JPH0516930A - Packaging device by film - Google Patents

Abstract

PURPOSE:To perform removal of a wound film quickly and easily for a packaging device which packages by winding a thin resin film with adhesiveness and stretchability spirally around an article. CONSTITUTION:This packaging device by a film contains a film winding device 10 and a conveyor 5 for articles to be packaged, and at the same time is equipped with a roll of string 6 which is provided on the machine frame, a guide roller 7 which guides the string to the upper surface of a article to be packaged, a string cutter 8 to cut the string, a string holder 9 to hold the string end, and a receiving member 17, and the article is packaged by a film while adding the string on the upper surface of the article to be packaged. Removal of the film becomes possible easily by gripping and lifting the end part of the string.

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 spirally winding a thin resin film such as Saran Wrap (trademark) having a certain degree of tackiness and ductility around a packaged object. ..

[0002]

2. Description of the Related Art Conventionally, for example, a long product such as a building material is collected in an appropriate number and is wrapped around the assembly by spirally winding the above-mentioned film, so that the film is wrapped. This facilitates handling such as transportation, and prevents scratches during transportation. BACKGROUND ART Conventionally, various packaging methods or devices for winding a resin film have been developed, for example, those disclosed in Japanese Patent Publication No. 57-13442 and Japanese Patent Publication No. 59-46845, and are automatically packaged. However, there were the following problems.

[0003]

A package wrapped by a conventional film packaging device has its entire periphery (side surface) exposed by the film, which makes it convenient to handle and prevents damage during handling. Although it is suitable to prevent it, there is a drawback in that it is difficult to remove the wound film, and thus it takes time to remove it. Moreover, if a blade is used for the removal, there is a risk of damaging the object to be packaged.

An object of the present invention is to solve the above-mentioned problems of the prior art, and therefore, the film is packaged so that the film can be easily and quickly removed without fear of damaging the object to be packaged. Is to provide a packaging device.

[0005]

A film packaging apparatus according to the present invention includes a film winding device 10 having a film feeding unit 12 which circulates along an annular passage 11 provided in a machine frame, and the annular passage. A guide roller 7 that includes a conveyor 5 for feeding the object to be wrapped therethrough, and that guides the string bundle 6 installed in the machine frame and the string fed from the string bundle to the upper surface of the object to be packaged; A receiving member 17 installed on the traveling direction side of the film feeding unit.
And a cord cutter that cuts the cord in cooperation with the cord retainer 9 and the clamping member, which moves forward and backward in opposition to the receiving member to press the cord end.
It is characterized by including 8.

[0006]

In this packaging device, the string 3 fed out from the string bundle 6
The product to be packaged is fed so that the tip of the product is held between the string retainer 9 and the receiving member 17 and is fed out of the product. The product to be wrapped is spirally wound with a film with a string attached along its length. Therefore, when removing the film of the packaged object, the projecting end of the string may be grasped and the string may be lifted so as to be separated from the side surface of the packaged object. It is cut or offset with and easily removed.

[0007]

Embodiments of the present invention will now be described with reference to the drawings. The packaging apparatus according to the present invention is characterized in that the film 2 is wound around the article to be packaged 1 along with the string 3 and the packaging apparatus is provided with a film as shown in FIGS. 1 to 5. The machine frame 4 includes a machine frame 4 to which the wrapping device 10 is attached, and a conveyor 5 that feeds the article to be packaged 1.
Is supposed to pass through. A string bundle 6 for storing the strings and a guide roller 7 are attached to the machine frame 4 for attaching the string 3 along the upper surface of the article 1 conveyed by the conveyor 5, and the guide roller 7 is adjusted to the size of the article to be packaged. It is movably supported up and down by an air cylinder 7a or the like so that it can be adjusted correspondingly.

Further, the cord cutter 8 and the cord retainer 9 adjacent to the cord cutter 8 are attached to the machine frame 4 at a position separated from the cord bundle 6 by a certain distance in the convey direction of the conveyor indicated by the arrow A in FIG.
Is installed. The film winding device 10 is a guide roller 7.
And the string retainer 9, and in that position the conveyor 5 is separated as shown in FIGS. 1 and 2 so that the film 2 is also wound on the underside of the object 1.

Upright rods 5a are installed on both sides of the conveyor 5 at appropriate intervals so as to guide the articles to be packaged on the conveyor. In addition, the guide roller
The la 7 plays a role of guiding the unwound string 3 and pressing the upper surface of the packaged object together with the string. Therefore, as shown in FIG. 3, the la 7 has a length capable of pressing the entire width dimension of the packaged object. Preferably.

As shown in FIGS. 1, 3 and 5, the film winding device 10 has an annular passage 11 provided in a vertical plane.
For supporting the rolled film and for the passage 11
It is constituted by a film feeding unit 12 and a cutter 13 of the film 2 which circulate along the film feeding unit 12, and the film feeding unit 12 is driven by a motor 14
3 is operated by the motor 15.

The conveyor 5 is installed so as to pass through the annular passage 11. A roller conveyor is usually used as this conveyor, and is driven by the motor 16. The film feeding unit 1 is arranged along the annular passage 11.
A device for wrapping the film 2 around the object in a spiral shape by circulating 2 is well known, and therefore the description of that part is omitted.

Further, in this apparatus, a receiving member 17 is installed in relation to the cord retainer 9 at a position slightly below the conveying surface of the conveyor 5 directly below the cord retainer 9, and when the cord retainer 9 descends, a receiving member 17 is provided therebetween. It is configured to hold the string 3. String presser 9
The receiving member 17 is preferably provided at a position on the center line of the conveyor as shown in FIG. Further, preferably, as shown in FIG. 4, a projection 9a is provided on the lower surface of the cord retainer 9 and the concave groove 1 fitted on the projection is provided on the upper surface of the receiving member 17.
7a is formed so that the cord can be held appropriately. In addition, these ridges and concave grooves may be provided in reverse.

Further, as shown in FIGS. 1 and 4, a guide roller 19 for pressing an object to be packaged is installed on a supporting member 18 of a mounting plate 18a of the cord cutter 8, and the guide roller 19 is supported. It is configured to be movable up and down together with the member 18 by an operating device such as an air cylinder 20. An air cylinder 21 for operating the cord cutter 8 is installed on the support member 18, and the cord cutter 8 is lowered by the air cylinder 21 in a state where the cord is held by the cord retainer 9 so that the cord cutter 8 and the receiving member 17 are supported together. The string 3 can be cut by working. The cylinder 22 provided on the mounting plate 18a is a cord retainer 9
It is an air cylinder that plays the role of a cushion, which enables the string cutter 8 to descend relative to the string retainer 9.

In operation, the end of the cord extending from the cord case 6 passes through the guide roller 7 and is clamped between the cord retainer 9 and the receiving member 17 by the conveyor 5 in the direction of arrow A so that the object 1 to be packaged is moved. When fed, the tip of the object to be packaged 1 hits the string and unwinds the string, and when it reaches the film winding device 10, the film unwinding unit 12 operates to cover the object 1 with the string 3 attached. Start winding the film 2 on the package 1. When the object to be wrapped is started to be wound by the film, the air cutter 20 raises the cord cutter 8, the cord retainer 9, and the guide roller 19 together with the support member 18 as shown in FIGS. 5 and 7, and releases the cord end. Does not prevent passage of the article to be packaged 1. The to-be-packaged object 1 is sent by the conveyor 5, and at the same time, the film 2 is wound by the circulation of the film feeding unit 12 while attaching a string to the upper surface thereof.
It is spirally wound as shown in. When the object to be wrapped is wrapped with the film, the cutter 15 is operated by the motor 15 to cut the film.

As shown in FIG. 2, when the object to be packaged 1 has passed the position of the film winding device 10, the air cylinder 20 advances the cord retainer 9 with respect to the receiving member 17, that is, lowers the supporting member 18, As shown in FIG. 8, the cord retainer 9 and the receiving member 1
The string 3 is sandwiched between 7 and held. Then the air cylinder 2
The operation of 1 lowers the cutter 8 and cuts the cord as shown in FIG. Then, when the film 2 is started to be wound on the next object to be packaged 1, the support member 18 such as a cord cutter moves up,
Enter the next packaging cycle.

In the above-mentioned device, the air cylinder 22 is used to enable the lowering movement of the cord cutter 8 with respect to the cord retainer 9, but if desired, instead of the air cylinder, as shown in FIG. , Cord retainer 9 and mounting plate 18a
A spring 23 may be provided between and. Further, in the above embodiment, the cord retainer 9 and the cord cutter 8 are moved up and down with respect to the receiving member 17, but in some cases, the cord is pushed back and forth to press and release the cord and cut the cord. Good.

FIG. 6 exemplifies a case where a film 2 is spirally wound around a rectangular parallelepiped elongated object 1 by this wrapping device without a gap. Film 2 with book string 3 attached
Is wrapped around. Needless to say, the object to be packaged is not limited to the rectangular parallelepiped shape, and may have another shape. At least one end 3a or 3b of the string 3 attached to the article to be packaged projects from the film 2 at the end, and the projecting length is usually large enough to grip the end of the string.

[0018]

As described above, according to the packaging apparatus of the present invention, one string can be attached to the article to be packaged along the longitudinal direction of the article to be suitably packaged by the film. In such a package wrapped with a film with a string attached thereto, the wrapped film is cut or displaced so that it can be easily removed by lifting the end of the string. Therefore, the film can be removed quickly and extremely easily.

[Brief description of drawings]

FIG. 1 is a side view showing an example of a packaging device according to the present invention.

FIG. 2 is a side view showing a state of the apparatus in one operation stage.

FIG. 3 is an end view seen from the right side in FIG.

FIG. 4 is a perspective view of a main part of the apparatus.

5 is a view taken along the line BB in FIG.

FIG. 6 is a perspective view showing an example of an item packaged by the packaging device of the present invention.

FIG. 7 is a side view of a main part of the same device.

FIG. 8 is a side view showing one stroke of the main part of the apparatus.

FIG. 9 is a side view showing another stroke of the main part of the apparatus.

FIG. 10 is a side view of a main part showing another embodiment of the same device.

[Explanation of symbols]

 5 Conveyor 6 String bundle 7 Guide roller 8 String cutter 9 String retainer 10 Film winding device 11 Annular passage 12 Film feeding unit 17 Receiving member

Claims (1)

Claim: What is claimed is: 1. A film winding device having a film feeding unit, which circulates along an annular passage installed in a machine frame, and a package to be fed so as to penetrate the annular passage. A conveyor, a guide roller that guides the string bundle installed in the machine frame and the string that is unwound from the string bundle to the upper surface of the object to be packaged, and a receiver that is installed on the traveling direction side of the film payout unit. A film packaging apparatus comprising: a member, a cord retainer that moves toward and away from the receiving member to push the cord end, and a cord cutter that cooperates with the receiving member to cut the cord.