JPH0151244B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an apparatus for manufacturing a telescopic double straw.

It is desirable that the straw attached to the beverage container be longer than the depth of the beverage container so that the straw does not fall into the container during drinking. However, since a straw of a length that is not inconvenient for drinking is longer than the beverage container itself, it is difficult to attach it to the beverage container.
Therefore, it becomes necessary to attach a retractable straw that is in a contracted state when attached and expands when drinking. Some of these telescopic straws have a double structure. This double straw is constructed by inserting an inner straw into an outer straw, but when assembling the double straw, the straw cannot be inserted unless the inner and outer straws are properly positioned.

That is, as shown in FIG.
If the tip of the straw is cut diagonally to form a sharp part 3, and the inner straw 1 and the outer straw 2 are placed on the same plane, the tip of the sharp part 3 and the edge of the outer straw 2 It will not be inserted at the position where it touches. Further, even if the sharp portion 3 is located outside the outer peripheral surface of the outer straw 2, the inner straw 1 cannot be inserted into the outer straw 2. In order to perform this insertion, the sharp portion 3 of the inner straw 1 must be located inside the inner circumferential surface of the outer straw 2, as shown in FIG.

This positioning work cannot be easily performed, and therefore, if it were attempted to be performed by a machine, the machine groove would become complicated. Therefore, the mechanical device becomes expensive. Moreover, if it were attempted to be carried out manually, the work would be extremely complicated, resulting in not only low work efficiency, but also a high unit price for the completed double straw. Due to these problems, it has been difficult for telescopic straws having a double structure to be widely used, despite their high convenience.

Therefore, in view of the above problems, the present applicant has proposed that the straw can be easily positioned in the position where the inner and outer straws are inserted, and therefore, the straw can be easily assembled with a double structure that is expandable and retractable. We have already proposed a method for doing this. Specifically, the method involves rotating and inserting at least one of the inner straw and the outer straw on substantially the same plane.

An object of the present invention is to provide a double straw manufacturing device that can continuously manufacture double straws with a simple structure using the above-described method.

For this purpose, the double straw manufacturing device of the present invention has a plurality of spiral rod bodies each having a spiral groove formed therein,
A straw conveying device is provided with a stop plate positioned along the outside of the outermost helical rod body to allow one of the inner and outer straws to move straight, and a swinging member to swing the other straw of the inner and outer straws, as appropriate. a straw supply device that supplies the inner and outer straws to the helical rod body at intervals, and a straw supply device located downstream of the straw supply device that expands the diameter of the end of the inner straw on the joint side and the end of the outer straw on the joint side of the straw supply device; and a straw end forming device that reduces the diameter of the end of the straw, and the spiral rod is rotated to convey the inner and outer straws placed on the spiral rod diagonally forward, and the stop plate moves one straw straight forward. The device is characterized in that the other straw is swung by a swinging member, and the inner and outer straws are inserted while rotating.

The present invention will now be described in detail based on preferred embodiments shown in the drawings.

In the figure, 10 is a straw conveying device, which conveys the inner straw 1 and the outer straw 2. In this embodiment, the double straws are manufactured in two rows as shown in FIG. One set of straw end forming devices is also provided on the upper and lower sides. 1 in the diagram
1, 11... are spiral rod bodies constituting the straw conveying device 10, and a plurality of them are arranged in parallel. This spiral rod body 1
1, 11... are formed with a spiral groove 12, and the spiral groove 1
Inner and outer straws 1 and 2 are dropped into 2 and placed on spiral rod bodies 11, 11, . A plurality of spiral rods 11, 11, . . . arranged in parallel have spiral grooves 12, 12, .

Then, on the outside of the spiral rod body 11' located at the end of the spiral rod bodies 11, 11... on the rotation direction side,
A stop plate 13 is provided along the helical rod 11'. In this embodiment, the spiral rods 11, 11, . . . of the lower straw conveying device 10 in FIG.
Since it rotates clockwise, that is, to the right in the figure, there is a stop plate 1 on the outside of the spiral rod body 11' at the right end in the figure.
3 is provided.

In the figure, reference numeral 14 denotes a straw swinging member for swinging the outer straws 2, 2... on the spiral rods 11, 11..., and the position where the opposite end of the outer straw is placed in the operation described later. It is provided in The upper end surface of this straw swinging member 14 has an appropriate number of mountain-shaped parts 15, 1 for swinging the outer straw 2.
5... is formed.

In addition, from the vicinity where the straws 1 and 2 inside and outside the straw conveying device 10 start to be inserted, to the straw end forming device described later, the outer straw 2 is stopped from fitting into the inner straw 1 at a fixed position, and the position is maintained. An outer straw stop plate 16 is provided for this purpose. The position at which the outer straw 2 is stopped is a position where the ends of the inner and outer straws 1 and 2 can be reliably formed by a straw end forming device to be described later.

In the figure, 20 and 21 are straw supply devices that supply the inner and outer straws 1 and 2 to the straw conveying device 10, and in this embodiment, 20 is the inner straw 1.
21 is for supplying the outer straw 2. That is, the inner straw 1 is supplied upstream of the outer straw 2. In the figure, 22 and 23 are feed rollers, which have grooves on their outer circumferential surfaces that can receive straws, and are rotatable by being fitted onto rotation shafts 24 and 24 installed horizontally in the machine frame 9 of the double straw manufacturing device. It is as follows. The rotational speed of the feed rollers 22 and 23 and the straw conveyance device 10
Adjust the conveyance speed of the straw to the spiral rod body 1.
1, 11... are placed at regular intervals and transported.

The feed roller 22 for the inner straw 1 includes
The knife 2 is moved diagonally to the feed roller 22.
5 is provided, and a feed roller 2 for the outer straw 2 is provided.
3 is provided with a knife 26 in the right direction. Therefore, the sharp portion 3 is formed at the tip of the inner straw 1 as described above. In this example, as shown in Fig. 4, straws are manufactured in two rows, upper and lower.
Since the upper and lower feed rollers 22 and 23 are integrated, a knife receiving groove 27 is formed. Further, 28 and 28 are rubber belts for holding the straws on the feed rollers 22 and 23, so that the straws can be dropped to appropriate positions on the straw conveying device 10 and can be cut with knives 25 and 26. . Further, reference numerals 29 and 29 shown in FIG. 1 are straw storage containers, from which the inner and outer straws 1 and 2 are supplied to the feed rollers 22 and 23.

30 in the figure is a straw end forming device,
It is fitted onto a rotating shaft 31 that is rotatably supported in the machine frame 9 downstream of the straw conveying device 10.

This straw end forming device 30 includes a straw holding cylinder 32, inner straw forming molds 33, 33, . . . for forming the end of the inner straw 1, outer straw forming dies 34, 34, .
and a straw fixing device 35 consisting of an endless rubber belt.

The straw holding cylinder 32 has a large number of grooves formed on its outer circumferential surface to receive straws, and is transferred from the straw conveying device 10 with the inner and outer straws 1 and 2 slightly inserted. Then, the rubber belt of the straw fixing device 35 is attached to the straw holding cylinder 32.
The holding positions of the inner and outer straws 1 and 2 held by the straws are fixed.

The inner straw mold 33 has a conical tip 36 to enlarge the diameter of the end of the inner straw 1, and the outer straw mold 34 has a conical shape 36 to expand the diameter of the end of the inner straw 1.
A recess 37 is formed to fit into the end of the outer straw 2 so as to reduce the diameter of the end. These inner and outer straw molding molds 33 and 34 are provided corresponding to the grooves for holding the straws in the straw holding cylinder 32, and rotate in synchronization with the rotation of the straw holding cylinder 32. In the figure, 38, 38... are immovable cam members, and the heads of the straw molding molds 33, 34 are pressed onto the cam surfaces of the straw molding molds 33, 34.
As the straws rotate, these tips 36 and 37 engage and disengage from the ends of the inner and outer straws 1 and 2. That is, when engaged, the inner and outer straws 1,
The two ends are molded to release the straw upon removal.

The ends of the straws 1 and 2 formed by the inner and outer straw molds 33 and 34 are
The shape is shown in FIGS. 2 and 13. That is, the inner straw 1 of the outer straw 2
The end on the side where the inner straw is connected is reduced in diameter to form a reduced diameter part 5, and further, the reduced diameter part 5 is extended by an appropriate length in the direction of extension of the inner straw 1 to form a tapered part 6. be. The inner diameter of this tapered portion 6 is made to substantially match the outer diameter of the inner straw 1 to such an extent that sliding of the inner straw 1 is not hindered. And inner straw 1
An enlarged diameter portion 7 is formed by enlarging the diameter of the end portion of the straw on the side where it is connected to the outer straw 2.

In the figure, 40 is a straw dispensing device for conveying the straw whose end has been formed by the straw end forming device 30, and is constructed of a spiral rod like the straw conveying device 10.

The operation of the double straw manufacturing apparatus of the present invention constructed as described above will be explained below.

The materials of the inner straw 1 and outer straw 2 are:
It is supplied to straw storage containers 29,29. In this embodiment, since the double straws are manufactured in two rows, the length of the straw material is equal to the length of two straws. This straw storage container 29,2
The straw material supplied to the feed roller 9 is continuously supplied to the feed rollers 22 and 23, and the straw material is cut approximately in half during the rotation of the feed rollers 22 and 23. Since the knife 25 provided on the feed roller 22 for the inner straw 1 is attached diagonally, the end of the inner straw 1 is cut diagonally to form the sharp portion 3 during this cutting. By the rotation of the feed rollers 22 and 23, the inner and outer straws 1 and 2 are transferred to the straw conveyor 10.
will be supplied to

The inner and outer straws 1 and 2 supplied to the straw conveying device 10 are inserted during their conveyance.

In this embodiment, in the lower manufacturing row in FIG. 4, the spiral grooves 12, 12, . When the spiral rods 11, 11... rotate, the inner straw 1 and the outer straw 2 placed thereon move along the arrow A in FIGS. 4 and 7.
will move in the direction. The feed roller 22 feeds an inner straw 1 having a sharpened portion 3 formed by cutting the end diagonally with a knife 25.
With the stop plate 13 facing away from the helical rod body 1
1, 11... and the feed roller 23 supplies the outer straw 2 to an appropriate position on the downstream side thereof. The inner straw 1 moves in the direction of arrow A in FIGS. 4 and 7, and finally its end abuts against the stop plate 13, and thereafter moves straight along the stop plate 13. Since the outer straw 2 is supplied downstream from the placement position of the inner straw 1, it is conveyed obliquely to the inner straw 1 which is already moving straight along the stop plate 13, and the inner straw 1 will collide with. However, since the inner straw 1 is being pushed into the spiral grooves 12, 12..., it is rotating itself, and after the sharp part 3 is positioned inside the inner peripheral surface of the outer straw 2, the outer straw 2 is inserted into the inner straw 1.

The principle of inserting the inner and outer straws 1 and 2 is as follows. That is, when inserting the inner straw 1 into the outer straw 2, if the sharp portion 3 is located inside the inner peripheral surface of the outer straw 2, the inner straw 1 can be easily inserted by simply pushing it. This is the slope portion 4 that forms the sharp portion 3.
This is because the straw is guided by the inner edge of the outer straw 2. On the contrary, if the sharp part 3 is not positioned inside the inner peripheral surface of the outer straw 2 and the inner straw 1 is pushed in, the slope part 4 will be guided by the outer edge of the outer straw 2. , the inner straw 1 cannot be inserted. but,
Even if the sharp portion 3 is not positioned inside the inner peripheral surface of the outer straw 2, the inner straw 1
Since the outer diameter of the straw is smaller than the inner diameter of the outer straw 2, if the inner straw 1 is rotated at an appropriate angle from this position, the sharp portion 3 will always be located inside the inner peripheral surface of the outer straw 2. Become. Therefore, a double straw can be assembled by inserting the straw while rotating either the inner or outer straw.

A straw swinging member 14 is provided so that the end of the outer straw 2 is guided by the straw swinging member 14 when the outer straw 2 is positioned near the position where it contacts the inner straw 1. It is set as. While the end of the outer straw 2 is guided by the straw swinging member 14, the insertion side end of the outer straw 2 moves up and down slightly, so that the inner and outer straws 1 and 2 can be inserted. It's easy. In this embodiment, in order to swing the outer straw 2, the straw swinging member 14 is provided in the middle of the transport path of the outer straw 2, but it may be provided in the middle of the movement path of the inner straw 1.

The outer straw 2 inserted into the inner straw 1 is
After the end of the straw comes into contact with the outer straw stop plate 16 provided in the middle of the straw conveying device, the insertion does not proceed and the insertion position into the inner straw 1 is maintained. Then, while maintaining this position, it is transferred to the straw holding cylinder 32 of the straw end forming device 30.

The straw sent to the straw end forming device 30 is entrusted to the rotation of the straw holding cylinder 32, and during the rotation, it is guided by cam members 38, 38, . engage with the ends of the inner and outer straws 1 and 2, respectively, to expand and contract the diameters of the ends, respectively. In this case, the inner and outer straws 1 and 2 are connected to the straw fixing device 3.
Since its position is fixed by 5, the above-mentioned end portion can be formed smoothly.

The ends formed by this straw end forming device 30 are as shown in FIGS. 12 and 13. Therefore, the enlarged diameter portion 7 of the inner straw 1
Due to the engagement between the inner straw 1 and the reduced diameter part 5 of the outer straw 2, the inner straw 1 does not fall off from the outer straw 2 when the straw is extended, and the inner straw 1 is held by the tapered part 6 of the outer straw 2. Therefore, the inner and outer straws 1 and 2 are not bent at their joints.

As described above, the double straw manufacturing apparatus of the present invention includes a straw conveying device comprising a plurality of spiral rod bodies each having a spiral groove arranged side by side, and an inner and outer straw each supplied to the spiral rod bodies at appropriate intervals. and a straw end forming device located downstream of the straw supply device, which expands the diameter of the end of the inner straw on the joint side and reduces the diameter of the end of the outer straw on the joint side, By rotating the spiral rod body, the inner and outer straws placed on the spiral rod body are conveyed diagonally forward, and the inner and outer straws are inserted while rotating, so that double This has the effect of making it possible to manufacture straws. Moreover, since the structure is simple, it can be provided at low cost and has the effect of contributing to the spread of highly convenient double straws.

[Brief explanation of drawings]

The drawings depict preferred embodiments of the invention. FIG. 1 is a schematic front view of the double straw manufacturing apparatus of the present invention, and FIG. 2 is a right side view.
FIG. 3 is a front sectional view. FIG. 4 is a plan view. 5 and 6 explain the principle of inserting a straw. It cannot be inserted in the state shown in FIG. 5, but can be inserted in the state shown in FIG. 6. FIG. 7 is a plan view of the main parts. Figure 8 shows
The main part is shown cut away from the front. Figure 9 is the 7th
10 is a cross-sectional view taken along the line -X in the figure, and FIG. 10 is a cross-sectional view taken along the line X--X. FIG. 11 is a partially cutaway view taken along the line XI-XI in FIG. 4. Figures 12 and 13 show a retractable straw manufactured by the double straw manufacturing apparatus of the present invention, with Figure 12 showing the front in the contracted state and Figure 13 showing the cross section of the left side in the extended state. ing. 1...Inner straw, 2...Outer straw, 9
...Machine frame, 10...Straw transport device, 11...
Spiral rod body, 12... Spiral groove, 13... Stop plate, 1
4...Straw swinging member, 16...Outer straw stop plate, 20...Inner straw supply device, 21...
... Outer straw supply device, 22, 23 ... Feed roller, 25, 26 ... Knife, 29 ... Straw storage container, 30 ... Straw end forming device,
32...Straw holding cylinder, 33...Inner straw mold, 34...Outer straw mold, 40...
Straw dispensing device.

Claims (1)

[Claims] 1. A plurality of spiral rod bodies each having a spiral groove formed therein are arranged in parallel,
A straw conveying device is provided with a stop plate positioned along the outside of the outermost helical rod body to allow one of the inner and outer straws to move straight, and a swinging member to swing the other straw of the inner and outer straws, as appropriate. a straw supply device that supplies the inner and outer straws to the helical rod body at intervals, and a straw supply device located downstream of the straw supply device that expands the diameter of the end of the inner straw on the joint side and the end of the outer straw on the joint side of the straw supply device; and a straw end forming device that reduces the diameter of the end of the straw, and the spiral rod is rotated to convey the inner and outer straws placed on the spiral rod diagonally forward, and the stop plate moves one straw straight forward. A double straw manufacturing device characterized in that the other straw is rotated by a swinging member, and the inner and outer straws are inserted while rotating.