JP2010195027A - Bottom cylinder folding mechanism - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To extremely reduce friction between a device and a carton and minimize the occurrence of paper powder by adopting a cylinder system for a folding process performed by a bottom folding mechanism. <P>SOLUTION: In a mandrel for forming the bottom of a carton spread in a cylindrical form, the folding process is performed by pressing a pair of bottom temporarily forming pieces against the bottom of the carton. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a folding mechanism for forming a bottom part that is incorporated in a mandrel device that forms a bottom part of a carton that is opened in a cylindrical shape and is fed into a device for filling beverages represented by milk or the like.

  A number of stacked cartons stored in the storage unit are picked one by one from one end by a picking unit, and the cartons are opened and fed into a mandrel device for sealing the bottom. The mandrel device is rotating and performs a process for forming the bottom at each position. In the first position, put a signature on the bottom of the received carton. Further, in the next position, after the bottom is heated, the bottom is folded, and finally the bottom is pressed to complete the bottom formation. After that, it is sent to a filling device and sequentially flows to a process of filling a beverage typified by milk.

  Of the above processes, the bottom folding process is conventionally performed along heating and later along guide play. However, in this method, the carton and the part for folding are rubbed together to generate paper dust. It was. Installation of an apparatus for removing paper dust is necessary, and there is a problem in terms of space, and improvement has been desired. In addition to this, there is a method of sandwiching and folding, but there was also a problem of paper dust.

  WO 2004/080707

  In the present invention, since the folding process in the bottom folding mechanism is a cylinder system, the rubbing between the apparatus and the carton is extremely reduced, and paper dust can be suppressed as much as possible.

  That is, the bottom cylinder folding mechanism of the present invention is a mandrel for forming a bottom part of a carton expanded in a cylindrical shape in a paper pack filling apparatus for beverages such as milk. The folding process is performed by pressing against the bottom.

  According to the bottom cylinder folding mechanism according to the present invention, by carrying out the folding process by pressing a set of bottom tacking pieces against the bottom of the carton, the state where the device and the carton are rubbed is extremely eliminated. Can be suppressed as much as possible. More specifically, the conventionally used guide plate is not necessary, and the bottom temporary attachment piece 6 is pressed and temporarily bonded to the bottom of the carton 7 in order to hold the folded state of the carton up to the bottom press portion 5. Thus, the holding plate up to the bottom press portion 5 is unnecessary, and the carton 7 and the holding plate are rubbed as in the conventional case, and paper dust is not generated.

  Hereinafter, the present invention will be described in detail with reference to the accompanying drawings. FIG. 1 is a schematic view of the apparatus, in which the mandrel 1 rotates counterclockwise. The folded carton is unrolled into a cylindrical shape and fed into the mandrel 1 in that state. Then, the carton is inserted into each cylindrical holder (eight in the figure) provided in the mandrel 1 in the direction in which the outer peripheral circular side is formed at the bottom, and the carton is rotated as it is to pass through each process. This mandrel 1 has a temporary folding process for forming a bottom part called a bottom folder 2 which is the first process. After finishing the temporary folding step, a bottom heating device called a bottom heater 3 is provided at a position changed by 45 degrees. This heating melts the adhesive applied to the surface. Next, a bottom folding mechanism 4 is provided at a position moved about 90 degrees, and the bottom is formed. Furthermore, there is a process called bottom press 5 at a position moved 45 degrees. In the bottom press process, the bottom part is completely bonded by pressing about 1 ton. Then, it is discharged from the cylindrical holder of the mandrel part and conveyed to the next filling step.

  Among these, the bottom folding mechanism according to the present invention will be described in detail. The cylinder mechanism is built in, and when the cylinder is driven, the bottom folding process is completed by pressing one set of bottom tacking pieces 6 against the bottom of the carton 7, and the bottom part is completely removed in the next pressing process. Form. Here, the method using the cylinder mechanism has been described, but other methods may be used.

  Schematic diagram of the device

DESCRIPTION OF SYMBOLS 1 Mandrel apparatus 2 Bottom folder part 3 Bottom heater part 4 Bottom folding part 5 Bottom press part 6 Bottom temporary attachment piece 7 Carton

Claims (1)

In a mandrel for forming the bottom of a carton expanded into a cylindrical shape in a paper pack filling device for beverages such as milk,
A bottom cylinder folding mechanism characterized in that a folding process is performed by pressing a set of bottom tacking pieces against the bottom of a carton.

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