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    • 78. 发明申请
    • METHOD AND APPARATUS FOR DEEP-DRAWING A TRAY FROM SHEET MATERIAL
    • 方法和装置从板材中深入一张纸盘
    • WO2016059516A1
    • 2016-04-21
    • PCT/IB2015/057700
    • 2015-10-08
    • STORA ENSO OYJ
    • RÄSÄNEN, JariNEVALAINEN, KimmoLINDELL, HenryTANNINEN, PanuMATTHEWS, SamiHILTUNEN, MariKYLLIAINEN, Outi
    • B29C51/08B31B1/25B31B43/00B65D1/26B31F1/00B32B38/12
    • B31F1/0077B31B1/25B31B50/592B31B70/00B31B2160/10B31B2201/223B31B2201/25B31B2203/084B65D1/26B65D1/34
    • The invention relates to a method and anapparatus for deep-drawing a tray(1) froma blank ofsheet material(2).The blank is provided with score lines, which determine the location of wrinkles formed in the process.The apparatuscomprises a female moulding tool(3), which comprises a cavity(7)for forming the tray bot- tom outwardly,a male moulding tool(4), which comprises a plunger(11)for form- ing the tray bottom inwardly, the plunger being movable with respect to the cavity for forming the tray, andclamps(6, 15)with an interface for holding the sheet ma- terial and forming a tray rim flange. According to the inventionby laterally distanc- ingat least one ofthe moulding tools (3, 4) from the sheet material leeway is pro- vided for free forming so that wrinklingof the tray side wallsis achieved in a con- trolled manner.Spacer plates (13) may be positioned behind the plunger (11), to adjust its position in relation to thecavity (7) of thefemale moulding tool (3). The cavity may have a separate bottom plate(8)and spacer plates(9)therebelow, or screw means may be provided foradjusting the distance ofthe bottom of the cavi- ty fromthe clamp interfaceand thereby varying the depth of the tray.
    • 本发明涉及一种用于从片材材料(2)的坯料深拉一个托盘(1)的方法和装置。该坯件设有刻痕线,其确定在该过程中形成的皱纹的位置。该装置包括一个母模具 (3),其包括用于向外形成托盘的空腔(7),阳模制工具(4),其包括用于向内形成托盘底部的柱塞(11),柱塞可相对于 到用于形成托盘的空腔,以及用于夹持材料的接口的夹具(6,15),并形成托盘边缘凸缘。 根据本发明,通过横向分离,至少一个来自片材余料的成型工具(3,4)被提供用于自由成形,从而以受控的方式实现了托盘侧壁的起皱。隔板(13) 可以位于柱塞(11)的后面,以调节其相对于女性成型工具(3)的凹部(7)的位置。 空腔可以在其下方具有单独的底板(8)和间隔板(9),或者可以提供螺旋装置用于调整空腔底部与夹具接口的距离,从而改变托盘的深度。