公开(公告)号：US06338623B1

公开(公告)日：2002-01-15

申请号：US09561760

申请日：2000-04-29

申请人： Richard A. Durrant

发明人： Richard A. Durrant

IPC分类号： B28B120

CPC分类号： B29C41/46 ,  B29C41/06

摘要： A rotational molding oven for forming an object from a mold. The oven includes a cavity for retaining the mold, a burner for heating the cavity and melting the resin and a device for rocking the mold between −45° and 45° from a horizontal plane. The rocking device is outside, extending into the cavity, maintaining the mold in the center of the cavity. The rocking device facilitates distribution of resin within the mold and improves thermal flow of heat within the cavity thereby increasing thermal efficiency and minimizing the size of the cavity. The rocking device includes a first track outside the cavity, a carriage assembly, a drive assembly connected to the carriage assembly and a guide assembly connected between the first track and carriage assembly for translating up and down the first track, causing the carriage assembly to move therewith and the mold to rock about the central axis of the cavity. The carriage assembly is positioned below the guide assembly at all points during translational movement. The drive assembly includes a spindle bearing connected to the carriage assembly and a spindle arm extending from the spindle bearing and through a side of the cavity for releasably connecting to the mold for rotating the mold through multiple complete 360° rotations in either a clockwise or counterclockwise direction. A cooling system consisting of exhaust fan, air intake damper and water spray is positioned in the cavity for cooling the mold containing the melted resin.

摘要翻译： 一种用于从模具形成物体的旋转成型炉。 烤箱包括用于保持模具的空腔，用于加热空腔并熔化树脂的燃烧器以及用于使模具与水平面在-45度和45度之间摇摆的装置。 摆动装置在外部，延伸到空腔中，将模具保持在空腔的中心。 摆动装置有利于树脂在模具内的分布并且改善腔内热的热流，从而提高热效率并使空腔的尺寸最小化。 摇摆装置包括腔外部的第一轨道，滑架组件，连接到滑架组件的驱动组件和连接在第一轨道和滑架组件之间的引导组件，用于使第一轨道上下平移，使滑架组件移动 并且模具围绕空腔的中心轴线摇摆。 托架组件在平移运动期间的所有点处定位在导向组件的下方。 驱动组件包括连接到托架组件的主轴轴承和从主轴轴承延伸并通过空腔的侧面的主轴臂，用于可释放地连接到模具，用于通过顺时针或逆时针方向的多次完整360°旋转来旋转模具 方向。 由排风扇，进气阻尼器和喷水器组成的冷却系统位于空腔中，用于冷却含有熔融树脂的模具。

公开(公告)号：US06604931B2

公开(公告)日：2003-08-12

申请号：US09845973

申请日：2001-04-30

申请人： Richard A Durrant

发明人： Richard A Durrant

IPC分类号： B29C4106

CPC分类号： B29C41/06 ,  B29C37/006 ,  B29C41/46 ,  B29C41/52

摘要： A rotational molding oven for forming an object from a mold containing resin therein. The oven includes a cavity receiving the mold therein and a combustion chamber for providing heat inside of the cavity. A spool is rotatively positioned within the cavity, the sides of which spool substantially form the sides of the cavity, and a drive tube engages the mold and extends between first and second flanged disks of the spool. A first motor is positioned outside the cavity and rotates the spool and a second motor is positioned outside the cavity and rotates the mold within the spool. Heat in the cavity melts the resin within the mold and rotating the spool and mold by the first and second motors causes the melted resin to be evenly distributed throughout the mold. The drive tube may be selectively positioned at a peripheral edge or at a center of the spool.

摘要翻译： 一种用于从其中含有树脂的模具形成物体的旋转成型炉。 烤箱包括在其中容纳模具的空腔和用于在空腔内部提供热量的燃烧室。 阀芯被旋转地定位在腔体内，其侧面的阀芯基本上形成腔的侧面，并且驱动管接合模具并且在阀芯的第一和第二凸缘盘之间延伸。 第一马达定位在腔体外部并使线轴旋转，并且第二马达位于腔体外部并使模具在线轴内旋转。 空腔中的热量使模具内的树脂熔化并且通过第一和第二电动机使卷轴和模具旋转，使熔融的树脂均匀分布在整个模具中。 驱动管可以选择性地定位在卷轴的周边边缘或中心处。