JP3102739B2 - Sealing device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a sealing device for automatically closing envelopes which are automatically inserted into a stack of folded documents, bundles of documents, books and the like sent from a stocker one by one.

[0002]

2. Description of the Related Art In general, as an automatic enclosing device for envelopes, envelopes are taken out one by one from a stocker containing a large number of envelopes, and the envelopes are opened at predetermined positions by an envelope opening device so that the envelopes are filled in the envelopes. After being inserted into the opening, the opening of the envelope is automatically sealed by the sealing device.

[0003]

However, in a conventional automatic enclosing device for envelopes, after inserting the envelope into the envelope, the envelope is laid down, and the opening is moved to the envelope device with the opening directed substantially horizontally. After gluing to the flap of the envelope, the one that bends the flap and seals is generally used, but since the enclosing work is performed with the envelope laid down, the enclosure is not securely inserted into the envelope. In such a case, there is no means to securely store the enclosure in the envelope, and the enclosure will not be fully accommodated in the envelope, and the sealing operation will be performed in a protruding state, and the sealing will be secure. There was a problem that it might not be done.

[0004] It is an object of the present invention to provide a sealing device capable of securely enclosing an enclosed substance in an envelope even from a protruding state and sealing the enclosure securely.

[0005]

In order to achieve the above object, a sealing device according to the present invention comprises a pair of frames erected with a gap large enough to allow at least one envelope to pass therethrough, and a pair of frames arranged along a lower portion of the gap. A main belt conveyor having a transfer surface extending at least from one end to the other end of the gap as an upper surface, a device for applying an adhesive arranged in order along the transfer direction of the main belt conveyor, and a flap of an envelope. Device to bend and adhere to the envelope body, at least one of
In the frame, over the entire length of the frame above the main belt conveyor
Along with providing an auxiliary belt conveyor that extends across,
The length of one frame is made longer than that of the other
Form a stocker opening facing the stocker,
At the tip of the base plate, there is an inclined surface and it
The envelope is held vertically by carrying the glue, bending, and gluing work, that is, the opening and the flap are positioned upward. The envelope can be held and transported in a state where it has been moved, and even when the envelope is protruding, the envelope can be stably positioned below the envelope by its own weight, and the envelope can be securely inserted into the envelope. Stored in a sealed
Possibility of defects such as the projecting out of the envelope opening
The transfer of envelopes is ensured, and the transfer of envelopes is easy.
Transfer of envelopes from stocker to main belt conveyor
Can be made easier.

[0006]

DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the sealing device of the present invention will be described with reference to the drawings. The figure shows the schematic configuration of the sealing device,
The pair of frames F1 and F2 are erected with a gap S having a width at least equal to the thickness of the envelope E after the enclosure is inserted, and one frame F1 is formed longer than the other frame F2. The stocker opening FO is formed at one end of the gap S.

At the lower end of the gap S, there is provided a main belt conveyor 1 having a transport surface extending substantially in the horizontal direction. Above the main belt conveyor 1, auxiliary belt conveyors 2 and 3 face each other with the gap S interposed therebetween. Each is provided over the entire length of the frame body F1, F2, extends in the same direction as the main belt conveyor 1,
The transfer surface is provided in parallel with the side wall of the gap S.

The main belt conveyor 1 is driven by a driving roller 10 and is supported by a plurality of supporting rollers 11. The auxiliary belt conveyors 2 and 3 are driven by driving rollers 10, respectively.
The belts of the main belt conveyor 1 and the auxiliary belt conveyors 2 and 3 are driven by the support rollers 21 and 31 and are moved from the stocker opening FO side to the opposite end. That is, the transfer direction is a direction from the stocker opening FO side to the take-out port 8 provided at the opposite end.

With this configuration, the envelope E is held vertically.
That is, the envelope E can be held and transported with the opening and the flap EF positioned at the upper side, and the enclosure can be stably positioned downward in the envelope E by its own weight. Envelope is securely stored and the envelope is
There is no possibility that a defect such as protruding from the opening of the device will occur. Further, although the auxiliary belt conveyors 2 and 3 are not necessarily provided, the transfer of the envelope E is reliably performed by the auxiliary belt conveyors 2 and 3. In addition, the stocker opening
By providing the FO, the transfer of the envelope E can be facilitated.

A stocker 4 is provided facing the stocker opening FO, and the stocker 4 has a horizontal base 41 and a base 41.
And a holding member 42 provided on the opposite side to the stocker opening FO, and the front end of the base plate 41 is extended above the main belt conveyor 1 and has a slope having a predetermined inclination angle, or a frontward and downward direction. A stocker guide 40 having a curved inclined surface is provided. A pressing device 43 provided with a push rod 431 is provided on the rear end side of the base plate 41.

According to this configuration, the frontmost one of the plurality of envelopes E pressed against the main belt conveyor 1 on the base plate 41 rides on the stocker guide 40. In the FO, only one envelope E slides on the stocker guide 40 and moves on the main belt conveyor 1 smoothly. Since one frame F1 is formed longer than the other frame F2, the main belt conveyor 1
The envelope E moved upward is transported reliably, and the auxiliary belt conveyor 2 smoothly moves the envelope E in the direction of the take-out port 8.

Above the frame F2, a coating device 5 for applying an adhesive to the flap EF of the envelope E is installed so as to be vertically adjustable, and the envelope E is located downstream of the coating device 5 in the belt transport direction.
The guide plate 6 that bends the flap EF is installed so that the vertical position can be adjusted, and the pressing roller 72 is provided so that the vertical position can be adjusted downstream of the guide plate 6 in the belt transfer direction. Further, a pressing roller 71 is provided on the frame body F1 so as to be able to adjust the vertical position, facing the pressing roller 72 of the frame body F2.

With this configuration, an adhesive such as glue is applied to the flap EF of the envelope E transferred on the main belt conveyor 1 by the coating device 5 and the flap EF is gradually moved by the guide plate 6 so as to cover the envelope opening. Bending and pressing rollers 71, 72
As a result, the flap EF can be pressed against the envelope body and securely adhered to perform the sealing operation, and the vertical position can be adjusted, so that envelopes of various dimensions can be easily handled. By reducing the gap at the end of the guide plate 6, the pressing rollers 71 and 72 can be eliminated.

Next, a description will be given of the operation. A plurality of envelopes E into which the contents are inserted are arranged in the stocker 4 with the opening positioned upward, and the pressing device 43 is operated to operate the push rod 43.
1, the envelope E is placed on the main board 41 on the main belt conveyor 1.
The envelopes E are sent out one by one from the stocker guide 40 onto the main belt conveyor 1.

The envelope E sent out onto the main belt conveyor 1 is received by the frame F1, and is sent into the gap S between the frames F1 and F2 by driving the main belt conveyor 1 and the auxiliary belt conveyor 2. The gap S is taken out by the drive of the main belt conveyor 1 and the auxiliary belt conveyors 2 and 3 and is transported in the direction of the outlet 8.

The envelope E transported in the gap S on the main belt conveyor 1 is flapped by the coating device 5 in which the vertical position is adjusted according to the opening height of the envelope E transported in advance.
The adhesive is applied to the EF, and the flap EF of the envelope E is bent at the guide plate 6 whose vertical position has been adjusted according to the opening height of the envelope E, so that the opening of the envelope E is closed. The flap EF is pressed against the envelope E body by the pressing rollers 71 and 72 whose vertical position is adjusted according to the opening height, and the sealing operation is completed. Sealed envelope E
Are the main belt conveyor 1 and the auxiliary belt conveyors 2, 3
Is further transported in the gap S and taken out from the outlet 8.

[0017]

Since the present invention is configured as described above, it has the following effects. By transferring the envelope vertically, the envelope can be stably positioned below the envelope by its own weight, and the envelope is securely stored in the envelope even from the state where the envelope protrudes, There is no danger of defects such as the enclosure protruding from the opening of the envelope. Also, in at least one of the frames, an auxiliary belt conveyor extending over the entire length of the frame is provided above the main belt conveyor, so that the transfer of the envelope is reliably performed. In addition, the transfer of the envelope can be facilitated by forming one frame body to be longer than the other frame body and forming the stocker opening facing the stocker of the envelope. Furthermore, at the tip of the stocker platform, there is an inclined surface,
The provision of the stocker guide facing the main belt conveyor facilitates the transfer of envelopes from the stocker to the main belt conveyor.

[Brief description of the drawings]

FIG. 1 is a front view of a sealing device of the present invention.

FIG. 2 is a side view of the sealing device of the present invention.

FIG. 3 is a plan view of the sealing device of the present invention.

[Explanation of symbols]

E Envelope, F1, F2 frame, FO stocker opening, S
Gap 1 Main belt conveyor, 2, 3 Auxiliary belt conveyor,
4 Stocker 5 Coating device, 6 Guide plate, 71, 72 Press roller, 8 Take-out port

Claims (1)

(57) [Claims] 1. A pair of frame members erected with a gap that allows at least one envelope to pass therethrough, and a transfer surface installed along a lower portion of the gap and extending at least from one end to the other end of the gap. A main belt conveyor, a device for applying an adhesive arranged in order along the transfer direction of the main belt conveyor, and a device for bending an envelope flap and bonding the envelope flap to an envelope main body, and at least one frame body smell
Extend over the entire length of the frame above the main belt conveyor.
And an auxiliary belt conveyor
To make the envelope stocker longer than the other frame.
Form the opening of the stocker that faces, and the tip of the stocker platform
, A stocker with an inclined surface facing the main belt conveyor
A sealing device comprising a guide, a vertical envelope, a transfer with an opening facing upward, and gluing, bending, and bonding operations.