JPS59197215A - Double straw producing apparatus - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an apparatus for manufacturing a retractable 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, when attached, it is in a shrunken state,
It becomes necessary to attach a retractable straw that extends 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, these straws cannot be inserted unless the inner and outer straws are properly positioned.

That is, as shown in FIG. 5, when the tip of the inner straw 1 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. However, the straw is not inserted at a position where the tip of the sharp portion 3 and the edge of the outer straw 2 are in contact with each other. 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 1-2, as shown in FIG.

This positioning work cannot be performed easily, and therefore, if it were attempted to be performed by a machine, the mechanism would be 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, the telescopic straw having a double structure has not been widely used despite its high convenience.

Therefore, in view of the above problems, the applicant has decided to
rows can be easily positioned for these to be inserted, thus fi? We have already proposed a method for assembling a straw consisting of a double structure that can be expanded and contracted in sheep. That is, in this method, at least one of the inner straw and the outer straw is inserted while being rotated on substantially the same plane.

This invention uses the above method and has a simple structure,
The object of the present invention is to provide a double straw manufacturing apparatus that can continuously manufacture double straws.

For this purpose, 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 formed therein, and a straw conveying device having an appropriate interval therebetween. l! ll! a straw supply device that supplies inner and outer slots to the rotary rod;
A straw end forming device is located downstream of the straw feeding device and 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. It is characterized in that the rod is rotated to convey the inner and outer straws placed on the spiral rod diagonally forward, 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 and the outer straws 1 and 2. In this embodiment, as shown in FIG. 4, since the double straw is manufactured on two sides, the straw conveying device is arranged in one row at the top and one at the bottom in the same figure. A device and a straw end forming device are also provided, one set each for the upper and lower sides.

In the figure, 11, 11, . . . are spiral rods constituting the straw conveying device 1°, and a plurality of them are arranged in parallel. This screw J* rod body 11
．． A spiral groove 12 is formed in 11..., and the inner and outer shafts 1.2 are dropped into the spiral groove 12 to form the spiral rod body 111.
It is placed on 1... Multiple spiral rod bodies 11 arranged in parallel
, 11... are spirals a12, 12... formed on them.
・ are wound in the same direction, and further rotated in the same direction.

A stop plate 13 is provided along the spiral rod IF on the outside of the spiral rod 11' located at the end of the spiral rod 11, 11, . . . in the rotational direction. In this embodiment, the vl rotary rods 11, 11, . A stop plate 13 is provided on the outside of the 1i12 rotating rod body 11'.

In the figure, reference numeral 14 denotes a straw swinging member for swinging the outer straws 2, 2, etc. on the spiral rods 11, 11. It is provided at the position where the end part is placed. The upper end surface of this straw swinging member 14 is formed with an appropriate number of ridged portions 15, 15, . . . for swinging the outer straw 2.

Further, from the vicinity where the insertion of the straws 1 and 2 inside and outside the straw conveying device 1o starts, to the straw one end forming device described later, the fitting of the outer straw 2 into the inner straw 1 is stopped at a fixed position. An outer straw stop plate 16 is provided to maintain its position. The position where 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 one end forming device which will be described later.

In the figure, reference numerals 20 and 21 are straw supply devices for supplying the inner and outer straws 1 and 2 to the above-mentioned straw conveying device 10. In this embodiment, 20 is for supplying the inner straw 1, and 21 is for supplying the outer straw. This is for supplying No. 2. That is, the inner straw 1 is supplied upstream of the outer straw 2. In the figure, reference numerals 22 and 23 are feed rollers, which have grooves on their outer peripheral surfaces that can receive straws, and are fitted into rotary fi 24 and 24 installed horizontally on the machine frame 9 of the double straw manufacturing equipment. It is movable.

The number of rotations of the feed rollers 22 and 23 and the stroke
The conveying speed of the conveying device 10 is adjusted so that the straws are placed on the spiral rods 11, 11, . . . at regular intervals and conveyed.

The foot roller 22 for the inner straw o-1 is provided with a knife 25 in an oblique direction with respect to the feed roller 22, and the feed roller 23 for the outer straw 1 is provided with a knife 26 in a perpendicular direction.

Therefore, the sharp portion 3 is formed at the tip of the inner straw 1 as described above. In this embodiment, as shown in FIG. 4, the straw is manufactured on two sides, the upper and lower sides, and the foot rollers 22 and 23 are integrated on the upper and lower sides, so the knife holder has a groove 27 formed therein. It is. Further, 28.28 is a rubber belt for holding the straw on the feed roller 22.23, so that the straw can be dropped to an appropriate position on the straw conveying device 10 and cut with a knife 25.26. It is.

Also, 29.29 shown in Figure 1 is a straw storage container,
From now on, feed rollers 22 and 23 will be fed with inner and outer straws 1.
, 2.

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

This straw one end forming device 30 includes a straw holding cylinder 32
, an inner straw mold 33, 33, which molds the end of the inner straw 1, an outer straw mold 34, 34, which molds the end of the outer straw 2, and an endless rubber belt. It consists of a straw fixing device 35.

The straw holding cylinder 32 has a number of grooves formed on its outer circumferential surface to receive straws, and the straws 1 and 2 can be 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 1 straw fixing device 35 connects the inner and outer straws 1 held in the straw holding cylinder 32.
Fix the holding position 2.

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 reduce the diameter of the end of the outer straw 2. A recessed portion 37 is formed into which the end of the outer straw 2 is fitted.

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, reference numerals 38, 38, . .37 is designed to engage and disengage from the ends of the inner and outer straws 1 and 2. That is, the ends of the inner and outer straws 1 and 2 are shaped when they are engaged, and the straws are opened when they are disengaged.

The ends of the straws 1 and 2 formed by the inner and outer straw forming molds 33 and 34 are as shown in FIGS. 12 and 13.
The shape is as shown in the figure. That is, the end of the outer straw 2 on the side where it is connected to the inner straw 1 is reduced in diameter to form a reduced diameter part 5, and the reduced diameter part 5 is further extended in an appropriate direction in the direction of extension of the inner straw 1. The tapered portion 6 is formed by extending the length. The inner diameter of this tapered portion 6 is approximately the same as the outer diameter of the inner straw 1 to the extent that sliding of the inner straw 1 is not hindered. Then, the diameter of the end of the inner straw 1 on the side where it is connected to the outer straw 2 is enlarged to form an enlarged diameter portion 7.

In the figure, numeral 40 denotes 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 IO.

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 the outer straw 2 are
Raw storage container 29.29 is fed. In this example,
Since double straws are manufactured with two sides, the straw material is the same length as two straws. The straw material supplied to the straw storage container 29.29 is continuously supplied to the feed roller 22.23, and during the rotation of the feed roller 22.23, the straw material is cut approximately in half. Ru. Since the knife provided on the foot 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 strokes 1 and 2 are rotated.
It will be supplied to the row conveyance device 10.

Inner and outer straws 1 supplied to the straw conveying device 10,
2 will be inserted during the IM transmission.

In this embodiment, in the lower manufacturing row in FIG. 4, the spiral grooves 12, 12, . Since it rotates, when the spiral rod ILII... rotates, the inner straw 1 and the outer straw 2 placed thereon move in the direction of the spark A in FIGS. 4 and 7. An inner straw 1 having a sharpened portion 3 formed by cutting the end portion diagonally with a knife 25 is inserted into the spiral rod body 11 by the feed roller 22 in a direction in which the sharpened portion 3 does not face the stop plate 13.
11... Supply the feed roller 23 or the outer straw 2 to an appropriate position on the downstream side. The inner straw 1 moves in the direction of the arrow mark 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. This results in a collision with the inner straw 1. However, since the inner straw 1 is being pushed into the spiral f ^ 2, 12, etc., it is rotating itself, and its sharp portion 3 is inside the inner circumferential surface of the outer straw 1 - 2. After being positioned, the outer straw 2 is inserted into the inner straw 1.

The principle of inserting the inner and outer throws 1 to 1 and 2 is as follows. In other words, the inner straw 1 is the outer straw 2.
If the sharp portion 3 is located inside the inner circumferential surface of the outer straw 2 when inserting the straw into the straw, the inner straw 1 can be easily inserted by simply pushing it. This is because the slope portion 4 on which the sharp portion 3 is formed is guided by the inner edge of the outer straw 2. On the contrary, if the inner straw 1 is pushed in when the sharp portion 3 is not positioned inside the inner peripheral surface of the outer straw 2, the sloped portion 4 will be guided by the outer edge of the outer straw 2. The inner straw 1 cannot be inserted. However, even if the sharp portion 3 is not positioned inside the inner peripheral surface of the outer straw 2, the outer diameter of the inner straw 1 is smaller than the inner diameter of the outer straws 1 to 2. Therefore, from the relevant position to the inner straw 1
If you rotate the angle appropriately, the sharp part 3 will surely align with the outer straw 2.
It will be located inside the inner peripheral surface of. “I want to,
A double straw can be assembled by rotating either the inner or outer straw while inserting the straw.

The straw swinging member 14 is provided, and when the outer straw 2 is positioned near the position where it contacts the inner straw 1, the straw swinging member 14 is provided with the outer straw 2.
so that the ends are guided. While the end of the outer straw 2 is guided by the straw swinging member 14, the end of the outer straw 2 on the fitting side moves up and down slightly. This makes it easy to insert. In this embodiment, in order to swing the outer straw 2, the straw swinging member 14 is provided in the middle of the conveyance path of the outer straw 2, but it may be placed in the middle of the movement path of the inner straw 1. .

The outer straw 2 inserted into the inner straw 1 is a straw.
After the end of the straw comes into contact with the outer straw stop plate 16 provided in the middle of the conveyance device, the insertion will not proceed and the insertion position to the inner straw 1 will be maintained. .

Then, while maintaining this position, it is transferred to the straw holding cylinder 32 of the straw one end forming device 30.

The straw sent to the straw one 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, etc., and is connected to the inner straw forming mold 33. The outer straw forming mold 34 engages 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, since the positions of the inner and outer straws 1 and 2 are fixed by the straw fixing device 35, the above-mentioned end portions can be formed smoothly.

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

As shown in the paper, the double straw manufacturing apparatus of the present invention has a spiral groove formed therein! A straw conveying device comprising a plurality of helical rods arranged in parallel, a straw supplying device for supplying inner and outer straws to the spiral rod at appropriate intervals, and a straw feeding device located downstream of the straw feeding device. and a straw end forming device that 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. ! 12 rotary rod rotating body! a! 7jI Inner and outer straws placed on the rod body
Since the straws are conveyed diagonally forward and inserted while rotating the inner and outer straws, it is possible to continuously and reliably manufacture double 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.
FIG. 2 is also 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, and 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 a cross-sectional view taken along line IX-IX in Figure 7, and Figure 1θ is the same <
- It is a sectional view along the X-line. FIG. 1I is a partially cut away view taken along the line M 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 a contracted state and Figure 13 showing a cross section of the left side in an extended state. ing. ■...Inner straw 2...Outer straw 9...Machine frame 10...Straw transport device 11...Spiral rod body 12...a! Spiral groove 13...stop plate
14...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 one end forming device 32...Straw holding cylinder 33...Inner straw mold 34...Outer straw mold 40...Straw Dispensing device Fig. 13 3

Claims (1)

[Claims] A straw conveying device comprising a plurality of spiral rod bodies each having a spiral groove arranged side by side, a straw supplying device supplying inner and outer straws to the spiral rods at appropriate intervals, and a straw supplying device comprising: a straw feeding device; The straw end forming device is located downstream and 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. A double straw manufacturing device characterized by conveying the inner and outer straws placed on the body obliquely forward and inserting the inner and outer straws without rotating them.