CN103328137A - 带调温通道模具部件的制造方法及该方法制造的模具部件 - Google Patents

带调温通道模具部件的制造方法及该方法制造的模具部件 Download PDF

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CN103328137A
CN103328137A CN2012800064746A CN201280006474A CN103328137A CN 103328137 A CN103328137 A CN 103328137A CN 2012800064746 A CN2012800064746 A CN 2012800064746A CN 201280006474 A CN201280006474 A CN 201280006474A CN 103328137 A CN103328137 A CN 103328137A
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mold component
passage
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cooling duct
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S.达拉格索伦森
O.瑟克尔森
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    • B22F5/00—Manufacture of workpieces or articles from metallic powder characterised by the special shape of the product
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    • B—PERFORMING OPERATIONS; TRANSPORTING
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    • B22—CASTING; POWDER METALLURGY
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    • B22F7/00—Manufacture of composite layers, workpieces, or articles, comprising metallic powder, by sintering the powder, with or without compacting wherein at least one part is obtained by sintering or compression
    • B22F7/06—Manufacture of composite layers, workpieces, or articles, comprising metallic powder, by sintering the powder, with or without compacting wherein at least one part is obtained by sintering or compression of composite workpieces or articles from parts, e.g. to form tipped tools
    • B—PERFORMING OPERATIONS; TRANSPORTING
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    • B22F7/00—Manufacture of composite layers, workpieces, or articles, comprising metallic powder, by sintering the powder, with or without compacting wherein at least one part is obtained by sintering or compression
    • B22F7/06—Manufacture of composite layers, workpieces, or articles, comprising metallic powder, by sintering the powder, with or without compacting wherein at least one part is obtained by sintering or compression of composite workpieces or articles from parts, e.g. to form tipped tools
    • B22F7/08—Manufacture of composite layers, workpieces, or articles, comprising metallic powder, by sintering the powder, with or without compacting wherein at least one part is obtained by sintering or compression of composite workpieces or articles from parts, e.g. to form tipped tools with one or more parts not made from powder
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C33/00—Moulds or cores; Details thereof or accessories therefor
    • B29C33/02—Moulds or cores; Details thereof or accessories therefor with incorporated heating or cooling means
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C33/00—Moulds or cores; Details thereof or accessories therefor
    • B29C33/38—Moulds or cores; Details thereof or accessories therefor characterised by the material or the manufacturing process
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
    • B29C45/17—Component parts, details or accessories; Auxiliary operations
    • B29C45/72—Heating or cooling
    • B29C45/73—Heating or cooling of the mould
    • B29C45/7331—Heat transfer elements, e.g. heat pipes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C33/00—Moulds or cores; Details thereof or accessories therefor
    • B29C33/38—Moulds or cores; Details thereof or accessories therefor characterised by the material or the manufacturing process
    • B29C33/3828—Moulds made of at least two different materials having different thermal conductivities
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
    • B29C45/17—Component parts, details or accessories; Auxiliary operations
    • B29C45/26—Moulds
    • B29C45/2673—Moulds with exchangeable mould parts, e.g. cassette moulds
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
    • B29C45/17—Component parts, details or accessories; Auxiliary operations
    • B29C45/72—Heating or cooling
    • B29C45/73—Heating or cooling of the mould
    • B29C45/7312—Construction of heating or cooling fluid flow channels
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B33—ADDITIVE MANUFACTURING TECHNOLOGY
    • B33Y—ADDITIVE MANUFACTURING, i.e. MANUFACTURING OF THREE-DIMENSIONAL [3-D] OBJECTS BY ADDITIVE DEPOSITION, ADDITIVE AGGLOMERATION OR ADDITIVE LAYERING, e.g. BY 3-D PRINTING, STEREOLITHOGRAPHY OR SELECTIVE LASER SINTERING
    • B33Y80/00—Products made by additive manufacturing
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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Abstract

一种用于注射成型工具的模具部件，所述模具部件由烧结金属以烧结工艺配置，所述烧结工艺包括连续烧结多层烧结金属，由此模具部件的冷却通道和外模具被完全或部分形成，并且其中，模具部件的外部形状包括配置成使其面向型腔的模具表面，并且其中，模具部件进一步包括基本上线性的通道，所述通道从模具部件的模具表面延伸直到冷却通道；并且其中，在基本上线性通道中配置有销，所述销由导热系数高于烧结金属的导热系数的材料配置。

Description

带调温通道模具部件的制造方法及该方法制造的模具部件
技术领域
本发明涉及用于制造注射成型工具的模具部件的方法，所述模具部件由粉末烧结金属配置，通过连续烧结多层烧结金属，使得模具部件的冷却通道和外模具完全或部分形成，并且其中，所述模具部件具有外模具，所述外模具包括配置为使其面向注射成型工具的型腔的模具表面、和背离注射成型模具中的型腔的第二表面，并且其中，所述模具部件进一步包括至少一个冷却通道，所述至少一个冷却通道具有至少两个开口，所述至少两个开口配置在所述模具部件的第二表面上。
背景技术
用于注射成型的工具已知由多种配置，并且，能够制造这样的成型工具是持续的挑战，所述成型工具在复杂几何形状的特别塑料工件中提供成型选项，同时保持用于注射成型工艺的工具成本和周期较低。
因而，从例如美国专利No.5753274可知一种用于制造复杂金属工件的方法，其中复杂工件通过在彼此顶上烧结很多薄烧结金属层而被逐层构造，并且其中，各层通过激光或作用而被局部加热，使得烧结金属层在期望位置处熔化。
因而那些方法，如例如从美国专利No.7261550所知的，能够进行用于注射成型工具的模具部件的制备。
特别地，在具有非常复杂几何形状的情况下，因而能够实现冷却通道的位置可被优化，并且模具部件的机加工被最小化，因此用于模具部件生产的制造成本可被最小化，同时注射成型工艺的周期被最小化。
发明内容
据此，本发明的目的是提供用于注射成型工具的模具部件，其中烧结工艺的那些优点被使用以获得进一步的优点。
根据独立权利要求1和7中限定的本发明，该目的被实现的原因在于，模具部件具有相对长且薄的芯，能够使用烧结工艺，所述模具部件进一步包括基本上线性的通道，所述线性的通道从模具部件的模具表面延伸直到冷却通道，并且其中，在基本上线性的通道中配置销，所述销由导热系数高于烧结金属的导热系数的材料制成，并且使得所述销封闭所述基本上线性的通道，并且使得所述销的一端的至少一部分延伸靠近或进入冷却通道。
为了提供良好的热传导性，所述基本上线性的通道特别有利地通过机加工工艺配置，例如对模具部件的钻孔。
但是，所述基本上线性的通道可以有利地以与形成所述冷却通道和模具部件外部所用的烧结工艺相同的烧结工艺完全或部分形成，使得进一步的机加工完全或部分多余。但是，在本文中，如果通过烧结工艺形成的基本上线性的通道进一步通过机加工工艺（例如通过钻孔）处理，则仍可获得有效的热传导性。
特别方便地，销的面对模具部件的模具表面的端部通过柱塞、螺钉或适用于该目的的其他元件隐藏在模具表面下方；但是在本发明的优选实施例中，以此构造模具部件：在将所述销安装在基本上线性的通道中之后，通过多层烧结金属的连续烧结，进一步添加烧结金属，所述烧结方式使得基本上线性的通道（因此销）被完全封闭在模具部件中。
根据优选实施例，所述销由金属制成，所述金属包括铜或铝。
显然，本方法特别适合模具部件的制备，例如芯部件，所述芯部件可被安装在注射成型工具中；但是根据本发明，可制造完整的注射成型工具。
附图说明
图1是以剖视图的形式显示的安装在普通注射成型工具中的根据本发明的模具部件的示例性简图。
图2是显示根据本发明的未完成的不带安装销的模具部件的第一实施例的剖视图。
图3是显示图2中所示的具有销的模具部件的剖视图。
具体实施方式
因而，图1显示了显示出包括两个部件1、2的注射成型工具的示例性简图，并且其中一个部件1具有形成型腔3的一部分的内表面8，并且其中第二部件2配置为具有模具部件4，该模具部件4形成注射成型工具中的芯。
模具部件4（其在该图中以阴影线显示）包括板状部件5，型芯6构建在其上，型芯6通过连续烧结粉末烧结金属的薄层而形成，所述金属例如为钢，比如从上面提到的美国专利No.5753274和No.7261550所知。
板状部件5可由一整块板材料配置，所述整块板材料例如通过机加工形成，或其可以与型芯6相同的方式以烧结工艺等同地生产。
由此型芯7包括模具表面7，所述模具表面7与注射成型工具的一个部件1上的内表面8一起形成型腔3的全部或部分。除了模具表面7，模具部件4还包括第二表面11，其背离型腔3，并且其中布置有用于冷却通道12的两个开口。
在模具部件4（其包括型芯6和板状部件5）中，如上面提到的，提供有用于冷却介质流动通过的冷却通道12，并且根据本发明，提供有销9，所述销9由导热系数高于用于构建模具部件4、板状部件5或型芯6的烧结金属导热系数的材料构成。
如从图1显示的，销9完全封闭在型芯6中，其中在型芯的上端处，靠近模具表面7，通过烧结提供有覆盖物（lid）10，使得覆盖物10覆盖销9，并且构成模具表面7的一部分。
现在，图2和3显示了在第一和第二制备工艺之后的图1中所示的模具部件4，图1显示了烧结的型芯6、以及也可以以烧结工艺形成的板状部件。这里将显示出，在第一制备工艺之后，型芯被设置有直线通道13，所述直线通道13可非常简单地在烧结工艺过程中形成，但是其也可随后在型芯6已经以烧结工艺被制备之后通过钻出通道13来形成。
现在图3显示了与图2中所示的相同的型芯6，但是这里的销9已经被插入，以使销9的一端基本上与型芯6上的模具表面对准，之后，其可再次经受进一步的烧结工艺，使得最终的型芯6以图1中所示的那样完成，其中销9被封闭在烧结的型芯6中。
显然，本发明可因而被与具有很多不同配置的模具部件结合使用，而不偏离本发明的基本原理，并且例如，可使模具部件包括比图中所示的一个更多的销，并且销9可以取向为与冷却通道12方向不同，使得可以建立模具部件6的均匀冷却，而与模具部件6的形状无关。

Claims (10)

1.一种用于制造注射成型工具的模具部件的方法，所述模具部件由烧结金属配置，并且具有外模具，所述外模具包括模具表面和第二表面，所述模具表面配置为使得其面向注射成型工具的型腔，第二表面背离注射成型工具中的型腔，并且其中，所述模具部件进一步包括至少一个冷却通道，所述至少一个冷却通道具有至少两个开口，所述至少两个开口配置在所述模具部件的第二表面上，所述方法包括以下步骤：
a.通过多层烧结金属的连续烧结，构建模具部件，使得模具部件的冷却通道和外模具被完全或部分形成；
b．形成基本上线性的通道，所述通道从模具部件的模具表面延伸，直到冷却通道；
c.在基本上线性的通道中安装销，所述销由导热系数高于烧结金属的导热系数的材料配置，使得所述销封闭所述基本上线性的通道，并使得销的一端的至少一部分延伸靠近冷却通道延伸或延伸进入所述冷却通道。
2.根据权利要求1所述的方法，其特征在于，所述基本上线性的通道由机加工工艺配置，所述机加工工艺例如对模具部件钻孔。
3.根据权利要求1所述的方法，其特征在于，所述基本上线性的通道在与形成冷却通道和模具部件的外部所用的烧结工艺相同的烧结工艺中完全或部分形成。
4.根据权利要求3所述的方法，其特征在于，在烧结工艺中形成的所述基本上线性的通道进一步通过机加工工艺处理，所述机加工工艺例如钻孔。
5.根据前述权利要求中的一项或多项所述的方法，其特征在于，在将所述销安装在基本上线性的通道中之后，所述模具部件进一步通过多层烧结金属材料的连续烧结而被供应烧结金属，所述多层烧结金属材料的连续烧结的方式使得，烧结金属的覆盖物跨基本上线性的通道的开口形成在其模具表面上，并且使得基本上线性的通道被完全封闭在所述模具部件中。
6.根据前述权利要求中一项或多项所述的方法，其特征在于，所述销由金属制成，所述金属包括铜或铝。
7.一种用于注射成型工具的模具部件，所述模具部件在烧结工艺中由烧结金属配置，所述烧结工艺包括多层烧结金属的连续烧结，使得模具部件的冷却通道和外模具被完全或部分形成，并且其中，模具部件的外模具包括模具表面和第二表面，所述模具表面配置成使其面向注射成型工具的型腔，所述第二表面背离注射成型工具中的型腔，并且其中，所述模具部件进一步包括至少一个冷却通道，所述至少一个冷却通道具有至少两个开口，所述至少两个开口配置在所述模具部件的第二表面上，其特征在于，所述模具部件进一步包括基本上线性的通道，该基本上线性的通道从所述模具部件的模具表面延伸直到冷却通道，并且其中，在基本上线性的通道中配置销，所述销由导热系数高于烧结金属的导热系数的材料制成，并且使得所述销封闭基本上线性的通道，并使得所述销的一端的至少一部分延伸靠近冷却通道或延伸进入冷却通道中。
8.根据权利要求7所述的模具部件，其特征在于，所述销由铜基或铝基金属配置。
9.根据权利要求7或8所述的模具部件，其特征在于，所述销的相对端，即背离冷却通道的端部，被完全封闭在由烧结金属配置的模具部件中。
10.一种注射成型工具，其包括根据权利要求7到9中的一项或多项所述的模具部件。
CN201280006474.6A 2011-01-25 2012-01-24 带调温通道模具部件的制造方法及该方法制造的模具部件 Active CN103328137B (zh)

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