JP3464814B2 - Spout forming device in packaging machine - Google Patents

Description

Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a spout forming apparatus for a packaging machine. 2. Description of the Related Art Conventionally, when manufacturing a brick-type packaging container filled with liquid foods such as milk and soft drinks, a flexible laminate is used in a packaging machine. Is continuously formed into a tube while transporting the web-like packaging material, and a liquid food is filled in the tubular packaging material to manufacture a packaging container. [0003] For this purpose, a web-like packaging material manufactured by a packaging material manufacturing machine is set in a packaging machine in a reel state, fed out by a feeding machine, and conveyed through the packaging machine.
The tube is sealed vertically. The liquid food is supplied from above while the tubular packaging material is conveyed downward, and is filled in the packaging material. Next, the packaging material is sandwiched between the sealing jaws from both sides, and sealed laterally at predetermined intervals to form a prototype container such as a pillow (pillow) shape or a bag shape. [0004] Subsequently, the portion sealed in the lateral direction is cut, and each prototype container is formed into a predetermined shape along a preformed fold, thereby completing a plurality of packaging containers accommodating a predetermined amount of liquid food. I do. In this case, in a small-sized packaging container, a spout is formed at a predetermined position on the top wall of the packaging container to pour out the stored liquid food, and a pull tab is attached to the spout. It has become. Therefore, the pull tab is peeled off when drinking
The spout can be opened by peeling. [0005] By the way, the web-like packaging material before being set in the packaging machine is subjected to exterior printing on a portion corresponding to the surface of the packaging container, and is formed at predetermined intervals in the packaging material. And a spout is formed. For this purpose, the packaging material manufacturing machine has a printing device and a spout forming device. During the manufacturing process of the web-shaped packaging material, the printing device performs exterior printing on a portion corresponding to the surface of the packaging container by the printing device. In addition, a forming fold is formed at predetermined intervals by a spout forming device, a punch hole is formed, and an inner seal and a pull tab are attached to correspond to the punch hole. [0006] However, in the above-mentioned conventional packaging material manufacturing machine, the operation speed of the printing apparatus for performing exterior printing on the packaging material is high, but the spouting port is used for the packaging material. The operation speed of the spout forming device for forming
The printing apparatus must be operated in accordance with the operation speed of the spout forming apparatus, and the productivity of the packaging material is reduced. The present invention solves the problems of the spout forming device in the conventional packaging material manufacturing machine and provides a spout forming device in a packaging machine capable of improving the productivity of the packaging material. Aim. [0008] For this purpose, in a spout forming apparatus in a packaging machine according to the present invention, a punching apparatus for forming a punch hole for each length of one packaging container on a packaging material. An inner seal sticking device that is disposed downstream of the punching device in the transport direction of the packaging material and sticks an inner seal to the punch hole; and the inner seal sticking device in the transport direction of the packaging material. A pull-tab sticking device that is provided further downstream and sticks a pull tab to the punch hole, a creaser that forms a fold in the packing material, a brake device that stops the packing material, and a packing material that is provided by the brake device. And a feed amount adjusting device that adjusts the feed amount of the packaging material in a state where is stopped. According to the present invention, according to the present invention, in the spout forming apparatus for a packaging machine, as described above, a punch hole is formed for each length of one packaging container on a packaging material. A punching device for forming an inner seal sticking device, which is disposed downstream of the punching device in the conveying direction of the packaging material and sticks an inner seal to the punch hole, and A pull tab attaching device that is disposed downstream from the inner seal attaching device and attaches a pull tab to the punch hole, a creaser that forms a fold in the packaging material, and a brake device that stops the packaging material, A feed amount adjusting device that adjusts a feed amount of the packaging material in a state where the packaging material is stopped by the brake device. In this case, no punch hole is formed in the packaging material before being set in the packaging machine, and neither the inner seal nor the pull tab is attached. In addition, no fold is formed. Therefore, in the packaging material manufacturing machine, it is only necessary to perform exterior printing on the packaging material, so that the operation speed of the printing apparatus can be set high, and the productivity of the packaging material can be improved.
Also, since the feed amount of the packaging material can be adjusted by the feed amount adjusting device, the fold can be formed from an appropriate position of the packaging material. Embodiments of the present invention will be described below in detail with reference to the drawings. FIG. 1 is a schematic view of a spout forming apparatus for a packaging machine according to an embodiment of the present invention. As shown in the figure, the web-like packaging material 11 is set on a packaging machine in a state of a reel 12, fed out by a feeding machine (not shown), and conveyed in the packaging machine. The wrapping material 11 is formed of a laminate in which polyethylene is coated on both sides of a paper base material, and a barrier layer made of aluminum foil (foil) or a barrier resin is formed as required. The outer packaging is printed on the portion corresponding to the surface of the packaging container, but the fold for molding is not formed. Therefore, the operation speed of the printing device (not shown) can be set arbitrarily, so that productivity can be improved. After the packaging material 11 is fed by a feeding machine, the turn roller 14, the dancer roller 15, the offset roller 16, the feed roller 17, and the magazine roller 1
8, etc., to the punching device 20. In addition, 21
Is a mark sensor. The punching device 20 is for forming a punch hole (not shown) for use as a spout at a set location of the packaging material 11, as shown in FIG. Is arranged. In the present embodiment, as will be described later, a fold of two packaging containers is formed on the packaging material 11 by a pair of crease rollers. Therefore, it is necessary to form a pair of punch holes each time the packaging material 11 is stopped. For this purpose, a pair of punch devices 20 are also provided along the transport direction of the packaging material 11. On the downstream side of the punching device 20, a pair of inner seal sticking devices 22 are provided along the conveying direction of the packaging material 11. Then, an inner tape 24 made of polyethylene is fed from the inner tape reel 23 of the inner seal sticking device 22 and is conveyed in a direction perpendicular to the conveying direction of the packaging material 11, and is not shown in correspondence with the punch holes. An inner seal is attached from the back side of the packaging container. Further, a pair of pull tab attaching devices 25 are provided downstream of the inner seal attaching device 22 along the conveying direction of the packaging material 11. Then, a pull-tab tape 27 formed by coating aluminum foil with polyethylene is fed out from a pull-tab reel 26 of the pull-tab sticking device 25, and is conveyed in a direction perpendicular to the conveying direction of the packaging material 11, and A pull tab (not shown) is attached from the front side of the packaging container so as to correspond to the hole. Further, on the downstream side of the pull tab attaching device 25, a first brake device 31, a feed adjusting device 32,
The creaser 33 and the second brake device 34 are sequentially arranged along the conveying direction of the packaging material 11. Then, the packaging material 11 to which the inner seal and the pull tab are attached is conveyed to the creaser 33 via the first brake device 31 and the feed adjusting device 32. The feed adjusting device 32 is for adjusting the feed amount of the packaging material 11, and stops the packaging material 11 at a set position. In this case, the packaging container 2 on the packaging material 11
A mark (not shown) is printed at a set position for each length of the box, and the feed adjusting device 32 can recognize the position of the packaging material 11 by detecting the mark. . Therefore, when the creaser 33 is operated, the packaging material 11 stopped at the set position is fed by a distance corresponding to two boxes of the packaging container. At this time, a fold is formed corresponding to the punch hole. You. Then, the wrapped packaging material 11 is conveyed to a filling device (not shown) via the second brake device 34, is formed into a tube, and is filled with liquid food in the tube-shaped packaging material 11. It is intended to manufacture packaging containers. Next, the punch device 20 will be described.
In this case, only one of the pair of punching devices 20 will be described. FIG. 2 is a schematic diagram of a punch device according to an embodiment of the present invention, and FIG. 3 is a schematic diagram of a main part of a punch according to the embodiment of the present invention. FIG. 3A is a diagram illustrating the shape of a punch hole, and FIG. 3B is a diagram illustrating the tip of the punch. As shown in FIG. 2, in the portion where the punching device 20 is provided, the packaging material 11 is transported in a vertical arrow A direction. A punch 41 is provided on the back surface 11a of the packaging material 11, and a die 42 is provided on the front surface 11b so as to face the punch 41. A hole 42a corresponding to the punch 41 is formed in the die 42, and the packaging material 11 is advanced by advancing the punch 41 into the hole 42a.
And punch holes 43 can be formed. For this purpose, the punch 41 is fixed to one end of a lever 47 swingably supported by a fulcrum 46, and a cylinder 48 is provided at the other end of the lever 47. Therefore, when the rod 49 is moved in the direction of arrow B by operating the cylinder 48, the punch 4
1 can be moved in the direction of arrow C. In this case, since the packaging material 11 is transported in a vertical direction,
The packaging material 11 is punched from the lateral direction (right direction in the figure), and the punched pieces 44 of the packaging material 11 are extruded from the holes 42a. Therefore, removal of the punched pieces 44 becomes easy. Further, the packaging material 11 is moved from the back surface 11a side to the front surface 1a.
Since the blank is punched to the side 1b, all burrs generated by the punching protrude to the surface 11b side. Therefore, the inner seal (not shown) made of polyethylene is
When sticking to the inner seal 1a, the inner seal is not damaged by the burrs. As shown in FIG. 3, the punch 41 has a cross section corresponding to the shape of the punch hole 43, and a taper is formed on the end face of the tip from the peripheral portion to the central portion, and the concave portion 41a is formed by the taper. . Thus, the tip of the punch 41 and the packaging material 11
Since a line contact state is formed between them, the punching operation is facilitated. Further, since the taper is formed from the peripheral portion to the center portion, it is possible to prevent the packaging material 11 from being shifted left and right with respect to the transport direction at the time of punching. Next, the inner seal sticking device 22 (FIG. 1)
Will be described. In this case, only one of the pair of inner seal sticking devices 22 will be described. FIG. 4 is a schematic view of an inner seal sticking device in an embodiment of the present invention, FIG. 5 is a front view of a wind knife in the embodiment of the present invention,
FIG. 6 is a perspective view of the sealing plate according to the embodiment of the present invention, and FIG. 7 is a sectional view of a main part of the sealing plate according to the embodiment of the present invention. As shown in FIG. 4, the inner tape reel 2
The inner tape 24 fed out from 3 is sent out by a pair of sending rollers 51 and is conveyed to the cutter device 52. In this case, the delivery roller 51 is rotated by a stepping motor (not shown), and delivers the inner tape 24 by a set length. The cutter device 52 includes a wind knife 53 fixed to a packaging machine (not shown), and a knife 54 disposed so as to be relatively movable with respect to the wind knife 53.
Consists of Reference numeral 55 denotes a guide plate for supporting the inner tape 24 fed by the feed roller 51. As shown in FIG. 5, the wind knife 53 has a window 57 in which a mountain-shaped cut line 56 is formed at the upper end, and the inner tape 24 extends in a direction perpendicular to the conveying direction of the packaging material 11. And inserted into the window 57. When the knife 54 is raised, the inner tape 24 is cut into the inner seal 24a by the upper edge of the knife 54 and the cut line 56. As shown in FIG. 6, the knife 54 is fixed to a block-shaped sealing plate 60 via a heat insulating material 63. The sealing plate 60 is used for the packaging material 1.
Below 1, it is arranged movably in the direction of arrow D by a cylinder 61. A plate 66 is fixed to the top surface of the sealing plate 60, and the inner seal 24a cut by the cutter device 52 is placed on the plate 66. The surface of the plate 66 is processed with a fluororesin. Since the inner seal 24a is easily scattered by a slight wind or impact, as shown in FIG.
A vacuum hole 68 is opened in the top surface of the plate 66, and the vacuum hole 68 is connected to a vacuum source (not shown) via a line 69. Therefore, the inner seal 24a placed on the plate 66 is sucked and held by the plate 66 by the vacuum. The vacuum source is operated intermittently, and the inner seal 24a
The inner seal 24a is sucked only while is positioned on the plate 66. A rubber counter 70 is provided above the packaging material 11 so as to face the sealing plate 60. Therefore, by moving the sealing plate 60 upward with the inner seal 24a placed on the plate 66, the inner seal 24a can be pressed against the rubber counter 70 in accordance with the packaging material 11. A heater 71 is embedded in the sealing plate 60, and the sealing plate 60 is heated by the heater 71. Therefore, the inner seal 24a is attached to the back surface 11a of the packaging material 11 by the heat of the sealing plate 60,
The punch hole 43 is sealed by the inner seal 24a. In this case, since the surface of the plate 66 has been subjected to the fluororesin processing, the plate 66 has a high peeling property, and the inner seal 24a does not adhere to the plate 66. A temperature sensor 72 is attached to the sealing plate 60, and the temperature of the sealing plate 60 is detected by the temperature sensor 72. Then, a microprocessor (not shown) turns on and off the heater 71 corresponding to the detected temperature, and maintains the sealing plate 60 at a constant temperature. A material having a large heat capacity is used as the sealing plate 60, and the temperature does not change with the attachment of the inner seal 24a. Further, a material having a small heat capacity is used as the plate 66, so that the heat of the sealing plate 60 is quickly transmitted to the inner seal 24a and the packaging material 11. In place of the heater 71, another heat source or an ultrasonic sealing device (not shown) can be used. Next, the pull tab attaching device 25 (FIG. 1) will be described. In this case, only one of the pair of pull tab attaching devices 25 will be described. FIG. 8 is a cross-sectional view of the pull-tab attaching device according to the embodiment of the present invention, and FIG. 9 is a diagram showing the state of attaching the pull-tab in the embodiment of the present invention. The packaging material 11 having the inner seal 24a adhered to the back surface 11a by the inner seal attaching device 22 (FIG. 1) is conveyed to a pull tab attaching device 25. Then, the pull tab attaching device 25 moves the pull tab 27a to a position corresponding to the punched hole 43 on the surface 11b of the packaging material 11.
Is affixed. The pull tab 27a is formed by cutting the pull tab tape 27 to a set length. The pull tab 27a and the packaging material 11 are sandwiched and pressed by a pull tab seal heater 73 disposed above and a counter dolly 74 disposed below, and are heated by the pull tab seal heater 73. Therefore, the pull tab 2 is attached to the surface 11b of the packaging material 11.
7a is attached. Note that the pull tab 27a is
A vacuum hole 75 is opened in the lower surface of the pull-tab seal heater 73 so as not to move from a position corresponding to the punch hole 43 on the front surface 11b of the first surface 11b, and the vacuum hole 75 is connected to a vacuum source (not shown) via a line 76. I try to make it. Therefore, the pull tab 27a is sucked and held by the pull tab seal heater 73 by vacuum.
The vacuum source is operated intermittently and the pull tab 2
The pull tab 27a is sucked only while the nozzle 7a is located below the pull tab seal heater 73. An air chamber 77 connected to a pressure source (not shown) is formed in the counter dolly 74 at a position facing the inner seal 24a.
Cap air is blown out to increase the pressure in the air chamber 77 and press the inner seal 24a against the pull tab 27a. Therefore, the inner seal 24a and the pull tab 27a are sealed by the pressure of the cap air and the heat generated by the pull tab seal heater 73. Thus, the hatched portion in FIG. 9 is fused for sticking or sealing. In addition, 78 is an air gap formed between the inner seal 24a and the pull tab 27a, and 79 is a temporary fixing portion between the pull tab 27a and the packaging material 11. Next, the creaser 33 will be described. FIG.
FIG. 11 is a conceptual diagram of a creaser according to an embodiment of the present invention. FIG. 11 is a first process diagram of the creaser according to the embodiment of the present invention.
FIG. 1 is a second process diagram of the creaser in the embodiment of the present invention,
3 is a third process diagram of the creaser in the embodiment of the present invention, FIG. 14 is a fourth process diagram of the creaser in the embodiment of the present invention,
FIG. 15 is a fifth process diagram of the creaser in the embodiment of the present invention. As shown in FIG. 10, the inner seal 24a
The packaging material 11 (FIG. 8) and the pull tab 27a adhered thereto are transported in the direction of arrow E, and are transported to the creaser 33 via the first brake device 31 and the feed adjusting device 32. The feed adjusting device 32 is for adjusting the feed amount of the packaging material 11, and includes a flap 80 that is swingably disposed and a flap guide 81 that faces the flap 80 via the packaging material 11. The flap guide 81 has a concave surface 82 having a shape of a locus drawn by the tip of the flap 80 when the flap 80 is swung. The creaser 33 comprises a pair of crease rollers 83 and 84.
Reference numeral 4 denotes crease plates 85 and 86 having fan-shaped cross sections formed substantially over a semicircle, and crease plates 87 formed on the crease plate 85 to form folds on the packaging material 11.
However, a crease groove 88 is formed in the crease plate 86 so as to mesh with the crease protrusion 87. Therefore, the crease rollers 83, 8
When the crease rollers 83 and 84 are rotated at the set peripheral speeds in the directions of arrows F and G, respectively, while holding the packaging material 11 between
The crease of the pattern of the crease protrusion 87 and the crease groove 88 is formed on the packaging material 11. However, since the crease plates 85 and 86 are formed on the substantially semicircular portion of each of the crease rollers 83 and 84 and are not formed on the remaining portions, the crease plates 85 and 86 sandwich the packaging material 11. The packaging material 11 is transported during the interval, but in portions where the crease plates 85 and 86 are not formed, only the crease rollers 83 and 84 idle and the packaging material 11 is not transported. As described above, the creaser 33 is intermittently operated by repeatedly performing the crease forming mode for forming a fold on the packaging material 11 and the idling mode. Therefore, during the idling mode, a dating unit (not shown) prints a date on the packaging material 11, the punch device 20 (FIG. 2) forms a punch hole 43 in the packaging material 11, and the inner seal sticking device 22 ( 4) adheres the inner seal 24a to the punched hole 43, and the pull tab attaching device 25 (FIG. 8) attaches the pull tab 27a to the punched hole 43.
Is set to be attached. In this embodiment, the creaser 33 is provided in the pull tab attaching device 2 in the conveying direction of the packaging material 11.
5, but may be disposed upstream of the punching device 20. By the way, punch holes 43 are formed at predetermined positions on the packaging material 11 for the lengths of two packaging containers (not shown).
Is sealed by the inner seal 24a and the pull tab 27a. Therefore, it is necessary to form a fold in the packaging material 11 corresponding to printing on the packaging material 11. Therefore, a creaser 33 is arranged at a set position in order to make the print on the packaging material 11 correspond to the fold. However, even when the creaser 33 is disposed at the set position and the crease rollers 83 and 84 are rotated at the set peripheral speed, the packaging material 11 may expand and contract with a change in environment. Therefore, while the creaser 33 is repeatedly operated, the printing position and the fold position are shifted. Therefore, a mark sensor 91 composed of a photocoupler or the like is disposed between the feed adjusting device 32 and the creaser 33, and the mark sensor 91 is printed on the packaging material 11 at a set position corresponding to the length of two packaging containers. A not-shown mark is detected at a position closest to the creaser 33, and a stepping motor which is a drive source (not shown) of the flap 80 is controlled to stop the packaging material 11 at the set position. In this case, the brake device 31 is operated to fix the packaging material 11, and the flap 80 is rotated by a predetermined angle. Therefore, the packaging material 11 curves along the flap 80 by an amount corresponding to the angle at which the flap 80 rotates, and the packaging material 11 is retracted by that amount. When the flap 80 is stopped when the mark is detected by the mark sensor 91, the packaging material 11 can be stopped at the set position. Reference numeral 34 denotes a second brake device provided downstream of the creaser 33. In this manner, a fold can be formed corresponding to the punch hole 43, and the packaging material 11 having the fold formed is conveyed to a filling device (not shown) through the second brake device 34. The packaging container is manufactured by filling a liquid food into the tubular packaging material 11. Next, the operation of the creaser 33 will be described. As shown in FIG. 11, marks Mi (i = 1, 2,...) Are printed at set positions on the packaging material 11 for each length of two packaging containers. Then, the brake device 31 and the feed adjusting device 32 are in a non-operating state, the creaser 33 is in a state in which the crease forming mode has been completed, and a fold is formed between the marks M1 and M2 of the packaging material 11. The crease plates 85 and 86 have play portions 93 and 94 at the rear ends, respectively. The packing material 11 is held between the play portions 93 and 94, so that the packing material 11 is conveyed. However, since the crease protrusion 87 and the crease groove 88 are not formed, no fold is formed on the packaging material 11. Therefore, the packaging material 11 has the play portions 93 and 94 (for example, the length of one package container is 8 pieces).
In the case of a fold of 5 [mm], it is stopped at a position where it has been transported forward (to the right in the drawing) by 2 [mm]. Subsequently, as shown in FIG. 12, the brake device 31 is operated to pinch and stop the packaging material 11. Therefore, each mark Mi (i = 1, 2,...) Does not move. Next, as shown in FIG.
1 is a feed adjusting device 3 with the packaging material 11 stopped.
2 is operated, and the flap 80 is rotated in the direction of arrow H. Along with this, the flap guide 8 of the packaging material 11
The portion corresponding to 1 is curved along the concave surface 82, the portion downstream of the brake device 31 is moved in the direction of arrow I, and each mark Mi (i = 1, 2,...) Is also retracted. When the mark sensor 91 detects the mark M3, the rotation of the flap 80 is stopped, and at that time, the packaging material 11 is also stopped. Subsequently, as shown in FIG. 14, the brake device 31 is deactivated, and the packaging material 11 is released. At this time, due to the rebound of the curved portion of the packaging material 11 in the feed adjusting device 32, the packaging material 11
The brake device 34 can be operated so that does not move. Thus, the mark Mi (i = 1, 2, 2, 3)
..) Can be prevented from moving, and a fold can be formed from an appropriate position of the packaging material 11. Then, as shown in FIG. 15, when the crease rollers 83, 84 are rotated, the crease plates 85, 86
As a result, a fold is formed between the marks M2 and M3 of the packaging material 11. It should be noted that the present invention is not limited to the above-described embodiments, but can be variously modified based on the gist of the present invention, and they are not excluded from the scope of the present invention.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a schematic view of a spout forming apparatus of a packaging machine according to an embodiment of the present invention. FIG. 2 is a schematic view of a punch device according to an embodiment of the present invention. FIG. 3 is a schematic view of a main part of a punch according to an embodiment of the present invention. FIG. 4 is a schematic view of an inner seal sticking device according to an embodiment of the present invention. FIG. 5 is a front view of a wind knife according to the embodiment of the present invention. FIG. 6 is a perspective view of a sealing plate according to the embodiment of the present invention. FIG. 7 is a sectional view of a main part of the sealing plate in the embodiment of the present invention. FIG. 8 is a cross-sectional view of the pull tab attaching device according to the embodiment of the present invention. FIG. 9 is an attached state diagram of a pull tab in the embodiment of the present invention. FIG. 10 is a conceptual diagram of a creaser in the embodiment of the present invention. FIG. 11 is a first process diagram of the creaser in the embodiment of the present invention. FIG. 12 is a second process diagram of the creaser in the embodiment of the present invention. FIG. 13 is a third process diagram of the creaser in the embodiment of the present invention. FIG. 14 is a fourth process diagram of the creaser in the embodiment of the present invention. FIG. 15 is a fifth process diagram of the creaser in the embodiment of the present invention. [Description of Signs] 11 Packaging material 20 Punch device 22 Inner seal sticking device 24a Inner seal 25 Pull tab sticking device 27a Pull tab 33 Creaser 43 Punch hole

──────────────────────────────────────────────────続 き Continuation of the front page (72) Inventor Michio Suga 2-2-1-19 Akasaka, Minato-ku, Tokyo Inside Tetra Pak Co., Ltd. (72) Inventor Yoichi Okubo 2-2-119 Akasaka, Minato-ku, Tokyo Japan (56) References JP-A-2-152609 (JP, A) JP-A 63-49925 (JP, U) (58) Fields investigated (Int. Cl. ⁷ , DB name) B65B 9 / 00-9/24 B65B 61/18 B31B 1/90

Claims (1)

(57) [Claims 1] (a) A punch device for forming a punch hole for each length of one packaging container on a packaging material, and (b) a conveying direction of the packaging material (C) an inner seal sticking device that is provided downstream of the punch device and sticks an inner seal to the punch hole; and (c) is located downstream of the inner seal sticking device in the transport direction of the packaging material. A pull tab attaching device for attaching a pull tab to the punched hole, (d) a creaser for forming a fold in the packaging material , (e) a brake device for stopping the packaging material, and (f) the brake. With the packaging material stopped by the device
A spout forming apparatus for a packaging machine, comprising: a feed amount adjusting device for adjusting a feed amount of a packaging material .