WO2015180263A1

WO2015180263A1 - Wrapping welding micro-jointing structure and wrapping welding micro-jointing method for cobalt-based amorphous wire

Info

Publication number: WO2015180263A1
Application number: PCT/CN2014/083933
Authority: WO
Inventors: 杨仕桐; 杨诚
Original assignee: 广州微点焊设备有限公司
Priority date: 2014-05-25
Filing date: 2014-08-07
Publication date: 2015-12-03
Also published as: CN104174985B; CN204018943U; CN104174985A

Abstract

Disclosed is a wrapping welding micro-jointing structure, comprising a tiny workpiece (101) with a poor weldability, and two weldments, i.e. a base weldment (103) and a wrapping weldment (102). The tiny workpiece with a poor weldability is located between the base weldment and the wrapping weldment overlapping with each other, and the base weldment and the wrapping weldment are spot-welded using resistance-welding spot-welding equipment (100), so that the tiny workpiece with a poor weldability is tightly wrapped by the two weldments welded together so as to achieve the connection to the base weldment. Further disclosed is a wrapping welding micro-jointing method for cobalt-based amorphous wire. The above-mentioned wrapping welding micro-jointing structure realizes the reliable connection of the tiny workpiece and the base weldment, so as to effectively solve the problem of difficulty in the welding of tiny workpieces with a poor weldability.

Description

包裹焊微连接的结构及钴基非晶丝的包裹烊微连接方法技术领域 Structure of wrapped solder micro-connection and method for wrapping micro-join of cobalt-based amorphous wire

本发明属于焊接和微连接领域，更具体地说，本发明涉及包裹焊微连接的结构及钴基非晶丝的包裹焊微连接方法。 The present invention is in the field of soldering and micro-joining, and more particularly, the present invention relates to a structure of a wrap-welded micro-join and a wrap-weld micro-joining method of a cobalt-based amorphous wire.

说 Say

背景技术 Background technique

微连接是指线材的直径或带材的宽度、厚度均小于 0.10mm的微小工件与另书 Micro-joining refers to the small diameter of the wire or the width and thickness of the strip are less than 0.10mm.

一种金属材料之间的连接，各种焊接技术是微连接的主要手段之一。但是，钴丝、铂丝、锰丝、钨丝等各种可焊性差的微小工件如何与电子元器件连接仍然是电阻焊领域或微连接领域的技术难题。在目前常用的锡焊、超声波焊或激光焊等方法中，锡焊往往满足不了使用要求，而激光焊则很难在电子元器件制作中应用。 A connection between metallic materials, and various welding techniques are one of the main means of micro-joining. However, how to connect various small solderable workpieces such as cobalt wire, platinum wire, manganese wire, and tungsten wire to electronic components is still a technical problem in the field of resistance welding or micro-connection. In the current methods of soldering, ultrasonic welding or laser welding, soldering often fails to meet the requirements of use, while laser welding is difficult to apply in the manufacture of electronic components.

例如，钴基非晶丝具有巨磁电阻抗效应，而且其通过交变电流时会有巨应力电阻抗效应，因而可以被用来制成各种微力传感器或触觉传感器，在航天航空、国防和医疗领域都具有广阔的应用前景。但是，由于钴基非晶丝不仅硬而脆、可焊性极差，而且其在高温下（ 1150°C )磁性消失，因而连接时不能使用高温，同时制作传感器时又要求钴基非晶丝表面的氧化膜必须被彻底清除，使之与电子元件触点的直流电阻值趋于零，如此苛刻的条件使得钴基非晶丝在传感器电路的连接十分困难。有人提出以超声波焊接方式进行钴基非晶丝焊接，但这种工艺极其繁瑣，而且连接的可靠性和一致性往往也达不到使用要求。 For example, cobalt-based amorphous wires have a giant magnetoresistance effect, and they have a giant stress electrical impedance effect when alternating currents, and thus can be used to make various micro force sensors or tactile sensors in aerospace, defense, and The medical field has broad application prospects. However, since the cobalt-based amorphous wire is not only hard and brittle, but also has poor solderability, and its magnetic properties disappear at a high temperature (1150 ° C), high temperature cannot be used for connection, and a cobalt-based amorphous wire is required for the production of the sensor. The oxide film on the surface must be completely removed so that the DC resistance of the contact with the electronic component tends to zero. Such harsh conditions make the connection of the cobalt-based amorphous wire in the sensor circuit very difficult. It has been proposed to perform cobalt-based amorphous wire welding by ultrasonic welding, but this process is extremely cumbersome, and the reliability and consistency of the connection often fail to meet the requirements for use.

因此，各种可焊性差的微小工件如何实现与电子元器件的可靠连接，包括钴基非晶丝在传感器电路上的连接已成为特殊电子元器件制造亟需解决的技术难题。发明内容 Therefore, how to realize the reliable connection of the tiny workpieces with poor solderability to the electronic components, including the connection of the cobalt-based amorphous wires on the sensor circuit has become a technical problem to be solved in the manufacture of special electronic components. Summary of the invention

本发明的发明目的一是为可焊性差的微小工件提出包裹焊微连接；二是通过可焊性差的钴基非晶丝为实施例，提出包裹焊微连接在钴基非晶丝传感器电路的具体微连接方法。 The object of the present invention is to provide a micro-joint for a small workpiece with poor solderability; the second is to use a cobalt-based amorphous wire with poor solderability as an example, and propose a micro-joining of a cobalt-based amorphous wire sensor circuit. Specific micro-connection method.

在介绍本发明前，首先需要说明本发明中提出的包裹焊微连接的概念：包裹焊微连接是可焊性差的微小工件与焊件实现微连接的一种电阻焊新技术，该技术把可焊性差的微小工件置于彼此搭接的二个焊件之间，通过对二个焊件进行电阻焊点焊，实现可焊性差的微小工件被焊接在一起的二个焊件紧紧包裹的连接。 Before introducing the present invention, it is first necessary to explain the concept of the package soldering micro-connection proposed in the present invention: the package soldering micro-join is a new resistance welding technology for micro-joining of the micro-workpiece and the weldment with poor weldability, and the technology can The micro-workpiece with poor weldability is placed between the two weldments that are overlapped with each other. By welding the spot welds of the two weldments, the two weldments with poor weldability are tightly wrapped by the two weldments that are welded together. connection.

为了实现上述发明目的，本发明提供了一种包裹焊微连接的结构，其包括可焊性差的微小工件和分别为基底焊件、包裹焊件的二个焊件，可焊性差的微小工件位于彼此搭接的基底焊件和包裹焊件二个焊件之间，基底焊件和包裹焊件由电阻焊点焊设备点焊，可焊性差的微小工件被焊接在一起的二个焊件紧紧包裹而实现与基底焊件的连接。 In order to achieve the above object, the present invention provides a structure of a wrap-welded micro-join, which comprises a micro-workpiece with poor weldability and two weldments which are respectively a base weldment and a wrap weldment, and a small workpiece with poor weldability is located. Between the two weldments of the base weldment and the wrap weldment that are overlapped with each other, the base weldment and the wrap weldment are spot-welded by the electric resistance spot welding equipment, and the two weldments of the micro-workpiece with poor weldability are welded together. The package is tightly wrapped to achieve a connection to the base weldment.

作为本发明包裹焊微连接的结构的一种改进，所述基底焊件和包裹焊件中至少有一个焊件的表面有镀锡或喷锡的锡层，或者二个焊件的表面都有锡层。 As an improvement of the structure of the package soldering micro-join of the present invention, at least one of the base weldment and the wrap weldment has a tin-plated or tin-plated tin layer on the surface thereof, or the surfaces of the two weldments have Tin layer.

作为本发明包裹焊微连接的结构的一种改进，所述电阻焊点焊设备是以平行电极焊头对二个焊件进行点焊的。 As an improvement of the structure of the packaged solder micro-join of the present invention, the electric resistance spot welding apparatus performs spot welding of two weldments by a parallel electrode welding head.

作为本发明包裹焊微连接的结构的一种改进，所述平行电极焊头为电极尖端接触的平行电极焊头、电极尖端连体的平行电极焊头、电极尖端既不接触也不连体的平行电极焊头或平行的二个电极。 As an improvement of the structure of the package soldering micro-join of the present invention, the parallel electrode horn is a parallel electrode horn in contact with the electrode tip, a parallel electrode horn of the electrode tip connected body, and the electrode tip is neither contact nor connected. Parallel electrode horn or two parallel electrodes.

作为本发明包裹焊微连接的结构的一种改进，所述平行电极焊头的焊接端面为凹圓弧端面。 As an improvement of the structure of the packaged solder micro-join of the present invention, the welded end face of the parallel electrode horn is a concave arc end face.

作为本发明包裹焊微连接的结构的一种改进，所述可焊性差的微小工件为由难融质硬的金属及其合金制成的微小工件、表面有绝缘层的微小工件或表面作为本发明包裹焊微连接的结构的一种改进，所述难融质硬的金属及其合金制成的微小工件为钴及其合金制成的微小工件、铂及其合金制成的微小工件、锰及其合金制成的微小工件、钽及其合金制成的微小工件或钨及其合金制成的微小工件。 As an improvement of the structure of the package solder micro connection of the present invention, the minute workpiece having poor solderability is a minute workpiece made of a hard-hard metal and an alloy thereof, and a minute workpiece or surface having an insulating layer on the surface. As an improvement of the structure of the packaged solder micro-join of the present invention, the minute workpiece made of the hard-hardened metal and its alloy is a minute workpiece made of cobalt and its alloy, a minute workpiece made of platinum and its alloy. Tiny workpieces made of manganese, its alloys, tiny workpieces made of tantalum and its alloys, or tiny workpieces made of tungsten and its alloys.

作为本发明包裹焊微连接的结构的一种改进，所述微小工件为线径小于或等于 00.10mm的线材，或是厚度或宽度小于或等于 0.10mm的带材。 As an improvement of the structure of the package solder micro-join of the present invention, the minute workpiece is a wire having a wire diameter of less than or equal to 00.10 mm, or a tape having a thickness or width of less than or equal to 0.10 mm.

作为本发明包裹焊微连接的结构的一种改进，所述电阻焊点焊设备为 HPPR 显微焊接设备， HPPR显微焊接设备综合了热压焊（H )、平行间隙焊（P )、具精确电极力加压***的点焊机机头（P )和电阻焊显微焊接（R ) 的结构特征。 As an improvement of the structure of the package soldering micro-join of the present invention, the electric resistance spot welding equipment is HPPR micro-welding equipment, and the HPPR micro-welding equipment is integrated with hot-welding (H), parallel gap welding (P), Structural features of spot welder head (P) and resistance welding microweld (R) for precision electrode force pressurization systems.

与现有技术相比，本发明包裹焊微连接的结构增加了一个覆盖在可焊性差的微小工件上的包裹焊件，并通过电阻焊点焊设备将包裹焊件点焊在基底焊件，实现了微小工件与基底焊件的可靠连接，有效地解决了可焊性差的微小工件的焊接难题。 Compared with the prior art, the structure of the wrapped micro-join of the present invention adds a wrap weldment covering a small workpiece with poor weldability, and spot welds the spot weldment to the base weldment through a resistance welding spot welding device. The reliable connection between the micro workpiece and the base weldment is realized, and the welding problem of the micro workpiece with poor weldability is effectively solved.

为了实现上述发明目的，本发明还提供一种钴基非晶丝的包裹焊微连接方法，其包括以下步骤： In order to achieve the above object, the present invention also provides a wrap-welded micro-joining method of a cobalt-based amorphous wire, which comprises the following steps:

1 )提供钴基非晶丝传感器电路、钴基非晶丝、包裹焊件和电阻焊点焊设备； 1) providing a cobalt-based amorphous wire sensor circuit, a cobalt-based amorphous wire, a wrapped weldment, and a resistance welding spot welding device;

2 )把钴基非晶丝置于传感器电路的连接焊盘上，以包裹焊件覆盖钴基非晶丝，通过电阻焊点焊设备以平行电极焊头对包裹焊件进行点焊； 2) placing a cobalt-based amorphous wire on the connection pad of the sensor circuit, covering the cobalt-based amorphous wire with a wrapped weldment, and spot welding the wrapped weldment by a parallel electrode welding head through a resistance welding spot welding device;

3 )钴基非晶丝被焊接在一起的包裹焊件和连接焊盘紧紧包裹，实现了与连接焊盘的可靠连接。 3) The cobalt-based amorphous wires are tightly wrapped by the welded weldments and the connection pads that are welded together to achieve a reliable connection with the connection pads.

作为本发明钴基非晶丝的包裹焊微连接方法的一种改进，所述步骤 3 )中实现钴基非晶丝与连接焊盘的可靠微连接后，还需把包裹焊件未与连接焊盘焊接在一起的多余部分去除。 As an improvement of the wrap-welding micro-joining method of the cobalt-based amorphous wire of the present invention, after the reliable micro-connection of the cobalt-based amorphous wire and the connection pad in the step 3), the wrap weldment is not connected yet. The excess portion of the pads soldered together is removed.

作为本发明钴基非晶丝的包裹焊微连接方法的一种改进，所述电阻焊点焊设备优选为 HPPR显微焊接设备。 An improvement of the wrap-welding micro-joining method of the cobalt-based amorphous wire of the present invention, the electric resistance spot welding The device is preferably an HPPR microsurgery device.

作为本发明钴基非晶丝的包裹焊微连接方法的一种改进，所述平行电极焊头的焊接端面为凹圓弧端面。 As an improvement of the wrap-welding micro-joining method of the cobalt-based amorphous wire of the present invention, the welded end face of the parallel electrode tip is a concave arc end face.

作为本发明钴基非晶丝的包裹焊微连接方法的一种改进，所述连接焊盘为基底母材镀锡的连接焊盘。 As an improvement of the wrap-weld micro-joining method of the cobalt-based amorphous wire of the present invention, the connection pad is a connection pad for tin-plating the base material.

作为本发明钴基非晶丝的包裹焊微连接方法的一种改进，所述包裹焊件为镀锡焊件。 As an improvement of the wrap-welding micro-joining method of the cobalt-based amorphous wire of the present invention, the wrap weldment is a tin-plated weldment.

作为本发明钴基非晶丝的包裹焊微连接方法的一种改进，所述钴基非晶丝传感器电路为印刷线路板电路。 As an improvement of the wrap-welded micro-joining method of the cobalt-based amorphous wire of the present invention, the cobalt-based amorphous wire sensor circuit is a printed wiring board circuit.

本发明包裹焊微连接的结构针对钴基非晶丝硬而脆、可焊性差、表面存在氧化膜及不能使用高温的特点，通过对包裹焊件和连接焊盘镀锡，并应用 HPPR 显微焊接设备、以平行电极焊头对焊件进行单面点焊，包裹焊件在加压融化锡层的同时挤压清除钴基非晶丝表面的氧化膜，因此既保持了钴基非晶丝的磁电特性和不发生形变，又使得钴基非晶丝被固相连接的二个焊件紧紧包裹而实现可靠连接；可见，与现有技术相比，本发明为钴基非晶丝传感器电路的钴基非晶丝连接提供了一个切实可行的新连接方法。附图说明 The structure of the package-welded micro-join of the present invention is characterized in that the cobalt-based amorphous wire is hard and brittle, has poor solderability, has an oxide film on the surface, and cannot be used at a high temperature, and is tin-plated by the packaged weldment and the connection pad, and HPPR microscopy is applied. Welding equipment, single-side spot welding of the weldment by parallel electrode welding head, the welded weldment is pressed to remove the oxide film on the surface of the cobalt-based amorphous wire while pressing the molten tin layer, thereby maintaining the cobalt-based amorphous wire The magnetoelectric characteristics and the deformation do not cause the two weldments of the cobalt-based amorphous wire to be solid-phase connected to be tightly wrapped to achieve a reliable connection; it can be seen that the present invention is a cobalt-based amorphous wire as compared with the prior art. The cobalt-based amorphous wire connection of the sensor circuit provides a viable new connection method. DRAWINGS

下面结合附图和具体实施方式，对本发明包裹焊微连接及钴基非晶丝的包裹焊微连接方法及其有益效果进行详细说明。 The package solder micro connection method and the beneficial effects of the package solder micro connection and the cobalt-based amorphous wire of the present invention will be described in detail below with reference to the accompanying drawings and specific embodiments.

图 1为本发明包裹焊微连接的结构示意图。 1 is a schematic structural view of a package solder micro connection according to the present invention.

图 2为电阻焊点焊设备和具精确电极力加压***的点焊机机头的结构示意图。 Fig. 2 is a schematic view showing the structure of a spot welding machine head of a resistance welding spot welding apparatus and a precise electrode force pressing system.

图 3为钴基非晶丝传感器的印刷线路板的电路结构示意图。 3 is a schematic view showing the circuit structure of a printed wiring board of a cobalt-based amorphous wire sensor.

图 4为利用本发明钴基非晶丝的包裹焊微连接方法将钴基非晶丝连接在传感器电路上的结构示意图。具体实施方式 4 is a schematic view showing the structure of a cobalt-based amorphous wire connected to a sensor circuit by a wrap-welding micro-joining method of a cobalt-based amorphous wire 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 described in detail below with reference to the accompanying drawings and specific embodiments. The specific embodiments described in the specification are to be construed as illustrative only and not limiting.

请参阅图 1和图 2 (图 1的包裹焊微连接的结构示意图为图 2中 A处的放大图 ), 被焊接工件 224、电阻焊点焊设备 100通过输出电缆 214和焊头夹 212 与平行电极焊头 223连接；被焊接工件 224包括基底焊件 103和包裹焊件 102 二个焊件，二个焊件 102和 103装配成搭接接头，把可焊性差的微小工件 101 置于二个焊件 102、 103中间，电阻焊点焊设备 100以平行电极焊头 223对二个焊件 102和 103进行点焊，实现可焊性差的微小工件 101被焊接在一起的二个焊件 102和 103紧紧包裹的可靠连接。 Referring to FIG. 1 and FIG. 2 (the schematic diagram of the package soldering micro-connection of FIG. 1 is an enlarged view at A in FIG. 2), the soldered workpiece 224 and the resistance welding spot welding apparatus 100 pass through the output cable 214 and the horn clip 212. The parallel electrode horns 223 are connected; the workpiece 224 to be welded includes two weldments of the base weldment 103 and the wrap weldment 102, and the two weldments 102 and 103 are assembled as lap joints, and the micro-workpiece 101 with poor weldability is placed in the second In the middle of the weldments 102, 103, the electric resistance spot welding apparatus 100 spot welds the two weldments 102 and 103 by the parallel electrode horn 223, so that the two weldments 102 in which the micro-workpieces 101 with poor weldability are welded together are realized. Reliable connection to the tight package of 103.

所述微小工件指线径小于或等于 00.10mm线材，或是厚度或宽度小于或等于 0.10mm的带材，微小工件 101—般为可焊性差的工件。 The minute workpiece refers to a wire having a wire diameter of less than or equal to 00.10 mm, or a tape having a thickness or width less than or equal to 0.10 mm, and the minute workpiece 101 is generally a workpiece having poor weldability.

由于微小工件 101 的可焊性差且工件细小，为了保证电阻焊点焊设备加压点焊时二个焊件 102、 103能良好接触导电而产生电阻热，所提供的二个焊件 102、 103 中至少有一个焊件的表面需要有软金属锡层 104, 如在焊件 102、 103表面喷锡或镀锡；当然，也可以是二个焊件 102、 103的表面都有喷锡或镀锡。由于锡比较柔软、具有浸润性好、导电性好、熔点低等特点，因此加压电阻焊的电流不需要产生太高的电阻热，锡层 104即能把可焊性差的微小工件 101包裹住，使二个焊件 102、 103进一步产生固相连接或融接，从而实现微小工件 101与焊件 102、 103的可靠连接。 Since the solderability of the minute workpiece 101 is poor and the workpiece is small, in order to ensure that the two weldments 102, 103 can be in good contact with the conductive heat when the spot welding of the resistance spot welding equipment is generated, the two weldments 102, 103 are provided. The surface of at least one of the weldments needs to have a soft metallic tin layer 104, such as tin or tin plating on the surfaces of the weldments 102, 103; of course, the surfaces of the two weldments 102, 103 may be sprayed or plated. tin. Since tin is relatively soft, has good wettability, good electrical conductivity, and low melting point, the current of the pressure resistance welding does not need to generate too high resistance heat, and the tin layer 104 can wrap the small workpiece 101 with poor solderability. The two weldments 102, 103 are further subjected to solid phase connection or fusion, thereby achieving reliable connection of the micro workpiece 101 and the weldments 102, 103.

另外，由于锡层 104的熔点低且具有浸润性，在电阻焊点焊设备加压进行单面点焊时，焊件 102、 103表面的锡层可以对微小工件 101表面的氧化膜或者绝缘漆进行有效的挤压和清除，所以本发明包裹焊微连接结构不仅能够适用于各种难融质硬的金属及其合金制成的可焊性差的微小工件，包括但不限于钴及其合金制成的微小工件、铂及其合金制成的微小工件、锰及其合金制成的微小工件、钽及其合金制成的微小工件、钨及其合金制成的微小工件，而且还可应用于各种表面有绝缘层或绝缘漆的微小工件，如有氧化膜的钴基非晶丝或锰丝的漆包线、铜丝的漆包线等。 In addition, since the tin layer 104 has a low melting point and is wettable, the tin layer on the surface of the weldments 102, 103 can be an oxide film or an insulating varnish on the surface of the minute workpiece 101 when the electric resistance spot welding apparatus is pressurized for single-sided spot welding. Effective extrusion and cleaning, the wrapped micro-joined structure of the present invention can be applied not only to various hard-to-hard metals and their alloys, but also to poorly solderable micro-workpieces, including but not limited to cobalt and Tiny workpieces made of alloys, tiny workpieces made of platinum and its alloys, tiny workpieces made of manganese and its alloys, tiny workpieces made of tantalum and its alloys, tiny workpieces made of tungsten and its alloys, but also It can be applied to various small workpieces with insulating layer or insulating varnish on the surface, such as cobalt-based amorphous wire with oxide film or enameled wire of manganese wire, enameled wire of copper wire, etc.

有必要对本实施例提及的由电阻焊点焊设备 100以平行电极焊头 223对二个焊件进行点焊作进一步说明：电阻焊对搭接在一起的二个焊件进行点焊的方式，包括把二个电极做成上下电极置于二个焊件的上下侧面的双面点焊方式和把二个电极做成平行电极置于二个焊件的同一侧面的单面点焊方式，在广义上，上述二种点焊方式都可以在包裹焊微连接上应用，但在实际中，包裹焊微连接往往没有下电极的工作位置，所以本发明提出的包裹焊微连接主要应用以平行电极的单面点焊方式，而单面点焊除了可以应用平行电极的二个电极外，还主要应用本发明提出的各种平行电极焊头。 It is necessary to further describe the spot welding of the two weldments by the parallel electrode horn 223 by the electric resistance spot welding apparatus 100 mentioned in the embodiment: the way of spot welding the two weldments lapped together by electric resistance welding , comprising a double-sided spot welding method in which two electrodes are formed as upper and lower electrodes on the upper and lower sides of the two weldments, and a single-sided spot welding method in which two electrodes are formed as parallel electrodes on the same side of the two weldments, In a broad sense, the above two spot welding methods can be applied to the package solder micro connection, but in practice, the package solder micro connection often has no working position of the lower electrode, so the package solder micro connection proposed by the present invention is mainly applied in parallel. The single-sided spot welding method of the electrode, and the single-sided spot welding is mainly applied to the various parallel electrode welding heads proposed by the present invention, in addition to the two electrodes to which parallel electrodes can be applied.

平行电极焊头 223是电阻焊焊接设备二个焊件进行单面点焊的主要工具，有必要对其作进一步说明：平行电极焊头 223 可以是电极尖端连体的平行电极焊头或尖端接触的平行电极焊头、也可以是电极尖端既不连体也不接触的平行电极焊头，还可以是平行的二个电极。当电阻焊点焊设备 100对平行电极 223 馈电时，即可使二个焊件 102、 103产生电阻热，二个焊件 102、 103被焊接在一起的同时紧紧包裹可焊性差的微小工件 101 , 实现可靠连接。 Parallel electrode horn 223 is the main tool for single-sided spot welding of two weldments of electric resistance welding equipment. It is necessary to further explain it: Parallel electrode horn 223 can be parallel electrode horn or tip contact of electrode tip joint The parallel electrode horn may also be a parallel electrode horn in which the electrode tip is neither connected nor in contact, or may be two electrodes in parallel. When the resistance welding spot welding apparatus 100 feeds the parallel electrode 223, the two weldments 102, 103 can generate resistance heat, and the two weldments 102, 103 are welded together and tightly wrapped with a small weldability. The workpiece 101 achieves a reliable connection.

图 1 显示的平行电极焊头为焊接端面为凹圓弧端面的平行电极焊头，其在包裹焊微连接中的作用为：当凹圓弧端面的平行电极焊头 223对覆盖在可焊性差的微小工件 101上的包裹焊件 102进行点焊时，一方面，凹圓弧外侧的两端能够保证对二个焊件 102、 103进行可靠地焊接，另一方面，处于凹圓弧端面最低点的可焊性差的微小工件 101 也能够保证被焊接在一起的二个焊件紧紧包裹而实现可靠连接。 The parallel electrode horn shown in Fig. 1 is a parallel electrode horn whose welding end face is a concave arc end face, and its role in the wrap welding micro-join is as follows: When the parallel electrode horn 223 of the concave arc end face is covered, the solderability is poor. When the wrap weldment 102 on the minute workpiece 101 is spot-welded, on the one hand, the two ends of the concave arc outer side can ensure reliable welding of the two weldments 102, 103, and on the other hand, the concave arc end face is the lowest. The minute workpiece 101 with poor solderability of the dots can also ensure that the two soldering members that are welded together are tightly wrapped to achieve a reliable connection.

为了保证可焊性差的微小工件实施包裹焊微连接具可靠性、一致性和实用性，本发明提出了包裹焊微连接专用的 HPPR显微焊接设备，由于 HPPR显微浮接设备综合了 Heat and Pressure Welding (热压浮 H )、 Parallel electrode with single side welding (平行间隙浮 P )、 Precise Force System in header (奇确电极力力口压***的点焊机机头 P)、 Resistance of micro welding(电阻焊显微焊接 R)的结构特征，因此也具有这四种结构的优点，为了简洁起见，本发明称之为 HPPR显微焊接设备。根据其结构特征，从焊接领域的角度， HPPR显微焊接设备的概念可表达为： HPPR显微焊接设备包括热压焊（H )、平行间隙焊（P )、具精确电极力加压***的点焊机机头（P )和电阻焊显微焊接（R ) 四部分。 HPPR显微焊接设备能够实现输出脉冲精度士 0.01V, 输出脉宽士 0.1ms, 焊接能量士 0.5焦耳，电极力士 0.5N, 可以设想，传统的电阻焊点焊设备其输出能量精度一般在士 10J, 电极力精度一般在士 10N, 所以传统的电阻焊点焊设备往往无法胜任对线径只有 00.10mm以下可焊性差的微小工件的包裹焊微连接。 To ensure the reliability, consistency and practicality of the packaged micro-joints for the micro-workpieces with poor solderability The present invention proposes a HPPR micro-welding device dedicated to the package welding micro-joining, since the HPPR micro-floating device integrates Heat and Pressure Welding (H) and Parallel electrode with single side welding (parallel gap floating P) , the structural features of the Precise Force System in header, the resistance of micro welding, and therefore the advantages of these four structures. For the sake of brevity, the present invention is referred to as an HPPR microsurgery device. According to its structural characteristics, from the perspective of welding, the concept of HPPR micro-welding equipment can be expressed as: HPPR micro-welding equipment including thermo-compression welding (H), parallel gap welding (P), with precise electrode force pressing system Spot welder head (P) and resistance welding micro-welding (R) four parts. HPPR micro-welding equipment can achieve output pulse precision of 0.01V, output pulse width of 0.1ms, welding energy of 0.5 joules, electrode force of 0.5N, it is conceivable that the traditional resistance welding spot welding equipment its output energy accuracy is generally in Shi 10J The precision of the electrode force is generally 10N, so the conventional resistance welding spot welding equipment is often unable to perform the micro-joining of the micro-workpiece with a small weldability of less than 00.10 mm.

有必要进一步说明 HPPR显微焊接设备的结构特征：在具精确电极加压系统的点焊机机头上安装有焊头夹，平行电极焊头安装在焊头夹上，电阻焊显微焊接电源通过输出电缆与焊头夹连接而为平行电极焊头提供焊接电流。当导通焊接电流时，电流首先通过平行电极焊头的尖端使之出现高温或电火花，随之电流通过焊件实现对焊件的热压焊和电阻焊。需要强调， HPPR显微焊接设备是对焊接能量调控精度和焊接力调控精度都比较高的电阻焊点焊设备，换句话说 HPPR显微焊接设备也属于电阻焊点焊设备。 It is necessary to further explain the structural characteristics of the HPPR micro-welding equipment: a welding head clamp is mounted on the spot welding machine head with a precise electrode pressurizing system, and the parallel electrode welding head is mounted on the welding head clamp, and the electric resistance welding micro-welding power supply A welding current is supplied to the parallel electrode horn by connecting the output cable to the horn clip. When the welding current is turned on, the current first passes through the tip of the parallel electrode horn to cause high temperature or electric spark, and the current is then subjected to hot-welding and resistance welding of the weldment through the weldment. It should be emphasized that the HPPR micro-welding equipment is a resistance welding spot welding equipment with high welding energy regulation precision and welding force control precision. In other words, HPPR micro-welding equipment is also a resistance welding spot welding equipment.

由于电阻焊显微焊接电源已在专利申请号为 ZL200810005894.8的精密电阻焊点焊设备申请中公开，平行电极焊头也已在申请号为 ZL201310122137.X的尖端接触式平行电极焊头申请中公开，因此本发明主要介绍具精确电极力加压系统的点焊机机头。 Since the electric resistance welding micro-welding power source has been disclosed in the application for the precision resistance welding spot welding equipment of the patent application number ZL200810005894.8, the parallel electrode welding head has also been applied in the tip contact parallel electrode welding head application number ZL201310122137.X. Disclosed, therefore, the present invention is primarily directed to a spot welder head having a precision electrode force pressurization system.

为此，首先需要了解本发明提出的精确电极力加压***的含义：电极力加压***是指焊接时段提供电极力的相关结构，精确电极力加压***则是提供的电极力能满足电阻焊显微焊接要求的相关结构，也就是精确电极力加压***必须满足下述三项要求：一是预设定的电极力必须精确一致；二是在整个焊接时段电极力都在预设定的范围内维持和保持相对恒定；三是在焊接完成的同时必须要掣断过大的焊接力对焊件的加压。因而，精确电极力加压***相应需要通过电极力预设定装置、焊接作用力传导装置和焊接掣断装置三部分的共同作用。 To this end, it is first necessary to understand the meaning of the precise electrode force pressurization system proposed by the present invention: The electrode force pressurization system refers to the relevant structure for providing the electrode force during the welding period, and the precise electrode force pressurization system is provided. The electrode force can meet the relevant structure of resistance welding micro-welding requirements, that is, the precise electrode force pressing system must meet the following three requirements: First, the preset electrode force must be accurate and consistent; Second, the electrode force during the entire welding period Both are maintained and maintained relatively constant within a predetermined range; the third is that the welding force must be cut off to over pressurize the weldment while the welding is completed. Therefore, the precise electrode force pressing system correspondingly needs to cooperate by the three parts of the electrode force presetting device, the welding force transmitting device and the welding breaking device.

具体地，本发明提出的具精确电极力加压***的点焊机机头包括机头框架、安装在机头框架上的精确电极力加压***，精确电极力加压***包括焊接作用力传导装置、精确电极力预设定装置和焊接力掣断装置；通过精确电极力加压 ***实现在整个焊接时段电极力都在预设定的范围内维持并保持相对恒定；焊接作用力传导装置将焊接动力通过其力矩传导，把焊接力转化为电极力传导至焊头夹；精确电极力预设定装置提供可进行预设定量化电极力的设置，在其检测到电极力达到预设定的量值时，驱动点焊电源提供焊接电流；焊接力掣断装置在电极力达到预设定的量值时，阻断焊接力的力矩传导。 Specifically, the spot welder head with the precise electrode force pressurization system of the present invention comprises a head frame, a precise electrode force pressurization system mounted on the head frame, and a precise electrode force pressurization system including a welding force transmission The device, the precise electrode force presetting device and the welding force breaking device; the electrode force is maintained and kept relatively constant throughout the welding period by the precise electrode force pressing system; the welding force transmitting device will The welding power is transmitted through its torque, and the welding force is converted into the electrode force to be transmitted to the welding head clamp; the precise electrode force presetting device provides a setting for pre-setting the quantized electrode force, and the electrode force is detected to reach a preset value. When the value is measured, the spot welding power source is driven to provide a welding current; the welding force breaking device blocks the torque transmission of the welding force when the electrode force reaches a predetermined amount.

请参阅附图 2,电阻焊点焊设备 100通过输出电缆 214和焊头夹 212与平行电极 223相连接，被焊接工件 224放置在工件台 225上， A部分的放大图已在图 1 中作过专门描述，以下仅结合附图 2介绍精确电极力加压***中的焊接作用力传导装置和精确电极力预设定装置二部分的结构。 Referring to FIG. 2, the resistance welding spot welding apparatus 100 is connected to the parallel electrode 223 through the output cable 214 and the horn clip 212, and the welded workpiece 224 is placed on the workpiece stage 225. The enlarged view of the A portion is shown in FIG. Specifically, the structure of the welding force transmission device and the precise electrode force presetting device in the precise electrode force pressing system will be described below with reference to FIG.

点焊机机头的机头框架具前后左右四个立面，机头框架前立面为 201 ,在明确了机头才]|架的前立面 201 后，同时也明确了机头 411架的后立面和左右立面。在靠近机头框架后立面固定有立柱 202 ,立柱 202的下段则固定安装在工作台上。在机头框架上设有与立柱 202以平行方向安装的小轴 203、中轴 204以及滑轴 205; 还有与立柱 202以垂直方向安装的中轴夹 206和滑轴夹 207。中轴夹 206 的一端与中轴 204紧固连接，中轴夹 206的另一端套设在焊接动力传导拉杆 222 (或拉索）上；复位弹簧 221—端连接中轴夹 206, 另一端连接套在拉杆 222上的支撑件。滑轴夹 207的一端与滑轴 205紧固连接，中轴 204的上、下两段分别设有压缩弹簧 208、 209, 滑轴夹 207被中轴 204贯穿设置，在滑轴夹 207被中轴 204贯穿的对应位置处，滑轴夹 207的上下端面分别 ·ί氏触或连接所述压缩弹簧 208、 209。小轴 203以可滑动连接的方式贯穿中轴夹 206和滑轴夹 207; 此外，小轴 203也分为设有压缩弹簧 210、 211的上、下两段，滑轴夹 207被小轴 203贯穿的对应位置处，其上下端面分别 ·ί氏触或连接所述压缩弹簧 210、 211。滑轴 205的下端用以与焊头夹 212固定连接，平行电极焊头 223安装在焊头夹 212上。 The head frame of the spot welder head has four front and rear façades, and the front façade of the head frame is 201. After the front façade 201 of the frame is clarified, the front 411 of the frame is also defined. The rear facade and the left and right facades. A column 202 is fixed to the façade near the head frame, and the lower portion of the column 202 is fixedly mounted on the table. A small shaft 203, a middle shaft 204, and a slide shaft 205 which are mounted in parallel with the column 202 are provided on the head frame; and a center shaft clamp 206 and a slide shaft clamp 207 which are mounted in a vertical direction with the column 202. One end of the middle axle clamp 206 is fastened to the middle axle 204, and the other end of the middle axle clamp 206 is sleeved on the welding power transmission rod 222 (or cable); the return spring 221 is connected to the middle axle clamp 206, and the other end is connected. A support member that fits over the pull rod 222. One end of the sliding shaft clamp 207 is fastened to the sliding shaft 205, and the upper and lower sections of the central shaft 204 are divided into two sections. There are provided compression springs 208, 209, and the sliding shaft clamp 207 is disposed through the central shaft 204. At the corresponding position where the sliding shaft clamp 207 is penetrated by the central shaft 204, the upper and lower end faces of the sliding shaft clamp 207 are respectively connected or connected. The compression springs 208, 209 are described. The small shaft 203 penetrates the middle shaft clamp 206 and the slide shaft clamp 207 in a slidable manner; in addition, the small shaft 203 is also divided into upper and lower sections provided with compression springs 210, 211, and the slide shaft clamp 207 is divided by the small shaft 203. At the corresponding positions penetrating, the upper and lower end faces respectively contact or connect the compression springs 210, 211. The lower end of the slide shaft 205 is fixedly coupled to the horn clip 212, and the parallel electrode horn 223 is mounted on the horn clip 212.

上述点焊机机头中，实现了既定安装结构的小轴 203、中轴 204、中轴夹 206、滑轴夹 207组成了焊接力传导结构；实现了既定安装结构的滑轴 205和焊头夹 212组成了电极力传导结构；安装在中轴 204和小轴 203上的第一组压缩弹簧 208、 209和第二组压缩弹簧 210、 211则组成了焊接力緩冲结构。 In the above-mentioned spot welding machine head, the small shaft 203, the middle shaft 204, the middle shaft clamp 206, and the sliding shaft clamp 207 which realize the predetermined installation structure constitute a welding force transmission structure; the sliding shaft 205 and the welding head which realize the predetermined installation structure are realized. The clip 212 constitutes an electrode force transmitting structure; the first set of compression springs 208, 209 and the second set of compression springs 210, 211 mounted on the center shaft 204 and the small shaft 203 constitute a welding force buffering structure.

就上述各部件所实现的功能而论，所述小轴 203、中轴 204为焊接力的导向轴，中轴夹 206和滑轴夹 207为焊接力的传导体，小轴 203、滑轴 205是电极力的导向轴，焊头夹 212为电极力的传导体。上述焊接力传导结构、电极力传导结构和焊接力緩冲结构三部分的构件及其有机构造，共同构成了本发明所述的焊接作用力传导装置。 With respect to the functions realized by the above components, the small shaft 203 and the middle shaft 204 are the guiding shafts for the welding force, the middle shaft clamp 206 and the sliding shaft clamp 207 are the conductors of the welding force, the small shaft 203 and the sliding shaft 205. It is the guide shaft of the electrode force, and the horn clip 212 is a conductor of the electrode force. The above-described welding force conducting structure, electrode force conducting structure and welding force buffering structure and their organic structures together constitute the welding force transmitting device of the present invention.

从本实施例的结构可以知晓，焊接力緩冲结构实质是指安装在焊接力传导结构和电极力传导结构之间的压缩弹簧，其作用包括把焊接力柔和地传递到电极力传导结构及当焊接力被掣断时，焊接力仍能在压缩弹簧的作用下随动维持，也就是说，通过在上述力矩传递路径中设置用于緩冲力矩传递的结构，使力的传递更为柔和，即构成本发明的焊接力緩冲结构。所以，基于本实施例相同的原理，本领域技术人员应当知晓，焊接力緩冲结构的具体实现方式可以有多种多样，例如可以改进本实施例，使焊接力緩冲结构只保留其中一组弹簧组合，或者在焊接力传导结构与电极力传导结构之间只设置一根压缩弹簧（如设置在小轴 203上部、中轴夹 206与中部滑轴夹 207之间的压缩弹簧 210, 省略其它三个压缩弹簧 211、 208、 209 ), 如此种种，均属于本发明提出的焊接力緩冲结构，落入本发明的保护范畴。 It can be known from the structure of the embodiment that the welding force buffering structure substantially refers to a compression spring installed between the welding force conducting structure and the electrode force conducting structure, and the function thereof includes gently transmitting the welding force to the electrode force conducting structure and when When the welding force is broken, the welding force can still be maintained by the action of the compression spring, that is, by providing a structure for buffering torque transmission in the above torque transmission path, the force transmission is softened. That is, the welding force buffer structure of the present invention is constructed. Therefore, based on the same principle of the embodiment, those skilled in the art should know that the specific implementation manner of the welding force buffer structure can be various, for example, the embodiment can be improved, and only one of the welding force buffer structures is retained. a spring combination, or only a compression spring between the welding force conducting structure and the electrode force conducting structure (such as a compression spring 210 disposed between the upper portion of the small shaft 203, the middle shaft clamp 206 and the middle sliding shaft clamp 207, omitting the other three The compression springs 211, 208, 209), as described above, belong to the welding force buffering structure proposed by the present invention and fall within the protection scope of the present invention.

在图 2的结构中，当压缩弹簧 208、 209被内置于中轴 204时，能起到如前所述的緩冲作用，可以视为焊接力緩冲结构的一部分，但是，从另一个功能视角来观察，通过调节弹簧 208、 209的压缩位置，则其进一步起到了精确电极力预设定以及追随结构的作用。本发明在机头框架 201 的前端安装有电极力电路 216, 该精确电极力预设定结构和电极力电路 216构成了本发明的精确电极力预设定装置。在精确电极力预设定结构中，上下两段压缩弹簧 208、 209在出厂时，其弹性系数既定，其回释力对外力的反作用也是既定的。 In the structure of Fig. 2, when the compression springs 208, 209 are built in the center shaft 204, they can serve as a buffering function as described above, and can be regarded as a part of the welding force buffer structure, but from another function Viewed from the viewing angle, by adjusting the compression position of the springs 208, 209, it further functions as a precise electrode force presetting and following structure. The present invention is provided with an electrode force circuit 216 at the front end of the head frame 201, and the precise electrode force presetting structure and the electrode force circuit 216 constitute the precise electrode force presetting device of the present invention. In the precise electrode force pre-setting structure, the upper and lower compression springs 208, 209 are fixed at the factory, and the reaction force of the external force is also established.

如前所述，精确电极力预设定装置包括精确电极力预设定结构和电极力电路 216, 精确电极力预设定结构除了采用如图 2所示的追随结构实现之外，还可以采用压力传感器结构实现，电极力电路则与安装有点焊电源和点焊电源调控装置的主机电性连接。 As described above, the precise electrode force presetting device includes a precise electrode force presetting structure and an electrode force circuit 216. The precise electrode force presetting structure can be implemented in addition to the following structure as shown in FIG. The pressure sensor structure is realized, and the electrode force circuit is electrically connected to a host on which a welding power source and a spot welding power source control device are installed.

需要加以说明的是，所述的压缩弹簧 208、 209在上述实施例中起到非常巧妙的作用，其既可起到焊接力緩冲和随动维持结构的作用，还可起到精确电极力预设定结构的作用。并且依据前述关于焊接力緩冲结构和精确电极力预设定结构所揭示的多种变化实例来分析，压缩弹簧 208、 209对该二个结构而言均非必须的实现方式，可在某些实施例中被替代；然而，采用压缩弹簧 208、 209则可同时实现该二个结构，明显是更优的方案。本领域技术人员对此应有明确的认知。 It should be noted that the compression springs 208 and 209 play a very ingenious role in the above embodiments, and can function as a welding force buffering and a follow-up maintaining structure, and can also serve as an accurate electrode force. The role of the pre-set structure. And according to the foregoing various examples of variations disclosed in the welding force buffer structure and the precise electrode force presetting structure, the compression springs 208, 209 are not necessary implementations for the two structures, and may be It is replaced in the embodiment; however, the use of compression springs 208, 209 can achieve both structures at the same time, which is obviously a better solution. Those skilled in the art should have a clear understanding of this.

焊接力掣断装置包括电磁铁结构和用于驱动电磁铁结构工作的电磁铁电路，电磁铁结构包括电磁铁和吸附铁块，电磁铁和吸附铁块分别安装在点焊机机头的固定构件和活动构件上，电磁铁电路与精确电极力预设定装置的电极力电路电性连接。 The welding force breaking device comprises an electromagnet structure and an electromagnet circuit for driving the electromagnet structure, the electromagnet structure comprises an electromagnet and an adsorption iron block, and the electromagnet and the adsorption iron block are respectively mounted on the fixing member of the spot welding machine head And on the movable member, the electromagnet circuit is electrically connected to the electrode force circuit of the precise electrode force presetting device.

电磁铁电路导通时，驱动电磁铁结构中的电磁铁对所述吸附铁块进行吸附。需要说明的是，为了实现工作循环，电磁铁结构必须具有复位构件，复位构件是指当电磁铁电路断开时，被电磁铁吸附的吸附铁块回复到原来位置的构件。有关复位构件可以多种，采用诸如拉伸弹簧、极性与电磁铁相反的永磁铁等可以协助被吸附的活动构件复位的公知构造即可，因为本领域技术人员所应知晓，恕不赘述。 When the electromagnet circuit is turned on, the electromagnet in the electromagnet structure is driven to adsorb the adsorbed iron block. It should be noted that in order to realize the duty cycle, the electromagnet structure must have a reset member, and the reset member refers to a member that is returned to the original position by the adsorbed iron block adsorbed by the electromagnet when the electromagnet circuit is disconnected. There may be various kinds of the reset member, and a known structure such as a tension spring, a permanent magnet having a polarity opposite to that of the electromagnet, etc., which can assist the reset of the adsorbed movable member, may be used, as those skilled in the art will not know.

下面再结合图 2介绍精确电极力加压***中的焊接力掣断装置的结构。图 2是电磁铁、吸附铁块分别安装在点焊机机头的固定构件和活动构件上的结构示意图。如图 2中所示，在机头框架 201的上边框安装有电磁铁 217 , 邻近电磁铁的吸附面上安装有吸附铁块 218,在中轴 204和滑轴 205的上端安装有复位构件 219, 吸附铁块 218与复位构件 219借助轴销 220进行连接。 Next, the structure of the welding force breaking device in the precise electrode force pressing system will be described with reference to FIG. Fig. 2 is a structural schematic view showing that an electromagnet and an absorbing iron block are respectively mounted on a fixing member and a movable member of a spot welding machine head. As shown in Fig. 2, an electromagnet 217 is mounted on the upper frame of the head frame 201, an adsorption iron block 218 is attached to the adsorption surface adjacent to the electromagnet, and a reset member 219 is attached to the upper ends of the center shaft 204 and the slide shaft 205. The absorbing iron block 218 and the reset member 219 are connected by means of the pivot pin 220.

由于中轴 204属于活动构件，中轴 204在运动过程中，一旦其上的吸附铁块 218被电磁铁 217所吸附，中轴 204便在焊接力传递过程中发挥阻碍作用，从而起到掣断效果。而一旦电磁铁电路断开，使电磁铁 217 失磁，则中轴 204 上的复位构件 219便复位而迫使中轴 204所受外力 4敦除而复位，恢复中轴 204 的正常受力环境。 Since the central shaft 204 belongs to the movable member, the middle shaft 204 is adsorbed by the electromagnet 217 during the movement of the central shaft 204, and the central shaft 204 acts as a hindrance during the transmission of the welding force, thereby causing the cutting. effect. Once the electromagnet circuit is disconnected and the electromagnet 217 is demagnetized, the reset member 219 on the center shaft 204 is reset to force the external shaft 204 to be externally displaced and reset, thereby restoring the normal stress environment of the center shaft 204.

如前所述，本发明把点焊机机头的结构划分为活动构件和固定构件，并不局限于如前对机头框架的上边框和对中轴 204这二个部件的理解，实际上，本领域技术人员可以由本发明的描述知晓，本发明所称的活动构件包括中轴夹 206、中轴 204、小轴 203、滑轴夹 207、滑轴 205等活动件；固定构件包括机头框架等相对与上述活动构件固定不动的构件。任何固定构件或活动构件，均可 As described above, the present invention divides the structure of the spot welder head into a movable member and a fixed member, and is not limited to the understanding of the two parts of the upper frame and the centering shaft 204 of the head frame as in the prior art. A person skilled in the art can be known by the description of the present invention, and the movable member referred to in the present invention includes a movable member such as a center shaft clamp 206, a middle shaft 204, a small shaft 203, a slide shaft clamp 207, a slide shaft 205, and the like; A frame or the like is fixed relative to the movable member. Any fixed or moving member,

218以及复位元件相配合，而不受现有结构的限制。 The 218 and the reset element cooperate without being limited by the existing structure.

综上所述，有必要对本发明的精确电极力加压***下述三点结构特征进行吉 In summary, it is necessary to carry out the following three-point structural features of the precise electrode force pressurization system of the present invention.

( 1 )机电一体化的结构特点：根据精确电极力加压***的总体设计，本发明所述的精确电极力加压***包括了焊接力传导结构、焊接力緩冲结构、电极力传导结构、电磁铁结构、电磁铁电路，精确电极力预设定结构和电极力电路组成的机电一体化的加压***，在整个精确电极力加压***中，电极力电路起到很重要的控制作用；当要对工件进行焊接时，首先在精确电极力预设定装置上，通过电极力电路，以量化的方式输入欲预设定的电极力，然后，作业时，焊接动力源向焊接力传导体提供焊接力，当电极力电路检测到焊接力达到预设定值时，电极力电路一方面向焊接电源发出指令，导通点焊电源，另一方面还向电磁铁电路发出指令使电磁铁导通以吸附所述吸附铁块，电磁铁结构即对焊接力传导结构进行掣动，阻止力矩传导以阻止过大的焊接力作用于电极； (1) Structural features of mechatronics: According to the overall design of the precision electrode force pressurization system, this issue The precise electrode force pressing system described in the drawings includes a welding force transmission structure, a welding force buffer structure, an electrode force transmission structure, an electromagnet structure, an electromagnet circuit, a precise electrode force presetting structure, and an electromechanical circuit composed of an electromechanical force circuit. Integrated pressurization system, the electrode force circuit plays an important role in the whole precision electrode force pressurization system; when welding the workpiece, firstly on the precise electrode force presetting device, through the electrode force The circuit inputs the electrode force to be preset in a quantitative manner, and then, during operation, the welding power source supplies a welding force to the welding force conductor, and when the electrode force circuit detects that the welding force reaches a preset value, the electrode force circuit On one hand, a command is issued to the welding power source to turn on the spot welding power source, and on the other hand, a command is issued to the electromagnet circuit to conduct the electromagnet to adsorb the adsorption iron block, and the electromagnet structure is to sway the welding force transmission structure. Preventing torque conduction to prevent excessive welding force from acting on the electrode;

( 2 ) 焊接力掣断装置的结构特征：电阻焊显微焊接的焊件一般小于 0.10mm, 一方面本发明采用不受焊件高度差影响的焊接力掣动装置，现有技术的掣动都是采用行程限位的结构，比如现有技术掣动精度最好的侍服电机，其对行程限位精度小于 0.01mm, 但往往也不能满足电阻焊显微焊接的要求，原因在于被焊工件的高度差达 0.03mm的情况十分普遍，伺服电机以行程限位对工件的误差毫无办法，本发明以点焊电源的触发信号同时触发电磁铁的工作讯号，因此本发明的掣动就完全不受焊件高度差的影响；当点焊操作完成之后，电极力电路断开点焊电源所提供的点焊电流，同时指令焊接力掣断装置恢复原状，即完成一次点焊过程； (2) Structural features of the welding force breaking device: The welding consumables for electric resistance welding are generally less than 0.10 mm. On the one hand, the present invention employs a welding force swaying device that is not affected by the height difference of the weldment, and the prior art is swayed. They are all designed with stroke limit. For example, the servo motor with the best precision in the prior art has a stroke limit accuracy of less than 0.01mm, but it often cannot meet the requirements of resistance welding micro-welding because of the welder. The height difference of the pieces is 0.03 mm, and the servo motor has no problem with the error of the workpiece by the stroke limit. The invention triggers the working signal of the electromagnet at the same time by the trigger signal of the spot welding power source, so the tilting of the present invention Completely unaffected by the height difference of the weldment; after the spot welding operation is completed, the electrode force circuit disconnects the spot welding current provided by the spot welding power source, and at the same time instructs the welding force breaking device to return to the original state, that is, completes a spot welding process;

( 3 )电极力緩冲结构的结构特征：有关焊接力緩冲结构的作用原理看似简单，但也是精确电极力加压***的重要构成；电阻焊显微焊接的整个点焊时段，都须要电极力在预设定范围内维持相对恒定，对精确电极力预设定装置提出士 0.1N的精度要求没有太大的难度，但是，由于电阻焊点焊过程处于完全封闭无法观测状态，点焊过程包括了电、热、力、多变量的耦合作用，这些耦合作用又是高度非线性，焊件处于先受热膨胀后又被软化压扁的极短的形核过程，所以，要求精确电极力加压***在整个焊接时段都将电极力保持在士 0.5N的精度范围反而有很大的难度；可以设想：如果没有焊接力緩冲结构的随动维持，就会出现当焊件膨胀时电极力随之增加，当焊件被压扁时电极力随之减少，当焊接力被掣动时电极力随之消失；本发明机电一体化的精确电极力加压***正是通过精确电极力预设定装置结合焊接力掣动装置和焊接力緩冲结构的协同作用、相互制约，实现在整个点焊时段，电极力都在预设定范围维持并保持相对恒定。 (3) Structural features of the electrode force buffer structure: The principle of the welding force buffer structure seems to be simple, but it is also an important component of the precision electrode force pressurization system; The electrode force is relatively constant within the preset range. It is not too difficult to accurately measure the precision of the electrode force pre-setting device. However, since the resistance welding spot welding process is completely closed and cannot be observed, spot welding The process includes the coupling of electricity, heat, force and multivariate. These coupling effects are highly nonlinear. The weldment is in the extremely short nucleation process after being thermally expanded and then softened and flattened. Therefore, precise electrode force is required. The pressurization system maintains the electrode force at ±0.5N throughout the welding time However, it is very difficult to encircle; it is conceivable that if there is no follow-up maintenance of the welding force buffer structure, the electrode force will increase when the weldment expands, and the electrode force will decrease when the weldment is crushed. When the welding force is swayed, the electrode force disappears; the electromechanical integrated electrode force pressing system of the present invention combines the synergistic effect of the welding force swaying device and the welding force buffering structure by the precise electrode force presetting device. Restricted to each other, the electrode force is maintained within a predetermined range and remains relatively constant throughout the spot welding period.

下面针对背景技术提出的钴基非晶丝在传感器电路连接的技术难题，本发明进一步公开了钴基非晶丝的包裹焊微连接方法。 In the following, the technical problem of the connection of the cobalt-based amorphous wire in the sensor circuit proposed by the prior art is further disclosed. The present invention further discloses a method of wrapping the micro-joining of the cobalt-based amorphous wire.

正如背景技术所提及，由于钴基非晶丝不仅硬而脆、可焊性极差，而且其在高温下（ 1150°C )磁性消失，因而连接时不能使用高温，同时制作传感器时又要求钴基非晶丝表面的氧化膜必须被彻底清除，使之与电子元件触点的直流电阻值趋于零，如此苛刻的条件使得钴基非晶丝在传感器电路的连接十分困难。所以钴基非晶丝可以说是可焊性差的微小工件的典型，只要能实现钴基非晶丝在传感器电路上的可靠连接，其它各种可焊性差的微小工件同样可以实现可靠连接。 As mentioned in the background art, since the cobalt-based amorphous wire is not only hard and brittle, but also has poor solderability, and its magnetic properties disappear at a high temperature (1150 ° C), high temperature cannot be used for connection, and a sensor is required at the same time. The oxide film on the surface of the cobalt-based amorphous wire must be completely removed so that the DC resistance value of the contact with the electronic component tends to zero. Such harsh conditions make the connection of the cobalt-based amorphous wire in the sensor circuit very difficult. Therefore, cobalt-based amorphous wires can be said to be typical of small workpieces with poor solderability. As long as the cobalt-based amorphous wires can be reliably connected to the sensor circuit, other small workpieces with poor solderability can also be reliably connected.

为了便于理解，在说明本发明钴基非晶丝的包裹焊微连接之前，首先对钴基非晶丝传感器的电路结构进行介绍。 For ease of understanding, the circuit structure of the cobalt-based amorphous wire sensor will be first described before explaining the wrap-welded micro-join of the cobalt-based amorphous wire of the present invention.

请参阅图 3 ,钴基非晶丝传感器的电路 301为印刷线路板电路，其在印刷线路板电路设置有二个连接焊盘 302。在二个连接焊盘 302之间设置有绝缘套管 303 , 绝缘套管 303上则绕有两组可提供交变电流的线圈 304; 钴基非晶丝 307 贯穿绝缘套管 303 , 且两端分别连接在二个连接焊盘 302上；两组漆包线的引出线 305分别焊接在两组漆包线线圈引出接点的四个焊盘 306上。在不同的实施方式中，钴基非晶丝传感器的电路可以设计为贴片的电路结构，也可以设计为骨架样带插脚的电路结构。本实施例钴基非晶丝传感器的电路为印刷线路板电路，其结构相对于骨架样带插脚的电路结构或贴片的电路结构，印刷线路板电路不但具有更容易在连接焊盘作镀锡喷锡工艺处理，还具有在印刷线路板上很容易对另一个焊件加工定位孔，和很容易对二组线圈的漆包线引出线加工定位孔或定位梢，因而钴基非晶丝传感器的电路采用以印刷线路板电路的结构，更加便于采用 HPPR显微焊接设备对钴基非晶丝 307的连接进行以电阻焊单面点焊的包裹焊微连接。 Referring to FIG. 3, the circuit 301 of the cobalt-based amorphous wire sensor is a printed wiring board circuit having two connection pads 302 disposed on the printed wiring board circuit. An insulating sleeve 303 is disposed between the two connection pads 302. The insulating sleeve 303 is wound with two sets of coils 304 for supplying alternating current; the cobalt-based amorphous wires 307 are penetrated through the insulating sleeve 303, and both ends are They are respectively connected to the two connection pads 302; the two sets of enameled wire lead wires 305 are respectively soldered on the four pads 306 of the two sets of enameled wire coil lead-out contacts. In different embodiments, the circuit of the cobalt-based amorphous wire sensor can be designed as a circuit structure of a patch, or can be designed as a circuit structure with a skeleton-like pin. The circuit of the cobalt-based amorphous wire sensor of the present embodiment is a printed circuit board circuit, and the structure thereof is relatively easy to be tinned on the connection pad with respect to the circuit structure of the skeleton-like pin or the circuit structure of the patch. Spray tin process, also has a very good printed circuit board It is easy to process the positioning holes for another weldment, and it is easy to machine the positioning holes or the positioning tips for the enameled wire lead wires of the two sets of coils. Therefore, the circuit of the cobalt-based amorphous wire sensor adopts the structure of the printed circuit board circuit, and the HPPR is more convenient to adopt. The micro-welding apparatus performs a micro-bonding of the cobalt-based amorphous wire 307 by a resistance welding single-side spot welding.

请参阅图 4, 本发明钴基非晶丝的包裹焊微连接方法包括： Referring to FIG. 4, a wrap-weld micro-joining method for a cobalt-based amorphous wire of the present invention includes:

1 )提供钴基非晶丝传感器电路 301、钴基非晶丝 307、包裹焊件 405 以及电阻焊点焊设备；其中，钴基非晶丝电路为印刷线路板电路，其在印刷线路板电路的连接焊盘 302包括印刷线路板铜箔 402和喷涂在铜箔 402上的锡层 403 , 锡层厚度约为 0.10mm, 连接焊盘 302也称之为基底焊件；包裹焊件 405为镀锡铜带，在图 3和图 4中，钴基非晶丝 307的直径为 00.03mm,二个连接焊盘 302 之间的巨离为 8mm,焊盘 302的大小为 lmmx lmm;包裹焊件 405为宽 0.10mm、厚 0.04mm的镀锡铜带，镀锡层厚约 0.02mm; 但是在其它实施方式中，以上参数可以有所变化； 1) providing a cobalt-based amorphous wire sensor circuit 301, a cobalt-based amorphous wire 307, a wrap weldment 405, and a resistance welding spot welding device; wherein, the cobalt-based amorphous wire circuit is a printed circuit board circuit, and the printed circuit board circuit is The connection pad 302 includes a printed wiring board copper foil 402 and a tin layer 403 sprayed on the copper foil 402. The tin layer has a thickness of about 0.10 mm, and the connection pad 302 is also referred to as a substrate soldering member; the package soldering member 405 is plated. Tin-copper tape, in Figures 3 and 4, the diameter of the cobalt-based amorphous wire 307 is 00.03 mm, the large separation between the two connection pads 302 is 8 mm, and the size of the pad 302 is lmm x lmm; 405 is a tinned copper strip having a width of 0.10 mm and a thickness of 0.04 mm, and the tin plating layer is about 0.02 mm thick; however, in other embodiments, the above parameters may be changed;

2 )把钴基非晶丝 307置于传感器电路的连接焊盘 302上，并用包裹焊件 405 覆盖钴基非晶丝 307,通过电阻焊点焊设备以平行电极焊头对包裹焊件 405进行点焊； 2) Cobalt-based amorphous wire 307 is placed on the connection pad 302 of the sensor circuit, and the cobalt-based amorphous wire 307 is covered with a wrap weld 405, and the wrap weld 405 is welded by a parallel electrode horn through a resistance welding spot welding device. Spot welding

3 )包裹焊件 405与连接焊盘 302被焊接在一起，钴基非晶丝 307即被紧紧包裹在包裹焊件 405与连接焊盘 302之间，从而实现了可焊性差的微小工件钴基非晶丝 307与连接焊盘 302的可靠连接；之后把未与连接焊盘 302焊接在一起的包裹焊件 405的多余部分切除，即可完成钴基非晶丝 307的包裹焊微连接。 3) The wrap weld 405 and the connection pad 302 are welded together, and the cobalt-based amorphous wire 307 is tightly wrapped between the wrap weld 405 and the connection pad 302, thereby realizing a small workpiece cobalt with poor weldability. The reliable connection of the base amorphous wire 307 to the connection pad 302; the excess portion of the wrap weld 405 that is not soldered to the connection pad 302 is then removed, and the wrap-welded micro-join of the cobalt-based amorphous wire 307 is completed.

需要说明的是，本发明包裹焊微连接的结构所使用的电阻焊点焊设备优选为上述 HPPR显微焊接设备，所使用的平行电极焊头优选为凹圓弧端面的平行电极焊头，使用时把凹圓弧端面的平行电极焊头安装在 HPPR显微焊接设备上，焊接压力设定在 5.0N, 输出脉冲电压设定在 0.6V, 输出脉冲时间设定在 8ms, 即可对图 4所示在连接焊盘 302上做好搭接接头的包裹焊件 405进行焊接。当然，在不同的实施方式中，本发明也可以采用电极尖端接触式平行电极焊头进行焊接。 It should be noted that the electric resistance welding spot welding apparatus used in the structure of the package welding micro connection is preferably the above HPPR micro welding apparatus, and the parallel electrode welding head used is preferably a parallel electrode welding head with a concave arc end surface, and is used. When the parallel electrode horn of the concave arc end face is mounted on the HPPR micro-welding equipment, the welding pressure is set at 5.0N, the output pulse voltage is set at 0.6V, and the output pulse time is set at 8ms. The wrap weld 405, which is shown as a lap joint on the connection pad 302, is soldered. when However, in various embodiments, the invention may also be fabricated using electrode tip contact parallel electrode horns.

对图 4所示实施例焊接后的钴基非晶丝 307做拉力测试，结果显示其抗拉力 105g, 钴基非晶丝 307两端的电阻值为 16Ω。 The tensile test of the cobalt-based amorphous wire 307 after welding in the example shown in Fig. 4 showed that the tensile strength was 105 g, and the resistance value of the cobalt-based amorphous wire 307 was 16 Ω.

对图 4所示实施例焊接后的钴基非晶丝 307和焊点作纵向切片检查，发现钴基非晶丝 307没有被压扁变形，仍保留 00.03mm的圓柱面；而且，钴基非晶丝 307的表面呈银白色，四周均被锡层浸润包裹，也就是钴基非晶丝 307的表面没有发现氧化膜；焊点的纵切面还可见包裹焊件 405和连接焊盘 302两侧铜金属的相互扩散和再结晶，说明二者的连接为典型的电阻焊点焊的固相连接金相结构。 The longitudinal inspection of the cobalt-based amorphous wire 307 and the solder joint after the welding of the embodiment shown in Fig. 4 revealed that the cobalt-based amorphous wire 307 was not crushed and deformed, and the cylindrical surface of 00.03 mm was still retained; The surface of the crystal wire 307 is silvery white, surrounded by a tin layer, that is, no oxide film is found on the surface of the cobalt-based amorphous wire 307; the longitudinal section of the solder joint can also be seen on both sides of the wrap weldment 405 and the connection pad 302. The interdiffusion and recrystallization of copper metal indicates that the connection between the two is a solid phase connection metallurgical structure of a typical resistance spot welding.

根据上述检测结果，可以得出以下结论： Based on the above test results, the following conclusions can be drawn:

1 ) 因为 00.03mm钴基非晶丝 307的内阻值为 2Q/mm, 所以长度为 8mm 的钴基非晶丝 307的两端电阻值应为 16Ω, 与实验结果相同，说明钴基非晶丝 307与二个连接焊盘 302连接的二个触点处的直流电阻值都接近于零； 1) Since the internal resistance of the 0.000.3mm cobalt-based amorphous wire 307 is 2Q/mm, the resistance value of the cobalt-based amorphous wire 307 having a length of 8 mm should be 16 Ω, which is the same as the experimental result, indicating that the cobalt-based amorphous The DC resistance values of the two contacts of the wire 307 connected to the two connection pads 302 are close to zero;

2 )钴基非晶丝 307的表面没有发现氧化膜，说明 HPPR显微焊接设备在对包裹焊件 405作热压焊和电阻焊时，包裹焊件 405和连接焊盘 302的锡层在加压融熔过程中有效地清除了钴基非晶丝 307表面的氧化膜； 2) No oxide film is found on the surface of the cobalt-based amorphous wire 307, indicating that the HPPR micro-welding device is used for hot-welding and resistance welding of the wrapped weldment 405, and the tin layer of the weldment 405 and the connection pad 302 is added. The oxide film on the surface of the cobalt-based amorphous wire 307 is effectively removed during the melt-melting process;

3 ) 由于锡在 250°C即可融熔，因此钴基非晶丝 307只被锡层浸润包裹而没有发生形变，钴基非晶丝的非晶丝结构也就不会破坏； 3) Since tin can be melted at 250 ° C, the cobalt-based amorphous wire 307 is only infiltrated by the tin layer without deformation, and the amorphous wire structure of the cobalt-based amorphous wire is not destroyed;

4 )钴基非晶丝 307是被发生了固相连接的包裹焊件 405和连接焊盘 302牢固包裹而实现可靠连接的。 4) The cobalt-based amorphous wire 307 is securely joined by a wrapped weldment 405 and a connection pad 302 which are solid-phase bonded.

5 )可焊性差的微小工件可以应用 HPPR显微焊接设备，通过包裹焊微连接实现可靠连接。 5) Small workpieces with poor solderability can be applied with HPPR micro-welding equipment to achieve reliable connection through package solder micro-connections.

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。 Modifications and modifications of the above-described embodiments may be made by those skilled in the art in light of the above disclosure. Accordingly, the invention is not limited to the above disclosed and described DETAILED DESCRIPTION OF THE INVENTION Some modifications and variations of the present invention are also intended to fall within the scope of the appended claims. In addition, although specific terms are used in the specification, these terms are merely for convenience of description and do not limit the invention.

Claims

权利要求书 Claim

1. 一种包裹焊微连接的结构，其特征在于：包括可焊性差的微小工件和分别为基底焊件、包裹焊件的二个焊件，可焊性差的微小工件位于彼此搭接的基底焊件和包裹焊件二个焊件之间，基底焊件和包裹焊件由电阻焊点焊设备点焊，可焊性差的微小工件被焊接在一起的二个焊件紧紧包裹而实现与基底焊件的连接。 A structure for wrapping micro-joining, comprising: a micro-workpiece having poor weldability and two weldments respectively being a base weldment and a wrap weldment, wherein the micro-workpieces having poor weldability are located on the bases overlapping each other Between the weldment and the weldment of the weldment, the base weldment and the wrapped weldment are spot-welded by the electric resistance spot welding equipment, and the small weldments with poor weldability are tightly wrapped by the two weldments welded together. The connection of the base weldment.

2. 根据权利要求 1所述的包裹焊微连接的结构，其特征在于：所述基底焊件和包裹焊件中至少有一个焊件的表面有镀锡或喷锡的锡层，或者二个焊件的表面都有锡层。 2. The structure of the package soldering micro-join according to claim 1, wherein: at least one of the base weldment and the wrap weldment has a tin-plated or tin-plated tin layer, or two The surface of the weldment has a tin layer.

3. 根据权利要求 1所述的包裹焊微连接的结构，其特征在于：所述电阻焊点焊设备是以平行电极焊头对二个焊件进行点焊的。 3. The structure of the package soldering micro-join according to claim 1, wherein: the electric resistance spot welding device is spot-welding the two weldments by a parallel electrode welding head.

4. 根据权利要求 3所述的包裹焊微连接的结构，其特征在于：所述平行电极焊头为电极尖端接触的平行电极焊头、电极尖端连体的平行电极焊头、电极尖端既不接触也不连体的平行电极焊头或平行的二个电极。 4. The structure of the packaged solder micro-join according to claim 3, wherein: the parallel electrode horn is a parallel electrode horn in contact with the electrode tip, the parallel electrode horn of the electrode tip is connected, and the electrode tip is neither Contact parallel electrode horns or parallel two electrodes that are not connected.

5. 根据权利要求 3或 4所述的包裹焊微连接的结构，其特征在于：所述平行电极焊头的焊接端面为凹圓弧端面。 The structure of the package soldering micro-join according to claim 3 or 4, wherein the welding end face of the parallel electrode horn is a concave arc end surface.

6. 根据权利要求 1所述的包裹焊微连接的结构，其特征在于：所述可焊性差的微小工件为由难融质硬的金属及其合金制成的微小工件、表面有绝缘层的微小工件或表面有绝缘漆的微小工件。 6. The structure of the package soldering micro-join according to claim 1, wherein: the minute workpiece having poor solderability is a minute workpiece made of a hard-hard metal and an alloy thereof, and an insulating layer on the surface. A tiny workpiece or a tiny workpiece with an insulating varnish on its surface.

7. 根据权利要求 6所述的包裹焊微连接的结构，其特征在于：所述难融质硬的金属及其合金制成的微小工件为钴及其合金制成的微小工件、铂及其合金制成的微小工件、锰及其合金制成的微小工件、钽及其合金制成的微小工件或钨及其合金制成的微小工件。 7. The structure of a packaged solder micro-join according to claim 6, wherein: the minute workpiece made of the hard-hard metal and the alloy thereof is a minute workpiece made of cobalt and its alloy, platinum and Tiny workpieces made of alloys, tiny workpieces made of manganese and its alloys, tiny workpieces made of tantalum and its alloys, or tiny workpieces made of tungsten and its alloys.

8. 根据权利要求 1所述的包裹焊微连接的结构，其特征在于：所述微小工件为线径小于或等于 00.10mm的线材，或是厚度或宽度小于或等于 0.10mm的带材。 8. The structure of the package soldering micro-join according to claim 1, wherein: the minute workpiece is a wire having a wire diameter of less than or equal to 00.10 mm, or a thickness or width of less than or equal to 0.10 mm. Strip.

9. 根据权利要求 1所述的包裹焊微连接的结构，其特征在于：所述电阻焊点焊设备为 HPPR显微焊接设备， HPPR显微焊接设备综合了热压焊、平行间隙焊、具精确电极力加压***的点焊机机头和电阻焊显微焊接的结构特征。 9. The structure of the package soldering micro-join according to claim 1, wherein: the electric resistance spot welding device is an HPPR micro-welding device, and the HPPR micro-welding device is integrated with hot-welding, parallel gap welding, and the like. Structural features of spot welder heads and resistance welding microwelds for precision electrode force pressurization systems.

10. 一种钴基非晶丝的包裹焊微连接方法，其特征在于包括以下步骤： 10. A method of wrapping solder micro-joining of a cobalt-based amorphous wire, comprising the steps of:

1 )提供钴基非晶丝传感器电路、钴基非晶丝、包裹焊件和电阻焊点焊设备；1) providing a cobalt-based amorphous wire sensor circuit, a cobalt-based amorphous wire, a wrapped weldment, and a resistance welding spot welding device;

11. 根据权利要求 10所述的钴基非晶丝的包裹焊微连接方法，其特征在于：所述步骤 3 )中实现钴基非晶丝与连接焊盘的可靠微连接后，还需把包裹焊件未与连接焊盘焊接在一起的多余部分去除。 11 . The method of claim 10 , wherein after the reliable micro-connection of the cobalt-based amorphous wire and the connection pad in the step 3 ), the method further requires: The excess portion of the wrapped weldment that is not welded to the connection pad is removed.

12. 根据权利要求 10所述的钴基非晶丝的包裹焊微连接方法，其特征在于：所述电阻焊点焊设备优选为 HPPR显微焊接设备。 12. The method of claim 12, wherein the resistance spot welding apparatus is preferably an HPPR microstriping apparatus.

13. 根据权利要求 10所述的钴基非晶丝的包裹焊微连接方法，其特征在于：所述平行电极焊头的焊接端面为凹圓弧端面。 The method according to claim 10, wherein the welding end surface of the parallel electrode horn is a concave arc end surface.

14. 根据权利要求 10所述的钴基非晶丝的包裹焊微连接方法，其特征在于：所述连接焊盘为基底母材镀锡的连接焊盘。 14. The method of claim 12, wherein the connection pad is a connection pad for tin-plating a base material.

15. 根据权利要求 10所述的钴基非晶丝的包裹焊微连接方法，其特征在于：所述包裹焊件为镀锡焊件。 15. The method of claim 1, wherein the wrap weldment is a tin-plated weldment.

16. 根据权利要求 10至 15 中任一项所述的钴基非晶丝的包裹焊微连接方法，其特征在于：所述钴基非晶丝传感器电路为印刷线路板电路。 The wrap-weld micro-joining method of a cobalt-based amorphous wire according to any one of claims 10 to 15, wherein the cobalt-based amorphous wire sensor circuit is a printed wiring board circuit.