JP3086030B2 - Packaging equipment with film - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a packaging apparatus for spirally winding a thin resin film having a certain degree of adhesiveness and extensibility, such as Saran Wrap (trade name), around an object to be packaged. .

[0002]

2. Description of the Related Art Conventionally, long objects such as building materials are packaged in such a manner that an appropriate number of them are collected and a relatively wide film is spirally wound around the assembly and bundled. This facilitates handling such as transport and prevents damage during transport. Conventionally, various types of packaging methods or apparatuses for winding a resin film, for example, those disclosed in JP-B-57-13442 and JP-B-59-46845 have been developed, and automatic packaging is performed. However, there are problems as described below.

[0003]

A package wound by a conventional film wrapping device has its entire periphery (side surface) exposed by the film, making it easy to handle and avoiding scratches during handling. Although it is preferably prevented, there is a drawback that it is difficult to remove the wound film, and it takes time to remove the film. Further, if a blade is used for the removal, there is a concern that the packaged object may be damaged.

SUMMARY OF THE INVENTION It is an object of the present invention to solve the above-mentioned problems of the prior art, and therefore, a film which is packaged so that it can be easily and quickly removed without fear of damaging the packaged object. To provide a packaging device.

[0005]

SUMMARY OF THE INVENTION A film packaging apparatus according to the present invention includes a film winding device 10 having a film feeding unit 12 circulating along an annular passage 11 provided in a machine frame; A string bundle 6 and a string bundle which are provided on a machine frame at any side of the conveyor's conveying path and upstream of the winding device with respect to the conveying direction, the conveyor including a conveyor 5 for feeding the to-be-packaged articles. A guide roller 7 for guiding the string fed from the package to the surface of the packaged object, a string presser 8 for holding the string on the opposite side of the string bundle and moved by the string guide, and being moved by the string guide. And a string guide for guiding the string to a position related to the string cutter and the string presser while moving.

[0006]

In this packaging apparatus, the string 3 unreeled from the string bundle 6
The object to be packaged is sent so as to be fed out while being held against the string while the tip of the object is held by the string presser 8. Therefore, in the state where packaging is started by the film, the string is folded back at the end face of the object to be packaged and attached in a U-shape. And then a string 3 on the top or bottom
The packaged material is spirally wound with a film along with a single string attached along its length.
Therefore, when removing the film from the packaged object, the string may be lifted so as to grip the protruding end of the string and pull it away from the side of the packaged object. And easily removed.

[0007]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be described below with reference to the drawings. The packaging apparatus according to the present invention is characterized in that the film 2 is wound along with the string 3 along the longitudinal direction of the article 1 to be packaged. As shown in FIGS. It includes a machine frame 4 on which the wrapping device 10 is mounted, and a conveyor 5 for feeding the articles 1 to be packaged.
Pass through. A string bundle 6 for storing the strings and a guide roller 7 are attached to the machine frame 4 to attach the strings 3 along the upper surface of the articles 1 to be conveyed by the conveyor 5, and the guide rollers 7 are adapted to the dimensions of the articles 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.

As shown in FIG. 1, the string bundle 6 and the guide roller 7 are arranged upstream of the film winding device 10 in the transport direction A of the conveyor 5. Further, a string presser 8 is provided at a position below the string bundle 6 and slightly lower than the conveying surface of the conveyor 5, and a guide roller is provided above the conveyor 5.
A string cutter 9 is arranged near the la 7. The film winding device 10 is arranged on the side of the conveyor 5 in the traveling direction of the guide roller 7 and the string presser 8, at which position the conveyor 5 is separated as shown, and the film 2 is wound around the packaged object 1. It is configured as follows.

Upright rods 5a are provided at appropriate intervals on both sides of the conveyor 5 so as to guide the articles to be packaged on the conveyor. The guide row
The la 7 serves to guide the unwound cord 3 and press the upper surface of the packaged object together with the string, and therefore has a length capable of pressing the entire width dimension of the packaged object as shown in FIG. Is preferred.

As shown in FIGS. 1 to 3, a film winding device 10 supports an annular passage 11 provided in a vertical plane and a roll-wound film and circulates along the passage 11. The film feeding unit 12 is operated by a motor 14, and the cutter 13 is operated by a motor 15.

The conveyor 5 is installed so as to pass through the annular passage 11. Usually, a roller conveyor is used as the conveyor, and is driven by a motor 16. The film feeding unit 1 is moved along the annular passage 11.
A device for circulating the film 2 around an object by circulating the film 2 in a spiral shape is well known, and therefore, a description of such a portion is omitted. Another guide roller 17 is located downstream of the guide roller 7 with respect to the conveying direction of the conveyor 5.
It is provided at the same height as the upper and lower adjustable.

As shown in FIGS. 3 and 8, in this embodiment, the cord presser 8 is composed of a pair of members 8a which move forward and backward with respect to the conveyor 5. Each member 8a is advanced and retracted by an actuator 17 such as an air cylinder, and preferably a conveyor.
At the center of the width of (5), that is, on the conveyor axis,
To be clamped.

The string cutter 9 located above the conveyor 5 and near the string bundle 6 is, as shown in FIGS.
It is arranged in relation to the string guide 18 for guiding the string to the appropriate position. The string cutter 9 is configured to be vertically movable by an air cylinder 19 or the like, and the string guide 18 is preferably composed of a pair of members 18a placed on both sides of the string cutter 9 and is vertically moved together with the string cutter 9 by the air cylinder 19. Be moved. Further, a receiving member 20 is provided near the string presser 8, and as shown in FIG. 4 and FIG. 7, when the string cutter descends, the string is caught and cut between them.

In operation, as shown in FIG. 4, the end of the cord extending from the cord bundle 6 is fed by the conveyor 5 in the direction of arrow A while being held by the cord presser 8, and the When the leading end hits the string and pays out the string, and reaches the film winding device 10, the film feeding unit 12 is operated, and the string end is held until the packaged object 1 advances to some extent,
Accordingly, the string starts to be wound around the packaged object in a state where the string is folded at the end face of the packaged object and attached in a U-shape.

As shown in FIG. 2, when the object to be wrapped with the film is started, the string presser 8 releases the end of the string, so that when the object to be wrapped is fed by the conveyor 5, the string 3 is attached to the upper surface of the film. The film 2 is wound by circulation of the feeding unit 12, and the film is spirally wound as shown. When the package is wound around the film, the cutter 13 is operated by the motor 15 to cut the film 2.

As shown in FIG. 4, when the object to be packaged passes through the film winding device 10, the string guide 18 is lowered together with the string cutter 9 by the operation of the air cylinder 19. At this time, as shown in FIGS. 5 and 6, the string 3 hits the lower edge of the string guide 18 and is lowered together, and is guided to a predetermined position on the lower edge. When the string guide 18 reaches the descending end, as shown in FIGS. 7 and 8, the members 8a of the string presser 8 advance and hold a part of the string guided to a predetermined position of the string guide,
Immediately thereafter, the string cutter 9 abuts the receiving member 20 to cut the string. Next, the string cutter and the string guide are raised to 1
End the cycle. FIG. 11 shows a state in which the wrapping is completed with the film 2, and the string is folded back at one end and attached.

In the above-described embodiment, the cord presser 8 is constituted by a pair of members 8a which move forward and backward. However, it is possible to use another mechanism for holding the string, such as moving only one member forward or backward. Needless to say. Further, the cutting of the string is not limited to the method of operating the string cutter up and down to abut against the receiving member 20 as described above, and it goes without saying that another mechanism may be used.

As shown in FIGS. 9 and 10, in another embodiment of the present invention, the film winding unit 10 and the conveyor 5
Are arranged in the same manner, except that the string bundle 6, the guide roller 7, and the string guide 18 are arranged below the conveying surface of the conveyor 5, and the string presser 8 is arranged above the conveyor. In this case,
The string cutter 9 is located below the conveying surface of the conveyor 5 and rises together with the string guide 18 to abut an upper receiving member 20.

In this case as well, as shown in FIG. 10, the to-be-packaged object is sent while the string end extending from the string bundle 6 is held by the upper string presser 8, and the tip of the to-be-packaged object hits the string. The string is paid out, so that the string is folded back at the end face of the article to be packaged and the film 2 is similarly wound around the article to be attached in a U-shape, and when the winding is completed, the string is cut by the rise of the string guide 18 and The new string end is held by the string presser 8 and prepared for the next package. FIG. 12 shows a state in which the winding is completed in this manner. The string 3 is wound around the film 2 together with the article 1 to be packaged, and the string is attached in a U-shape at one end and protrudes from the film at the other end.

In still another embodiment, the object to be packaged is prevented from shifting laterally by the rod 5a.
The guide roller 7, the string cutter 9 and the string guide 18 can be provided on either the left or right side of the conveying path of the conveyor 5, and in that case, the string presser 8 is installed on the opposite side. In this case, the string is attached to the surface of the packaged object by applying a certain amount of tension to the string 3 to be drawn out,
Similarly, it can be packaged with a film in a state where a string is attached to the article to be packaged.

[0021]

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 and can be suitably packaged by a film. In addition, since the string is provided with one end bent in a U-shape and the other end protruding from the film, the wound film can be cut by pulling up the protruding string end. . Therefore, the removal of the film can be performed very easily and quickly.

[Brief description of the drawings]

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

FIG. 2 is a side view showing another operation stage of the device.

FIG. 3 is a sectional view taken along line BB of FIG. 4;

FIG. 4 is a side view showing still another operation stage of the device.

FIG. 5 shows a string guide and a string cutter as components of the apparatus.
FIG.

FIG. 6 is an end view of the portion shown in FIG. 5;

FIG. 7 is a side view illustrating a cord retainer and a receiving member which are components of the apparatus.

FIG. 8 is an end view of the portion shown in FIG. 7;

FIG. 9 is a side view illustrating an apparatus according to another aspect of the present invention.

FIG. 10 is a side view showing another operation stage of the device shown in FIG. 9;

FIG. 11 is a perspective view showing an example of an object packaged by the device according to the first embodiment of the present invention.

FIG. 12 is a perspective view showing an example of an object packaged by an apparatus according to another embodiment of the present invention.

[Description of Signs] 5 Conveyor 6 String bundle 7 Guide roller 8 String retainer 9 String cutter 10 Film winding device 11 Annular passage 12 Film feeding unit 18 String guide 20 Receiving member

──────────────────────────────────────────────────続 き Continued on the front page (58) Field surveyed (Int. Cl. ⁷ , DB name) B65B 11/00-11/08 B65B 61/18 B65B 9/00 B65D 75/58-75/70

Claims (3)

(57) [Claims] 1. A film winding device having a film feeding unit circulating along an annular passage provided in a machine frame, a conveyor for feeding an article to be packaged through the annular passage, and A guide roller that guides a string bundle installed upstream of the film winding device with respect to the transport direction and a string fed from the string bundle to a surface of the packaged object; A string clamp that holds the string moved by the string guide, a string cutter that cuts the string moved by the string guide, and a string cutter and a position related to the string clamp while moving the string. A film packaging device comprising a string guide for guiding a string. 2. The packaging apparatus according to claim 1, wherein the string bundle, the guide roller, the string guide, and the string cutter are located above a conveying path of the conveyor and the string presser. A film packaging device characterized by being located below a conveyor surface of the conveyor, wherein a string is lowered by the string guide. 3. The packaging apparatus according to claim 1, wherein the string bundle, the guide roller, the string guide, and the string cutter are below a conveying surface of the conveyor and the string presser. A film packaging apparatus characterized by being located above a conveying path of the conveyor, wherein a string is raised by the string guide.