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    Plasticating screw with two helical threads of varying pitches and a plasticating apparatus comprising this
    1.
    发明公开
    Plasticating screw with two helical threads of varying pitches and a plasticating apparatus comprising this 有权
    具有不同节距的两个螺纹航班和增塑单元与该塑化螺杆

    公开(公告)号：EP2204272A1

    公开(公告)日：2010-07-07

    申请号：EP08425811.0

    申请日：2008-12-22

    申请人： M.R.S. Italia S.r.l.

    发明人： Sant'Elia, Francesco

    IPC分类号： B29C47/60 ,  B29C47/62 ,  B29C47/64

    CPC分类号： B29C47/625 ,  B29C45/60 ,  B29C47/0009 ,  B29C47/60 ,  B29C47/6043 ,  B29C47/6075 ,  B29C47/6081 ,  B29C47/62

    摘要： A plastication screw (1) comprises a shank (2) extending along a rectilinear axis (3), a feeding region (4) to supply a product to be plasticated, a plastication region (5) placed immediately downstream of the feeding region (4), relative to a main feeding direction (S) of the product along the axis (3) of the shank (2), at least one primary thread (7) extending in a helical development around the shank (2) at least in the plastication region (5), following a predetermined winding direction (V), and at least one secondary thread (10) extending in a helical development around the shank (2) in the same way as said predetermined winding direction (V), in at least part of the plastication region (5). The primary thread (7) and the secondary thread (10) each have a varying pitch (p 1 , p 2 ). The pitch variation (p 2 ) of the secondary thread (10) is greater than the pitch variation (p 1 ) of the primary thread (7).

    摘要翻译： 塑化螺旋（1）包括一个柄部（2）沿直线轴延伸（3），供给区（4），以提供产品被塑化，塑化区域（5）放置在紧邻供给区的下游（4- ），相对于所述产物的沿轴线的主进给方向（S）（3）的柄部（2）的至少一个主螺纹（7）的螺旋形发展围绕柄部（2）至少在延伸 （5）之后的预定卷绕方向（V）在围绕所述柄的螺旋发展（2）延伸以相同的方式，作为所述预定的卷绕方向（V）在塑化区，和至少一个副螺纹（10） 塑化区的至少一部分（5）。 主螺纹（7）和副螺纹（10），每个具有不同的间距（P 1，P 2）。 副螺纹（10）的桨距变化（P 2）比主螺纹的螺距的变化（第1）的情况下（7）。

    A mixing device for extruders
    4.
    发明公开
    A mixing device for extruders 有权
    Eine Mischvorrichtungfüreinen挤出机

    公开(公告)号：EP1459867A1

    公开(公告)日：2004-09-22

    申请号：EP03425153.8

    申请日：2003-03-13

    申请人： M.R.S. Italia S.r.l.

    发明人： The designation of the inventor has not yet been filed

    IPC分类号： B29C47/62 ,  B29C47/64

    CPC分类号： B29C47/60 ,  B29C47/0009 ,  B29C47/62 ,  B29C47/625

    摘要： A mixing device comprises a cylindrical body (14) to be terminally engaged with an extrusion screw (2) and carrying at least one primary mixing thread (15) and at least one secondary mixing thread (16) having a crest diameter (d 3 ) smaller than the crest diameter (d 1 ) of the primary mixing thread (15). The primary mixing thread (15) has a helical extension in the same direction as that of the secondary mixing thread (16), to delimit at least one primary flow channel (17) and at least one secondary flow channel (18) that are substantially parallel. The primary mixing thread (15) further has, on its crest (19), communication grooves (20) between the primary (17) and secondary (18) flow channels.

    摘要翻译： 混合装置包括与挤出螺杆（2）末端接合并承载至少一个初级混合螺纹（15）的圆筒体（14）和具有更小的波峰直径（d3）的至少一个次级混合螺纹（16） 比主混合螺纹（15）的波峰直径（d1）大。 主混合螺纹（15）在与第二混合螺纹（16）的方向相同的方向上具有螺旋延伸，以限定至少一个主流动通道（17）和至少一个二次流动通道（18），其基本上 平行。 主混合螺纹（15）在其顶部（19）上还具有在初级（17）和次级（18）流动通道之间的连通槽（20）。