JPS6020188B2 - Automatic paper envelope sealing device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an automatic paper envelope sealing device that automatically folds and attaches folded rhombuses on paper envelopes and seals the paper envelopes. It is something.

That is, in the present invention, paper envelopes having a hot-glue adhesive layer formed on the back surface of a folding lid are fed one by one by a feeding conveyor and sent between a pair of crease forming rollers. A part of the folded lid is pressed between the annular protrusion and the annular groove of the crease forming roller to form a crease there, and then the paper envelope with the crease formed therein is held between a pair of special feed belt conveyors. Transfer it with the straight line of the ruler green on one side,
By passing between this and the slanted one side green of the folding guide body which intersects three-dimensionally in the front and back and up and down, the folding cover is automatically folded according to the above folding rules, and then the folding cover is folded back. The paper envelope is automatically attached to the paper envelope body by applying pressure and heating using a heating roller.

In the following, the invention will be explained in detail with reference to the illustrated embodiments.

FIG. 1 shows a paper envelope to be sealed by the apparatus of the present invention shown in FIG.
A heat-fusible adhesive layer made of synthetic resin such as vinyl chloride or polyethylene is preliminarily applied to the back surface of .

In Figure 2, paper envelope A (not shown in the figure) is
They are stacked on the feeding belt conveyor 1 between the plates 2 on both sides with the back side facing up.

Note that the side plate 2 may be provided only on one side. When the feeding belt conveyor 1 is driven, only one of the stacked paper envelopes A that has passed through the lower side of the feeding restriction plate 3 is pushed to the pinch roller 4.
The sheet is fed between a pair of crease forming rollers 5 and 6 which are vertically opposed to each other under the pressure and rotational force of the sheet.

The upper and lower creasing rollers 5.6 are located on the upper side, as can be seen in FIG.

The roller 5 has a V-shaped sharp annular protrusion 5, while the lower roller 6 has a V-shaped annular groove 6. The annular protrusion 5 and the annular cage 6 are engaged with each other. Incidentally, feed auxiliary rollers 9, 10 are provided on the respective shafts 7, 8 of these upper and lower crease forming rollers 5, 6.

Therefore, as described above, the paper envelope A is folded by the crease forming roller 5.
, 6, the folded lid A. By feeding the base between the annular protrusion 5 and the annular groove 6, a crease (FIG. 4) is formed over the entire length of the base.

The paper envelope A fed with creases formed in this manner is continuously fed between the crease forming rollers 5 and 6 and between the upper and lower special feed belt conveyors 11 and 12, where it is pinched from above and below. While being transported straight, it passes between the folding guide 13 and the ruler 14, which are arranged vertically opposite each other.

Note that a guide plate 15 is disposed below the belt of the lower narrow special feed belt conveyor 12 to regulate its twisting, and the belt slides on this guide plate 15. The folding guide 13 and the ruler 14 are both made of captain's plates, and the latter has a rectangular plane with both side edges 14 and 142 being parallel straight lines, and one end 143 on the crease forming rollers 5 and 6 side. While the former is slightly curved upward, the width of the former is not uniform; one end 13 on the crease forming rollers 5 and 6 side is narrower than the other end 132 on the opposite side, and furthermore, the width is narrower than the other end 132 on the opposite side. The width of the portion 133 gradually increases from the one end 13 toward the pond end 132, and the one end 13 is slightly curved downward.

Therefore, one end 13 of the folded guide body 13 is connected to the ruler 1
4, but from the middle of the middle part 133 it becomes higher than the ruler 14, and the pond end part 132 faces above the ruler 14 with a slight distance therebetween.
One side green 134 of folding guide 13 and minus side green 1 of ruler 14
4, intersect three-dimensionally in the front, back, top and bottom.

Note that the folded guide body 13 has an inclined intermediate portion 1.
A rising protrusion 135 is formed along one side of 33.
Therefore, as described above, the paper envelope A that is being transferred while being held between the upper and lower special feed belt conveyors 11 and 12 has one end 143 of the ruler 14 and one end 13 of the folding guide 13 that are vertically misaligned. , and the folded lid A moves over one end portion 13, and as it is transferred, the folded lid A passes over one of the inclined side edges 134 of the folded guide body 13.
It is gradually bent at the previously formed crease A2 while contacting the folding guide body 13 (see FIG. 5), and
32 and the ruler 14 in a completely folded state. Although not shown, a belt conveyor, a regulating plate, or the like is arranged below the ruler 14 in order to prevent the paper envelope A passing under it from being manipulated downward. It is something. In this way, fold the lid A
, the folded paper envelope A is transferred to the special feed belt conveyor 1.
A folded rhombus A is fed between the heating roller 16 and the feed loaf 17 which are vertically opposed from 1 and 12, and is folded back.
, are pressed and heated from above by a heating roller 16.

The heating roller 16 has a built-in electric heater, and current is supplied to it using, for example, a slip ring and a sliding brush. In this way, since the heat-fusible adhesive layer is previously formed on the back surface of the folded lid A, the adhesive is thermally fused by the pressure and heat applied by the heating roller 16, and the folded lid A is
．． is firmly and neatly attached to the back side of the main body of paper envelope A. The paper envelope A sealed in this way is sent onto the belt conveyor 18, and transported by this to the storage box 19.
It is something that is put inside.

In addition, crease formation.

The rollers 5 and 6 may be coaxial with the pinch roller 4 or the pulley 20 of the feed belt conveyor 1 facing it, or may be coaxial with the pulleys 21 and 22 of the pinch roller conveyor 11 and 12. In this case, the configuration can be made simpler than in the above case. As described above, the automatic sealing device of the present invention feeds paper envelopes with a heat-adhesive adhesive layer formed on the hair side of the folded lid one by one using a feeding conveyor to form a pair of folds. The folded paper envelope is fed between the rollers, and a part of the folded lid is pressed between the annular protrusion and the annular groove of the pair of crease forming rollers to form a crease there. By feeding the folding cover between the ruler and the folding guide using a special feed belt conveyor, the folding cover is automatically folded according to the above folding rules, and then the folding cover is
Since the paper envelopes are automatically affixed to the paper envelope body by applying pressure and heating using a heating roller, paper envelopes can be automatically sealed one after another.

In addition, while the paper envelope with the folds formed therein is being held between a pair of special feed belt conveyors, one side edge of the straight line of the ruler and the slope of the folding guide body that three-dimensionally intersects with this in the front and back and up and down directions. Since the folded cover is passed between the paper envelope and the paper envelope and then folded back along the fold line, the folded cover can be folded back smoothly and neatly. can be worn.

[Brief explanation of the drawing]

Figure 1 is a back view of a paper envelope, Figures 2 to 5 show an embodiment of the apparatus of the present invention, Figure 2 is a side view, and Figure 3 is an enlarged front view showing the relationship between a pair of crease forming rollers. 4 is a plan view, and FIG. 5 is an enlarged sectional view taken along line 1-1 in FIG. 4. A... Folding lid, A... Paper envelope, 1... Feeding belt conveyor, 5... Annular protrusion, 6,...・．．
Annular register, 5, 6... Crease forming roller, 11,
12...Pinch special feed belt conveyor, 14...
・Ruler, 13... Folding guide, 14. ...
...One side edge of the ruler, 134...One side edge of the folded guide, 16...Heating roller. 1 style 2 oka 3 poems homme 5 illustrations

Claims (1)

[Claims] 1 A feeding belt conveyor that feeds paper envelopes with a heat-fusible adhesive layer formed on the back side of the folding lid one by one, an annular protrusion on one side and an annular groove that engages with this on the other side, and the above-mentioned A pair of crease forming rollers that press a part of the folded lid of a paper envelope fed by a feeding belt conveyor between an annular protrusion and an annular groove to form a crease there; and a paper envelope with the crease formed therein. a pair of pinch conveyor belt conveyors that transport the paper envelopes while sandwiching them; a ruler that regulates the inside part of the paper envelopes from the fold line with a straight edge; and In order to fold the folding lid along with the ruler at the crease, a folding guide body in which one slanted edge intersects an example edge of the ruler in front and back and up and down, and the folded folding lid are heat-sealed as described above. 1. A paper envelope sealing device comprising: a heating roller that presses and heats the paper envelope to adhere it to the paper envelope main body using an adhesive layer.