Title:
METHOD AND APPARATUS FOR FORMING TUBE, AND PACKAGING CONTAINER-MAKING MACHINE
Document Type and Number:
Japanese Patent JPH1191729
Kind Code:
A
Abstract:
PROBLEM TO BE SOLVED: To provide a tube-forming method, an apparatus therefor, etc., in which there is no occurrence of wrinkles in a web and there is also no possibility of breaking the web when a rectangular parallelopiped-shaped packaging container is formed by using a plate-like web through a step of making a tubular web. SOLUTION: This tube forming method forms a plate-like web into a tubular web while transferring the plate-like web along roller faces formed by a plurality of rollers 11-13 constituting a forming roller 4. In this method, a roller support plate 16 is rotated by a tightening member 29 while its positional regulation is being effected by rollers 25 provided to a roller mounting arm 23 so that the web is transferred with the virtual center axis (point X) of the tubular web, which is formed by the roller faces of the rollers 11-13, as reference. Thereby, the web can be accurately transferred in its longitudinal direction so that it extends in a predetermined direction fixed by the rollers 11-13. As a result, when a rectangle-columnar web is formed from the tubular web, a product having high forming accuracy can be obtained in which a fold line of the web extending in the longitudinal direction becomes in alignment with an arris in the longitudinal direction of the prismatic web.
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Inventors:
FUJIMOTO AKEMASA
KATAYAMA YUJI
YAMAMOTO HIDETO
KATAYAMA YUJI
YAMAMOTO HIDETO
Application Number:
JP25518697A
Publication Date:
April 06, 1999
Filing Date:
September 19, 1997
Export Citation:
Assignee:
SHIKOKU KAKOKI CO LTD
International Classes:
B65B47/04; B65B9/22; (IPC1-7): B65B47/04
Attorney, Agent or Firm:
Takayoshi Matsunaga (1 outside)