include: prestressed electrode horn, ohmic Contact parallel electrode horns and conjoined parallel electrode horns are collectively referred to as "tip contact parallel electrode horns".
尖端接触式平行电极焊头的工作原理为： 机头操纵平行电极焊头压紧被焊 接的漆包线， 当压力达到设定值时导通焊接电源； 大电流通过焊头的尖端， 使 尖端产生高温和电火花， 漆包线上的绝缘漆部分被烫除烧除， 其余部分向两侧 退缩， 棵露金属； 在焊接压力的作用下， 大电流转而流入漆包线内的金属和基 底以实现电阻焊焊接。 换言之， 尖端接触式平行电极焊头能直接焊接漆包线的 先决条件为： 焊头尖端需要保持良好的稳定可靠性， 能不断地产生高温或电火 花烧除绝缘漆， 如果焊头尖端不能产生高温或电火花， 不能烧除绝缘漆， 焊接 也就无法进行。 The working principle of the tip contact parallel electrode welding head is as follows: The head is operated by the parallel electrode welding head to press the welded enameled wire, and the welding power source is turned on when the pressure reaches the set value; the large current passes through the tip of the welding head to make the tip generate high temperature. And the electric spark, the part of the insulating paint on the enameled wire is burned and burned, and the rest is to the sides. Retracting, exposed metal; under the action of welding pressure, large current turns into the metal and substrate in the enameled wire to achieve electric resistance welding. In other words, the prerequisites for direct contact welding of the enameled wire with the tip-contact parallel electrode horn are: The tip of the horn needs to maintain good stability and reliability, and can continuously generate high temperature or electric spark to burn the varnish if the tip of the horn does not produce high temperature or Electric spark, can not burn off the insulating paint, welding can not be carried out.
现有技术的平行电极焊头， 是用约 Φ3.0ηιηι的两个半圓柱电极把其中一端 过渡加工成近似锥形尖端后， 再以绝缘粘胶固连成一体， 其焊头尖端结构具有 以下三个特性： 一是二个电极的绝缘间距 ^艮小， 一般在 0.10mm以下， 因此二个 电极形成尖端接触的角度很小； 二是二个电极形成尖端接触的距离很短， 一般 只有 0.5mm左右； 三是二个电极靠近焊头尖端的部分已被加工得很细很短， 一 般都在 0.25x0.6mm左右。  The parallel electrode welding head of the prior art uses one of the two semi-cylindrical electrodes of about Φ3.0ηιηι to transform one end into an approximately tapered tip, and then solidifies it by integral with an insulating adhesive. The tip structure of the welding head has the following Three characteristics: First, the insulation spacing of the two electrodes is small, generally below 0.10mm, so the angle at which the two electrodes form the tip contact is small; the other is that the distance between the two electrodes forming the tip contact is very short, generally only 0.5. About mm; third, the part of the two electrodes near the tip of the horn has been processed very thin and short, generally around 0.25x0.6mm.
在使用尖端接触式平行电极焊头进行焊接时， 由于焊头尖端是在一定的电 极力作用下， 不断产生电火花烧除绝缘漆并不断产生高温进行焊接， 焊头尖端 在高温条件下不断受电极力和电火花沖击， 会引起焊头尖端接触的不稳定， 进 而造成尖端接触不良或不接触， 影响焊接质量和焊头使用寿命。 如何增加焊头 尖端的稳定可靠和抗沖击能力， 成为直接焊接漆包线的技术难题。  When welding with a tip-contact parallel electrode horn, since the tip of the horn is under a certain electrode force, the electric spark is continuously burned to remove the insulating varnish and the high temperature is continuously generated for welding. The tip of the horn is constantly subjected to high temperature conditions. Electrode force and spark shock can cause instability of the tip of the soldering tip, which can result in poor or no contact of the tip, which affects the quality of the soldering and the life of the soldering tip. How to increase the stability and impact resistance of the tip of the welding head becomes a technical problem of directly welding the enameled wire.
现有技术尖端接触式平行电极焊头存在以下结构缺陷： 整支焊头都是由电 极材料延伸加工而成， 二个电极的间距太小， 因此完全没有增加焊头尖端可靠 稳定的空间和条件。 为了增加平行电极焊头尖端的稳定可靠和抗沖击能力， 本 发明对平行电极焊头的结构进行了以下两个方面的改进： 一是彻底改变现有平 行电极焊头的结构； 二是在平行镶嵌电极焊头的镶嵌过渡部外加绝缘套管。  The prior art tip contact parallel electrode welding head has the following structural defects: The entire welding head is formed by extending the electrode material, and the spacing between the two electrodes is too small, so there is no space and condition for increasing the reliability and stability of the tip of the welding head. . In order to increase the stability and impact resistance of the parallel electrode horn tip, the present invention improves the structure of the parallel electrode horn by the following two aspects: First, completely changing the structure of the existing parallel electrode horn; An insulating sleeve is added to the inlaid transition portion of the parallel inlaid electrode horn.
为了增加焊头尖端的稳定可靠和抗沖击能力， 本发明首先彻底改变现有技 术平行电极焊头的结构 (现有技术的平行电极焊头， 整支焊头都是用电极材料延 伸加工而成， 二个电极的间距太小， 二个电极尖端接触的角度很小）。 本发明提 出的新型平行电极焊头包括二个对称的平行镶嵌电极， 镶嵌电极的结构是把电 极的一端紧紧镶嵌到另一种金属或合金上， 因此镶嵌电极含有电极和镶嵌体二 种不同的金属或合金。 由二个镶嵌电极构成的平行镶嵌电极焊头的结构包括主 体部、 电极尖端部和镶嵌过渡部： 在二个镶嵌电极的镶嵌体之间以绝缘间隔层 分隔， 并通过绝缘间隔层把二个镶嵌电极连成一体， 即构成平行镶嵌电极焊头。 二个镶嵌体组成平行镶嵌电极焊头的主体部， 二个电极的一端加工成平行镶嵌 电极焊头尖端的部分， 构成了电极尖端部， 二个电极的另一端分別紧密镶嵌到 镶嵌体上， 电极与镶嵌体连接与过渡部分构成镶嵌过渡部。 镶嵌的电极为钨金 属、 钼金属、 钨合金或钼合金， 镶嵌体为导电导热性能好和延展性好的铜金属 或铜合金。 In order to increase the stability and impact resistance of the tip of the horn, the present invention firstly completely changes the structure of the prior art parallel electrode horn (the prior art parallel electrode horn, the entire horn is extended by electrode material processing In this case, the spacing between the two electrodes is too small, and the angle at which the two electrode tips are in contact is small). The novel parallel electrode welding head proposed by the invention comprises two symmetric parallel embedded electrodes, and the structure of the embedded electrode is electric One end of the pole is tightly mounted to another metal or alloy, so the damascene electrode contains two different metals or alloys of electrodes and mosaics. The structure of the parallel damascene electrode horn consisting of two damascene electrodes comprises a body portion, an electrode tip portion and a damascene transition portion: separated by an insulating spacer between the mosaic electrodes of the two damascene electrodes, and two through the insulating spacer layer The damascene electrodes are integrated to form a parallel damascene electrode horn. The two mosaics form a main portion of the parallel embedded electrode horn, and one end of the two electrodes is processed into a portion parallel to the tip end of the electrode horn, forming a tip end portion of the electrode, and the other ends of the two electrodes are closely embedded in the mosaic body, The electrode is connected to the mosaic and the transition portion forms a mosaic transition. The mounted electrode is a tungsten metal, a molybdenum metal, a tungsten alloy or a molybdenum alloy, and the inlay is a copper metal or a copper alloy having good electrical and thermal conductivity and good ductility.
请参阅图 1 所示， 为本发明新型平行电极焊头的第一实施方式的示意图， 其包括二个电极 101、 102, 镶嵌体 103、 104和绝缘间隔层 105 , 电极 101、 102 的一端镶嵌到镶嵌体 103、 104形成镶嵌电极，二个镶嵌电极通过绝缘间隔层 105 牢固连结成一体即构成了本发明新型平行电极焊头-平行镶嵌电极焊头， 二个镶 嵌体 103、 104形成了平行镶嵌电极焊头的主体部 106, 主体部 106为焊头与焊 接电源连接的部分， 二个电极 101、 102的一端延伸加工成平行镶嵌电极焊头尖 端， 形成电极尖端部 107, 电极尖端部 107为焊头进行焊接工作的部分， 二个电 极 101、 102的另一端镶嵌到镶嵌体 103、 104中， 电极 101、 102与镶嵌体 103、 104连接过渡的部分形成镶嵌过渡部 108。 平行镶嵌电极焊头通过主体部 106安 装在焊头夹上， 焊头夹与机头连接， 焊接电源通过输出电缆与焊头夹连接。  Referring to FIG. 1, a schematic view of a first embodiment of a novel parallel electrode horn of the present invention includes two electrodes 101, 102, mosaics 103, 104 and an insulating spacer layer 105. One end of the electrodes 101, 102 is inlaid. The damascene electrodes 103 and 104 form a damascene electrode, and the two damascene electrodes are firmly connected by the insulating spacer layer 105 to form a novel parallel electrode horn-parallel inlaid electrode horn of the present invention, and the two mosaic bodies 103 and 104 form a parallel. The body portion 106 of the electrode horn is embedded, and the body portion 106 is a portion where the horn is connected to the welding power source. One ends of the two electrodes 101, 102 are extended to be parallel to the tip of the fused electrode horn, and the electrode tip portion 107 is formed. The electrode tip portion 107 The other end of the two electrodes 101, 102 is embedded in the mosaics 103, 104 for the portion of the horn to be soldered, and the transitions 108 are formed by the portions of the electrodes 101, 102 that are connected to the mosaics 103, 104. The parallel damascene electrode horn is mounted on the horn clip by the body portion 106, the horn clip is connected to the head, and the welding power source is connected to the horn clip through the output cable.
根据本发明的一个优选实施方式， 镶嵌体 103、 104可以做成半圓柱形， 并 进一步以模具拉制成半圓形管材， 如此， 不但便于二个镶嵌体 103、 104的连接 固定形成圓柱体， 还便于平行镶嵌电极焊头在焊头夹上安装。 此外， 如果以模 具拉制的半圓形管材的铜金属或铜合金镶嵌体 103、 104, 还能进一步增加镶嵌 体 103、 104的散热和导电， 降氏材料成本和加工成本。  According to a preferred embodiment of the present invention, the mosaics 103, 104 may be formed in a semi-cylindrical shape and further drawn into a semi-circular tube by a mold, so that the connection of the two mosaics 103, 104 is facilitated to form a cylinder. It also facilitates the installation of parallel damascene electrode horns on the horn clips. In addition, if the copper metal or copper alloy inserts 103, 104 of the semicircular tubing drawn by the mold can further increase the heat dissipation and conduction of the inserts 103, 104, the material cost and processing cost of the material.
与现有技术相比，本发明新型平行电极焊头由于镶嵌过渡部 108的电极 101、 102明显加粗， 镶嵌过渡部 108的二个电极 101、 102的间距明显增加， 镶嵌过 渡部 108处的二个电极尖端的接触角度也明显增加， 镶嵌过渡部 108处焊头尖 端的距离也明显加长， 因此二个电极 101、 102产生的接触力也明显增大， 可以 显著增加焊头尖端的可靠性稳定性和抗沖击能力。 Compared with the prior art, the novel parallel electrode horn of the present invention has an electrode 101 embedded in the transition portion 108, 102 is obviously thickened, the pitch of the two electrodes 101, 102 of the inlaid transition portion 108 is significantly increased, the contact angle of the two electrode tips at the inlaid transition portion 108 is also significantly increased, and the distance between the tips of the soldering tip at the inlaid transition portion 108 is also significant. The lengthening is increased, so that the contact force generated by the two electrodes 101, 102 is also significantly increased, which can significantly increase the reliability stability and impact resistance of the tip of the horn.
以下结合图 1 ,详细说明本发明新型平行电极焊头的第一实施方式的制作过 程：将二个对称的电极 101、 102的一端分別紧紧地镶嵌到二个对称的镶嵌体 103、 104上， 即构成二个对称的镶嵌电极。 在图示实施方式中， 电极 101、 102可以 是钨电极、 钨合金电极、 钼电极或钼合金电极， 电极 101、 102既可做成半圓柱 形， 也可以做成圓柱形（即电极的横截面为圓形或半圓形）， 镶嵌体 103、 104可 以是铜棒或铜管。 在图示实施方式中， 镶嵌体 103、 104为半圓柱形的铜管， 以 绝缘粘胶作二个镶嵌电极的绝缘间隔层 105 ,并通过绝缘粘胶把二个镶嵌电极连 结成一体， 形成圓柱形的平行镶嵌电极焊头， 二个镶嵌体 103、 104形成主体部 106; 电极 101、 102的一端作尖端过渡加工成约 0.3*0.6mm的焊头尖端端面， 并把二个电极 101、 102镶嵌连接处分別向相对的方向作小角度内弯， 使二个电 极 101、 102的尖端充分接触， 形成电极尖端部 107, 电极 101、 102的另一端牢 固地镶嵌到镶嵌体 103、 104上， 该部分和电极 101、 102向焊头尖端过渡的部 分构成了镶嵌过渡部 108。 如此， 即构成了具有主体部 106、 电极尖端部 107和 镶嵌过渡部 108的尖端接触式平行镶嵌电极焊头。  Hereinafter, the manufacturing process of the first embodiment of the novel parallel electrode horn of the present invention will be described in detail with reference to FIG. 1, in which one ends of two symmetrical electrodes 101, 102 are tightly mounted on two symmetrical mosaics 103, 104, respectively. That constitutes two symmetrical mosaic electrodes. In the illustrated embodiment, the electrodes 101, 102 may be tungsten electrodes, tungsten alloy electrodes, molybdenum electrodes or molybdenum alloy electrodes, and the electrodes 101, 102 may be either semi-cylindrical or cylindrical (ie, the cross-section of the electrodes). The cross section is circular or semi-circular), and the inlays 103, 104 may be copper rods or copper tubes. In the illustrated embodiment, the mosaic bodies 103, 104 are semi-cylindrical copper tubes, and the insulating adhesive layer is used as the insulating spacer layer 105 of the two embedded electrodes, and the two mosaic electrodes are integrally connected by the insulating adhesive to form a cylindrical parallel-embedded electrode horn, two inlays 103, 104 forming a main body portion 106; one end of the electrodes 101, 102 is tip-transformed into a tip end of the horn of about 0.3 * 0.6 mm, and the two electrodes 101, The inlaid joints are respectively bent at a small angle in opposite directions, so that the tips of the two electrodes 101, 102 are in sufficient contact to form the electrode tip portion 107, and the other ends of the electrodes 101, 102 are firmly embedded in the mosaics 103, 104. The portion and the portion of the electrodes 101, 102 that transition to the tip of the horn constitute a tessellation transition 108. Thus, a tip contact type parallel damascene electrode horn having a main body portion 106, an electrode tip portion 107, and a damascene transition portion 108 is constructed.
本发明新型平行电极焊头的镶嵌体采用导热、 导电性能良好的铜或铜合金， 相对于现有技术平行电极焊头整体都是由钨钼材料延伸而成， 效果明显： 一、 由于钨钼的导电导热性能差， 适应机械加工性能也差的钨钼材料， 现有技术电 阻焊平行电极焊头一般采用 3x30mm左右，焊头长度过长容易出现导电散热不 良， 焊头加粗又增加材料成本， 焊头长度过短又影响操作空间和视野。 本发明 把二个电极镶嵌到散热导电良好的铜或铜合金上， 镶嵌平行电极焊头的主体部 可以随意加长加粗至 Φ4.5χ45ηιηι或以上， 有利于增加操作空间和视野清晰， 有 利于增加导电面积和散热； 二、 相对于铜金属， 钨钼材料价格昂贵 (钨钼的价格 约为铜的价格的 50倍)，且铜或铜合金的机械加工性能延展性良好。本发明采用 铜或铜合金镶嵌体的平行镶嵌电极焊头可以大大降低材料成本和加工成本。 The mosaic body of the novel parallel electrode welding head adopts copper or copper alloy with good heat conduction and good electrical conductivity, and the parallel electrode welding head is extended from tungsten and molybdenum material as a whole, and the effect is obvious: 1. Due to tungsten and molybdenum The conductive and thermal conductivity is poor, and it is suitable for tungsten-molybdenum materials with poor machinability. The prior art resistance welding parallel electrode welding head generally adopts about 3x30mm. The length of the welding head is too long, and the conductive heat dissipation is poor, the welding head is thick and the material cost is increased. The length of the welding head is too short and affects the operating space and field of view. The invention inserts two electrodes into the copper or copper alloy with good heat conduction and good conductivity, and the main body portion of the parallel electrode welding head can be lengthened and thickened to Φ4.5χ45ηιηι or above at will, which is beneficial to increase the operation space and clear vision. Conducive to increase the conductive area and heat dissipation; Second, compared to copper metal, tungsten and molybdenum materials are expensive (the price of tungsten and molybdenum is about 50 times the price of copper), and the mechanical properties of copper or copper alloys are good. The parallel embedded electrode horn of the invention using copper or copper alloy inlay can greatly reduce material cost and processing cost.
需要指出的是， 平行镶嵌电极的结构； 平行镶嵌电极焊头具主体部、 电极 尖端部、 镶嵌过渡部的结构； 镶嵌体为半圓柱形铜金属的结构； 镶嵌体为半圓 柱形管材的结构都是由本发明首先公开的技术特征。  It should be noted that the structure of the parallel embedded electrode; the structure of the parallel embedded electrode horn with the main body portion, the electrode tip portion, and the mosaic transition portion; the mosaic body is a semi-cylindrical copper metal structure; the mosaic body is a semi-cylindrical tube structure Both are technical features first disclosed by the present invention.
下面介绍本发明新型平行电极焊头的第二实施方式。  Next, a second embodiment of the novel parallel electrode horn of the present invention will be described.
现有技术中， 要在焊头尖端外加绝缘套管十分困难， 原因主要包括如下几 个方面：  In the prior art, it is very difficult to add an insulating sleeve to the tip of the welding head, and the reasons mainly include the following aspects:
一、漆包线 ^艮细，一般小于 O.lOmm, 引出线又 ^艮短，一般只有 10多毫米， 而焊接又必需在靠近漆包线引出的近端 l-2mm, 焊头尖端的长度很短， 在这样 窄小的空间外加普通的绝缘套管十分困难；  First, the enamelled wire ^ 艮 fine, generally less than O.lOmm, the lead wire is short, generally only 10 mm, and the welding must be near the end of the enameled wire l-2mm, the tip of the tip is very short, in Such a small space plus a common insulating sleeve is very difficult;
二、 现有技术二个电极之间的间距很小， 只有 0.05-0.10mm, 在必需保证焊 头尖端导电良好的前提下， 如何增加其又短又细又薄的尖端接触的稳定可靠变 得极其困难；  2. The spacing between the two electrodes in the prior art is very small, only 0.05-0.10 mm. Under the premise that the tip of the welding head must be well-conducted, how to increase the stability and reliability of the short, thin and thin tip contact becomes Extremely difficult;
三、 一般平行电极焊头焊头的外形大都以圓柱体通过锥形或不规则锥形过 渡到尖端， 要在这样的圓锥体或不规则锥形上加工绝缘套管十分困难， 且套上 后又十分容易滑脱， 因此在尖端过渡部牢固套上普通的绝缘套管也是困难重重； 四、 必需要保证焊接操作时的视野清晰， 直接焊接漆包线属于显微焊接， 被焊接的漆包线一般小于 O. lOmm, 即使在最短的工作距离， 正常人也无法看 清焊件更无法分辩焊接效果， 必需借助显微光学装置才能保证视野的清晰， 在 这样的条件下， 既在尖端过渡部外加绝缘套管又不影响视野和操作几乎不可能 实现。  Third, the shape of the general parallel electrode horn weld head is mostly a cylinder with a tapered or irregular tapered transition to the tip. It is very difficult to machine the insulating sleeve on such a cone or irregular cone. After that, it is very easy to slip off. Therefore, it is difficult to firmly put on the ordinary insulating sleeve at the tip transition. Fourth, it is necessary to ensure clear vision during the welding operation. The direct welding enameled wire belongs to micro-welding, and the enameled wire to be welded is generally smaller than O. lOmm, even at the shortest working distance, normal people can't see the weldment and can't distinguish the welding effect. Microscopic optics must be used to ensure the clear vision. Under such conditions, the insulating sleeve is added to the tip transition. The tube does not affect the field of view and the operation is almost impossible to achieve.
请参阅图 2所示， 为本发明新型平行电极焊头的第二实施方式的结构示意 图， 其结构与本发明的第一实施方式基本相同， 包括主体部 201、 固连二个电极 的绝缘间隔层 202、 镶嵌过渡部 203 , 以及电极尖端部 205。 与本发明的第一实 施方式不同的是， 为了进一步增加平行镶嵌电极焊头的电极尖端部的稳定可靠 和抗沖击能力， 在本发明的第二实施方式中， 在镶嵌过渡部 203 外加一个热缩 套管 204紧套， 利用热缩套管 204受热收缩时产生的收缩力和收缩后具有的抗 拉力， 增加电极尖端部 205 的稳定性可靠性和抗沖击能力。 由于热缩套管 204 收缩十分均匀， 收缩后各部分都能紧紧包裹平行电极焊头， 即使锥型过渡或其 它不规则的外形过渡也能紧紧包裹不会发生滑脱。 此外， 热缩套管 204很薄， 收缩后与包裹的镶嵌过渡部 203 紧塑成一体， 几乎没有改变镶嵌过渡部 203原 来的外型和体积， 因而绝对不会影响焊接操作的视野。 本发明第二实施方式的 其他结构与本发明的第一实施方式相同， 不再赘述。 Referring to FIG. 2, it is a schematic structural view of a second embodiment of a novel parallel electrode horn according to the present invention. The structure is basically the same as that of the first embodiment of the present invention, and includes a main body portion 201 and two electrodes fixed thereto. The insulating spacer 202, the damascene transition portion 203, and the electrode tip portion 205. Different from the first embodiment of the present invention, in order to further increase the stability and impact resistance of the electrode tip end portion of the parallel damascene electrode horn, in the second embodiment of the present invention, an additional one is added to the mosaic transition portion 203. The heat shrinkable sleeve 204 is tightly fitted, and the contraction force generated when the heat shrinkable sleeve 204 is contracted by heat and the tensile force after shrinkage are increased, and the stability reliability and impact resistance of the electrode tip end portion 205 are increased. Since the heat shrinkable sleeve 204 shrinks very evenly, the portions after the shrinkage can tightly wrap the parallel electrode horn, even if the tapered transition or other irregular shape transition can be tightly wrapped without slipping. In addition, the heat shrinkable sleeve 204 is thin and shrinks and is tightly integrated with the inlaid transition portion 203 of the package, and the original shape and volume of the inlaid transition portion 203 are hardly changed, so that the field of view of the welding operation is never affected. Other configurations of the second embodiment of the present invention are the same as those of the first embodiment of the present invention, and will not be described again.
热缩套管有 PVC热缩套管和 PET (聚酯)热缩套管， 本发明选用耐热性、 绝 缘性和结构性能较好的聚酯热缩套管，优选 Φ4.0ηιηι聚酯热缩套管 (又称 PET热 缩套管）， 因为 PET热缩套管具有更好的耐热性、 绝缘性和结构性， 其收缩后可 耐沖击温度 250°C。 根据本发明的优选一个实施方式， PET 热缩套管的内径为 Φ4.0ηιηι, 管壁厚约 0.10mm, 在完全收缩后管径可小于 Φ2.0ηιηι, 如此， 热缩套 管收缩后就完全与镶嵌过渡部 203 紧塑在一起并产生^艮大的收缩力， 收缩后的 抗拉力也 4艮强。 综合 PET热缩套管的各种理化性能， 加上紧套后缩紧的热缩套 管 204基本上没有改变镶嵌过渡部 203 的外形和体积， 因此在镶嵌过渡部 203 紧套热缩套管 204, 完全可以满足增加焊头尖端稳定性可靠性的要求。  The heat shrinkable sleeve has a PVC heat shrinkable sleeve and a PET (polyester) heat shrinkable sleeve. The present invention selects a polyester heat shrinkable sleeve which is excellent in heat resistance, insulation and structural properties, preferably Φ4.0ηιηι polyester heat Shrink tubing (also known as PET heat shrink tubing), because PET heat shrink tubing has better heat resistance, insulation and structure, and its shrinkage resistance can be 250 °C. According to a preferred embodiment of the present invention, the inner diameter of the PET heat shrinkable sleeve is Φ4.0ηιηι, the wall thickness of the tube is about 0.10 mm, and the diameter of the tube after shrinking is less than Φ2.0ηιηι, so that the heat shrinkable sleeve is completely contracted. It is tightly molded with the inlaid transition portion 203 and produces a large contraction force, and the tensile force after contraction is also too strong. The various physical and chemical properties of the integrated PET heat shrinkable sleeve, together with the shrink-wrapped heat shrinkable sleeve 204, do not substantially change the shape and volume of the inlaid transition portion 203, so the heat shrinkable sleeve is tightly fitted in the inlaid transition portion 203. 204, can fully meet the requirements of increasing the reliability of the tip stability.
在镶嵌过渡部外加热缩套管紧套的结构虽然筒单， 但是， 在本领域中一直 没有相关的报道或尝试， 原因在于： 在进行电阻焊焊接时， 焊头尖端产生的温 度高达 1000°C以上， 而 PET热缩套管的耐热温度只有 250°C左右， 本领域的技 术人员通常认为 PET热缩套管不能承受焊接过程中的高温。  Although the structure of the shrink sleeve outside the inlaid transition portion is simple, there has been no related report or attempt in the art because: the temperature generated by the tip of the weld head is as high as 1000° during resistance welding. Above C, and the heat-resistant temperature of the PET heat-shrinkable sleeve is only about 250 ° C, those skilled in the art generally believe that the PET heat-shrinkable sleeve cannot withstand the high temperature during the welding process.
但是， 本申请的发明人经过长期研究和实验后， 克服了本领域的技术人员 的认识偏见， 大胆地在镶嵌过渡部上应用热缩套管紧套， 增加了焊头尖端的稳 定可靠和抗沖击能力， 并取得令人意想不到的技术效果。 经分析， 本发明能够 提出在镶嵌过渡部应用热缩套管的原因在于： 一、 由于本发明的镶嵌体为散热 良好的铜金属， 且镶嵌部明显加粗， 大大增加了焊头导热散热的体积和面积； 二、直接焊接漆包线的时间很短，一般只有 10多毫秒， 因而产生的热量并不多； 三、 由于每一次点焊后都要移动工件和对工件进行定位， 所以焊接间隔时间较 长 (一般手动焊接间隔时间在 3秒以上， 自动焊接间隔时间在 2秒以上）， 因此， 焊接瞬间产生的高温很容易通过焊头的镶嵌体和焊头夹传导散热而不会在镶嵌 过渡部累积。 However, after long-term research and experiments, the inventors of the present application overcome the knowledge bias of those skilled in the art, boldly apply a heat shrinkable sleeve tight sleeve on the inlaid transition portion, and increase the stability of the tip of the soldering tip. Reliable and impact resistant, and achieved unexpected technical results. After analysis, the invention can propose that the heat shrinkable sleeve is applied in the mosaic transition portion because: 1. Since the mosaic body of the invention is a copper metal with good heat dissipation, and the inlaid portion is obviously thickened, the heat conduction and heat dissipation of the welding head are greatly increased. Volume and area; Second, the time for direct welding of the enameled wire is very short, generally only 10 milliseconds, so the heat generated is not much; Third, since each spot welding must move the workpiece and position the workpiece, so the welding interval Longer (generally, the manual welding interval is more than 3 seconds, and the automatic welding interval is more than 2 seconds). Therefore, the high temperature generated by the welding is easy to conduct heat through the insert and the welding head of the welding head without being in the mosaic transition. Department accumulation.
需要指出的是， 本发明提出的平行镶嵌电极焊头， 平行镶嵌电极焊头具主 体部、 电极尖端部和镶嵌过渡部的结构； 半圓柱形镶嵌体的结构， 在平行镶嵌 电极焊头的镶嵌过渡部外置热缩套管的结构， 不仅适用于尖端接触式的平行电 极焊头， 也适用于尖端不接触式的平行电极焊头和尖端连体式的平行电极焊头， 在尖端不接触式的平行电极焊头或尖端连体式的平行电极焊头上应用本发明提 出的结构， 均落入本发明的权利保护范围。  It should be noted that the parallel embedded electrode horn of the present invention, the parallel embedded electrode horn has a structure of a main body portion, an electrode tip portion and a mosaic transition portion; the structure of the semi-cylindrical mosaic body, the mosaic of the parallel embedded electrode horn The structure of the external heat-shrinkable sleeve of the transition part is applicable not only to the tip-contact type parallel electrode welding head, but also to the tip-contact non-contact parallel electrode welding head and the tip-connected parallel electrode welding head, which are not in contact at the tip end. The use of the structure proposed by the present invention on a parallel electrode horn or a tip-connected parallel electrode horn is within the scope of the present invention.
附图 3 为本发明新型平行电极焊头的第三实施方式的结构示意图， 其结构 与本发明的第一和第二实施方式相似， 包括主体部 301、 固连二个电极的绝缘间 隔层 302、 镶嵌过渡部 303、 外置的热缩管 304, 以及电极尖端部 305。 与本发 明的第一和第二实施方式的尖端接触式的平行电极焊头不同的是， 在本发明新 型平行电极焊头的第三实施方式中， 二个电极的电极尖端部 305不接触。  3 is a schematic structural view of a third embodiment of a novel parallel electrode horn according to the present invention, the structure of which is similar to the first and second embodiments of the present invention, and includes a main body portion 301 and an insulating spacer layer 302 to which two electrodes are fixed. The inlaid transition portion 303, the external heat shrinkable tube 304, and the electrode tip end portion 305. Unlike the tip-contact type parallel electrode horn of the first and second embodiments of the present invention, in the third embodiment of the novel parallel electrode horn of the present invention, the electrode tip portions 305 of the two electrodes are not in contact.
附图 4 为本发明新型平行电极焊头的第四实施方式的结构示意图， 其结构 与本发明的第一和第二实施方式相似， 包括主体部 401、 固连二个电极的绝缘间 隔层 402、 镶嵌过渡部 403、 外置的热缩管 404, 以及电极尖端部 405。 与本发 明的第一和第二实施方式的尖端接触式的平行电极焊头不同的是， 在本发明新 型平行电极焊头的第三实施方式中， 二个电极的电极尖端部 405为连体设置。  4 is a schematic structural view of a fourth embodiment of a novel parallel electrode horn according to the present invention, which has a structure similar to the first and second embodiments of the present invention, and includes a main body portion 401 and an insulating spacer layer 402 to which two electrodes are attached. The inlaid transition portion 403, the external heat shrinkable tube 404, and the electrode tip end portion 405. Unlike the tip-contact type parallel electrode horn of the first and second embodiments of the present invention, in the third embodiment of the novel parallel electrode horn of the present invention, the electrode tip portions 405 of the two electrodes are connected Settings.
以下结合附图 1 , 以尖端接触式平行镶嵌电极焊头为例， 介绍平行镶嵌电极 焊头的制备方法， 其制备工艺包括以下四个主要工序： Referring to Figure 1 below, a parallel-contact parallel-mounted electrode tip is taken as an example to introduce a parallel damascene electrode. The preparation method of the welding head includes the following four main processes:
1. 电极的制备工序  1. Electrode preparation process
取 Φ3.2χ15ηιηι的半圓柱形的钼杆电极， 在其中的一端以 < 7°的斜度把尖端 加工成 0.25x0.6mm的端面；  Taking a semi-cylindrical molybdenum rod electrode of Φ3.2χ15ηιηι, at one end thereof, the tip is processed into an end surface of 0.25x0.6 mm with a slope of <7°;
在半圓柱钼杆的平面的中央， 加工一个长约 2mm、 深约 0.5mm弧形槽， 并 以弧形为弯曲中心， 把钼杆电极作 < 10°的内弯、 备用。  In the center of the plane of the semi-cylindrical molybdenum rod, an arc groove of about 2 mm in length and about 0.5 mm in depth is machined, and the molybdenum rod electrode is bent at 10 ° in the center of the curve.
2. 镶嵌体的制备工序  2. Preparation process of mosaic
预制半圓柱形铜管， 半圓柱形铜管可通过模具拉制， 半圓柱形铜管内设有 Φ3.2ηιηι的半圓柱形的内孔，要求内孔与备用的半圓柱形钼电极紧密配合， 半圓 柱形铜管的外径约为 Φ4.5ηιηι的半圓柱体。  Prefabricated semi-cylindrical copper tube, semi-cylindrical copper tube can be drawn by die, semi-cylindrical inner hole with Φ3.2ηιηι inside the semi-cylindrical copper tube, the inner hole is required to closely match the spare semi-cylindrical molybdenum electrode The semi-cylindrical copper tube has a semi-cylindrical shape with an outer diameter of approximately Φ4.5 ηιηι.
把半圓柱形铜管加工成 40mm长的镶嵌体， 并进行表面处理后备用。  The semi-cylindrical copper tube is processed into a 40 mm long mosaic and subjected to surface treatment for use.
3. 镶嵌电极的制备工序  3. Preparation process of embedded electrode
1)取制备好的电极， 把未作尖端加工的一端镶嵌到备好镶嵌体的半圓柱形 的内孔上， 由于制备好的电极已作了 < 10°的内弯， 所以能保证电极镶嵌得十分 紧密。  1) Take the prepared electrode, and insert the end without the cutting edge into the semi-cylindrical inner hole of the prepared insert. Since the prepared electrode has made an inner bend of < 10°, the electrode inlay can be ensured. Very close.
2)对镶嵌体的未镶嵌端进行研磨， 以保证每支镶嵌电极的长度一致。  2) Grind the unset end of the mosaic to ensure that the length of each embedded electrode is the same.
4. 平行镶嵌电极焊头的制备工序  4. Preparation process of parallel embedded electrode horn
1)取上述制备好的镶嵌电极， 在其半圓柱平面上均匀涂上 LOCTITE牌热 固化粘结剂， 把二个镶嵌电极固连成一体， 热固化粘结剂同时作二个镶嵌电极 之间的绝缘间隔层， 在热固化粘结时， 通过固连二个半圓柱形镶嵌电极的夹具 的作用力， 保证平行镶嵌电极焊头的尖端接触紧密和可靠。  1) taking the above-mentioned prepared embedded electrode, uniformly coating LOCTITE brand thermal curing adhesive on its semi-cylindrical plane, solidifying the two embedded electrodes into one body, and thermally curing the adhesive at the same time as two embedded electrodes The insulating spacer layer, when thermally bonded, ensures the tight and reliable tip contact of the parallel damascene electrode horn by the force of the fixture that fixes the two semi-cylindrical embedded electrodes.
2) 在热固化后粘结成一体的平行镶嵌电极焊头镶嵌体的半圓柱形的内孔 上， 以填充剂填充， 即完成尖端接触式平行镶嵌电极焊头的制备， 制备好的尖 端接触式平行镶嵌电极焊头端面为 0.5x0.6mm的长方形端面， 适应于焊接线径 Φ0.12mm左右或以下的细漆包线。 需要说明的是， 虽然在本说明书中以钼电极为例进行了说明， 但是， 电极 材料并不局限于钼， 也可以是钨、 钨合金或钼合金。 2) After heat curing, the semi-cylindrical inner hole of the parallel embedded electrode horn insert is bonded with a filler, that is, the preparation of the tip-contact parallel damascene electrode horn is completed, and the prepared tip contact is prepared. The parallel-shaped inlaid electrode welding head has a rectangular end face of 0.5x0.6mm, and is suitable for a fine enameled wire with a wire diameter of about 0.12 mm or less. Incidentally, although the molybdenum electrode has been described as an example in the present specification, the electrode material is not limited to molybdenum, and may be tungsten, a tungsten alloy or a molybdenum alloy.
在此， 有必要进一步详细说明本发明平行镶嵌电极焊头可大大降低材料成 本， 根据本发明制备方法的实施例需钼电极材料约 1.5g, 镶嵌体铜材为 4g, 而 现有技术约需钼电极材料为 8g (上述重量均包含损耗部分)，如果以钼电极材料价 格 2500元 /kg、铜材 50元 /kg计算， 本发明实施例的材料成本约为 5.5元 /支， 而 现有技术的材料成本为约 20元 /支。 至于加工成本方面， 由于镶嵌体的铜管是通 过模具拉制成型， 本发明实施例需机械加工的面积减少了很多， 所以其加工成 本也比现有技术要低。 实验测试  Here, it is necessary to further explain in detail that the parallel damascene electrode horn of the present invention can greatly reduce the material cost. According to the embodiment of the preparation method of the present invention, about 1.5 g of molybdenum electrode material and 4 g of inlaid copper material are required, and the prior art requires The molybdenum electrode material is 8 g (the above weights all include the loss portion). If the molybdenum electrode material price is 2,500 yuan/kg and the copper material is 50 yuan/kg, the material cost of the embodiment of the present invention is about 5.5 yuan/piece, and the existing The material cost of the technology is about 20 yuan / support. As for the processing cost, since the copper tube of the mosaic is formed by the mold, the area required for machining in the embodiment of the present invention is much reduced, so the processing cost is also lower than that of the prior art. Experimental test
取相同电极尖端端面面积的两组平行电极焊头进行测试记录， 其中， W1组 为本发明新型平行电极焊头 (尖端接触式)， W2组为现有技术的预应力电极焊头， 测试内容包括二部分：  Two sets of parallel electrode horns with the same end face area of the electrode were taken for test recording. Among them, the W1 group is the new parallel electrode horn (tip contact type) of the invention, and the W2 group is the prior art prestressed electrode horn, the test content Includes two parts:
第一部分内容为焊头尖端部的抗拉力：以相同 0.06mm的金属线置于尖端面 积为 0.6mmx0.6mm二个电极尖端接触部上方的中间间隙上， 测试并记录其抗拉 力， 结果发现 W1组焊头尖端部的抗拉力都大 500g, 而 W2组焊头尖端部的抗 拉力都小于 200g。  The first part is the tensile force of the tip of the horn: the same 0.06mm metal wire is placed on the intermediate gap above the contact tip of the electrode tip with the tip area of 0.6mmx0.6mm, and the tensile force is tested and recorded. It was found that the tensile force at the tip end of the W1 group was 500 g, and the tensile force at the tip end of the W2 group was less than 200 g.
第二部分内容包括以下三项：  The second part includes the following three items:
1. 观察焊头尖端部端面电火花情况：  1. Observe the electric spark at the end of the tip of the welding head:
导通电流， 电火花在端面接触线正中间为优良品， 在接触线偏左或偏右或 在端面以下者为合格品。  When the current is turned on, the spark is excellent in the middle of the contact line of the end face, and it is a good product when the contact line is left or right or below the end face.
2. 常温下焊头尖端部的电阻值： 接触电阻 5ηιΩ为优良品， > 5ηιΩ为合格 口口  2. Resistance value at the tip of the welding head at normal temperature: Contact resistance 5ηιΩ is good, > 5ηιΩ is qualified
3. 焊头寿命： 焊头寿命测试条件为： 用 Φ0.08漆包线在铁镍合金基底上进 行点焊，焊接参数设定： 焊接力 F=6.0N,焊接电压 V=1.00V,焊接时间 T=10ms, 评定方法为焊接点数 10000点以上为优； 5000-10000点为良； 3000-5000点为合 格， <3000点为次品， 实验测试结果如表 1所示。 3. Weld head life: The test life of the welding head is as follows: Use Φ0.08 enameled wire on the iron-nickel alloy substrate. Line spot welding, welding parameter setting: welding force F=6.0N, welding voltage V=1.00V, welding time T=10ms, the evaluation method is excellent for welding points of 10000 points or more; 5000-10000 points is good; 3000-5000 The points are qualified, <3000 points are defective, and the experimental test results are shown in Table 1.
表 1 实验测试结果  Table 1 Experimental test results
Figure imgf000016_0001
Figure imgf000016_0001
从表 1 的测试结果可以看出： 与现有技术相比， 本发明新型平行电极焊头 具有理想的端面电火花和接触电阻， 可以有效地延长焊头的使用寿命。  It can be seen from the test results of Table 1: Compared with the prior art, the novel parallel electrode welding head of the present invention has an ideal end face electric spark and contact resistance, which can effectively extend the service life of the welding head.
根据上述说明书的揭示和教导， 本发明所属领域的技术人员还可以对上述 实施方式进行适当的变更和修改。 因此， 本发明并不局限于上面揭示和描述的 具体实施方式， 对本发明的一些修改和变更也应当落入本发明的权利要求的保 护范围内。 此外， 尽管本说明书中使用了一些特定的术语， 但这些术语只是为 了方便说明， 并不对本发明构成任何限制。  Those skilled in the art to which the invention pertains may also make various modifications and changes to the embodiments described above. Therefore, the present invention is not limited to the specific embodiments disclosed and described, and the modifications and variations of the invention are intended to fall within the scope of the appended claims. In addition, although specific terms are used in the specification, these terms are for convenience of description and do not limit the invention.

Claims

1. 一种新型平行电极焊头， 其特征在于： 所述新型平行电极焊头包括设有 二个镶嵌电极的平行镶嵌电极焊头。 A novel parallel electrode horn, characterized in that: the novel parallel electrode horn comprises a parallel damascene electrode horn provided with two damascene electrodes.
2. 根据权利要求 1所述的新型平行电极焊头， 其特征在于： 所述镶嵌电极 设有镶嵌体和镶嵌于镶嵌体的电极。  2. The novel parallel electrode horn according to claim 1, wherein: the damascene electrode is provided with a mosaic and an electrode embedded in the mosaic.
3. 根据权利要求 2所述的新型平行电极焊头， 其特征在于： 所述镶嵌电极 的镶嵌体为铜或铜合金。  3. The novel parallel electrode horn according to claim 2, wherein: the mosaic of the damascene electrode is copper or a copper alloy.
4. 根据权利要求 2所述的新型平行电极焊头， 其特征在于： 所述二个镶嵌 电极的镶嵌体为对称设置的半圓柱形镶嵌体或半圓柱管形镶嵌体。  4. The novel parallel electrode horn according to claim 2, wherein: the mosaic of the two damascene electrodes is a symmetrically arranged semi-cylindrical mosaic or a semi-cylindrical tubular mosaic.
5. 根据权利要求 2所述的新型平行电极焊头， 其特征在于： 所述镶嵌电极 的电极为钨、 钨合金、 钼或钼合金。  5. The novel parallel electrode horn according to claim 2, wherein the electrode of the damascene electrode is tungsten, a tungsten alloy, a molybdenum or a molybdenum alloy.
6. 根据权利要求 1所述的新型平行电极焊头， 其特征在于： 所述平行镶嵌 电极焊头具有主体部、 电极尖端部和镶嵌过渡部， 主体部为镶嵌电极的镶嵌体 部分， 电极尖端部为镶嵌电极的电极延伸加工成平行电极焊头尖端的部分， 镶 嵌过渡部为镶嵌电极镶嵌到镶嵌体和向电极尖端部延伸的部分。  6. The novel parallel electrode horn according to claim 1, wherein: the parallel damascene electrode horn has a main body portion, an electrode tip portion and a mosaic transition portion, and the main body portion is a mosaic portion of the embedded electrode, and the electrode tip The portion of the electrode for the damascene electrode is formed into a portion parallel to the tip end of the electrode tip, and the inlaid transition portion is a portion in which the damascene electrode is inlaid into the mosaic body and extends toward the tip end portion of the electrode.
7. 根据权利要求 6所述的平行电极焊头， 其特征在于： 所述镶嵌过渡部紧 套有热缩套管。  7. The parallel electrode horn according to claim 6, wherein: the inlaid transition portion is tightly wrapped with a heat shrinkable sleeve.
8. 根据权利要求 7所述的新型平行电极焊头， 其特征在于： 所述热缩套管 为 PET热缩套管或 PVC热缩套管。  8. The novel parallel electrode horn according to claim 7, wherein: the heat shrinkable sleeve is a PET heat shrinkable sleeve or a PVC heat shrinkable sleeve.
9. 根据权利要求 1至 8中任一项所述的新型平行电极焊头， 其特征在于： 所述平行镶嵌电极焊头为尖端不接触的平行镶嵌电极焊头。  9. A novel parallel electrode horn according to any one of claims 1 to 8, wherein: said parallel damascene electrode horn is a parallel damascene electrode horn that is not in contact with the tip.
10. 根据权利要求 1至 8中任一项所述的新型平行电极焊头， 其特征在于： 所述平行镶嵌电极焊头为尖端连体的平行镶嵌电极焊头。  The novel parallel electrode horn according to any one of claims 1 to 8, characterized in that the parallel damascene electrode horn is a parallel-connected parallel damascene electrode horn.
11. 根据权利要求 1至 8中任一项所述的新型平行电极焊头， 其特征在于： 所述平行镶嵌电极焊头为尖端接触的平行镶嵌电极焊头。 The novel parallel electrode horn according to any one of claims 1 to 8, characterized in that: The parallel damascene electrode horn is a parallel inlaid electrode horn of tip contact.
12. 一种新型平行电极焊头的制备方法， 其特征在于， 包括以下步骤： 12. A method of preparing a novel parallel electrode horn, comprising the steps of:
1) 电极的制备： 取半圓柱形的电极材料， 在其一端以 < 7°的斜度进行尖端 加工； 在半圓柱形电极材料的平面的中央加工弧形槽， 并以弧形槽为弯曲中心 把电极材料作 < 10°的内弯、 备用； 1) Preparation of the electrode: Take a semi-cylindrical electrode material, and perform tip processing at a slope of < 7° at one end; machine the arc groove at the center of the plane of the semi-cylindrical electrode material, and bend it with an arc groove The center uses the electrode material as an inner bend of < 10°, and is reserved;
2)镶嵌体的制备： 预制半圓柱形铜管， 半圓柱形铜管内设有半圓柱形的内 孔， 内孔与半圓柱形电极材料外形匹配； 把半圓柱形铜管加工成镶嵌体， 并进 行表面处理后备用；  2) Preparation of the inlay: Prefabricated semi-cylindrical copper tube, semi-cylindrical copper tube with semi-cylindrical inner hole, inner hole and semi-cylindrical electrode material shape matching; semi-cylindrical copper tube processed into mosaic , and after surface treatment, spare;
3)镶嵌电极的制备： 取制备好的电极， 把未作尖端加工的一端镶嵌到制备 好的设有半圓柱形内孔的镶嵌体上， 且镶嵌电极的未镶嵌端长度一致；  3) Preparation of the embedded electrode: taking the prepared electrode, inserting the end without the tip processing into the prepared mosaic body having the semi-cylindrical inner hole, and the length of the un-inlaid end of the embedded electrode is uniform;
4) 平行镶嵌电极焊头的制备： 取上述制备好的镶嵌电极在其半圓柱平面上 均匀涂上热固化粘结剂， 把二个镶嵌电极固连成一体， 热固化粘结剂同时作为 二个镶嵌电极之间的绝缘隔层； 在热固化后粘结成一体的平行镶嵌电极焊头镶 嵌体的半圓柱形内孔上， 以填充剂填充。  4) Preparation of parallel damascene electrode horn: The above prepared electrode is uniformly coated with a heat curing adhesive on its semi-cylindrical plane, and the two embedded electrodes are integrally joined together, and the heat curing adhesive is simultaneously used as two An insulating spacer between the embedded electrodes; a semi-cylindrical inner hole of the parallel embedded electrode horn insert bonded to the body after heat curing, filled with a filler.
13. 根据权利要求 12所述的制备方法， 其特征在于： 步骤 1)中， 所述电极 为钨、 钨合金、 钼或钼合金。  The preparation method according to claim 12, wherein in the step 1), the electrode is tungsten, a tungsten alloy, a molybdenum or a molybdenum alloy.
14. 根据权利要求 12所述的制备方法， 其特征在于： 步骤 2)中， 所述镶嵌 体为铜或铜合金。  The preparation method according to claim 12, wherein in the step 2), the mosaic is copper or a copper alloy.
15. 根据权利要求 12所述的制备方法， 其特征在于： 步骤 2)中， 所述二个 镶嵌电极的镶嵌体为对称设置的半圓柱形镶嵌体或半圓柱管形镶嵌体。  The preparation method according to claim 12, wherein in the step 2), the mosaic of the two damascene electrodes is a symmetrically arranged semi-cylindrical mosaic or a semi-cylindrical tubular mosaic.
16. 根据权利要求 12所述的制备方法， 其特征在于： 步骤 4)中， 所述平行 镶嵌电极焊头具有主体部、 电极尖端部和镶嵌过渡部， 主体部为镶嵌电极的镶 嵌体部分， 电极尖端部为镶嵌电极的电极延伸加工成平行电极焊头尖端的部分， 镶嵌过渡部为镶嵌电极镶嵌到镶嵌体和向电极尖端部延伸的部分。  The method according to claim 12, wherein in the step 4), the parallel damascene electrode horn has a main body portion, an electrode tip portion and a mosaic transition portion, and the main body portion is a mosaic portion of the embedded electrode. The tip end portion of the electrode is a portion of the electrode of the damascene electrode which is machined into a tip end of the parallel electrode tip, and the inlaid transition portion is a portion in which the damascene electrode is inlaid into the mosaic body and extends toward the tip end portion of the electrode.
PCT/CN2013/074179 2012-04-17 2013-04-14 Novel parallel electrode welding head and preparation process thereof WO2014005458A1 (en)

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Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4305364C1 (en) * 1992-10-20 1994-04-28 Schlattl Werner Bavaria Tech Welding jaws, esp. for spot welding - includes fibre-optic sensor element for electrode force monitoring
CN2633490Y (en) * 2003-05-17 2004-08-18 吳雲龍 Electronic spot welding machine welding head
CN2818052Y (en) * 2004-09-03 2006-09-20 深圳市微迅自动化设备有限公司 Assembled spot welding electrode
CN201295820Y (en) * 2008-11-12 2009-08-26 吴云龙 Welding head of point electric welding machine
CN102950374A (en) * 2012-05-29 2013-03-06 广州微点焊设备有限公司 Tip contact type parallel electrode welding head

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4305364C1 (en) * 1992-10-20 1994-04-28 Schlattl Werner Bavaria Tech Welding jaws, esp. for spot welding - includes fibre-optic sensor element for electrode force monitoring
CN2633490Y (en) * 2003-05-17 2004-08-18 吳雲龍 Electronic spot welding machine welding head
CN2818052Y (en) * 2004-09-03 2006-09-20 深圳市微迅自动化设备有限公司 Assembled spot welding electrode
CN201295820Y (en) * 2008-11-12 2009-08-26 吴云龙 Welding head of point electric welding machine
CN102950374A (en) * 2012-05-29 2013-03-06 广州微点焊设备有限公司 Tip contact type parallel electrode welding head

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