JPS63104829A - Paper cylinder for paper can and manufacture and device thereof - Google Patents

Abstract

(57) [Abstract] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a paper can paper fi21M, and a method and apparatus for manufacturing the same.

[Prior art and its problems] Conventional paper can cylinders are constructed by winding a strip of paper in a spiral shape from one direction.

However, since paper strips generally have directional properties in terms of strength, the cylindrical structure spirally wound in one direction as described above has weak strength especially against twisting in a certain direction.
There were problems such as easy breakage.

[Objective of the Invention 1 The present invention has been made to solve the above-mentioned conventional problems.Objective 1. It is an object of the present invention to provide a filter paper can cylinder, which can withstand water sufficiently and can be used with sufficient security, especially as a container for drinking water, and a method and apparatus for manufacturing the same.

[Meaning of the Invention 1] The paper can cylinder of the present invention has a cylindrical body formed by spirally wrapping a band of paper in one direction, and on the outer circumferential surface of the cylinder, another band of paper is wrapped in a direction intersecting with the one direction. It is characterized by being spirally wound, laminated, and integrally joined to form a paper can cylinder.The manufacturing method for paper can cylinders is to spirally wrap paper strips around a mandrel from one direction. The cylinder is wound to form a continuous cylinder, the cylinder is cut to a desired length, and while the cut and separated cylinder is rotated in the opposite direction, another strip of paper is placed on the outer circumferential surface of the cylinder, crossing the above one direction. It is characterized in that it is spirally wound in the direction of the winding, laminated, joined integrally, and finally cut to the finished length, and the manufacturing equipment includes a mandrel whose proximal end is fixed, means for feeding a strip of paper onto the mandrel diagonally from behind; means for advancing the strip of paper spirally wound around the mandrel while rotating in one direction to form a cylinder; A cutting device that cuts the cut cylinder in the opposite direction, a means that supplies another strip of paper to the outer peripheral surface of the reversely rotated cylinder from diagonally backward, and a cutting device that cuts the cylinder in a spiral manner. It is characterized by comprising means for advancing the wrapped another strip of paper while rotating in the opposite direction to stack and join them together, and a finish cutting device for cutting the paper to a finished length. It is something.

[Embodiment 1] Hereinafter, an embodiment of the present invention will be described with reference to the drawings.

In FIG. 1 and FIG. 2, reference numeral 1 denotes a mandrel, the base end of which is fixed to a holding device 2. As shown in FIG. The mandrel 1 is formed into a hollow shape, and cold air is blown into the hollow interior to cool the mandrel 1. In addition, a large number of fine holes (not shown) are made in the mandrel 1 so as to pass through the inside and outside of the mandrel 1, and air forced into the mandrel 1 is blown out. It may be configured so that it can rotate and move forward smoothly.

A is t with plastic film a laminated on the inside.
This is aluminum foil for jSIIfj, and it is used after being rewound from a roll.

Reference numeral 3 denotes a folding device, which folds one side edge of the aluminum foil A.

4 is a heating device that heats one end side of the aluminum MA so that it can be bonded to the folded portion.

B and C are paper strips for the second and third layers, respectively. In this embodiment, waterproof kraft paper is used, and each paper is used after being rewound from a roll. The band-shaped paper may be paper made mainly of bamboo, high-quality paper, bleached kraft paper, unbleached kraft paper, or the like.

Reference numeral 5 denotes an adhesive tank in which heated and melted hot melt B is applied to the above-mentioned strip paper B by a so-called roll coating method or the like.
It is designed to be applied to the inner surface of C.

Reference numeral 6 denotes an id device for adjusting the feeding position of the above-mentioned necks B and C.

7 is a right winding device, which mainly consists of two winding belts 8.
, 9, and pulleys 10.11 and 12.13 around which these belts are wound.

As shown in FIG. 3, the winding belt 8 is stretched so as to sandwich the mandrel 1 from above and below, and rotates the paper strips B and C wound around the mandrel 1. , while advancing along the axis of the mandrel 1, a cylindrical body is formed. In this embodiment, the right-hand winding device 7 is composed of two winding belts 8 and 9, but it may be one belt.

Reference numeral 14 has left and right screw threads, and by turning a handle 15, the inclination angles of the winding belts 8 and 9 can be adjusted simultaneously, and the overspeed of the cylindrical body 11 can be adjusted.

Reference numeral 16 denotes a cutting-off device, which is connected to the right-handed winding device 7.
Cut the cylindrical body formed into a desired length. still,
Since the cylindrical body moves forward along the mandrel 1 during cutting, the cutter 16a also moves forward accordingly, as shown in FIG. 4, while cutting. Further, a groove 1a is carved in a portion of the mandrel 1 corresponding to the cutting movement point of the cutter 16a,
The cutting edge of the cutter 16a is prevented from interfering with the mandrel 1. In addition, the mandrel 1 on the downstream side of the groove 1a
diameter is somewhat smaller.

Reference numeral 17 is a reverse fast forwarding device, which is used to move the cut front body D
′ is rapidly reversely rotated (rotation direction opposite to the rotation direction by the right-hand winding device 7), and the cylinder D′ is rotated from the cutting front end face of the subsequent cylinder body rotated to the right by the right-hand winding device 7. I'm trying to separate them.

18 is the above-mentioned winding belt 8 yen? This braking device has the same structure as the above-mentioned brake device, and is designed to decelerate the cylinder D', which has been rapidly reversely rotated by the reverse fast forwarding device 17, to a constant speed. Furthermore, the above-mentioned brake device i? When 1B works, the above 3! ! The transmission device 17 is separated from the front body D', as shown in phantom in FIG.

E and F are paper strips made of waterproof kraft paper for 4-layer ftIJ and 5th NI, respectively, and are spirally wound around the outer peripheral surface of the cylindrical body D' from opposite directions.

19 is an adhesive tank, and 20 is an id device for adjusting the feeding position.

Reference numeral 21 denotes a left-hand winding device, which, like the right-hand winding device 7, mainly includes two winding bells) 22.23, and pulleys 24, 25 and V26.27 for winding these belts.
a strip of paper E, which is spirally wound around the outer peripheral surface of the cylindrical body D' from opposite directions and integrally laminated;
The cylindrical body D'' is formed by moving forward while rotating F. Furthermore, the inclination angle of the winding bell (22 and 23) is also adjustable.

G is a printed label, and a hot melt layer g is also formed on the back surface of the label.

28 is a mark detection device, 29 is a heating device, and 30 is a mandrel support device that supports the mandrel 1 by, for example, three rollers 30a, as shown in FIG.

Reference numeral 31 denotes a finishing cutting device, which includes a plurality of cutters 31a arranged at intervals corresponding to the finishing length of the can part.
cut at the same time. The cutters 31a also move in accordance with the advancement of the cylinder D'' during cutting, and grooves (not shown) are also carved in the portions of the mandrel 1 corresponding to the positions where these cutters 31a move.

Next, a method of manufacturing a paper cylinder using the apparatus of the above embodiment will be explained.

First, as shown in FIG. 7(A), one side edge of the aluminum foil A fed out from the roll is folded in so that the plastic film a is on the outside to form a folded part A'. The edge nA'' is heated by the heating device 4 and is wound around the mandrel 1 diagonally from the rear, as is clear from FIG.

At this time, as shown in FIG. 7(B), the heated rear edge A'' overlaps the folded part A' of the already wrapped cylindrical aluminum foil A, and is heated and melted. The plastic film afJe@wears.

Subsequently, two sheets of paper strips B and C are fed obliquely from the rear in a mutually overlapping state and wound around the outer surface of the first layer sieve made of aluminum MA. (See Figure 8) Note that the inner surfaces of these paper strips B and C are coated with hot melt.
b is coated and heated until it is wrapped or just before it is wrapped, and as shown in FIG. is joined to.

The cylindrical body formed by spiral winding as described above is driven forward (rightward in FIG. 1) while being rotationally driven by the winding belts 8 and 9 of the right winding device 7. It is understood that since the mandrel 1 is stationary, the winding action of the aluminum foil A and paper strips B and C is performed by the rotational forward movement of the front body by the winding belts 8 and 9. be done.

The cylindrical body formed by Ishinomaki Vc 7 is the mandrel 1
It is sent to the cutting g&r 1116 along the line, where it is cut into a predetermined length (in this example, the length approximately corresponds to 10 paper cans as the final product).

The cut and free cylindrical body D' is the reverse fast forwarding device W1.
17, it is rapidly rotated in the reverse rotation direction, and
The brake device 18 reduces the speed to near a constant speed (rotational speed due to the left winding device r!121).

As shown in FIG. 18, on the outer surface of the cylinder D' whose speed has been set to a constant speed by the brake device 18, the paper strips E and F as the fourth layer/fpJ5 layer are placed in the opposite direction to the paper strips B and C. The material is wound spirally from the base and joined together as shown in ttS1 (D).

As described above, the cylindrical body D'' is made up of the spirally wound strips wkB and C and the strips E and F that are spirally wound in the opposite direction. (included bell)
22 and 23, and then the printed label G is thermally bonded to the surface thereof. (See FIGS. 8 and 7(E)) The target D''' is finally cut into individual paper can cylinders by the finishing cutting device 31.

Incidentally, the cylindrical body D'' may be cut again at the portions cut by the major cutting device 16 before the final cutting is performed.In this case, the cylindrical body D'' that has been cut may be If the material is quickly fed into the finish cutting device 31 and cut, the finish cutting device 3
The first cutter 31a does not need to be moved laterally.

[Effects of the invention] (1) On the outer circumferential surface of the front body formed by spirally wrapping a paper strip in one direction, another paper strip is spirally wound in a direction intersecting the one direction and laminated. Since the paper cans are integrally joined together, it is possible to complement each other with the paper strips having directional properties in terms of strength, thereby constructing a durable paper can cylinder.

(2) Wrap a strip of paper spirally around a mandrel from one direction to form a continuous front body, cut the cylinder to a desired length, and rotate the cut and separated cylinders in the opposite direction. Another strip of paper is wound around the outer circumferential surface in a spiral pattern in a direction that intersects with the one direction mentioned above, and then it is joined together with M) Δ, and finally it is cut to a good finish, so a large number of sheets can be cut continuously and quickly. It is possible to efficiently manufacture a cylindrical body for a paper can.

(3) A mandrel whose proximal end side is fixed, a means for supplying a strip of paper to the mandrel from diagonally backward, and a tube that is rotated in one direction and moved forward while rotating the strip of paper spirally wound around the mandrel. a cutting device for cutting the sieve into a desired length; a means for rotating the cut cylinder in the opposite direction; and a cutting device for cutting the sieve into a desired length; a means for rotating the cut cylinder in the opposite direction; a means for supplying the another strip of paper spirally wound around the cylinder, a means for advancing the another strip of paper spirally wound around the cylinder in the opposite direction, stacking it and integrally joining it; Since it is composed of a finish cutting device for cutting, a simple and compact manufacturing device can be obtained.

[Brief explanation of the drawing]

Fig. 1 is a plan view showing one embodiment of the device of the present invention, Fig. 2 is a side view thereof, Fig. 3 is an explanatory view showing the action of the winding belt, and Fig. 4 is an explanation showing the action of the cutting device. Figure, 5th
Figure 16 is an explanatory diagram showing the action of the continuous reversing feeding device, Figure 16 is an explanatory diagram of the mandrel support device, Figures 7 (A) to (E) are explanatory diagrams showing the construction process of the paper cylinder in sequence, and Figure 8 is an explanatory diagram showing the process of forming the paper cylinder. The wrapping of paper etc. is an explanatory diagram showing the state. DESCRIPTION OF SYMBOLS 1... Mandrel, 1a... Groove, 2... Holding device, 3... Folding device, 4... Heating device, 5... Adhesive tank, 6... Guide device, 7...・Right winding device, 8, 9
...Retracting belt, 10.11,12,13...Pulley, 14...Left and right screw shaft, 15...Handle,
16... Large area cutting device, lea... Cutter, 17... Reverse fast forwarding device, 18... Brake device, 19... Adhesive tank, 20... Guide device, 21
... Left winding device, 22, 23... Winding belt, 2
4, 25.26.27... Pulley, 28... Mark detection device, 29... Heating device, 30... Mandrel support device, 30a... Roller, 31... Finish cutting device, 31a・・・Cutter, A...
・Aluminum foil, A'...folded part, A"...rear edge,
a... plastic film, B, C... strip paper,
b...hot melt, D, D', D'''...sieve body, E, F...band paper, G...printed label, g...
Hotmelt.

Claims (3)

[Claims] (1) On the outer circumferential surface of a cylinder formed by spirally wrapping a strip of paper in one direction, another strip of paper is wound spirally in a direction intersecting with the above one direction, layered, and integrally joined. A paper can paper cylinder characterized by being configured as follows. (2) Wrap a strip of paper spirally around a mandrel from one direction to form a continuous cylinder, cut the cylinder into a desired length, and rotate the cut and separated cylinders in the opposite direction. Manufacture of a paper tube for a paper can, characterized in that another strip of paper is wound spirally around the outer circumferential surface in a direction intersecting the above-mentioned one direction, laminated and bonded together, and finally cut to a finished length. Method. (3) A mandrel whose proximal end side is fixed, a means for supplying a strip of paper to the mandrel from diagonally backward, and a tube that is rotated in one direction and moved forward while rotating the strip of paper spirally wound around the mandrel. a cutting device for cutting the cylinder into a desired length; a means for rotating the cut cylinder in the opposite direction; and a cutting device for cutting the cylinder into a desired length; a means for rotating the cut cylinder in the opposite direction; means for supplying the paper, and means for stacking and integrally joining the another paper strip wound spirally around the cylinder by advancing it while rotating in the opposite direction;
An apparatus for manufacturing a paper can cylinder, characterized by comprising a finish cutting device for cutting the paper can to a finished length.