Split frame for rotary vacuum mold unit
First Claim
1. A split auxiliary frame for a rotary vacuum molding thermoformer in which a plurality of identical main frames are arranged in a carousel to carry thermoplastic workpieces from a loading station to a heating station, thence to a vacuum molding station, and thence to an unloading station, wherein each of said main frames has a back frame member, a front frame member, and left and right side frame members together defining a horizontal rectangular configuration;
- the auxiliary frame comprising a center auxiliary frame member having ends removably mounted onto said front and back main frame members and disposed parallel to said side frame members;
a back transverse rail and a front transverse rail each having left and right ends adjustably mounted onto said left and right side frame members respectively and disposed parallel to said front and back frame members;
a first pair of longitudinal rails disposed to the left of said center auxiliary frame member and a second pair of longitudinal rails disposed to the right thereof, and each supported between said back and front transverse rails; and
clamping means disposed on said longitudinal rails and on said transverse rails, for removably clamping said workpieces in said frame as the workpieces are carried from the loading station to the unloading station.
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Accused Products
Abstract
An auxiliary double frame for a rotary vacuum mold unit or rotary thermoformer has a center auxiliary frame member and one or more auxiliary transverse frame members. The thermoformer has several identical frames that carry the plastic sheet workpieces from a load/unload station to a heat station or an oven, then to a vacuum molding station, and then to the load/unload station where the molded product is removed and replaced with a blank plastic workpiece. A center auxiliary frame member is mounted onto the front and back main frame members, and can be positioned on center or to the right or left of the center of the frame. Auxiliary transverse frame members are employed with the standard transverse clamping frame members. Pneumatic cylinders mount on the transverse clamping frame members and on the longitudinal frame members for operating pinbars. This system permits two or more molds to be employed at the same time.
35 Citations
7 Claims
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1. A split auxiliary frame for a rotary vacuum molding thermoformer in which a plurality of identical main frames are arranged in a carousel to carry thermoplastic workpieces from a loading station to a heating station, thence to a vacuum molding station, and thence to an unloading station, wherein each of said main frames has a back frame member, a front frame member, and left and right side frame members together defining a horizontal rectangular configuration;
- the auxiliary frame comprising a center auxiliary frame member having ends removably mounted onto said front and back main frame members and disposed parallel to said side frame members;
a back transverse rail and a front transverse rail each having left and right ends adjustably mounted onto said left and right side frame members respectively and disposed parallel to said front and back frame members;
a first pair of longitudinal rails disposed to the left of said center auxiliary frame member and a second pair of longitudinal rails disposed to the right thereof, and each supported between said back and front transverse rails; and
clamping means disposed on said longitudinal rails and on said transverse rails, for removably clamping said workpieces in said frame as the workpieces are carried from the loading station to the unloading station. - View Dependent Claims (2, 3, 4, 5, 6, 7)
- the auxiliary frame comprising a center auxiliary frame member having ends removably mounted onto said front and back main frame members and disposed parallel to said side frame members;
Specification