JP2964077B2 - Roll packaging machine for rolled articles - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an apparatus suitable for wrapping a packaging material around a body of a roll-shaped article.

[0002]

2. Description of the Related Art Conventionally, body-wrapped packaging of a roll-shaped article (hereinafter simply referred to as a roll) has a cylindrical portion of a roll substantially all around.
It is carried out by surrounding a guide belt, rotating a roll, feeding a packaging material having a width slightly larger than the roll width into a surrounding opening of the guide belt, guiding the packaging material with the guide belt, and winding the body.

[0003] The roll thus wound around the body is then folded toward the center of the roll end face while crimping a marginal portion of the packaging material protruding from the roll end face, and a triangular protrusion formed between the two bends. End wrapping is performed by folding and converging a part toward a roll end face, and folding the end part into a hollow hole of a core.

[0004]

However, in the conventional body-wrapping packaging as described above, there is a disadvantage that the guide belt must be retracted in order to carry the roll to the body-wrapping position, so that the apparatus is complicated and large in size. In particular, the disadvantages were more pronounced when the diameter of the rolls was large and became a bottleneck in the construction of a series of automatic packaging lines.

[0005] In addition, there are various types of packaging materials used for packaging the rolls. In particular, if the packaging material is to be packaged using a flexible film of polyethylene or the like, it protrudes from the roll end surface as a form after the body winding packaging. The surplus portion hangs down from the end face, and it is difficult to smoothly apply the normal packaging means on the premise that the packaging material has appropriate rigidity.

Accordingly, the present applicant has filed Japanese Patent Application No. Hei 8-11039.
No. 6 proposes a roll-wrapping apparatus for rolls using a vacuum. However, in this method, the packing material has a limited force for holding the packaging material because the vacuum has a marginal portion of the packaging material. Adhesion failure may also occur when there is a sheet or a perforated sheet.

An object of the present invention is to further improve such a body-wrapping apparatus so as to perform reliable and smooth holding of the above-mentioned marginal portion of the packaging material so that the body-wrapping can be performed easily and smoothly.

[0008]

The roll-wrapping apparatus for roll-shaped articles according to the present invention, which meets the above-mentioned objects, is provided with a sheet-like material wound on a hollow cylindrical core and inserted into both ends of a roll.
And a chuck device for rotatably holding the roll , and the roll near the outer peripheral surface of the roll held at both ends.
A touch roller is provided in parallel, and a pressing device that presses the touch roller to the front end portion of the supplied unit packaging material so as to be able to advance and retreat is provided, and outside of each end face of the roll,
A pinching device for pinching and holding a packaging material extra portion protruding from each end face of each of the rolls is attached to the chuck device, and the pinching device is moved from the vicinity of the outer periphery of the roll to the inner peripheral side by a moving device.
And movable, by the inner peripheral side both motor and the scissors device in a position movable chuck device is characterized in that so as to rotate integrally. In this case, it is also possible to take the sagging of the packaging material in the roll axis direction by making the pinching device freely advance and retreat in the roll axis direction.

[0009]

In the apparatus of the present invention, first, the roll core is held by a chuck device, for example, on the outer peripheral surface side of the roll,
The margins on both sides of the unit packaging material supplied so as to hang down from above are sandwiched and held by the sandwiching device. Then, while moving the pinching device from the vicinity of the outer periphery of the roll to the inner peripheral side, and pressing the unit packaging material against the outer peripheral surface of the roll with a touch roller, the clamping device is rotated integrally with the roll. The roll is wrapped around the packaging material.
In addition, the end-wrapping of the packaging material is imparted with adhesive or the like, and the packaging material is fixed on the roll to complete the body-wrapping.

The pinch device is moved to the inner peripheral side of the roll because the packing material is brought into close contact with the roll and the touch roller or the like is not interfered with during the integral rotation. By more positively moving the roll in the radial direction according to the diameter of the roll by the moving device, it is possible to reliably hold the packaging material according to the size of the roll diameter.
It is to be noted that it is the same as in the conventional case that after the body winding packaging, the extra portions protruding from both end surfaces are folded and converged and folded into the hollow hole of the core.

[0011]

Embodiments of the present invention will be described below with reference to examples shown in the accompanying drawings.

FIG. 1 is a partial plan view showing a main part of a body-wrapping apparatus according to an embodiment of the present invention, FIG. 2 is a plan view showing a pinching apparatus of the apparatus, FIG. 3 is a front view thereof, and FIG. FIG. 5 is a plan view showing a body winding part of the apparatus.

[0013] This body-wrapping apparatus is opened and closed by a cylinder 1a and rotatably holds a roll R obtained by winding a sheet-like material around a winding core C, and supplies the roll R near the outer peripheral surface of the held roll R. And a pressing device 4 for pressing the touch roller 3 on the front end portion 2a of the unit packaging material 2 to be able to move forward and backward.

As shown in FIG. 4, a feed conveyor 5 for transporting the unit packaging material 2 toward the pressing position of the touch roller 3 is provided above the touch roller 3, and a package which is transported by the feed conveyor 5. An adhesive force applying device 6 for applying an adhesive force such as a hot melt adhesive to the end of the packaging material while the material 4 is being conveyed is provided.

On the other hand, as shown in FIG. 5, the body-wrap packaging device of the present invention comprises a pinching device 7 for pinching and holding, outside the both end surfaces of the roll R, a packing material margin 2b projecting in the width direction from each end surface of these rolls. Is formed. Then, as shown in FIG. 4, a moving device 8 for moving the pinching device 7 from the vicinity of the outer periphery of the roll R to the inner periphery of the roll R is formed (see FIG. 1 and the like), and as shown in FIG. The pinching device 7 and the chuck device 1 are integrally rotated by a motor M while being moved to the peripheral side.

The pinching device 7 comprises a scissor upper plate 10 and a scissor lower plate 11 which are pivotally connected by pins 9 as shown in FIG. Opens and closes the pinching operation. 1 and 2, the moving device 8 includes a four-contact link 13 for supporting the scissor plate 11 so as to be able to move in parallel, and a worm gear motor 14 for moving the link. Further, the pinching device 7 can be moved back and forth in the axial direction with respect to the roll R by another worm gear mechanism or a cylinder (not shown).
It is designed to take slack.

In the apparatus according to the embodiment of the present invention, the roll core C is first held by the chuck device 1 as shown in FIG. 5, and is supplied to the outer peripheral side of the roll R as shown in FIG. The marginal portions 2b on both sides of the unit packaging material 2 are sandwiched and held by the sandwiching device 7, respectively. Then, as shown in FIG. 6, the pinching device 7 is moved from the vicinity of the outer periphery of the roll R to the inner peripheral side as required, and the unit packaging material 2 is moved by the touch roller 3 as shown in FIG. While pressing
By rotating the pinching device 7 integrally with the roll R as shown in FIG. 8, the roll R is wrapped around the packaging material 2 as shown in FIGS. In addition, the adhesive force is previously applied to the end portion of the packaging material 2 by the adhesive force applying device 6,
The body roll packaging is completed by fastening on the roll R.

[0018]

As described above, the roll-wrapping apparatus for roll-shaped articles according to the present invention is provided with a pinching device for pinching and holding, outside the end faces of the chucked rolls, a marginal portion of the packaging material projecting from each end face of the rolls. Forming a moving device for moving the clamping device from the vicinity of the outer periphery of the roll to the inner peripheral side, and rotating the clamping device integrally with the chuck device at the position moved to the inner peripheral side. Since the packaging material margin hanging down from the end face of the roll is sandwiched by the sandwiching device, stronger and more secure holding is possible compared to the conventional vacuum, and even if the packaging material has irregularities or holes, As described above, the present invention has a remarkable effect that the packaging material is securely held without causing poor suction and the body-wrapping is smoothly performed. And by making the above-mentioned pinching device freely advance and retreat in the roll axis direction, it is possible to remove the slack of the packaging material and to perform smoother body packaging.

[Brief description of the drawings]

FIG. 1 is a partial plan view illustrating a main part of a body-wrap packaging device according to an embodiment of the present invention.

FIG. 2 is a plan view showing a sandwiching device of the device.

FIG. 3 is a front view of the same.

FIG. 4 is a schematic diagram of the entire apparatus.

FIG. 5 is a plan view showing a body winding part of the device.

FIG. 6 is a side view showing a first step of the apparatus.

FIG. 7 is a side view showing a second step of the apparatus.

FIG. 8 is a side view showing a third step of the apparatus.

FIG. 9 is a side view showing a fourth step of the apparatus.

FIG. 10 is a side view showing a fifth step of the apparatus.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Chuck device 1a Cylinder 2 Packing material 2a Tip part 2b Margin 3 Touch roller 4 Pressing device 5 Feed conveyor 6 Adhesive force giving device 7 Clamping device 8 Moving device 9 Pin 10 Scissor upper plate 11 Scissor lower plate 12 Air cylinder 13 Link 14 Worm gear motor R roll C core M motor

Claims (2)

(57) [Claims] [Claim 1 wherein said on hollow cylindrical winding core and the chuck device for rotatably holding the roll is inserted into both ends of the roll winding a sheet, in the vicinity of the outer peripheral surface of the roll at both ends are held roll And a pressing device that presses the touch roller forward and backward to the tip of the supplied unit packaging material, and the rolls are disposed outside each end face of the roll. A clamping device for clamping and holding a marginal portion of the packaging material protruding from each end face is provided in the chuck device.
Attached to be movable in the inner peripheral side from the vicinity of the outer periphery of the roll by the moving device ungated, and characterized in that so as to rotate integrally with the inner circumferential side both motor and the scissors device in a position movable chuck device Roll-wrapping device for rolled articles. 2. The apparatus according to claim 1, wherein the pinching device is movable back and forth in the axial direction of the roll.