JP3593306B2 - Paper container manufacturing equipment - Google Patents

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a method for manufacturing a paper container used as, for example, a food container or a small container, and an improvement of the device.
[0002]
[Prior art]
Conventionally, as a method for manufacturing this type of paper container, for example, a method described in JP-A-6-122439 and a method described in JP-A-8-281841 are known.
In the former method, one end of the tubular body is curled inward to form a curled portion, and a face is inserted into the inside from the other end of the tubular body and this is brought into contact with the curled portion. .
In the latter method, a face is inserted from one end of the tubular body to an internal bonding portion, glued between the tubular body and the face and bonded, and one end of the tubular body is curled inward. In this case, a curled portion is formed to abut against the face.
[0003]
[Problems to be solved by the invention]
However, in the former method, the curl portion is formed first at one end of the cylindrical body, so that the curl portion can be easily formed and beautifully formed, but after the curl portion is formed, the face is formed into a cylindrical shape. It was difficult to insert a face because it was inserted from the other end of the body.
On the other hand, in the latter method, since the face piece is inserted first from one end of the tubular body and bonded, the insertion of the face piece is easy, but the curled portion is attached to one end of the tubular body after the face piece is bonded. Since it was formed, the face was in the way and it was difficult to form the curled portion, and it was not possible to form beautifully.
SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned problems, and has been made in order to solve the problems. It is an object of the present invention to easily insert a face and to easily form a curled portion and to form a beautifully. An object of the present invention is to provide an apparatus for manufacturing a paper container.
Another object of the present invention is to provide an apparatus for manufacturing a paper container which can be easily manufactured even if the diameter and the shape of the paper container are different.
[0004]
[Means for Solving the Problems]
An apparatus for manufacturing a paper container according to the present invention includes a revolving disk that rotates while stopping at a supply position, a positioning position, a gluing position, a molding position, a bonding position, and a discharging position; A mandrel in which the face is inserted and the face is inserted from the upper end of the tubular body into the inside, and a face provided at the positioning position of the swivel and the face to the tubular body is retracted beyond the gluing point. Positioning means for positioning, gluing means provided at the gluing position of the swivel board and applying glue to the gluing location of the cylindrical body, and upper end of the tubular body provided at the molding position of the swivel board inward Forming means for curling to form a curled portion, and a face provided at a laminating position of a revolving lathe to move a face to a gluing position and adhere to a peripheral wall of a cylindrical body and abut the curled portion to form a paper container And a paper container provided at the discharge position of the swivel And a discharge means for discharging from the mandrel, wherein the mandrel is detachably attached to the upper part of the support shaft and smaller than the inner diameter of the cylindrical body, and is fitted inside the upper part of the cylindrical body. In addition to the inner mold, the molding means is characterized in that it has a half-split outer mold that can clamp the upper part of the cylindrical body with the inner mold of the mandrel.
[0005]
The turning table is turned while stopping at the supply position, the positioning position, the gluing position, the forming position, the bonding position, and the discharging position. When the turning table is turned to the supply position, the tubular body is extrapolated to the outside of the mandrel, and the face is inserted from the upper end of the tubular body to the inside. When the swivel is turned to the positioning position, the positioning means positions the face piece with respect to the tubular body at the retreat location beyond the gluing location. When the revolving wheel is turned to the gluing position, the gluing means applies glue to the gluing location of the tubular body. When the turning machine is turned to the forming position, the upper end of the tubular body is curled inward by the forming means to form a curled portion, and the curled portion is adjacent to the glued portion. When the turntable is turned to the laminating position, the face is moved to the gluing position by the laminating means and adheres to the peripheral wall of the cylindrical body, and at the same time, is brought into contact with the curl portion to form a paper container. When the turntable is turned to the discharge position, the paper container is discharged from the turntable and the mandrel by the discharge means.
[0006]
After the face is inserted into the evacuation point beyond the gluing point from one end into the inside of the cylindrical body, it is glued to the gluing point of the cylindrical body, so that the face is easily inserted and the gluing is performed. Is easier to do. When the face is in the retracted position, one end of the tubular body is curled to form a curled portion, so that the face can be formed without hindrance and beautifully formed. After the curl portion is formed, the face piece is moved to the glued portion, so that the face piece is adhered to the peripheral wall of the tubular body and the face piece is securely brought into contact with the curled portion of the tubular body. At this time, if extra glue is applied and placed, the face and the curl portion can be adhered by the excess glue.
At each stop position of the turntable that rotates while stopping, means for controlling each process are arranged to manufacture paper containers sequentially from the cylindrical body and face, so that paper containers can be manufactured efficiently in a small space. You can do it.
[0007]
The mandrel has a spindle smaller in diameter than the inner diameter of the cylindrical body, and an inner mold detachably mounted on the upper part of the spindle and fitted inside the upper part of the cylindrical body. Even if the shape is different, it can be dealt with simply by replacing the inner mold without replacing the entire mandrel, so that the mold cost can be reduced and the paper container can be easily manufactured. Further, when the cylindrical body is extrapolated to the mandrel, the cylindrical body comes into contact with only the inner mold, so that the supply of the cylindrical body can be easily performed.
Since the forming means includes a half-shaped outer die capable of holding the upper part of the cylindrical body with the inner die of the mandrel, the cylindrical body is appropriately held at the time of molding, and the molding is performed with high accuracy. .
[0008]
The supply position preferably includes a tubular body supply position and a face supply position. With this configuration, the cylindrical body and the face piece can be supplied with a sufficient time.
[0009]
A gluing means is provided so as to be able to move up and down and swivel and radiates the glue around by a centrifugal force, and a gluing gun that can go up and down in synchronization with the swivel disk and sprays glue at the center thereof, Preferably. In this case, the structure is simple, and the glue can be evenly applied to the glued portion on the inner periphery of the cylindrical body.
[0010]
Preferably, the discharge means includes a vacuum suction device for suctioning a face of the paper container. In this case, the paper can be discharged properly using the face of the paper container.
[0011]
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, embodiments of the present invention will be described with reference to the drawings.
FIG. 1 is a plan view showing an outline of a paper container manufacturing apparatus of the present invention. FIG. 2 is a vertical sectional side view of a cylindrical body supply position in FIG. 1. FIG. 3 is a vertical side view of a face supply position in FIG. 1. FIG. 4 is a vertical sectional side view of a positioning position in FIG. 1. FIG. 5 is a vertical side view of the gluing position in FIG. 1. FIG. 6 is a vertical side view of a molding position in FIG. 1. FIG. 7 is a vertical side view of the bonding position in FIG. 1. FIG. 8 is a vertical sectional side view of the discharge position in FIG.
[0012]
The main part of the paper container manufacturing apparatus 1 includes a revolving disk 2, a mandrel 3, a positioning means 4, a gluing means 5, a forming means 6, a bonding means 7, and a discharging means 8.
[0013]
The turning table 2 turns while stopping at a supply position A, a positioning position B, a gluing position C, a molding position D, a bonding position E, and a discharge position F. In this example, the cylindrical body supply position A1, It turns while stopping at the face supply position A2, the preliminary (play) position A3, the positioning position B, the gluing position C, the forming position D, the bonding position E, and the discharging position F. It is provided so as to be rotatable around the axis, and is turned while stopping at every eight equally-spaced points (45 degrees) on the circumference by an intermittent drive machine (not shown) provided on the body 9. , So-called intermittent turning.
[0014]
The mandrel 3 is provided on the swivel 2 and has a tubular body G extrapolated at a supply position A and a face H inserted from the upper end of the tubular body G into the inside. The cylindrical body G is provided at each of the eight equally-divided portions of the circumference of the cylinder 2, and at the cylindrical body supply position A1, the cylindrical body G is extrapolated by human power, and at the face supply position A2, the cylindrical body G is humanly powered. The face H is inserted into the inside from the upper end.
Thus, the mandrel 3 is mounted on the swivel 2 by bolts, and is removably mounted on a cylindrical support shaft 10 having a diameter smaller than the inner diameter of the cylindrical body G by an embedded bolt. A disk-shaped inner die 11 which is positioned inside the upper part of the cylindrical body G, an annular elevating plate 12 which is penetrated up and down by the support shaft 10 to receive the cylindrical body G, and A pair of left and right guide rods 13 which are provided so as to be able to move up and down and support the elevator plate 12 so as to be able to move up and down and stop, and are provided at the support shaft 10 so as to be able to move up and down and are fixed to arbitrary positions by bolts and And an annular stopper 14 for regulating the lowering of the stopper 12.
Although not shown, the guide rod 13 is raised and lowered by a fluid pressure cylinder, a cam mechanism, and the like.
[0015]
The positioning means 4 is provided at the positioning position B of the swivel 2 and positions the face H at the retreat location beyond the gluing location with respect to the cylindrical body G. In this example, the positioning position of the swivel 2 is B, the lower end thereof is brought into contact with the elevating plate 12 while the cylindrical body G is fitted on the inner mold 11 of the mandrel 3 by the descent, and the face H is inserted into the mandrel 3. A stepped pressing die 15 is provided which positions the face H at a retreat location beyond the gluing location by slightly lowering them while being held between the mold 11. Although not shown, the stepped pressing die 15 is configured to be moved up and down by a fluid pressure cylinder, a cam mechanism, or the like.
[0016]
The gluing means 5 is provided at the gluing position C of the swivel 2 and applies glue I to the gluing location of the cylindrical body G. In this example, the glue is provided above the gluing position C of the swivel 2. A swivel disk 16 is provided so as to be able to move up and down and swivel, and radiates the glue I around by a centrifugal force. It is configured. Although not shown, the revolving disk 16 is raised and lowered by a fluid pressure cylinder, a cam mechanism, and the like, and is rotated by a motor and the like. Although not shown, the gluing gun 17 is connected to a glue supply source so that the glue I is ejected at a predetermined timing.
[0017]
The shaping means 6 is provided at the shaping position D of the swivel 2 and curls the upper end of the cylindrical body G inward to form a curled portion J. In this example, the mandrel at the shaping position D of the swivel 2 is formed. A half-shaped outer die 18 which is provided so as to be able to move (open and close) in the horizontal direction with respect to the inner die 3 and which can clamp the upper part of the cylindrical body G with the inner die 11 of the mandrel 3; A molding concave mold 19 is provided above the molding position D so as to be able to ascend and descend and curls the upper end of the cylindrical body G inward by the descending to form a curled portion J. Although not shown, the outer dies 18 are opened and closed by a fluid cylinder or the like. Although not shown, the molded concave mold 19 is raised and lowered by a fluid pressure cylinder, a cam mechanism, and the like, and is provided with a heater for curling while heating the upper end of the cylindrical body G.
[0018]
The laminating means 7 is provided at the laminating position E of the turning table 2 and moves the face H to the gluing position to adhere to the peripheral wall K of the cylindrical body G and to abut on the curl portion J, thereby making the paper container L In this example, the push plate 20 is provided above the laminating position E of the revolving disk 2 so as to be able to move up and down and presses the curled portion J of the tubular body G by descending. And a mandrel 3 for raising the face H. Although not shown, the push plate 20 is configured to be moved up and down by a fluid pressure cylinder, a cam mechanism, or the like.
[0019]
The discharge means 8 is provided at the discharge position F of the revolving disk 2 and discharges the paper container L from the revolving disk 2 and the mandrel 3. In this example, the paper container L is moved upward by the inner mold 11 of the mandrel 3 only. , A vacuum suction device 21 for sucking the face H of the paper container L, a lifting cylinder 22 for raising and lowering the same, an arm 23 for horizontally rotating the same, and a discharge position. A chute 24 is provided.
Although not shown, the vacuum adsorber 21 is connected to a vacuum pump so as to be evacuated at a predetermined timing.
[0020]
In this example, the cylindrical body G has a cylindrical shape, and is a so-called one-round wound cylinder in which a rectangular blank made of cardboard or the like is wound in a cylindrical shape, and both ends are overlapped and glued.
In this example, the face piece H has a disk shape and has a size corresponding to the inner diameter of the cylindrical body G.
[0021]
Next, the operation will be described based on such a configuration.
As shown by the arrow in FIG. 1, the revolving lathe 2 is driven by an intermittent drive to supply a cylindrical body supply position A1, a face supply position A2, a preliminary position A3, a positioning position B, a gluing position C, a forming position D, and a bonding position. E, turning while stopping at the discharge position F.
[0022]
When the turning table 2 is turned to the cylindrical body supply position A1, as shown in FIG. 2, the mandrel 3 is pushed upward from the lifting plate 12 by being lowered until the lifting plate 12 comes into contact with the stopper 14. . Then, the cylindrical body G is supplied by human power, and the cylindrical body G is extrapolated to the inner mold 11 of the mandrel 3.
[0023]
When the turntable 2 is turned to the face supply position A2, as shown in FIG. 3, the face H is supplied by human power, and the face H is inserted into the cylindrical body G of the mandrel 3 which is inserted outside the inner die 11. It is.
[0024]
When the turning table 2 is turned to the preliminary position A3, if the cylindrical body G and the face H have not been supplied, they are supplied.
[0025]
When the turning table 2 is turned to the positioning position B, as shown in FIG. 4, the stepping die 15 of the positioning means 4 is lowered and the lifting plate 12 is raised slightly. Then, the lower end of the tubular body G is fitted to the elevating plate 12 while being fitted to the mandrel 3, and the face H is held between the stepping die 15 and the inner mold 11 of the mandrel 3. These are slightly raised, and the face H is positioned at the retreat location beyond the glued location with respect to the cylindrical body G. After positioning, the stepping die 15 of the positioning means 4 is raised and returned to the original position while the mandrel 3 and the elevating plate 12 remain as they are.
[0026]
When the revolving disk 2 is rotated to the gluing position C, the revolving disk 16 of the gluing means 5 is rotated and lowered to the gluing point of the cylindrical body G as shown in FIG. Is lowered in synchronism with the turning disk 16 and a predetermined amount of glue I is jetted to the center thereof. Then, the glue I is evenly radiated to the surroundings by the centrifugal force of the rotating disk 16 and is uniformly applied to the glued portion of the cylindrical body G. After gluing, the rotating disk 16 of the gluing means 5 and the gluing gun 17 are raised and returned to their original positions.
[0027]
When the turning table 2 is turned to the forming position D, as shown in FIG. 6, the half-shaped outer die 18 of the forming means 6 is closed and the upper part of the cylindrical body G is interposed with the inner die 11 of the mandrel 3. Is held, and the molding concave mold 19 of the molding means 6 is lowered. Then, the upper end of the cylindrical body G is curled inward to form the curled portion J, and at the same time, the curled portion J is adjacent to the glued portion. After the molding, the half mold outer mold 18 of the molding means 6 is opened and returned to the original position, and the molded concave mold 19 is raised and returned to the original position. At this time, it is preferable to slightly raise the mandrel 3 by slightly lowering the elevating plate 12 to slightly raise the face H with respect to the cylindrical body G.
[0028]
When the turning table 2 is turned to the bonding position E, the curl portion J of the tubular body G is pressed down by the lowering of the pressing plate 20 of the bonding means 7 as shown in FIG. As the mandrel 3 is raised by lowering the stopper 12 until the stopper 12 contacts the stopper 14, the face H is moved to the gluing position. Then, the face H and the peripheral wall K of the tubular body G are bonded together, and the face H is brought into contact with the curled portion J of the tubular body G to form the paper container L. At this time, since the glue I is excessively applied at the glue position C, the face H and the curled portion J of the cylindrical body G are bonded by the excess glue I extruded by the movement of the face H. .
[0029]
When the turntable 2 is turned to the discharge position F, as shown in FIG. 8, the lifting plate 12 forming a part of the discharge means 8 is raised until it comes into contact with the inner mold 11 of the mandrel 3, and the vacuum adsorber is moved. 21 is lowered and the face H of the paper container L is vacuum-sucked, then raised, swiveled up on the chute 24 and opened. Then, the paper container L is pulled out from the inner mold 11 of the mandrel 3, moved to the chute 24, and then discharged from the chute 24 to the outside of the machine.
[0030]
Hereinafter, the same steps are sequentially repeated to manufacture the paper container L continuously. The manufactured paper container L has a bottomed cylindrical shape with a circular cross section.
Means 4 to 8 for controlling each step are arranged at each of the stop positions A to F of the turntable 2 which is turned while stopping, and the paper container L is manufactured sequentially from the cylindrical body G and the face H. The paper container L can be efficiently manufactured in a small space.
[0031]
When the diameter and the shape of the paper container L are different, the inner mold 11 of the mandrel 3, the outer mold 18 of the molding means 6, and the concave mold 19 are exchanged. In this case, the mandrel 3 provided at each of the stop positions A to F of the turning table 2 has to be replaced not by the whole but only the inner mold 11, so that the replacement operation is easy and the cost is reduced. Can do things.
[0032]
In the above example, the turning table 2 has a cylindrical body supply position A1, a face supply position A2, a preliminary (play) position A3, a positioning position B, a gluing position C, a forming position D, a bonding position E, and a discharging position. Although the vehicle turns while stopping at the position F, the present invention is not limited to this. For example, the supply position A may be united or the spare (play) position A3 may be omitted.
The gluing means 5 is composed of the revolving disk 16 and the gluing gun 17 in the above example, but is not limited thereto, and may be composed of, for example, a gluing roller.
In the above example, the forming means 6 is a single means for curling the upper end of the cylindrical body G inward at once, but is not limited to this. A plurality of shapes in which the upper end of the shape G is gradually curled inward may be used. In this case, the curl portion can be precisely and beautifully formed with a small forming force, and the manufacturing speed can be increased.
In the above-mentioned example, the forming concave part 19 is capable of moving up and down, but the forming means 6 is not limited to this, and may be, for example, movable up and down and rotatable. In this way, the upper end of the cylindrical body G can be easily curled by the downward pressure and rotation of the molding concave mold 19, and the curled portion can be more precisely and beautifully formed.
In the above example, the cylindrical body G is a so-called one-round winding cylinder, but is not limited thereto, and may be, for example, a so-called spiral cylinder.
In the above example, the cylindrical body G and the face H are supplied manually at the cylindrical body supply position A1 and the face supply position A2. However, the present invention is not limited to this. good.
In the above example, the curled portion J and the face H of the cylindrical body G are bonded to each other. However, the present invention is not limited to this. For example, the bonding may not be performed.
Although the cross section of the paper container L is circular in the above example, the present invention is not limited to this, and may be, for example, an elliptical shape or a polygonal shape.
[0033]
【The invention's effect】
As described above, according to the present invention, the following excellent effects can be obtained.
(1) Consisting of a swivel, mandrel, positioning means, gluing means, forming means, bonding means, and discharging means, and especially the mandrel is attached to and detached from a support shaft having a diameter smaller than the inner diameter of the cylindrical body. And an inner mold fitted to the inside of the upper part of the cylindrical body so that the upper part of the cylindrical body can be clamped with the inner mold of the mandrel. Since the outer mold is provided, the face can be easily inserted, and the curled portion can be easily and beautifully formed.
(2) The mandrel includes a support shaft having a diameter smaller than the inner diameter of the cylindrical body, an inner mold detachably mounted on the upper part of the shaft, and fitted to the upper inner side of the cylindrical body, and a molding means. Is provided with a half-split outer mold that can clamp the upper part of the cylindrical body with the inner mold of the mandrel, so that it can be easily manufactured even if the diameter or shape of the paper container is different.
[Brief description of the drawings]
FIG. 1 is a plan view showing an outline of a paper container manufacturing apparatus of the present invention.
FIG. 2 is a vertical sectional side view of a cylindrical body supply position in FIG. 1;
FIG. 3 is a vertical sectional side view of a face supply position in FIG. 1;
FIG. 4 is a vertical sectional side view of a positioning position in FIG. 1;
FIG. 5 is a vertical sectional side view of the gluing position in FIG. 1;
FIG. 6 is a vertical side view of a molding position in FIG. 1;
FIG. 7 is a vertical side view of the bonding position in FIG. 1;
FIG. 8 is a vertical side view of a discharge position in FIG. 1;
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 ... Apparatus for manufacturing paper containers, 2 ... Turning table, 3 ... Mandrel, 4 ... Positioning means, 5 ... Pasting means, 6 ... Forming means, 7 ... Bonding means, 8 ... Discharging means, 9 ... Body, 10 ... Support shaft, 11: inner mold, 12: elevating plate, 13: guide rod, 14: stopper, 15: stepped press die, 16: revolving disk, 17: glue gun, 18: outer die, 19: molded concave die, 20 ... Pressing plate, 21 ... Vacuum suction device, 22 ... Elevating cylinder, 23 ... Arm, 24 ... Chute, A ... Supply position, A1 ... Tube body supply position, A2 ... Sheet supply position, A3 ... Preliminary position, B ... Positioning Position, C: gluing position, D: forming position, E: bonding position, F: discharging position, G: tubular body, H: face, I: glue, J: curl, K: peripheral wall, L: paper container.

Claims (4)

A revolving disk that rotates while stopping at a supply position, a positioning position, a gluing position, a molding position, a bonding position, and a discharge position; and a tubular body that is provided on the revolving disk and is externally inserted at the supply position. A mandrel into which a face is inserted from the upper end of the body into the inside, positioning means provided at a positioning position of the revolving machine for positioning the face to a retreat location beyond the gluing location with respect to the cylindrical body; Gluing means provided at the attaching position and applying glue to the gluing location of the cylindrical body, and forming means provided at the forming position of the revolving wheel and curling the upper end of the cylindrical body inward to form a curled portion And a laminating means provided at the laminating position of the revolving lathe to move the face to the gluing location and adhere to the peripheral wall of the cylindrical body, and abut the curl portion to form a paper container, and discharge the revolving lathe. Ejects paper containers from swivel and mandrel The mandrel includes a support shaft having a diameter smaller than the inner diameter of the cylindrical body, and an inner mold detachably attached to the upper portion of the support shaft and fitted inside the upper portion of the cylindrical body. The manufacturing apparatus for a paper container, wherein the forming means includes a half-shaped outer die capable of holding the upper part of the tubular body between the inner die and the inner die of the mandrel. The apparatus for manufacturing a paper container according to claim 1, wherein the supply position includes a cylindrical body supply position and a face supply position. A gluing means is provided so as to be able to move up and down and swivel and radiates glue around by a centrifugal force, and a gluing gun that can go up and down in synchronization with the swivel disk and sprays glue at the center thereof, The apparatus for manufacturing a paper container according to claim 1, comprising: The apparatus for manufacturing a paper container according to any one of claims 1 to 3, wherein the discharging means includes a vacuum suction device for suctioning a face of the paper container.

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