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US 5,489,201 AGranted
Plastic tile corrugator and mold blocks
AssigneeCullom Machine Tool & Die, Inc.
InventorsJohn S. Berns, Heinrich Dickhut
Life of this patent
Estimating the term…
Abstract
A machine for making plastic tubing including a plurality of separate carriages for carrying mold blocks about the continuous path. First and second wheel pairs on opposite sides of each carriage ride on first and second tracks respectively through a molding section of the path. An offset wheel is disposed between the wheels of each pair and rides on guide tracks associated with and facing oppositely to the first and second tracks respectively through the molding section.
Claims6
A machine for making plastic tubing, comprising:
- first and second guide tracks on the machine defining a continuous path;
- a third guide track associated with and facing oppositely to the first track through a path molding section of the continuous path;
- a fourth guide track associated with and facing oppositely to the second track through the path molding section of the continuous path;
- a plurality of carriages for carrying mold blocks about the continuous path of said machine, each of said carriages carrying a pair of mold blocks pivotable about an axis into mating engagement with one another along the molding section of the continuous path to form an axial portion of a mold tunnel in the molding section and including
- a carriage body including a pivot about which mold block pairs may be pivoted into and out of mating engagement, the axis of said pivot being substantially parallel to the path of travel of the carriage,
- first and second wheels on one side of said carriage body, said first and second wheels rotating about substantially parallel axes and riding only on the first track through the path molding section,
- third and fourth wheels on the other side of said carriage body, said third and fourth wheels rotating about substantially parallel axes and riding only on the second track through the path molding section,
- a fifth wheel on said one side of said carriage body and disposed between said first and second wheels with an axis of rotation spaced from a plane defined by the axes of rotation of said first and second wheels, said fifth wheel riding only on the third track through the molding section, and
- a sixth wheel on said other side of said carriage body and disposed between said third and fourth wheels with an axis of rotation spaced from a plane defined by the axes of rotation of said third and fourth wheels, said sixth wheel riding only on the fourth track through the path molding section.
6 more elements
A machine for making plastic tubing through a molding section, comprising:
- first and second guide tracks on the machine defining a continuous path including a molding section, said first guide track extending a first direction along said molding section and facing a second direction substantially normal to said first direction along said molding section;
- a third guide track associated with and facing oppositely to the first track through the molding section of the continuous path;
- a plurality of carriages for carrying mold blocks about the defined continuous path, each of said carriages carrying at least one mold block about said continuous path and positioning said at least one mold block into engagement with another mold block along the molding section to form an axial portion of a mold tunnel in the molding section and including
- a carriage body securable to said at least one mold block, wherein said carriage bodies cooperatively position said mold blocks along said molding section to form a molding tunnel,
- first and second wheels on one side of said carriage body, said first and second wheels rotating about substantially parallel axes and riding only on the first track through the molding section,
- third and fourth wheels on the other side of said carriage body, said third and fourth wheels rotating about substantially parallel axes and riding only on the second track through the molding section, and
- a fifth wheel on said carriage body and disposed between said first and second wheels least one of said second and fourth wheels relative to the direction of travel wherein said fifth wheel rides only on the third track through the molding section.
4 more elements
Dependencies are inferred from the claim text.