JPS61246044A - Diametral expanding device for end of beverage sipper - Google Patents

Abstract

PURPOSE:To enable to realize the automatic production and mass production of double beverage sipper by a method wherein the expansion of the diameter at the end of the sipper is performed by approaching and separating a molding tool, at the end opposite to a sipper of which a protruded tip portion corresponding to the diametrally expanded shape of the sipper, and a sipper to and from each other. CONSTITUTION:The inside sipper 1 and the outside sipper 2 are respectively transferred from a conveying device 10 to a sipper-holding drum 14. Accordingly, said sippers are shifted as the holding drum 14 pivots and in the midway of their shifting the sippers are held down by a rubber belt 17 so as to prevent the relative movement between the sippers and the drum from developing. Simultaneous with the pivoting motion of the holding drum 14, rotating plates 20 and 21 (not shown), on which diametral reducing molds 15 are diametral expanding molds 16 are held respectively, are also pivoted so as to shift the diametral reducing mold 15 and the diametral expanding molds 16 in order to protruding the respective molds 15 and 16 in the direction of the sippers by means of cams 23 and 24. As a result, the diametrally expanding forming is done, because the protruded tip portion 26 of the diametral expanding mold 16 enters the interior of the end of the inside sipper 1. Similarly, the diametral reduced part 5 is formed, because the cavity portion 25 (not shown) at the end of the diametral reducing mold 15 receives the end of the outside sipper 2. After that, the diametral reducing mold 15 and the diametral expanding mold 16 are retreated and returned to their initial positions by means of the actions of the cams.

Description

[Detailed description of the invention] (Industrial application field) The present invention relates to a device for expanding the diameter of the end of a drinking straw.

(Prior Art) A straw attached to a beverage container needs to be longer than the depth of the container so that it does not fall into the container during drinking. With the known single straw straw, even if the straw is stuck into the container, only a small portion comes out of the container, making it difficult to drink the beverage in the container.

In order to solve this problem, we created a double straw that can be expanded and retracted so that it is short when it is attached to the container, becomes longer when it is stuck into the container, and then the part that sticks out from the container is longer when it is stuck. - was developed.

That is, as shown in FIGS. 4 and 5, this double straw consists of a thin inner straw 1 and a thicker outer straw 2, and the inner straw 1 is inserted into the outer straw 2. The inner straw 1 is made longer than the outer straw 2 so that the inner straw 1 protrudes beyond the tip of the outer straw 2. The tip of the inner straw 1 is cut diagonally 4 so as to form a sharp point 3 for convenience of sticking into a container. Then, connect this inner straw 1 to the outer straw.
In order to prevent the inner straw 1 from being pulled out from the outer straw 2 when it is pulled out from the outer straw 2 and extended, the outer straw 2 is
A reduced diameter part 5 is formed at the tip of the inner straw 1, and an enlarged diameter part 7 is formed at the proximal end of the inner straw 1, so that the reduced diameter part 5 and the enlarged diameter part 7 are engaged with each other. Furthermore, in the straw shown in the drawings, a tapered portion 6 is formed at the tip of the reduced diameter portion 5 to prevent wobbling at this engaging portion when the straw is extended.

Although it is easy to produce the double straw having the above structure by hand, it is extremely difficult to produce it mechanically in large quantities or automatically.

However, the applicant has developed and proposed a double straw manufacturing device that makes it possible to mechanically automate the production of double straws (Japanese Patent Laid-Open No. 197215/1983).

(Problem to be Solved by the Invention) The most difficult point in the automatic production of the double straw is to mechanically and automatically insert an inner straw with a slightly smaller diameter into an outer straw with a larger diameter. However, this has already been proposed in Japanese Patent Laid-Open No. 197214/1983.

Furthermore, what is necessary to automatically and mass-produce these double straws is to reduce the diameter of the end of the outer straw and expand the diameter of the base of the inner straw, and this work can be done by machine. This is something that should be done in a specific manner.

The object of this invention is to provide a device for expanding the diameter of the end of a straw, which enables automatic production and mass production of double straws for drinking. be.

(Means for Solving the Problems) For this reason, the present invention comprises a holding member that holds a straw, and a mold that faces the straw held by this holding member, and the straw of this mold is The end facing the mold has a protruding tip having a shape corresponding to the expanded diameter shape of the straw, and is adapted to move the mold and the straw toward each other and away from each other. .

(Example) The present invention will be described in detail below using examples shown in the drawings.

The drawing shows a straw end forming device 10 including the diameter expanding device of the present invention, and this device 10 is disposed in the middle of the straw conveying device 8 as shown in FIGS. 2 and 3. It is. The straw conveying device 8 is composed of a plurality of spiral rods 9 arranged in parallel. A spiral groove 11 is formed in this spiral rod body, and inner and outer straws 1 are formed in this spiral groove 11.
, 2 are positioned so that the straw is sent by rotation of the spiral rod 9.

In the figure, reference numerals 12 and 13 are guide plates that stand parallel to the spiral rod body 9 and above the conveying surface of the straw.
and 2 in parallel to the conveying device 10, and in particular, the guide plate 13 is designed so that the inner straw 1 is connected to the outer straw 2.
The outer straw 2 is fed to the end forming device 10 while maintaining the state that it is slightly inserted into the straw (second figure).

Partial end forming device 1 including a straw end diameter expanding device of the present invention
0 is a straw holding member 14 constituting the diameter expanding device of the present invention.
A straw holding drum 14 as a straw, an outer straw end diameter reducing mold 15, an inner straw end diameter expanding mold 16 as a forming mold 16 constituting the diameter expanding device of the present invention, and a straw holding drum 14 as shown in FIG. Rubber belt 17 for fixing the
It consists of The end forming device 10 is a stationary machine frame 1.
It is held on a rotation shaft 19 which is pivotally supported by a shaft 8 .

The outer straw end diameter-reducing mold 15 and the inner straw end diameter expanding mold 16 are both held movably in and out by rotary plates 20 and 21 fixed to a rotating shaft 19 with a holding drum 14 in between. These diameter-reducing mold 15 and diameter-expanding mold 16 are
This is opposed to a holding groove formed in the straw holding drum 14 for holding the straw. Further, the diameter-reducing mold 15 and the diameter-expanding mold 16 are always given a force in the retracting direction by the spring 22, and are guided by the fixed cams 23, 24 by the rotation of the rotary plate 20, 21 so that they protrude. It's Nishide.

The straw end enlarged diameter mold 16 constituting the device of the present invention has a protruding tip 26 at the end opposite to the straw that corresponds to the enlarged diameter shape of the straw end.

On the other hand, the end of the outer straw one end diameter reduction mold 15 has a recessed portion 25 corresponding to the diameter reduction shape of the outer straw end. The shape of the protruding tip 26 may be simply formed into a tapered shape, or even a bell-shaped shape, in other words, a shape with a diameter expanding. It may be of any shape.

In the device configured as described above, the inner straw
1 and outer straw 2 are each transferred from the conveying device 10 to the straw holding drum 14. Therefore, these straws move as the holding drum 14 rotates, and are held down by the rubber belt 17 midway through the movement to prevent them from moving. At the same time, as the holding drum 14 rotates, the rotary plate 20.21 that holds the diameter-reducing die 15 and the diameter-expanding die 16 also rotates, moving the diameter-reducing die 15 and the diameter-expanding die 16, and moving each of them to the cam 2.
3. Protrude in the direction of the straw by 24. Then, the protruding tip 26 of the diameter expanding die 16 enters the end of the inner straw 1 to perform diameter expanding molding. Similarly, the recess 25 at the end of the diameter reduction die 15 receives the end of the outer straw 2 to form the diameter reduction part 5.

These diameter-reducing mold 15 and diameter-expanding mold 16 are retracted and returned by cam action, and the end portions are shaped like straws.
1 and 2 are respectively delivered to a conveying device.

In the above embodiment, the inner and outer straws are combined and the ends are formed, but a single straw may be formed with an enlarged diameter, or the tip of the straw may be formed by expanding the diameter. It may be formed not only at the base end but also at both ends. Further, although a spiral rod is used as the straw conveying device, this is not limited to a spiral rod, and may be any device that can convey the straws at a constant interval.

Further, although the straw holding member is shown as a holding drum, this need not be a drum either (anything that can hold the straw may be used).

Also, in order to move the expanded diameter mold and the straw closer to each other, the expanded diameter mold was moved in and out, but conversely, the expanded diameter mold was fixed and the straw was moved in and out.
may be moved in and out.

(Effects of the Invention) The device of the present invention, as shown in the above, comprises a holding member that holds a straw, and a mold that faces the straw held by this holding member, and a mold that faces the straw of this mold. The end has a protruding tip with a shape corresponding to the expanded diameter shape of the straw, and the mold and the straw are moved toward and away from each other, so that it is possible to enlarge the diameter of the end of the straw. It has become possible to perform this process mechanically and automatically, which makes it possible to produce double straws automatically and in large quantities, thereby contributing to the development of the straw manufacturing industry. However, it is quite large.

[Brief explanation of the drawing]

The drawings show an embodiment of the straw end forming device including the straw end diameter expanding device of the present invention, and FIG. 1 is a sectional view thereof, FIG. 2 is a plan view thereof, and FIG. 3 is a front view thereof. It is. 4 and 5 are views showing an example of a double straw whose diameter has been enlarged by the apparatus of the present invention. The figure is a cross-sectional view in an expanded state. 1...Inner straw 2...Outer straw 7...Enlarged diameter part 14...Straw
Holding member 16...Molding mold 26...
Figure 1 of the protruding tip

Claims (1)

[Claims] It consists of a holding member that holds a straw, and a mold that faces the straw held by this holding member, and the end of the mold that faces the straw has a protruding tip that has a shape that corresponds to the expanded diameter shape of the straw. What is claimed is: 1. A device for expanding the diameter of an end of a drinking straw, characterized in that the device has a diameter expanding device for an end of a drinking straw, and is adapted to move the mold and the straw toward and away from each other.