JP3037494B2 - Cutter mounting device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION This invention is, cut to wrap carton
It relates cutter attachment joining apparatus for attaching a coater.

[0002]

2. Description of the Related Art Generally, a packaging sheet such as a plastic film or aluminum foil for wrapping food or the like is housed in a paperboard wrap carton in a state of being rolled around a paper cylinder. In such a wrap carton, a metal cutter is attached at a sheet cutting position in order to cut a packaging sheet drawn to a desired length. From the viewpoint of problems, etc.
Cutters formed by punching a plastic sheet or a paper-like material impregnated with a resin have been used (for example, see Japanese Utility Model Laid-Open No. 59-193128 and Japanese Utility Model Laid-Open No. 2-83229). The attachment of the non-metallic cutter is conventionally performed manually using an adhesive.

[0003]

As described above, since the installation of a nonmetallic cutter is performed manually, the labor and other costs are increased, and the production is not very efficient. There was a point.

[0004] The present invention has been made in view of the above problems, and an object is that the attachment of the cutter to provide a cutter mounting rack arrangement that allows efficient.

[0005]

In order to achieve the above object, a cutter mounting apparatus according to the present invention intermittently feeds a raw sheet of a cutter to an individual saw blade-like cutter between an upper die and a lower die. Pressing the cutter through the adhesive surface to the predetermined position of the carton blank, which is set one by one, while holding the punched and punched cutter by suction on one of the upper mold and the lower mold that moves up and down It is actuated to attach the cutter to the carton blank by
Ru is configured so that.

There are two types of cutter mounting devices of the present invention. One is an upper die that moves up and down with a saw blade upper blade and suction means for holding the cut cutter. A fixed lower mold having a saw-shaped lower blade that meshes with the saw-shaped upper blade of the mold, a feeding unit that intermittently feeds the raw cutter sheet onto the lower mold, and a lower-dead-center position of the upper mold. Transport means for sequentially setting the carton blanks one by one.

The other is a lower die that moves up and down having a saw blade lower blade and suction means for holding the cut cutter, and a saw blade upper meshing with the lower blade saw blade lower blade. A fixed upper mold having a blade, a feeding means for intermittently feeding the raw cutter sheet onto the lower mold, and a transport means for sequentially setting one carton blank at a time at the upper dead center position of the lower mold. It is characterized by having.

In each of the above-mentioned cutter mounting apparatuses, when using a cutter raw sheet subjected to adhesive processing, the cutter mounting apparatus may be provided with a release means for releasing the release paper stuck to the cutter raw sheet.

[0009] When a raw cutter sheet not subjected to adhesive processing is used, it is preferable to provide a gluing unit for applying an adhesive at a predetermined position of the carton blank.

[0010]

According to the cutter mounting apparatus of the present invention, the raw cutter sheet is sequentially fed out between the upper die and the lower die to form a saw blade-shaped cutter. It is pressed against a predetermined position of the carton blank while being sucked and held by the lower mold, and attached to the carton blank with an adhesive surface. In this case, the bonding surface is provided in advance on the cutter side or the carton blank side.

In one embodiment of the present invention, when the upper mold is near the top dead center, the original cutter sheet is placed between the upper saw blade and the lower saw blade. Is sent out by a predetermined dimension, and then the upper die is lowered to cut and form the cutter with the upper blade and the lower blade. Thereafter, the formed band-shaped cutter descends while being held by the suction means of the upper mold, is pressed to a predetermined position on the upper surface of the carton blank set at the bottom dead center position of the upper mold, and is attached with an adhesive surface. . This series of operations is performed continuously.

In another aspect of the present invention, when the lower die is near the bottom dead center, the original cutter is located between the upper saw blade and the lower saw blade. The sheet is fed out by a predetermined size, and then the lower die is raised, so that the cutter is cut and formed by the upper blade and the lower blade. Thereafter, the formed band-shaped cutter is lifted while being held by the suction means of the lower die, pressed against a predetermined position on the lower surface of the carton blank set at the upper dead center position of the lower die, and attached by an adhesive surface. . This series of operations is performed continuously.

[0013]

Embodiments of the present invention will be described below with reference to the drawings.

FIGS. 1 and 2 are side views showing an embodiment of a cutter mounting device according to one embodiment of the present invention.
2 shows a state where the upper die is located at the top dead center, and FIG. 2 shows a state where the upper die is located at the bottom dead center.

In the drawing, reference symbol S denotes an original sheet of plastic or paperboard cutter, and in the present embodiment, a sheet to which a pressure-sensitive adhesive is applied on the back surface and a release paper S1 is adhered. The cutter mounting device 10 includes an upper die 2 that moves up and down.
0 and a lower die 30 fixed thereto. An upper blade 21 having a saw blade-shaped cutting portion 21a is attached to the lower end of the upper die 20 at the right end, and a saw blade is formed at the upper end of the lower die 30 to the left end. The lower blade 31 having the cut portion 31a is attached. The cut portions 21a and 31a mesh with each other to cut the object into a saw blade shape. In addition, the upper mold 20
Suction means 2 comprising a plurality of vacuum holes
2 are provided.

As shown in FIG. 1, when the upper die 20 is near the top dead center, the raw cutter sheet S protrudes from the lower blade 31 by a predetermined size, and is intermittently driven by a feeding means (not shown). Will be sent to In this case, in this embodiment, the release paper S1 is peeled off through the peeling means 40. When the upper die 20 descends, the leading end portion of the fed cutter raw sheet S is moved to the upper blade 21 and the lower blade 31.
And a band-shaped cutter is formed. The formed cutter is removed by the suction means 22 in the upper blade 21.
As shown in FIG. 2, the upper blade 21 is pressed against a predetermined position on the upper surface of the carton blank B sent below the lower dead center position of the upper blade 21 by a conveying means described later. It is attached with its adhesive surface. Thereafter, the suction means 22 is released, the upper die 20 is raised, and the carton blank B with the cutter is sent out by the conveyance means, and the next carton blank B is conveyed to the same position. Then, when the upper die 20 rises to the vicinity of the top dead center, the raw cutter sheet S is fed by a predetermined size, and thereafter, the cutter is continuously attached to the carton blank B in the same manner. The area 33 on the upper surface of the lower blade 31 is subjected to release processing such as Teflon processing so that the adhesive does not stick.

FIG. 3 shows an example of the conveying means of the carton blank B. The conveying means 50 includes a feeder 51, a feed conveyor 52, a discharge conveyor 53, and a nip roller portion 54 whose perspective view is shown in FIG. It has. The nip roller portion 54 is composed of four rows of upper nip rollers 55a to 55 having a structure of coaxially reversing.
d and lower nip rollers 56a to 56d. In this embodiment, two outer rows are used for feeding and two inner rows are used for feeding. The nip timing is determined by the nip time of a certain portion of the rubber 57a to 57d in the drawing.

First, the carton blanks B set in the feeder 51 of the transport means 50 are fed one by one by the delivery conveyor 52 to the upper nip rollers 55a to 55d.
And between the lower nip rollers 56a to 56d, and is set at a predetermined position of the lower mold 30 while one end thereof is held by the nip roller portion 54 by the counterclockwise rotation of the upper nip rollers 55a and 55d. When the cutter is attached at this position, the upper nip rollers 55b and 55c are sent out onto the discharge conveyor 53 via the receiving table 58 by clockwise rotation.

FIGS. 5 and 6 are side views showing another embodiment of the cutter mounting apparatus according to the present invention.
FIG. 5 shows a state where the lower mold is located at the bottom dead center, and FIG. 6 shows a state where the lower mold is located at the top dead center.

The present embodiment is also directed to the original cutter sheet S having an adhesive applied to the back surface and a release paper S1 adhered thereto. The cutter mounting device 60 is composed of a fixed upper die 70 and a lower die 80 that moves up and down. An upper blade 71 having a saw blade-shaped cutting portion 71a at the left end is attached to the lower part of the upper die 70. A lower blade 81 having a saw blade-shaped cutting portion 81a at the right end is attached to the upper part of the mold 80. The cut portions 71a and 81a mesh with each other to cut the object into a saw blade shape. Further, the lower blade 81 of the lower die 80 is provided with suction means 82 including a plurality of vacuum holes. Further, the upper die 70 is provided with a gap for the carton blank B to pass therethrough, and is provided with a vertically movable stopper 72 for positioning the carton blank B.

As shown in FIG. 5, when the lower die 80 is near the bottom dead center, the raw cutter sheet S is projected above the lower blade 81 by a predetermined size, and is fed by a feeding means (not shown). Sent intermittently. In this case, also in this embodiment, the release paper S1 is peeled off through the peeling means 90. The leading end portion of the fed cutter raw sheet S is
When the lower die 80 rises, it is cut by the upper blade 71 and the lower blade 81 to form a band-shaped cutter. The formed cutter rises while being held above the lower blade 81 by the suction means 82 in the lower blade 81, and as shown in FIG.
It is pressed by a conveying means (not shown) to a predetermined position on the lower surface of the carton blank B sent above the upper dead center position of the lower blade 81 from the left side of the figure, and is attached with an adhesive. Next, the suction means 82 is released, the lower die 80 is lowered, and the stopper 72 is raised. Then, the carton blank B with the integrated cutter is sent out to the right in the drawing through the gap, and the next carton blank B Is transported to the same position. Then, when the lower die 80 is lowered to the bottom dead center, the original cutter sheet S is fed by a predetermined size, and thereafter, the cutter is continuously attached to the carton blank B in the same manner. The area 73 on the lower surface of the upper blade 71 is subjected to release processing such as Teflon processing so that the adhesive does not stick.

In each of the above embodiments, the lower blade 31
Release processing is performed on the upper surface area 33 or the lower area 71 on the lower surface of the upper blade 71 so that the adhesive raw sheet S can be smoothly fed out. Instead of performing the mold processing, as shown in FIGS. 7 and 8, the cutter original sheet S is formed by inclining from the cutting portion 31 a of the lower blade 31 or the cutting portion 71 a of the upper blade 71 to have a tapered shape. Adhesive surface of lower blade 31
You may make it not contact the upper surface or the lower surface of the upper blade 71.

In each of the above embodiments, the case where the cutter raw material S having been subjected to the adhesive processing is used has been described. A method of applying an adhesive to the carton blank can also be adopted. The cutter mounting device 60 of the type in which the lower die moves up and down according to FIG.
An embodiment of this method will be described.

As shown in FIG. 9, in this embodiment, a gluing unit 100 is provided before the carton blank enters the cutter mounting device 60. The gluing unit 100 is of a gravure coater type and has a plate cylinder 10
1, an impression cylinder 102, a doctor 103, and an ink pan 104 for containing an adhesive. A claw feed chain 110 for feeding the carton blanks one by one is provided in front of the gluing unit 100, and a nip roller 120 for holding and taking out the carton blanks is provided after the cutter mounting device 60. Have been. Plate cylinder 101 and impression cylinder 1 in gluing unit 100
Reference numeral 02 also functions as a roller for feeding a carton blank to the cutter mounting device 60. Therefore, when the carton blank comes into contact with the stopper 72, the impression cylinder 10
2 is released and the cutter is attached.
When it rises, it returns to the original position, so that the carton blank is sent to the nip roller 120. The circumferential length of the plate cylinder 101 is set to be equal to the pitch of the feed pawls in order to make the peripheral speed of the plate feed chain 110 constant.

In the above-mentioned apparatus, the carton blanks are glued one by one by the feed claw chain 110.
The adhesive is applied to a predetermined position of the carton blank in the gluing unit 100, and the carton blank is sent as it is into the cutter mounting device 60 until it hits the gap of the upper die 70 against the stopper 72. And
In the cutter mounting device 60, the raw cutter S 'intermittently fed by the feeding means (not shown) is connected to the lower die 8.
0 is cut by the upper blade 71 and the lower blade 81 into a band-shaped cutter, and this cutter is raised while being held above the lower blade 81 by the suction means 82 in the lower blade 81, and the carton blank is raised. At a predetermined position. The carton blank to which the cutter is attached in this manner is raised by the stopper 72, is sandwiched between the plate cylinder 101 and the impression cylinder 102, is conveyed to the nip roller 120, and is discharged by the nip roller 120.

As the adhesive, an emulsion type (acrylic, vinyl acetate, ethylene vinyl acetate or a copolymer thereof) is preferable, but a hot melt type can also be used by using the plate cylinder 101 as a hot roll. is there. Further, the plate depth of the plate cylinder 101 is determined by the required adhesive force, but generally, the deeper (100 μm or more) is better.

By using the gluing unit 100 as described above, it is not necessary to use the cutter raw material S that has been subjected to adhesive processing. Therefore, it is not necessary to provide the peeling means 40 and 90 as used in the above embodiments. As compared with the case of bonding with an adhesive, a sufficient adhesive force can be obtained even at a low temperature or a high temperature.
It is needless to say that this bonding method in which an adhesive is applied to the carton blank and the cutter is mounted is applicable to a cutter mounting device in which the upper die moves up and down.

In the present invention, various methods can be adopted in addition to the above-described bonding method. For example, a heat-sensitive bonding method may be used. In this case, a heat-sensitive adhesive coated in advance on the entire surface of the raw cutter sheet or on a predetermined position of the carton blank is used, and the upper blade 21 or the lower blade 81 which moves up and down is provided with suction means 22, 82.
At the same time, a heating means is provided. In this case, also in this method, the peeling means 40,
It is not necessary to arrange 90.

Further, a glue spraying mechanism is appropriately disposed, and an adhesive is sprayed to a predetermined position of the original sheet of the cutter in the middle of feeding or the carton blank before the cutter is attached, thereby bonding the carton blank and the cutter. It is also possible to take.

Although the present invention has been described above, it goes without saying that the saw blade shape of the cutter can be any shape depending on the shape of the cutting portion of the upper blade and the lower blade, and it is made of plastic or paperboard. An appropriate shape can be set according to the material of the raw sheet and the type of the packaging sheet to be cut.

[0031]

As described above, according to the present invention,
The raw sheet of the cutter is sequentially sent out between the upper mold and the lower mold to form a saw blade-shaped cutter, and the formed cutter is sucked and held by the upper mold or the lower mold that moves up and down. Since the blank is attached to the predetermined position by pressing the adhesive surface, the cutter can be automatically attached without manual operation. Therefore, the efficiency of the wrap carton manufacturing process can be increased.

[Brief description of the drawings]

FIG. 1 is a side view showing an embodiment of a cutter mounting device according to one embodiment of the present invention at an upper dead center position of an upper die thereof.

FIG. 2 is a side view showing the upper mold at a bottom dead center position.

FIG. 3 is a side view illustrating an example of a conveying unit.

FIG. 4 is a perspective view of a nip roller unit in the transport unit of FIG.

FIG. 5 is a side view showing another embodiment of the cutter mounting device according to the present invention at a bottom dead center position of the lower die.

FIG. 6 is a side view showing the lower die at the top dead center position.

FIG. 7 is a side view of a main part showing a modification of the lower die in the cutter mounting device of FIG. 1;

FIG. 8 is a side view of a main part showing a modification of the upper die in the cutter mounting device of FIG. 5;

FIG. 9 is a side view showing an example of a cutter mounting device provided with a gluing unit.

[Description of Signs] S, S 'Cutter raw sheet B Carton blank 10 Cutter mounting device 20 Upper die 22 Suction means 30 Lower die 40 Peeling means 60 Cutter mounting device 70 Upper die 80 Lower die 82 Suction means 90 Peeling means 100 Gluing unit

──────────────────────────────────────────────────続 き Continuation of the front page (72) Inventor Mineo Mukai 1-1-1, Ichigaya-Kagacho, Shinjuku-ku, Tokyo Dai Nippon Printing Co., Ltd. (56) References JP-A-2-172721 (JP, A) Kaihei 2-172722 (JP, A) (58) Field surveyed (Int. Cl. ⁷ , DB name) B65D 5/72 B65D 25/52

Claims (4)

(57) [Claims] 1. A fixed device comprising an upper die that moves up and down having a saw blade upper blade and suction means for holding a cut cutter, and a saw blade lower blade that meshes with the upper blade saw blade. The lower mold of the state,
A cutter mounting device, comprising: a feeding means for intermittently feeding a raw cutter sheet onto a lower mold; and a conveying means for sequentially setting one carton blank at a bottom dead center position of the upper mold. 2. A fixed device comprising a lower die which moves up and down having a saw blade lower blade and suction means for holding a cut cutter, and a saw blade upper blade engaged with the lower blade saw blade. The state's upper mold,
A cutter mounting device comprising: a feeding means for intermittently feeding a raw cutter sheet onto a lower mold; and a conveying means for sequentially setting carton blanks one by one at a top dead center position of the lower mold. 3. A cutter attachment apparatus of claim 1, wherein further comprising a peeling means affixed to the release paper to the cutter original sheet. 4. A cutter attachment apparatus of claim 1, wherein further comprising a gluing unit for applying adhesive to a predetermined position of the carton blank.