JP2004168410A - Packaging device for coil - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an inexpensive packaging device for coil, which is compact, lightweight and easy to supply power, and for which does not slack in the process of winding a belt-like film such as of a synthetic resin onto a coiled state object and for which adjustment can be made in a winding tension. <P>SOLUTION: No drive mechanism is installed on a film supply means moving around the periphery of the coil state object, whereas a drive means is disposed outside so that it is contrived to make the packaging device compact, lightweight and to make it easy to supply power. Furthermore, a slackened film is wound up by engaging a wind-up roll and a resisting means and the tension of the film is adjusted by fitting a torque limiter onto a pinch-roll at the side where the film is delivered. <P>COPYRIGHT: (C)2004,JPO

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a packaging device for covering a product or the like with a film of a synthetic resin or the like in order to protect the product in a manufacturing factory or the like from rust or scratches. More specifically, a band-shaped film is continuously formed in the radial direction in the order of the inner diameter portion, the left side surface, the outer diameter portion, the right side surface, and the inner diameter portion of a coil-shaped object (hereinafter, referred to as a coil) rotating about a central axis. The present invention relates to a packaging device for winding the entire coil with a band-shaped film as a result of winding.
[0002]
[Prior art]
As a method of wrapping a coil with a film of a synthetic resin or the like, a method of slowly rotating the coil around a central axis and winding a band-shaped film around a radial cross section of the coil has been generally adopted. For this purpose, a frame having a guide groove around which the film supply means rotates around the radial section is provided. Conventionally, a driving mechanism such as a motor and a speed reducer for circulating is provided in the film supply means. Therefore, the outer shape of the film supply means is large, the weight is heavy, and the inertia is large, so that it is difficult to control the film supply means.
Further, since the film supply means rotates, it is difficult to supply electric power to the motor, so that a trolley or the like has to be used. For this reason, the external shape was large, the weight increased, the cost was high, and the risk of electric shock accidents was high.
When the film supply means rotates along the guide groove, the film is unwound and wound around the coil in a tensioned state. When the film supply means reaches a position where the guide groove is present, the coil and the film supply means Since the distance to the next step was longer than the distance at the time of the next advance, the film was loosened, resulting in poor winding.
[0003]
[Problems to be solved by the invention]
In view of such circumstances, the present invention provides a packaging method and a packaging apparatus in which the structure of the circulating film supply means is simple, small, lightweight, inexpensive, easy to supply power, and does not loosen the film in the process of winding the band-shaped film around the coil. The task is to provide.
[0004]
[Means for Solving the Problems]
In order to solve such a problem, the present invention does not mount a driving mechanism such as a motor and a speed reducer on the film supply means that moves, and instead installs the film supply means and the like on a part of the frame with a guide groove around which the film supply means moves. A driving means for circulating is separately provided, and a film supply means and a chained continuous body are engaged with the guide groove, and these are continuously circulated by a feed roll of the driving means. As a result, the structure of the film supply means is simplified, and a small, lightweight, inexpensive, and easily supplied power packaging device including related equipment has been realized. When the film supply means rotates along the guide groove, the film is loosened by attaching a rewind roll to the film supply means, and disposing a resistance means near the place where the film is loosened in the guide groove. Is rotated to rewind the film.
[0005]
DETAILED DESCRIPTION OF THE INVENTION
An apparatus for packaging a coil with a film is large and has problems such as loosening when winding the film, and there has been a demand for improvement from related industries. The present invention has solved the above problems in response to these demands by improving the mechanism such as removing the drive mechanism from the film supply means. Hereinafter, an example is shown and the present invention is explained in detail.
[0006]
【Example】
FIG. 1 is a front view of a coil packaging apparatus 1 of the present invention, and FIG. 2 is a side view. In FIG. 1, the packaging apparatus 1 includes a main frame 2, driving means 3, frames with guide grooves 4, 5, a film supply means 6, a chained articulated continuum 7, a film end pressing means 8, a control panel (not shown), and the like. Be composed.
From both sides (X direction) of the coil 10 conveyed to the packaging device 1 by a conveyor 9 or the like, frames 4 and 5 with guide grooves are centered by cylinders 11 and 12 along a rail 2a (FIG. 2) attached to the main frame 2. Then, integrated with the driving means 3 having the guide groove 3a on the lower side, elliptical guide grooves 3a, 4a, 5a are formed. The film supply means 6 and the chained articulated continuum 7 are caused to circulate along the guide grooves 3a, 4a, and 5a around the coil 10 by the driving means 3 separately provided, and the belt-like film 13 is coiled. Wrap around. The guide grooves 3a, 4a and 5a are provided on both sides of the film supply means 6 as shown in FIG.
[0007]
FIG. 3A shows the coil 10 before winding the film, and FIG. 3B shows the coil 10A after winding the film.
As shown in FIG. 4, both ends of the chain-shaped articulated continuum 7 sandwich the film supply means 6 in the guide grooves 3a, 4a, 5a formed around the radial section (XZ section) of the coil 10. In this state, the film supply means 6 and the articulated continuum 7 are guided by the guide grooves 3a by rotating the drive roll 3d driven by the motor 3b, the speed reducer 3c, and the like of the drive means 3 in the direction of the arrow. The belt-shaped film 13 is wound around the coil 10 by rotating along 4a and 5a. At this time, since the coil 10 is slowly rotated around the central axis of the coil 10 by the rotating means 14 (not shown), as shown in FIG. 3B, the entire coil 10 is eventually wound around the band-shaped film 13. Will be. The total length of the guide grooves 3a, 4a and 5a is substantially equal to the total length of the film supply means 6 and the articulated continuum 7.
[0008]
In FIG. 1, at the time when the winding of the strip film 13 is completed, the arm 15a of the film gripping means 15 (not shown in detail) comes out in the Y direction and grips the strip film 13. Next, a film end pressing means 8 (not shown in detail) is operated, and a pressing roller 8a attached thereto is turned horizontally by 90 degrees, and a cylinder 8b presses the cut end 13a of the strip-shaped film against the coil 10 by the cylinder 8b. Descend. At this time, since the adhesive is applied to the surface of the band-shaped film 13, the end portion 13a of the band-shaped film is adhered to the previously wound film 13, and the nichrome wire 8c attached to the film end holding means 8 at the final stage. And the strip film 13 is cut. At this time, the arm 15a stands by while holding the other end 13b of the band-shaped film 13 at the same position, and when the next winding starts and the film supply means 6 makes one round and comes to that position, the end of the band-shaped film 13 is reached. The part 13b is released and retreats. The pressing roller 8a is movable in the X direction by a cylinder 8c (not shown).
[0009]
5 is an explanatory front view of the film supply device 6, FIG. 6 is a plan view, FIG. 7 is a side view, and FIG. As shown in FIG. 5, the film 13 from which the coil-shaped belt-shaped film 13A set in the center is unwound is wound around the coil 10 from the pinch rolls 16 and 17 via the exit roll 18. Wheels 23, 24, 25 and 26, which are rotatable independently of the shafts 21a and 22a, are provided at both shaft ends of the shafts 21a and 22a of the rewind rolls 21 and 22 penetrating through the side plates 19 and 20. It is attached. The wheels 23, 24 and 25, 26 are rolled along the guide grooves 3a, 4a, 5a provided on both sides, respectively, so that the film supply means 6 makes the radial section of the coil 10 (XZ section). , And the band-shaped film 13 can be wound around the coil 10. Since the film supply device 6 of the present invention does not include a drive system such as a motor and a speed reducer, it is small, lightweight, has a small inertia, and can be easily controlled. Further, power supply is unnecessary, and the entire packaging device is small, inexpensive, and safe. It has the advantage that.
[0010]
FIG. 9 shows a view of the articulated continuum 7. Both ends of the shaft 7 c penetrating the links 7 a and 7 b on both sides of the chained articulated continuum 7, regardless of the shaft 7 c, similarly to the film supply means 6. A rotatable wheel 7d is additionally provided and circulates along the guide grooves 3a, 4a, 5a similarly to the film supply means 6.
[0011]
Adjustment of the tension of the film 13 when the band-shaped film 13 is wound around the coil 10 is performed by a torque limiter 16a incorporated in a pinch roll 16 as shown in FIG. Since a one-way clutch 16b that engages with the side plate 20 is attached to the side surface of the torque limiter 16a, the torque limiter 16a works effectively only when the film 13 is sent out. When the film 13 is rewound, the torque limiter 16a is The pinch roll 16 becomes rotatable without acting. The body 16d of the pinch roll 16 with the rubber 16c affixed to the outside is mounted on the shaft 16f via the bearing 16e, but is restricted by the torque limiter 16a. This allows the tension of the film 13 to be adjusted. The shaft 16f is fixed to the side plates 19 and 20 by a fixing plate 27. As shown in FIG. 5, the film 13 passes while being pinched between a rotatable pinch roller 17 and a pinch roll 16.
[0012]
As shown in FIG. 11, the band-shaped film 13 is wound around the rectangular cross section of the coil 10 inside the guide grooves 3a, 4a, 5a, which are almost elliptical, so that the distance between the coil 10 and the film supply means 6 is constant. Therefore, the dimension F is longer than the dimension G, and the belt-shaped film 13 is loosened during the winding in the counterclockwise direction, so that winding failure occurs. However, conventionally, no countermeasure has been taken against this winding failure.
[0013]
In the present invention, in order to prevent winding failure due to the loosening, a mechanism for automatically winding the belt-like film 13 when the loosening occurs is adopted. FIG. 12 shows a mechanism for automatically winding the belt-shaped film 13 when it becomes loose.
A resistance means 28 is disposed outside the guide grooves 3a, 4a, and 5a at locations where the film 13 is loosened in the course of winding, and tension is applied to the resistance belt 28b by the cylinder 28a when the film supply means 6 passes this position. By rotating the rewind rolls 21 and 22 (FIG. 5) of the film supply means 6, the loosened film 13 is rewound. The shaft portions 21a, 22a of the respective rewind rolls 21, 22 are integrated with the body portions 21b, 22b, and gears 29, 30 are fixed to the shaft portions 21a, 22a by keys 31, 32, respectively. The gears 29 and 30 are engaged with gears 36 fixed to a rewind reel 35 holding the coiled film 13A via idle gears 33 and 34, respectively. Therefore, when tension is applied to the resistance belt 28b, the gears 29, 30, 33, 34, and 36 rotate in the direction of the arrow as shown in FIG. 5 to rewind the loosened film 13. Thereby, a good winding state can be obtained. When no tension is applied to the resistance belt 28b, the rewind reel 35 rotates in a rotatable state in the direction in which the film 13 is pulled. At this time, the gears 29, 30, 33, 4, and 36 idle in the rotation direction opposite to the arrow shown in FIG.
[0014]
FIG. 13 shows a front view of the rewind reel 35, and a trunk 35c is rotatably disposed on a shaft 35a held by the side plates 19 and 20 via a bearing 35b. The coiled film 13A wound around the paper cylinder 37 is inserted into the body 35c and fixed with the nut 35d. The gear 36 is attached to the body 35c with a bolt 35e.
[0015]
【The invention's effect】
As described above, since the film supply means of the present invention does not include a motor, a speed reducer, and the like, the structure is simple, small, lightweight, easy to supply power, and safe. In addition, because of its small size and light weight, the inertia is small and the control is easy, and the whole device is small and inexpensive.
In the present invention, with respect to defective packaging caused by loosening of the film that occurs when the film is wound, in the present invention, a rewind roller is provided in the film supply means, and a resistance means is engaged with the roller to rewind the loosened film to prevent defective packaging. are doing. As described above, the present invention is a useful invention in which various problems that have occurred in the conventional apparatus have been solved with a very novel idea.
[Brief description of the drawings]
FIG. 1 is a front view of a coil packaging apparatus of the present invention. FIG. 2 is a side view of FIG. 1. FIG. 3 (1) Coiled object before packaging. (2) Coiled object after packaging. FIG. 5 is a diagram showing the relationship between the driving means and the guide grooves. FIG. 5 is an explanatory front view of the film supply means.
FIG. 5 is a plan view of FIG. 7;
FIG. 5 is a side view of FIG. 8 FIG. 8 is a view of a film supply means FIG. 9 is a view of a chained articulated continuum FIG. 10 is an explanatory view of a torque limiter FIG. FIG. 13 is an explanatory view of a film loosening prevention mechanism. FIG. 13 is a front view of a rewind reel.
DESCRIPTION OF SYMBOLS 1 Packaging device 3a Guide groove 2 Main frame 3b Motor 2a Rail 3c Reduction gear 3 Drive means 3d Drive roll 4 Moving frame 16c Rubber 4a Guide groove 16d Axis 5 Moving frame 16e Bearing 5a Guide groove 16f Axis 6 Film supply means 17 Pinch roll 7 Articulated continuum 18 Outgoing roll 7a Link 19 Side plate 7b Link 20 Side plate 7c Shaft 21 Rewind roll 7d Wheel 21a Shaft 8 Film end pressing means 21b Body 8a Pressing roller 22 Rewind roll 8b Cylinder 22a Shaft 8c Cylinder 22b Body 8d Nichrome wire 23 Wheel 9 Conveyor 24 Wheel 10 Coiled object before packing 25 Wheel 10A Coiled object after packing 26 Wheel 11 Cylinder 27 Stopper plate 12 Cylinder 28 Resistance means 13 Film 8a Air cylinder 13a Film end 28b Resistance belt 13b Film end 29 Gear 14 Rotating means 30 Gear 15 Film gripping means 31 Key 15a Arm 32 Key 16 Pinch roll 33 Gear 16a Torque limiter 34 Gear 16b One-way clutch 35 Rewind reel 35a Shaft 35b Bearing 35c Body 35d Nut 35e Bolt 36 Gear 37 Paper cylinder

Claims (6)

In a packaging apparatus for winding a band-shaped film around a coil-shaped object, there is provided a film supply means rotatable along a guide groove formed so as to surround a radial section (XZ section) of the coil-shaped object. A packaging method, characterized in that the joint continuum is circulated along the guide groove by driving means separately provided in a part of the guide groove. In a packaging apparatus for winding a band-shaped film around a coil-shaped object, the film supply means circulating along a guide groove formed so as to surround a radial cross section (XZ cross section) of the coil-shaped object, and the articulated section A packaging apparatus comprising: a continuum; and a drive unit separately provided in a part of the guide groove for rotating the film supply means and the knotted continuum. 3. The packaging apparatus according to claim 2, wherein the guide groove is configured such that a portion excluding the driving means is divided into two parts and is movable in an axial direction (X direction) of the coiled object. The packaging method according to claim 1, wherein the drive roll of the drive unit is rotated to move the film supply unit and the articulated continuum along the guide groove. The packaging method according to claim 4, wherein the belt-like film is rewound by rotating a rewinding roll of the film supply means by a resistance means disposed at a required position near the guide groove. The packaging device according to claim 3, wherein a torque limiter and a one-way clutch are provided on a pinch roll of the film supply unit.

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