JPH05305923A - Method for opening the opening of angle floor bag with gusset - Google Patents

Abstract

PURPOSE:To positively open the opening portion by providing a pair of wedge plates whose width corresponds to that of a bag and whose bottom is isosceles triangular, by inserting them in the opening of the bag, formed in a rectangular parallelepiped shape, which is opened and folded up, and by enlarging the space between the wedge plates. CONSTITUTION:A plate width of wedge plates 2, 2 formed in a approximately home plate shaped, whose bottom is isosceles triangular, is formed so as to correspond to the width in the across direction of the angle floor bag W to attach them to movable brackets 1, 1. Faces of these wedge plates 2, 2 are supported so as to be opposed to each other. After an opening is once opened, the angle floor bag W is set under two wedge plates 2, 2 whose bottom is folded up by the restoration of the gusset. The wedge plates 2, 2 whose space are narrowed are inserted into the opening of the angle floor bag W. Then, the wedge plates 2, 2 are moved in a direction to enlarge the space between the wedge plates. The opening is rightly opened by extending it with the wedge plates 2, 2 until the bend of the gusset is eliminated.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for opening an opening of a gusseted square floor bag, and more particularly to a gusseted square floor bag manufactured in a flat folded state, which is a rectangular parallelepiped by an appropriate method. Open the bag into a shape, put it on a pallet, and move it to the position where the items to be packaged will be stored.The gusset will be folded when the gusset is restored during the transfer process. Regarding how to open.

[0002]

2. Description of the Related Art Conventionally, the only gusseted bag handled by a bag-filling and packaging machine is Doipack (trademark), and a gusseted square floor bag has never been handled. The doi pack has gussets on the lower sides of both sides, and has a larger storage capacity than the three-sided seal bag and the four-sided seal bag, and has a good packaging form. To open the opening of the doipack, the center of the opening edge of the front and rear surfaces of the doipack is sucked and transferred by a pair of vacuum pads, and both ends of the opening edge are gripped by a pair of chuck devices, while the pair of chuck devices are approached, The pair of vacuum pads were separated from each other, and the bag opening was opened in a roughly diamond shape. Then, prior to the filling of the object to be packaged, a pair of expanding plates are inserted into the bag opening to separate them from each other, and the bag front surface and the bag rear surface are reliably separated.

[0003]

[Problems to be Solved by the Invention] It is unsuitable to put manju in a doi pack and not suitable for packaging Japanese confectionery. Therefore, the present inventor opened a gusseted square floor bag (relatively short bag) formed in a flatly folded state into a rectangular parallelepiped shape by a required method and put Japanese sweets such as steamed bun, Create a packaging form that closes the opening flatly,
We decided to develop a bag filling and packing machine. However, when a gusseted square floor bag (relatively short bag) opened in a rectangular parallelepiped shape by the required method was placed on a pallet and transferred to a position for accommodating an object to be packaged, a gusseted square floor bag was found. Due to the bending restoration of the gusset, the opening of the bag was budded, and there was a problem that the object to be packaged could not be stored. Therefore, as shown in FIGS. 5 (a) and 5 (b), a pair of vacuum pads 10 and 10 are used to adsorb and open the upper front and rear surfaces of the square floor bag W with gussets.
As shown in (c), the gusset cannot be opened in a linearly extended state, so if you try to store a Japanese confectionery (object to be packaged) such as buns that is almost inscribed in the bag,
The gusset interfered and could not accommodate the packaged item. Therefore, this time, as shown in FIG. 5 (d), the pair of expansion plates 11 and 11 are inserted into the bag opening to separate them,
When the bag front and bag back are pulled apart,
As in the case of (c), the gusset could not be opened in a linearly extended state. By the way, in order to accommodate Japanese sweets such as buns that are almost inscribed in the bag, for example, the four corners of the bag opening must be pulled diagonally outward to open the gusset in a straight line. I found that I couldn't.

The present invention has been devised in view of the above-mentioned points, and the bag opening can be exactly expanded so as to coincide with the corner floor, and the manju of a size that can be inscribed almost completely in the bag. It is an object of the present invention to provide a method for opening an opening of a gusseted square floor bag that can accommodate items to be packaged such as.

[0005]

Means for Solving the Problems The first invention of the present application is, as a means for solving the above problems, an isosceles triangle whose lower portion is attached to a bracket facing surface of a pair of movable brackets 1 and 1 with a close spacing. A rectangular parallelepiped having two wedge plates 2 and 2 each having a wedge shape and having a plate width m that fits substantially inside the corresponding bag width n and placed on a box-shaped pallet 3 and moved to a lower position. After the bag is opened into a shape, the gusset is folded into the bag and the bag opening is budded. Is spaced so as to substantially coincide with the bag width orthogonal to the bag width n, and the pair of wedge plates 2 and 2 widen the bag open end so as to match the square floor of the bag. Open the opening of the square floor bag with gusset It is intended to provide the law.

As a means for solving the above-mentioned problems, the second invention of the present application has a total of four wedge plates 4 in parallel on the bracket facing surfaces of the pair of movable brackets 1 and 1 which are close to each other. , 4, 4, 4 are attached, and the two parallel wedge plates 4, 4 on each side are wedge-shaped with the lower outer edge inclined downward inward and outside the one wedge plate 4, 4. The distance p from the edge to the outer edge of the other wedge plate 4, 4 is set so as to fit substantially inside the corresponding bag width n, and these four wedge plates 4, 4, 4, 4 are Inside of the square floor bag W with gussets, which is placed on the box-shaped pallet 3 and is transferred to the lower position, and then opened into a rectangular parallelepiped shape. And then a pair of movable brackets 1 and 1 with the distance between the bracket facing surfaces A gusset, characterized in that the four wedge plates 2 and 2 widen the bag open end so as to match the square floor of the bag by separating the bag so as to substantially match the bag width orthogonal to the width n. It is intended to provide a method for opening the opening of a corner floor bag.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A first embodiment of a method for opening an opening of a gusseted square floor bag according to the first invention of the present application will be described with reference to FIG. In this embodiment, the wedge plates 2 and 2 having a substantially home base shape which can be spaced apart from each other are arranged so that the width m of the wedge plates 2 and 2 coincides with the width n of the corner floor bag W in the front-rear direction (in parallel with the gusset). It is inserted into the bag to open the bag opening. First, as shown in FIG. 1A, a square floor bag W with gussets is placed on a box-shaped pallet 3 and the transfer is stopped immediately below two wedge plates 2 and 2 with a close spacing. In this gusseted square floor bag W, a flatly folded bag is opened into a rectangular parallelepiped shape by an appropriate method, and then it is placed on the pallet 3 (after a short time elapses). , The bag opening is in a state of bud due to the bending restoration of the gusset. Next, FIG.
As shown in (b), two wedge plates 2, which are closely spaced,
2 is lowered (it is sufficient to make it relatively close to each other, the wedge plates 2 and 2 may be stopped, and the pallet 3 may be raised), and the pallet is inserted into the gusseted square floor bag W. At this time, the two wedge plates 2 and 2 are
The pair of movable blocks 6 and 6 fitted to the horizontal guide 5 are attached to the opposing surfaces of the pair of movable brackets 1 and 1 that extend horizontally in a direction orthogonal to the horizontal guide 5 and hang down. In addition, since the lower part has a wedge shape of an isosceles triangle, the bag opening of the square floor bag W with gussets is budded at the initial stage of insertion (in FIG. The wedge plates 2 ', 2'are shown by dotted lines.)
However, the sharp lower ends of the wedge plates 2 and 2 surely enter the bag opening (the wedge plate 2 is inserted as shown by the dotted line in FIG. 1 (d)), and the wedge-like shape is formed as it is inserted. The edge 2a opens the bag opening. Since the wedge plates 2 and 2 are dimensioned so that the width m fits inside the corresponding bag width n, both side edges perpendicular to the width direction fit within the bag (Fig. 1 (d), the wedge plates 2 and 2 shown in solid lines are inserted. Subsequently, as shown in FIG. 1C, by separating the pair of movable blocks 6 fitted to the horizontal guide 5, the two wedge plates 2 and 2 are separated from each other with the center of the interval as a reference. The open end of the bag can be extended so that the bending of the gusset is completely eliminated and expanded so as to match the corner floor of the bag (in FIG. 1 (e), the opening of the bag W and the two wedge plates 2, 2 is shown by a solid line). Therefore, FIG.
As shown in (e), the four-jaw chuck 7 can accommodate the objects to be packaged that are fully accommodated in the square floor bag W so as to be inscribed in the square floor bag W in a plan view without interfering with the gusset. Since the pair of movable brackets 1 and 1 support the wedge plates 2 and 2 on the opposite surfaces, the positional relationship projected on the plane with respect to the bag opening comes to the outside of the bag and the packaged object is moved to the outside. It does not interfere with the toenail chuck 7. Although not shown,
After accommodating the objects to be packaged, the two wedge plates 2, 2
Is pulled out of the bag without approaching, then the gusset is bent to close the bag opening and seal the ceiling.

FIG. 2 shows a second embodiment of the method for opening the opening of the gusseted square floor bag according to the first invention of the present application. The gusset is oriented so that the gussets are oriented 90 degrees different from the case of FIG. It shows a case in which the square floor bag W with the inside is placed on the pallet 3 and transferred to a position directly below the two wedge plates 2 and 2. Since the two wedge plates 2 and 2 are inserted in parallel to the front and rear surfaces of the square floor bag W, if the wedge plates 2 and 2 are appropriately kept close to each other, the wedge plates 2 and 2 can be inserted into the bag more than in the first embodiment. Is also done smoothly. Figure 2
About (a)-(d), the same code | symbol as FIG.1 (a)-(e) is attached | subjected and description is abbreviate | omitted.

FIG. 3 shows a third embodiment of the method of opening the opening of the gusseted square floor bag according to the first invention of the present application. The difference from the first and second embodiments is that of the box shape. Pallet 8
The push-up plate 9 is pushed up through the projecting hole 8a provided at the bottom of the so that the corner floor bag W is raised and the upper wedge plates 2 and 2 are inserted into the bag. The two wedge plates 2 and 2 are separated from each other to widen the bag opening.

FIG. 4 shows an embodiment of a method for opening the opening of the gusseted square floor bag according to the second invention of the present application, in which the opening of the gusseted square floor bag W is opened by using the wedge plate 4. That is, as shown in FIG. 4 (a), the square floor bag W with gussets is placed on the box-shaped pallet 3 and directly below the two sets of wedge plates (4, 4), (4, 4) closely spaced. Stop transfer to position. As shown in FIG. 4B, the four wedge plates 4, 4, 4,
4 is inserted into the square floor bag W with gussets, and then the pair of movable brackets 1 and 1 are separated from each other to open the bag open end so as to match the square floor of the bag. Four wedge plates 4, 4,
4 and 4 are a pair of movable brackets 1 with a close spacing.
Two wedge plates 4 and 4 are attached in parallel to each other on the bracket-opposing surface of the first parallel plate. Each of the two parallel wedge plates 4 and 4 has a wedge shape in which a lower portion of an outer edge is inclined inward downward and one wedge plate 4 is provided. , 4 from the outer edge of the other wedge plate 4, 4 to the inner side of the corresponding bag width n, the insertion is similar to the embodiment of FIG. In the early days of
Even if the bag opening of the gusseted square floor bag W is budded, the sharp lower ends of the wedge plates 4 and 4 can surely enter the bag opening, and the wedge-shaped edge 4a is formed as it is inserted. Open the bag opening. When the opening ends of the bag are expanded by the four wedge plates 4 and 4, the movable brackets 1 and 1 are attached to the movable brackets 1 and 1 so that the movable brackets 1 and 1 can be adjusted to different sizes. This can be dealt with by adjusting the distance between the wedge plates and the wedge plates 4 and 4.
Other than that, it can be configured substantially in the same manner as the respective embodiments of FIGS. 1, 2 and 3.

[0011]

As described above, according to the method for opening the opening of the gusseted square floor bag of the present invention, the bag opening is exactly opened so as to match the square floor, and the rectangular parallelepiped shape is accurately formed. The bag can be opened, and the bag can be filled with an object to be packaged such as buns of a size that is almost inscribed.

[Brief description of drawings]

1 relates to a first embodiment of a method for opening an opening of a gusseted square floor bag of the first invention, (a), (b), (c) is a schematic perspective view showing the order of steps, and (d) is I in FIG. 1 (c)
d arrow view, (e) is the Ie-Ie figure in FIG.1 (c).

FIG. 2 relates to a second embodiment of a method for opening an opening of a gusseted square floor bag of the first invention, (a), (b) and (c) are schematic perspective views showing the order of steps, and (d) is II in Figure 2 (c)
d-IId figure.

FIG. 3 relates to a process drawing of a third embodiment of a method for opening an opening of a gusseted square floor bag of the first invention, (a) is a vertical cross-sectional front view showing a state before a wedge plate is inserted into the bag, (B) is a vertical cross-sectional front view showing a state where the wedge plate is inserted into the bag.

FIG. 4 relates to a process chart of an embodiment of a method for opening an opening of a gusseted square floor bag of the second invention, (a) is a vertical sectional front view showing a state before inserting a wedge plate into the bag, (b) ) Is a vertical sectional front view showing a state where the wedge plate is inserted into the bag.

[Explanation of symbols]

W ... Corner floor bag, m ... Wedge plate width, n ... Pouch width, p ... Distance from outer edge of wedge plate to outer edge of other wedge plate, 1 ... Movable bracket, 2 ... Wedge plate, 3 ... Box-shaped pallet, 4 ... Wedge plate,

─────────────────────────────────────────────────── ───

[Procedure amendment]

[Submission date] February 24, 1993

[Procedure Amendment 1]

[Document name to be amended] Statement

[Name of item to be corrected] Brief explanation of the drawing

[Correction content]

[Brief description of drawings]

1 relates to a first embodiment of a method for opening an opening of a gusseted square floor bag of the first invention, (a), (b), (c) is a schematic perspective view showing the order of steps, and (d) is I in FIG. 1 (c)
The arrow d view, (e) is the Ie-Ie figure in FIG.1 (c).

FIG. 2 relates to a second embodiment of a method for opening an opening of a gusseted square floor bag of the first invention, (a), (b) and (c) are schematic perspective views showing the order of steps, and (d) is I in FIG. 2 (c)
Id-IId figure.

FIG. 3 relates to a process drawing of a third embodiment of a method for opening an opening of a gusseted square floor bag of the first invention, (a) is a vertical cross-sectional front view showing a state before a wedge plate is inserted into the bag, (B) is a vertical cross-sectional front view showing a state where the wedge plate is inserted into the bag.

FIG. 4 relates to a process chart of an embodiment of a method for opening an opening of a gusseted square floor bag of the second invention, (a) is a vertical sectional front view showing a state before inserting a wedge plate into the bag, (b) ) Is a vertical sectional front view showing a state where the wedge plate is inserted into the bag.

5 (a), (b), and (c) are related to a conventional example, and are a perspective view and a plan view showing a front and rear upper surface of a square floor bag with gussets adsorbed by a pair of vacuum pads, (c). FIG. 6A is a plan view showing a state where the gusset-containing square floor bag is opened from the state of (b), and FIG.

[Explanation of Codes] W ・ ・ ・ Square floor bag, m ・ ・ ・ Width of wedge plate, n ・ ・ ・ bag width, p ・ ・ ・ Distance from outer edge of wedge plate to outer edge of other wedge plates , 1 ... Movable bracket, 2 ... Wedge plate, 3 ... Box-shaped pallet, 4 ... Wedge plate, ──────────────────── ───────────────────────────────────

[Procedure amendment]

[Submission date] May 28, 1993

[Procedure Amendment 1]

[Document name to be amended] Statement

[Name of item to be corrected] Brief explanation of the drawing

[Correction method] Added

[Correction content]

[Brief description of drawings]

1 relates to a first embodiment of a method for opening an opening of a gusseted square floor bag of the first invention, (a), (b), (c) is a schematic perspective view showing the order of steps, and (d) is I in FIG. 1 (c)
1D is a cross-sectional view taken along the line Ie-Ie of FIG.

FIG. 2 relates to a second embodiment of a method for opening an opening of a gusseted square floor bag of the first invention, (a), (b) and (c) are schematic perspective views showing the order of steps, and (d) is I in FIG. 2 (c)
Id-IId sectional drawing.

FIG. 3 relates to a process drawing of a third embodiment of a method for opening an opening of a gusseted square floor bag of the first invention, (a) is a vertical cross-sectional front view showing a state before a wedge plate is inserted into the bag, (B) is a vertical cross-sectional front view showing a state where the wedge plate is inserted into the bag.

FIG. 4 relates to a process chart of an embodiment of a method for opening an opening of a gusseted square floor bag of the second invention, (a) is a vertical sectional front view showing a state before inserting a wedge plate into the bag, (b) ) Is a vertical sectional front view showing a state where the wedge plate is inserted into the bag.

5 (a), (b), and (c) are related to a conventional example, and are a perspective view and a plan view showing a front and rear upper surface of a square floor bag with gussets adsorbed by a pair of vacuum pads, (c). FIG. 6A is a plan view showing a state where the gusset-containing square floor bag is opened from the state of (b), and FIG.

[Explanation of Codes] W ・ ・ ・ Square floor bag, m ・ ・ ・ Width of wedge plate, n ・ ・ ・ bag width, p ・ ・ ・ Distance from outer edge of wedge plate to outer edge of other wedge plates , 1 ... Movable bracket, 2 ... Wedge plate, 3 ... Box-shaped pallet, 4 ... Wedge plate,

Claims (2)

[Claims] 1. A pair of movable brackets, which are closely spaced from each other, have a lower part attached to the bracket-opposing surface, which has an isosceles triangular wedge shape, and whose width fits substantially inside the corresponding bag width. The wedge plate is placed on a box-shaped pallet and transferred to the lower position. After it is opened into a rectangular parallelepiped shape, the bag opening is budded due to the bending restoration of the gusset. Then, the pair of movable brackets are separated from each other such that the pair of movable brackets are separated from each other so that the distance between the bracket facing surfaces is substantially the same as the bag width orthogonal to the bag width. A method of opening an opening of a square floor bag with gusset, which is characterized by expanding so as to match the floor. 2. A pair of movable plates, which are closely spaced from each other, have two wedge plates mounted in parallel on the bracket-opposing faces, and two parallel wedge plates on each side have lower outer edges. It has a wedge shape that inclines downward inward, and the distance from the outer edge of one wedge plate to the outer edge of the other wedge plate fits almost completely inside the corresponding purse,
These four wedge plates were placed on a box-shaped pallet and transferred to the lower position, and then opened into a rectangular parallelepiped shape, and then the gusset was folded to restore the bag opening. Of the movable brackets and then the pair of movable brackets are spaced so that the distance between the bracket facing surfaces is substantially the same as the bag width orthogonal to the bag width. A method for opening an opening of a gusseted square-floor bag, which is characterized by expanding the bag so as to match the square floor of the bag.