JP3380207B2 - Multistage straw manufacturing apparatus and manufacturing method - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a multi-stage straw for sucking a beverage in a beverage container, and more particularly to a multi-stage straw for preventing the beverage container from being depressurized during suction.

[0002]

2. Description of the Related Art Beverage products that can drink the beverage in the beverage container by inserting the straw into a sealed beverage container having a hollow inside and sucking the beverage are commercially available.
FIG. 10 is a view showing an example of a beverage product, and this beverage product 40 has a rectangular parallelepiped container body 42 having suction holes 41 formed on the upper surface and sealed with a plastic film or the like,
A two-stage straw 44 housed in a bag 43 and attached to the side surface of the container body 42. Here, the two-stage straw is a straw in which an inner tube and an outer tube having different diameters are elastically combined.

When drinking the beverage in the container body 42,
The inner tube 45 and the outer tube 46 are slid to extend the two-stage straw 44, and the plastic film that seals the suction hole 41 is pierced at the tip of the two-stage straw 44 to break the two-stage straw 44 into the container body 42. Then, the beverage in the container body 42 is sucked from the base end of the two-stage straw 44. However, when the two-stage straw 44 is normally inserted into the container body 42 and the beverage inside the container body 42 is sucked, the inside of the container body 42 is decompressed, and the container body 42 is deformed, making it difficult to drink, or sucking. When the process is interrupted or ended, the container body 4 is rapidly passed through the two-stage straw 44.
An unpleasant sound was generated due to the air entering the inside of 2.

Therefore, a straw having a groove along its longitudinal direction formed on the outer peripheral wall of the outer tube has been developed so far.
9-70574, JP-B 3-49570,
Japanese Patent No. 2582005, Japanese Patent Application Laid-Open No. 7-163450, Design Registration Number 9571695, Japanese Patent Application Laid-Open No. 7-22266.
No. 4, JP-A-7-222665, and JP-A-7-
It is proposed in Japanese Patent No. 322948. In the straw having such a groove, as shown in FIG. 11, a void 48 can be formed between the peripheral edge 47 of the suction hole 41 of the container body 42 and the groove 51 of the straw 50. Therefore, since air can be introduced even during suction, the container body 42
It is said that the inside can be prevented from being in a reduced pressure state, and the deformation of the container body 42 and the generation of unpleasant noise can be suppressed.

[0005]

However, since the groove 51 of the straw 50 is shallow, the peripheral edge 47 of the suction hole 41 and the
A void 48 formed between the straw 50 and the groove 51.
Is small and, in some cases, the peripheral edge 4 of the suction hole 41.
7 fits into the groove 51 of the straw 50, and the peripheral edge 47 of the suction hole 41 blocks the void 48 during suction,
It often happened that the inside of the container body 42 was in a reduced pressure state.

Therefore, according to the present invention, in a beverage container of the type in which a straw is inserted into a hole provided in a beverage container and aspirated, by preventing the interior of the beverage container from being depressurized during aspiration, it is easy to drink. and an object to provide an apparatus and a method for manufacturing a multi-stage stroke over which does not generate unpleasant noise.

[0007]

That is, in the multistage straw manufacturing apparatus of the present invention, two or more pipes having different diameters are telescopically combined so that the outermost outermost pipe is located outside.
One or more ridges are formed on the peripheral wall along its longitudinal direction.
This is a multi-stage straw manufacturing device, in which the outermost tube is inserted.
A plurality of pipe insertion grooves to be filled are formed on the outer peripheral wall along the axial direction.
By the rotating drum and the reciprocating motion of the cam mechanism
Insert into the outermost pipe in the pipe insertion groove and pull out from the outermost pipe
The outermost pipe surface exposed from the pipe insertion groove
One or more ridges are formed along the longitudinal direction at the corresponding positions.
The male rod and the groove corresponding to the ridge of the male rod.
A female roll having a plurality of female dies provided on the outer peripheral wall.
Of the male rod and the female roll.
The female roll is set so that the groove fits with the outermost tube sandwiched.
Positioned and the male rod and female roll are synchronized
It is characterized by doing. In addition, the multi-stage straw of the present invention
In the manufacturing apparatus of, the male rod has only one ridge.
Yes, there is only one female groove on the female roll.
Is desirable.

[0008]

In the method for manufacturing a multi-stage straw according to the present invention, two or more pipes having different diameters are stretchably combined, and the outermost outermost pipe is located at the outer peripheral wall along the longitudinal direction thereof. A method for manufacturing a multi-stage straw having two or more ridges, comprising the step of inserting the outermost tube into a tube insertion groove formed along the axial direction of the outer peripheral wall of the rotary drum. A step of inserting a male rod, in which one or more ridges are formed along the longitudinal direction at a position corresponding to the surface of the outermost tube exposed from the tube insertion groove, into the outermost tube; and ridges of the male type rod in the outer tube, and a step of fitting the groove of the female type provided on the female roll across the outermost tube possess,
The ridge of the male rod and the groove of the female roll are fitted with the outermost tube sandwiched between them.
Synchronize male rod and the female roll so as to focus and said Rukoto. In the method for producing a multi-stage straw of the present invention, it is preferable that the male rod has one ridge and the female roll provided on the female roll has one groove.

[0010]

BEST MODE FOR CARRYING OUT THE INVENTION The present invention will be described in detail below.
1 and 2 are views showing an example of a multi-stage straw obtained by the present invention. This two-stage straw 1
An inner tube 2 and an outermost tube 3 having different diameters are combined in a stretchable manner, and a ridge 5 is formed on the outer peripheral wall of the outermost tube 3 along the longitudinal direction thereof. Also, the outermost tube 3
A throttle portion 6 and a throttle portion 7 are formed at both ends of, and throttle portions 8 are formed on the tip end side in the middle of the outer tube.
Further, at the base end portion of the inner pipe 2, the inner pipe 2 is prevented from coming off from the throttle portion 6 and the throttle portion 7, and the throttle portion 8,
A stopper portion 9 is formed to prevent the two-stage straw 1 that has been stretched once from being contracted again by being caught by 8.

The length of the ridge 5 may be adjusted so that the ridge 5 comes into contact with the suction hole of the beverage container when the two-stage straw 1 is inserted into the beverage container, and is not particularly limited. However, from the viewpoint of practicality and manufacturing, the length is preferably 1/3 to 3/4 of the length of the outermost tube 3. If the length of the ridge 5 is less than 1/3 of the length of the outermost tube 3, the ridge 5 contacts the suction hole of the beverage container depending on the length of inserting the two-stage straw 1 into the beverage container. If the length of the ridge 5 exceeds 3/4 of the length of the outermost tube 3, there is a possibility that it will not occur, and the fitting at the connection portion between the inner tube 2 and the outermost tube 3 of the two-stage straw 1 There is a possibility that the sex will be weakened.

The height of the ridges 5 may be such that the ridges 5 can push and spread the suction holes of the beverage container when the two-stage straw 1 is inserted into the beverage container. Although not particularly limited, it is preferably 0.2 to 1.0 mm from the reference surface of the outer peripheral wall of the outermost tube 3 in terms of practical use and manufacturing. If the height of the ridge 5 is less than 0.2 mm from the reference surface of the outer peripheral wall of the outermost tube 3, the effect of pushing and expanding the suction hole of the beverage container may be insufficient. If the distance from the reference surface of the outer peripheral wall of the outermost tube 3 exceeds 1.0 mm, it becomes difficult to form the ridge 5. Here, the reference surface of the outer peripheral wall is the surface of the outer peripheral wall of the outermost tube 3 when the ridge 5 is not formed.

Examples of the material of the two-stage straw 1 include polyolefin resins such as polyethylene and polypropylene, polystyrene, ABS resin, paper and the like. Among them, polypropylene is preferable, and specifically,
A propylene homopolymer and a block or random copolymer of propylene and another α-olefin are preferably used.

In such a two-stage straw 1,
As shown in FIG. 3, when this is inserted into the suction hole 11 of the container body 10 of the beverage container, the ridges 5 cause the rim 1 of the suction hole 11 to move.
2 can be expanded to form voids 13, 13 between the outermost tube 3 and the peripheral edge 12 of the suction hole 11. Since the ridge 5 keeps the peripheral edge 12 of the suction hole 11 open, the peripheral edge 12 of the suction hole 11 does not fit into the outermost pipe 3 and block the voids 13, 13. Therefore, it is possible to prevent the inside of the container body 10 from being in a reduced pressure state, and suppress deformation of the container body 10 and generation of unpleasant noise.

In the illustrated two-stage straw, the outermost tube has one ridge, but the multi-stage straw of the present invention is not limited to this form. Alternatively, for example, the number of ridges may be two or more. However, since the effect of preventing the inside of the container body from being depressurized can be sufficiently exerted even with a two-stage straw having only one ridge, the number of ridges is It is preferably one. Further, the multi-stage straw of the present invention is not limited to the two-stage one as shown in the illustrated example, and may be a multi-stage straw having three or more stages.

Next, a multi-stage straw manufacturing apparatus of the present invention and a multi-stage straw manufacturing method using the same will be described. The multi-stage straw manufacturing apparatus of the present invention is, for example, a tubular inner tube 2 and outermost tube 3 having a predetermined length.
And a pipe forming device for forming the outermost pipe 3 as shown in FIG.
An outermost pipe processing device 20 for forming a ridge and an assembling device for combining the inner pipe 2 and the outermost pipe 3 to complete the two-stage straw 1 will be described. be able to.

As shown in FIGS. 4 and 5, the outermost pipe processing device 20 is provided with a frame 21 and a plurality of outermost pipes 3 provided on the frame 21 and supplied from a pipe forming device (not shown). A hopper 22 in which is stored and the frame 2
1, a plurality of pipe insertion grooves 24, 2 into which the outermost pipe 3 supplied from the supply roll 23 of the hopper 22 is inserted
4 are formed on the outer peripheral wall at equal intervals along the axial direction, a heating roll 27 (heating device) for heating the outermost tube 3 in the tube insertion groove 24, and the rotating drum 25.
A cam floor 31 (cam mechanism) fixedly provided on the frame 21 so as to cover the base end portion thereof, and reciprocated by the cam floor 31 to be inserted into the outermost tube 3 in the tube insertion groove 24 and the outermost tube. 3 capable of being pulled out from inside 3, female rolls 28 in which female dies corresponding to the male rods 26 are provided at a plurality of positions on the outer peripheral wall, an inner pipe and an outermost pipe. And a control box 30 for transporting the outermost tube 3 dropped from the rotary drum 25 to an assembly device (not shown) that completes the two-stage straw by combining the above. is there.

The cam floor 31 includes the rotary drum 2
5, a pair of a rod push-out guide 32 and a rod return guide 33, which are provided so as to cover the outer periphery of the rotary drum 25, are arranged at a distance such that they do not come into contact with the rotary drum 25. The rod push-out guide 32 and the rod return guide 33 are formed on the frame 21 so that a constant space 34 is formed between them.
It is fixed to the rotary drum 25 and is provided independently of the rotary drum 25 so as not to rotate together with the rotary drum 25.

As shown in FIG. 6, the male rod 26 is provided with one ridge 35 at a position corresponding to the surface of the outermost tube 3 exposed from the tube insertion groove 24. A roller 36 is pivotally supported at the base end of the roller 36. This roller 3
6 according to the rotation of the rotary drum 25, the rod push-out guide 32 and the rod return guide 3 of the cam floor 31.
3, the male rod 26 is reciprocated in the pipe inserting groove 24 by moving the male rod 26 in the outermost pipe inserting area A shown in FIG. Can be inserted into the outermost tube 3 or pulled out from the outermost tube 3.

As shown in FIG. 7, the female die roll 28 is provided with female dies 38, 38 ... Having a groove 37 corresponding to the ridge 35 of the male rod 26 at a plurality of locations on the outer peripheral wall at equal intervals. It is provided in. Then, the protrusion 35 of the male rod 26 and the groove 37 of the female roll 28 are fitted together,
The female roll 28 is arranged and the male rod 2
6 and the female roll 28 are synchronized.

Although there is one female groove provided on the convex strip of the male rod and the female roll in the illustrated example, one female groove is provided on the outer peripheral wall of the outermost pipe along its longitudinal direction. The number of ridges of the male rod and the number of female grooves provided on the female roll are not particularly limited to those shown in the drawings as long as the above ridges can be formed. However, if the number of ridges on the male rod and the number of female grooves provided on the female roll increases, it becomes difficult for the male rod to be pulled out from the outermost pipe. Since it becomes difficult, the number of the ridges of the male rod and the number of female grooves provided on the female roll is appropriately one.

Further, the cam mechanism is not limited to the cam floor in the illustrated example, and other forms may be used as long as they can reciprocate the male rod. The heating device is not limited to the heating roll of the illustrated example, and any other heating device may be used as long as it can heat the outermost tube 3. Further, on the outer peripheral wall of the rotary drum 25, a belt for preventing the outermost pipe 3 from falling does not come into contact with the heating roll 27 or the female roll 28 from near the supply roll 23 of the hopper 22 to above the belt conveyor 29. May be provided.

The two-stage straw 1 is manufactured by using the two-stage straw manufacturing apparatus as follows. First, the inner pipe 2 and the outermost pipe 3 having a predetermined length are formed in advance by a pipe forming device. The outermost pipe 3 supplied from the pipe forming device and accommodated in the hopper 22 is inserted into the outermost wall of the rotary drum 25 by the supply roll 23 along the axial direction thereof. Each one is inserted into the filling area A. As the rotary drum 25 rotates, the male rod 26 pushed out by the cam floor 31 becomes
As shown in FIG. 8, the outermost tube 3 exposed from the tube insertion groove 24
Is inserted into the outermost tube 3 so that the ridge 35 is located at a position corresponding to the surface of the.

Next, the outermost tube 3 inserted in the tube insertion groove 24 is heated by the heating roll 27 which is in contact with the rotary drum 25. After heating the outermost tube 3, the ridge 35 of the male rod 26 in the outermost tube 3 and the female die provided on the female roll 28 corresponding to the ridge 35 of the male rod 26 As shown in FIG. 9, the groove 37 of the outermost pipe 38 is fitted with the heated outermost pipe 3 so that the outermost wall of the outermost pipe 3 has a longitudinal direction as shown in FIG. One ridge 5 is formed along the line.

When the outermost tube 3 having the ridges 5 is formed at the lower part of the rotary drum 25, the male rod 26 inserted in the outermost tube 3 is moved from the outermost tube 3 by the cam floor 31. When it is pulled out, it falls onto the belt conveyor 29 below the rotary drum 25, and is conveyed to the next assembling apparatus by the belt conveyor 29, where the inner tube 2 supplied from the tube forming apparatus and the outermost one. The outermost tube 3 having the ridges 5 formed thereon is assembled by the tube processing device 20 to complete the two-stage straw 1.

The heating temperature of the outermost tube 3 by the heating roll is not particularly limited, but if the outermost tube 3 is heated to 70 to 80 ° C., the whitening phenomenon can be prevented. In the multi-stage straw according to the present invention, molding can be performed without a heating step of the outermost tube 3, but the use of the heating roll 27 has a preferable effect in terms of the appearance of the straw.

In the outermost pipe processing apparatus 20 and the method of manufacturing a two-stage straw using the same, the male rod 26 is inserted into the outermost tube 3 as the rotary roll 25 rotates. then <br/> combined and fit and a groove 37 of the female 38 provided with projections 35 of the male rod 26 on the female roll 38, since ridges 5 are molded Saisotokan 3 The two-stage straw 1 can be manufactured easily and efficiently.

[0028]

As described above, the apparatus for manufacturing a multi-stage straw according to the present invention has a plurality of tube insertion members in which outermost tubes are inserted.
A rotary drum in which grooves are formed on the outer peripheral wall along the axial direction,
By the reciprocating motion of the cam mechanism
It can be inserted into and removed from the outermost pipe.
One or more at the position corresponding to the surface of the outermost pipe exposed from the groove
A male rod in which a ridge of is formed along the longitudinal direction,
On the outer wall is a female die with grooves that correspond to the ridges of the male rod.
And a female roll provided at a plurality of locations on the male roll.
The ridge of the rod and the groove of the female roll are fitted with the outermost tube sandwiched.
So that the female roll is arranged and the male roll is
Inside the beverage container as the mold rod and female roll are synchronized
When suctioning the beverage of
Can be stopped, easy to suck the beverage in the beverage container,
Easy to use multi-stage straws that do not cause unpleasant sounds
In addition, it can be manufactured efficiently.

[0029]

The method for manufacturing a multi-stage straw according to the present invention comprises a step of inserting the outermost tube into a tube inserting groove formed along the axial direction of the outer peripheral wall of the rotary drum, and the tube inserting step. There is a step of inserting a male rod in which one or more ridges are formed along the longitudinal direction at a position corresponding to the surface of the outermost pipe exposed from the filling groove into the outermost pipe, and in the outermost pipe. and ridges of the male rod and the groove of the female type provided on the female roll possess a step of fitting across the outermost tube, and ridges of the male rod
Make sure that the groove of the female roll fits with the outermost tube in between.
Since in head and female methods rolls Ru synchronize, when aspirating the beverage in the beverage container, easily multistage straw that can prevent the beverage container is a vacuum,
And it can be manufactured efficiently. Further, if the male rod has only one ridge and the female groove provided on the female roll is one, the multi-stage straw can be manufactured more easily.

[Brief description of drawings]

FIG. 1 is a diagram showing an example of a multi-stage straw of the present invention, (a) is a top view, and (b) is a side view.

FIG. 2 is a cross-sectional view showing an example of the multi-stage straw of the present invention, (a) is a cross-sectional view of a state where an inner pipe is housed in an outer pipe, and (b) is a cross-sectional view of a stretched state. Is.

FIG. 3 is a top view showing a state in which the multi-stage straw of the present invention is inserted into a beverage container.

FIG. 4 is a schematic view showing an example of an apparatus for manufacturing a multistage straw according to the present invention.

5 is a side view showing the rotary drum as seen from the direction V of FIG. 4. FIG.

FIG. 6 is a perspective view showing a male rod of the multi-stage straw manufacturing apparatus of the present invention.

FIG. 7 is a perspective view showing a female roll of the multi-stage straw manufacturing apparatus of the present invention.

FIG. 8 is a perspective view showing a state where the male rod is inserted into the outer tube.

FIG. 9 is a cross-sectional view showing a state in which a ridge of a male rod and a female groove provided on a female roll are fitted with a heated outermost tube interposed therebetween.

FIG. 10 is a perspective view showing an example of a beverage container.

FIG. 11 is a top view showing a state in which a conventional multi-stage straw is inserted into a beverage container.

[Explanation of symbols]

1 two-stage straw (multi-stage straw) 2 inner tube 3 outermost tube 5 convex stripes 24 Tube insertion groove 25 rotating drum 26 Male Rod 27 Heating roll (heating device) 28 Female Roll 31 Cam floor (cam mechanism) 35 ridge 37 groove 38 female

─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Minoru Koyama 1-7-13 Shiba Koen, Minato-ku, Tokyo Within Showa Denko Plastic Products Co., Ltd. (56) Kosho 58-24255 (JP, B1) Registered utility model 3023252 (JP, U) (58) Fields investigated (Int.Cl. ⁷ , DB name) A47G 21/18

Claims (4)

(57) [Claims] 1. A multi-stage structure in which two or more pipes having different diameters are stretchably combined and one or more ridges are formed along the longitudinal direction on the outer peripheral wall of the outermost outermost pipe. A device used for manufacturing a straw, in which a plurality of pipe insertion grooves into which outermost pipes are inserted are formed on an outer peripheral wall along an axial direction, and a pipe is reciprocally moved by a cam mechanism. It can be inserted into the outermost pipe in the groove and can be pulled out from the outermost pipe, and one or more ridges extend along the longitudinal direction at positions corresponding to the surface of the outermost pipe exposed from the pipe insertion groove.
And a female roll having a plurality of female molds having grooves corresponding to the projections of the male rod provided on the outer peripheral wall of the male rod. And the female roll is arranged so that the groove of the female roll fits with the outermost tube sandwiched therebetween, and the male rod and the female roll are synchronized with each other. apparatus. Wherein a ridge is one of the male rod according to claim 1, wherein the multistage straw, characterized in that said a female roll on female groove has one provided Manufacturing equipment. 3. A multi-stage structure in which two or more pipes having different diameters are elastically combined and one or more ridges are formed along the longitudinal direction on the outer peripheral wall of the outermost outermost pipe. A method for manufacturing a straw, comprising a step of inserting an outermost pipe into a pipe insertion groove formed in an outer peripheral wall of a rotary drum along an axial direction thereof, and an outermost portion exposed from the pipe insertion groove. A step of inserting a male rod in which one or more ridges are formed along the longitudinal direction at a position corresponding to the surface of the pipe into the outermost pipe, and a ridge of the male rod in the outermost pipe. and a groove of the female type provided on the female roll possess a step of fitting across the outermost tube, ridges and grooves of the female roll the male rod fitted across the outermost tube
A method for producing a multi-stage straw, characterized in that a male rod and a female roll are synchronized so as to match each other . 4. The multi-stage straw according to claim 3, wherein the male rod has one ridge, and the female roll provided on the female roll has one groove. Production method.