JP2517145Y2 - Envelope bag former - Google Patents

Description

[Detailed Description of the Invention] [Industrial application] The present invention relates to an envelope bag former, and more particularly to an envelope bag former for folding a vertical seal portion into an envelope.

[Prior Art] As a step of automatically wrapping various products or printed materials using a plastic packaging material such as polyethylene,
The conventional vertical seal portion is folded in a palm as shown in FIG. A former Fg for joint palm folding as shown in FIG. 12 and FIG. 12 is used for molding joint palm folding. Gasoline Folding Former Fg has screw holes 12 attached to the Gasoline Folding Bag Making Machine.
A former upper plate 1'for taking in the film, a former side plate 2'fixed to the upper upper plate 1'with screws 33 for determining the size of the bag made from the film, and both the left and right former side plates 2 '. ′ And a former bottom plate 3 ′, each of which is continuous with the back fin guide fin 7. A portion of the film Fl ₂ formed by folding with the former Fg while filling the enclosed material and passing through the backing guide fins 7 is conveyed and pressed by a heat roller or a heat bar (not shown) as indicated by an arrow P. Then, the film is adhered by being heated and heated to form a continuous folded palm film Fl ₂
Then, the front and rear parts are laterally sealed, that is, end-sealed and cut into pieces one by one.

[Problems to be Solved by the Invention] By the way, the vertical seal portion of such a folded film Fl ₂ rises from the film surface and is held down by the front and rear horizontal seal portions, but the printed matter, especially There is a drawback that it is not suitable as an envelope for storing communication messages.
In recent years, the demand for direct mail packaging has been increasing, and in particular, there has been a demand for the development of an envelope bag-making machine capable of high-speed packaging of standard mail and an envelope bag-making former suitable for this envelope bag-making machine. An envelope bag making machine has already been proposed by the applicant (Japanese Patent Application No. 2-137950).

[Object of the Invention] The present invention has been made in view of the above-mentioned conventional problems. The vertical seal portion is flat along the film surface, and an envelope suitable for packaging printed matter, particularly fixed-size mail, is filled with an object to be encapsulated. The present invention provides an envelope bag making former used in an envelope bag making machine that is also produced.

[Means for Solving the Problems] In order to achieve such an object, according to the envelope bag former of the present invention, at least one side of the film is coated with an adhesive and wound around a supply spool in a roll shape. Is an envelope bag former that is used in an envelope bag machine that forms a vertical seal by encapsulating an enclosed material in the envelope-folded film to form an envelope. A former upper plate that is attached to the upper side of the former, a former side plate that is fixed to the upper former plate and determines the dimensions of the envelope, and a former bottom plate that is folded from the former side plate to form an intersection and fold the film into an envelope. The former side of the former plate has a notch, the former side of the former plate has a notch, and the intersection of the former bottom plate has a step forming line.

[Embodiment of the Invention] An embodiment of the envelope bag former according to the present invention will be described in detail below with reference to the drawings.

As shown in FIG. 1, an envelope bag-making machine EM equipped with an envelope bag-making former F according to the present invention comprises a supply conveyor SC for supplying the inclusions 8 and a film Fl for packaging the inclusions 8. Supply spool SP that is supplied by winding
And an arm portion A for supporting the film Fl supplied from the supply spool SP and detecting the unwinding of the film Fl, an envelope bag former F for envelope-folding the film Fl and filling the enclosed material 8, and an envelope folder. A center sealer CS that vertically seals the film Fl ₁ (Fig. 2) that has been formed into a bag and filled with the enclosed material 8 and an end sealer ES that horizontally seals and cuts the vertically sealed film Fl _1. Discharge conveyor EC for discharging the film cut by sealing, supply conveyor SC, supply spool SP, arm part A, center sealer part
It consists of a CS, an end sealer section ES, and a control section CT that controls the discharge conveyor EC.

The envelope bag forming former F according to the present invention comprises, as shown in FIGS. 4 and 5, a former upper plate 1 having a screw hole 12 attached to an envelope bag making machine EM and for taking in a film Fl,
The former side plate 2 (Fig. 3), which determines the dimensions of the envelope E (Fig. 10) that is fixed to the upper plate 1 of the former by screws 33 and is made from the film Fl, is bent from both the left and right former side plates 2. And a former bottom plate 3 that forms a crossing portion CR and folds the film Fl in an envelope. Further, the exit side of the former upper plate 1 has notches 10 at both ends, and only the central portion including the screw hole 12 attached to the envelope bag making machine EM is left, and the former upper plate 11 (first Figure 4). The exit side of the former bottom plate 3 also has notches 30 at both ends, and a step forming line 4 (third part) that forms a step at the intersection CR of the former bottom plate 3
FIG. 5, FIG. 5). Even if the step forming line 4 is provided in parallel with the former side plate 2 (Fig. 5), as shown in Fig. 6, the former bottom plate 3 is located on the lower side of one of the left and right sides and the former bottom plate 3 of the other side. It is also suitable to be provided close to and parallel to the end line.

It is conventional to have an attachment escape 5 on the inlet side of the former top plate 1 (Fig. 3) and an inlet ET (the vertical broken line portion in Figs. 4 and 5) on the inlet side of the former bottom plate 3. Gassho folding former Fg (Figs. 13 and 12)
Common).

The shape of the notch 30 of the former bottom plate 3 is preferably triangular or substantially fan-shaped, and the entrance side cross-sectional shape of the attachment escape 5 is also preferably trapezoidal, rectangular, or semi-elliptical.

[Operation of the Invention] The operation of the envelope bag former F according to the present invention configured as described above will be described below.

As shown in FIG. 4, the exit side of the former upper plate 1 has rectangular notches 10 at both ends and only a central portion including a screw hole 12 is left, and as shown in FIG. ,
The exit side of the former bottom plate 3 also has triangular cutouts 30 at both ends, and only the central portion including the intersection CR is left, so that the envelope folded film is provided on the exit side of the former.
Fl ₁ is not restrained from both sides. On the other hand, as shown in FIG. 7, the exit side of the former top plate 1'is only slightly short, and as shown in FIG. 8, the exit side of the former bottom plate 3'is also notched at both ends. If ′ is extremely small and the crossing portion CR of the former bottom plate 3 largely covers the bottom surface, the envelope-folded film Fl ₁ is constrained from the top, bottom, left and right, and wrinkles easily occur. Further, as the initial work, it is necessary to insert one end of the film front end into the crossing portion CR at the time of passing the film, and the notch portion 10 and the notch portion 30 allow the fingers to move freely and the work can be performed smoothly.

As shown in FIG. 3, the intersection of the former bottom plate 3
A step forming line 4 (an inclined portion) for forming a step is provided on the CR and is continuous with the stepped bottom plate 31. Therefore, the distance between the bottom plate 3 of the former and the top plate 1 of the former is equal on both sides (Rr = Rl). On the other hand, as shown in FIG. 9, the heights of the left and right former side plates 2 are slightly shifted,
When a step is formed on the left and right former bottom plates, the distance (Rr ') between the lower former bottom plate 32 and the upper former plate 1'is larger than the distance (Rl') between the opposite former bottom plate 3 and the former upper plate 1 '( Rr ′> Rl ′). At the former inlet, which is a condition switching point where a single film Fl drawn from the arm portion A is formed into a tubular shape, the left-right difference at the bottom of the former F ₀ causes left-right differences in film tension and resistance. This causes the film to meander, which causes inconvenience in the stability of bag making. Further, the enclosed object 8 is bent in the direction of flow (arrow in FIG. 10), and as shown in the figure, a portion 8'which shifts from the formed envelope E to the adjacent envelope E is formed. I will get out. The step forming line 4 (FIG. 3) eliminates the left-right difference at the bottom of the former F, and is therefore suitable for ensuring the correct position of the enclosed object 8 in the envelope E formed.

An attachment escape 5 is provided on the entrance side of the former upper plate 1 (FIG. 3, FIG. 4, FIG. 5, FIG. 6). The inclusion 8 supplied by the supply conveyor SC is pushed from the rear by the attachment 6 and fed into the envelope folding film Fl ₁ as shown in FIG. 11 (a), but is attached to the former F ₁ . When there is no escape and there is a large amount of stacked inclusions 8, the attachment 6
There is a case where the enclosed component 80 shifts in the forward and backward directions from the attachment rising 60 'in the forward direction. Therefore, as shown in FIG. 11 (b), the attachment rising 60 is set to a height that does not shift in the forward and backward directions even when the maximum amount of the inclusions 8 is loaded on the envelope, thereby increasing the attachment rising. Therefore, the attachment escape 5 is provided on the entrance side of the former upper plate 1 so that the attachment rising 60 does not contact the former upper plate 1.

The inlet side of the former bottom plate 3 is an inlet ET (Figs. 4 and 5).
(A vertical broken line portion in the figure). This is a single film supplied from the supply spool SP as shown in FIG.
Fl is a shape suitable when it is taken into the inside of the former F and formed into a tubular shape while substantially surrounding the entrance side of the former upper plate 1.

As shown in FIG. 1, the film Fl passes through the arm portion A and is formed into a bag by envelope folding in the former F as described above. The inclusions 8 are introduced into the supply conveyor SC, aligned at regular intervals, guided to the former F, and inserted into the film Fl ₁ formed into a tunnel-like envelope-folded bag under constant conditions controlled by the control unit CT. At this time, the film
The pattern matching of Fl ₁ is performed by a sensor (not shown) attached to the arm portion A and a control portion CT that controls this, so that the enclosed object 8 is properly enclosed, and the end sealer portion is included.
Horizontally sealed and cut at ES, and automatically folded and envelope-wrapped from the discharge conveyor EC and discharged.

[Effects of the Invention] As is apparent from the above-described embodiments, the envelope bag former according to the present invention is configured such that an adhesive is applied to at least one side of the envelope former and a film wound in a roll shape on a supply spool is fed out to the envelope. An envelope bag former that is used in an envelope bag machine that folds and then encapsulates the enclosed material in the folded film to form a vertical seal and is used to make an envelope bag, and is attached to the envelope bag machine. It comprises a former upper plate for taking in the film, a former side plate fixed to the upper former plate to determine the size of the envelope, and a former bottom plate for folding the film to form an intersection by folding the former side plate to form an intersection. Since the exit side of the former top plate and the exit side of the former bottom plate both have cutout portions, no wrinkles are generated in the envelope to be formed, and the film threading operation is facilitated. Furthermore,
Since a step forming line is provided at the intersection of the former bottom plate, stable bag manufacturing is ensured. As described above, the envelope bag former according to the present invention makes it possible to form an envelope suitable for printed matter, particularly for fixed-size mail packaging, while the vertical seal portion is flat along the film surface while filling the enclosed object. is there.

[Brief description of drawings]

FIG. 1 is a diagram showing the construction of an envelope bag making machine to which the envelope bag former according to the present invention is applied, FIG. 2 is a perspective view showing the operation of the envelope bag former according to the present invention, and FIG. 3 is an envelope according to the present invention. FIG. 4 is a view showing the entrance side of the bag making former, FIG. 4 is a top view showing an embodiment of the envelope bag making former according to the present invention, FIG. 5 is a bottom view thereof, and FIG. 6 is a bottom view showing another embodiment. ,
FIG. 7 is a top view of an envelope bag former compared with an embodiment of the envelope bag former according to the present invention, FIG. 8 is a bottom view thereof, FIG. 9 is a view showing its inlet side, and FIG. FIG. 11 (a) and FIG. 11 (b) are explanatory views of the action of the attachment escape, FIG. 12 is a bottom view of a conventional folding and folding former, and FIG. FIG. 1,1 '…… Former top plate 10 …… Former top plate notch 11 …… Former top plate 12 …… Former screw hole 2 …… Former side plate 3,3 ′ …… Former bottom plate 30, 30 ′… … Former bottom plate notch 31 …… Former bottom plate with step 32 …… Lower former bottom plate 33 …… Screw 4 …… Step forming line 5 …… Attachment escape 6 …… Attachment 60, 60 ′ …… Attachment rise 7 …… Back Guide fins for tensioning 8 …… Encapsulation object 8 ′ …… Parts that slip into adjacent envelopes 80 …… Encapsulation object component A …… Arm part CR …… Intersection part CS …… Center sealer part CT …… Control part E …… Envelope EC …… Discharge conveyor EM …… Envelope bag making machine ES …… End sealer ET …… Inlet F, Fg, F ₁ …… Former Fl …… Film Fl ₁ …… Envelope folding film Fl ₂ …… Gassho Origami film G ... Dofin Rl ...... right end SP ...... supply spool SC ...... supply conveyor of the left Rr ...... envelope folding film of the envelope folded film

Claims (1)

(57) [Scope of utility model registration request] 1. A film (Fl) coated with an adhesive on at least one side and wound around a supply spool (SP) in a roll shape.
An envelope used in an envelope bag making machine (EM) for feeding out and folding an envelope, and enclosing an enclosed substance in the folded film (Fl) to form a vertical seal and making a bag in the envelope (E). A former top plate (1) which is a bag making former and is attached to the envelope bag making machine (EM) and takes in the film (Fl);
A former side plate (2, 2) fixed to the former upper plate (1) to determine the size of the envelope (E) and a former side plate (2, 2) are bent to form a crossing portion (CR). And a former bottom plate (3, 3) for folding the film (Fl) in an envelope. The former side of the former upper plate (1) has a cutout (10) and the former side of the former bottom plate (3). Has a notch (30), and the intersection (CR) of the former bottom plate (3, 3) is provided with a step forming line (4).