• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
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  • 引用文献
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  • 优先权
    • 专利摘要:
    Method for designing the ejection rod system for an injection mold comprising: creating a grid of flat nodes (nk) on a plane perpendicular to the movement of the mold cavity; determine the points (pij) of the piece (m ') corresponding to the intersection with a line (rt) perpendicular to the plane passing through each node (nk); calculate the thickness (eij) corresponding to each point (pij); identify the points where they exist (pijr) and where there are no (pijv) thickness changes; determine as points (pijexp) candidates those points (pijv) whose first surrounding surface does not contain any point (pijr); calculate the number of points (pijr) contained in a second surface surrounding each point (pijexp), where the second surface is greater than the first surface; and select as points (pijexpo) of expulsion those points (pijexp) whose number of points (pijr) contained in the second surface constitutes a local maximum. (Machine-translation by Google Translate, not legally binding)
    公开号:ES2595099A1
    申请号:ES201631252
    申请日:2016-09-27
    公开日:2016-12-27
    发明作者:Jorge Manuel MERCADO COLMENERO；Cristina MARTÍN DOÑATE；Miguel Ángel RUBIO PARAMIO；Jesús María PÉREZ GARCÍA
    申请人:Universidad Politecnica de Madrid；Universidad de Jaen；
    IPC主号:
    专利说明:

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    Fig. 9 shows a representation of the nodes Pijv and Pijr on Ʃ ’.
    Fig. 10 shows the location of the Pijexp points.
    5 Fig. 11 shows the representation of the Pijexp points.
    Fig. 12 shows the procedure for locating ejectors on Ʃ ’.
    Fig. 13 shows an example of the estimation of the number of Pijr nodes per Pijexp node.
    10 Fig. 14 shows the concentration of Pijr nodes per Pijexp node indicated in grayscale in an analysis with precision λ / 2 and where the ejection points are represented by white spheres on the M ’piece.
    15 PREFERRED EMBODIMENT OF THE INVENTION
    In the following, the present invention is described in more detail with reference to the attached figures.
    20 Initial data
    The procedure described in this document takes three data as input:
    1) A discrete geometry of a piece M ’that is formed by a set of
    25 triangular flat elements and nodes, as shown in Fig. 1b. In this specific example, the discrete geometry of part M ’has been obtained by a digital scanning process of a real part M represented in Fig. 1a. In any case, as mentioned earlier in this document, it would also be possible to obtain the discrete geometry of the M ’piece from a
    30 geometry of the M part generated by CAD in continuous B-Rep format.
    2) A set of surfaces Σ ’in discrete format in a preferred embodiment belonging to part M’ that will be moldable by the lower mold cavity, figure 2.
    35 3) A value λ that determines the precision of the two-dimensional nodal mesh (distance 9
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    权利要求:
    Claims (1)
    [1]
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    同族专利:
    公开号 | 公开日
    ES2595099B2|2017-05-04|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    US5641448A|1996-03-11|1997-06-24|National Research Council Of Canada|Method of producing plastic injection molds for prototype parts|
    ES2206303T3|1999-09-24|2004-05-16|Moldflow Corporation|METHOD AND APPLIANCE FOR MODELING THE INJECTION OF A FLUID IN THE CAVITY OF A MOLD.|
    US20030126038A1|2001-12-27|2003-07-03|The Protomold Company, Inc.|Automated quoting of molds and molded parts|
    WO2010127772A2|2009-05-07|2010-11-11|Magma Giessereitechnologie Gmbh|Simulation of ejection after mold filling|
    法律状态:
    2017-05-04| FG2A| Definitive protection|Ref document number: 2595099 Country of ref document: ES Kind code of ref document: B2 Effective date: 20170504 |
    优先权:
    申请号 | 申请日 | 专利标题
    ES201631252A|ES2595099B2|2016-09-27|2016-09-27|Procedure for the design of the ejection rod system for a mold|ES201631252A| ES2595099B2|2016-09-27|2016-09-27|Procedure for the design of the ejection rod system for a mold|
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