JP5009682B2 - Overhang bonding apparatus and method for box-shaped package - Google Patents

Abstract

A turret portion rotates intermittently while holding a boxlike package (F). In the bonding mechanism (10) of a stretching out portion bonding device, the boxlike package (F) is held by a retaining guide (31) while folding the top flap to the top surface and projecting the stretching out portion (4a) from each side face (7b). A moving mechanism (33) for moving a heater section (39) obliquely upward from a lower part is provided between the side face (7b) of the boxlike package (F) and the stretching out portion (4a). The heater section (39) is provided with two heater planes (42) at positions facing the side face and the stretching portion, respectively. Folding guides (28) are provided to descend on the side face while penetrating a pair of long holes provided in the retaining guide (31). After the side face and the stretching portion are heated on the heater plane, the folding guide (28) is lowered and the stretching out portion is folded and bonded to the fused portion of the side face. Thereafter, both the bonding portions are pressed from the outside by a pressing mechanism.With such an arrangement, the stretching out portion and the side face can be heated and bonded without forming a welding crease on the surface.

Description

  TECHNICAL FIELD The present invention relates to a box-shaped package overhang portion bonding apparatus and a welding method for bending and bonding a protruding portion of a flap portion that protrudes from a side surface of a box-shaped package body to the side surface of the box-shaped package body.

  Conventionally, in the above-described box-shaped package, for example, the top flap formed by closing and sealing the opening is folded to the upper surface of the box-shaped package, and in this state, the overhanging portions protruding outward from both side surfaces of the box-shaped package are folded. Thus, an overhanging portion bonding apparatus and an overhanging portion bonding method that are bonded to each side surface have been proposed.

As an example of such an overhang portion bonding apparatus and overhang portion bonding method, there is one described in Patent Document 1 below, for example.
In this overhanging portion bonding apparatus and method, the top flap formed by closing and sealing the opening of the box-shaped package is bent and welded to the upper portion thereof, so that the overhanging portions of the top flap protrude. And in the state which prevented the drooping by supporting the back surface of an overhang | projection part with a lower support bar, a preheating tool is made to contact | abut on both sides and it preheats and it is made a semi-molten state. Next, the overhanging portion is folded and folded with a folding tool, and further, the overhanging portion is pushed by a heating tool heated to such an extent that the outer surface of the overhanging portion is not melted, and welded to the side surface to cause welding wrinkles due to melting on the outer surface of the overhanging portion. I try not to let you.
Japanese Patent No. 3664389

However, in the overhanging portion bonding apparatus and overhanging portion bonding method described in Patent Document 1, the overhanging portion is supported from the back by a lower support bar, the side surface of the box-shaped package is preheated with a preheating tool, and the overhanging portion is further folded to the side surface. After that, since the side surface and the overhanging portion are pasted by indirectly heating with a heat that does not cause welding wrinkles from the outer surface of the overhanging portion, the adhesive surface side with the side surface of the overhanging portion can be heated sufficiently. However, there was a drawback that the adhesive strength was weak.
Moreover, the preheating of the side surface by the preheating tool and the heating from the outside of the overhanging portion by the heating tool must be performed in two steps, which has the disadvantage that the manufacturing process of the box-shaped package is increased and labor and cost are increased. .

  The present invention has been made in view of such circumstances, and an object thereof is to provide an overhanging portion bonding apparatus and an adhesion method that bond an overhanging portion and a side surface with sufficient adhesive force without forming weld wrinkles on the surface. To do.

The overhanging portion bonding apparatus for a box-shaped package according to the present invention is an overhang of a box-shaped packaging body in which the overhang portion of the flap portion that protrudes from the side surface of the box-shaped package body is bent and bonded to the side surface of the box-shaped package body. In the partial bonding apparatus, a heater unit that heats the side surface of the box-shaped package and the overhanging portion of the flap portion, a moving mechanism that supports the heater unit and can move obliquely with respect to the side surface and the overhanging portion, A folding guide that folds the overhanging portion to a heated side surface to bond the heating portions, and a pressing guide that extends in the overhanging direction of the overhanging portion and has a region through which the folding guide can pass. To do.
According to the present invention, the heater unit can heat the overhanging portion and the side surface of the box-shaped package, and even if the overhanging portion is inclined or drooped to the side surface, the moving mechanism moves obliquely. The heater part moves the overhanging part in a direction away from the side surface side or pushes it up, whereby both the overhanging part and the side surface can be heated simultaneously. Thereafter, the heated portions can be bonded together by bending the overhanging portion with a folding guide and contacting the side surfaces, and since the heated portion does not appear to the outside, the welded wrinkles do not appear on the surface and the appearance is good. In addition, when the moving mechanism is moved obliquely and the side surface and the overhanging portion of the box-shaped package are heated by the heater portion, the overhanging portion pressed by the heater portion receives a pressing force by the pressing guide provided on the back surface. Heating can be ensured without the overhanging portion escaping.
In addition, a flap part contains the top flap of a box-shaped package, a bottom flap, the flap of another site | part, etc. Moreover, a hole, a notch, etc. are included as an area | region through which a folding guide can pass in a pressing guide.

In addition, a pressing member that presses the protruding portion against the side surface in a state where the heated protruding portion and the heated side surface are bonded, and a receiving member that is provided at a position facing the pressing member on the inner surface of the box-shaped package. It is preferable to provide.
The side surface and the overhanging portion of the box-shaped package that has been heated and melted are more reliably welded by pressing between the pressing member and the receiving member while the overhanging portion is bent by the folding guide and in contact with each other. Is done.
In addition, a side flap adhesion mechanism may be provided in which a side flap formed by sealing the side surface is pressed against and adhered to the side surface before the overhanging portion is heated by the heater unit.
By pressing the side flaps against the side surface of the box-shaped package by the side flap bonding mechanism, the side flaps can be adhered to the side surfaces of the overhanging portion without being distorted when the overhanging portion is bent with the folding guide.

According to the method for adhering an overhang portion of a box-shaped package according to the present invention, an overhang of a box-shaped package body in which an overhang portion of a flap portion that projects from the side surface of the box-shaped package body is bent and bonded to the side surface of the box-shaped package body. In the part bonding method, the holding guide extends along the overhanging part of the flap part of the box-shaped package body, the heater part is moved obliquely to heat the side surface and the overhanging part, and the folding guide provided in the holding guide passes By moving the folding guide through the possible region, the heated overhanging portion is bent and pressed against the heated side surface to be bonded.
According to the present invention, the heater portion is moved obliquely, brought into contact with the side surface and the overhanging portion, heated and melted respectively, and even when the overhanging portion is pushed and escapes, the back is received by the holding guide. Therefore, the overhanging portion can be securely heated and melted by being sandwiched between the heater portion and the pressing guide, and then the heating portions can be bonded to each other by bending the overhanging portion with the folding guide and contacting the side surface.

  According to the overhanging portion bonding apparatus and bonding method for a box-shaped package according to the present invention, the heater portion is moved obliquely to heat both the side surface and the overhanging portion of the box-shaped package, so that the overhanging portion is inclined or sagging. Also, the heater part can be pushed up by the oblique movement and heated reliably, and no support is required. Further, since the overhanging portion is securely bonded to the side surface, the overhanging portion is not peeled off and the product quality is high. In addition, when the overhanging portion is heated, the surface to be bonded to the side surface is heated, so that the welded wrinkle is not exposed to the outside after bonding, and the appearance is good. In addition, since there is no need to preheat the overhang portion, the bonding process can be simplified.

Hereinafter, an overhanging portion bonding apparatus in a box-shaped package bag making apparatus according to an embodiment of the present invention will be described with reference to FIGS. FIG. 1 is a schematic view of a bag forming apparatus for a box-shaped package, FIG. 2 is a schematic front view of a turret part having an overhanging part bonding apparatus, FIG. 3 is a front view of the main part of the bonding mechanism, and FIG. 5 is a plan view of the holding guide, FIG. 6 is a view showing the positional relationship between the side surface of the box-shaped package and the heater, FIG. 7 is a plan view of the pressing mechanism, and FIG. 8 is a plan view excluding the cam portion of the pressing mechanism. FIG. 9 is a view showing a pressing member of the pressing mechanism, FIG. 10 is a view showing an adhesive portion on the side surface of the box-shaped package body pressed by the pressing member, and FIGS. 11A, 11B, and 11C are box-shaped members. It is a figure which shows the process of adhere | attaching the overhang | projection part.
The box-shaped packaging body bag making apparatus 1 shown in FIG. 1 feeds a belt-like film f from a film roll and bends it in the longitudinal direction. In the middle of the film f feeding process, the fastener 2 is fed from the roll. The fastener 2 is peeled off from the mated male part and female part in the middle, and is pasted along the folds on both sides of the fold line at the substantially center in the width direction of the film f. The male part and the female part of the fastener 2 are fixed along the longitudinal direction of the film f. The film f is folded in two at the crease, and the male part and the female part of the fastener 2 are fitted.
The folded film f is inserted with a cylindrical sleeve as a reinforcing material for each box-shaped package, and both side portions are heat-sealed in the width direction to form side flaps 3 and 3. Next, the top flap 4 is formed by heat-sealing the bent portion in the vicinity of the fastener 2. As a result, a bag-like member f <b> 1 having an opening formed at a position facing the top flap 4 is formed, individually cut, and supplied to the turret portion 5.
The bag-shaped member f <b> 1 is formed into a box-shaped package F at the turret portion 5. Next, after filling the contents from the opening at the bottom of the box-shaped package F, the opening is heated and sealed to produce a product. The overhanging portion bonding apparatus in the present embodiment is provided in the turret portion 5.

Next, the overhanging portion bonding apparatus 9 according to the present embodiment will be described with reference to FIGS.
The overhanging portion bonding apparatus 9 shown in FIG. 2 is provided with the side flap bonding mechanism 17, the bonding mechanism 10 of the overhanging portion 4 a (see FIG. 11), and the pressing mechanism 44 at the intermittent stop position in the circumferential direction of the turret portion 5. In the overhanging portion bonding apparatus 9, the turret portion 5 has a side flap receiving member 12 fixedly held around a circular base 11 at equal intervals, and a pair of holding plates 13 that can be opened and closed on both sides in the circumferential direction of the side flap receiving member 12. , 13 are arranged. The turret 5 rotates intermittently around the base 11, and is supplied at a proper rotation stop position in the circumferential direction with the supply position A1 and the box shape receiving the box-shaped package F on each side flap receiving member 12 and holding plate 13. And a discharge position A2 for discharging the package F.
At the supply position A <b> 1, the bag-like member f <b> 1 is sucked with a suction pad and spreads in a substantially box shape, and becomes a box-like package F and is fitted into the side flap receiving member 12 and the holding plate 13. In this state, the box-shaped package F is provided with a top flap 4 having a fastener 2 and a seal portion on the top surface 7a that comes into contact with the free end of the holding plate 13 (see FIG. 11).

  Here, the manufacturing process of the box-shaped package F is demonstrated based on FIG. In FIG. 11 (a), the box-shaped package F has a substantially box-like shape having side surfaces 7b and 7b facing the top surface 7a. The top surface 7a has a heat-sealed top flap 4 and its inner surface. And a fastener 2 provided in the housing. Side flaps 3 and 3 that are heat-sealed are provided on both side surfaces 7b and 7b, respectively. Incidentally, FIG. 4B is a view of the state in which the top flap 4 is bent on the top surface 7a and the overhang portions 4a and 4a protrude from the side surfaces 7b and 7b, and FIG. 5C is the overhang portions 4a and 4a. Is a view showing a state in which is adhered to the side surfaces 7b and 7b.

In the turret 5 shown in FIG. 2, the pair of holding plates 13 and 13 into which the box-shaped package F is fitted spread in parallel to hold the box-shaped package F in a box shape and intermittently rotate around the base 11. . One holding plate 13 has a receiving member 14 fixed in the vicinity of its free end. The receiving member 14 is formed in, for example, a plate shape extending from one side surface 7b to the opposite side surface 7b on the inner surface of the box-shaped package F (see FIG. 7). As will be described later, the receiving member 14 is used to receive the pressing member 51 and the pressing roller 29 that adhere to the protruding portion 4a on the side surface 7b and the heater surface 42 that heat-welds the side surface 7b.
A push-in mechanism 15 that pushes in the box-shaped package F is provided at a rotation stop position adjacent to the supply position A1. Even if the box-shaped package F is not sufficiently fitted into the holding plates 13 and 13 at the supply position A1, the box-shaped package F can be fitted into the holding plates 13 and 13 at appropriate positions by the push-in mechanism 15. .

At the next rotation stop position, a side flap adhering mechanism 17 for adhering the side flaps 3 and 3 to the side surfaces 7b and 7b of the box-shaped package F is provided. The side flap bonding mechanism 17 is provided with brackets 19 and 19 at positions close to the outside of the side surfaces 7b and 7b of the box-shaped package F, and heaters 20 and 20 are provided on the inner surfaces thereof. The brackets 19 and 19 are supported by the blocks 18 and 18. Inside the box-shaped package F, a side flap receiving member 12 is provided between the holding plates 13 and 13.
The side flaps 3 and 3 of the box-shaped package F are sandwiched between the heater 20 and the side flap receiving member 12 and are heat-welded to the side surfaces 7b and 7b. Thereby, the side flaps 3 and 3 are not distorted when the overhanging portions 4a and 4a of the top flap 4 described later are folded, and the overhanging portions 4a and 4a can be adhered beautifully.

An adhesion mechanism 10 for the overhanging portion 4a is provided at the next rotation stop position.
In the bonding mechanism 10 shown in FIG. 3, two bars 22 a and 22 b are disposed outside the box-shaped package F supported by the holding plates 13 and 13, and both ends are connected to the frame 23. A cylinder 25 is attached to the two bars 22a and 22b via a support plate 24 (see FIG. 4), and a rod 26 protrudes from the lower surface of the cylinder 25 toward the box-shaped package F so as to be able to advance and retract.
Plate-shaped bending guides 28 and 28 are connected to the rod 26 as folding guides through plates 26a, 26b and 26c connected to each other. As shown in FIG. 4, one corner of the lower end of each bending guide 28 is cut off, and a pressing roller 29 is rotatably supported. The pressing rollers 29 and 29 protrude slightly inward from the bending guides 28 and 28.

A plate-like pressing guide 31 is supported by the support plate 24 in the horizontal direction below the bending guides 28 and 28. The holding guide 31 is provided adjacent to the top surface 7 a of the box-shaped package F and extends along the top flap 4 of the box-shaped package F. The box-shaped package F has projecting portions 4a and 4a extending from the side surfaces 7b and 7b on both sides of the top flap 4 folded on the top surface 7a, and the holding guide 31 extends to the region of the projecting portions 4a and 4a. ing.
As shown in FIG. 5, a pair of long holes 31 a and 31 a are perforated in the pressing guide 31 at a slightly wider interval than between the opposing side surfaces 7 b and 7 b of the box-shaped package F. Or you may provide a notch etc. instead of the long hole 31a. When the bending guides 28 and 28 are operated by the operation of the cylinder 25, the bending guides 28 and 28 pass through the long holes 31a and 31a of the holding guide 31 and descend along the side surfaces 7b and 7b of the box-shaped package F to be heated. The overhanging portions 4a and 4a after bending are bent.

In FIG. 3, a pair of moving mechanisms 33, 33 disposed on both sides of the box-shaped package F are connected to the bar 22a.
The moving mechanism 33 is provided with a heater cylinder 35 at the end of a substantially L-shaped holding portion 34 fixed so as to be position-adjustable along the bar 22a. The cylinder 35 has a cylindrical body 36 that is inclined with respect to the side surface 7b of the box-shaped package F and is connected to the holding portion 34, and a rod 37 that can be advanced and retracted obliquely downward from the cylindrical body 36. A connecting plate 38 is fixed to the tip of the rod 37, and a heater block 40 is fixed to the other end of the connecting plate 38 via a heat insulating material 41.
The heater block 40 is formed in a substantially quadrangular cross section in FIG. 3, and the upper end corners thereof are chamfered so that the heater surfaces 42 and 42 are provided at an inclination angle of about 90 degrees. 39 is constructed. These two heater surfaces 42, 42 face the side surface 7 b of the box-shaped package F and the overhanging portion 4 a of the top flap 4, respectively. Therefore, when the heater cylinder 35 contracts the rod 37, the heater surfaces 42 and 42 of the heater block 40 come into contact with the side surface 7b and the back surface of the overhanging portion 4a to heat and melt.
In this case, the heating portion for heating and melting the side surface 7b and the overhanging portion 4a by the heater surfaces 42 and 42 is set at a position where they overlap each other when the overhanging portion 4a is bent by the bending guide 28. Therefore, the inclination angle of the heater block 40 and the angle in the oblique movement direction are preferably about 45 degrees with respect to the side surface 7b and the overhanging portion 4a before bending.

Next, in the turret unit 5 shown in FIG. 2, a pressing mechanism 44 is provided at the next rotational position. A pair of substantially arc-shaped side guides 43 and 43 are provided on both side surfaces 7b and 7b of the box-shaped package F held by the holding plates 13 and 13 so that the welded overhanging portions 4a and 4a are not peeled off. Has been. The side guides 43, 43 extend from the position of the bonding mechanism 10 to the next rotation stop position (for example, over a range of 90 °) across the pressing mechanism 44 in the circumferential direction of the turret portion 5.
The pressing mechanism 44 is a mechanism that presses the bonding portion p between the projecting portions 4a and 4a and the side surfaces 7b and 7b bonded by the bonding mechanism 10 to make the bonding more reliable.
In the pressing mechanism 44 shown in FIGS. 7 and 8, the substrate 45 having a substantially T-shape in plan view is fixed to the bars 49 a and 49 b, and the head 45 a of the substrate 45 is held by the bar 49 a and the holding plates 13 and 13. It is located between the box-shaped package F. As shown in FIG. 8, rotating members 46 and 46 having a substantially L shape in plan view are arranged on the head 45a of the substrate 45 so as to face each other. Each rotating member 46 includes a base portion 46a and an arm portion 46b. The base portion 46a is rotatably supported on the head portion 45a by a shaft portion 47, and a cam follower 48 is rotatably supported on an end portion of the base portion 46a. .
Further, a rod-shaped pressing member 51 is fitted to the arm portion 46b of the rotating member 46 and fixed with a fastening member such as a bolt. Each pressing member 51 is inserted through the insertion hole 43a drilled in each side guide 43 and presses the adhesive portion p of the overhanging portion 4a.
The support shaft 47 is fixed to a long hole 45b drilled in the head 45a, and the attachment position of the rotating member 46 can be adjusted according to the size and shape of the box-shaped package F.

7 and 9, a pressing cylinder 53 is fixed to the substrate 45, and a cam having a cam groove 56 a through a block 55 at the other end of a rod 54 that can be advanced and retracted provided in the cylinder 53. The part 56 is connected. Cam followers 48, 48 provided on the pair of rotating members 46, 46 are slidably inserted into the cam groove 56 a of the cam portion 56.
Therefore, since the cam followers 48 and 48 move in the same direction in conjunction with the cam portion 56 that moves toward the cylinder 53 by operating the cylinder 53 and contracting the rod 54, the rotating member 46 is centered on the shaft portion 47. The pressing member 51 presses the protruding portion 4a of the box-shaped package F against the side surface 7b through the insertion hole 43a of the side guide 43. A receiving member 14 provided on the holding plate 13 is disposed inside the box-shaped package F, and the pressing member 51 and the receiving member 14 sandwich the side 7b and the bonding portion p of the overhanging portion 4a to ensure adhesion. To.

The overhanging portion bonding apparatus 9 according to the present embodiment has the above-described configuration. Next, the overhanging portion bonding method will be described.
First, in FIG. 2, the bag-like member f1 processed with the film f is sucked by a suction pad (not shown) and spread from the bag-like shape, and the bag-like member f1 is held with its tip narrowed from the supply position A1 of the turret portion 5. Mounted on the plates 13 and 13. The bag-shaped member f1 becomes a box-shaped package F by spreading the holding plates 13 and 13 in a substantially parallel state.
Then, the turret portion 5 rotates intermittently around the base 11 by a predetermined angle (for example, 45 °) and stops. At the rotation stop position, the top portion 7a of the box-shaped package F held by the holding plates 13 and 13 is pushed by the push-in mechanism 15 to push the box-shaped package F into a predetermined position. As a result, even if the bag-like member f1 is not sufficiently pushed into the holding plates 13 and 13 at the supply position A1, it can be pushed to an appropriate position.
Next, when the box-shaped package F held by the holding plates 13 and 13 is further rotated by a predetermined angle, the side flap bonding mechanism 17 is mounted on the box-shaped package F in a stopped state. In this state, the side flaps 3, 3 provided on the both side surfaces 7 b, 7 b are pressed against the side surfaces 7 b, 7 b by the heaters 20, 20 and sandwiched between the side flap receiving members 12 and fixed.

Next, when the box-shaped package F held by the holding plates 13 and 13 is further rotated by a predetermined angle, it is held at the position of the bonding mechanism 10. In this state, the box-shaped package F is in the position shown in FIGS. 3 and 4, the top flap 4 bent on the top surface 7 a is pressed by the pressing guide 31, and the protruding portions 4 a and 4 a on both sides are also the same. Protrusively held.
When the cylinders 35 and 35 of the pair of moving mechanisms 33 and 33 are contracted in this state, the heater portions 39 and 39 are moved obliquely between the side surfaces 7b and 7b of the box-shaped package F and the overhanging portions 4a and 4a. And advance. At this time, even if the overhanging portion 4a hangs down due to its own weight or the like, the heater portion 39 moves obliquely upward. Therefore, the overhanging portion 4a is pushed up so that the heater surfaces 42 and 42 are brought into contact with the side surface 7b and the back surface of the overhanging portion 4a. Heat and melt.
Each overhanging portion 4a tends to escape when pressed by the heater surface 42, but comes into contact with the pressing guide 31 located on the opposite side, so that it can be sandwiched between the pressing guide 31 and reliably heated and melted. Thereafter, when the cylinders 35 and 35 are extended, the heaters 39 and 39 are retracted obliquely from the side surface 7b and the overhanging portion 4a.

  When the rod 26 is protruded by extending the cylinder 25 and the bending guides 28 and 28 are moved toward the box-shaped package F, the bending guides 28 and 28 are provided with the long holes 31a and 31a of the pressing guide 31. It penetrates and descends to both side surfaces 7b, 7b of the box-shaped package F. Then, after the plate-like bending guides 28 and 28 pass through the long holes 31a and 31a, the protruding portions 4a and 4a located on the back side of the pressing guide 31 are bent. Accordingly, the overhanging portions 4a and 4a are brought into contact with the side surfaces 7b and 7b, and the heating portions are bonded to each other. In particular, the bonding portion p where the heating portions of the overhang portions 4a and 4a and the side surfaces 7b and 7b adhere to each other is pressed by the pressing rollers 29 and 29 of the bending guides 28 and 28. Since the pressing roller 29 protrudes toward the side surface 7b from the surface of the plate-shaped bending guide 28, the adhesive portions p between the overhanging portions 4a, 4a and the heating portions of the side surfaces 7b, 7b are intensively pressed to each other. Can be bonded (see FIG. 4).

Thereafter, the cylinder 25 is contracted and the folding guides 28 and 28 are retracted to further intermittently rotate the turret portion 5 by a predetermined angle. At this time, the box-shaped package F held by the holding plates 13 and 13 rotates in a state in which the overhanging portions 4a and 4a are held by the side guides 43 and 43, so that the bonding portion p with the side surfaces 7b and 7b. Does not peel off carelessly. Then, it stops at the position of the pressing mechanism 44.
In this state, when the pressing cylinder 53 of the pressing mechanism 44 is contracted, the rod 54 is contracted to separate the cam portion 56 having the cam groove 56a from the box-shaped package F via the block 55. As a result, the cam followers 48 and 48 are interlocked so that the rotating members 46 and 46 are rotated around the shaft portions 47 and 47, and the pressing members 51 and 51 provided on the arm portions 46 and 46 are the side guides 43 and 43. The adhesion part p with the side surfaces 7b and 7b of the projecting parts 4a and 4a is pressed from the outside through the insertion holes 43a and 43a.
Since the receiving member 14 fixed to the holding plate 13 is disposed inside each side surface 7b, the receiving member 14 and the pressing member 51 are pressed between the side surface 7b and the adhesive portion p of the projecting portion 4a. .
This further ensures the adhesion between the overhang portions 4a and 4a and the side surfaces 7b and 7b.

And the overhang | projection parts 4a and 4a are pressed down by the side guides 43 and 43 to the position which the box-shaped package F hold | maintained at the holding plates 13 and 13 rotated only the predetermined angle. Next, the box-shaped package F held by the holding plates 13 and 13 reaches the discharge part A2 at a position rotated by a predetermined angle. Here, the holding plates 13, 13 are turned to the side flap receiving member 12 side and squeezed, and the box-shaped package F is adsorbed by a suction pad (not shown), whereby the box-shaped package F is removed from the holding plates 13, 13. Is discharged.
Then, in the next step, the contents are filled from the open bottom of the box-shaped package F, and a bottom flap is formed by heat sealing the opening. Next, the bottom flap is bent and welded to the bottom to complete the box-shaped package.

As described above, the overhanging portion bonding apparatus 9 according to the present embodiment causes the heater portion 39 to obliquely move upward with respect to the side surface 7b and the overhanging portion 4a of the box-shaped package F, so that the overhanging portion 4a may hang downward. Even if it pushes upwards, both the side surface 7b and the overhang | projection part 4a can be heated simultaneously, and the support bar etc. of the overhang | projection part 4a are not required. Moreover, since the overhang | projection part 4a is supported by the pressing guide 31, the overhang | projection part 4a can be heat-melted reliably.
In addition, both the side surface 7b and the overhanging portion 4a can be reliably melted and bonded with one heating without preheating, and the work is efficient. In addition, the overhanging portion 4a can be sufficiently heated and peeled off. The product quality is high. Since the portion heated by the heater 39 is the back surface of the overhanging portion 4a, the surface is not heated, and adhesion to the side surface 7b does not cause welding and wrinkles on the surface.
Furthermore, since the pressing mechanism 44 is provided, the overhang | projection part 4a can be adhere | attached more reliably.
Further, since the side flap 3 is bonded by the side flap bonding mechanism 17 prior to the bonding of the overhanging portion 4a, there is a possibility that the side flap 3 is bent and bonded by the overhanging portion 4a when the overhanging portion 4a is bent and bonded. In this respect, the quality of the product is high because the overhanging portion 4a can be cleanly adhered.

In addition, the overhang | projection part adhesion | attachment apparatus 9 by this invention is not limited to the above-mentioned embodiment, A suitable change is possible in the range which does not deviate from the meaning of this invention.
Although the overhanging portion bonding apparatus 9 according to the present embodiment includes the bonding mechanism 10 and the pressing mechanism 44, a side flap bonding mechanism 17 may be added. Alternatively, the overhanging portion bonding apparatus 9 may be configured by only the bonding mechanism 10, and the bonding of the bonding portion p between the side surface 7 b and the overhanging portion 4 a may be completed by the pressing roller 29 provided in the bending guide 28. . Alternatively, the overhanging portion bonding apparatus 9 may be configured by adding a side guide 34 to the bonding mechanism 10.
Moreover, the flap part which bends the overhang | projection part 4a of the box-shaped package F and adhere | attaches it on the side surface 7b is not limited to the top flap 4, A bottom flap and the flap of another part may be sufficient. Or the flap formed only by the bending which is not sealed may be sufficient.

It is the schematic of the bag making apparatus of the box-shaped package by embodiment of this invention. It is a schematic front view of the turret part which has an overhang | projection part adhesion | attachment apparatus. It is a principal part front view of an adhesion mechanism. It is a principal part side view of an adhesion mechanism. It is a top view of a pressing guide. It is a figure which shows the positional relationship of the side surface of a box-shaped package body, and a heater. It is a top view of a pressing mechanism. It is a top view except the cam part of the pressing mechanism. It is a figure which shows the pressing member of a pressing mechanism. It is a side view which shows the adhesion part of the box-shaped package body pressed with a pressing member. (A), (b), (c) is a figure which shows the process of adhere | attaching the overhang | projection part in a box-shaped package.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Bag making apparatus 2 Fastener 3 Side flap 4 Top flap (flap part)
4a Overhang portion 5 Turret portion 7a Top surface 7b Side surface 9 Overhang portion bonding apparatus 10 Adhesive mechanism 12 Side flap receiving member 13 Holding plate 14 Receiving member 15 Pushing mechanism 17 Side flap adhering mechanism 28 Bending guide (folding guide)
31 Pressing guide 33 Moving mechanism 39 Heater part 42 Heater surface 44 Pressing mechanism 46 Rotating member 51 Pressing member A1 Supply position A2 Discharge position f Film F Box-shaped package p Bonding part

Claims (4)

In the overhanging portion adhering device for the box-shaped packaging body, the overhanging portion of the flap portion that projects from the side surface of the box-shaped packaging body is bent and bonded to the side surface of the box-shaped packaging body.
A heater portion for heating the side surface of the box-shaped package and the overhang portion of the flap portion;
A moving mechanism that supports the heater part and is capable of moving obliquely with respect to the side surface and the overhanging part;
A folding guide that folds the heated overhanging portion to the heated side surface and bonds the heated portions;
An overhanging portion bonding apparatus for a box-shaped package, comprising a pressing guide extending in the overhanging direction of the overhanging portion and having a region through which the folding guide can pass.   In a state where the heated overhanging portion and the heated side surface are bonded, a pressing member that presses the overhanging portion against the side surface, and an inner surface of the box-shaped package body that is provided at a position facing the pressing member. The overhang | projection part adhesion | attachment apparatus of the box-shaped package body of Claim 1 provided with the receiving member.   The box-shaped package according to claim 1 or 2, further comprising a side flap bonding mechanism for pressing and bonding a side flap formed by sealing the side surface against the side surface before heating the overhanging portion with the heater unit. Overhang part bonding device. In the method of bonding the protruding portion of the box-shaped package body, the protruding portion of the flap portion that protrudes from the side surface of the box-shaped package body is bent and bonded to the side surface of the box-shaped package body.
A pressing guide extends along the protruding portion of the flap portion of the box-shaped package,
The heater part is moved obliquely to heat the side face and the overhang part,
A box characterized in that the heated guide is bent and pressed against the heated side surface by moving the folding guide through an area through which the folding guide provided in the holding guide can pass. A method for adhering an overhang portion of a package.

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