WO2006002584A1 - Tete de machine a souder equipee d'un capteur de pression - Google Patents

Tete de machine a souder equipee d'un capteur de pression Download PDF

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Publication number
WO2006002584A1
WO2006002584A1 PCT/CN2005/000718 CN2005000718W WO2006002584A1 WO 2006002584 A1 WO2006002584 A1 WO 2006002584A1 CN 2005000718 W CN2005000718 W CN 2005000718W WO 2006002584 A1 WO2006002584 A1 WO 2006002584A1
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WO
WIPO (PCT)
Prior art keywords
pressure sensor
welding
head
machine head
circuit
Prior art date
Application number
PCT/CN2005/000718
Other languages
English (en)
French (fr)
Inventor
Shitong Yang
Original Assignee
Shitong Yang
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
Application filed by Shitong Yang filed Critical Shitong Yang
Priority to JP2006523510A priority Critical patent/JP2007500080A/ja
Publication of WO2006002584A1 publication Critical patent/WO2006002584A1/zh

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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
    • B23K11/24—Electric supply or control circuits therefor
    • B23K11/25—Monitoring devices
    • B23K11/252—Monitoring devices using digital means
    • B23K11/255—Monitoring devices using digital means the measured parameter being a force

Definitions

  • the invention relates to a spot welding machine head, which is suitable for a welding machine which requires precise control of welding force for precise welding. Background technique
  • All welding machines must be equipped with three welding parameters: welding current, welding time and welding force.
  • the welding force of the traditional technology is set and controlled by the compression spring. Due to the structure and processing technology of the spring, when the multiple springs compress the same distance, the error of the compression force of each spring is large; even the same spring, each time Both compress the same distance, and the compression force is also the same, so the accuracy of the compression spring is poor. 05 ⁇ Precision floating connection, the welding force must be precisely controlled. Obviously, the use of compression springs to set and control the welding force does not meet the requirements for precision welding. Summary of the invention
  • An object of the present invention is to provide a spot welder head which can precisely set, control and display the welding force, and is suitable for various welders which need to accurately control the welding force.
  • the spot welding machine head with a pressure sensor of the present invention comprises a machine head, a welding head clamp and a welding head mounted on the welding head clamp, and
  • the machine head is also provided with a pressure sensor and a welding force transmission device. One end of the pressure sensor is connected with the welding force transmission device, and the other end is directly or indirectly connected with the welding head clamp.
  • the machine head further includes a baroreceptor signal processing circuit. It is electrically connected to the pressure sensor and electrically connected to the CPU.
  • the spot welder head uses a pressure sensor to control and display the welding force, and has a simple structure and high precision.
  • FIG. 1 is a schematic structural view of a pressure sensor connected to a head of a spot welding machine according to the present invention.
  • FIG. 2 is a circuit block diagram of a pressure sensor of a spot welding machine head according to the present invention.
  • FIG 3 is a schematic structural view of a specific embodiment of a spot welding machine head according to the present invention.
  • a pressure sensor 3 composed of a baroreceptor 2 and a deformation chamber 1 is mounted in the head of the spot welding machine of the present invention.
  • the shape of the deformation chamber is generally processed into a dumbbell shape, and a baroreceptor is mounted in the deformation chamber.
  • the baroreceptor On the outer side, the baroreceptor has a lead wire, and the lead wire of the baroreceptor is also called a pressure sensor lead wire.
  • the pressure sensor is generally in the shape of a rectangular parallelepiped, as shown in Fig.
  • the welding force transmission device 4 can be used as a fixed installation pressure sensor at the same time.
  • the welding force can be supplied by manpower, mechanical force, compressed air force or electric power, so the welding force transmission device can transmit manpower by the tie rod, the screw rod transmits the mechanical force, the pneumatic device transmits the compressed air force or the solenoid valve transmits the electric power and the like.
  • Pressure sensor and transmission can be supplied by manpower, mechanical force, compressed air force or electric power, so the welding force transmission device can transmit manpower by the tie rod, the screw rod transmits the mechanical force, the pneumatic device transmits the compressed air force or the solenoid valve transmits the electric power and the like.
  • connection method of the welding force device may be a direct connection, and sometimes a buffer is used, and an indirect connection method is often used.
  • the other end of the pressure sensor is connected to the electrode holder 6.
  • the connection method can be either a direct connection or an indirect connection.
  • Fig. 1, 5 is a structure in which the pressure sensor is indirectly connected to the welding head holder 6, and the welding head 7 is mounted on the welding head holder.
  • the pressure sensor 3 is connected to the baroreceptor signal processing circuit 12 through a pressure sensor lead line.
  • the signal processing circuit is electrically connected to the interface of the CPU circuit 11
  • the control circuit 13 is connected to the CPU circuit.
  • the required welding force is first preset in the button of the control circuit, and is displayed on the parameter display circuit by the CPU.
  • the welding force F passes through the welding force transmission device, the pressure sensor is pulled and the welding head clamp and the welding head are moved to make the welding head and the workpiece have a certain contact force, and the contact force is also the splicing force, and the reaction force f and F of the contact force.
  • the deformation cavity is deformed, and the potential difference generated by the deformation is detected and converted into a signal by a reactive pressure sensor, and the electrical signal is amplified by the baroreceptor signal processing circuit.
  • the pressure sensor circuit and the control circuit and the parameter display circuit are all processed by the CPU, when the deformation force reaches the preset value, the CPU issues a trigger command to supply the welding current to the welding head.
  • the potential difference generated by the deformation of the deformation chamber is very weak, it is detected by the pressure sensing device and converted into a signal signal, which needs to be amplified by the baroreceptor signal processing circuit. Therefore, the installation of the baroreceptor signal processing circuit is close to the pressure sensor, and it is preferably installed directly on the machine. In the head frame, or on the outer side of the head frame, to avoid signal attenuation due to the long line, affecting the control accuracy of the welding force.
  • a spot welder head frame 21 is machined from metal, and a pressure sensor is mounted in the head frame as follows: One end of the pressure sensor 3 passes gold
  • the clamp block 22 is fixed and connected with the metal pressing block 23, and the metal pressing block is connected with two small shafts 24 fixed on the frame, and the two small shafts are mounted with linear sliding bearings, and the metal pressing blocks are further connected with the pulling rods 25.
  • the link is connected to the foot pedal via the cable 26.
  • the other end of the pressure sensor is also fixed by a metal clamp 27 and is coupled to the slide shaft 28, and the linear shaft is mounted at both ends of the slide shaft and fixed to the frame.
  • the lower end of the slide shaft is coupled to the horn clip 6, and the horn 7 is mounted on the horn clip.
  • the metal pressure block can be very Smoothly moving the pressure sensor, the sliding shaft, the welding head clamp and the welding head down, so that the welding head contacts the workpiece.
  • the reaction force f and the pulling force F of the contact force deform the deformation chamber of the pressure sensor, and the potential difference generated by the deformation is stressed.
  • the susceptor 2 detects and converts into a telecommunication signal, and the pressure sensor lead wire is electrically connected to the baroreceptor signal processing circuit 12 mounted on the inner side wall of the frame, and the baroreceptor signal processing circuit is connected to the circuit installed outside the head frame, specifically Electrically connected to the CPU.
  • the circuit outside the head frame includes a CPU circuit, a control circuit, a parameter display circuit, and the like.
  • the CPU circuit has an interface connected to the baroreceptor signal processing circuit, and a control circuit and a parameter display circuit are connected to the CPU.
  • the above CPU circuit, control circuit, parameter display circuit, etc. are made into a total control circuit, and the total control circuit is installed in the power control box of the welding machine, and the input button of the control circuit and the display screen of the parameter display circuit are provided on the control panel Etc., easy to operate and observe.
  • the tie rod 25, the metal pressing block 23, the two small shafts 24 and the metal clamping block 22 in the spot welding machine head constitute a welding force transmission device
  • the metal clamping block 27 and the sliding shaft 28 constitute an indirect component.
  • the spot welding machine head with the pressure sensor of the invention can be assembled on any type of welding machine which needs to accurately control the welding force welding machine.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Resistance Welding (AREA)

Description

一种带压力传感器的点焊机机头
技术领域
本发明涉及一种点焊机机头， 适用于需要精确控制焊接力进行精 密焊接的焊机。 背景技术
所有的电阻焊焊机都要设置焊接电流、 焊接时间和焊接力三个焊 接参数。 传统技术焊接力都是由压缩弹簧设定和控制， 由于弹簧的结 构和加工技术决定， 当多根弹簧压缩相同距离时， 每根弹簧压缩力的 误差较大； 即使是同一根弹簧， 每一次都压缩相同距离， 其压缩力也, 有误差， 所以压缩弹簧的精确度较差。 而仪器.、 仪表和微型电子元器 件的制造， 其工件的厚度往往小于 0. 1腿； 印刷线路板的修补、 太阳能 电池的焊接， 工件的厚度更薄， 甚至小于 0. 05mm, 要进行这样的精密 浮接， 必须要精确控制焊接力。 显然， 以压缩弹簧来设定和控制焊接 力满足不了精密焊接的使用要求。 发明内容
本发明的目的是提供一种点焊机机头， 可精确设定、 控制和显示 焊接力， 适用于各种需精确控制焊接力的焊机。
本发明的技术方案是通过如下方式实现的： 本发明带压力传感器 的点焊机机头包括机头、 焊头夹以及装设在焊头夹上的焊头， 此外，
更正 细 ^!第 91条) 该机头内还装设有压力传感器和焊接力传递装置， 压力传感器的一端 与焊接力传递装置连接， 另一端则直接或间接与焊头夹连接； 此外， 机头还包括压力感受器讯号处理电路， 其与所述压力传感器电性连接， 并对外电性连接 CPU。
本发明相对于现有技术而言， 具有如下优点: 点焊机机头采用压 力传感器控制和显示焊接力， 结构简单且精确度高。
I
1 附图说明
图 1是本发明点焊机机头内安装连接压力传感器的结构示意图 图 2是本发明点焊机机头的压力传感器的电路原理框图
图 3是本发明点焊机机头一种具体实施的结构示意图 具体实施方式
如图 1 所示， 本发明点焊机机头内安装有一个由带压力感受器 2 和形变腔 1构成的压力传感器 3， 形变腔的形状一般加工成如哑铃形， 压力感受器安装在该形变腔的外侧面， 压力感受器具有引出线， 压力 感受器的引出线也称压力传感器引出线。 压力传感器一般呈长方体， 如图 1 所示， 在与形变腔哑铃形方向一致的压力传感器的两端， 其中 一端与焊接力传递装置 4连接， 焊接力传递装置可同时作固定安装压 力传感器使用。 焊接力可以由人力、 机械力、 压缩空气力或电动力提 供， 所以焊接力传递装置可以由拉杆传递人力， 丝杆传递机械力， 气 动装置传递压缩空气力或电磁阀传递电动力等等。 压力传感器与传递
更正 细 ^!第 91条) 焊接力装置的连接方法， 可以是直接连接， 有时为了緩冲， 往往采用 间接连接的方法。 压力传感器的另一端与电极夹头 6连接， 同样， 连 接方法既可以是直接连接， 也可以是间接连接。 图 1 中 5为压力传感 器与与焊头夹 6间接连接的结构， 焊头 7安装在焊头夹上。
如图 1所示， 压力传感器 3通过压力传感器引出线与压力感受器 讯号处理电路 12连接， 该讯号处理电路再与 CPU电路 11的接口电性 连接， 与 CPU电路连接的还有控制电路 13， 参数显示电路 14等， 工作 时， 首先把所需要的焊接力在控制电路的按键进行预设定， 并通过 CPU 在参数显示电路显示。 当焊接力 F通过焊接力传递装置， 牵拉压力传 感器并带动焊头夹和焊头移动, 使焊头和工件有一定的接触力， 该接 触力也就是烊接力, 接触力的反作用力 f 与 F共同作用， 使形变腔产 生形变， 形变产生的电势差， 被反应灵敏的压力传感器检测并转化为 电讯号， 再通过压力感受器讯号处理电路把电讯号放大。 由于压力感 受器讯号处理电路和控制电路、 参数显示电路都通过 CPU处理， 当形 变力达到预设定值, CPU发出触发指令， 为焊头提供焊接电流。 由于形 变腔形变产生的电势差很微弱， 被压力感受.器检测并转化为电讯号， 需通过压力感受器讯号处理电路放大， 所以安装压力感受器讯号处理 电路离压力传感器要近， 最好直接安装在机头框架内， 或安装在机头 框架的外侧面， 以免因线路过长而造成讯号衰减， 影响焊接力的控制 精确度。
在图 3所示的实施例中， 以金属加工一个点焊机机头框架 21 , 在 机头框架内安装压力传感器的方法如下： 压力传感器 3 的一端通过金
更正 细 ^!第 91条) 属夹块 22 固定， 并与金属压块 23连接， 该金属压块与固定在框架上 的二根小轴 24连接， 二根小轴上安装有直线滑行轴承， 该金属压块再 与拉杆 25连结， 拉杆通过拉索 26与脚踏板连接。 压力传感器的另一 端也通过金属夹块 27 固定， 并与滑轴 28连接， 滑轴二端安装有直线 滑行轴承并固定在框架上。 滑轴的下端与焊头夹 6连接， 焊头 7安装 在焊头夹上。 工作时， 以人力踩动脚踏板， 脚踏板通过拉索牵拉拉杆 及金属压块， 由于固定金属压块的二根小轴和滑轴都安装有直线滑行 轴承， 金属压块可以很平顺地带动压力传感器、 滑轴、 焊头夹及焊头 下移， 使焊头接触工件， 这个接触力的反作用力 f 和牵拉力 F使压力 传感器的形变腔形变， 形变产生的电势差被压力感受器 2检测并转化 为电讯号， 通过压力传感器引出线与安装在框架内侧壁的压力感受器 讯号处理电路 12电性连接， 压力感受器讯号处理电路再与安装在机头 框架外的电路连接， 具体是与 CPU电性连接。
机头框架外的电路包括 CPU 电路、 控制电路、 参数显示电路等。 CPU电路有接口与压力感受器讯号处理电路连接，与 CPU连接的还有控 制电路、 参数显示电路。 把上述 CPU 电路、 控制电路、 参数显示电路 等做成总控制电路， 总控制电路安装在焊机的电源控制箱内， 控制箱 面版上设有控制电路的输入按键和参数显示电路的显示屏等， 便于操 作及观察。
在该实施例中， 点焊机机头中的拉杆 25、 金属压块 23、 二根小轴 24和金属夹块 22等组成焊接力传递装置， 而金属夹块 27、 滑轴 28等 组成间接与焊头夹连接的结构。
正 细 ί 91条) 本发明带压力传感器的点焊机机头， 可装配在需精确控制焊接力 焊机中的任何一种机型焊机。
更正 细^!第 91条)

Claims

权利要求书
1、 一种带压力传感器的点浮机机头， 包括机头、 焊头夹以及装设 在焊头夹上的焊头， 其特征在于： 该机头内还装设有压力传感器和焊 接力传递装置， 压力传感器的一端与焊接力传递装置连接， 另一端则 直接或间接与焊头夹连接； 此外， 机头还包括压力感受器讯号处理电 路， 其与所述压力传感器电性连接， 并对外电性连接 CPU。
2、 根据权利要求 1所述的带压力传感器的点焊机机头， 其特征在 于： 所述压力感受器讯号处理电路安装在机头内。
3、 根据权利要求 1所述的带压力传感器的点焊机机头， 其特征在 于： 所述压力感受器讯号处理电路安装在点焊机机头的外侧。
4、 根据权利要求 1至 3任意一项中所述的带压力传感器的点焊机 机头， 其特征在于： 所述的压力传感器具有引出线， 并通过引出线实 现与压力感受器讯号处理电路的电性连接。
5、 根据权利要求 4所述的带压力传感器的点焊机机头， 其特征在 于： 所述机头还包括控制电路、 参数显示电路， 两者分别与所述 CPU 电性连接。
6
更正 细^!第 91条)
PCT/CN2005/000718 2004-07-05 2005-05-23 Tete de machine a souder equipee d'un capteur de pression WO2006002584A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2006523510A JP2007500080A (ja) 2004-07-05 2005-05-23 圧力センサを有するスポット溶接機ヘッド

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN 200410027878 CN1593831A (zh) 2004-07-05 2004-07-05 一种带压力传感器的点焊机机头
CN200410027878.0 2004-07-05

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Publication Number Publication Date
WO2006002584A1 true WO2006002584A1 (fr) 2006-01-12

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CN101201339B (zh) * 2006-12-13 2012-05-30 天津科技大学 电阻点焊质量监测方法
CN101829841B (zh) * 2010-04-27 2012-07-04 广州（从化）亨龙机电制造实业有限公司 一种专用于银带与铜带进行连续电阻焊的缝焊机
DE102010042085A1 (de) * 2010-10-06 2012-04-12 Siemens Aktiengesellschaft Schweißkopf mit Kraftsensor
CN102825372B (zh) * 2011-06-14 2014-09-17 深圳市鹏煜威科技有限公司 铜铝柱电阻焊机及其焊接控制方法
CN102225498A (zh) * 2011-06-20 2011-10-26 珠海精易焊接设备有限公司 双缓冲电子点焊机机头
CN103658960A (zh) * 2013-12-03 2014-03-26 广州微点焊设备有限公司 电阻焊显微焊接点焊机
CN104475953B (zh) * 2014-11-10 2017-07-04 镇江震东电光源有限公司 一种用于加工道路机动车辆灯泡的点焊机焊头结构
CN104607791B (zh) * 2015-01-22 2017-05-31 广州微点焊设备有限公司 T型焊头夹
CN104607790A (zh) * 2015-01-22 2015-05-13 广州微点焊设备有限公司 电极力检测装置和带电极力检测装置的点焊机头
WO2018000391A1 (zh) * 2016-06-30 2018-01-04 广州微点焊设备有限公司 精确电极力加压系统的点焊机头
CN107717200B (zh) * 2017-09-26 2019-08-09 西北工业大学 精密微型电阻点焊电极压力实时监测装置

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JP2002035950A (ja) * 2000-07-27 2002-02-05 Honda Motor Co Ltd 溶接機の故障診断装置及び故障診断方法

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JP2002035950A (ja) * 2000-07-27 2002-02-05 Honda Motor Co Ltd 溶接機の故障診断装置及び故障診断方法
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JP2007500080A (ja) 2007-01-11

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