公开(公告)号：US4246223A

公开(公告)日：1981-01-20

申请号：US962206

申请日：1978-11-20

申请人： Willis C. Patterson

发明人： Willis C. Patterson

IPC分类号： B29C51/08 ,  B29C51/14 ,  B31F1/00 ,  B29D7/24

CPC分类号： B29C51/14 ,  B29C51/087 ,  B31F1/0077

摘要： A deep compartment tray includes compartments separated by dividers which extend to between one-third and substantially the full depth of the tray. The tray is constructed from sheet material, such as polyester coated paper milk carton stock by cutting blanks from the stock, scoring the blank in regions where formation of wrinkles is to be avoided to induce the paper stock to fold and form as required, and pre-forming and finally forming the blank into the tray between a single set of dies. The pre-forming step and the forming step are conducted by a first female die defining the tray cavities or compartments, and surrounded by a first draw pad region, and a second male die including bosses or land areas in the compartment regions and recesses where the tray dividers are to be formed. The male die includes a set of cavities, one in each of the tray compartment regions. The cavities slidably receive plungers or inserts which are movably mounted in the cavities and are spring-urged to their fully projected positions in the cavities. A second draw pad surrounds the male die, and is mounted for resistive movement relative to the male die. As the male die approaches the female die in a forming stroke, the first and second draw pads capture the blank. At the same time, the plungers contact the blank surface. As the forming stroke continues, the plungers pre-form the blank in the compartment regions between divider ridges on the female die while tension is maintained on a perimetral flange portion of the blank by the draw pads. The plungers finally bottom out, capturing the blank between themselves and the compartment surfaces of the female die. The remaining parts of the male die continue downward, finally forming the tray.

摘要翻译： 深的隔间托盘包括由分隔件隔开的隔间，其延伸到托盘的三分之一和大体上整个深度之间。 托盘由片材材料制成，例如聚酯涂布纸牛奶纸箱，通过从坯料中切割坯料，在避免形成皱纹的区域中对坯料进行划痕以诱导纸张根据需要折叠并形成， 并且最终在一组模具之间形成坯料进入托盘。 预成型步骤和成形步骤由限定托盘空腔或隔间并由第一拉伸垫区域包围的第一阴模进行，并且第二阳模包括在隔室区域中的凸起或凸起区域和凹部， 将形成托盘分配器。 阳模包括一组空腔，其中一个在每个托盘室区域中。 空腔可滑动地接收柱塞或插入件，其可移动地安装在空腔中并且被弹簧推动到其在空腔中的完全突出位置。 第二拉伸垫围绕阳模，并且被安装成相对于阳模的阻力运动。 当阳模在成形行程中接近阴模时，第一和第二吸盘捕获空白。 同时，柱塞与空白面接触。 当成型冲程持续时，柱塞预先在母模上的分隔脊之间的隔室区域中形成坯料，同时通过拉片将毛坯保持在坯料的周边凸缘部分上。 柱塞最后出来，捕获它们之间的空白和阴模的隔室表面。 阳模的其余部分继续向下，最后形成托盘。

公开(公告)号：US4149841A

公开(公告)日：1979-04-17

申请号：US890269

申请日：1978-03-27

申请人： Willis C. Patterson

发明人： Willis C. Patterson

IPC分类号： B29C51/00 ,  B27D1/08 ,  B29C45/00 ,  B29C51/08 ,  B29C51/14 ,  B29C51/30 ,  B31B50/59 ,  B65D1/36 ,  B29C17/00

CPC分类号： B65D1/36 ,  B29C51/087 ,  B29C51/14

摘要： A deep compartment tray includes compartments separated by dividers which extend to between one-third and substantially the full depth of the tray. The tray is constructed from sheet material, such as polyester coated paper milk carton stock. The pre-forming step and the forming step for the tray are conducted by a first female die defining the tray cavities or compartments, and surrounded by a first draw pad region, and a second male die including bosses or land areas in the compartment regions and recesses where the tray dividers are to be formed. The male die includes a set of cavities, one in each of the tray compartment regions. The cavities slidably receive plungers or inserts which are movably mounted in the cavities and are spring-urged to their fully projected positions in the cavities. A second draw pad surrounds the male die, and is mounted for resistive movement relative to the male die.

摘要翻译： 深的隔间托盘包括由分隔件隔开的隔间，其延伸到托盘的三分之一和大体上整个深度之间。 托盘由片材制成，如聚酯涂布纸牛奶纸箱。 托盘的预成型步骤和形成步骤由限定托盘空腔或隔间并被第一拉伸垫区域包围的第一阴模进行，并且包括在隔室区域中的凸起或陆地区域的第二阳模，以及 要形成托盘分隔器的凹槽。 阳模包括一组空腔，其中一个在每个托盘室区域中。 空腔可滑动地接收柱塞或插入件，其可移动地安装在空腔中并且被弹簧推动到其在空腔中的完全突出位置。 第二拉伸垫围绕阳模，并且被安装成相对于阳模的阻力运动。