公开(公告)号：US3816052A

公开(公告)日：1974-06-11

申请号：US27257772

申请日：1972-07-17

Applicant: PACKAGE MACHINERY CO

Inventor： SCHOPPEE L ,  MEAGHER J

IPC: B29C45/00 ,  B29C51/00 ,  B29C51/10 ,  B29C51/18 ,  B29C51/30 ,  B29C51/38 ,  B30B1/26 ,  B29C3/00

CPC classification number: B30B1/26 ,  B29C51/38 ,  Y10T74/1556 ,  Y10T74/18176 ,  Y10T74/18976

Abstract: A press or platen operating mechanism for a thermoforming machine wherein the platens and their associated molds are closed and opened on a sheet of plastic material by cam operated linkages. The linkages include elements extending from a cam for each platen and the cam and linkages provide for adjustment of the timing and stroke of each platen independently of the other platen. The linkages also include rack and pinion driven toggle links so arranged that the force holding the platens and molds in closed relationship bears upon the machine frame and not upon any guide rods or tie bars generally associated with such relatively movable platens.

Abstract translation: 用于热成型机的压力机或压板操作机构，其中压板及其相关联的模具通过凸轮操作的连接件在塑料材料片上封闭和打开。 连杆包括从每个压板的凸轮延伸的元件，并且凸轮和连杆提供了独立于另一压板的每个压板的定时和行程的调节。 连杆还包括齿条和小齿轮驱动的肘节连杆，其被布置成使得保持压板和模具处于封闭关系的力承载在机架上，而不是通常与通常与这种相对可移动的压板相关联的任何导杆或连杆上。