JPH10291507A - Device and method for separating continuously packaged bag - Google Patents

Abstract

PROBLEM TO BE SOLVED: To cut and separate continuously packaged bags which are formed of strip film, and on one side of which small bag parts are formed without operating any hole in the small bag part. SOLUTION: In a separating device of continuously packaged bags in which articles P are sealed, a small bag part Q which is swollen in a projected manner having lower strip films Fb with prescribed intervals in the longitudinal direction are formed, the articles P are stored in the small bag part Q, and a strip film Fa of flat upper side is lapped on the strip film Fb to seal the periphery of the small bag part Q. The separating device is provided with recesses 1 which are formed with the prescribed intervals on its outer circumferential surface and stores the small bag parts Q of the continuously packaged bags R, a deep grove 3 of the groove width W which is formed in a gate 2 between one recess 1 and its adjacent recess 1 and capable of freeing a tip part 9a of a lapped part 9 across the continuously packaged bags R and on each side of the lower strip film Fb , and a blade 4 to advance into the deep groove 3 in a retractable manner.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a separating device for a continuous packaging bag in which articles such as disposable chopsticks, spoons and the like are sealed at regular intervals in a synthetic resin band film, and a method for cutting the continuous packaging bag.

[0002]

2. Description of the Related Art The inventor of the present invention has previously filed a patent application for a disposable chopsticks automatic wrapping apparatus capable of wrapping articles such as chopsticks in a continuous form as shown in FIGS. 8 and 9 using a synthetic resin band film. JP-A-8-48308). Here, to form a pouch portion Q by bending in a convex shape one band film F _b in the longitudinal direction at a constant interval, for accommodating the articles P such as chopsticks P ₂ and toothpicks P ₁ in sachet portion With the belt film F
_b in polymerizing the other planar strip film F _a pouch portion Q
The article is sealed by heat sealing the periphery of the article. Continuous packaging bag R having such a packaging form
While using a flat film, the film is less likely to wrinkle in the main part and has a good appearance, and the sealability of the sealing part is maintained well. When printed, there are various advantages, such as that the printed portion is less likely to shift.

[0003]

However, in order to form the pouch portion Q from a flat film (see FIG. 10).
(B)), on both sides near the strip film F _b of the lower inevitably folded portion 9 as shown in FIG. 10 (b) is generated, which came out may be a problem in the rose cutting time. That is, as the pouch portion Q becomes larger, the folded portion 9 expands, and as shown in FIG.
When the pieces are cut along the line VII-VII, the folded portion 9 is cut, and a hole O (FIG. 12) is opened in the small bag portion Q, resulting in a failure. Furthermore, the heat seal width Z in the width direction of the continuous packaging bag R
In the case of FIG. 9, there is a case in which there is a sufficient margin for securing the sealing performance after cutting, and when the width Z is reduced, the above-described disadvantage is more likely to appear.

[0004] The present invention solves the above problems,
An object of the present invention is to provide a continuous packaging bag loosening device and a continuous packaging bag loosening method that can cut and cut a unique continuous packaging bag in which a small bag portion is formed by a band film without making a hole in the small bag portion. I do.

[0005]

In order to achieve the above object,
The gist of the invention according to claim 1 is to form a pouch portion that swells in a convex shape at regular intervals in a longitudinal direction of a lower band film,
A bulk cutting device according to a continuous packaging bag in which the articles are enclosed by accommodating the articles in the pouch portion, superimposing an upper flat band film on the band film and sealing the periphery of the pouch portion. And a recess (1) formed at regular intervals on the outer peripheral surface for accommodating the small bag portion of the continuous packaging bag and a weir located between the adjacent recesses. A deep groove (3) having a groove width capable of freeing the leading end of a folded portion formed on both sides of the lower band film crossing, and a blade material (4) which is made to be able to move forward and backward to advance into the deep groove. And a bulk packaging device for continuous packaging bags. The gist of the invention according to claim 2 is that a lower bag film is formed at regular intervals in a longitudinal direction to form a pouch portion that swells in a convex shape, and articles are stored in the pouch portion, and then the lower band film is formed. After heat-sealing the film and the upper band film at a constant pitch in the width direction, on both side edges of both films, the spot near the center forming the pouch portion is heat-sealed, and then
Using a continuous packaging bag in which articles are sealed by heat-sealing the entire side edges of both films and heat-sealing the periphery of the small bag portion, each small bag portion is placed in each recess of the continuous packaging bag cutting device. There is a method of cutting a continuous packaging bag into which the blade is stored and then the blade material is advanced into the deep groove. According to a third aspect of the present invention, the continuous packaging bag bulk cutting device further comprises a pressing body (5) which is capable of moving forward and backward and is pressed against the weir portions on both sides across the deep groove. It is characterized by.

According to the first aspect of the present invention, a recess for accommodating the small bag portion and a deep groove having a groove width capable of setting a free end portion of the folded portion are formed. Is provided so that the folded portion escapes even when the blade material advances, so that the continuous packaging bag can be cut without breaking the folded portion. As in the second aspect of the invention, when the both sides of both films are spotted and heat-sealed in the vicinity of the center where the pouch portion is formed, a folded portion is also formed at the center, so that the folded portions formed on both sides are small. That is, there is no fear that the folded portion is cut. Also,
The advantage that the groove width can be reduced and the seal allowance can be reduced. When the pressing member is provided as in the third aspect of the present invention, when the heat sealing portion is cut by the blade material, the pressing member presses both sides of the heat sealing portion, so that the tension of the blade material is increased. This makes it easier to cut loose pieces from the continuous packaging bag.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, a continuous packaging bag bulk cutting device and a continuous packaging bag bulk cutting method according to the present invention will be described in detail. FIGS. 1 to 7 show an embodiment of a continuous packaging bag loose-cutting device (hereinafter simply referred to as a "loose cutting device") and a continuous packaging bag loose-cutting method according to the present invention. FIG. 2 and 3 are main part side views, FIG. 4 is a main part perspective view, FIG. 5 is a main part plan view, and FIG. 6 is a cross-sectional view showing a procedure for forming another type of continuous packaging bag. FIG. 7 is an overall explanatory diagram from the production of the continuous packaging bag to the bulk cutter.

[0008] Prior to the description of the rose cutting apparatus of the present invention, first, the band film F _a, a brief description will be made on a continuous packaging bag R from F _b. The continuous packaging bag R is produced, for example, as follows using a manufacturing apparatus as shown in FIG.
-48308). Article P to be encapsulated here is the toothpick P ₁ and chopsticks P _2. First, pull out the strip film F _b of the lower side groove 51 corresponding to the pouch portion Q on the outer peripheral surface of the tape reel F ₁ to the main drum 50 formed at a constant pitch over the ridge portion 52. Then, by vacuum suction using a suction hole provided in the groove 51, to inflate the band film F ₁ in a convex shape in the groove 51 on the main drum. Thereafter, as the main drum 51 rotates in the direction of the arrow,
Toothpicks P ₁ from the hopper H ₁ into the grooves, also, the hopper H
₂ for supplying the disposable chopsticks P ₂ from. Next, the tape reel F ₂
From withdrawn above the strip film F _a, feeding on chopsticks P ₂ and toothpicks P ₁ is loaded into the groove, is polymerized in the lower zone the film F _b. Reference numeral 61 denotes a tension lever, and reference numeral 62 denotes a guide roller. Thereafter, the lower and upper films F _a and F _b are pressed against the ridges 52 by an end seal roller 63 in which an electric heater is provided, so that the two films are heat-sealed at a constant pitch in the width direction. ₁ (see FIG. 8). Subsequently, the lower and upper films F _a ,
Together heat sealing S ₂ both side edges of the two films by sandwiched a F _b between the side heat roller 64. Thereafter, the excess film 79 on both sides is cut off by the slitter 71 to complete the continuous packaging bag R in which the article P is sealed in the small bag portion Q as shown in FIGS. Reference numeral 72 denotes a scrap reel that winds up the scraps 79 of the slitter.

The continuous packaging bags R are then mechanically cut into packages K for each bag by the bulk cutting device of the present invention. The configuration of the bulk cutting device is as follows. The loosening device includes a recess 1 in which the small bag portion Q of the continuous packaging bag R is stored, a deep groove 3 formed in a weir 2 between the recess 1 and the recess 1, and advances into the deep groove 3. A blade member 4, a pressing member 5 straddling the weir portion 2 a across the deep groove 3,
Is provided.

Although the recess 1 may be formed on a flat surface, here, the recess 1 is formed on the outer peripheral surface of the cylindrical drum 6 in parallel with the rotation axis 7 of the cylindrical drum 6. The recesses 1 are provided at regular intervals so that the small bag portions Q related to the continuous packaging bags R are sequentially stored in the recesses 1 (FIG. 4). A suction hole 8 is appropriately provided on the bottom surface of each recess 1, and the small bag portion Q is easily stored in the recess 1 by suction under reduced pressure using the suction hole 8 (FIG. 1). This is because the rotation shaft 7 of the cylindrical drum 6 rotates intermittently, so that the recess 1 rotates intermittently at a predetermined speed.

The deep groove 3 is formed in the weir 2 on the outer peripheral surface of the drum, and is arranged so as to cross the continuous packaging bag R with a uniform cross section in the drum width direction (FIG. 5). Here, the groove width W of the deep groove 3
Has a width that allows the leading end portion 9a of the folded portion 9 relating to the lower band film Fb to be in a free state. This is because when cutting the continuous packaging bag R into the packaged products K for each bag with the blade member 4, the folded portion 9 reaching the small bag portion Q does not need to be cut (described later). Incidentally, folded portions 9, In particular, present in the region contributing to the ridge formed on both sides in the pouch portion Q of the band film F _b, the heat seal S ₂ is a wrinkle part noodles was.

The blade member 4 is a retractable cutter having a depth capable of crossing the continuous packaging bag R and cutting the continuous packaging bag R in the width direction. The blade member 4 is above the center line of the deep groove 3 at the time of retreat (FIG. 5). Then, the blade member 4 separates one package K from the continuous packaging bag R that has been put on the cylindrical drum 6 and advanced when the blade material 4 advances into the deep groove 3. In the present embodiment, the blade member 4
Is attached to the base 10 together with the pressing body 5, and the base 1
0 moves forward and backward by the expansion and contraction of the rod 12 related to the air cylinder 11.

The pressing body 5 has an elongated rectangular parallelepiped shape comparable to the width of the continuous packaging bag R, and has a rubber pressing portion 5a provided at the lower end thereof (FIG. 4). An upright bar 13 extends on the upper surface of the pressing body 5, and the upright bar 13 is inserted into a through hole of the base 10 and is locked to the base 10 by a stopper 14 at the tip. Since the upright bar 13 is attached to the base 10 with the spring 15 interposed therebetween as shown in FIG. 1, the upright bar 13 usually assumes a state in which the pressing body 5 is pushed down by the elastic biasing force of the spring 15. Under such a state, the lower surface of the pressing portion 5 a is located below the lower end of the blade member 4.

The blade member 4 and the pressing member 5 are positioned above the cylindrical drum 6 and, as described above, are set so that the blade member 4 comes directly above the deep groove 3 when stopped once by intermittent rotation of the drum. I have. When the air cylinder 11 is operated while intermittently rotating the cylindrical drum 6 on which the continuous packaging bag R is placed, the rod 12 is extended, and first, the pressing portion 5a of the pressing body 5 straddles the deep groove 3 and dams on both sides. Press against part 2a (FIG. 2). Further, the rod 12 is set to extend,
While the pressing portion 5a presses the weir portion 2a, the spring 15
The pressing body 5 is moved upward relative to the base body 10 against the urging force of. As a result, the blade material 4 which has been initially retracted advances below the pressing portion 5a, and the blade material 4 advances into the deep groove 3 (FIG. 3).

Next, a method of separating the continuous packaging bags R (hereinafter, referred to as a “separation method”) will be described, together with an explanation of the operation of the above-described separating device. First, the continuous packaging bag R
Prepare Forming a pouch portion Q below the strip film F _b, after storing the articles P in the sachet portion, the band film F
providing a continuous packaging bag R a heat seal S ₂ of both side edges was carried out in the width direction of the heat seal S ₁ and both films of the upper strip film F _a polymerization to pouch portion Q in _b. Then, the continuous packaging bag R is placed on the cylindrical drum 6 such that the small bag portion Q fits into the recess 1 while vacuum-suctioning through the suction hole 8 of the cylindrical drum 6 using a vacuum device (not shown). In FIG. 7, the loosening device is provided so as to be connected to the production of the continuous packaging bag R. However, the loosening device alone may be separated and independent.

Thereafter, the cylindrical drum 6 is rotated intermittently,
The air cylinder 11 is operated in synchronization with the intermittent operation. Specifically, when the cylindrical drum 6 temporarily stops due to the intermittent rotation of the cylindrical drum 6, the new deep groove 3 always advances immediately below the blade member 4. Then, after the new deep groove 3 appears just below the blade member 4, the air cylinder 11 is operated in conjunction therewith. The rod 12 is extended by the operation of the air cylinder 11. Then, press the heat sealing portion S ₁ in the width direction to be detach the packages K from a continuous packaging bag R abutting portion 5a holding down (Figure 2). The pressing portion 5a
Across deep groove 3 descends on the both sides of the dam portion 2a, pressing the heat seal portion S ₁ near the long side edge of the pouch portion Q to the dam portion 2a.

The rod 12 is still extended. Due to this extension, the pressing portion 5a hits the weir portion 2a, so that the pressing body 5 moves against the base 10 against the urging force of the spring 15.
, And the blade member 4 descends.
Then, the blade member 4 enters the deep groove 3, cutting the heat-sealed portion S ₁ (FIG. 3). At the point of time when the blade material 4 enters the deep groove 3, both ends of the pressing member 5 a and the weir portion 2 a are connected to each other with the heat seal portion S ₁ connecting the package K ₁ to the continuous packaging bag R stretched. Since it is sandwiched, the blade material 4 is
_{When you go to 1} , it is easily cut. On the other hand, since the tip portion 9a of the folded portion 9 is in a free state (a state in which it is not locked anywhere), the blade member 4 escapes even if the blade material 4 advances. Therefore, the folded portion 9 is not cut as in the related art. Thus, it is possible to cut the continuous packaging bag R into the packaged product K excellent in quality without making the hole O in the small bag portion Q.

By the way, if the height of the pouch portion Q is increased or if the width W of the deep groove cannot be increased, the hole O is also opened in the pouch portion Q when the blade material 4 advances into the folded portion 9. In some cases. The tip portion 9a of the folded portion 9 will not resting on dam portion 2a opposed, because thus taken pressed together with heat-sealed portion S ₁ when the pressing body 5 has descended. In such a case, the above problem can be solved by adding one step as shown in FIG. 6 in the step of manufacturing the continuous packaging bag R.

[0019] That is, after heat-sealed S ₁ and strip film F _a band film F _b and the upper lower in the width direction at a constant pitch (Fig. 6 (b)), at both side edges of the two films, sachets portion near the center to form the Q is to the dotted heat seal S ₃ (FIG. 6 (b)). The spotting is performed, for example, by pushing up a rod 21 having a heater at the tip. Next, heat sealing S ₂ is performed on both side edges of both films to complete the heat sealing around the small bag portion Q, thereby producing a continuous packaging bag R (FIG. 6).
(C)). Since the dotted heat seal is provided near the center, the folded portion 9 is also formed here. As a result, the folded portions 9 on both sides are shortened, the free state of the tip end portion 9a is ensured, and the perforation defect O is eliminated. After obtaining such a continuous packaging bag R, the small bag portions Q are stored in the respective recesses 1 of the continuous packaging bag cutting device and the blade material 4 is advanced into the deep groove 3 as described above. Is obtained.

[0020] configured rose cutting apparatus and rose cutting methods in this way, pouch portion Q is accommodated in the recess 1, and the width direction heat seal portion S ₁ connecting the pouch portions are both sides in dam portion 2a since sustained by overlying deep groove 3 and is advanced to the blade member 4 to the deep groove 3, it can be cut heat seal portion S _1.
At this time, since the distal end portion 9a of the folded portion 9 is in a free state, the folded portion 9 is not cut even when the blade member 4 advances into the deep groove 3. Further, when the advances the blade member 4 to a deep groove 3 while pressing the pressing body 5 in the dam portion 2a forming the deep grooves 3, the heat seal portion S ₁ on both sides are clamped by the pressing body 5 and the dam portion 2a since, during the cutting of the blade member 4 the heat seal portion S ₁ by, ready stretched over the heat-seal portion S _1, can be cut heat seal portion S ₁ comfortably. In this way, the problem of poor perforation due to the cutting of the folded portion 9 and the defect that the cut waste accumulates in the deep groove can be solved. In addition, after heat sealing in the width direction of the lower side of the strip film F _b and the upper band film F _a and the constant pitch, at both side edges of the two films, a point near the center to form a pouch portion Q with heat sealing S
₍₃₎ Then, using a continuous packaging bag in which articles are sealed by heat-sealing the entire side edges of both films and heat-sealing around the small bag portion Q, both sides of the packaged product are Since the folded portion is formed in the vicinity of the center, the folded portion 9 on both sides is reduced, and the problem of opening the hole O without increasing the groove width W of the deep groove 3 can be eliminated.

The present invention is not limited to the embodiment described above, but can be variously modified within the scope of the present invention depending on the purpose and application. The shape, size, etc. of the recess 1, the weir 2, the deep groove 3, the blade member 4, the pressing member 5, the folded portion 9, the package K, the continuous packaging bag R, the small bag portion Q, the article P, etc., according to the application. It can be selected as appropriate. The article P is not limited to the disposable chopsticks and the toothpick of the embodiment, but may be any object such as a spoon and a fork.

[0022]

As described above, the continuous packaging bag loose-cutting device and continuous packaging bag loose-cutting method according to the present invention are directed to a small bag portion in which a lower band film is convexly inflated at regular intervals in the longitudinal direction. When cutting a continuous packaging bag formed of
Since a hole is not formed in the pouch portion, it is extremely beneficial to prevent a product defect.

[Brief description of the drawings]

FIG. 1 is an overall side view of an embodiment of a continuous packaging bag loose cutting device according to the present invention.

FIG. 2 is a side view of a main part of FIG.

FIG. 3 is a side view of a main part of FIG. 1;

FIG. 4 is a perspective view of a main part of FIG. 1;

FIG. 5 is a plan view of a main part of FIG. 1;

FIG. 6 is a cross-sectional view illustrating a step of forming a continuous packaging bag of another embodiment.

FIG. 7 is an overall explanatory view from production of a continuous packaging bag to a bulk cutter.

FIG. 8 is a partial perspective view of a continuous packaging bag.

FIG. 9 is a sectional view taken along line VI-VI of FIG. 8;

FIG. 10 is an explanatory cross-sectional view of the periphery of a small pouch portion accompanied by loose cutting.

FIG. 11 is an explanatory perspective view of the periphery of a small bag portion accompanying the cutting of loose pieces.

FIG. 12 is a partial perspective view of a package cut by a conventional method.

[Explanation of symbols]

1 recess 2 dam 2a dam portion 3 deep groove 4 blade member 5 pressing body 9 folded portions 9a tip portion F strip film _a lower F _b upper strip film K package P article Q pouch portion R successive packaging bag S ₁ Heat seal (heat seal part) S ₂ heat seal (heat seal part) S ₃ point heat seal

Claims (3)

[Claims] 1. A lower bag film is formed at regular intervals in a longitudinal direction to form a small bag portion which bulges into a convex shape, and articles are stored in the small bag portion, and the upper band film is attached to the lower band film. A bulk cutting device for a continuous packaging bag enclosing the article by sealing the periphery of the small bag portion by polymerizing the small bag portion, which is formed at regular intervals on the outer peripheral surface and accommodates the small bag portion of the continuous packaging bag. The recessed portion (1) and the weir between the adjacent recesses are formed in the weirs, and the leading end portions of the folded portions formed across the continuous packaging bag and on both sides of the lower band film are free. A continuous packaging bag loose-cutting device, comprising: a deep groove (3) having a groove width capable of being moved, and a blade member (4) which is movable forward and backward to advance into the deep groove. 2. A lower bag film is formed at regular intervals in the longitudinal direction to form a pouch portion which bulges in a convex shape, and articles are stored in the pouch portion. Subsequently, the lower band film and the upper band film are formed. After the film and the film are heat-sealed at a constant pitch in the width direction, the both sides of both films are spotted and heat-sealed near the center where the pouch portion is formed, and then the heat sealing of both sides of both films is carried out. Using a continuous packaging bag in which articles are sealed by heat sealing the periphery of the portion, each small bag portion is stored in each recess of the continuous packaging bag cutting device, and then the blade material is advanced to the deep groove. How to cut loose packaging bags. 3. The continuous packaging bag loose-cutting device according to claim 1, further comprising a pressing body (5) which is movable back and forth and is pressed against the weir portions on both sides across the deep groove.