JP2001219913A - Packaging apparatus for annular product - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a novel packaging apparatus for annular products P to eliminate need of wrapping the product entirely with kraft paper K. SOLUTION: The annular product is fed in a lying state, rotated by 90 deg. and made to stand upright. A plurality of claws 10 are pressed against an inner peripheral surface of the product, the product is chucked by the claws, and a plastic film F is led to an outer peripheral surface of the product. The annular product is covered with the plastic film, and the film is heat-sealed by a heat-sealing mechanism 20, and the product is sleeve-packaged.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a device for packaging a ring-shaped product such as a coiled electric wire or a tire.

[0002]

2. Description of the Related Art As shown in FIG. 14, an elongated kraft paper K is generally guided in the axial direction of a ring-shaped product P, as shown in FIG. In addition, the ring-shaped product P is entirely wrapped by wrapping around the inner peripheral surface and gaiting, but there is a problem that the operation is not easy and requires time and labor. The same is true of unpacking, and the kraft paper K must be gradually unwound, requiring time and labor. There is also a problem that a large amount of dust is generated by the unraveled kraft paper K. In unpacking, it is conceivable that the kraft paper K is torn by a cutter, but this may damage the ring-shaped product P.

[0003]

SUMMARY OF THE INVENTION Accordingly, it is an object of the present invention to provide a new apparatus for packaging a ring-shaped product so that it is not necessary to completely package the ring-shaped product with kraft paper.

[0004]

According to the present invention, a ring-shaped product is sent by a conveyor, and the ring-shaped product is sent in a state of lying down. Further, the product reversing mechanism acts on the ring-shaped product, and the ring-shaped product is lifted from the conveyor, and is turned 90 °
Invert and stand upright. Thereafter, the product chuck mechanism acts on the ring-shaped product, and in the ring-shaped product, a plurality of claws are pressed against the inner peripheral surface of the ring-shaped product, the ring-shaped product is chucked by the claws, and after the ring-shaped product is chucked,
The plastic film is guided by the film guide mechanism, the plastic film is guided to the outer peripheral surface of the ring-shaped product, and the ring-shaped product is covered with the plastic film. Thereafter, the plastic film is heat-sealed by the heat-sealing mechanism, and the ring-shaped product is sleeve-wrapped.

[0005] In a preferred embodiment, a plurality of product chuck mechanisms are equidistantly spaced around the center of rotation of the turntable and are mounted on the turntable. Further, a product chuck position and a film seal position are selected at angular intervals corresponding to the angular intervals of the product chuck mechanism around the rotation center of the turntable, and the ring-shaped product is chucked at the product chuck position. Thereafter, the turntable rotates at a rotation angle corresponding to the angular interval of the product chuck mechanism, and the ring-shaped product is sent to the film seal position. Furthermore, at the film seal position, it is synchronized with the rotation of the turntable,
The film guide mechanism precedes the ring-shaped product, moves with a distance larger than the outer diameter of the ring-shaped product, and after the stop of the turntable, the film guide mechanism returns to the original position. This leads to the plastic film,
The ring-shaped product is coated. Thereafter, the plastic film is heat-sealed by the heat-sealing mechanism, and the ring-shaped product is sleeve-wrapped.

Further, a product chuck position, a film seal position, and a film heat shrink position are selected at angular intervals corresponding to the angular intervals of the product chuck mechanism around the rotation center of the turntable, and the sleeve packaging of the ring-shaped product is performed. Thereafter, the turntable is rotated again, and the ring-shaped product is sent to the film heat shrinking position, where the plastic film is heated and shrunk.

Further, a heat shrink mechanism is provided at the film heat shrink position, and the heat shrink mechanism has a casing and a hot air source. Then, the ring-shaped product is surrounded by the casing, hot air is blown into the casing, and the plastic film is heated and shrunk by the hot air.

[0008]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be described below.

In FIG. 1, this is a packaging device for a ring-shaped product, and has a conveyor 1. The conveyor 1 is for feeding a ring-shaped product P, and is composed of a roller conveyor. The ring-shaped product P is fed sideways, and a stopper 2 is provided.
To stop at that position and wait.

Further, a pair of arms 3 is used as a product reversing mechanism, and the arms 3 extend in the width direction of the conveyor 1,
It is arranged between the rollers, attached to the rotating shaft 4 and fixed. The rotating shaft 4 extends in the longitudinal direction of the conveyor 1 and is arranged along the side edge thereof. Further, as shown in FIG. 2, the lever 5 is fixed to the rotating shaft 4, and the cylinder 6 is connected to the lever 5. After the ring-shaped product P stops, the rotating shaft 4 is driven by the cylinder 6 and the lever 5. Rotate, the arm 3 pivots around the rotation axis 4,
The ring-shaped product P is pushed up by the arm 3. Further, the cradle 7 is connected to and supported by the cylinder 8, and the cylinder 8 is attached to and fixed to the rotating shaft 4.
Before turning of the arm 3, the cradle 7 is operated by the cylinder 8 in the width direction of the conveyor 1, moves forward, and moves forward.
Engages with the outer peripheral surface of the ring-shaped product P. Therefore, the cradle 7 and the cylinder 8 rotate integrally with the arm 3,
As shown in FIG. 3, the ring-shaped product P is lifted from the conveyor 1, inverted by 90 °, supported by the cradle 7, and stands upright.

Further, a plurality of claws 1 are attached to the product chuck mechanism 9.
0, the ring-shaped product P is turned upside down by 90 °, and in the upright position, the claws 10 are provided around the horizontal axis and are arranged at equal angular intervals. Each claw 10 is housed in the ring-shaped product P when inverted and upright. Further, the stopper 11 is connected to and supported by the cylinder 12, and before the arm 3 turns, the stopper 11 is operated by the cylinder 12 to move forward.
1 and stops at that position and stands upright. Thereafter, in the ring-shaped product P, each of the claws 10 is opened by a cylinder or a cam, the plurality of claws 10 are pressed against the inner peripheral surface of the ring-shaped product P, and the ring-shaped product P is chucked by the claws 10. Thereafter, the stopper 11 is operated by the cylinder 12, and the stopper 11 retreats from the ring-shaped product P.

Further, in this embodiment, a plurality of product chuck mechanisms 9 are arranged around the center of rotation of the turntable 13 at equal angular intervals, are mounted on the turntable 13, and are mounted on the turntable 13. Around, the product chuck position and the film seal position are selected at an angular interval corresponding to the angular interval of the product chuck mechanism 9, and the ring-shaped product P is chucked at the product chuck position. After that, turntable 13
Rotate with a rotation angle corresponding to the angular interval of the product chuck mechanism 9. For example, the four product chuck mechanisms 9 around the rotation center of the turntable 13
The turntable 13 is disposed at an angular interval of 0 °.
The product chuck position and the film seal position are selected at an angular interval of 90 ° around the rotation center of the turntable 13, and after the chuck of the ring-shaped product P, the turntable 13 is rotated by 90 °. It rotates with a rotation angle. Therefore, the ring-shaped product P rotates integrally with the product chuck mechanism 9 and the turntable 13 and is sent to the film sealing position.

Further, as shown in FIGS. 4 and 5, at the film sealing position, the plastic film F is guided by the film guide mechanism, and the plastic film F is guided to the outer peripheral surface of the ring-shaped product P. The ring-shaped product P is covered.
In this embodiment, a pair of horizontal guide rollers 14 is used as a film guide mechanism, and the horizontal guide rollers 14 are arranged at regular intervals in the vertical direction. The interval is larger than the outer diameter of the ring-shaped product P, and when the ring-shaped product P reaches the film sealing position, the horizontal guide roller 14 extends in the axial direction of the ring-shaped product P. Further, a pair of horizontal guide rollers 15 are arranged at a horizontal interval from the horizontal guide rollers 14, and the plastic film F is guided in the horizontal direction through one of the horizontal guide rollers 15, and is supplied to each of the horizontal guide rollers 14. And is guided in the horizontal direction to reach the other horizontal guide roller 15. One end of each horizontal guide roller 14 is the carriage 1.
The carriage 16 is mounted on and supported by a horizontal guide rod 17 and is movably guided.
Further, when the screw shaft 18 is screwed to the carriage 16 and the ring-shaped product P is sent to the film sealing position, the turntable 13 is moved to the film sealing position.
The screw shaft 18 is driven and rotated by the motor 19 in synchronization with the rotation of. Therefore, the carriage 16 moves along the guide rod 17, and the guide roller 14 precedes the ring-shaped product P and moves with a distance larger than the diameter of the ring-shaped product P. The direction is a tangential direction of the traveling locus of the ring-shaped product P. Therefore, the guide roller 14
As a result, the plastic film F is pulled and supplied, and the ring-shaped product P follows. Further, after the turntable 13 stops, the motor 19 rotates the screw shaft 18.
Is driven, the carriage 16 moves in the reverse direction, returns to the original position, and the horizontal guide roller 14 moves across the ring-shaped product P on both the upper and lower sides of the ring-shaped product P,
Return to the original position. Therefore, the plastic film F is guided to the outer peripheral surface of the ring-shaped product P, and the plastic film F covers the ring-shaped product P.

Further, a pair of heat seal bars 20 is used as a heat seal mechanism. As shown in FIG. 6, the carriage 16 and the horizontal guide roller 14 move over the heat seal bar 20 and return to the original position. ,Stop. After that, each heat seal bar 20 is operated by a driving mechanism such as a cylinder to move down and up, and the plastic film F is heat-sealed and melted by the heat seal bar 20. As a result, the ring-shaped product P is sleeve-wrapped. The plastic film F has a width larger than the thickness of the ring-shaped product P. When the plastic film F is sleeve-wrapped, the plastic film F extends beyond both end faces of the ring-shaped product P and projects in a tubular shape.

Further, the next product is fed by the conveyor 1, and the next chuck mechanism 9 moves to the product chuck position with the rotation of the turntable 13. Thereafter, at the film sealing position, when the ring-shaped product P is covered with the plastic film F and is sleeve-wrapped, the next product is lifted from the conveyor 1 and the next product is removed.
It flips 0 °, stands upright and it is chucked at the product chuck position.

Further, in this embodiment, not only the product chuck position and the film seal position, but also a film preheating position and a film heat shrinking position are added thereto.
Around the rotation center of the turntable 13, a product chuck position, a film sealing position, a film preheating position, and a film heating shrinkage position are selected at an angular interval of 90 °, and after the sleeve packaging of the ring-shaped product P,
The turntable 13 rotates again, and the ring-shaped product P is sent to the film preheating position. In addition, turntable 1
With the rotation of 3, the next product P is sent to the film sealing position. At the film sealing position, the guide roller 14 moves to the position shown in FIG. Returning to the position of FIG. 6, the next product is covered with the plastic film F and sleeve-wrapped, like the previous product. If there is no next product, the carriage 16 and the horizontal guide roller 14 move to the position in FIG. 7 after the sleeve packaging of the previous product. Thereafter, the next chuck mechanism 9 moves to the film sealing position, and is not disturbed by the plastic film F.

After heat sealing and fusing, the plastic film F is fed by the feed roller 21 and the fusing position shifts by a certain amount. Thereafter, when the horizontal guide roller 14 moves to the position shown in FIG. 5, the plastic film F is pulled by the guide roller 14,
Along with this, the plastic film F is unwound from the web 22, passes through the dancer rollers 23, and is supplied to the horizontal guide rollers 14.

On the other hand, a ring-shaped product P sleeve-wrapped
Is sent to the preheating position, as described above. However, as shown in FIGS. 8, 9 and 10, a preheating mechanism is provided at the film preheating position. The mechanism preheats the plastic film F. For example, a pair of hot air ducts 24 are used as a preheating mechanism, and the hot air ducts 24 are arranged at regular intervals in the vertical direction, and when moved to the film preheating position, the ring-shaped product P Placed between. After that, the plastic film F overhanging both ends of the ring-shaped product P in a cylindrical shape
In the position of, hot air blows out from each hot air duct 24,
The plastic film F is sprayed onto the plastic film F, and the plastic film F is preheated by hot air. Therefore, the plastic film F shrinks to some extent, and thereafter,
The plastic film F is held on the ring-shaped product P and does not shift. Further, in this embodiment, in each product chuck mechanism 9, the pawl 10 is attached to the rotating shaft 25, and the rotating shaft 25 and the pawl 10 are driven by the motor 26, the timing belt 27 and the roller 28 at the same time as the hot air is blown out. Then, the ring-shaped product P and the plastic film F are rotated, and the cylindrical plastic film F is uniformly preheated.

Further, a heat shrink mechanism is provided at the film heat shrink position, and after the plastic film F is preheated, the turntable 13 is rotated again, and the ring-shaped product P is rotated.
Is sent to the film heat shrinking position, where the plastic film F is heat shrunk by the heat shrinking mechanism. For example, FIGS.
As shown in (1), the heat shrinking mechanism has a casing 29 and a hot air source. The casing 29 is divided into two parts and is divided along a horizontal plane. Further, a pair of cylinders 3
0 is connected to the split casing 29, and when the ring-shaped product P moves to the film heat shrinking position, the cylinder 3
By means of 0, the halved casing 29 is raised and lowered and opened, and the ring-shaped product P is arranged between the halved casings 29. Thereafter, the split casing 29 is lowered and raised by the cylinder 30 and closed, and the ring-shaped product P is surrounded by the casing 29. Further, a hot air source is connected to the port 31 of the casing 29, and after surrounding the ring-shaped product P, the hot air blows out through the port 31 of the casing 29 into the casing 29 and convection. Accordingly, the plastic film F is heated and shrunk by the hot air. In particular, with respect to the plastic film F that protrudes in a cylindrical shape beyond the both end surfaces of the ring-shaped product P, it is heated and shrunk toward both end surfaces of the ring-shaped product P, and both end surfaces are covered with the plastic film F. Further, in this embodiment, the ring-shaped product P is driven and rotated by the motor 26 at the same time as the hot air is blown out, so that the plastic film F is uniformly heated and shrunk.

This process is sequentially and alternately repeated. Therefore, as shown in FIG. 13, the heat seal line S is formed on the plastic film F, and the plastic film F is in close contact with the outer peripheral surface and both end surfaces of the ring-shaped product P, and the ring-shaped product P is tightly sleeved. Will be packaged.

[0021]

As described above, according to the present invention, the ring-shaped product P can be sleeve-wrapped with the plastic film F. Therefore, it is not necessary to wind the conventional kraft paper K around the outer peripheral surface and the inner peripheral surface of the ring-shaped product P, and it is not necessary to perform gaiter winding, and the intended purpose can be achieved.

[Brief description of the drawings]

FIG. 1 is a plan view showing an embodiment of the present invention.

FIG. 2 is a front view of the conveyor, the product reversing mechanism and the product chuck mechanism of FIG.

FIG. 3 shows the ring-shaped product of FIG.
It is a front view showing the state where it was chucked by the product chuck mechanism.

FIG. 4 is a plan view showing a state in which the ring-shaped product of FIG. 3 is sent to a film sealing position and the ring-shaped product is covered with a plastic film.

FIG. 5 is a front view of the film guide mechanism and the heat sealing mechanism of FIG. 4;

FIG. 6 is a front view showing a state in which the plastic film is heat-sealed by the heat-sealing bar of FIG. 5;

FIG. 7 is a front view showing a state where the plastic film of FIG. 6 is heat-sealed and blown.

8 is a plan view showing a state in which the ring-shaped product of FIG. 7 is sent to a preheating position, and a plastic film is preheated by a preheating mechanism.

FIG. 9 is a front view of the preheating mechanism of FIG.

FIG. 10 is a side view of the preheating mechanism of FIG. 9;

11 is a side view showing a state in which the ring-shaped product of FIG. 9 has moved to the film heat shrinking position and the plastic film has been heat shrunk by the heat shrink mechanism.

FIG. 12 is a front view of the heat shrink mechanism of FIG. 11;

FIG. 13 is a perspective view of the ring-shaped product of FIG. 11;

FIG. 14 is a perspective view showing a state in which a ring-shaped product is entirely packaged with conventional kraft paper.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Conveyor 3 Arm 7 Cradle 9 Product chuck mechanism 10 Claw 13 Turntable 14 Horizontal guide roller 20 Heat seal bar 29 Casing P Ring product F Plastic film

Claims (4)

[Claims] 1. A conveyor for feeding a ring-shaped product sideways, and lifting the ring-shaped product from the conveyor.
A product reversing mechanism for inverting 90 ° and erecting, and after erecting the ring-shaped product, a plurality of claws are pressed against an inner peripheral surface of the ring-shaped product in the ring-shaped product, and the ring-shaped product is moved by the claws. A product chuck mechanism for chucking, a film guide mechanism for guiding the plastic film after chucking the ring-shaped product, guiding the plastic film to the outer peripheral surface of the ring-shaped product, and covering the ring-shaped product with the plastic film. And a heat sealing mechanism for heat-sealing the plastic film after coating the ring-shaped product and sleeve-wrapping the ring-shaped product. 2. A plurality of said product chuck mechanisms are arranged at equal angular intervals around a rotation center of a turntable, mounted on said turntable, and a product chuck position and a film seal are provided around said rotation center. A position is selected at an angular interval corresponding to the angular position of the product chuck mechanism, the ring-shaped product is chucked at the product chuck position, and then the turntable is rotated corresponding to the angular interval of the product chuck mechanism. Rotate at an angle, send the ring-shaped product to the film sealing position, and further, at the film sealing position, synchronize with the rotation of the turntable, and make the film guide mechanism precede the ring-shaped product; Move at a distance greater than the outer diameter of the product, and After stopping the film, the film guide mechanism is returned to the original position, thereby guiding the plastic film, covering the ring-shaped product, and then heat-sealing the plastic film by the heat sealing mechanism, The packaging device according to claim 1, wherein the ring-shaped product is sleeve-wrapped. 3. A plurality of the product chuck mechanisms are arranged at equal angular intervals around a rotation center of the turntable, and are mounted on the turntable, and a product chuck position and a film seal are provided around the rotation center. A position and a film heat shrinking position are selected at an angular interval corresponding to the angular interval of the product chuck mechanism, and the ring-shaped product is chucked at the product chuck position. Rotate at a rotation angle corresponding to the interval, send the ring-shaped product to the film sealing position, cover the ring-shaped product with the plastic film at the film sealing position, heat the plastic film by the heat sealing mechanism Seal and
The ring-shaped product is sleeve-wrapped, and thereafter, the turntable is rotated again, the ring-shaped product is sent to the film heat shrinking position, and the plastic film is heat shrunk at the film heat shrinking position. The packaging device according to claim 1, wherein 4. A heat shrink mechanism is provided at the film heat shrink position. The heat shrink mechanism has a casing surrounding the ring-shaped product and a hot air source for blowing hot air into the casing. The packaging device according to claim 3, wherein the plastic film is shrunk by heating.