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    • 2. 发明申请
    • APPARATUS FOR COMPRESSION MOULDING PREFORMS FOR SYNTHETIC RESIN CONTAINERS
    • 用于合成树脂容器的压缩成型预制件的装置
    • WO2005058572A1
    • 2005-06-30
    • PCT/EP2004/014164
    • 2004-12-13
    • SACMI COOPERATIVA MECCANICI IMOLA SOCIETA' COOPERATIVAPARRINELLO, FiorenzoZUFFA, ZenoBALBONI, Alessandro
    • PARRINELLO, FiorenzoZUFFA, ZenoBALBONI, Alessandro
    • B29C43/42
    • B29C43/50B29B11/12B29C33/303B29C33/44B29C43/08B29C43/42B29C49/02B29K2105/253B29L2001/00
    • The apparatus is for compression moulding synthetic resin preforms by pressure-inserting a mould punch (15) into a die cavity (20a) loaded with a charge (8). The preforms (9) comprise an upper neck (91) provided with projections and a hollow body (92) positioned below the neck (91). The apparatus is characterized in that each die comprises a first tubular element (51) which is axially fixed during the charge loading and moulding stage, and a second tubular element (52) which is axially movable telescopically relative to the first tubular element (51), to assume a first position in which it projects out of the first tubular element (51) to a maximum extent in order to increase the axial dimension of the die cavity (20a), and a second position in which it is retracted into the first tubular element (51) to a maximum extent in order to define the die cavity (20a) provided for the final moulding stage, and thrust means (80) to normally maintain said second tubular element (52) in its first position, the action of said thrust means (80) being overcome during the moulding stage.
    • 该装置用于通过将模具冲头(15)压入到装载有电荷(8)的模腔(20a)中来压缩模制合成树脂预制件。 预型件(9)包括设置有突起的上颈部(91)和位于颈部(91)下方的中空本体(92)。 该装置的特征在于,每个模具包括在充电装载和模制阶段期间轴向固定的第一管状元件(51)和可相对于第一管状元件(51)可轴向移动的第二管状元件(52) 为了增加模腔(20a)的轴向尺寸,第一位置将其从第一管状元件(51)突出到最大程度,并且第二位置被缩回到第一管状元件 管状元件(51)以最大限度地限定为最终模制台设置的模腔(20a)和推动装置(80),以将所述第二管状元件(52)正常地保持在其第一位置, 所述推力装置(80)在成型阶段被克服。
    • 7. 发明申请
    • METHOD AND GROUP FOR THE COMPRESSION MOLDING OF PREFORMS FOR CONTAINERS IN POLYMERIC MATERIAL
    • 聚合材料中容器预制件的压缩成型方法与组
    • WO2006040631A2
    • 2006-04-20
    • PCT/IB2005/002671
    • 2005-09-09
    • SACMI COOPERATIVA MECCANICI IMOLA SOCIETA' COOPERATIVABALBONI, AlessandroPARRINELLO, FiorenzoZUFFA, Zeno
    • BALBONI, AlessandroPARRINELLO, FiorenzoZUFFA, Zeno
    • B29C43/36B29C33/00B29C31/06B29C43/52
    • B29C43/52B29B2911/14713B29B2911/1498B29C33/0011B29C33/308B29C43/36B29C43/361B29C43/3642B29C2043/3652B29C2043/5841B29C2043/5883B29K2105/253B29L2031/565
    • The preform is formed by an upper neck which maintains unchanged its form in the final object and a hollow body, joined to the neck. The method foresees the insertion, within a matrix cavity, of a metered body of polymeric material whose mass is metered according to a reference value, and the subsequent pressure insertion of a punch within the matrix cavity until it closes the mold’s molding chamber, the punch conferring the shape to the inner surface of the preform and the matrix having an inner surface which confers the shape to the outer surface of the preform. According to the invention, in the molding of the preform, the error of the mass of the metered body with respect to the reference value is distributed in the hollow body, which undergoes a subsequent hot deformation until it achieves the final shape. In the mold, the matrix comprises at least one deformable wall (31) whose inner surface defines at least part of the inner surface of the matrix part intended to give form to the hollow body of the preform, said deformable wall (31) having, at least in part, a relatively thin thickness which permits it to be elastically deformed under the pressure of the polymeric material in the final preform molding step, thereby varying the thickness of the hollow body.
    • 预成型件由上颈部形成,上颈部保持其最终物体中的形状不变,以及与颈部接合的中空体。 该方法预见在矩阵空腔内插入聚合材料的计量体,其质量根据参考值进行计量,以及随后的冲头在基体腔内的压力插入,直到其关闭模具的模制室,冲头 将形状赋予预成型件的内表面,并且基体具有将形状赋予预成型件的外表面的内表面。 根据本发明,在预成型件的成型中,计量体的质量相对于基准值的误差分布在中空体中,中空体经历随后的热变形直到达到最终形状。 在模具中,基体包括至少一个可变形壁(31),其内表面限定矩阵部分的内表面的至少一部分,用于给予预制件的中空体的形状,所述可变形壁(31) 至少部分地具有相对薄的厚度,其允许其在最终预成型件成型步骤中在聚合物材料的压力下弹性变形,从而改变中空体的厚度。