JPH0848308A - Automatic packaging machine for disposable chopstick - Google Patents

Abstract

PURPOSE:To eliminate the unfavorable appearance due to wrinkles and the slip in printing by a method wherein a lower film is bent along a recessed groove on the surface of a main drum, and a disposable chopstick is loaded on the lower film, and an upper film under a flat condition is put on the lower film, and the disposable chopstick is stored in a swollen part of the lower film. CONSTITUTION:A lower film 22 which is fed by a lower film-feeding means 20 is pushed in a recessed groove 14 on a main drum 10 by a pressing roller 30, and the lower film 22 is bent two-dimensionally and wound on the main drum 10. Then, an upper film 62 is put on the top, and an end sealing roller 70 is pressed, and the lower film 22 and upper film 62 are heat-sealed. Then, both side edges of the lower film 22 and upper film 62 are heat-sealed by a side sealing roller 80. Thus, only both side edges of the lower film 22 are put under a folded condition, and heat-sealed with the upper film 62. Also, a disposable chopstick can be stored in a swollen part Q on the lower film, and the upper film 62 does not bend, and the feeding quantity becomes uniform, and the slip of a printed part is eliminated.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an automatic disposable chopsticks wrapping machine in which disposable chopsticks are enclosed in a synthetic resin wrapping film.

[0002]

2. Description of the Related Art FIG. 10 shows a conventional automatic packaging machine in which disposable chopsticks are enclosed in a synthetic resin film. In the figure,
Reference numerals a1 and a2 are a pair of drums having rectangular recesses b formed on the outer peripheral surface at a constant pitch, and reference numerals c1 and c2 are supplied between the drums as the drums a1 and a2 rotate in the directions of the arrows. 2 shows a pair of packaging films made of synthetic resin.
Reference numeral d denotes disposable chopsticks loaded one by one between the films c1 and c2 from the loading machine e, and the films c1 and c2 are heat-sealed by sandwiching the drums a1 and a2, and the packaging as shown in FIGS. 11 and 12. Form.

[Problems to be Solved by the Invention]

However, according to the above automatic wrapping machine, it is effective for flat contents, such as seasoning paste, but for disposable chopsticks having a volume that creates a three-dimensional state,
Wrinkles f with an unspecified shape were formed at the corners, and it was easy for them to be unsightly (FIG. 11). Further, in this type of packaging machine, the packaging shape is not stable, and the films c1 and c2 are drums a1 and a2.
It was not always quantified in the meantime. As a result, even if printing was performed on the front surface side, the printed portion was gradually deviated and the appearance became worse. Furthermore, since the whole packaging film is rounded to wrap the contents, even if an attempt is made to give an automatic cut (or perforation) to each disposable chopsticks package, the reference point cannot be taken and the gap gradually changes. There was a defect that cut the wrapped bag. It was extremely difficult to lock the disposable chopstick package having the irregular roundness (fixing the reference point) at a predetermined position, because the feeding dimensions of the films c1 and c2 were not constant.

On the other hand, regarding the packaging of a volume product that creates a three-dimensional state, for example, with a food product such as tablets or ham, a thermoplastic sheet is deep-drawn by a vacuum suction mold and the contents are loaded into it, and the surroundings There was a packaging form to heat seal.
However, since these require a new deep drawing forming process and, in addition, a thick sheet must be used,
The packaging cost was high.

The present invention is intended to solve the above-mentioned problems, and while using the band-shaped resin film wound for packaging as it is, it does not have an unattractive appearance due to wrinkles, printing misalignment, and problems during automatic cutting. The purpose is to provide an automatic packing machine for disposable chopsticks.

[0006]

An automatic disposable chopsticks packaging machine according to the first aspect of the present invention has a main drum in which a plurality of concave grooves parallel to the rotation axis direction are formed at a constant pitch on an outer peripheral surface, and a constant width band made of synthetic resin. Lower film feeding means for feeding the lower film onto the outer peripheral surface of the main drum, and a projection which matches the above-mentioned concave groove are formed on the surface, and the lower film is rotated in a predetermined direction together with the main drum to bring the lower film onto the surface of the main drum by the projection. A pressing roller that bends along the two-dimensional direction, an alignment loading means that loads the disposable chopsticks one by one into the concave groove as the main drum rotates, and a synthetic resin-made constant-width strip-shaped top on the loaded disposable chopsticks. An upper film feeding means for feeding the film, an end seal roller which is pressure-bonded to the outer peripheral surface of the main drum to heat-seal the lower film and the upper film in the width direction, and both side edges of the lower film and the upper film are heat-sealed. ; And a side seal rollers to Le and Ji forward to the rotational direction around the main drum and characterized by being arranged aligned loading means and the end seal roller and the pressing roller. The automatic disposable chopstick wrapping machine of the second aspect of the present invention is the automatic disposable chopstick wrapping machine of the first aspect of the invention, wherein an intake hole is provided in the concave groove of the main drum, and the lower film is vacuum-sucked into the concave groove. The automatic disposable chopstick wrapping machine according to the third aspect of the present invention is the automatic disposable chopstick wrapping machine according to the first or second aspect of the present invention, including an alignment loading means for loading the toothpicks one by one into the concave grooves as the main drum rotates. Characterize.

The automatic disposable chopstick wrapping machine according to the fourth aspect of the present invention comprises a conveyor having a plurality of concave grooves formed at a constant pitch on the outer peripheral surface and having a constant pitch, and a constant width belt-shaped lower film made of synthetic resin on the outer peripheral surface of the conveyor. A lower film supply means for feeding to the above, and a pressing roller that is formed on the surface with a projection that matches the concave groove, rotates in a predetermined direction with the conveyor, and bends the lower film two-dimensionally along the surface of the conveyor by the projection. As the conveyor advances, an aligning and loading means for loading the disposable chopsticks into the concave grooves one by one, an upper film feeding means for feeding a synthetic resin constant-width upper film onto the loaded disposable chopsticks, and an outer circumference of the conveyor An end seal roller which is pressure-bonded to the surface and heat seals the lower film and the upper film in the width direction; and side seal rollers which heat seal both side edges of the lower film and the upper film. The conveyer surface sequentially applies in its traveling direction is characterized by being arranged aligned loading means and the end seal roller and the pressing roller.

[0008]

According to the automatic disposable chopsticks packaging machine of the present invention, the lower film is two-dimensionally bent along the concave groove on the surface of the main drum, the disposable chopsticks are loaded thereon, and the upper film is flat. As it is polymerized while maintaining the above, disposable chopsticks are stored in the bulge of the lower film. Since the upper film is fed flat without bending, there is no deviation in the printed portion, and irregular wrinkles do not occur. Further, if a cutter mechanism having a fitting groove that fits into the bulging portion of the lower film is provided, it is possible to correct the positional deviation from increasing due to the fitting with the bulging portion, so ensure automatic cutting. You can do it.
Also, according to the automatic disposable chopstick wrapping machine of the second aspect of the present invention, since the lower film is sucked into the concave groove by the suction hole, the two-dimensional bent shape of the lower film is stably formed, and the concave chopstick is firmly grooved when the disposable chopstick is loaded. Can be held inside. Further, by providing the aligning and loading means for supplying the toothpicks as in the third aspect of the present invention, it is possible to easily make the product in which the disposable chopsticks and the toothpicks are set. The automatic disposable chopstick wrapping machine according to the fourth aspect of the present invention replaces the main drum of the first aspect of the present invention with
A conveyor is used as a constituent element, and the same operation as that of the first invention works. Further, since the pressing roller, the aligning and loading means and the end seal roller can be arranged on the upper surface side of the conveyor, the reliability is high and the maintenance is easy.

[0009]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below in detail based on embodiments. (1) Example 1 FIG. 1 shows a vertical section of an automatic disposable chopstick wrapping machine for automatically packaging disposable chopsticks together with a toothpick. The arrangement of each functional unit will be briefly described. Reference numeral 10 is a main drum, reference numeral 20 is a lower film supplying means, reference numeral 30 is a pressing roller, reference numeral 40 is a toothpick alignment loading means, reference numeral 50 is a split chopstick alignment loading means, and a reference numeral. 60
Is an upper film supply means, 70 is an end seal roller, and 80 is a side seal roller. Around the main drum 10, the pressing roller 30 is arranged in the rotation direction thereof.
The alignment loading means 40, the alignment loading means 50, and the end seal roller 70 are arranged.

The main drum 10 has a hollow inside, and as shown in FIG. 3, is rotatably supported by a hollow rotary shaft 11 horizontally supported by the machine frame 1, and one end of the rotary shaft is supported. The gear 12 fixed to the motor is connected to a motor (not shown). On the outer peripheral surface of the main drum 10, a plurality of rectangular bar-shaped ridges 13 are provided at a constant pitch in parallel with the rotation axis direction, and a groove 14 is formed between the ridges 13, 13 ,. (FIGS. 2 and 4). Then, the intake hole 15 is provided in the groove 14, and the ventilation hole 16 is formed in the rotary shaft 11, so that the rotary shaft 1
One end of 1 is connected to a vacuum pump (not shown) through a rotary pipe joint 17 so that the inside of the drum can be maintained at a negative pressure (FIG. 3). By suction from the intake hole 15,
It is possible to maintain the uneven shape of the lower film 22 (described later) fed into the main drum 10. Reference numeral 18 is an electric heater provided in the main drum 10, and reference numeral 19 is a power supply roll provided at the other end of the rotating shaft 11 for supplying power to the heater 18. In addition, on the outer peripheral side surface of the ridge portion 13, a fine concave-convex pattern in a stitch shape is formed in order to give a stitch to the film surface by heat sealing described later.

The lower film supply means 20 includes a lower film 22 made of synthetic resin such as a polyethylene film having a constant width band wound around a reel 21, a guide roller 23, a pair of rewinding rollers 24 and 24, and a tension lever 25. , Is fed onto the outer peripheral surface of the main drum 10 via the guide roller 26 (FIG. 1).

The pressing roller 30 has a projection 31 formed on the surface thereof, which matches the concave groove 14 of the main drum 10. A gear (not shown) provided on the rotating shaft of the pressing roller 30 is meshed with the gear 12. As the main drum 10 rotates, it rotates in the direction of the arrow in FIG. 2 at the same peripheral speed. Then, the lower film 22 is pushed into the concave groove 14 by the projections 31, and the lower film 22 is two-dimensionally arranged along the concave and convex portions formed by the convex line portion 13 and the concave groove 14 continuous to the surface of the main drum 10. It is bent.

The aligning and loading means 40 is provided to load the toothpicks 41, which are one of the contents, into the concave grooves 14 one by one as the main drum 10 rotates (FIG. 2). The alignment loading means 40 is used for the main drum 1.
2, a loading drum 42 that rotates in the direction of the arrow at the same peripheral speed as 0, an alignment drum 43 that is arranged so as to rotate while contacting the outer peripheral surfaces of the loading drum 42, and a hopper 44. And a rotating brush 45 provided in the hopper 44. Then, the loading drum 42 and the alignment drum 43
A semi-circular recess 46 capable of holding the toothpick 41,
47 are formed at equal pitches, and the alignment drum 43 is formed.
The upper surface of the hopper faces the bottom of the hopper 44. Therefore, the toothpicks 41 in the hopper 44 are fitted one by one into the semi-circular recesses 47 of the alignment drum 43 and transferred to the semi-circular recesses 46 of the loading drum 42, and from the loading drum 42 to the main drum 10. The structure is such that the groove 14 is loaded. In order to prevent the rotating brush 45 from biting one or more toothpicks into the semicircular recess 47, the alignment drum 4
The surface of 3 is brushed. Further, arc-shaped guide pieces 48, 49 are provided on the machine frame 1 along the surfaces of the loading drum 42 and the aligning drum 43 to prevent the toothpicks 41 from falling off during movement.

Reference numeral 50 indicates an alignment loading means provided for loading the disposable chopsticks 51 one by one into the concave groove 14 of the main drum 10 (FIGS. 1 and 2). Alignment loading means 50
Is a loading drum 52 that rotates in the direction of the arrow in FIG. 2 at the same peripheral speed as the main drum 10, and the loading drum 52.
Slant gutter 53 provided above the slant gutter 53, a belt conveyor 54 provided in the slant gutter 53, a hopper 55 provided on the upper part of the slant gutter 53, and an alignment provided on the upper part of the belt conveyor 54. And a wheel 56. Ratchet wheel-shaped claws are formed on the outer peripheral surface of the loading drum 52 at a constant pitch, and a guide piece 58 extends from the lower end of the inclined gutter 53 along the claw surface of the loading drum 52. Further, reference numeral 56 is a claw wheel-shaped aligning wheel provided in the hopper 55 with a distance between the conveying surface of the belt conveyor 54 and the thickness of the disposable chopsticks 51, and loosens the mass of the disposable chopsticks in the hopper 55. The disposable chopsticks are prevented from being overlaid on top of each other on the belt conveyor 54. By rotating the aligning wheel 56 in the direction of the arrow, the disposable chopsticks 51 in the hopper 55 are fed side by side in a line on the belt conveyor 54, and are further fed through the guide pieces 58 to the loading drum 52. One is supplied between each nail. Therefore, the disposable chopsticks 51 sent by the belt conveyor 54 are
They are held one by one between the claws of the loading drum 52, and are loaded into the concave groove 14 of the main drum 10 by the rotational movement of the loading drum 52, and become together with the toothpick 41.

The upper film supply means 60 includes a guide film 63, an upper film 62 made of a synthetic resin such as a polyethylene film having a constant width band wound around a reel 61, a guide roller 63, a pair of rewinding rollers 64, 64, and a tension lever 65. , Through the guide rollers 66 and 67, onto the toothpick 41 and the disposable chopsticks 51 loaded in the concave groove 14, and is superposed on the lower film 22. If desired, the upper film 62 may be preprinted with a product name or the like.

The end seal roller 70 is a heat roller having an electric heater installed therein, and the outer peripheral surface thereof is the lower film 22.
And the upper film 62 on the ridge portion 1 of the main drum 10.
The lower film 22 and the upper film 62 are heat-sealed in the width direction at a constant pitch by being pressure-bonded to the sheet 3 (FIG. 2). Reference numeral 71 is a power supply roll of the end seal roller 70 (FIG. 3). Further, reference numeral 72 is a guide roller for guiding both the heat-sealed films to the next side seal roller 80.

The side seal roller 80 is composed of a pair of heat rollers. By sandwiching both side edges of the lower film 22 and the upper film 62 between these heat rollers, both side edges of both films 22 and 62 are heat-sealed to each other. To do.

Further, reference numeral 90 is a slitter provided to cut and align both side edges of the two films 22 and 62 heat-sealed as described above, and reference numeral 91 is the slitter 9.
The sandwiching rollers provided for pulling in both the films 22 and 62 to 0, reference numerals 92 and 93 denote scrap winding reels for winding the chips generated in the slitter 90. Reference numeral 94 denotes an automatic cutter portion 94 that cuts the widthwise sealed portions of the two films 22 and 62 that are heat-sealed by the end seal roller 70 to make a disposable chopsticks package K for each set of disposable chopsticks and toothpicks. A fitting groove 942 for accommodating the bulging portion Q formed by the lower film 22 is provided on the outer peripheral surface of the cut drum 941 related to the automatic cutter portion 94 (FIG. 5). A deep groove 943 is formed at the center of the adjacent fitting grooves 942, 942, and a cutter 944 cuts into the deep groove 943 to divide the disposable chopsticks package K one by one. Even when perforations are provided, the same handling can be performed by providing the fitting groove 942 as described above.

In the automatic disposable chopstick wrapping machine configured as described above,
Lower film 2 fed from lower film supply means 20
2 is pushed into the groove 14 by the pressing roller 30 on the surface of the main drum 10, and the lower film 22 is two-dimensionally bent and wound around the surface of the main drum 10 along the unevenness. Further, the contents such as the toothpick 41 and the disposable chopsticks 51 are loaded on the lower film 22 in a state where the suction holes 15 of the groove 14 are vacuum-sucked. Then, the upper film 62 is superposed on the end seal roller 70 and the ridge portion 1 is formed thereon.
By crimping to 3, the lower film 22 and the upper film 6
2 is first heat sealed in the width direction. Next, the side seal rollers 80 heat seal both side edges of the lower film 22 and the upper film 62. FIG. 6 and FIG. 7 show the disposable chopstick package S that has been heat-sealed in this manner. Thus, the lower film 22 is two-dimensionally bent, the contents are loaded on the lower film 22, and the upper film 62 is polymerized and heat-sealed, so that only the both side edges of the lower film 22 are folded into a Z shape. In this state, the upper film 62 is heat-sealed. Therefore, the appearance is improved without causing irregular wrinkles as in the past. In addition, the adhesion strength increases and the airtightness increases,
Since the disposable chopsticks can always be stored in the bulging portion Q formed by the lower film, the upper film 62 is hardly bent and the feeding amount is constant, so that the printed portion on the upper film can be prevented from being displaced.

In addition, since the suction hole 15 attracts the lower film 22 formed in a concave-convex shape by the pressing roller 30 to the concave groove 14, the disposable chopsticks while the lower film 22 is firmly held in the concave groove 14, The toothpick can be loaded reliably. The bulging portion Q formed by the concavo-convex shape of the lower film 22 has a substantially rectangular cross section, and a stable shape along the concave groove 14 is obtained. Therefore, the bulging portion Q is sequentially set in the fitting groove 942 of the automatic cutter 94. If it is possible, it is possible to obtain the disposable chopstick package K, K, ... Achieving automatic cutting of disposable chopsticks package K contributes to labor saving.

(2) Second Embodiment In this embodiment, the main drum 10 of the first embodiment is replaced with the conveyor 1.
This is an automatic disposable chopstick wrapping machine that is replaced with 00 (Figs. 8 and 9).
The same parts as those in the above-mentioned embodiment are designated by the same reference numerals, and the description thereof will be omitted. Conveyor 100
The belt 110 is held by grooved rollers 111 and 112, and a plurality of concave grooves 140 orthogonal to the traveling direction are formed on the outer peripheral surface thereof at a constant pitch (FIG. 9). The width of the groove 140 is slightly wider than the width of the lower film 22 having a constant width band, and
A convex portion 130 is provided between 0, 140, ... Then, both sides of the conveyor 100 are covered with covers, and the groove 1
40 is provided with an intake hole (not shown) so that the lower film 22 fed into the conveyor 100 can be formed into a concavo-convex shape by suction from the intake hole. Pressure roller 2
1, alignment loading means 40, 50, upper film feeding means 60
The configurations and functions of the above are basically the same as those of the first embodiment, and the belt 110 is on the upper surface side of the conveyor 100 from the right side in FIG.
The pressing roller 21 and the aligning and loading means 4 in the traveling direction of
0, 50 and end seal rollers 70 are arranged. Reference numeral 80 indicates a side seal roller. Other configurations are the same as those in the first embodiment.

In the automatic disposable chopstick wrapping machine constructed as described above, the lower film 22 is first pushed into the concave groove 140 by the pressing roller 21 and is two-dimensionally bent as in the first embodiment.
Then, since the lower film 22 having a concave shape is maintained by suction from the suction hole, the disposable chopsticks and the toothpick can be surely loaded. Thereafter, the upper film 62 is superposed on the lower film 22, the end seal roller 70 heat-seals the lower film 22 and the upper film 62 in the width direction, and then the side seal rollers 80 heat-seal both side edges thereof. It Thus, only the side edges of the lower film 22 are Z
A bulging part Q that is folded into a shape to store disposable chopsticks and toothpicks
As a result, the irregular wrinkles are eliminated (FIG. 6). Then, the bulged portion Q formed by the concave-convex shape of the lower film 22 is used for the automatic cutting feces (FIG. 5). Further, since the upper film 62 reaches the disposable chopstick package S while keeping the flat state, the printed portion arranged on the upper film 62 is not displaced. Further, since the conveyor 100 is used, the space between the constituent parts can be secured as compared with the first embodiment, so that the reliability of the device is improved and the maintenance is facilitated.

The present invention is not limited to those shown in the above embodiments, but can be variously modified within the scope of the present invention depending on the purpose and application. Main drum 10, lower film supply means 20, pressing roller 30, alignment loading means 50, end seal roller 70, side seal roller 80, conveyor 10
For 0 and the like, various shapes and dimensions can be selected according to the purpose.

[0024]

As described above, the automatic disposable chopstick wrapping machine of the present invention wraps the contents by bending only the lower film in a two-dimensional manner, so that it is possible to eliminate the fluctuation of the feeding amount of the upper film. The printed part on the upper film will not be misaligned and wrapped. Also, when dividing each disposable chopsticks package, the reference point is secured by fitting the bulging portion formed by the lower film, and automatic cutting and perforation do not occur. Further, even in the case of a three-dimensionally shaped content, it does not cause wrinkles toward the center as in the conventional case, and exhibits excellent effects such as improvement in product yield and quality.

[Brief description of drawings]

FIG. 1 is a vertical sectional view of an automatic disposable chopsticks packaging machine according to a first embodiment.

FIG. 2 is an enlarged view of a main part of FIG.

3 is a cross-sectional view taken along line XX of FIG.

FIG. 4 is a perspective view of the main drum of FIG.

FIG. 5 is an enlarged cross-sectional view of an automatic cutter unit.

FIG. 6 is a perspective view of a disposable chopsticks packaged by the automatic disposable chopsticks packaging machine according to the first embodiment.

7 is a cross-sectional view of the disposable chopsticks packaged product of FIG.

FIG. 8 is a vertical sectional view of an automatic disposable chopsticks packaging machine according to a second embodiment.

9 is an enlarged view of a main part of FIG.

FIG. 10 is a perspective view of a conventional automatic packaging machine.

FIG. 11 is a perspective view of a disposable chopstick package packaged by a conventional automatic packaging machine.

FIG. 12 is a sectional view of the disposable chopsticks packaged product of FIG. 11.

[Explanation of symbols]

 10 Main Drum 11 Rotating Shaft 14 Recessed Groove 15 Intake Hole 20 Lower Film Supply Means 22 Lower Film 30 Pressing Roller 31 Protrusion 40 Alignment Loading Means 41 Toothpicks 50 Alignment Loading Means 51 Split Chopsticks 60 Upper Film Supply Means 62 Upper Film 70 End Seal Rollers 80 Side seal roller 110 Conveyor 140 Recessed groove

Claims (4)

[Claims] 1. A main drum (10) having a plurality of concave grooves parallel to the rotation axis direction formed at a constant pitch on the outer peripheral surface, and a constant width belt-shaped lower film made of synthetic resin, which is extended onto the outer peripheral surface of the main drum. A film supply means (20) and a projection that matches the groove are formed on the surface, and rotate in a predetermined direction together with the main drum to press the lower film along the surface of the main drum to bend the film in two dimensions. Laura (3
0), an alignment loading means (50) for loading the disposable chopsticks one by one into the groove as the main drum rotates, and an upper film for feeding a synthetic resin constant-width strip-shaped upper film onto the loaded disposable chopsticks. A supply means (60), an end seal roller (70) that is pressure-bonded to the outer peripheral surface of the main drum and heat seals the lower film and the upper film in the width direction, and a side that heat seals both side edges of the lower film and the upper film. An automatic disposable chopstick wrapping machine comprising a seal roller (80), wherein the pressing roller, the alignment loading means and the end seal roller are arranged around the main drum in the rotational direction thereof. 2. The automatic chopstick chopstick wrapping machine according to claim 1, wherein an intake hole (15) is provided in the concave groove of the main drum (10) and the lower film is vacuum-sucked into the concave groove. 3. The automatic packing machine for disposable chopsticks according to claim 1 or 2, further comprising an aligning and loading means (40) for loading the toothpicks into the concave grooves one by one as the main drum rotates. 4. A conveyor (100) having a plurality of concave grooves formed at a constant pitch on the outer peripheral surface at a constant pitch, and a lower film supply means for feeding a constant width band-shaped lower film made of synthetic resin onto the outer peripheral surface of the conveyor. (20), and a pressing roller (30) formed on the surface with a projection that matches the concave groove, and rotating in a predetermined direction together with the conveyor to bend the lower film two-dimensionally along the surface of the conveyor by the projection. An array loading means (50) for loading disposable chopsticks one by one in the groove as the conveyor advances, and an upper film supply means (60) for feeding a synthetic resin constant-width strip-shaped upper film onto the loaded disposable chopsticks. ), An end seal roller (70) which is pressure-bonded to the outer peripheral surface of the conveyor and heat seals the lower film and the upper film in the width direction, and a side sheet which heat seals both side edges of the lower film and the upper film. An automatic disposable chopsticks packaging machine comprising a roller (80), and the pressing roller, an alignment loading means, and an end seal roller arranged on the conveyor surface in the traveling direction.