JPH0977016A - Packing device for ring-shaped object - Google Patents

Abstract

PROBLEM TO BE SOLVED: To improve the operating efficiency and lower the production cost by a method wherein a diametrically-large ring-shaped object is held by a clasping device provided on an index table and, while the ring-shaped object is being rotated jointly with rotational shift in position, the process of covering it with packing film and that of making the film shrink are carried out continuously. SOLUTION: An object 1 brought to a push position A by a conveyor 4 is fed to a receiving position B by a pusher 7 and a clamp in a clamping device 24 is inserted into a hollow part 3 of the object 1 and set therein. After this clamping, an index table 9 is turned 90 deg. and the clamping device 24 is moved to a packing position C. Then a strip of packing film 47 is paid off by a traveling roller 45, the packing film 47 is slackened by a feeding roller 43, and by putting the clamping device 24 in a position of lying on its side the object 1 is covered throughout its circumferential surface with the packing film 47, which film then undergoes severing and adhesion both by fusion. Next the clamping device 24 is moved to a shrink position D and the two lateral sides of the object 1 are covered by using hot air. Subsequently the clamping device 24 is raised to an erect position and the object is released from the clamp at a discharge device E.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a packaging device for an annular article, which can be wrapped with a wrapping film on the outer peripheral surface and both side surfaces of an article in which an electric wire, a hose, a steel plate, etc. are annularly wound.

[0002]

2. Description of the Related Art Conventionally, an article in which an electric wire, a hose, a steel plate or the like is wound in an annular shape has its outer peripheral surface and both side surfaces covered with wrapping paper,
It is packaged by fixing the wrapping paper with an adhesive tape. Since these articles have large diameters, there is no device for automatically performing a series of packaging operations involving holding and moving of the articles, and for this reason, the present situation is that artificial packaging operations are performed.

[0003]

However, since the above-mentioned packaging work is performed artificially, there is a drawback that the work efficiency is poor and the production cost is high. Moreover, since the packaging with the wrapping paper is bulky, there is a possibility that the packaging appearance may be deteriorated.

The present invention has been made in view of the above-mentioned problems of the prior art, and is capable of automatically packaging an annular article having a large diameter to improve the working efficiency and reduce the production cost. , To improve the packaging format.

[0005]

The technical means that the present invention has taken to solve the above-mentioned problems is to insert the article 1 into the hollow portion 3 of the annular article 1 to be supplied and to release the article 1 freely. A clamp device 24 having a clamp body 30 that can be expanded and contracted for holding, a moving means for moving the clamp device 24, and a heat-shrinkable packaging film 47 on the outer peripheral surface 1a of the article 1 held by the clamp device 24. For covering, the packaging means 40 comprising a heater device 50 for adhering the packaging film 47 and a heating device 57 for heating the packaging film 47b for coating the article 1.
And the heating device 57 discharges the shrink-wrapped article 1 of the packaging film 47b.

The moving means comprises an index table 9, and the clamping device 24 has a receiving position B for receiving the article 1, a wrapping position C where the wrapping means 40 is located, and a shrinkage where the heating device 57 is located. Position D,
It is provided so that it can be stopped at a discharge position E where the article 1 is discharged onto the discharge conveyor 64.

Further, the clamp body 30 of the clamp device 24
Is supported by a support body 26 which is swingable in a laterally laid posture and an upright posture in the radial direction of the index table 9, and
The wrapping film 47 has an elongated shape and is provided with a feeding means for slackening the wrapping film 47 downward, and the clamp device 24 is laid down sideways to swing the article 1 to position the article 1 in the slackened portion of the wrapping film 47. This is because the packaging film 47 is fused and welded by the heater device 50 provided above the article 1, and the winding means 48 for winding the fused packaging film 47 by a predetermined length is provided.

The clamp body 30 of the clamp device 24
Is rotatably provided around the support body 26, and the packaging film 47b covering the article 1 is shrunk by the heating device 57 while the article 1 is rotated while the clamp device 24 is tilted sideways and rocked in the posture. Is preferred.

[0009]

DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described below with reference to the drawings. 1 to 4, reference numeral 1 is an annular article having a hollow portion 3 in the center thereof, and this article 1 is, for example, a metal filament body such as an electric wire wound in a coil shape. A conveyor device 4 conveys the article 1 to the rotary device 5. Reference numeral 7 denotes an extruding body for feeding each article 1 to the rotary device 5 across the upper side of the supply conveyor 4, which is provided by a work pushing cylinder 6 so as to be able to move in and out in the width direction of the supply conveyor 4.
The position at which the article 1 is extruded by the extruded body 7 is referred to as an extruded position A.

The rotary device 5 is, as shown in FIG.
The intermittent rotation index device 8 is provided on the 11 side in the vertical direction and has a support shaft 10 that rotatably supports the index table 9 and a gear 13 that meshes with a gear 12 provided at the lower end of the support shaft 10. ing. The index device 8 includes an electric motor 15, and the operation of the electric motor 15 allows the index table 9 to be intermittently rotated and stopped every 90 °.

Reference numeral 17 denotes a holding device for holding the article 1 in a releasable manner, which is provided at four positions in the circumferential direction of the index table 9. A main body 18 of each holding device 17 is fixed to the index table 9, and an elevating body 19 is slidably inserted in the main body 18 in the vertical direction. A mounting portion 20 is provided at the lower end of the lifting body 19, and as shown in FIG.
A rod 22a of an ascending / descending cylinder 22 is pivotally connected to 20 so that the ascending / descending body 19 can slide up and down, and the ascending / descending cylinder 22 is pivotally connected to the main body 18.

A clamp device 24 is provided in the holding device 17, and is provided at the tip of the elevating body 19. In order to allow the clamp device 24 to swing in the radial direction of the index table 9, the base portion of the support body 26 is pivotally supported by the elevating body 19 by the pin 25, and the connecting portion 28 formed on the base portion has a support body body.
A rocking cylinder 29 for rocking 26 is pivotally connected. The rod 29a of the swing cylinder 29 is pivotally connected to the mounting portion 20 of the elevating body 19. Therefore, the clamp device 24 has a sideways posture in which the support body 26 is horizontal,
The support body 26 is swingable in an upright posture in which it is upright.

Reference numeral 27 denotes a rotating body which is rotatably fitted on the support body 26, and has a rotating disc 31 fixed to one end and a rotary cylinder 32 fixed to the other end. Reference numeral 30 denotes a plurality of clamp bodies to be inserted into the inner peripheral surface 1a of the article 1.
The base of the rotary cylinder 32 is as shown in FIG.
It is rotatably and rotatably connected to the main body 32a side via a pin 33.

One end of 35 is a pin in the middle of each clamp body 30.
The link is pivotally connected via 36, and the other end of the link 35 is pivotally connected via a pin 39 to a rotating portion 37 capable of rotating in the normal and reverse directions. Therefore, when the rotating portion 37 rotates in the forward direction, the link 35 expands the diameter of the clamp body 30 and the inner peripheral surface 1a of the article 1 can be clamped from the inside. Conversely, when the rotating part 37 rotates in the reverse direction, the link 35
The diameter of 30 can be reduced so as to be separated from the inner peripheral surface 1a of the article 1.

Each clamp body 30 has a claw portion 30a in the lengthwise direction (axial direction) of the article 1, and the tip of this claw portion 30 causes the article 1 to drop downward at the upright position of the clamp device 24. In order to prevent this, a folded-back portion 30b that engages with an inner peripheral corner portion of the lower portion of the article 1 is formed. A position where the article 1 is supplied to the clamp device 24 is called a receiving position B. Also,
Reference numeral 34 denotes a pair of mounting members for mounting the article 1 at the receiving position B, which are provided on the side of the supply conveyor 4 so as to project.

Reference numeral 40 denotes a wrapping means for covering the article 1 held by the clamp device 24, which is from the receiving position B to 90.
It is provided at the packaging position C on the side of the rotated index table 9. As shown in FIG. 5, the packaging means 40 is provided with a pair of feed rollers 43 that are rotationally driven by a servo motor 41 and a pair of moving rollers 45 attached to the tip of a rod 44a of a roller cylinder 44. At the retracted position, the distance between the feed roller 43 and the moving roller 45 is
The diameter is set larger than the outer diameter of the article 1 so that the article 1 can pass through, and the feed roller 43 and the movement roller 45 are close to each other at the advance position of the movement roller 45.

Reference numeral 47 is a wrapping film on which an original fabric 47a is supported so that it can be drawn out freely. It is sandwiched between the feed roller 43 and the moving roller 45 via a dancer roller 46 which can be swung to give tension to the wrapping film 47. The tip end side is wound up by the scrap winding 48 which is rotationally driven.

Reference numeral 50 denotes a heater device provided below the feed roller 43 and the moving roller 45. A heater portion 52 provided on a rod 51a of a heater cylinder 51 is provided on the feed roller 43 side, and a heater portion 52 is provided on the moving roller 45 side. Is provided with a heater pad 55 provided on the rod 54a of the putt cylinder 54.
Therefore, when the heater part 52 and the heater pad 55 are retracted, a space for passing the article 1 is secured between them, and when the heater part 52 and the heater pad 55 are advanced, the both heater parts 52 and the heater pad 55 melt and cut the packaging film 47 at the center. It can be welded.

Reference numeral 57 denotes a preheater as a heating device for preliminarily heating and shrinking the packaging film 47, which is an index table 9 rotated by 90 ° from the packaging position C.
It is provided at the side shrink position D. The preheater 57 blows out hot air from the lower side of the article 1 held by the clamp device 24 in the sideways posture, and is the rotating disc.
31 is a drive roller 59 that is rotationally driven by a motor (not shown)
The article 1 can be rotated by engaging with the drive roller 59 and rotating the drive roller 59.

A discharge position E is provided at a position rotated by 90 ° from the shrink position D, and a swingable discharge lever 61 is provided at the discharge position E, and the discharge lever 61 extends along a guide body 62. And supplies the article 1 to the carry-out conveyor 64.
Reference numeral 65 denotes a pair of mounting members for mounting the article 1 at the discharge position E, which is provided so as to project to the side of the carry-out conveyor 64.
Reference numeral 65 is a shrink tunnel for finishing the pre-shrinked article 1.

The present embodiment has the above configuration.
Next, an example of its use will be described. First, when the article 1 is conveyed to the extrusion position A by the conveyor device 4, the work pushing cylinder 6 moves the extrusion body 7, so that the article 1 is pushed out to the rotary device 5 side and placed on the placing member 34. Placed.

When the article 1 is supplied to the receiving position B,
As shown in FIG. 3A, the lifting cylinder 22 is a rod 22.
In order to retract a, the elevating body 19 slides upward to raise the clamp device 24. Clamping device 24 Clamping body 30
Is in a reduced diameter state and is inserted into the hollow portion 3 of the article 1.

Further, the rotary cylinder 32 has a rotating portion 37.
In order to rotate the
Is expanded and pressed against the inner peripheral surface 1a of the article 1 to clamp the article 1 (see FIG. 4A).

When the clamp body 30 clamps the article 1,
Index table 9 rotates 90 ° and clamp device 24
Moves to the packaging position C. On the other hand, roller cylinder
When the moving roller 45 is retracted by 44, the packaging film 47 is fed out (see FIGS. 5A and 5B).

Further, the feed roller 43 is driven by the servo motor 41.
Rotates and sends out the packaging film 47, and the packaging film 47
The portion between the feeding roller 43 and the moving roller 45 is loosened (see FIG. 6A). In this way, when the packaging film 47 is loosened, the swinging cylinder 29 swings the supporting body 26 sideways and swings to the posture, and the lifting cylinder 22 lowers the clamp device 24 to a predetermined height. Is covered by the slack portion 47c of the wrapping film 47, and then the servo motor 41 is reversed to wrap the wrapping film 47.
Is brought into close contact with the peripheral surface of the article 1 (see FIG. 2B).

Further, the heater cylinders 51 and 54 advance the heater portion 52 and the heater pad 55 to melt and weld the packaging film 47 at the upper center of the article 1 (see FIG. 7A). After that, when both the heater parts 52 and the heater pads 55 retract, the packaging film 47b covers the entire peripheral surface 1b of the article 1.

The article 1 coated with the packaging film 47b is
Shrink position D with the clamp device 24 in the horizontal position
Move up to. At this position, the drive roller 59 engages with the rotating disc 31, the article 1 is rotated through the rotating disc 31, and hot air is ejected from the preheater 57.
The whole packaging film 47b is heated quickly and uniformly,
Both end portions thereof are covered over both side surfaces 1c of the article 1.

When the packaging film 47b is pre-shrinked, the clamp device 24 swings to the upright posture and rises, and the article 1 is conveyed to the discharge position E and placed on the placing member 65. Since the rotary cylinder 32 reverses the rotating portion 37, after the diameter of the clamp body 30 is reduced, the clamp device
The clamp body 30 separates from the article 1 by the lowering of 24. Next, the discharge lever 61 supplies the article 1 to the carry-out conveyor 64 along the guide body 62, and the article 1 supplied into the shrink tunnel 65 is further reliably shrink-wrapped.

The work at each of the positions A to E is efficiently performed simultaneously, and the index table 9 rotates after the work at each position is completed. Further, after the packaging film 47 is fused and welded, the welding portion 63 is formed on the packaging film 47, but the scrap winding 48 winds the packaging film 47 for a predetermined length and moves the welding portion 63. In this way, the welded part 63
Next, when the heater portion 52 and the heater pad 55 melt and weld the packaging film 47, the previous welding portion 63 is wound on the side of the continuous packaging film 47. This is because the packaging film 47b does not remain on the side of the packaging film 47b to be covered and the packaging appearance can be improved.

8 and 9 show another embodiment of the present invention. That is, in this embodiment, the packaging means at the packaging position C is different from that described above, and the other members are the same. The packaging means is such that the putt cylinder 54 is connected to a frame body 67 having a vertical heater pad 55, and the heater cylinder 51 provided with the vertical heater portion 52 is located below the putt cylinder 54. The heater part 52 and the heater pad 55 are freely attached to and detached from each other.

The packaging film 47 is provided so as to be freely drawn out from a pair of original fabric rollers 47a supported on the vertical axis, and the article 1 held in the standing state in the clamp device 24 is moved from the supply position B to the packaging position C. In doing so, the article 1 feeds the packaging film 47, and then the heater part 52 and the heater pad 55 pull the packaging film 47 by hand and fuse it.

Further, when the article 1 reaches the shrink position D, the clamp device 24 is in a sideways posture, and the packaging film 47b covering the article 1 is pre-shrinked as described above.

The present invention is not limited to the above-described embodiment. For example, in the above-mentioned embodiment, the packaging film 47 is pre-shrinked at the shrink position and completely shrunk by the heater. The shrink position may be completely shrunk to the end. Further, in the above-mentioned embodiment, the film 47 is fused and adhered by the heater device, but it may be thermally adhered by the heater portion and the heater pad and cut by a separately provided cutting blade.

[0034]

As described above, according to the present invention, the clamp body inserted into the hollow portion of the article conveyed by the supply conveyor holds the article, and the clamp body holds and moves the article, A series of packaging operations such as a packaging film covering operation and a shrinking operation can be continuously and automatically performed, and the work efficiency can be improved. Moreover, since the articles are shrink-wrapped, there is an advantage that the packaging appearance can be improved.

Further, since the clamp device is provided on the index table which rotates intermittently, each work from the work of supplying the product to the clamp device to the work of discharging the product to the discharge conveyor can be simultaneously performed in each process, and further, the work efficiency can be improved. Can be improved.

Moreover, the clamp body of the clamp device is supported by a support body which can be swung in a sideways posture and an upright posture, and the article is positioned on the packaging film loosened downward, and the packaging film is moved by the heater device. Along with fusing and welding, by winding the welded packaging film for a predetermined length, the welded portion on the long packaging film side can be wound up. Only this remains, and there is an advantage that the welded portion becomes inconspicuous.

Further, by shrinking the packaging film covering the article while rotating the article with a heating device, the packaging film can be contracted quickly and the contracted state can be made uniform in the circumferential direction of the article. Especially, it is most suitable for the pre-shrink work which requires quickness.

Further, when the clamp body of the clamp device is supported by the support body which can be swung in the sideways posture and the upright posture, the covering work and the shrinking work can be performed in the sideways posture of the clamp device. Therefore, the packaging device and the heating device can be arranged on the side of the index table so as not to hinder the holding and moving of the clamp device.

[Brief description of drawings]

FIG. 1 is an overall plan view including partially cutaway showing a first embodiment of the present invention.

FIG. 2 is a sectional front view showing the same.

FIG. 3 is a sectional view showing the main part of the same, in which (a) is a sectional view in which the clamp device is in a receiving position, and (b) is a sectional view in which the clamp device is in a discharge position.

FIG. 4 is a plan view showing a clamp device, in which (a) is a plan view in which the clamp body is expanded in diameter, and (b) is a plan view in which the clamp body is contracted in diameter.

5A and 5B show an operating state of the packaging device, FIG. 5A is a schematic diagram showing a standby position before the packaging film is delivered, and FIG.

FIG. 6 shows an operating state of the packaging device, (a) is a schematic diagram in which the packaging film is slackened downward, and (b) is a schematic diagram in which an article is positioned on the packaging film.

FIG. 7 shows an operating state of the packaging device, (a) is a schematic view when the packaging film is fused and welded by a heater device, (b).
Is a schematic view showing a state after fusion welding.

FIG. 8 is an overall plan view including a partial cross section showing another embodiment of the present invention.

FIG. 9 is a sectional front view showing the entire structure.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Article, 1a ... Outer peripheral surface, 3 ... Hollow part, 4 ... Supply conveyor, 9 ... Index table, 24 ... Clamping device, 26
... Supporting body, 30 ... Clamping body, 40 ... Packaging means, 47, 47b
… Wrapping film, 48… Scrap winding (winding means), 50…
Heater device, 57 ... Pre-heater (heating device), 64 ... Discharge conveyor, B ... Receiving position, C ... Packaging position, D ...
Shrink position, E ... Ejection position

Claims (4)

[Claims] 1. A clamp having a clamp body (30) which is inserted into a hollow portion (3) of an annular article (1) to be supplied and which is expandable and contractible so as to releasably hold the article (1). A device (24), a moving means for moving the clamp device (24), and an outer peripheral surface (1a) of the article (1) held by the clamp device (24) are covered with a heat-shrinkable packaging film (47). In order to cover, the packaging means (40) provided with a heater device (50) for adhering the packaging film (47) and a heating device (5) for heating the packaging film (47b) for covering the article (1).
7) and the heating device (57) is provided with a packaging film (47).
A packing device for annular articles, characterized in that the shrinkable article (1) of b) is discharged. 2. The moving means comprises an index table (9) that rotates intermittently, and the clamping device (24) has a receiving position (B) for receiving the article (1) and a wrapping where the wrapping means (40) is located. A position (C), a shrink position (D) in which the heating device (57) is located, and an article (1)
The annular article packaging apparatus according to claim 1, which is provided so as to be stopped at an ejection position (E) for ejecting. 3. A clamp body (30) of the clamp device (24) is supported by a support body (26) which is swingable in a laterally lying posture and an upright posture in a radial outer direction of the index table (9), and The wrapping film (47) has a long shape and is provided with a feeding means for slackening the wrapping film (47) downward, and the clamp device (24) is laid sideways to swing the posture of the wrapping film (47). Goods on the bottom part (1)
And the heater (50) provided above the article (1) melts and welds the packaging film (47) and winds the welded packaging film (47) by a predetermined length. 48) The apparatus for packaging an annular article according to claim 2, further comprising: 4. A clamp body (30) of the clamp device (24) is rotatably provided around a support body (26), and the article (1) is swayed in a sideways posture. 4. The apparatus for packaging an annular article according to claim 3, wherein the packaging film (47b) covering the article (1) is shrunk by the heating device (57) while rotating the article (1).