WO2013020496A1 - 电动多方位金属粉末压射成型机 - Google Patents

电动多方位金属粉末压射成型机 Download PDF

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Publication number
WO2013020496A1
WO2013020496A1 PCT/CN2012/079757 CN2012079757W WO2013020496A1 WO 2013020496 A1 WO2013020496 A1 WO 2013020496A1 CN 2012079757 W CN2012079757 W CN 2012079757W WO 2013020496 A1 WO2013020496 A1 WO 2013020496A1
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Prior art keywords
main board
electric
mold
metal powder
injection
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PCT/CN2012/079757
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English (en)
French (fr)
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刘军
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Liu Jun
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
    • B22F3/00—Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sintering; Apparatus specially adapted therefor ; Presses and furnaces
    • B22F3/22—Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sintering; Apparatus specially adapted therefor ; Presses and furnaces for producing castings from a slip
    • B22F3/225—Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sintering; Apparatus specially adapted therefor ; Presses and furnaces for producing castings from a slip by injection molding
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
    • B22F3/00—Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sintering; Apparatus specially adapted therefor ; Presses and furnaces
    • B22F3/004—Filling molds with powder

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  • the invention relates to a metal powder injection molding machine, in particular to an electric multi-directional metal powder injection which is capable of quickly opening and closing a mold by using electric power as a power, and is suitable for producing high-precision and complicated high-melting-point metal parts. Forming Machine.
  • Powder metallurgy forming technology the basic process is: firstly, the solid powder and the organic binder are uniformly kneaded, and then heated and plasticized, pressed into the cavity by the powder metallurgy molding machine to form and solidify, and then removed.
  • the binder sintered and densely obtained the final product.
  • the product has the characteristics of high precision, uniform structure, excellent performance, low production cost and complex three-dimensional shape. It is widely used in electronic information engineering, biomedical devices, office equipment, automobiles, machinery, hardware, weapons and aerospace industries. Therefore, it is widely believed that the development of this technology will lead to a revolution in the forming and processing technology of parts, and is known as "the hottest part forming technology of today" and "forming technology of the 21st century".
  • Materials that can be used for injection molding are very broad, such as carbon steel, alloy steel, tool steel, refractory alloys, hard alloys, titanium alloys, high specific gravity alloys, and the like.
  • the traditional powder metallurgy molding machine has two molds, one of which is a fixed mold and a movable mold.
  • the movable mold is reciprocated along the guide column under the driving of the oil cylinder, and the function of closing the mold and opening the mold is completed, and only one mold opening direction is obtained.
  • this method is commonly used in powder metallurgy molding.
  • it still has many shortcomings, such as high proportion of finished products and scraps, slow production speed (relative to all-round mold metallurgy molding machine), easy to produce burrs, high mold manufacturing costs, and high energy consumption. More importantly, it is extremely difficult to produce small, precise and three-dimensionally complex parts, and the production cost and mold cost are extremely high.
  • the object of the present invention is to overcome the deficiencies of the above-mentioned technologies and provide an electric multi-directional metal powder injection molding machine with high production efficiency, simple operation, high efficiency, stable production, high product quality, environmental protection, low equipment manufacturing and low cost of use.
  • the technical solution adopted by the present invention to solve the technical problem is: a machine base body on which a main board and four sets of electric motor guiding devices are arranged, and the center line of the central hole of the main board is symmetrical axis, arranged in an order of 90 degrees and equiangular.
  • the heated, flowing metal powder material is injected into the cavity of the sliding mold and solidified under pressure to form the desired part.
  • the main board includes a cooling system for lowering the temperature of the main board; the front side of the main board is used for fixing the electric guiding mode device; the four guiding columns are installed around the center hole of the main board, and the 'ten' word chute mold assembly passes through the positioning sleeve and The guide post is accurately positioned and fixed on the center hole of the main board; the back of the main board is used to install the relevant components of the injection system; the hole in the middle part of the main board is used to fit the nozzle of the injection device to the mold carried in the 'Ten' sliding block mold base on.
  • the electric guided mold device is composed of a mounting plate, an electric drive, a connecting block, and the like; the shaft of the electric drive is connected with each of the slider molds, and the slider mold is placed in the chute of the 'ten' mold frame, and is driven by the electric drive.
  • the linear motion of the shaft makes a reciprocating linear sliding in the chute, completing the function of closing the mold and opening the mold.
  • the injection motion system is composed of a set of slide rail devices mounted on the back of the main board and an electric drive, and the injection machine assembly is mounted on the slide rail device and advanced and retracted along the slide rail by the action of the electric drive.
  • the purpose of the nozzle on the injection machine to abut and leave the mold gate.
  • the control system includes means for detecting the open and closed positions of the sliding mold, which is achieved by detecting the position of the electric drive shaft.
  • the mechanical structure of the electric multi-directional metal powder injection molding machine can conveniently install, replace and adjust electric drive devices and mold related components.
  • each slider mold of the electric multi-directional metal powder injection molding machine is driven by the electric drive device, the mold is closed according to the set closing process, and then the injection system enters the injection step, and the injection machine is driven by the electric drive. Acting along the slide rail, so that the nozzle on the injection machine abuts the position of the mold gate; under the action of another electric drive device, the injection screw has high speed and high pressure, and has been mixed and heated in the storage chamber.
  • the fluid metal powder material is injected into the cavity of the mold through the nozzle, and after holding and cooling, the mold is opened in a set order, and the product is sent to the barrel through the demolding and blowing mechanism, and the next one starts. cycle.
  • the process is simple, stable and efficient.
  • Various temperature sensors and position sensors in the control system detect the position signals of each component and the temperature signals of the injection system in real time, and transmit these signals to the control system.
  • the control system realizes the coordinated action of various components and mechanisms of the system according to a pre-programmed program. .
  • the invention has the beneficial effects that the electric multi-directional metal powder injection molding machine greatly improves the production efficiency of the powder metallurgy product, makes the operation simpler, safer, more efficient and environmentally friendly, improves the production stability and the quality of the product, and reduces the product.
  • the manufacturing cost is suitable for the production of high-precision, geometrically complex powder metallurgy products.
  • all electric drives are used, which reduces the manufacturing, use and maintenance costs of the equipment and further improves the precision of the products.
  • Fig. 1 is a side cross-sectional view of the present invention.
  • Fig. 2 is a front elevational view showing the components of the electric mold guiding device mounted on the main board and the molds connected to each other in a mold opening state.
  • Fig. 3 is a front elevational view showing the components of the motor-guided device mounted on the main board and the molds connected to each other in a mold clamping state.
  • the electric multi-directional metal powder injection molding machine has a machine body 11 integrally formed with the structural frame 11a, and a power and control system is provided inside the machine body (it is not the subject of the present invention, so only For implementation of the application note), a main board 1, a cooling tube 10a is placed in the slot of the main board and sealed by the cover 10, the main board 1 is fixed on the base body 11 and the structural frame 11a, four sets of electric guiding device and cross A chute mold frame or the like is mounted on the front surface of the main board 1.
  • the injection exercise system is composed of an injection machine assembly 12 (which is not the subject of the present invention, and therefore is only described herein for implementation), a slide rail device 13, a displacement electric drive 15 and the like.
  • the material enters the material of the barrel from the hopper 14 on the injection machine assembly and is mixed, heated and homogenized under the action of the injection machine; the injection screw is driven by the thrust of the electric drive inside the injection machine, with high speed and high pressure.
  • the fluid metal powder in the storage chamber is injected into the cavity of the mold through a nozzle, and the melt is cooled and solidified under pressure.
  • the injection machine assembly 12 is mounted on the rail assembly 13 and reciprocates along the slide rail 13 under the action of the displacement electric drive 15 to advance or retreat the injection machine assembly and ensure that the nozzles on the injection machine assembly pass
  • the center hole of the main plate 1 is in close contact with the mold to generate an injection seat pressure capable of closing the melt.
  • an installed electric guided mold device is shown; the electric guided mold device is composed of a mounting plate 2a, an electric drive 2, a connecting block 3, and the like; and four sets of electric guiding devices 2 are provided with a main plate 1
  • the center line of the center hole is an axis of symmetry, arranged in a 90 degree equiangular order, and is mounted on the front surface of the main board; the 'ten' word chute mold frame is fixed on the main board 1 through the guide post 5, and the slider mold 8 is placed in the cross
  • the chutes of the chute mold base 7 are respectively connected to the shafts of the respective electric drives 2 by the connecting blocks 3 and the pins 4.
  • the screw 5a locks the cover 7a and the cross slide formwork 7 to the main plate via the guide post 5, and ensures the precise sliding position of the slider die 8. In this way, the action of the shaft of the electric drive 2 directly drives the slider mold to complete the opening-closing motion.
  • the position detecting device 9 is configured to detect the opening and closing operations of the sliding mold; the position detecting device 16 is configured to detect the forward and backward movements of the injection machine assembly, and the signal obtained by the position detecting device is sent to the control system of the machine, thereby realizing Step control.
  • the electric drive maintains a considerable pressure at this time to resist the instantaneous pressure expansion generated by the cavity during the injection, so that the slider mold always maintains a stable mold clamping.
  • the state ensures that high quality products with accurate accuracy can be produced.
  • the electric multi-directional metal powder injection molding machine provided by the invention can meet the requirements of faster, higher pressure, higher precision, high complexity and high flexibility; greatly reducing the manufacture and use of the equipment. And maintenance costs, improve product production efficiency, production stability and product quality while reducing the cost of powder metallurgy products; making operation easier, safer, more efficient and environmentally friendly.

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  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Mechanical Engineering (AREA)
  • Powder Metallurgy (AREA)

Abstract

一种适于生产高精度、三维形状复杂的粉末冶金产品的电动多方位金属粉末压射成型机，其主要包括：一机座（11）、一主板（1）、四组电动导模装置、一"十"字滑槽模具总成，一注射装置总成；四组电动导模装置安装在机器的正面上，滑块模具（8）置入于"十"字模架的滑槽中，并于电力驱动器（2）的轴连接，藉由电力驱动器轴的直线运动完成关模和开模功能。机器的注射系统用于将混炼和加热的具有流动性的金属粉末材料注射到模具的模腔中，从而制造出高质量的高熔点金属材料零件。导模及注射装置全部使用电力作为动力，降低了设备的制造、使用和维护成本，降低了噪音及油污对环境的污染，同时提高了零件的生产效率和质量，使操作更简单、安全、高效和环保。

Description

电动多方位金属粉末压射成型机
技术领域
本发明涉及一种金属粉末压射成型机，特别涉及一种采用电力作为动力，可快速开合模的，适用于生产高精密度、结构复杂的高熔点金属零件的电动多方位金属粉末压射成型机。
背景技术
粉末冶金成型技术，其基本工艺过程是：先将固体粉末与有机粘结剂均匀混练后，在加热塑化状态下，通过粉末冶金成型机压射入模腔内固化成形，然后经脱除粘结剂、烧结致密得到最终产品。该产品具有精度高、组织结构均匀、性能优异、生产成本低、三维形状复杂等特点，广泛应用于电子信息工程、生物医疗器械、办公设备、汽车、机械、五金、兵器及航空航天等工业领域；因此，国际上普遍认为该技术的发展将会导致零部件成形与加工技术的一场革命，被誉为“当今最热门的零部件成形技术”和“21世纪的成形技术”。
可用于注射成型的材料非常广泛，如碳钢、合金钢、工具钢、难熔合金、硬质合金、钛合金、高比重合金等等。
传统的粉末冶金成型机有两个模具，其中一个定模，一个动模，动模在油缸的驱动下沿导柱作往复运动，完成关模和开模的功能，仅有一个开模方向。目前，粉末冶金成型普遍使用的是这种方式。但它仍然有许多缺点，例如：成品与废料的比重较高，生产速度慢（相对于全方位开模粉末冶金成型机），容易产生毛边，模具制造成本高，能源消耗大等等。更重要的是：在小型、精密和三维形状复杂的零件的生产上难度极大，生产成本和模具成本极高。另一方面，目前国内的各类型金属粉末压射成型机，大都采用液压或气动作为动力，其存在的主要问题有：（1）机械结构复杂，设备制造、使用及维护成本高；（2）模具的安装和拆卸繁琐，模具速度及填充速度不易控制，生产的稳定性及产品质量问题增多；（3）噪音大，液压油易泄漏，对环境影响大。
发明内容
本发明的目的是克服上述技术的不足，提供一种生产效率高，操作简单、高效，生产稳定，产品质量高，环保，设备制造及使用成本低的电动多方位金属粉末压射成型机。
本发明解决其技术问题所采用的技术方案是：一机座体，其上放置一主板，四组电动导模装置，以主板中心孔之中心线为对称轴，呈90度等角顺序排列，安装在主板的正面上；在主板正面中心孔周缘架设一‘十’字滑槽模具总成；一个注射运动系统，置于主板背面，用于在滑动模具处于关模位置时，将混炼和加热的具有流动性的金属粉末材料注射入滑动模具的模腔中，在压力下固化成型形成所需零件。
进一步，所述主板包括一个用于降低主板温度的冷却系统；主板正面用于固定电动导模装置；四根导柱安装在主板中心孔周缘，‘十’字滑槽模具总成通过定位套及导柱准确定位并固定在主板中心孔上；主板背面用于安装注射系统各相关组件；主板中间部位的孔用于将注射装置的喷嘴配合到承载于‘十’字滑槽模座中的模具上。
进一步，电动导模装置由安装板、电力驱动器、连接块等组成；电力驱动器的轴和各滑块模具连接，滑块模具置入于‘十’字模架的滑槽中，并藉由电力驱动器轴的直线运动而在滑槽中作往复直线滑动，完成关模和开模的功能。
进一步，所述注射运动系统由一组安装于主板背面的滑轨装置及电力驱动器组成，注射机总成安装在滑轨装置上并藉由电力驱动器的作用而沿滑轨前进和后退，从而达到使注射机上的喷嘴抵紧和离开模具浇口位置的目的。
控制系统包括：用于检测滑动模具的开模和关模位置的装置，它通过检测电力驱动器轴的位置来实现。
该电动多方位金属粉末压射成型机的机械结构，可方便的安装、拆换和调节电力驱动装置及模具相关组件等。
使用时，电动多方位金属粉末压射成型机的各滑块模具在电力驱动装置的直接驱动下，按设定的关模程序关闭模具，然后注射系统进入到注射步骤，注射机藉由电力驱动器的作用而沿滑轨前进，使注射机上的喷嘴抵紧模具浇口位置；压射螺杆在另一电力驱动装置的作用下，以高速、高压，将储料室内的已混炼和加热的具有流动性的金属粉末材料通过喷嘴注射到模具的模腔中，并在保压、冷却后，按设定的顺序开启模具，通过脱模和吹气机构将制品送入料桶，同时开始下一个循环。工艺简单、稳定、高效。
控制系统中的各种温度传感器、位置传感器实时检测各部件的位置信号和注射系统的温度信号，将这些信号传送到控制系统中，控制系统按事先编制的程序实现系统各部件和机构的协调动作。
本发明的有益效果是：该电动多方位金属粉末压射成型机大大提高粉末冶金产品的生产效率，使操作更简单、安全、高效和环保，提高了生产稳定性和产品的质量，降低产品的制造成本，适于生产高精密度、几何形状复杂的粉末冶金产品，同时，全部使用电力驱动，降低了设备的制造、使用及维护成本，进一步提高产品的精度。
附图说明
已经对本发明的特征进行了总体的说明，现在，将参考以说明优选实施例的方式给出的附图，其中。
图1是本发明的的侧面剖视图。
图2是开模状态下，安装在主板上的电动导模装置各组件及模具相互连接的主视图。
图3是合模状态下，安装在主板上的电动导模装置各组件及模具相互连接的主视图。
具体实施方式
现在参照图1，电动多方位金属粉末压射成型机有一机座体11，与结构框架11a连成整体，机座体内部设有动力及控制系统（其并非本新型诉求标的，故在此仅作实施应用说明），一个主板1，冷却管10a置入主板的槽内并由盖板10密封固定，该主板1固定于机座体11与结构框架11a上，四组电动导模装置及十字滑槽模架等被安装在主板1的正面。
一个注射运动系统被安装在主板1的背面。注射运动系统，由注射机总成12（其并非本新型诉求标的，故在此仅作实施应用说明）、滑轨装置13、位移电力驱动器15等组成。物料从注射机总成上的料斗14进入料筒物料并在注射机的作用下混炼、加热和均化；压射螺杆在注射机内部的电驱动器的推力作用下，以高速、高压，将储料室内的具有流动性的金属粉末材通过喷嘴注射到模具的模腔中，熔料在压力下冷却、固化定型。
注射机总成12安装在滑轨装置13上，在位移电力驱动器15的作用下，沿滑轨13作往复运动，实现注射机总成的前进或后退，并保证注射机总成上的喷嘴通过主板1的中心孔与模具紧密接触，产生能封闭熔体的注射座压力。
在图2至图3中，表示出了一个安装完成的电动导模装置；电动导模装置由安装板2a、电力驱动器2、连接块3等组成；四组电动导模装置2，以主板1中心孔之中心线为对称轴，呈90度等角顺序排列，安装在主板的正面上；‘十’字滑槽模架通过导柱5固定在主板1上，滑块模具8置入于十字滑槽模架7的滑槽中并分别与相应的电力驱动器2的轴由连接块3及销4连接。螺钉5a通过导柱5将盖板7a和十字滑槽模架7锁定在主板上，并确保滑块模具8的精确滑动位置。如此，电力驱动器2的轴的动作直接驱动滑块模具，完成开-合模动作。
位置检测装置9用于检测滑动模具的开模、关模动作；位置检测装置16用于检测注射机总成的前进、后退动作，位置检测装置得到的信号发送到机器的控制系统上，从而实现步骤控制。
当滑块模具经四组电动导模装置的动作达到合模位置时，此时各电力驱动器保持相当压力，以抵制注射时模腔产生的瞬间扩压，使滑块模具始终保持稳固的合模状态，确保能生产出精度准确的高品质产品。
综上所述，本发明提供的电动多方位金属粉末压射成型机，能适应更快速、更高压力、更高精度、高复杂性和高灵活性的要求；大大降低了设备的制造、使用及维护成本，提高产品的生产效率、生产稳定性和产品的质量的同时降低粉末冶金产品的成本；使操作更简单、安全、高效和环保。
以上所描述的仅用于举例说明本发明，不限于这里所表示和描述的内容，凡依照本发明的创意及特征而作的形式、部件布置及结构上的细节变化，则应属于本发明所请求保护的权利范围之内。

Claims (4)

  1. 一种电动多方位金属粉末压射成型机，包括一机座体，其特征是：其上放置一主板，四组电动导模装置，以主板中心孔之中心线为对称轴，呈90度等角顺序排列，安装在主板的正面上，在主板正面中心孔周缘架设一‘十’字滑槽模具总成；一个注射运动系统，置于主板背面，用于在滑动模具处于关模位置时，将混炼和加热的具有流动性的金属粉末材料注射入滑动模具的模腔中，在压力下固化成型形成所需零件。
  2. 根据权利要求1所述的电动多方位金属粉末压射成型机，其特征是：所述主板包括一个用于降低主板温度的冷却系统，主板正面用于固定电动导模装置；四根导柱安装在主板中心孔周缘，‘十’字滑槽模具总成通过定位套及导柱准确定位并固定在主板中心孔上；主板背面用于安装注射系统各相关组件；主板中间部位的孔用于将注射装置的喷嘴配合到承载于‘十’字滑槽模座中的模具上。
  3. 根据权利要求1所述的电动多方位金属粉末压射成型机，其特征是：电动导模装置包括安装板、电力驱动器、连接块；电力驱动器的轴和各滑块模具连接，滑块模具置入于‘十’字模架的滑槽中，并藉由电力驱动器轴的直线运动而在滑槽中作往复直线滑动，完成关模和开模的功能。
  4. 根据权利要求1所述的电动多方位金属粉末压射成型机，其特征是：所述注射运动系统由一组安装于主板背面的滑轨装置及电力驱动器组成,注射机总成安装在滑轨装置上并藉由电力驱动器的作用而沿滑轨前进和后退，从而达到使注射机上的喷嘴抵紧和离开模具浇口位置的目的。
PCT/CN2012/079757 2011-08-11 2012-08-07 电动多方位金属粉末压射成型机 WO2013020496A1 (zh)

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