JPS598345B2 - Flexible straw creasing device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a flexible straw creasing device.

Most straws are straight tubes for drinking soft drinks such as juice and cola.

In the case of a straight tubular straw, the suction port of the straw inserted into a cup or the like is located above the cup, so the mouth must be brought closer to the top of the straw, resulting in an inconvenient posture when eating or drinking. For this reason, a flexible straw that can be bent near the suction port has been proposed.The present invention quickly creates a fold in the portion that forms the flexible portion of a straight tubular straw when manufacturing this flexible straw. This invention relates to a device intended to be attached to a device.The present invention will be explained below based on an embodiment shown in the drawings.

In the figure, 1 is a shaft supported by the main body frame, and this shaft 1
A rotating drum 2 is integrally provided in the rotary drum 2.
A ring-shaped board 2a is arranged on one side of the main body, and this board 2a
and the drum body are connected to each other by a short tube-shaped cylindrical portion 2b to form an integral body.

A large number of rotating core shafts 3 are provided on the side surface of the disk 2a of the rotating drum at a constant pitch in the circumferential direction of the drum. The dirt is fixed to the disk 2a via a bearing 4 that rotatably supports the rotating core shaft 3, and the core shaft 3 is attached to the cylindrical portion 2 of the rotating drum.
The elongated hole provided in b, the main body, and the hole provided in the board are lined up to form a straw fitting hole H, and the straw is inserted into the hole H. At this time, the diameter of the rotating core shaft is made larger than the wall thickness of the rotating drum cylindrical portion 2b, so that the rotating core shaft circumferential surface slightly protrudes from the inner and outer circumferential surfaces of the cylindrical portion 2b, and the tip of the core shaft is set to the rotating drum main body. It shall be within. A pulley 5 is fixed to the other end of this rotating core shaft, that is, to the outside of the rotating drum, and is constantly driven and stretched when each rotating core shaft reaches a fixed position as the rotating drum revolves. hand(·
It is made to rotate in contact with a belt 6 for driving the rotation of the core shaft. A part of this belt 6, that is, a belt between at least two pulleys, is made to coincide with a part of the revolving locus of a rotating core shaft fixed to a rotating drum. Also this belt 6
At the position where the roller is stretched, two folds are formed so as to sandwich the inner circumferential surface and outer circumferential surface of the cylindrical portion of the rotating drum.
8 are opposed to each other and are rotatably provided (the rollers 7 and 8 have their shafts 7a and 8a connected to eccentric shafts 9 and 1, respectively).
The eccentric shafts are rotatably supported in the bearing casings 11 and 12, and the bearing casings 11 and 12 are connected to the main body frame or the main body frame and the rotating drum. The eccentric shafts 9 and 10 are loosely fitted and supported by the supported shaft 1.
Gears 13 and 14 are integrally provided concentrically with the axis of The axes of the folded rollers 7 and 8 are shifted so that the outer circumferential surfaces of both rollers 7 and 8 approach or separate.The movement of the two rollers toward and away is caused by the rotating core passing between the folded rollers. This is done in synchronization with the time.Roller shafts 7a, 8a
Pulleys 15 and 16 of different diameters are fixed to the outer ends of the
A belt 1 is connected between both pulleys 15 and 16 and the drive pulley 17.
8 is stretched, and the rollers are always driven at different circumferential speeds. The outer periphery of the above-mentioned creasing roller and the outer periphery of the rotating core shaft are provided with ring-shaped protrusions (. shall form a concave groove, respectively.

When forming a fold to form a flexible portion in the straw in the apparatus constructed as described above, one end of the straw is inserted into the straw insertion hole H of the rotating drum.

Although not shown in the drawings, this is carried out by a slide chuck mechanism arranged parallel to the rotating drum and the shaft 1. At this time, at least the part of the straw where the crease is to be made is in a state where the rotating core shaft is inserted into the straw.In this state, the rotating drum rotates and the inner and outer peripheral surfaces of the rotating drum face each other. When the straw S passes between the crease rollers 7 and 8, the eccentric shafts 9 and 10 are rotated by mutually meshed gears 13 and 14, supporting both rollers, respectively. The outer circumferential surfaces of both rollers, which were previously separated, now approach each other.
Pressed toward the rotating core shaft. This pressing force is predetermined according to the amount of eccentricity of the eccentric shaft, so that desired creases can be formed. At the same time, the pulley 5 provided at the end of the rotating core shaft constantly rotates in contact with the belt 6.The rotation of the rotating core shaft 3 and the creasing rollers 7 and 8 causes the stroke is one in which a plurality of folds are simultaneously formed on its outer circumferential surface.When the rotary core shaft 3 to which the straw is fitted constantly rotates ( The surfaces are separated by the rotation of the eccentric shaft by the gear, the pressing force with the rotating core shaft is released, and the pulley is separated from the belt 6, and the rotation of the rotating core shaft stops.At this point, the straw fitting The straw after the creasing is completed is pulled out from the through hole.This operation is repeated one after another to continuously and accurately crease the straw.

The opposing creasing rollers approach each other by rotating the eccentric shafts,
One movement of separation is to match the pitch between the rotating core shafts provided on the circumferential side of the rotating drum.

According to the present invention, a rotating drum is provided with a large number of freely rotatable rotating core shafts through which straws are inserted, and the rotary drum is eccentrically rotated at a portion of the rotating locus of the rotating drum so as to face the inner and outer circumferential surfaces of the drum. A moving crease roller is provided to
・As a result, the desired crease is formed when the material is inserted into the rotating core shaft and passed between the creasing rollers facing each other as the rotating drum rotates. Since the straws that are inserted into a large number of rotating core shafts provided at regular pitches on the rotating drum can be sequentially creasingly formed, the structure is simple, and there is an advantage that the creasing process can be performed reliably and quickly.

[Brief explanation of the drawing]

1 is a front view, FIG. 2 is a side view, FIG. 3 is a detailed sectional view of the creasing roller, and FIG. 4 is an explanatory diagram of the drive system. 1... Shaft, 2... Rotating drum, 3... Rotating core shaft,
4...Bearing, 5...Pulley, 6...Belt, 7,
8... Folded roller, 9, 10... Eccentric shaft, 11,
12... Bearing housing, 13, 14... Gear, 15, 16
... Pulley, 17... Drive pulley, 18... Belt, H... Straw insertion hole, S... Straw.

Claims (1)

[Claims] 1. A large number of rotating core shafts provided rotatably at a fixed pitch on the side of the drum are inserted into the stroke fitting holes provided in the rotating drum, and a part of the rotation locus of the rotating drum is inserted into the inner and outer peripheral surfaces of the drum. Creased rollers are provided facing each other and are supported by eccentric shafts so as to constantly rotate toward and away from each other, and at the position of the creasing rollers, a rotating core shaft provided on a rotating drum is placed. At this time, a belt that constantly rotates is arranged so that a pulley protruding from the end of the core shaft rotates. A creasing device for a flexible straw, characterized in that a desired creasing process can be performed using a shaft and a creasing roller.