JPS6312991Y2 - - Google Patents

Description

[Detailed description of the invention] [Industrial field of application] This invention is a bag-making device that can automatically manufacture irregularly shaped bags with inner bag pasting, etc., which were previously manufactured by hand. It is related to.

[Prior art and its problems]

Conventionally, as shown in FIGS. 8 and 9, the side part B of the front folding paper A is formed into a bulging shape, and a cut E is provided in a part of the folding side D.
Irregularly shaped bags, such as New Year's gift bags for infants, in which a protrusion F is formed when the bag is folded, are popular with consumers because they can create a three-dimensional effect.

By the way, this type of irregularly shaped bag has bulges and protrusions and is manufactured exclusively by hand, which not only increases the cost but also causes uneven folds and uneven product size. It had the following problems.

Of course, in the case of normal rectangular bags such as square envelopes,
For example, the envelope material (base paper) supplied from the paper feeder
An apparatus for automatically manufacturing the above-mentioned paper bag through a side piece folding means, a gluing means, a bottom edge folding means and a top edge folding means is known (see Japanese Patent Publication No. 42-12566).
Due to structural problems, this type of device is unable to automatically manufacture the irregularly shaped bags described above.

[Means for solving problems]

Therefore, in this invention, the side folding device of a type of bag making device in which a paper feeding device, a side folding device, a gluing device, a bottom folding device, and an edge folding device are arranged in series is moved up and down at a predetermined timing. and a positioning plate that moves up and down in conjunction with the folding roller at a rear position of the folding roller, and the base paper is placed between the paper feed table and the forming plate located behind the positioning plate. A gap is provided for passage, and an inductor is provided on the forming plate with its tip extending forward of the forming plate, and on the other hand, one of the feeding rulers disposed on the bottom folding device and the edge folding device is provided. Alternatively, by providing notches in both predetermined positions for escaping the notches formed in the base paper, irregularly shaped bags can be automatically manufactured.

[Effect]

In the bag making device according to this invention, the glue margin of the base paper supplied from the paper feeding device is folded inward by the side piece folding device, and then the glue is applied to the back side of the glue margin by the gluing device. The front paper is folded up from the bottom using the bottom folding device to form a bag body, and finally the front flap paper is folded down to form an irregularly shaped bag.
In the side piece folding device, a crease roller and a positioning plate are interlocked to create creases only at predetermined locations along the length of the base paper. In relation to this, only the glue margin that has been creased is folded in, and this glue margin is reliably guided to the forming plate by the action of the inductor, and furthermore, only the necessary portion is folded in using the notch formed in the feed ruler. This is what I did.

〔Example〕

Next, as a preferred embodiment of the automatic bag making apparatus for irregularly shaped bags according to the present invention, a bag making apparatus for manufacturing irregularly shaped bags as shown in FIG. 9 by pasting the base paper inside as shown in FIG. 8 described above. will be explained in detail below using an example.

That is, the bag making device according to the present invention includes a paper feeding device 1
It is constructed by arranging in series a side folding device 2, a gluing device 3, a bottom folding device 4, and an edge folding device 5. The glue margin G of the supplied base paper a is folded inward from the side piece H by the side piece folding device 2, and then glue is applied to the back side of the glue margin by the gluing device 3, and then the bottom edge folding device 4, the front paper I is folded up from the bottom side J to form the bag body C, and finally, the front flap paper A is folded down from the mouth side D using the edge folding device 5 to complete the irregularly shaped bag. be. In FIG. 1, the devices 1 to 5 are connected via a paper feed roller 6.

The paper feeding device 1 is configured to supply one sheet of base paper a superimposed on the base paper base 7 to the shooter 8 at regular intervals by a suction feeder 9' that reciprocates between the base paper base 7 and the shooter 8. .

In the side piece folding device 2, reference numerals 9, 9 are folding rollers whose tops are formed at an acute angle, and are attached to the rotating shaft 10 at intervals corresponding to the side pieces H, H of the base paper a. Reference numeral 11 denotes a bell crank that swings around a fixed shaft 12. One arm 11a is connected to the rotating shaft 10, and the other arm 11b is connected to a cam 13 having a predetermined shape, and the rotation of the cam 13 is controlled by the bell crank 11. Accordingly, the rotary shaft 10 is lowered to a position where the top part 9a of the crease roller is inserted into the roller groove 15 formed in the paper feed table 14 for the time required for the side piece H of the base paper a to pass the crease roller 9, At other times, the rotation axis is raised such that the top portion 9a of the folding roller 9 is located above the upper surface of the paper feed table 14. 1
Reference numeral 6 denotes a positioning plate, which is set behind the folding roller 9 at a distance equal to the length L of the front sheet of the base paper. The positioning plate 16 is in contact with a cam 17 that rotates in synchronization with the cam 13 that moves up and down on the rotating shaft 10, and while the crease roller 9 is ascending, it stands up and holds the passing base paper. It stops, and at the same time as the crease roller descends, it falls down and moves the base paper again, so that the crease is formed in the correct position. Reference numeral 18 denotes a molded plate, and the molded plate 18 has an inner surface 19 whose slope α is formed at an acute angle with respect to the upper surface of the paper feed table 14 on the tip side, and gradually becomes more acute toward the rear. and is located on the outside of the fold made by the folding roller 9, with the inner surface 19 close to the fold side, and the paper feed table 14
and a gap sufficient for the base paper a to pass through. Reference numeral 20 denotes a paper press plate, which is made of a thin metal plate and formed into a rectangular shape.One side piece is placed close to the inner surface 19 of the molded plate, and is placed between the paper feed table 14 and the molded plate 18, as well as the molded plate 18. A gap sufficient for the base paper a to pass through is set between the two. Reference numeral 21 denotes an inductor made of a thin metal rod, the end of which is fixed to an arbitrary position on the upper surface of the forming plate 18, the tip of which is held out forward from the tip of the forming plate 18, and the inductor 21 is pushed by the folding roller 9. The glue allowance G of the base paper a whose tip has been slightly raised due to the pressure is scooped up and guided to the inner surface 19 of the forming plate. Molded plate 1
The glue G that has come into contact with the molded plate 8 is automatically folded along the inner surface 19 of the molded plate 18, passes through a folding roller 22 disposed at the rear of the molded plate 18, and completes the side piece folding process.

The gluing device 3 has a gluing plate 23 having a circumference equal to the required gluing width, and the gluing plate 23 is fixed to a gluing body 24 that rotates at a constant speed.
A fixed amount of glue is supplied from a glue wheel 26 immersed in a glue tray 25 via an intermediate wheel 27. Reference numeral 28 denotes a positioning plate, which is set behind the gluing plate 23 at an interval equal to the length L of the front paper of the base paper. The positioning plate 28 is a cam 2 that rotates in synchronization with the adhesive plate 23.
9, and as soon as the tip of the gluing plate is at the lowest position, it falls down and the base paper a is moved again by the action of the paper feed roller 6, and glue is applied to a predetermined position. .

The bottom folding device 4 includes a sickle 32 that swings about a fulcrum 31 above folding rulers 30 and 30' set opposite to each other, and a pair of folding rollers 33 and 33 below. The stopped base paper a is folded in half from the bottom side using a sickle 32 and sent between folding rollers 33, 33, and the front paper is adhered to the glue margin.

The edge folding device 5 is composed of folding rulers 35, 35', a sickle 36, folding rollers 37, 37, and a positioning plate 38, like the bottom edge folding device 4. Notches 39 and 39' are formed for escaping the inlets E and E,
When the mouth side D is folded in half by the sickle 36, the notch stands up and a protruding piece F is formed. The product with the opening piece D folded in as described above is conveyed to the product stand 40 by the paper feed roller, and the work is completed.

The above is an example in which the projecting piece F is formed on the edge of the base paper, but when forming it on the bottom side, the folding ruler 3 of the bottom side folding device 4 can be used instead of the above structure.
It is sufficient to form notches at predetermined locations on the folding rulers of the folding devices 4 and 5, and in the case of forming protrusions F on both the opening and the bottom, cutouts may be formed at predetermined locations on the folding rulers of both folding devices 4 and 5, respectively. .

In addition, although the above is an example in which the bag body C is constructed by adhesive, if it is applied to a bag body that does not require adhesive and is constructed only by a folding process, the gluing device 3 may be removed. implement.

Furthermore, although the above is an example of manufacturing a so-called inner bag-stitched bag, when manufacturing other types of bags such as layered or inner-stacked bags, folding rollers and forming plates may be used. It can be implemented by changing the positions of etc. as appropriate.

[Effect of idea]

In the automatic bag making device for irregularly shaped bags of the present invention, the crease roller is moved up and down as appropriate in conjunction with the positioning plate, so it is possible to crease only a predetermined part of the length of the base paper. Since the forming plate is set above the paper feed table with a gap that allows the base paper a to pass through, it is possible to fold only the glue margin creased by the crease roller and fold in the subsequent bulging part B. do not have. In this case, since the tip of the inductor is set in front of the forming plate, the glue G folded up by the crease roller can be reliably guided to the forming plate, and the folding ruler of the folding device can Since the notch is formed, the projecting piece F will not be folded in even if the sickle 36 is pressed against it, so manufacturing of irregularly shaped bags can be automated, and this has various advantages such as reducing manufacturing costs and providing beautiful products. However, its practical effects are extremely large.

[Brief explanation of drawings]

Fig. 1 is an overall configuration diagram showing a preferred embodiment of the automatic bag making device according to the present invention, Fig. 2 is a front view showing the configuration of the folding roller as seen from the front, and Fig. 3 is a plan view of the forming plate. , FIG. 4 is a sectional view taken along line A-A in FIG. 3, and FIG.
The figure is a sectional view taken along line B-B in Figure 3, Figure 6 is a front view showing how the side pieces of the base paper are folded in with the forming plate, Figure 7 is a plan view showing the structure of the folding ruler, and Figure 8 is the base paper. FIG. 9 is a plan view showing the shape of the product. 1: Paper feeding device, 2: Side folding device, 3: Gluing device, 4: Bottom folding device, 5: Edge folding device, 6: Paper feed roller, 7: Paper base, 8: Shooter, 9: Folder eye roller, 10: rotating shaft, 11:
Bell crank, 12: Fixed shaft, 13: Cam, 1
4: paper feed table, 15: roller groove, 16: positioning plate, 17: cam, 18: forming plate, 19: inner surface,
20: Paper press plate, 21: Inductor, 22: Folding roller, 23: Glue plate, 24: Mounting body, 25: Glue plate, 26: Glue wheel, 27: Intermediate wheel, 28: Positioning plate, 29: Cam , 30: Folding ruler, 31: Fulcrum,
32: Sickle, 33: Folding roller, 34: Positioning plate, 35: Folding ruler, 36: Sickle, 37: Folding roller, 38: Positioning plate, 39: Notch, 40: Product stand.

Claims (1)

[Scope of utility model registration request] In a lithographic bag making device that includes a paper feeding device, a side folding device, a gluing device, a bottom folding device, and an edge folding device arranged in series, the side folding device is a folding roller that moves up and down at a predetermined timing. and a positioning plate that moves up and down in conjunction with the folding roller at a rear position of the folding roller, and a gap through which the base paper passes between the paper feed table and the forming plate located behind the positioning plate. At the same time, an inductor is provided on the forming plate with its tip end extending in front of the forming plate, and on the other hand, a predetermined position of one or both of the feed rulers disposed on the bottom folding device and the edge folding device is provided. An automatic bag making device for irregularly shaped bags, characterized in that a notch is provided at a position for escaping the notch formed in the base paper.