WO2013163874A1 - Protection device for spot-welding electrode with automatic feeding mechanism - Google Patents
Protection device for spot-welding electrode with automatic feeding mechanism Download PDFInfo
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- WO2013163874A1 WO2013163874A1 PCT/CN2012/085616 CN2012085616W WO2013163874A1 WO 2013163874 A1 WO2013163874 A1 WO 2013163874A1 CN 2012085616 W CN2012085616 W CN 2012085616W WO 2013163874 A1 WO2013163874 A1 WO 2013163874A1
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- ratchet
- stage
- bracket
- pawl
- gears
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Classifications
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- 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
- B23K11/36—Auxiliary equipment
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- 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
Definitions
- the present invention relates to a device for improving the life of a spot welding electrode, and more particularly to a spot welding electrode protection device. Background technique
- the main function of the spot welding electrode is to transmit current, pressurize and dissipate heat.
- the welding current during spot welding can be as high as several thousand to several tens of thousands of amps, the electrode pressure can reach several hundred megapascals, and the electrode head diameter will be It increases with the increase of electrode use time, which leads to a decrease in current density during spot welding, which leads to a decrease in the diameter of the formed solder joints and a decrease in strength.
- the existing spot welding electrodes can only weld about 500 points at a time. Frequent refurbishment and replacement of electrodes reduces production efficiency and increases production costs. Therefore, electrode life is an important measure of spot weld quality and weldability. index. Therefore, research on extending the life of the electrode is urgently needed.
- the first is to study the new spot welding electrode materials; the second is to select welding materials with good weldability; the third is to improve the spot welding process and equipment.
- the research on the electrodes is started from the electrode itself, which is to improve the life of the electrode material itself, and does not fundamentally solve the problem of electrode loss.
- a resistance spot welding electrode life extension device is disclosed in Chinese Patent Publication No. CN101081456, the disclosure of which is hereby incorporated by reference.
- the device comprises an upper moving bracket 6, an upper bracket 5, and an active connection between the upper moving bracket 6 and the upper bracket 5; a lower bracket 16 and a lower moving bracket 12, which are also movably connected; an upper spindle 3 and a lower spindle 18, Springs respectively mounted between the upper and lower spindles 3, 18 and the upper and lower brackets 5, 16; curved upper flywheel 9 and lower flywheel 19; upper ratchet mechanism 1 and lower ratchet mechanism 13; respectively located on the upper and lower flywheels 9 , copper plate on 19; upper link mechanism and lower link mechanism; upper hook mechanism and lower hook mechanism.
- the above-mentioned resistance spot welding electrode life extension device has a complicated structure, a large volume, and the detail design is not reasonable. For example, the step counting device is inaccurate, thereby making it impossible to install it into the corresponding device.
- the present invention provides a spot welding electrode protection device having an automatic feeding mechanism, which can reduce electrode alloying, abrasion, pitting and thermal fatigue, etc., and improve electrode life, thereby achieving the purpose of protecting the electrode.
- the spot welding electrode protection device with the automatic feeding mechanism is composed of two sets of the same structure and respectively fixing the upper and lower electrodes.
- the protection unit includes a bracket body, and one end of the bracket body is provided with a moving bracket fixedly connected to the electrode and movable up and down; the lower part of the bracket body is a "door" frame, and the "door”
- An inner bracket movable up and down is disposed in the frame, a bottom is disposed on a bottom of the "door” frame, and a bottom surface of the base is coated with an insulating coating; a horizontal axis is disposed in the inner bracket, and the horizontal axis is
- the upper fixed body has a pair of gears, and has a replaceable metal piece, both sides of which are racks that cooperate with the pair of gears; the pair of gears are provided with a ratchet pawl mechanism, and the ratchet pawl mechanism The pawl is
- the two gears move the metal sheet; the front and rear sections of the metal plate are respectively provided with bent plates which are bent upward and downward, and the angles of the front and rear bent plates are matched; the spindle is fixed a feeding box, a bottom of the side wall of the feeding box is provided with a feeding opening, the width of the feeding opening corresponds to the width of the metal piece, and the height of the feeding opening is consistent with the working height of the metal piece, when the pair
- the gear moves the metal piece, due to the action of the bent plates at the front and rear ends of the metal piece, a piece of metal piece on the front side moves the metal piece behind, so that the metal piece is sequentially pulled out from the feeding box.
- the spot welding electrode protection device of the present invention has an automatic feeding mechanism, wherein the upper side of the bracket body is a fork structure, and the moving bracket is provided with a through hole for inserting into the bracket body, the moving
- the up and down movement of the bracket is realized by a main shaft disposed in the middle of the upper portion of the bracket body, a pressure spring disposed on the main shaft, and a limiting structure disposed on the main shaft; the moving bracket is provided with a fixing electrode Clamping structure.
- the present invention has a spot welding electrode protection device with an automatic feeding mechanism, wherein the ratchet pawl mechanism comprises a ratchet set having a three-stage adjustment function, the ratchet set comprising three ratchets and three spines respectively corresponding to three ratchets
- the claws, the two-stage ratchets in the ratchet set are set as the adjustable second-stage ratchets, thereby forming different combinations, so that the number of points of the electrodes at the same position of the metal piece can be arbitrarily adjusted during the spot welding process.
- the ratchet set with three-stage adjustment function uses a three-stage ratchet, the number of primary ratchet teeth is 10, including one tooth with deeper teeth; the second ratchet The number of teeth is 8 or 10, including two symmetrically distributed teeth with deeper teeth; the number of teeth of the third-stage ratchet is 10; when the first-stage pawl extends into the tooth with deeper teeth on the primary ratchet, At the same time, the secondary pawl is in contact with the secondary ratchet, and the secondary ratchet is rotated; when the secondary pawl extends into the deeper tooth on the secondary ratchet, the third-stage pawl is only three The level ratchet contact toggles the three-stage ratchet rotation.
- the metal sheet is a copper sheet, the thickness of the copper sheet is 0. 5-1. 2 mm.
- the spot welding electrode protection device having the automatic feeding mechanism of the present invention
- a metal piece is placed between the electrode and the workpiece, and the loss of the electrode is replaced by the consumption of the metal piece.
- the electrode head has scratches caused by a little physical friction on the copper sheet and a little aluminum is adhered to the electrode when the copper sheet is welded through in the final stage of the experiment, and the electrode is hardly damaged, especially using copper.
- the welding quality is relatively good and does not react with the electrode. Therefore, the electrode can be almost completely free from loss and the electrode is zero-depleted, thereby solving the technical problem of protecting the electrode.
- the device of the invention has a simple structure, a small volume and is easy to implement.
- an automatic feeding device which enables the spot welding process to be continued without manual refueling, thereby reducing the operation difficulty, reducing the process time, and further reducing the working cost.
- Figure 1-1 is a schematic view showing the assembly of an electrode life extension device and an upper electrode in the prior art
- Figure 1-2 is a schematic view showing the assembly of the device and the upper electrode as seen from the rear of Figure 1-1;
- Figure 1-3 is a schematic view showing the assembly of the device shown in Figure 1-1 and the lower electrode;
- Figure 2-1 is a front cross-sectional view showing a protection unit of the spot welding electrode protection device with an automatic feeding mechanism of the present invention
- Figure 2-2 is a plan view of the protection unit shown in Figure 1-1;
- Figure 2-3 is a left side view of the protection unit shown in Figure 1-1;
- Figure 2-4 is a right side view of the protection unit shown in Figure 1-1 when the moving bracket is at a low point;
- FIG. 2-5 is a schematic view showing the assembly of the protection unit, the upper electrode, the metal piece and the feeding box shown in FIG. 1-1;
- FIG. 3-1 is a schematic view showing the outline of the first stage ratchet in the ratchet group of the present invention;
- 3-2 is a schematic view showing the outline of a secondary ratchet in the ratchet set of the present invention.
- 3-3 is a schematic view showing the outline of another secondary ratchet in the ratchet set of the present invention.
- 3-4 are schematic views of the outline of a three-stage ratchet in the ratchet set of the present invention. Description of the main reference symbols in the figure:
- the spot welding electrode protection device with the automatic feeding mechanism of the invention is composed of two sets of protection units having the same structure and respectively fixing the upper and lower electrodes. The following is a detailed description of one of the protection units.
- the protection unit includes a bracket body 103.
- the bracket body 103 is provided with a fork structure. One end of the bracket body 103 is fixedly connected to the electrode 130.
- the movable bracket 101 can be moved up and down; the lower portion of the bracket body 103 is a "door" frame 105, and the "door” frame 105 is provided with an inner bracket 113 movable up and down, and the "door” frame 105 is provided.
- the bottom of the base 114 is provided with an insulating coating; the inner bracket 113 is provided with a horizontal axis 116.
- the moving bracket 101 is provided with a through hole.
- the up and down movement of the moving bracket 101 is through a main shaft 109 disposed in the upper middle portion of the bracket body 103, and a compression spring 102 fitted on the main shaft 109 and disposed on the main shaft
- the limit structure 119 on the 109 defines the limit position on the moving bracket 101.
- the moving bracket 101 is provided with a device for fixing the electrode 103.
- Clip structure, the clamping structure includes a shift Clamping collar with an opening on the stand 101 for fastening the fastening bolt 10 and the clamp ring member 112.
- a horizontal axis is disposed in the "door" frame 103 at the lower portion of the bracket body 103.
- the thickness of the copper sheet is 0.5.
- the thickness of the copper sheet is 0.5. -1. 2 mm.
- a rack having a tooth shape conforming to the gear tooth shape is provided on both sides of the length of the metal piece 120, and both ends of the metal piece 120 in the moving direction are respectively bent at an angle of 45 degrees upward and downward, that is, The front end of the metal plate 120 in the moving direction is provided with an upwardly bent plate, and a rearward bent plate is provided at a rear end in the moving direction of the metal plate 120; the metal piece 120 is stored in the feeding box In 140, the feeding box is a metal box fixed on the main shaft 109.
- the bottom of the side wall of the feeding box 140 is provided with a feeding port, and the width of the feeding port corresponds to the width of the metal piece, because the front and rear ends of each piece of metal piece 120 There are respectively bent plates that are upward and downward, and the angles are matched. Therefore, during the operation of the spot welding electrode protection device with the automatic feeding mechanism, when a metal piece 120 is sent out, the front piece of the bent plate is just hooked. When the pair of gears 107 drive the metal piece 120 to move, the metal piece 120 can be pulled out from the feeding box in sequence. In order to prevent the gear from being reversed, the anti-falling pawl 106 and the elastic piece 108 are disposed.
- a ratchet pawl mechanism is provided on the outer side of one of the gears, and the pawl 104 in the ratchet pawl mechanism passes through the tension spring 111 and the bracket body 103.
- the tension of the tension spring 111 causes the pawl to momentarily press against the teeth of the ratchet wheel 141; the ratchet pawl mechanism drives the pair of gears 107 to rotate, and the pair of gears further drive the metal piece 120 to move.
- the ratchet pawl mechanism includes a ratchet set having a three-stage adjustment function, the ratchet set includes three ratchets 141, 142, 143 and three pawls respectively corresponding to the three ratchets, and the ratchet set is set to have By changing the secondary ratchets to form different combinations, it is possible to arbitrarily adjust the number of dots of the electrodes at the same position of the metal piece during the spot welding process.
- the ratchet set with three-stage adjustment function uses a three-stage ratchet.
- the primary ratchet 141 has a number of teeth of 10, including a deep tooth profile.
- the number of teeth of the secondary ratchet 142 is 8 (Fig. 3-2) or 10 (Fig. 3-3), including two symmetrically distributed teeth with deeper teeth; the number of teeth of the third stage ratchet 143 is 10.
- the movement process of the protection unit in the spot welding electrode protection device with the automatic feeding mechanism of the invention is: arranging the two protection units symmetrically up and down, and fixing the upper and lower electrodes respectively and clamping them in the respective clamping ring 110, and ensuring The central axes of the upper and lower electrodes coincide and the center lines of the spindles of the two protection units coincide, and metal sheets are inserted into the two protection units, respectively.
- the lower electrode portion is similar to the upper electrode portion during movement, except that the lower electrode is not moved at this time, and the lower spindle is moved downwardly and backwardly, and the downward force is brought by the downward movement of the upper electrode.
- the upper electrode is in contact with the metal piece in the upper protection unit
- the base of the upper protection unit contacts the workpiece and continues to push the workpiece downward;
- the support body of the lower protection unit forces the lower spindle to move downward.
- the ratchet pawl mechanism in the lower protection unit is moved, and the movement of the moving bracket in the upper protection unit is the same as the upward movement.
- the movement of the ratchet pawl mechanism during the movement is the same as in the upper protection unit and will not be described again.
- the ratchet set is composed of three stages of ratchets. Composition
- Both the primary and secondary ratchets have deeper teeth. Only when the longer claws of the primary pawl encounter deep teeth, the shorter of the secondary pawls can reach the secondary ratchet wheel. In the teeth, and drive the secondary ratchet to move circumferentially, and when the shorter claw of the secondary pawl reaches into the deeper interdental gap of the secondary ratchet, the shortest three-staged pawl can reach the third-stage ratchet wheel. In the tooth, the pair of gears 107 are driven to rotate, that is to say, different first-stage ratchets in the ratchet group cooperate with the second-stage ratchet and the three-stage ratchet to change different number of hits.
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Abstract
A protection device for a spot-welding electrode with an automatic feeding mechanism comprises two groups of identical protection units respectively fixed on an upper electrode and a lower electrode. The protection unit comprises a movable bracket (101) which is fixedly connected with the electrode (130) and can move up and down along a bracket body (103). The lower part of the bracket body is a portal frame (105); an inner bracket (113) capable of moving up and down is provided inside the portal bracket and a pedestal (114) coated with an insulation coating is equipped at the bottom of the portal bracket. In the inner bracket is provided with a horizontal shaft (116) which is fixedly connected with a pair of gears (107); the pair of gears are upwardly linked with a ratchet -and-pawl mechanism. The pawl (104) in the ratchet-and-pawl mechanism is connected with the bracket body through a tension spring (111); the two gears drive a metal sheet (120) to move; the metal sheet is extracted from a feeding box (140). The front and the rear section in the direction of the movement are respectively provided with an upward and downward flexing folded plate whose angles are coincided; and a rack engaging with the pair of gears is respectively provided at the two sides of the metal sheet. The spot-welding electrode protection device of the spot-welding electrode can realize the automatic feed, improve the service life of the electrode and protect the electrode.
Description
具有自动送料机构的点焊电极保护装置 技术领域 Spot welding electrode protection device with automatic feeding mechanism
本发明涉及一种用于提高点焊电极寿命的装置, 尤其涉及一种点焊电极保护装置。 背景技术 The present invention relates to a device for improving the life of a spot welding electrode, and more particularly to a spot welding electrode protection device. Background technique
目前, 在现代航空、 汽车和家电等行业中, 防锈能力较好、 使用寿命高的镀锌钢 板和铝合金板的应用日益增多。 由于大量采用薄板结构, 焊接时一般采用点焊工艺来 获得良好的焊接质量。 At present, in the modern aviation, automobile and home appliance industries, the application of galvanized steel sheets and aluminum alloy sheets with better rust prevention ability and high service life is increasing. Due to the large number of thin plate structures, spot welding is generally used for welding to obtain good weld quality.
在点焊过程中, 点焊电极的主要功能是传输电流、 加压和散热, 点焊时的焊接电 流可高达数千至数万安, 电极压力可达几百兆帕, 电极头部直径将随电极使用时间的 增加而增加, 从而会导致点焊时电流密度下降而使形成的焊点直径减小、 强度下降, 如在大量使用电阻点焊的汽车行业, 一般情况下汽车车身需焊接 5000-6000 点, 但现 有的点焊电极一次只能焊 500点左右, 频繁的整修和更换电极降低了生产效率, 提高 了生产成本, 因此, 电极寿命成为衡量其点焊质量和焊接性的重要指标。 所以迫切需 要进行关于延长电极寿命方面的研究。 In the spot welding process, the main function of the spot welding electrode is to transmit current, pressurize and dissipate heat. The welding current during spot welding can be as high as several thousand to several tens of thousands of amps, the electrode pressure can reach several hundred megapascals, and the electrode head diameter will be It increases with the increase of electrode use time, which leads to a decrease in current density during spot welding, which leads to a decrease in the diameter of the formed solder joints and a decrease in strength. For example, in the automotive industry where resistance spot welding is used in a large amount, in general, the automobile body needs to be welded 5000. -6000 points, but the existing spot welding electrodes can only weld about 500 points at a time. Frequent refurbishment and replacement of electrodes reduces production efficiency and increases production costs. Therefore, electrode life is an important measure of spot weld quality and weldability. index. Therefore, research on extending the life of the electrode is urgently needed.
人们主要从以下三方面提高点焊电极的寿命。 一是研究新型的点焊电极材料; 二 是选择焊接性好的焊接材料; 三是改进点焊工艺和设备。 目前对电极的研究都是从电 极本身着手, 都是提高电极材料本身的寿命, 并未从根本上解决电极损耗的问题。 People mainly improve the life of spot welding electrodes from the following three aspects. The first is to study the new spot welding electrode materials; the second is to select welding materials with good weldability; the third is to improve the spot welding process and equipment. At present, the research on the electrodes is started from the electrode itself, which is to improve the life of the electrode material itself, and does not fundamentally solve the problem of electrode loss.
公开号为 CN101081456,其公开日为 2007年 12月 5日的中国发明专利中公开了一 种电阻点焊电极延寿装置,如图 1-1、图 1-2和图 1-3所示,该装置包括上移动支架 6, 上支架 5, 上移动支架 6与上支架 5之间为活动连接; 下支架 16和下移动支架 12, 它 们之间也为活动连接; 上主轴 3和下主轴 18, 分别装在上、 下主轴 3、 18与上、 下支 架 5、 16之间的弹簧; 弧形上飞轮 9和下飞轮 19; 上棘轮机构 1和下棘轮机构 13; 分 别位于上、 下飞轮 9、 19上的铜片; 上连杆机构和下连杆机构; 上挂钩机构和下挂钩 机构。 上述电阻点焊电极延寿装置存在结构复杂、 体积大, 细部设计不尽合理, 例如: 步进计数装置不精确, 由此造成无法将其安装到相应的设备中。 A resistance spot welding electrode life extension device is disclosed in Chinese Patent Publication No. CN101081456, the disclosure of which is hereby incorporated by reference. The device comprises an upper moving bracket 6, an upper bracket 5, and an active connection between the upper moving bracket 6 and the upper bracket 5; a lower bracket 16 and a lower moving bracket 12, which are also movably connected; an upper spindle 3 and a lower spindle 18, Springs respectively mounted between the upper and lower spindles 3, 18 and the upper and lower brackets 5, 16; curved upper flywheel 9 and lower flywheel 19; upper ratchet mechanism 1 and lower ratchet mechanism 13; respectively located on the upper and lower flywheels 9 , copper plate on 19; upper link mechanism and lower link mechanism; upper hook mechanism and lower hook mechanism. The above-mentioned resistance spot welding electrode life extension device has a complicated structure, a large volume, and the detail design is not reasonable. For example, the step counting device is inaccurate, thereby making it impossible to install it into the corresponding device.
另外, 现有技术中, 不能解决持续为本装置供料的问题。 现有技术中的送料通常 需要工人在点焊工艺进行中更换金属片, 往往导致工作时间不必要的增加, 从而提高 了成本。 还有, 由于工人的个体差异及操作水平不同, 可导致装夹不合理的问题从而
造成装置功能不能顺利实现。 发明内容 In addition, in the prior art, the problem of continuously feeding the device cannot be solved. Feeding in the prior art generally requires the worker to replace the metal sheet during the spot welding process, which often results in an unnecessary increase in working time, thereby increasing the cost. Also, due to individual differences in workers and different levels of operation, problems can result in unreasonable clamping. The function of the device cannot be achieved smoothly. Summary of the invention
针对上述现有技术, 本发明提供一种具有自动送料机构的点焊电极保护装置, 可 以减少电极合金化、 磨损, 坑蚀和热疲劳等, 提高电极寿命, 从而实现保护电极的目 的。 In view of the above prior art, the present invention provides a spot welding electrode protection device having an automatic feeding mechanism, which can reduce electrode alloying, abrasion, pitting and thermal fatigue, etc., and improve electrode life, thereby achieving the purpose of protecting the electrode.
为了解决上述技术问题, 本发明具有自动送料机构的点焊电极保护装置予以实现 的技术方案是: 该具有自动送料机构的点焊电极保护装置由两组结构相同且分别固定 上、 下电极的保护单元构成, 所述保护单元包括支架体, 所述支架体的一端设置有一 与电极固定连接的且可上下移动的移动支架; 所述支架体的下部为 "门"字框架, 所 述 "门"字框架内设置有可上下移动的内支架, 所述 "门"字框架的底部设置底座, 所述底座的底面涂覆有绝缘涂层; 所述内支架内设有一横轴, 所述横轴上固连有一对 齿轮, 有可更换的金属片, 其两侧均为与所述一对齿轮配合的齿条; 所述一对齿轮上 设有棘轮棘爪机构, 所述棘轮棘爪机构中的棘爪通过拉簧与所述支架体连接, 拉簧的 拉力使棘爪时刻压在棘轮的轮齿上; 所述棘轮棘爪机构带动两个齿轮转动, 所述两个 齿轮带动金属片移动; 在所述金属板移动方向上的前后两段分别设有向上和向下弯折 的弯折板, 前后两端弯折板的角度吻合; 所述主轴上固定有一送料盒, 所述送料盒侧 壁的底部设有送料口, 所述送料口的宽窄与金属片的宽窄对应, 所述送料口的高度与 所述金属片的工作高度一致, 当上述一对齿轮带动金属片移动时, 由于金属片前后两 端弯折板的作用, 前面一片金属片带动后面一片金属片移动, 使金属片从送料盒中依 次被拉出。 In order to solve the above technical problem, the technical solution of the spot welding electrode protection device with the automatic feeding mechanism is: The spot welding electrode protection device with the automatic feeding mechanism is composed of two sets of the same structure and respectively fixing the upper and lower electrodes. The protection unit includes a bracket body, and one end of the bracket body is provided with a moving bracket fixedly connected to the electrode and movable up and down; the lower part of the bracket body is a "door" frame, and the "door" An inner bracket movable up and down is disposed in the frame, a bottom is disposed on a bottom of the "door" frame, and a bottom surface of the base is coated with an insulating coating; a horizontal axis is disposed in the inner bracket, and the horizontal axis is The upper fixed body has a pair of gears, and has a replaceable metal piece, both sides of which are racks that cooperate with the pair of gears; the pair of gears are provided with a ratchet pawl mechanism, and the ratchet pawl mechanism The pawl is connected to the bracket body by a tension spring, and the pulling force of the tension spring causes the pawl to momentarily press on the teeth of the ratchet; the ratchet pawl mechanism drives the two gears to rotate. The two gears move the metal sheet; the front and rear sections of the metal plate are respectively provided with bent plates which are bent upward and downward, and the angles of the front and rear bent plates are matched; the spindle is fixed a feeding box, a bottom of the side wall of the feeding box is provided with a feeding opening, the width of the feeding opening corresponds to the width of the metal piece, and the height of the feeding opening is consistent with the working height of the metal piece, when the pair When the gear moves the metal piece, due to the action of the bent plates at the front and rear ends of the metal piece, a piece of metal piece on the front side moves the metal piece behind, so that the metal piece is sequentially pulled out from the feeding box.
本发明具有自动送料机构的点焊电极保护装置, 其中, 所述支架体的上方为叉架 结构, 所述移动支架上设有通孔, 使其插装到所述支架体上, 所述移动支架的上下移 动是通过设置在支架体上部中间的主轴及套装在所述主轴上的压力弹簧和设置在所述 主轴上的限位结构来实现的; 所述移动支架上设有用来固定电极的装夹结构。 The spot welding electrode protection device of the present invention has an automatic feeding mechanism, wherein the upper side of the bracket body is a fork structure, and the moving bracket is provided with a through hole for inserting into the bracket body, the moving The up and down movement of the bracket is realized by a main shaft disposed in the middle of the upper portion of the bracket body, a pressure spring disposed on the main shaft, and a limiting structure disposed on the main shaft; the moving bracket is provided with a fixing electrode Clamping structure.
本发明具有自动送料机构的点焊电极保护装置, 其中, 所述棘轮棘爪机构包括具 有三级调整功能的棘轮组, 所述棘轮组包括三个棘轮及分别与三个棘轮对应的三个棘 爪, 将该棘轮组中的二级棘轮设为是可调换的二级棘轮, 从而形成不同的组配, 则可 实现在点焊过程中电极在金属片同一位置处打点数的任意可调。 具有三级调整功能的 棘轮组采用三级棘轮, 一级棘轮齿数为 10, 其中包括一个齿形较深的轮齿; 二级棘轮
的齿数为 8或 10, 其中包括两个对称分布的齿形较深的轮齿; 三级棘轮的齿数为 10; 当一级棘爪伸入到一级棘轮上齿形较深的轮齿, 与此同时, 二级棘爪才与二级棘轮接 触, 拨动二级棘轮转动; 当二级棘爪伸入到二级棘轮上齿形较深的轮齿时, 三级棘爪 才与三级棘轮接触拨动三级棘轮转动, 由于三级棘轮与所述一对齿轮之间为固连, 三 级棘轮带动一对齿轮同步转动, 进而带动金属片移动一个步长。 所述金属片为紫铜片, 所述紫铜片厚度为 0. 5-1. 2毫米。 The present invention has a spot welding electrode protection device with an automatic feeding mechanism, wherein the ratchet pawl mechanism comprises a ratchet set having a three-stage adjustment function, the ratchet set comprising three ratchets and three spines respectively corresponding to three ratchets The claws, the two-stage ratchets in the ratchet set are set as the adjustable second-stage ratchets, thereby forming different combinations, so that the number of points of the electrodes at the same position of the metal piece can be arbitrarily adjusted during the spot welding process. The ratchet set with three-stage adjustment function uses a three-stage ratchet, the number of primary ratchet teeth is 10, including one tooth with deeper teeth; the second ratchet The number of teeth is 8 or 10, including two symmetrically distributed teeth with deeper teeth; the number of teeth of the third-stage ratchet is 10; when the first-stage pawl extends into the tooth with deeper teeth on the primary ratchet, At the same time, the secondary pawl is in contact with the secondary ratchet, and the secondary ratchet is rotated; when the secondary pawl extends into the deeper tooth on the secondary ratchet, the third-stage pawl is only three The level ratchet contact toggles the three-stage ratchet rotation. Since the three-stage ratchet is fixedly connected with the pair of gears, the three-stage ratchet drives a pair of gears to rotate synchronously, thereby driving the metal piece to move by one step. 5毫米。 The metal sheet is a copper sheet, the thickness of the copper sheet is 0. 5-1. 2 mm.
与现有技术相比, 本发明的有益效果是: Compared with the prior art, the beneficial effects of the present invention are:
由于本发明具有自动送料机构的点焊电极保护装置中, 在电极与工件之间加入一 片金属片, 以金属片的消耗来代替电极的损耗。 经实验表明, 电极头除了对铜片有少 许物理摩擦时产生的划痕和实验最后阶段铜片被焊穿时电极粘上了少许的铝以外, 电 极几乎没有损坏的情况, 尤以采用紫铜的焊接质量比较好, 且不与电极反应, 因此, 能使电极几乎完全不受损耗, 电极零损耗, 从而解决了保护电极的技术问题。 本发明 装置的结构简单, 体积小, 易实施。 另外, 针对现有技术中存在的送料问题, 提供了 自动送料装置, 可使点焊工艺持续进行而无需人工换料, 从而降低了操作难度, 减少 了工艺时间, 使工作成本进一步降低。 附图说明 In the spot welding electrode protection device having the automatic feeding mechanism of the present invention, a metal piece is placed between the electrode and the workpiece, and the loss of the electrode is replaced by the consumption of the metal piece. Experiments have shown that the electrode head has scratches caused by a little physical friction on the copper sheet and a little aluminum is adhered to the electrode when the copper sheet is welded through in the final stage of the experiment, and the electrode is hardly damaged, especially using copper. The welding quality is relatively good and does not react with the electrode. Therefore, the electrode can be almost completely free from loss and the electrode is zero-depleted, thereby solving the technical problem of protecting the electrode. The device of the invention has a simple structure, a small volume and is easy to implement. In addition, in view of the feeding problem existing in the prior art, an automatic feeding device is provided, which enables the spot welding process to be continued without manual refueling, thereby reducing the operation difficulty, reducing the process time, and further reducing the working cost. DRAWINGS
图 1-1是现有技术中一种电极延寿装置与上电极相连部分的装配示意图; 图 1-2是从图 1-1后部看到的装置与上电极相连部分的装配示意图; Figure 1-1 is a schematic view showing the assembly of an electrode life extension device and an upper electrode in the prior art; Figure 1-2 is a schematic view showing the assembly of the device and the upper electrode as seen from the rear of Figure 1-1;
图 1-3是图 1-1中所示装置与下电极相连部分的装配示意图; Figure 1-3 is a schematic view showing the assembly of the device shown in Figure 1-1 and the lower electrode;
图 2-1 是本发明具有自动送料机构的点焊电极保护装置中一保护单元的主视剖视 图; Figure 2-1 is a front cross-sectional view showing a protection unit of the spot welding electrode protection device with an automatic feeding mechanism of the present invention;
图 2-2是图 1-1所示保护单元的俯视图; Figure 2-2 is a plan view of the protection unit shown in Figure 1-1;
图 2-3是图 1-1所示保护单元的左视图; Figure 2-3 is a left side view of the protection unit shown in Figure 1-1;
图 2-4是图 1-1所示保护单元上移动支架位于低点时的右视图; Figure 2-4 is a right side view of the protection unit shown in Figure 1-1 when the moving bracket is at a low point;
图 2-5是图 1-1所示保护单元、 上电极、 金属片及送料盒相连的装配示意图; 图 3-1是本发明中棘轮组中一级棘轮的轮廓示意图; 2-5 is a schematic view showing the assembly of the protection unit, the upper electrode, the metal piece and the feeding box shown in FIG. 1-1; FIG. 3-1 is a schematic view showing the outline of the first stage ratchet in the ratchet group of the present invention;
图 3-2是本发明中棘轮组中一种二级棘轮的廓示意图; 3-2 is a schematic view showing the outline of a secondary ratchet in the ratchet set of the present invention;
图 3-3是本发明中棘轮组中另一种二级棘轮的轮廓示意图; 3-3 is a schematic view showing the outline of another secondary ratchet in the ratchet set of the present invention;
图 3-4是本发明中棘轮组中三级棘轮的轮廓示意图。
图中主要附图标记的说明: 3-4 are schematic views of the outline of a three-stage ratchet in the ratchet set of the present invention. Description of the main reference symbols in the figure:
101—移动支架 102- -压力弹簧 103——支架体 101—Moving bracket 102--Pressure spring 103——Standing body
104——棘爪 105- -框架 106——防倒棘爪 104 - pawl 105 - - frame 106 - anti-falling pawl
107——一对齿轮 108- -弹簧片 109——主轴 107 - a pair of gears 108 - - spring piece 109 - spindle
191——限位结构 110- -夹圈 111——拉簧 191——Limited structure 110--Clamp ring 111-tension spring
112——紧固螺栓 114- -底座 141——一级棘轮 112——tightening bolt 114- - base 141——first level ratchet
142——二级棘轮 143- -三级棘轮 120——金属片 142——Secondary ratchet 143- -Three-stage ratchet 120——Metal sheet
130——上、 下电极 140- -送料盒 具体实施方式 130——Upper and lower electrodes 140--Feeding box
下面结合附图和具体实施方式对本发明作进一步详细地描述。 The invention is described in further detail below with reference to the drawings and specific embodiments.
本发明具有自动送料机构的点焊电极保护装置, 由两组结构相同且分别固定上、 下电极的保护单元构成。 下面以其中一个保护单元为例进行详细说明。 The spot welding electrode protection device with the automatic feeding mechanism of the invention is composed of two sets of protection units having the same structure and respectively fixing the upper and lower electrodes. The following is a detailed description of one of the protection units.
如图 2-3和图 2-4所示,所述保护单元包括支架体 103,所述支架体 103的上方为 叉架结构, 所述支架体 103的一端设置有一与电极 130固定连接的且可上下移动的移 动支架 101 ; 所述支架体 103的下部为 "门"字框架 105, 所述 "门"字框架 105内设 置有可上下移动的内支架 113, 所述 "门"字框架 105的底部设置底座 114, 所述底座 114的底面涂覆有绝缘涂层; 所述内支架 113内设有一横轴 116, 如图 2-1所示, 所述 移动支架 101上设有通孔, 使其插装到所述支架体 103上, 所述移动支架 101的上下 移动是通过设置在支架体 103上部中间的主轴 109及套装在所述主轴 109上的压力弹 簧 102和设置在所述主轴 109上的限位结构 191来实现的, 限位结构限定了移动支架 101上极限位置, 如图 2-1和图 2-2所示, 所述移动支架 101上设有用来固定电极 103 的装夹结构, 该装夹结构包括移动支架 101上的带有开口的夹圈 110和用来紧固该夹 圈的紧固螺栓部件 112。 As shown in FIG. 2-3 and FIG. 2-4, the protection unit includes a bracket body 103. The bracket body 103 is provided with a fork structure. One end of the bracket body 103 is fixedly connected to the electrode 130. The movable bracket 101 can be moved up and down; the lower portion of the bracket body 103 is a "door" frame 105, and the "door" frame 105 is provided with an inner bracket 113 movable up and down, and the "door" frame 105 is provided. The bottom of the base 114 is provided with an insulating coating; the inner bracket 113 is provided with a horizontal axis 116. As shown in FIG. 2-1, the moving bracket 101 is provided with a through hole. Inserted onto the bracket body 103, the up and down movement of the moving bracket 101 is through a main shaft 109 disposed in the upper middle portion of the bracket body 103, and a compression spring 102 fitted on the main shaft 109 and disposed on the main shaft The limit structure 119 on the 109 defines the limit position on the moving bracket 101. As shown in FIG. 2-1 and FIG. 2-2, the moving bracket 101 is provided with a device for fixing the electrode 103. Clip structure, the clamping structure includes a shift Clamping collar with an opening on the stand 101 for fastening the fastening bolt 10 and the clamp ring member 112.
如图 2-4所示, 在所述支架体 103下部的所述 "门"字框架 103内设置有一横轴 As shown in FIGS. 2-4, a horizontal axis is disposed in the "door" frame 103 at the lower portion of the bracket body 103.
113, 所述横轴 113上固连有一对齿轮 107, 并在一对齿轮 107之间设有可更换的金属 片 120, 所述金属片 120为紫铜片, 所述紫铜片厚度为 0. 5-1. 2毫米。 沿该金属片 120 长度的两侧上为带有与上述齿轮齿形一致的齿条, 在金属片 120移动方向上的两端部 分别设有向上及向下 45度角的弯折, 即在金属板 120移动方向上的前端设有向上的弯 折板, 在金属板 120移动方向上的后端设有向下的弯折板; 金属片 120存放于送料盒
140中,所述送料盒为金属盒,固定于主轴 109上,送料盒 140侧壁的底部设有送料口, 送料口的宽窄与金属片的宽窄对应, 由于, 每片金属片 120 的前后端分别设有向上和 向下, 且角度吻合的弯折板, 因此, 在具有自动送料机构的点焊电极保护装置工作过 程中, 当送出一金属片 120 时, 前面一片的弯折板恰好勾住后面一片的弯折板, 当上 述一对齿轮 107带动金属片 120移动时, 可以使得金属片 120从送料盒中依次被拉出, 为了防止齿轮倒转设置有防倒棘爪 106和弹片 108, 如图 2-1所示; 为了控制金属片 120的移动特征,在其中一齿轮的外侧设有棘轮棘爪机构,所述棘轮棘爪机构中的棘爪 104通过拉簧 111与所述支架体 103连接, 拉簧 111 的拉力使棘爪时刻压在棘轮 141 的轮齿上; 所述棘轮棘爪机构带动所述一对齿轮 107转动, 所述一对齿轮再带动金属 片 120移动。 所述棘轮棘爪机构包括具有三级调整功能的棘轮组, 所述棘轮组包括三 个棘轮 141、 142、 143及分别与三个棘轮对应的三个棘爪, 将该棘轮组设为具有可调 换的二级棘轮, 从而形成不同的组配, 则可实现在点焊过程中电极在金属片同一位置 处打点数的任意可调。 I. The thickness of the copper sheet is 0.5. The thickness of the copper sheet is 0.5. -1. 2 mm. A rack having a tooth shape conforming to the gear tooth shape is provided on both sides of the length of the metal piece 120, and both ends of the metal piece 120 in the moving direction are respectively bent at an angle of 45 degrees upward and downward, that is, The front end of the metal plate 120 in the moving direction is provided with an upwardly bent plate, and a rearward bent plate is provided at a rear end in the moving direction of the metal plate 120; the metal piece 120 is stored in the feeding box In 140, the feeding box is a metal box fixed on the main shaft 109. The bottom of the side wall of the feeding box 140 is provided with a feeding port, and the width of the feeding port corresponds to the width of the metal piece, because the front and rear ends of each piece of metal piece 120 There are respectively bent plates that are upward and downward, and the angles are matched. Therefore, during the operation of the spot welding electrode protection device with the automatic feeding mechanism, when a metal piece 120 is sent out, the front piece of the bent plate is just hooked. When the pair of gears 107 drive the metal piece 120 to move, the metal piece 120 can be pulled out from the feeding box in sequence. In order to prevent the gear from being reversed, the anti-falling pawl 106 and the elastic piece 108 are disposed. 2-1; in order to control the moving characteristics of the metal piece 120, a ratchet pawl mechanism is provided on the outer side of one of the gears, and the pawl 104 in the ratchet pawl mechanism passes through the tension spring 111 and the bracket body 103. The tension of the tension spring 111 causes the pawl to momentarily press against the teeth of the ratchet wheel 141; the ratchet pawl mechanism drives the pair of gears 107 to rotate, and the pair of gears further drive the metal piece 120 to move. The ratchet pawl mechanism includes a ratchet set having a three-stage adjustment function, the ratchet set includes three ratchets 141, 142, 143 and three pawls respectively corresponding to the three ratchets, and the ratchet set is set to have By changing the secondary ratchets to form different combinations, it is possible to arbitrarily adjust the number of dots of the electrodes at the same position of the metal piece during the spot welding process.
具有三级调整功能的棘轮组采用三级棘轮, 如图 3-1、 图 3-2、 图 3-3和图 3-4所 示, 一级棘轮 141齿数为 10, 包括一个齿形较深的轮齿; 二级棘轮 142的齿数为 8 (图 3-2 ) 或 10 (图 3-3), 其中包括两个对称分布的齿形较深的轮齿; 三级棘轮 143的齿 数为 10; 当一级棘爪伸入到一级棘轮 141上齿形较深的轮齿, 与此同时, 二级棘爪才 与二级棘轮 142接触, 拨动二级棘轮 142转动; 当二级棘爪伸入到二级棘轮 142上齿 形较深的轮齿时, 三级棘爪才与三级棘轮 143接触拨动三级棘轮 143转动, 由于三级 棘轮 143与所述一对齿轮 107之间为固连, 三级棘轮 143带动一对齿轮 107同步转动, 进而带动金属片 120移动一个步长。 当金属片 120移动时, 由于金属片前后两端弯折 板的作用, 会带动下一个金属片的移动。 The ratchet set with three-stage adjustment function uses a three-stage ratchet. As shown in Figure 3-1, Figure 3-2, Figure 3-3 and Figure 3-4, the primary ratchet 141 has a number of teeth of 10, including a deep tooth profile. The number of teeth of the secondary ratchet 142 is 8 (Fig. 3-2) or 10 (Fig. 3-3), including two symmetrically distributed teeth with deeper teeth; the number of teeth of the third stage ratchet 143 is 10. When the first-stage pawl protrudes into the tooth with deeper teeth on the first-stage ratchet 141, at the same time, the second-stage pawl comes into contact with the second-stage ratchet 142, and the second-stage ratchet 142 is rotated; When the claw protrudes into the tooth with deep tooth shape on the second ratchet 142, the third-stage pawl contacts the third-stage ratchet 143 to rotate the three-stage ratchet 143, because the three-stage ratchet 143 and the pair of gears 107 The three-stage ratchet 143 drives the pair of gears 107 to rotate synchronously, thereby driving the metal piece 120 to move by one step. When the metal piece 120 moves, the movement of the next metal piece is driven by the action of the bent plates at the front and rear ends of the metal piece.
本发明具有自动送料机构的点焊电极保护装置中保护单元的运动过程是: 将两个保护单元呈上下对称布置, 并将上、 下电极分别固定与各自的夹圈 110 中 夹紧, 并保证上、 下电极的中心轴线重合及两个保护单元中的主轴中心线重合, 分别 在两保护单元中插入金属片。 The movement process of the protection unit in the spot welding electrode protection device with the automatic feeding mechanism of the invention is: arranging the two protection units symmetrically up and down, and fixing the upper and lower electrodes respectively and clamping them in the respective clamping ring 110, and ensuring The central axes of the upper and lower electrodes coincide and the center lines of the spindles of the two protection units coincide, and metal sheets are inserted into the two protection units, respectively.
首先结合图 2-4和图 2-5, 并以上电极运动为例进行描述: 当上电极 130向下运动 时, 带动移动支架 101向下运动, 这时主轴 109上的的压力弹簧 102处于压缩状态, 并推动内支架 113向下运动。 内支架 113带动其上的棘轮组向下运动, 迫使一级棘爪 从原始随机插入的轮齿中移出。 当主轴 109 的向下运动停止时 (即当内支架底部与底
座 114接触时), 此时, 一级棘爪正好移动到一级棘轮的下一个齿轮的缝隙里, 而当电 极打完点后回收时, 上主轴 109由压力弹簧 102的弹力向上运动, 上棘轮机构也向上 运动, 一级棘爪正好卡在一级棘轮 141 的下一个轮齿缝隙里, 所以一级棘爪将推动一 级棘轮 141 沿圆周方向转动一个轮齿所对应的角度, 此时, 无论是内支架还是棘轮组 均回到原始高度。 First, referring to FIG. 2-4 and FIG. 2-5, and the above electrode movement is taken as an example for description: When the upper electrode 130 moves downward, the moving bracket 101 is moved downward, and the pressure spring 102 on the main shaft 109 is compressed. The state, and pushes the inner bracket 113 downward. The inner bracket 113 drives the ratchet assembly thereon to move downward, forcing the primary pawl to be removed from the original randomly inserted gear teeth. When the downward movement of the spindle 109 is stopped (ie when the bottom of the inner bracket is bottom and bottom) When the seat 114 is in contact, at this time, the first stage pawl just moves into the gap of the next gear of the first stage ratchet, and when the electrode is recovered after the point is finished, the upper spindle 109 is moved upward by the elastic force of the pressure spring 102, The ratchet mechanism also moves upward, and the first stage pawl is just caught in the next tooth gap of the primary ratchet 141, so the primary pawl will push the first ratchet 141 to rotate the angle corresponding to one tooth in the circumferential direction. Both the inner bracket and the ratchet set return to their original height.
同理, 下电极部分在运动时和上电极部分相似, 只是这时下电极是不动的, 下主 轴做先向下而后向上的运动, 其向下的力是由上电极向下运动时带来的, 当上电极与 上部保护单元中的金属片接触, 使上保护单元的底座接触到工件后并继续推动工件向 下运动; 下保护单元的支架体受力后会带动下主轴向下运动, 进而带动下保护单元中 的棘轮棘爪机构运动, 而向上运动时和上保护单元中的移动支架的运动相同。 运动过 程中棘轮棘爪机构的运动和上保护单元中的相同, 不再赘述。 Similarly, the lower electrode portion is similar to the upper electrode portion during movement, except that the lower electrode is not moved at this time, and the lower spindle is moved downwardly and backwardly, and the downward force is brought by the downward movement of the upper electrode. When the upper electrode is in contact with the metal piece in the upper protection unit, the base of the upper protection unit contacts the workpiece and continues to push the workpiece downward; the support body of the lower protection unit forces the lower spindle to move downward. , in turn, the ratchet pawl mechanism in the lower protection unit is moved, and the movement of the moving bracket in the upper protection unit is the same as the upward movement. The movement of the ratchet pawl mechanism during the movement is the same as in the upper protection unit and will not be described again.
在上面的棘轮棘爪机构中已明确了可以打若干种不同的点数, 这里以 50点为例, 如图 3-1、 图 3-3、 图 3-4所示, 棘轮组由三级棘轮构成, In the above ratchet pawl mechanism, it has been clarified that several different points can be played. Here, taking 50 points as an example, as shown in Fig. 3-1, Fig. 3-3, Fig. 3-4, the ratchet set is composed of three stages of ratchets. Composition,
一级棘轮和二级棘轮上均有较深的轮齿, 只有当一级棘爪中较长的爪遇到深齿时, 二级棘爪中较短的齿才能伸进二级棘轮的轮齿中, 并带动二级棘轮沿圆周运动, 而当 二级棘爪中较短的爪伸进二级棘轮较深的齿间隙中时, 最短的三级棘爪才能伸进三级 棘轮的轮齿中, 并带动所述的一对齿轮 107转动, 也就是说棘轮组中不同的一级棘轮 与二级棘轮及三级棘轮配合会变化出不同的打点数。 Both the primary and secondary ratchets have deeper teeth. Only when the longer claws of the primary pawl encounter deep teeth, the shorter of the secondary pawls can reach the secondary ratchet wheel. In the teeth, and drive the secondary ratchet to move circumferentially, and when the shorter claw of the secondary pawl reaches into the deeper interdental gap of the secondary ratchet, the shortest three-staged pawl can reach the third-stage ratchet wheel. In the tooth, the pair of gears 107 are driven to rotate, that is to say, different first-stage ratchets in the ratchet group cooperate with the second-stage ratchet and the three-stage ratchet to change different number of hits.
当图 3-1和图 3-3所示的一级棘轮、 二级棘轮与图 3-4所示的三级棘轮组合时, 当一级棘轮每转动一周时, 带动二级棘轮转动一个齿, 而当二级棘轮每转动 5次才能 带动三级棘轮转动一个齿, 因此, 在电极打点时体现为电极每打 50点与一对齿轮 107 啮合的金属片才移动一个较小的距离; 由图 3-1、图 3-2和图 3-4所示的三个棘轮构成 的棘轮组, 当 0—级棘轮每转动一周时带动二级棘轮转动一个齿, 而当二级棘轮每转 动 4次才能带动三级棘轮转动一个齿, 因此, 在电极打点时体现为电极每打 40点, 与 所述的一对齿轮啮合的金属片才移动一个较小的距离。 When the first-stage ratchet and the second-stage ratchet shown in Figure 3-1 and Figure 3-3 are combined with the three-stage ratchet shown in Figure 3-4, when the primary ratchet rotates once, the secondary ratchet rotates one tooth. When the secondary ratchet rotates 5 times, the three-stage ratchet can rotate one tooth. Therefore, when the electrode is struck, the metal piece that is engaged with the pair of gears 107 every 50 points of the electrode moves a small distance; The ratchet group consisting of three ratchets shown in Fig. 3-1, Fig. 3-2 and Fig. 3-4, when the 0-stage ratchet rotates once, drives the second ratchet to rotate one tooth, and when the second ratchet rotates by 4, Only then can the three-stage ratchet rotate one tooth. Therefore, when the electrode is struck, it is reflected that the electrode is moved 40 points, and the metal piece engaged with the pair of gears is moved by a small distance.
尽管上面结合图对本发明进行了描述, 但是本发明并不局限于上述的具体实施方式, 上述的具体实施方式仅仅是示意性的, 而不是限制性的, 本领域的普通技术人员在本 发明的启示下, 在不脱离本发明宗旨的情况下, 还可以作出很多变形, 这些均属于本 发明的保护之内。
Although the present invention has been described in connection with the drawings, the present invention is not limited to the specific embodiments described above, and the specific embodiments described above are merely illustrative and not restrictive, and those of ordinary skill in the art Many variations are possible without departing from the spirit of the invention, and these are within the protection of the invention.
Claims
1.一种具有自动送料机构的点焊电极保护装置, 由两组结构相同且分别固定上、 下电极的保护单元构成; 1. A spot welding electrode protection device having an automatic feeding mechanism, comprising two sets of protection units having the same structure and respectively fixing upper and lower electrodes;
所述保护单元包括支架体(103),所述支架体(103)的一端设置有一与电极(130) 固定连接的且可上下移动的移动支架 (101 ); The protection unit includes a bracket body (103), and one end of the bracket body (103) is provided with a movable bracket (101) fixedly connected to the electrode (130) and movable up and down;
所述支架体 (103) 的下部为 "门"字框架 (105 ), 所述 "门"字框架 (105 ) 内 设置有可上下移动的内支架(113), 所述"门"字框架(105) 的底部设置底座(114), 所述底座 (114) 的底面涂覆有绝缘涂层; 所述内支架 (113) 内设有一横轴 (116), 所述横轴 (116) 上固连有一对齿轮 (107), 有可更换的金属片 (120), 其两侧均为与 所述一对齿轮 (107) 配合的齿条; 所述一对齿轮 (107) 上设有棘轮棘爪机构, 所述 棘轮棘爪机构中的棘爪(104)通过拉簧(111 )与所述支架体(103)连接, 拉簧(111 ) 的拉力使棘爪时刻压在棘轮的轮齿上; 所述棘轮棘爪机构带动两个齿轮转动, 所述两 个齿轮带动金属片 (120) 移动; 其特征在于: The lower part of the bracket body (103) is a "door" frame (105), and the "door" frame (105) is provided with an inner bracket (113) movable up and down, the "door" frame ( The base of the base is provided with a base (114), the bottom surface of the base (114) is coated with an insulating coating; the inner bracket (113) is provided with a horizontal axis (116), and the horizontal axis (116) is fixed There is a pair of gears (107) connected with a replaceable metal piece (120) on both sides of the rack that cooperates with the pair of gears (107); the pair of gears (107) are provided with ratchet spines a pawl mechanism, the pawl (104) in the ratchet pawl mechanism is coupled to the bracket body (103) by a tension spring (111), and the pulling force of the tension spring (111) causes the pawl to momentarily press on the teeth of the ratchet wheel The ratchet pawl mechanism drives the two gears to rotate, and the two gears move the metal piece (120) to move;
在所述金属板 (120) 移动方向上的前后两段分别设有向上和向下弯折的弯折板, 前后两端弯折板的角度吻合; 所述主轴 (109) 上固定有一送料盒 (140), 所述送料盒 ( 140)侧壁的底部设有送料口, 所述送料口的宽窄与金属片的宽窄对应, 所述送料口 的高度与所述金属片(120)的工作高度一致,当上述一对齿轮(107)带动金属片(120) 移动时, 由于金属片前后两端弯折板的作用, 前面一片金属片带动后面一片金属片移 动, 使金属片 (120) 从送料盒 (140) 中依次被拉出。 The front and rear sections of the metal plate (120) are respectively provided with bent plates which are bent upward and downward, and the angles of the bent plates at the front and rear ends are matched; a feeding box is fixed on the main shaft (109). (140), a bottom of the side wall of the feeding box (140) is provided with a feeding opening, the width of the feeding opening corresponds to the width of the metal piece, the height of the feeding opening and the working height of the metal piece (120) Consistently, when the pair of gears (107) drive the metal piece (120) to move, due to the action of the bent plates at the front and rear ends of the metal piece, a piece of metal piece on the front side moves the metal piece behind, so that the metal piece (120) is fed from the material. The box (140) is pulled out in order.
2.根据权利要求 1所述的一种具有自动送料机构的点焊电极保护装置, 其特征在 于, 所述支架体 (103 ) 的上方为叉架结构, 所述移动支架 (101 ) 上设有通孔, 使其 插装到所述支架体 (103) 上, 所述移动支架 (101 ) 的上下移动是通过设置在支架体 The spot welding electrode protection device with an automatic feeding mechanism according to claim 1, wherein the bracket body (103) has a fork structure above, and the moving bracket (101) is provided a through hole, which is inserted into the bracket body (103), and the moving bracket (101) is moved up and down by being disposed in the bracket body
( 103) 上部中间的主轴 (109) 及套装在所述主轴 (109) 上的压力弹簧 (102 ) 和设 置在所述主轴 (109) 上的限位结构来实现的; 所述移动支架 (101 ) 上设有用来固定 电极的装夹结构。 (103) an upper middle main shaft (109) and a pressure spring (102) fitted to the main shaft (109) and a limit structure provided on the main shaft (109); the moving bracket (101) ) A clamping structure for fixing the electrodes is provided.
3.根据权利要求 1所述的一种具有自动送料机构的点焊电极保护装置, 其特征在 于, 所述棘轮棘爪机构包括具有三级调整功能的棘轮组, 所述棘轮组包括三个棘轮及 分别与三个棘轮对应的三个棘爪, 将该棘轮组中的二级棘轮设为是可调换的二级棘轮, 从而形成不同的组配, 则可实现在点焊过程中电极在金属片同一位置处打点数的任意 可调。 3 . The spot welding electrode protection device with an automatic feeding mechanism according to claim 1 , wherein the ratchet pawl mechanism comprises a ratchet set having a three-stage adjustment function, and the ratchet set includes three ratchet wheels. And three pawls corresponding to the three ratchets respectively, and the second ratchet in the ratchet set is set as the adjustable secondary ratchet. Thereby forming different combinations, it is possible to arbitrarily adjust the number of dots of the electrode at the same position of the metal piece during the spot welding process.
4.根据权利要求 3所述的一种具有自动送料机构的点焊电极保护装置, 其特征在 于, 具有三级调整功能的棘轮组采用三级棘轮, 其中, 一级棘轮(141 )齿数为 10, 包 括一个齿形较深的轮齿; 二级棘轮(142) 的齿数为 8或 10, 包括两个对称分布的齿形 较深的轮齿; 三级棘轮 (143) 的齿数为 10; 当一级棘爪伸入到一级棘轮 (141 ) 上齿 形较深的轮齿, 与此同时, 二级棘爪才与二级棘轮 (142) 接触, 拨动二级棘轮 (142) 转动; 当二级棘爪伸入到二级棘轮 (142) 上齿形较深的轮齿时, 三级棘爪才与三级棘 轮(143)接触拨动三级棘轮(143)转动, 由于三级棘轮(143)与所述一对齿轮(107) 之间为固连, 三级棘轮(143)带动一对齿轮(107) 同步转动, 进而带动金属片 (120) 移动一个步长。 The spot welding electrode protection device with an automatic feeding mechanism according to claim 3, wherein the ratchet group having the three-stage adjustment function adopts a three-stage ratchet, wherein the first-stage ratchet (141) has a number of teeth of 10 , including a tooth with deeper teeth; the number of teeth of the second ratchet (142) is 8 or 10, including two symmetrically distributed teeth with deeper teeth; the number of teeth of the third-stage ratchet (143) is 10; The first-stage pawl extends into the tooth with deeper teeth on the first-stage ratchet (141), and at the same time, the second-stage pawl comes into contact with the second-stage ratchet (142), and the second-stage ratchet (142) is rotated; When the secondary pawl protrudes into the tooth with deeper teeth on the secondary ratchet (142), the third-stage pawl contacts the third-stage ratchet (143) and the three-stage ratchet (143) rotates, due to the third-stage The ratchet wheel (143) is fixedly connected with the pair of gears (107), and the three-stage ratchet wheel (143) drives a pair of gears (107) to rotate synchronously, thereby driving the metal piece (120) to move by one step.
5.根据权利要求 1所述的一种具有自动送料机构的点焊电极保护装置, 其特征在于, 所述金属片 (120) 为紫铜片, 所述紫铜片厚度为 0. 5-1. 2毫米。 5-1. 2。 The thickness of the copper sheet is 0. 5-1. 2 Millimeter.
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US10668557B2 (en) | 2013-12-06 | 2020-06-02 | Nippon Steel Corporation | Spot welding electrode and welding apparatus and welding method using same |
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CN102672335B (en) * | 2012-05-04 | 2014-07-16 | 天津大学 | Spot-welding electrode protecting device with automatic feeding mechanism |
CN109263354B (en) * | 2018-10-25 | 2023-10-20 | 维融科技股份有限公司 | Automatic change system card equipment |
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CN101081456A (en) * | 2007-07-10 | 2007-12-05 | 天津大学 | Device for prolonging the lifetime of resistance spot welding electrode |
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CN102672335A (en) * | 2012-05-04 | 2012-09-19 | 天津大学 | Spot-welding electrode protecting device with automatic feeding mechanism |
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JPS52143669A (en) * | 1976-05-24 | 1977-11-30 | Sesupa Insutorumentsu Isutabur | Support body and method of transferring support body |
US4169587A (en) * | 1976-05-24 | 1979-10-02 | Vespa Instruments Establishment | Process for transferring supports, and supports for use therein |
CN101081456A (en) * | 2007-07-10 | 2007-12-05 | 天津大学 | Device for prolonging the lifetime of resistance spot welding electrode |
CN102019499A (en) * | 2010-12-22 | 2011-04-20 | 天津大学 | Spot welding electrode protector |
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