JPH0524826B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to an apparatus for manufacturing a sliding type telescopic straw in which an inner straw and an outer straw are combined.

[Conventional technology]

In the past, various types of sliding telescopic straws consisting of an inner and outer straw have been proposed (in 1987-
(Japanese Utility Model Publication No. 21284, Japanese Utility Model Publication No. 59-66731), the straw is shortened and attached to a beverage container such as a paper pack, and when drinking, the straw is extended. A retainer to prevent the inner straw and outer straw from coming off is formed by expanding the diameter of one end of the inner straw and reducing the diameter of one end of the outer straw, and these are combined to form a sliding type telescopic straw.

Conventionally, devices for manufacturing such telescopic straws include a method in which a plurality of helical rods each having a spiral groove are arranged in parallel at the portion where the inner and outer straws are inserted into each other, and the helical rods are rotated. The inner and outer straws placed in these spiral grooves are conveyed diagonally forward, and while regulating the axial movement of one straw,
The inner and outer straws are rotated and inserted into each other, and a straw supply device and
Japanese Unexamined Patent Publication No. 197215/1989 discloses a device that includes a straw engaging end forming device that reduces or expands the diameter of the engaging end portions of the inner and outer straws.

[Problem that the invention seeks to solve]

In this way, a plurality of spiral rods arranged side by side are rotated to convey the inner and outer straws placed on it diagonally forward, and the inner and outer straws are rotated while regulating the axial movement of one of the straws. Since the inner and outer straws are made of synthetic resin, they are extremely lightweight and simply rest on the helical rod body, making them susceptible to vibrations and generating static electricity. Insertion errors often occur because the insertion action is performed while the insertion force is still applied, and the insertion ends bounce back against each other.

The present invention has been made in view of the above points, and is designed to prevent the straw insertion part from being easily affected by vibrations, and to avoid the effects of static electricity even if it occurs, thereby preventing mistakes in the insertion of the inner and outer straws. An object of the present invention is to provide a manufacturing device for a sliding type telescopic straw that can be assembled without removing the straw.

[Means for solving problems]

In order to achieve the above object, in the present invention, an inner straw supply device 4 and a straw supply device 3 are provided, and the inner straw 2 and the outer straw 1 supplied from the inner straw supply device 4 and the outer straw supply device 3 are provided. A conveyor is provided, and on the front side of the conveyor in the conveyance direction and in front of the inner straw supply device 4 and the outer straw supply device 3,
The outer periphery has a large number of positioning grooves 21a, b for accommodating the inner straw 2 and the outer straw 1 in a straight line, and the inner and outer straws are arranged in the positioning grooves 21a, 21b.
A straw insertion drum 21 having a straw positioning means for positioning the straw inside the straw is provided. A straw outer end pushing guide 25 for pushing the inner straw and outer straw from the outside and inserting the inner straw into the outer straw is provided at the outer end of the straw insertion drum 21.
1, the inner and outer straws are inserted into each other by a predetermined length. As the straw positioning means, the inner and outer straws are placed in the positioning grooves 21a and 21b.
It is advisable to use vacuum suction to localize the object.

[Effect]

By doing this, when the inner and outer straws that have been conveyed from the straw supply device via the transfer drum and the conveyor are transferred to the straw insertion drum, the inner and outer straws transferred and held in the positioning grooves of the inner and outer straws are The axis of the inner straw and the axis of the outer straw, which are held in the groove for the inner straw and the groove for the outer straw, respectively, are aligned and transferred, and the opposing inner and outer straws have their respective rear end surfaces. The straws are pushed by the outer end push-in guide and moved along the straw axis, and are pushed into each other by a predetermined length without any hindrance, ensuring that the inner and outer straws are in the inserted state. At this time, the inner and outer straws facing each other on the same axis have their outer peripheries regulated by grooves and are oriented using vacuum suction, etc., so they are less susceptible to vibrations.
Even if the straw is charged with static electricity during transportation, the inner straw can be reliably inserted and assembled into the outer straw without shifting its axis due to the influence. After that, after a predetermined length of insertion, the inner straw engaging end is expanded in diameter and the outer straw engaging end is expanded in diameter,
By storing the enlarged diameter part of the inner straw in the outer straw, it is possible to manufacture a sliding type telescopic straw with a high yield without making any mistakes during insertion.

〔Example〕

Embodiments of the present invention will be described based on the accompanying drawings.

FIG. 1 is a plan view of the main parts of the entire apparatus according to the present invention, and FIG. 2 is a front view showing the main parts of the entire apparatus.

In the figure, reference numeral 10a denotes a bucket conveyor for external straws, and since the manufacturing line for retractable straws is carried out in two rows in the embodiment, they are arranged outwardly in two rows on the left and right facing the conveyance direction on the upper surface of the base frame 50. There is.
In addition, screw conveyors 11 and 11' for diagonally conveying cut and bisected straws to the left and right (up and down in FIG. 1), bucket conveyors 10a and 10b for straight conveyance, a straw insertion device 20, and a straw engagement end, which will be described later. A portion forming device 30, an outer straw rear end diameter reduction processing portion, and the like are also provided on the upper surface of the base frame 50 as a set of left and right sets, respectively.

A hopper 5 for supplying the outer straw material 1' is disposed at the rear end of the upper surface of the base frame 50 in the straw conveying direction, and the outer straw element is transferred via transfer drums 14 and 15 provided at the front of the lower part of the hopper 5. 1' is transferred to an outer straw cutting and separating drum 7 for cutting and separating. Hopper 5 above
The transfer drums 14 and 15 are configured to store two pre-made outer straw materials 1' having a length, and the transfer drums 14 and 15 have grooves on their outer peripheries that can receive the straws, and are vacuum-operated. The drum is accommodated in a groove using suction or other means and transferred to the next drum using a guide (not shown). The outer straw cutting/separation drum 7 is an annular member having a concave groove formed on its outer periphery with a separation groove 7a in between to receive the outer straw material 1' or the divided outer straws 1, 1, and its inner surface is covered with three rollers. 17, and is driven counterclockwise by a drive gear 18 installed at the inner lower part. A disc-shaped cutter 9 is provided in front of the upper part of the outer straw cutting and separation drum 7 in a direction perpendicular to the drum 7, and a holding belt 13 holds the outer straw material 1'.
It is designed so that it can be held securely in the groove during cutting. The outer straw material 1' or the divided outer straw 1 is held on the drum by suction through an air intake hole (not shown) in the groove or by guide along the outer periphery of the drum. In front of the cutter 9 of the drum 7 for cutting and separating outer straws, a separator 19 for separating the cut outer straws 1, 1 into left and right sides is provided along the outer peripheral surface of the drum. In the embodiment, the drum 7 for cutting and separating the outer straws is formed to have a large diameter in consideration of the case where the outer straw 1 is later subjected to other processing (for example, to prevent the straw from returning). At the front lower part of the outer straw cutting and separation drum 7, there are straw transfer drums 16, 1 for transferring the separated outer straws 1, 1 by dropping them onto the screw conveyor 11 for obliquely conveying them in the left and right directions, respectively.
6 is provided. The screw conveyor 11
is a bucket conveyor 10a, 10a with two rows on the left and right.
A plurality of helical rods 12 each having a helical groove for an outer straw with the same winding direction and the same pitch are arranged side by side in a symmetrical manner, and a straw is dropped into the helical groove and placed by rotation of the helical rod 12. The spiral rods 12, 12 at the outermost ends are arranged along the side surfaces in the traveling direction of the bucket conveyors 10a, 10a, and are aligned with the grooves of the spiral rods 12. It is configured so that the bucket groove of the bucket conveyor 10a moves in the same phase.

In front of the outer straw supply device 3 consisting of the hopper 5, the drum 7 for cutting and separating outer straws, the straw transfer drums 14, 15, 16, etc., there is a hopper 6 for the inner straw material 2' and an inner straw. An inner straw supply device 4 consisting of a cutting and conveying drum 8, inner straw transfer drums 14', 15', 16', etc. is provided. The hopper 6 is configured to store in advance two inner straw materials 2' having sharp edges at both ends, and the inner straw cutting and conveying drum 8 has the inner straw materials 2' on its outer circumferential surface. A concave groove for receiving the drum 2' is formed, and a disc-shaped cutter 9 is provided in front of the upper part of the drum 8 in a direction perpendicular to the drum 8, and a cutter groove 8a is formed in the center of the outer peripheral surface. Further, a screw conveyor 11' is located below the transfer drum 16' at the front lower part of the inner straw cutting and conveying drum 8, and the inner straws 2 are moved diagonally by a plurality of spiral rods 12' for the inner straws arranged in parallel. It is designed to be transported forward.

On the other hand, inside the outer straw bucket conveyors 10a, 10a located at the outermost left and right parts of the upper surface of the base frame 50 (facing the conveyance direction), inner straw bucket conveyors 10b, 10b control the phase of each bucket. The spiral grooves of the outermost spiral rod 12' of the screw conveyor 11' for the inner straw and the bucket groove of the inner bucket conveyor 10b for the inner straw move in the same phase. The inner straw 2 that has been conveyed diagonally by the screw conveyor 11' is transferred to the inner bucket conveyor 10b without any hindrance, and then transferred to the outer bucket conveyor 1.
It is configured to be fed into the next straw insertion device 20 in the same phase as the outer straw 1 conveyed at 0a.

In the figure, 23 is a guide for guiding and regulating the outer straw 1 to the bucket conveyor 10a, and 24 is a guide for guiding and regulating the inner straw 2 to the bucket conveyor 10b.

A straw insertion drum 21 for inserting the inner straw 2 and the outer straw 1 into each other is provided above the transport end portions of the outer straw conveyor 10a and the inner straw conveyor 10b. The straw insertion drum 21 has positioning grooves 21a and 21b for receiving and positioning the outer straw 1 and the inner straw 2 so that the respective axes of the received outer straw 1 and the inner straw 2 coincide with each other. (See Figure 5, which is a partially enlarged side view of the positioning groove)
It is carved in a straight line on the outer circumferential surface of the drum (the third
6), each groove bottom is provided with an intake hole 22 for vacuum suctioning the received straw, so that the straw can be suctioned and positioned. Then, outer and inner bucket conveyors 10 are arranged to move in parallel in the same phase.
The buckets 10'a and 10'b of a and 10b are connected to the straw positioning groove 21 of the straw insertion drum 21 located above at the conveyance terminal end of the conveyor.
a and 21b, so that the outer straw 1 and the inner straw 2 are smoothly transferred from the bucket conveyors 10a and 10b to the straw insertion drum 21, respectively. Positioning grooves 21 are provided on both sides of the straw insertion drum 21.
A fixed cam facing the outer side surfaces of the inserting drums 21a and 21b for pushing the outer ends of the inner and outer straws 1 and 2 received and positioned in the positioning grooves of the insertion drum 21, respectively, and inserting the straws into each other. A straw outer end pushing guide 25 is provided, and when the insertion drum 21 rotates, the inner and outer straws 1,
2 are designed such that their outer ends are gradually pushed in to ensure smooth insertion. Regarding the gap between the outer straw 1 and the inner straw 2 at this time,
As an example, the outer diameter of the product's outer straw 1 is 5φ.
(tolerance: +0.1 to -0.2), and the outer diameter of inner straw 2 is 3.9φ (tolerance: +0.1 to -0.2), and if each wall thickness is 0.2 mm, the minimum inner diameter of outer straw 1 is The maximum outer diameter of the inner straw 2 is 4φ, and the minimum gap when inserting the straw is 0.4 mm, so it can be inserted without any problem.

The combination straw of the outer straw 1 and the inner straw 2 inserted for a predetermined length and held in the positioning grooves 21a and 21b of the straw insertion drum 21 is connected to a straw engagement provided adjacent to the straw insertion drum 21 in the straw conveying direction. The end portion of the guide 27 transfers the straw to the grooves of the outer straw holding drum 31a and the inner straw holding drum 31b, which are coaxially provided in the joint end forming device 30.

The straw engaging end forming device 30 has an outer straw holding drum 31a and an inner straw holding drum 31b on the inside, and an outer straw 1 on the outside thereof, on a rotating shaft 37 supported by a frame on the upper surface of the base frame 50. Outer straw molding molds 33a, 33 for molding the engaging end portions
a..., a pair of inner straw molding molds 33b, 33b... for forming the engaging end portions of the inner straw 2 are provided so as to be slidable in the axial direction on the circumference corresponding to the grooves of the straw holding drums 31a, 31b. The mold holding disks 32, 32 are provided so as to rotate integrally, and fixed cams 35, 35 are provided on the outside of the mold holding disks 32, 32 at the upper part facing each other,
When the straw holding drums 31a, 31b and the mold holding disks 32, 32 rotate together, the straw molds 33a, 3 are attached to the fixed cam 35 surface.
The rear end portions of the molds 3b are pressed together using roller means or the like, so that the heads of the molds 33a and 33b are engaged with and disengaged from the ends of the inner and outer straws 1 and 2 by movement of these molds on the circumference. It is configured. Further, a holding belt 36 faces the upper surface of the inner and outer straws that move on the circumference in correspondence with the straw end forming portions, so that the inner and outer straws are held and fixed during straw processing. The straws received in the grooves on the straw holding drums 31a and 31b are held by holding the outer periphery of the straw between the guide 27 (see FIG. 4) and the holding belt 36 on the circumference of the drum before and after the holding belt 36. It is regulated by a similar guide located symmetrically to the guide 27. The ends of the inner and outer straws 1 and 2 are formed when the straw mold is engaged with the straw, and the straws are opened when they are separated, but these molds 33a and 33
b, the ends of each of the straws 1 and 2 are as shown in FIGS. 8 to 9, the engaging side end of the outer straw becomes the reduced diameter part 1a, and the engaging side end of the inner straw becomes the reduced diameter part 1a. This is the enlarged diameter part 2a, and both the reduced diameter part 1a and the enlarged diameter part 2a are to such an extent that they can slide without any trouble when the straw is inserted and combined, and when the combined straw is extended, the enlarged diameter part 2a of the inner straw will be the same as that of the outer straw. It is designed to be formed in close contact with the inner surface of the inclined surface 1a' to the diameter portion 1a.

A transfer drum 42 is arranged at the front part of the carry-out side of the straw engaging end forming device 30, and the inner straw is transferred to the outer straw storage device 40 of the inner straw expansion part, and the transfer drum 42 is placed below the transfer drum 42 for carrying out. Position the rear end of the bucket conveyor 45, guide 41,
41', the rear end of the inner straw 2 of the combination straw being conveyed is pushed in and housed inside the outer straw. In addition, after the combined straws are transferred to the bucket conveyor 45, the upper surface of the outer straw of the combined straws is held by the belt 4 in preparation for the next process.
7 to press and convey it. Then, the tip of the inner straw, which has been pushed into the outer straw 1 and has a protruding tip, is held between the upper and lower surfaces by an inner straw pull-out roller 43 having spiral contact surfaces, and the inner straw 2 is pulled out by the rotation of the roller 43. The rear end of the outer straw 1 is brought into contact with the outer straw rear end diameter reducing drum 44, and the conical grooves 4 are formed at equal pitches on the circumferential surface.
The diameter of the rear end of the outer straw is reduced by moving in synchronization with the drum 44 having a diameter of 4', and then the tip of the inner straw is gradually pushed in by the guide 46, so that the inner straw is stored in the outer straw and carried out. ing. Furthermore, using the straw manufacturing apparatus of the present invention having the above-mentioned configuration, the process of cutting the straw material, inserting the inner and outer straws, and forming the ends of the inner and outer straws, etc., from the straw material to the finished product of the slide type telescopic straw, is used. The flow is shown in Figure 7.

Next, the operation of the sliding type telescoping straw manufacturing apparatus according to the present invention will be explained.

Outer straw materials 1' for two outer straws whose both end surfaces are vertical planes, which have been prepared in advance to a fixed size, are accommodated in the outer straw hopper 5, and on the other hand, the outer straw materials 1' for two inner straws whose both end surfaces are cut obliquely are accommodated. Inner straw material 2'
is stored in the inner straw hopper 6. Due to the operation of the machine, the outer straw material 1' is sequentially supplied from the hopper 5 via the transfer drums 14 and 15 to the outer straw cutting and separation drum 7, while the inner straw material 2' is similarly sequentially supplied from the hopper 6 to the transfer drum 7. The straw materials 1' and 2' are supplied to the inner straw cutting and conveying drum 8 via 14' and 15', and during the rotation of the outer straw cutting and separating drum 7 and the inner straw cutting and conveying drum 8, the straw materials 1' and 2' are /2 is disconnected. The pair of outer straws 1, 1 cut into two halves before the upper surface of the outer straw cutting/separation drum 7 are separated into left and right sides by a separator 19 by the rotation of the drum 7, and transported to a screwdriver located below from the transfer drum 16. The pair of inner straws 2, 2, which are supplied to the conveyor 11 and cut into two on the inner straw cutting and conveying drum 8, are conveyed by the rotation of the drum 8 to a screw conveyor located below the transfer drum 16'. 11'.
The inner and outer straws 1, 2 supplied to the screw conveyors 11, 11' are connected to spiral rods 12, 12' in the row left of the center (bottom in FIG. 1) in the direction of travel.
By counterclockwise rotation of the right-handed helical groove of , and by clockwise rotation of the left-handed helical groove of the helical rods 12 and 12' in the row to the right of the center (top in FIG. 1), the diagonal direction The outer straw 1 is transferred to the bucket conveyor 10a located outside the top surface of the base frame, and the inner straw 2 is transferred to the bucket conveyor 10b parallel to the inside of the bucket conveyor 10a. ，
The inner and outer straws 1 and 2 transferred to 10b are supplied to the straw insertion device 20 while maintaining the same phase.

In the straw insertion device 20, the buckets 10'a and 1 on the upper surface of the bucket conveyors 10a and 10b are
Outer straw 1 and inner straw 2 held at 0'b
is sucked into the positioning grooves 21a and 21b of the inner and outer straws, which are in the same phase as the bucket of the bucket conveyor, by the respective intake holes 22 on the surface of the straw insertion drum 21, which rotates in synchronization with the bucket conveyor, and is vacuum-adsorbed. The axes of the inner and outer straws coincide with each other. Next, as the straw insertion drum 21 rotates, the opposing inner and outer straws are gradually pushed in by a straw outer end pushing guide 25 whose outer ends are fixed to the base frame, and are smoothly inserted with their axes aligned. will be held. The inner and outer straws 1 and 2, which have been inserted into each other for a predetermined length, are placed in the straw holding drums 31a and 31b of the straw engagement end forming device 30 to form the straw engagement side ends while maintaining their combined state. The outer straw portion is transferred to the outer straw holding drum 31a, and the inner straw portion is transferred to the inner straw holding drum 31b.

The combined straw transferred to the straw engaging end forming device 30 is held in the grooves of the outer straw holding drum 31a and the inner straw holding drum 31b, and the outer surface is guided by the guide 27 along the circumference of the drum.
The straws are rotated and conveyed while being regulated by the straw holding belt 36, and during their circumferential movement, the outer straw molding mold 33a and the inner straw molding mold 33b facing the outer ends of the outer straw 1 and the inner straw 2 are moved, respectively. It is guided by fixed cams 35, 35 and engages with the ends of the combined inner and outer straws 1, 2, respectively, to expand and contract the diameters of the ends, respectively. During this diameter expansion and diameter reduction, the upper surfaces of the inner and outer straws 1 and 2 on the holding drums 31a and 31b are pressed and fixed by the holding belt 36, so that the diameter expansion and reduction can be performed smoothly.

The combination of inner and outer straws 1 and 2 that have finished expanding and contracting in diameter are transferred from the transfer drum 42 to the transport bucket conveyor 45, and on the way there, with the inner straw 2 being pulled out, the rear end of the outer straw 1 is contracted. Diameter is done and drained.

〔Effect of the invention〕

As is clear from the above description, according to the present invention, when manufacturing a sliding telescopic straw consisting of an inner straw and an outer straw, the insertion portions of the inner and outer straws are provided with a large number of positioning grooves on the outer periphery facing each other. Using a drum for inserting straws,
By aligning the axes of the inner and outer straws and forcibly regulating their positions, the straws can be inserted while being transferred.
It is possible to prevent insertion errors caused by vibrations, static electricity, etc. during insertion, thereby improving production efficiency.

In addition, with the conventional method of inserting a straw by rotating the inner and outer straws, it is necessary to control the position of the straw that will be inserted later because it does not allow the straw to be inserted longer than a certain length. Because of this, the inner and outer straws had to be fed in that order, and the center cut to feed the inner straws in two rows had to be cut diagonally.However, in the present invention, the inner and outer straws can be inserted on the drum. Because the system is forced by a guide, even if the supply section is arranged in the order of the outer straw and the inner straw, it can be inserted for a specified length and held sufficiently even on the end forming drum, and the center cut of the inner straw can be cut at a right angle. It can reduce the trouble when cutting on the drum.

Furthermore, in the conventional method of inserting the inner and outer straws while rotating, the positioning of the inner and outer straws during the diameter expansion and reduction processes is performed on the diameter expansion process side, while the outer straw is positioned on the opposite side from the diameter reduction process side. However, since both the inner and outer straws can be positioned based on the outer side, which is the processing side end, it is possible to maintain a constant distance from the mold to the straw, which is used to reduce or expand the diameter. The heating time of the mold, the processing time, and the amount of processing are constant, making it possible to perform highly accurate processing.This has the advantage of being able to prevent air leaks and liquid leaks at the straw engagement part, and other effects. be.

[Brief explanation of the drawing]

The drawings show embodiments of the present invention; FIG. 1 is a plan view of the main parts of the entire device according to the present invention,
The figure is a front view showing the main parts of the entire device, and Figure 3 is a
4 is a plan view of the straw insertion device, FIG. 5 is an enlarged side view of the groove G in FIG. 4, and FIG. 6 is a perspective view of the straw insertion drum. Figure 7 is a flowchart showing the straw manufacturing process using the apparatus of the present invention, Figures 8 and 9 are slide-type telescopic straws manufactured by the apparatus of the present invention, and Figure 8 shows the elongation of the telescopic straw. FIG. 9 is a side view of the telescopic straw in the shortened state. 1...Outer straw, 2...Inner straw, 3...
Outer straw supply device, 4...Inner straw supply device, 5, 6...Hopper, 7...Drum for cutting and separating outer straws, 8...Drum for cutting and conveying inner straws, 9...Cutter, 10a...Outer straw Bucket conveyor for inner straw, 10b... Bucket conveyor for inner straw, 11, 11'... Screw conveyor, 12, 12'... Spiral rod, 13, 36,
47... Holding belt, 19... Separator, 20
... Straw insertion device, 21 ... Straw insertion drum, 21a, 21b ... Straw positioning groove, 25 ... Straw outer end pushing guide, 3
0...Straw engaging end forming device, 31a...Outer straw holding drum, 31b...Inner straw holding drum, 33a...Outer straw forming mold, 33b...
...Inner straw mold, 35...Fixed cam, 40...
...Outer straw internal storage device for inner straw enlarged diameter part, 4
3...Inner straw pull-out roller, 44...Outer straw rear end diameter reduction drum, 45...Bucket conveyor for carrying out.

Claims (1)

[Claims] 1. An inner straw supply device 4 and a straw supply device 3 are provided at a predetermined interval back and forth in the straw conveyance direction, and the inner straw 2 is supplied from the inner straw supply device 4 and the outer straw supply device 3. A conveyor for conveying the outer straws 1 is provided, and the inner straws 2 and the outer straws 1 are arranged in a straight line around the outer periphery on the front side of the conveyor in the conveying direction and in front of the inner straw supply device 4 and the outer straw supply device 3. A straw insertion drum 21 is provided, which has a large number of positioning grooves 21a, b for accommodating the straws, and has straw positioning means for positioning the inner and outer straws in the positioning grooves 21a, b. A straw manufacturing device characterized in that a straw outer end pushing guide 25 is provided at the outer end for pushing the inner straw and the outer straw from the outside and inserting the inner straw into the outer straw. 2. The straw manufacturing apparatus according to claim 1, wherein vacuum suction is used as the straw positioning means to position the inner and outer straws within the positioning grooves 21a and 21b.