JPH03275419A - Packing apparatus of circular article - Google Patents

Abstract

PURPOSE:To pack respective circular articles in a sealed condition and realize a perfect automation of operations, by rolling in packing materials covering both sides of articles to be packed, and sealing along the inner periphery. CONSTITUTION:Film 2, 2 wound off from rolls 3, 3 is rolled in on the outer periphery of a tire 1 and heat-sealed by a sealer 38 and simultaneously heat-cut. The tire 1 equipped with a sleeve 5 is transferred to a heater to pass through the inside. The whole sleeve 5 is constricted with heat to contact at the outer periphery of the tire 1 and both sides of the tire 1 is covered with film 2, 2 to obtain an intermediate product. The film 2, 2 covering both sides of the tire 1 is rolled in the inside of the tire by a circular sealer 64 inserting from the both sides of the tire 1 and heat-sealed along the inner periphery of the tire 1 and at the same time cut with heat for the intermediate product. A final product sealed closely and covered by the film 2, 2 on the whole surface is completed by removing the unnecessary central part.

Description

DETAILED DESCRIPTION OF THE INVENTION "Field of Industrial Application" The present invention relates to a device for hermetically packaging various annular objects, such as tires or coiled wire objects such as electric wires.

"Prior art and its problems" Conventionally, when wrapping the above-mentioned circular objects, so-called gaiter wrapping is used, in which a band-shaped packaging material such as paper or film is wrapped and wrapped in a spiral. However, such gaiter-wrapped packaging is difficult to completely seal, so it cannot completely prevent the intrusion of foreign substances such as dirt and dust, and the spirally wrapped packaging material easily slips. There is a problem in that a part of the packaged item may be exposed due to

Moreover, since the work of gaiter wrapping involves passing the roll of packaging material through the inside of the packaged item, it is extremely difficult to fully automate such work, and it can be done manually by workers or semi-automatically. The reality is that it is being done.

The present invention has been made in view of the above-mentioned circumstances, and an object of the present invention is to provide a packaging device that can package various annular objects in a sealed state and fully automate the operation.

"Means for Solving the Problems" In order to achieve the above object, the present invention is a packaging device for packaging an annular object with a heat-shrinkable packaging material while transporting it in an upright state, comprising: A peripheral sealing machine for wrapping and sealing a packaging material that is wider than the circular object to be packaged in a cylindrical shape around the outer periphery of the packaged object; and a peripheral sealing machine installed after the peripheral sealing machine to heat the packaged object. A heating device for heat-shrinking both open ends of the cylindrical packaging material wrapped around the outer periphery of the packaged object so as to cover both sides of the packaged object by passing through the inside of the cylindrical packaging material. , an inner periphery sealing machine provided after the heating device for winding the packaging material covering both sides of the object into the inside of the object and sealing along the inner periphery thereof. It is characterized by the fact that

In this case, it is conceivable to provide an upright device upstream of the outer periphery sealing machine for uprighting the packaged object in an overturned state.

Further, it is preferable that the outer periphery sealing machine and the heating device are provided with a conveyor that transports the packaged items in an upright state by sandwiching them from above and below to prevent them from falling over. It is desirable to include a blower for blowing heated air onto the packaged items.
It is desirable that the inner periphery sealing machine is provided with positioning means for positioning the object to be packaged.

"Function" The packaging device of the present invention first wraps the packaging material around the outer periphery of the packaged object in an upright state using a peripheral sealing machine and heat-seals the overlapping portion, thereby: A cylindrical packaging material is attached to the outer circumference of the object to be packaged.

Then, the object to be packaged with the packaging material attached thereto is transferred in an upright state to a heating device and passed through the heating device, thereby causing the entire packaging material to heat-shrink and tightly adhere to the object to be packaged. Both open ends of the cylindrical packaging material are shrunk to cover both sides of the packaged item.

After that, the packaged item is transferred to the inner periphery sealing machine in an upright state, and the packaging material covering both sides of the packaged item is rolled inside the packaged item and heat-sealed along the inner periphery. do.

As a result of the above, the entire surface of the packaged item is tightly covered with the packaging material and is completely sealed.

"Example" Hereinafter, one embodiment of the present invention will be described with reference to the drawings.

1 to 8 are diagrams showing the schematic configuration of the packaging device of this embodiment. Before explaining the configuration of this device, first,
The work procedure for packaging tires using this device and the packaged products obtained thereby are shown in Figures 9 to 1.
This will be explained with reference to FIG.

First, as shown in FIG. 9(i), a heat-shrinkable film (
Packaging materials) 2.2 are pulled out from the rolls 3.3, their ends are glued together, and this is attached to the tire.
Place it vertically in front of the Then, if the tire l, which is stood up so that its center axis is substantially parallel to the roll 3, is transferred and passed between the rolls 3.3, the roll 3.
．． 3, the film 2.2 is pulled out, and as shown in the same figure (b
) After passing through the state shown in (C) of the same figure, the film 2
．． 2 is wrapped around the outer periphery of the tire 1. Therefore, the film 2.2 wrapped around the outer circumference of the tire 1 is (C)
As shown in FIG. 3, heat sealing is performed by a sealing device 38 at a position in front of the roll 3.3, and heat cutting is performed at the same time. As a result, the sleeve 5 made of the cylindrical film 2.2 is attached to the outer circumference of the tire l,
At the same time, the films 2.2 drawn out from each roll 3.2 are again bonded to each other in the state shown in (1).

Next, the tire l to which the sleeve 5 is attached is transferred to a heating device and passed through the heating device. As a result, the entire sleeve 5 is heat-shrinked and comes into close contact with the outer periphery of the tire 1, and both open ends of the sleeve 5 are narrowed, and both sides of the tire 1 are also covered with the film 2, as shown in FIG. 1θ. , 2 is obtained.

Next, as shown in FIG. 11(a), the intermediate product is sealed with a circular sealing device 64 that enters the center of the tire l from both sides of the tire l, as shown in FIG. 11(b). The film 2.2 covering both sides is wound inside the tire l, and both are heat-sealed along the inner periphery of the tire l and heat-cut at the same time. and,
By removing the unnecessary central portion, a final product is completed in which the entire surface is covered with the film 2.2 and sealed, as shown in FIG. 2(c).

In the product obtained by such a procedure, the film 2, which is the packaging material, is in close contact with the entire surface of the tire 1, which is the object to be packaged, and the tire 1 is completely sealed. It is possible to reliably prevent foreign matter from entering, and there is no possibility that the packaging material will shift and the packaged item will be exposed, unlike when a band-shaped packaging material is spirally wrapped around a gaiter.

The apparatus of this example is configured to continuously and automatically perform the above steps to obtain a packaged product as shown in FIG. A erecting device A1 for erecting a tire l, which is an article to be packaged; a peripheral sealing machine B1 performing the process shown in FIG. 9; a cylindrical sleeve 5 made of a film 2; Heating device C1 for producing the intermediate product shown in the figure Inner circumferential sealing machines for performing the steps shown in FIG. 11 are arranged in series in that order. Hereinafter, their configuration will be explained in detail with reference to FIGS. 1 to 8.

The upright device A shown in FIGS. 1 and 2 includes a conveyor 10 for transporting tires 1 in an overturned state, two upright plates 11, 11 provided on both sides of the terminal end of the conveyor 10, and an upright device A shown in FIGS. When the plates 11, 1.1 stand up almost vertically, the three overturn prevention plates 12 stand upright in opposing positions.
Equipped with... The upright plates 11.11 are connected to a bottom plate 13 that is perpendicular to them, and an air cylinder 14 is connected to the base of the upright plate 11 through a link mechanism 15. It is meant to be defeated. The starting switch 17 of the air cylinder 14 is attached to the bottom plate 13, and at the same time when the tire 1 transferred by the conveyor 10 is pressed against the bottom plate 13, the starting switch 17 is turned on and the air cylinder 14 is activated. Stand up board 11 by
．． 11 stands up to make the tire 1 stand up, and the tire 1 is made to stand on its own by being sandwiched between the upright board 11, 11 and the overturn prevention board 12...

The above-mentioned upright plates 11, 11 and overturn prevention plates 12... are movable toward and away from each other by a feed screw mechanism 18 so that the distance between them can be adjusted in accordance with the width dimension of the tire 1 that is the object to be packaged. ing. The feed screw mechanism 18 is connected to a bottom plate 19 fixing the lower end of the fall prevention plate 12... and the shaft 1.
Nut members 20.2 each fixed to both sides of 6.
0, and the screw shaft 21 is screwed onto the screw shaft 2.
The nut member 20 is rotated by the motor 22.
20 along the threaded shaft 21 at the same time.

Note that the reference numeral 23 in FIG. 2 is a motor for driving the conveyor 10. Further, the reference numeral 30 in FIG. 1 is a bushing which is a component of the next-stage outer periphery sealing machine B, which will be described later. It is also possible to make the tire 1 stand up on its own by dropping it into a groove without providing the above-mentioned fall prevention plate 12... by standing up the tire 1 with the above-mentioned upright plates 11°11.
An erecting device configured in this manner may be employed.

Next, the outer periphery sealing machine B shown in FIGS. 3 and 4 includes the above-mentioned pusher 30 for pushing into the casing 31 the tire 1 which has been erected by the above-mentioned upright device A and made to stand on its own;
A pair of conveyors 32.33 are provided on the upper and lower sides of the casing 31 to sandwich the tire 1 in an upright state from above and below to prevent it from falling and to transport it forward; A sealing device 38 is provided. The sealing device 38 consists of a hot plate heater 36 and a receiving roll 37, each driven by an air cylinder 34, 35 and moved up and down so as to move toward and away from each other.

At the entrance of the casing 31, a film 2.2, which is a packaging material, is positioned in front of the sealing device t38 and is guided by rollers 39 and placed along the vertical direction. There is. The films 2, 2 are pulled out from two rolls 3.3 and adhered to each other at an intermediate position between the hot plate heater 36 and the receiving roll 37. film 2
．． It is sandwiched between a pair of drive rolls 40.40 for drawing out the paper 2, and is wound around a movable roll 41.41 in which a start switch for the drive rolls 40.40 is incorporated.

In this outer periphery sealing machine B, the tire 1 is
When pushed into the casing 31, the film 2゜2 disposed at the entrance of the casing 31 is pushed into the casing 31 together with the tire l, which causes the movable rolls 41, 41 to displace upward and release the start switch. is turned on, the drive rolls 40 and 40 operate, and the film 2
．． 2 is pulled out from each roll 3,3. After the tire 1 is completely fed into the casing 31, the hot plate heater 36 descends and at the same time the receiving roller 37 rises to sandwich the film 2.2 between them. It is designed to be heat-sealed and heat-cut at the same time. This results in
As shown in FIG. 9(c), a sleeve 5 is formed around the outer periphery of the tire 1, and at the same time, the cut films 2.2 are bonded together again at the casing 31 at the periphery.

Note that the reference numeral 42 in FIG. 3 indicates each conveyor 32.33.
A motor 43 for driving the conveyor 3 moves the upper conveyor 32 up and down in accordance with the outer diameter of the tire l.
2.33 is a motor for adjusting the distance between the two; 44 is an air cylinder for pushing down the upper conveyor 33 to adjust the pressing force on the tires l; 45 is a hot plate heater 3;
This is a guide rod for guiding the vertical movement of the receiving roll 37 and the receiving roll 37.

The tire 1 to which the sleeve 5 made of the film 2.2 is attached by the above-mentioned outer periphery sealing machine B is conveyed to the above-mentioned conveyor 3.
2.33 at the same speed, it is transferred forward and transferred to the next stage heating device C shown in FIGS. 5 and 6.

Note that during this transfer, the conveyors 32 and 33 are driven at the same speed so that the tire 1 does not rotate, so that the sleeve 5 does not shift relative to the tire 1.

The heating device C includes conveyors 51 and 52 arranged above and below inside the casing 50, a heater (as shown) provided inside the casing 50, and a blower 53 installed on the top surface and both side surfaces inside the casing 50, respectively. ,53.5
4... is provided.

The upper and lower conveyors 51 and 52 are each driven by motors 55 and 55.
The speed and direction of transport can be adjusted arbitrarily. Further, the upper conveyor 51 has mounting members 56 at both ends thereof.
．． 56 and the mounting members 56.5
6 is adapted to move up and down by a feed screw mechanism 58 driven by a motor 57, and by moving the conveyor 51 up and down in accordance with the outer diameter of the tire 1, the tire l is moved by the upper and lower conveyors 51 and 52. It is designed so that it can be held in an upright position and transported while preventing it from falling over. If both conveyors 51 and 52 are driven in the same direction and at the same speed, the tire l sandwiched between them will be transferred without rotating, but both conveyors 51 and 52 will be transported without rotating.
If the tires 52 are driven in opposite directions, if only one of them is driven, or if their speeds are made different, the tire l will be transported while rotating about its own axis.

When the tire 1 to which the sleeve 5 is attached is passed through this heating device C and heated, the sleeve 5 is thermally shrunk, and thereby the films 2, 2 forming the sleeve 5 are brought into close contact with the outer periphery of the tire 1. At the same time, both opening ends are narrowed, and both side surfaces of the tire 1 are covered with the film 2.2. That is, an intermediate product in the state shown in FIG. 1O is obtained.

When passing through the heating device C, the tire 1 is rotated and transferred at a predetermined speed by adjusting the transfer speed and transfer direction of both conveyors 51.52 as described above, and the blowers 53.54 Casing 5
By circulating the heated air inside the casing 50, the temperature difference between the top and bottom inside the casing 50 is eliminated, and the entire sleeve 5 can be evenly heated and evenly heat-shrinked.As a result, the film on the tire l This can reliably prevent the adhesion of film 2.2 from becoming insufficient or wrinkles from forming on film 2.2.

Moreover, the blower 54 provided on the side of the casing 50...
By blowing heated air onto the tire 1, the blown heated air flows through the center of the tire 1, thereby causing the films 2, 2 covering the sides of the tire 1 to sag. An opening is formed in the center of the film 2.2, thereby effectively preventing wrinkles from forming on the film 2.2.

Note that the transport speed and rotation speed of the tire 1 are determined by the film 2.
It may be set to be optimal in relation to the material of tire 2 and the heating temperature, and if necessary, the transfer of tire 1 may be stopped to secure heating time. In that case, it is preferable to drive the upper and lower conveyors 51 and 52 in opposite directions at the same speed to stop the tires 1 at the normal position while rotating. In addition, the amount of air blown by the left and right blowers 54 can be increased or decreased as needed, and the amount of air blown can be adjusted by, for example, inverter control so that the amount of air blown on the left and right sides can be balanced. It is desirable to keep it.

The intermediate product obtained by passing through the heating device C is transferred by the conveyor 51, 52 to the next inner circumferential sealing machine shown in FIGS. 7 and 8.

This inner circumference sealing machine includes a tilting table 61 provided at the inner lower part of the casing 60, a positioning means 62 for positioning the tire 1, a pair of side plates 63, 63 for preventing the tire 1 from falling, and a positioning means 62 for positioning the tire 1. A circular sealing device 6 enters the inside of the tire 1 and seals the films on both sides covering the side surfaces of the tire 1 along the inner circumference of the tire 1.
4.

The inclined table 61 is inclined so that the front side thereof is lowered, and a stopper 65 is retractably provided at the frontmost part of the inclined table 61. Then, the tire 1 transferred from the heating device C in the previous stage rolls on this slope 61, and the stopper 65
It is designed to stop when it hits.

The positioning means 62 moves the tire 1 that has hit the stopper 65 and stopped so that its axis is aligned with the sealing device 64 (
The two support rods 66 and 66 are movable up and down on the top side of the tilt table 61, and the support rods 66 and 66 are movable up and down on the top side of the casing 60. It consists of a positioning sensor 67.

The support rods 66, 66 are provided at positions equidistant from the axis O, and the chains 70 are wound around rollers 69 while being guided by guide rods 68, 68, respectively.
．． 70 and rises slightly diagonally upward toward the axis 0. Further, the above-mentioned positioning sensor 67 is composed of a light emitter 71 and a light receiver 72, each of which is attached to a guide rod 74 via a mounting member 73 so as to be vertically movable. In addition,
The light projector 71 is configured to emit light in a state that is slightly inclined with respect to the direction in which the tire l is transported, and the light receiver 72 is arranged at a position where it can receive the emitted light.

Support rod 66.6 constituting the above-mentioned positioning means 62
6 and the positioning sensor 67, the tire 1 is connected to the inclined table 61.
When transferred from above, they retreat downward and upward, respectively, and in this state, their distances from axis 0 are set to be equal. Then, the tire l hits the stopper 65 and stops I; later, the support rod 66
．． 66 rises to lift the tire l, and the simultaneous j-two positioning sensors 67 descend at the same speed as the rising speed of the support rods 66 and 66. As a result, when the tire l is lifted by the support rods 66 and 66, the tire 1 is automatically positioned in the longitudinal direction, and as the tire l further rises, the positioning sensor 67 descends and the light is emitted from the projector 71. At the same time that the light is blocked by the top of the tire 1, the lifting of the support rods 66, 66 and the lowering of the positioning sensor 67 are stopped, and at that point, the axis of the tire 1 is aligned with the axis of the sealing device 64. It automatically matches 0. By performing the positioning by straining I in this way, even if the outer diameter of the tire I, which is the object to be packaged, changes, its axis will automatically align with the axis 0 of the sealing device 64.

Note that in order to synchronize and move the support rods 66.66 and the positioning sensor 67 up and down at the same speed, the driving force of the motor 78 is configured to be transmitted to each support rod 66.66 and the positioning sensor 67 at the same time. has been done. That is, the chain 70.7 that drives both support rods 66°66
0 is wound on each one of the rolls 69, and the roll 7 for vertically moving the positioning sensor 67.
7, the rotational force of the motor 78 is applied to the rolls 69, 6.
A chain 79 for transmission to the rolls 69.6 is wound around the rolls 69.6 when the motor 78 is driven.
9.77 are driven simultaneously, thereby each support rod 66
．． 66 and positioning sensor 67 are configured to move up and down simultaneously.

Further, the side plates 63.63 have circular openings through which the sealing device 64 can pass, and the intervals between the side plates 63.63 can be adjusted according to the width dimension of the tire 1. In order to make it possible, the feed screw mechanism 80 provided at each of the upper end and the lower end can be moved toward and away from the upper end. 81 is a motor for moving the side plates 63, 63 into and out of contact, 82 is a chain for transmitting its rotational force to the feed screw mechanism 8o, 83 is a screw shaft that constitutes the feed screw mechanism 8o; It is a nut member.

Further, the sealing device 64 includes an annular sealing heater 85 attached to one side of the casing 60;
An annular cutting heater 86 coaxially arranged inside the heater 86
, and attached to the other side of the casing 6o t
It is composed of a circular receiving plate 87, and the sealing heater 85, cutting heater 86, and receiving plate 87 are guided by guide rods 91... by being driven by air cylinders 8B, 89, 90, respectively. Side plate 6 above
It passes through an opening formed at 3° 63 and enters the inside of the tire 1 positioned by the positioning means 62. Then, the sealing heater 85 and the receiving plate 87 enter the inside of the tire 1 and come into close contact with each other at approximately the center position in the thickness direction of the tire 1, thereby removing the film 2.2 that covered the side surface of the tire 1. At the same time as it is wound inside the tire 1, it is heat-sealed along the inner circumference of the tire l, and then the cutting heater 86 enters the inside of the tire l and heat-cuts the unnecessary part inside the sealed part. There is. The cut unnecessary portion is discharged to the outside of the casing 60 through a discharge chute (not shown). In addition, since the tire 1 is located between the side plates 63 and 63 when the inner periphery is sealed by the sealing device 64, the tire 1 does not fall over or shift significantly in the lateral direction.

If the above-described sealing device 64 seals along the inner circumference of the tire l and removes unnecessary parts, then the seal shown in FIG. 11(c)
The final product shown in is completed. Therefore, the support rod 66.6
6 is lowered and the positioning sensor 67 is raised, the stopper 65 is retracted to the side, and the product is rolled on the inclined table 61 and taken out.

In the packaging apparatus described above, the series of steps shown in FIGS. 9 to 11 can be performed continuously and automatically using the outer periphery sealing machine B1 heating device C1 inner periphery sealing machine, Excellent work efficiency can be obtained.

The above device performs a series of steps while transferring the tire 1 in an upright state, so that it is possible to heat the tire 1 while rotating it, especially when passing through the heating device C. Therefore, it is possible to heat-shrink the entire sleeve 5 evenly, and the film 2.
This makes it possible to reliably prevent problems such as insufficient adhesion of the film 2 to the tire 1 and wrinkles of the film 2.

It goes without saying that the object to be packaged is not limited to tires, but can be similarly applied to various types of annular objects, such as wire objects such as electric wires wound into coils.

Further, it is also possible to introduce the tire 1 in an upright state to the outer periphery sealing machine B, and in that case, the upright device A may be omitted. In addition, both the outer periphery sealing machine B8 and the heating device C in the apparatus of the above-mentioned embodiment are configured to transport the tire 1 by sandwiching the tire 1 between the upper and lower conveyors 32, 33.51° 52 to prevent the tire from falling over. , a conveyor is provided only on either the upper or lower side, and the other is equipped with a tire l
It is also possible to provide a fixed guide plate or the like on which the rollers can roll.

In addition, it goes without saying that the configuration of each part is not limited to the above-described embodiment and can be modified as appropriate.

"Effects of the Invention" As explained in detail above, the present invention provides a peripheral sealing machine that wraps a heat-shrinkable packaging material around the outer periphery of a packaged object in a cylindrical shape and seals it, and The device is equipped with a heating device that heats and heat-shrinks the packaging material, and an inner periphery sealing machine that rolls the heat-shrinked packaging material inside the packaged item and seals it along the inner periphery. Since the system is configured to carry out a series of processes while being transported in a state of be.

If an upright device is installed before the outer sealing machine, the packaged items transferred in an overturned state can be automatically raised up and sent to the outer sealing machine. If a conveyor is provided to sandwich the upright packaged items from above and below, it is possible to transfer the packaged items while preventing them from falling over, and it is also possible to transfer the packaged items while rotating them on their own axis. By installing a blower on the side of the heating device and blowing heated air onto the packaged items, the entire packaging material can be evenly heat-shrinked.Furthermore, if the inner periphery sealing machine is equipped with a positioning means, , there is an advantage that sealing at the inner periphery can be performed reliably.

BRIEF DESCRIPTION OF THE DRAWINGS FIGS. 1 to 8 show an embodiment of a packaging device according to the present invention. FIGS. 1 and 2 schematically show the structure of the upright device in this packaging device, and FIG. t1g1 is a plan view, and FIG. 2 is a front view. 3 and 4 show the schematic structure of the outer periphery sealing machine in this packaging apparatus, with FIG. 3 being a side view and FIG. 4 being a front view. Fifth
6 and 6 show the schematic structure of the heating device in this packaging apparatus, with FIG. 5 being a side view and FIG. 6 being a front view. 7 and 8 show the schematic structure of the inner periphery sealing machine in this packaging apparatus, with FIG. 7 being a side view and FIG. 8 being a front view. 9 to 11 are diagrams for explaining the working procedure by the apparatus of this embodiment and the packaged products obtained thereby, and FIG. Figure 1O is a diagram showing the intermediate product obtained by passing through the heating device, Figures 11(a) to (C)
FIG. 2 is a diagram showing the steps performed in the inner periphery sealing machine. 6... Heater for cutting, 7... Receiving plate.

Claims (5)

[Claims] (1) A packaging device for packaging a circular object with a heat-shrinkable packaging material while transporting the circular object in an upright state, wherein the packaging material is wider than the circular object to be packaged. An outer periphery sealing machine for wrapping and sealing the outer periphery of an object in a cylindrical shape, and a peripheral sealing machine installed after the outer periphery sealing machine and heating the object while passing through the inside of the outer periphery sealing machine.
a heating device for heat-shrinking both open ends of a cylindrical packaging material wrapped around the outer periphery of the packaged item so as to cover both sides of the packaged item, and a heating device provided at a downstream stage of the heating device, An annular article comprising an inner periphery sealing machine for rolling the packaging material covering both sides of the object into the inside of the object and sealing along the inner periphery of the object. packaging equipment. (2) The annular article packaging apparatus according to claim 1, further comprising a erecting device for erecting an overturned object to be packaged upstream of the outer periphery sealing machine. (3) The outer periphery sealing machine and the heating device are each equipped with a conveyor that transports the packaged article in an upright state by sandwiching it from above and below to prevent it from falling over. 3. The packaging device for a circular object according to 1 or 2. (4) The apparatus for packaging an annular article according to any one of claims 1 to 3, wherein a side surface of the heating device is provided with a blower for blowing heated air onto the article to be packaged. (5) The annular article packaging apparatus according to any one of claims 1 to 4, wherein the inner circumference sealing machine is equipped with a positioning means for positioning the article to be packaged.