JP2010195026A - Bottom folder drive device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a bottom folder drive device which employs a new mechanism to thereby give a carton bottom part folding tendency and surely form the carton bottom part. <P>SOLUTION: In a mandrel for forming the bottom part of a carton spread in a cylindrical form, a pair of opposite triangular folds of the bottom part of the carton are formed, triangular pieces of the bottom folder section are brought into contact with these folds during rotating movement, thereby forming the folds. After the triangular pieces are brought into contact with the triangular folds of the carton, the triangular pieces are further moved in the directions in which the folds are formed. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a bottom folder driving device that is a temporary fold of a bottom fold incorporated in a mandrel device that forms a bottom portion 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. Is.

  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 steps, the step of making a compromise first is called a bottom folder. Conventionally, a crease is made by a mechanism that pushes inward by a pressing rod from opposite sides perpendicular to the rotation direction by the mandrel. In this method, sufficient creases could not be made, trouble occurred in adhesion of the bottom, and production loss occurred, for example, when the apparatus was stopped.

  JP 2000-127260 A

  According to the present invention, the bottom folder driving device has a novel mechanism so that the bottom portion can be reliably formed with a signature.

  That is, the bottom folder driving device of the present invention is a mandrel for forming a bottom part of a carton expanded into a cylindrical shape in a paper pack filling apparatus for beverages such as milk. The triangle piece provided in the bottom folder portion is in contact with the crease during the rotational movement so that the crease is formed. After the triangle piece contacts the triangle fold of the carton, the triangle The piece moves to the folding side.

  According to the bottom folder driving device according to the present invention, since it is possible to reliably attach a fold, it is possible to minimize troubles in the bottom forming step.

  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, a 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. The 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 dissolves the polyethylene on 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 folder driving device according to the present invention will be described in detail. First, the carton is fed into the mandrel part in a cylindrical state, but the part forming the bottom of this carton has a triangular crease attached at the time of carton molding, and the crease is completely folded Thus, the bottom can be formed. On the other hand, the bottom folder part of the mandrel has a triangular piece at the tip, and is set so that the triangular piece comes into contact with the triangular fold when the carton comes to this position by the rotation of the mandrel. When the triangular piece comes into contact with the triangular fold, the triangular piece is further rotated to the side where the triangular piece is further folded. As a result, the eclectic is completely attached.

  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

Claims (1)

In a mandrel for forming the bottom of a carton spread in a cylindrical shape in a paper pack filling device for beverages such as milk,
A pair of opposing bottoms of the carton with triangular folds,
The triangle piece provided in the bottom folder part comes into contact with the crease while it is rotating. After the triangle piece comes into contact with the triangle fold of the carton, the triangle piece further moves to the side where it is folded. A bottom folder drive device.

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