Cup making apparatus with lubricating means

• US 4,536,173 A
• Filed: 02/24/1983
• Issued: 08/20/1985
• Est. Priority Date: 02/24/1983
• Status: Expired due to Fees

• Current Assignee: Holiday CUPS Incorporated
• Original Assignee: Holiday CUPS Incorporated
• Inventors: Puls, Craig
• Primary Examiner(s): Crane, Daniel C.
• Assistant Examiner(s): Jones, David B.
• Application Number:
  US06/469,217
• Time in Patent Office: 908 Days
• Field of Search: 493/159, 493/158, 493/149, 493/148, 493/328, 493/330, 493/108, 493/107, 493/106, 493/105, 493/109
• US Class Current: 493/149
• CPC Class Codes: B31B 50/00 Making rigid or semi-rigid containers, e.g. boxes or cartons
• CPC Class Codes: B31B 50/624 Applying glue on blanks
• CPC Class Codes: B31B 50/741 Moistening; Drying; Cooling; Heating; Sterilizing

Abstract

A method of making cups includes forming blanks of a cup sidewall portion, lubricating the upper inside edge of the cup prior to forming the same into a substantially frusto-conical configuration by sealing its opposite edges and the application of tools which curl and then roll the upper edge of the sidewall portion to form the cup rim. The lubricant is applied to the sidewall blank by means of an applicator consisting of an arcuate wick secured between a pair of mounting plates which move the wick into engagement with each blank between the die cutter and the cup forming stations.

Claims

1. An apparatus for making cups which includes means for forming blanks of a cup sidewall portion, means for forming the cup sidewall blank into a frusto-conical configuration by sealing the opposite edges and for applying a bottom portion, and means for curling and rolling the upper edge of the cup to form a rim, the improvement comprising a lubricant applicator disposed between the blank forming means and the cup forming means and constructed and arranged for applying lubricant to the upper edge of the blank prior to formation of said cup to minimize frictional heating during the rim forming operation,

said lubricant applicator including arcuate wick means and a carrier for said wick means, means mounted on said carrier for supplying lubricant to said wick means, said carrier being reciprocally mounted on said apparatus for moving the wick means into and out of engagement with the edge of successive cup sidewall blanks after the same have been formed by said blank forming means so that lubricant will be applied to the edge of said blanks.

2. The machine set forth in claim 1 wherein said blank forming means comrpises a reciprocating die cutting means, said applicator being coupled to said die cutting means for movement in synchronism therewith.

3. An apparatus for making cups which includes means for forming blanks of a cup sidewall portion, means for forming the cup sidewall blank into a frusto-conical configuration by sealing the opposite edges and for applying a bottom portion, and means for curling and rolling the upper edge of the cup to form a rim, the improvement comprising a lubricant applicator disposed between the blank forming means and the cup forming means and constructed and arranged for applying lubricant to the upper edge of the blank prior to formation of said cup to minimize frictional heating during the rim forming operation,

said lubricant applicator including arcuate wick means and carrier means for said wick means, said carrier means being reciprocally mounted on said apparatus for movement into and out of engagement with cup sidewall blanks after the same have been formed by said blank forming means,

said carrier means comprising upper and lower interconnected plae means, said wick means being disposed between said plate means and having an edge extending from one side thereof for engagement with said cup blank upon reciprocating movement, and means for delivering lubricant to said carrier means.

4. The machine set forth in claim 3 wherein said blank forming means comprises a reciprocating die cutting means, said applicator being coupled to said die cutting means for movement in synchronism therewith.

5. The cup making machine as set forth in claim 3 and including a recess formed in one of said plate means for receiving said wick means.