Apparatus for trimming articles moldingly formed on thermoplastic sheet and process for operating thereof
First Claim
1. Apparatus for trimming articles moldingly formed on a plastic sheet, which comprises,a carriage having means for suckingly holding the molded article thereunder and means for reciprocally longitudinally moving the carriage through the apparatus,a first zone having conveyor means for receiving said article from a forming machine to be brought under said carriage for suckingly holding,a second zone downstream of said first zone having a pair of first cutter assemblies each comprising a longitudinal cutter device mounted on a base member;
- a pair of second cutter assemblies each comprising a transverse cutter device mounted on another base member;
means for actuating said pair of first cutter assemblies to transversely move between an inner position for trimming and a normal outer retreated position;
means for actuating said pair of second cutter assemblies to vertically move between an upper position for trimming and a normal lower retreated position, so that when said first and second cutter assemblies are in the respective retreated positions the molded article is brought by said carriage in said second zone, and then said molded article is sequentially trimmed by said longitudinal and transverse cutter devices which are moved into respective trimming positions by a respective actuating means;
means for tilting said longitudinal and transverse cutter devices respectively by an angle of about 90°
relative to the respective base members so as to release respectively trimmed longitudinal plastic sheet portions to fall down; and
conveyor means transversely extended thereunder to remove the trimmed sheet portions thereon out of the apparatus,and a third zone downstream of said second zone to remove the trimmed molded article which is brought thereto by and released to fall from the carriage out of the apparatus.
1 Assignment
0 Petitions
Accused Products
Abstract
Apparatus and process for trimming articles molded on a plastic sheet and successively fed from a forming machine. A carriage receives the article to be held thereunder by vacuum and is moved in a trimming zone, where a pair of longitudinal cutter devices, each having a stationary blade and an angularly movable blade, are horizontally moved together from respective retreated positions for longitudinal cutting. Then, a front transverse cutter device having similar pair of blades is raised up from a retreated position for transverse cutting and then a rear transverse cutter device is similarly operated.
14 Citations
7 Claims
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1. Apparatus for trimming articles moldingly formed on a plastic sheet, which comprises,
a carriage having means for suckingly holding the molded article thereunder and means for reciprocally longitudinally moving the carriage through the apparatus, a first zone having conveyor means for receiving said article from a forming machine to be brought under said carriage for suckingly holding, a second zone downstream of said first zone having a pair of first cutter assemblies each comprising a longitudinal cutter device mounted on a base member; - a pair of second cutter assemblies each comprising a transverse cutter device mounted on another base member;
means for actuating said pair of first cutter assemblies to transversely move between an inner position for trimming and a normal outer retreated position;
means for actuating said pair of second cutter assemblies to vertically move between an upper position for trimming and a normal lower retreated position, so that when said first and second cutter assemblies are in the respective retreated positions the molded article is brought by said carriage in said second zone, and then said molded article is sequentially trimmed by said longitudinal and transverse cutter devices which are moved into respective trimming positions by a respective actuating means;
means for tilting said longitudinal and transverse cutter devices respectively by an angle of about 90°
relative to the respective base members so as to release respectively trimmed longitudinal plastic sheet portions to fall down; and
conveyor means transversely extended thereunder to remove the trimmed sheet portions thereon out of the apparatus,and a third zone downstream of said second zone to remove the trimmed molded article which is brought thereto by and released to fall from the carriage out of the apparatus. - View Dependent Claims (2, 3, 4, 5, 6, 7)
- a pair of second cutter assemblies each comprising a transverse cutter device mounted on another base member;
Specification