JPS6218425B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a molding device for molding a cushioning material for packaging to prevent damage during transportation of radio equipment, etc., and in particular, the invention relates to a molding device for molding a cushioning material for packaging to prevent damage during transportation of radio equipment, etc., and in particular, the invention relates to a molding device for molding a cushioning material for packaging to prevent damage during transportation of radio equipment, etc. The present invention relates to the same device for molding.

In general, in wireless devices such as television receivers, the weight of the device is often biased toward the front or back. For example, in a television receiver, most of the cathode ray tubes and other electrical components are attached to the front, and the weight of the device is biased toward the front or back. Most of the parts are just the cabinet, and when packaging cushioning material is applied to the sides of the television receiver, that is, the left side and right side, it is important to note that the cushioning material is molded with the same foaming ratio. ,
The cushioning effect is different between the front and rear parts, and there is a risk of damage due to abnormal impact being applied to the fitting part between the front and rear parts.

The present invention has been made in view of the above drawbacks, and will be explained below with reference to the drawings. Fig. 1 is a cross-sectional view of the main part of the packaging cushioning material forming apparatus of the present invention, and Fig. 2 is a cross-sectional view of the main part of the packaging cushioning material forming apparatus of the present invention. A perspective view of a molded packaging cushioning material is shown.

Next, referring to FIG. 1, reference numerals 1 and 2 indicate hoppers each containing a foamed material, and a low foaming material (for example, 50 times) and a high foaming material (for example, 60 times) foam material are stored, respectively. Reference numeral 3 denotes a stationary mold, into which foamed material (primarily foamed raw material) is transferred from the hopper through filling ports 4 and 5.

6 and 7 are eject pins provided in the above mold,
After molding the packaging cushioning material, it serves to remove the cushioning material that is in close contact with the stationary mold. Reference numeral 8 indicates a mold on the moving side, reference numerals 9 and 10 indicate steam supply pipes, and broken lines indicate a state in which steam is being injected.

The forming operation by the packaging buffer forming apparatus shown in FIG. 1 will be explained.

First, the foamed material after primary foaming is placed in hoppers 1 and 2. Here, hopper 1 is filled with a low foaming material (for example, the expansion ratio is 50 times), and hopper 2 is filled with a high foaming material (for example, the expansion ratio is 60 times), and the above foaming materials are inserted from the filling ports 4 and 5, respectively. The configuration is as follows.

The filling ports 4 and 5 are both connected to the fixed mold 3 , and in the example shown in FIG. 1, a predetermined amount of low foaming material is transferred from above, and a predetermined amount of high foaming material is transferred from below.

Along with this, steam is sent from the steam supply pipes 9 and 10 in the direction of arrow A, and when heated, the foamed material becomes 2
Next, foaming is caused and molded into a predetermined shape. After the molding is completed, the movable mold 8 is moved to the right and separated from the fixed mold 3 , and the eject pins 6 and 7 are pressed in the direction of arrow B. For example, the packaging cushioning material 11 is taken out from the stationary mold 3 and assumes the shape shown in FIG.

The taken-out packaging cushioning material 11 is formed roughly in the upper part and densely in the lower part. In FIG. 2, the upper part of the shaded area is formed roughly, and the lower part is densely formed. If the lower part is placed in contact with a particularly vulnerable area, the vulnerable area will be protected.

As described above, according to the apparatus of the present invention, it is possible to form packaging cushioning material into dense parts and coarse parts with a simple apparatus, which can be used depending on the application, and the apparatus of the present invention is extremely useful as a molding machine for foam materials. be.

[Brief explanation of the drawing]

FIG. 1 is a sectional view of a main part of a packaging cushioning material molding machine of the present invention, and FIG. 2 is a perspective view of a cushioning material molded by the same apparatus. Explanation of main drawing numbers, 1, 2...Hopper, 3 ...
Fixed side mold, 4, 5...Filling port, 8 ...Moving side mold, 11...Cushioning material for packaging.

Claims (1)

[Claims] 1. A hopper that stores foam materials with large and small expansion ratios, a fixed mold that is connected to the hopper and is supplied with both of the foam materials, and a movable mold that can be moved to a position opposite to the fixed mold. The side mold and the fixed mold are provided with an eject pin that extrudes the cushioning material after foam molding the foamed material from the hopper, forming parts of high and low density in the cushioning material, and forming the desired shape. A packaging cushioning material molding device that can be adjusted to different strengths.