JP3188488B2 - Packaging method using low density polyethylene film - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention uses a low-density polyethylene film in which a large number of porous cushioning materials used for packing electric appliances such as televisions, videos or refrigerators are stacked and then packed with a low-density polyethylene film. It relates to a packaging method.

[0002]

2. Description of the Related Art A predetermined number of porous cushioning materials formed by a foam molding machine are stacked and aligned by hand, then sent to a packaging machine, a polyethylene film is manually wound around, and the film edge is manually worked. They were packaged after being aligned and heat-sealed. However, the low-density polyethylene film is particularly thin and easily broken, and no technology has been developed that can automatically perform such packaging.

[0003]

The problem to be solved by the present invention is to provide a method for wrapping a porous cushioning material in a thin, easily tearable, and cumbersome low-density polyethylene film without the need for human intervention. That is.

[0004]

The present invention is directed to a conveyor.
A large number of porous cushioning materials sent continuously
Separate every block at the tip of the bear
A large number of air outlets
Transferred to the holding plate of the unloading device and sent to the welding zone.
Is continuously fed from the lumber feeder and distributed to the welding zone.
Film gripper at the bottom of the placed film winder
Air is blown from the air ejection holes to the low-density polyethylene film stretched up and down by the upper and lower movable film drawer bars to form a space for porous cushioning material insertion, Then the film drawer bar
Down and sandwich it between the film end grip bar.
Welded and unwelded opening side is welded and carried out
It is characterized in that the the.

[0005]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, the present invention will be described in detail with reference to the illustrated embodiments. 1 is a conveyor that continuously supplies a large number of porous cushioning materials W stacked in a multi-stage to the packaging process, 2 separates the porous buffering materials W continuously fed by the conveyor 1 into blocks, This is a separating device which is fed in the upper left direction in FIG. 1 by a cylinder (not shown).

Reference numeral 3 denotes a delivery device which receives the porous buffer material W separated and sent by the separation device 2 for each block and sends it out to the welding zone H. An air supply pipe 6 through which a number of air ejection holes 5 are provided is provided at an upper end edge and a side edge of the holding plate 4 for receiving the porous buffer material W of the delivery device 3. When the air is sent to the welding zone H, air is blown out from the air blowing holes 5 to form a space S into which the low-density polyethylene film F stretched up and down and into which the porous buffer material W is fitted.

Reference numeral 7 denotes a cylinder for moving the delivery device 3 toward and away from the welding zone H, and reference numeral 9 denotes a bottom plate for guiding the porous buffer material W to the welding zone H. Reference numeral 10 denotes a back plate whose height is changed by a cylinder 11 in accordance with an increase or decrease in the number of stacked articles to be packaged.
To prevent the porous cushioning material W from falling or falling even when the height of the porous cushioning material W changes.

Reference numeral 12 denotes a film supply device for supplying a low-density polyethylene film F to a packaging process. The direction is turned by 90 degrees by 14 and supplied to a film winding device described later. Reference numeral 15 denotes a guide roller for loosening the film.
By returning the guide roller 15, the film F which has been excessively pulled out is loosened by returning the guide roller 15, and the space S for inserting the porous buffer material W is formed by blowing the air from the air ejection hole 5. I have. Therefore, the sliding amount of the guide roller 15 is changed depending on the height of the porous buffer material W.

Reference numeral 16 denotes a film winding device for winding the low-density polyethylene film F around the porous cushioning material W stacked in multiple stages. The film winding device 16 includes a film end gripping bar 17 provided at a lower portion and a film winding device. And a film pull-out bar 18 which can be moved up and down freely. Reference numeral 19 denotes a vertically long welding device provided in the welding zone H.

[0010]

In order to carry out the present invention with such a device,
First, the porous cushioning materials W stacked in a multi-stage and continuously fed by the conveyor 1 are separated by the separating device 2 into ones.
Only the blocks are separated and sent to the sending device 3. When one block of the porous buffer material W sent into the delivery device 3 is delivered to the welding zone H, air is blown out from the air blowing holes 5 formed in the air supply pipe 6 of the delivery device 3. If the guide roller 15 is loosened at the same time as the blown air is blown, the low-density polyethylene film F stretched vertically between the film end gripping bar 17 and the film pull-out bar 18 of the film winding device 16 can be used as a porous cushioning material. A space for inserting W is formed by wind pressure.

The porous cushioning material W guided on the bottom plate 9 while being held by the delivery device 3 traveling toward this space advances without touching the low-density polyethylene film F and reaches the welding zone H. I do. Upon reaching the welding zone H, the delivery device 3 is retracted, and the porous buffer material W is placed on the welding zone H. After the placement, the feeding device 3 is retracted, and when the retraction is completed, the film pull-out bar 18 is lowered.
Low lowered after holding the density polyethylene film F
Density polyethylene film F of the film-end holding bar 17
And the edges of the film are welded and melted.

The semi-wrapped porous cushioning material W wound around the low-density polyethylene film F from above and below as described above.
In the welding zone H, the unwelded opening side surface is welded by the welding device in the welding zone H, and the package is completely packaged and carried out.

[0013]

As is apparent from the above description, the present invention forms a space for inserting a porous cushioning material by blowing air onto a low-density polyethylene film stretched up and down, The low-density polyethylene film, which is thin and easy to tear when the packaged product is wrapped, is not caught by the edge of the porous cushioning material, the edge of the delivery device, or the protrusion, and is not damaged. Occurrence can be prevented well, and the yield can be increased.
Therefore, the present invention brings about a great deal to the industry as a packaging method using a low-density polyethylene film.

[Brief description of the drawings]

FIG. 1 is a perspective view showing an embodiment of a packaging device used in the present invention.

FIG. 2 is a side view of the delivery device.

FIG. 3 is a side view of the delivery device, also shown in a different state.

[Description of Signs ] 1 Conveyor 2 Separation device 3 Sending device 4 Holding plate 5 Air ejection hole 6 Air supply pipe 16 Film wrapping device 17 Film end gripping bar 18 Film drawer bar F Low density polyethylene film H Welding zone S Space W Porous Cushioning material

Claims (1)

(57) [Claims] (1) A multi-unit system which is continuously sent by a conveyor.
Number of porous cushioning materials at the end of this conveyor
Separate from each other, and a large number of
Transfer to the holding plate of the delivery device where the air ejection holes are arranged
Feed into the welding zone and continuously from the film supply device
Film wrapping device sent out and placed in the welding zone
The film edge grip bar at the bottom of the unit and the upper
Air is blown from the air ejection hole to the low-density polyethylene film stretched up and down by the film drawer bar to form a space for fitting a porous cushioning material, and then
Lower the film drawer bar and move the
Non-welded opening that is sandwiched between the gripping bar and welded
A packaging method using a low-density polyethylene film, wherein a side surface is welded and carried out .