JPH10278906A - Equipment for holding mouth open of sheet-shaped bag body - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide equipment which automatically opens the mouth of a sheet-shaped bag body and keeps its mouth in an open condition, capable of easily inserting a vegetable, food or other products in the sheet-shaped bag body. SOLUTION: An air blower which opens the mouth of a bag body 3 by blasting air toward the mouth end of the bag 3 caught by a catching part 20 along a fitting base 1 in a state in which the mouth end side can be opened is provided. A guide part 28, comprising a surface guide part which guides an air blast in a direction along the base face of the fitting base 1 into the bag body 3 and a mouth guide part which guides in a direction to push open the mouth end of the surface side of the bag body 3 from the side of the fitting base 1, is provided at the upper stream of the air blast.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION The present invention automatically opens a sheet-like bag for housing and packaging vegetables and other foods and other articles sold in a supermarket or the like in a farmer or the like. The present invention relates to a sheet-like bag opening holding device that holds an open state.

[0002]

2. Description of the Related Art Conventionally, the insertion end of a bat umbrella in an umbrella bag provided for preventing a rainwater from dripping by inserting a wet bat umbrella is automatically opened by air. There has been proposed a device for keeping the open state (Japanese Utility Model Registration No. 2522).
No. 598), the open end of a sheet-like bag such as a plastic bag provided in a farmhouse and a supermarket for packaging a fixed amount of vegetables, foods, and other small-sized individual products with no fixed shape. To open,
There was no device for maintaining the open state.

Further, since the opening of the bag is wider than that of the umbrella bag, the opening of the bag can be stably held even if the opening holding device of the bag is constructed on the same principle as the opening device for the umbrella. In particular, small-sized vegetables and the like having an irregular shape cannot be easily inserted like a bat umbrella, so that it is difficult to directly apply the umbrella bag device as a bag opening holding device. Was.

[0004]

According to the present invention, there is provided a sheet-like bag opening holding device for solving the above-mentioned problems. First, the opening end 7 side of the bag body 3 can be opened along the mounting base 1. In a device provided with a locking portion 20 that locks in an appropriate state and a blower 11 that blows the bag 3 toward the opening end 7 to open the bag 3, On the upstream side, a guide portion 28 for guiding air is provided, and the guide portion 28 guides the air in a direction of blowing air into the bag body 3 along the base surface 1a of the mounting base 1; 3
And an opening guide portion for guiding an opening end on the front surface side of the mounting base 1 from the mounting base 1 side.

[0005] Secondly, an upstream guide portion 27 for converging the blown air of the blower 11 toward the guide portion 28 is provided between the guide portion 28 and the blower device 11, and the inner wall surface of the upstream guide portion 27 is attached to the mounting base 1. Guide surface 12 inclined in the direction intersecting with
b and a creeping guide surface 13b in a direction along the base surface 1a.

The third feature is that the opening guide is formed by an opening 23 opened at the tip end of the creeping guide surface 13b.

Fourthly, the creeping guide portion is characterized by comprising a ventilation gap 25 formed between the tip end side of the creeping guide surface 13b and the base surface 1a side of the mounting base 1.

Fifth, a holding member 14a is formed in the locking portion 20 so as to have a length equal to or less than the width of the bag body 3, and presses and fixes the opening end 7 side of the bag body 3 to the mounting base 1 side. That the fifth
The feature is.

[0009]

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a perspective view showing an embodiment of an apparatus for holding an opening of a sheet-like bag according to the present invention. FIG. 1 is a side view and a rear view of the opening holding device of the present invention,
FIG. 2 is an arrow view from the direction A and the direction B. As will be described later, a bag such as a plastic bag that houses and packs vegetables, food, other commodities, etc. for sale in a supermarket or the like will be described later. A plurality of mounting bases 3 are superimposed on each other in a state where they are crushed in a sheet shape and locked along the surface.
And a stand portion 2 for supporting the mounting base. The uppermost bag in the stacked bag 3 is automatically opened by an operation described later, and the opened state is maintained. It has a structure.

Here, the structure of the bag will be described.
As shown in FIG. 3, the bag body 3 is formed by fixing the peripheral ends (edges) of the two opposing sheet members 4 and 6 to each other by heat sealing so as to open only one place. It has a mold-shaped sheet-like bag shape, and has a structure in which one of the sheet members 6 protrudes from the open end 7 configured as described above to form a pressing margin 8. At this time, the bag body 3 is attached to the holding base 8 as described later.
A locking hole 9 is formed for locking the locking hole. The imaginary line in FIG. 3 shows the state of the bag 3 with the open end 7 open.

Next, the structure of the mounting base 1 will be described. As shown in FIGS. 1, 2 and 4, the surface of the mounting base 1 forms a flat base surface 1a on which the bag 3 is locked, and the rear surface 1b is detachably attached to the stand 2. It is possible (the mounting structure is not shown). A fan holder 12 holding a blower fan 11 that blows air in one direction (generates air) by being electrically driven is attached to the back surface 1b. A guide cover 13 for guiding air from the blower fan 11 guided to the base surface 1a side in a predetermined direction as described later, and a locking plate 14 for locking the bag body 3 to the base surface 1a as described later. And a rod-shaped pedestal portion 16 to be described later.
Are attached to the base surface 1a side.

At this time, the locking plate 14 is
A locking pin 14b having a pitch and a diameter corresponding to the locking hole 9 formed in the bag body 3 is protruded from one side (rear surface) of a plate-shaped restricting portion 14a formed to have a width equal to or less than the width. It has become. On the other hand, as shown in FIG.
A window-shaped ventilation hole 17 is formed to allow air generated on the side b to escape to the base surface 1a side.
A mounting hole 18 formed in the bag 3 and a mounting hole 18 facing the locking pin 14b are formed below the bag 7.

[0013] Then, as shown in FIGS.
Inserting the locking pin 14b into the locking hole 9 of the locking plate 1
4 is inserted into the mounting base 1 (the locking pin 14b is passed through the mounting hole 18), or the bag body 3 is placed on the base surface of the mounting base 1 so that the locking hole 9 faces the mounting hole 18 of the mounting base 1. 1a, and the locking pin 14 of the locking plate 14
b is inserted into the mounting base 1 from the bag body 3 side, and the locking plate 14 is pressed against the base surface 1a side, as described later, so that the locking plate 14 (the regulating portion 14a) and the base surface 1a.
Thus, the presser allowance 8 is clamped, and the bag body 3 is locked to the mounting base 1 along the base surface 1a. At this time, the mounting base 1
The opening end 7 of the bag body 3 locked to the (base surface 1 a) is located near the lower end of the ventilation hole 17.

Next, the structure of the fan holder 12 will be described. The fan holder 12 is, as shown in FIG.
It has a box shape with an open front (the shape of the open portion is opposed to the above-described ventilation port 17), and is fixed to the upper surface 12a at the inner upper end portion and the above-described blower fan 11
Is attached. An intake hole 19 is formed in the upper surface 12a at a portion facing the blower fan 11, and the blower fan 11 is driven to blow air to the lower end side. The rear surface 12b of the fan holder 12 is inclined at a predetermined angle so that the lower end is closer to the front side.

The fan holder 12 is fixed to the back surface 1b of the mounting base 1 via a flange 12c protruding from the outer periphery of the fan holder 12 so that the open portion of the fan holder 12 faces the ventilation hole 17. (Figure 1,
(See FIG. 5). On the other hand, as shown in FIGS. 5 and 6, a plate-shaped holding plate 21 is pivotally mounted on the inner surface of the back surface 12b of the fan holder 12 with its upper end rotatably supported. The lower end of the plate 21 is
When 1 is along the rear surface 12b (the inner surface of the rear surface 12b) of the fan holder 12, the upper surface (restriction portion 14a) of the locking plate 14 attached to the attachment base 1 described above.
Pressing portion 21a is formed to bend and extend so as to cover.

At this time, the holding plate 21 is rotated by a torsion coil spring 22 provided on the rotation supporting portion.
2 is urged toward the back surface 12b side, whereby the locking plate 14 that locks the bag body 3 is elastically pressed toward the mounting base 1 by the pressing portion 21a of the holding plate 21 as described above. , The bag body 3 includes the locking plate 14 and the pressing portion 21.
a (holding plate 21) securely locks to the mounting base 1. That is, the retaining portion 20 (FIG. 9) for retaining the bag body 3 to the mounting base 1 by the holding plate 21 and the retaining plate 14.
The locking portion 20 is provided with a regulating portion 14a which is a holding tool for holding the opening end 7 side of the bag body 3 and pressing and fixing the same to the mounting base 1 side.

The holding plate 21 is provided with a handle 21b. An operator swings the holding plate 21 upward by holding the handle 21b, and the pressing portion 21a moves the holding plate 14 to the base surface 1a. By releasing the pressing, the locking plate 14 can be easily set in the free state,
The bag 3 can be replaced. Also mounting base 1
The pedestal portion 16 is fixed in the left-right direction below the locking plate 14 in the mounting base 1 as described above.
The bag body 3 to be locked and mounted thereon is placed on the pedestal portion 16, and the vicinity of the opening end 7 of the bag body 3 protrudes from the base surface 1a.

Next, the structure of the guide cover 13 will be described. As shown in FIG. 8, the guide cover 13 has a box shape having an open back and a front end, and has a structure in which a plurality of vertically long holes are arranged in the left and right direction below the front surface 13a. The portion 23 has a structure in which an opening is formed. At this time, the rear opening portion of the guide cover 13 is formed slightly larger than the above-described ventilation hole 17, and is shown in FIG.
As shown in FIG. 6, the guide cover 13 is
The upper end of the base surface 1a can be pivoted between a closed state S that covers the locking plate 14 (the regulating portion 14a) and an open state O in which the ventilation hole 17 and the locking plate 14 are exposed. It is movably supported.

At this time, between the guide cover 13 and the mounting base 1 side, the guide cover 13 is in the closed state S and the open state O.
And a holding mechanism for holding the closed state S so that the guide cover 13 can be easily attached to and detached from the magnet 24 attached to the fan holder 12 side. It is structured to be fixed to.

As shown in FIG. 9, when the guide cover 13 is in the closed state S, the air blown from the blower fan 11 to the lower end side intersects the base surface as described above. Fan holder 12 inclined in the direction of rotation
Rear surface 12b (the inner surface of the rear surface 12b) and the holding plate 2
1 (the holding plate 21 is substantially along the back surface 12b), a ventilation gap 25 formed between the open end of the guide cover 13 and the base surface 1a, and an exhaust portion 2 of the guide cover 13.
The air blown to the air outlet 3 and guided and discharged by the air outlet 23 is supplied to the sheet member 4 on the non-locking side at the open end 7 of the bag body 3.
The air is guided and exhausted in a direction along the inclination of the back surface 12b and the holding plate 21 in a direction in which the air is pushed open from the base surface 1a, and the air discharged and guided by the ventilation gap 25 is directed along the base surface 1a. Is guided and discharged in the direction of blowing air into the bag body 3 along the inner surface 13b of the front surface 13a of the guide cover 13.

That is, the back surface 12 b of the fan holder 12 holding the blower fan 11 and the inner surface 13 b of the guide cover 13
As a result, the air from the blower fan 11 causes the sheet member 4 on the non-locking side at the open end 7 of the bag body 3 to move to the base surface 1a.
Exhaust part 2 which is an opening guide part for guiding in the direction of pushing and opening more
An upstream guide portion 27 that converges toward a guide portion 28 for blowing air, which is formed by a ventilation gap 25 that is a creeping guide portion that guides the inside of the bag body 3 along the base surface 1a in the direction of blowing air. I have.

Next, the opening operation of the bag 3 according to the present invention having the above configuration will be described. First, as shown in FIG. 1, the mounting base 1 is supported by the stand portion 2 and is set upright on the ground or the like, and as shown in FIG. 9, a plurality of the bags are crushed into a sheet as a set. And locked on the mounting base 1 (base surface 1a) by the locking plate 14 as described above.

When the blower fan 11 is driven with the guide cover 13 in the closed state S from this state, the air is guided and discharged from the exhaust portion 23 and the ventilation gap 25 of the guide cover 13 as described above. The air that is discharged is fed into the bag 3 from the opening end 7 of the bag 3 at the uppermost position in the direction along the base surface 1a, so that the non-engaged side sheet member 4 of the bag 3 opens. , Open end 7
Is opened to some extent, and the air guided and discharged from the discharge section 23 causes the opened sheet member 4 to move through the base surface 1a.
Bags 3 that are pushed further open and stacked in the above manner
The opening end 7 of the uppermost bag 3 automatically opens in a stable state, and this open state is maintained. At this time, if the blowing amount and the wind speed are appropriate, when the angle α formed between the base surface 1a and the back surface 12b of the fan holder 12 is approximately 30 °, the air discharged from the air discharging portion 23 is relatively stable. The bag 3 is held open.

Then, an article such as a vegetable is inserted into the bag body 3 in which the opening is held, and then the bag body 3 into which the article is inserted is detached from the mounting base 1 by tearing off the locking pin 14b or the like. Articles such as vegetables can be easily inserted into the bag body 3 and packaged. In this embodiment, in order to prevent the bag 3 from being torn off from the locking pin 14b due to the weight of the article when the article is inserted into the bag 3, a receptacle (not shown) such as a zigzag is used. A base 26 (see FIGS. 1 and 2) that can be placed below the body 3 is provided. A perforation (not shown) is formed on the side of the holding margin 8 of the bag 3, and after the article is inserted into the bag 3, the bag 3 into which the article is inserted is separated by the perforation. You may.

Although the bag 3 is placed on the pedestal portion 16 in the above-described locked state, the pedestal portion 16 is provided at a position substantially opposed to the opening end 7 of the bag 3. ,
When the bag 3 is locked, the opening end 7 is slightly open, and air in the creepage direction of the base surface 1a can be easily released.
It is to be led inside.

On the other hand, as shown in FIG. 6 and the like, the sheet member 6 of the bag body 3 on the locking side of the locking plate 14 is pressed by the pressing plate 21 to the base surface 1a via the restricting portion 14a. The free operation is regulated by being pressed and fixed to the mounting base 1, and the opening end 7 is stably opened by this regulation, and the width of the pressing and fixing is adjusted (the width of the right and left of the regulating portion 14a is adjusted). The bulge and width of the opening can be adjusted.

That is, the locking plate 14 functions as a restricting member for restricting the free range of the sheet member 6 on the presser margin 8 side of the bag 3, and the locking of the bag 3 and the above-mentioned restriction are simultaneously performed by the same component. The structure is simple and the cost is advantageous. At this time, the regulation width may be adjusted such that the right and left widths of the regulation plate 14 can be adjusted to expand and contract. However, a plurality of regulation plates 14 having different left and right widths (lengths) are prepared and exchanged for use. Is also good.

[0028]

According to the structure of the present invention constructed as described above, a bag such as a plastic bag for storing vegetables is attached and fixed to the mounting base at the open end, and air is blown by the blower. By blowing air, the bag body is opened by the air flow in the direction guided by the creepage guide portion and the air flow guided by the opening guide portion, and the open state is maintained, so that the bag with vegetables and the like is opened. This has the effect that it can be easily inserted into the body (such as a plastic bag). At this time, the air from the air blower is converged and guided by the upstream guide toward the air guide formed by the creepage guide and the opening guide, so that the air is stably supplied to the guide.

Further, by pressing and fixing a part of the opening end of the bag body in the width direction to the mounting base by the holding member, the opening shape of the bag body is stabilized, and the bag body such as a plastic bag is easily and reliably opened. Therefore, the trouble that the opening shape is disturbed is prevented. At this time, by adjusting the width of the pressing and fixing (adjusting the lateral width of the holding member), the size and swelling of the opening can be adjusted, and the opening state of the bag body can be further stabilized.

[Brief description of the drawings]

FIGS. 1 (a) and 1 (b) are an overall side view and a rear view of an opening holding device for a sheet-like bag.

FIGS. 2 (a) and 2 (b) are diagrams showing directions A and B in FIG.

FIG. 3 is a perspective view of a sheet-like bag.

FIGS. 4A to 4E are a plan view, a plan sectional view, an AA sectional view, a front view, and a side view of the mounting base.

FIG. 5 is an exploded side sectional view of a main part of an opening holding device for a sheet-like bag.

FIG. 6 is a front view of a main part of an opening holding device for a sheet-like bag.

FIGS. 7A to 7F are plan views of a fan holder, FIG.
It is a B sectional view, an AA sectional view, a front view, a side view, and a rear view.

FIGS. 8A to 8F are plan views of a guide cover, and FIGS.
A sectional view, front view, side view, rear view, bottom view.

FIG. 9 is a side sectional view showing the operation of the opening holding device for the sheet-like bag body.

[Explanation of symbols]

 REFERENCE SIGNS LIST 1 mounting base 1a base surface 3 bag body 7 open end 11 blower fan (blower device) 12b back surface of fan holder (inclined guide surface) 13b inner surface of guide cover (creepage guide surface) 14a regulating portion (holding tool) 20 locking portion 23 ventilation section (opening) 25 ventilation gap 27 upstream guide section 28 guide section

Claims (5)

[Claims] A locking portion (2) for locking an open end (7) side of a bag (3) along an attachment base (1) so as to be openable.
0) and an air blower (11) for opening the bag (3) by blowing air into the bag (3) toward the opening end (7). A guide section (28) for guiding air blowing is provided on the upstream side of the air blowing of
A creepage guide for guiding the air in the direction in which air is blown into the bag (3) along the base surface (1a) of the mounting base (1); and a front surface of the bag (3). An opening holding device for a sheet-like bag, comprising: an opening guide portion for guiding an opening end in a direction of pushing open from an attachment base (1) side. 2. An upstream guide section (27) for converging the blown air of the blower (11) toward the guide section (28) is provided between the guide section (28) and the blower (11). An inclined guide surface (12b) in which the inner wall surface of the portion (27) is inclined in a direction intersecting the mounting base (1), and a base surface (1a)
2. An opening holding device for a sheet-like bag according to claim 1, wherein said device comprises a surface guide surface (13b) extending in a direction along the line. 3. The device for holding an opening of a sheet-like bag according to claim 2, wherein the opening guide is formed by an opening (23) opened on the tip side of the creeping guide surface (13b). 4. The creepage guide according to claim 3, wherein the creepage guide is constituted by a ventilation gap (25) formed between the tip side of the creepage guide surface (13b) and the surface (1a) of the mounting base (1). An opening holding device for a sheet-like bag. 5. The attachment portion (20) has a length less than the width of the bag body (3), and the opening end (7) side of the bag body (3) is clamped to the mounting base (1) side. Presser (14)
The device for holding an opening of a sheet-like bag according to claim 1, wherein a) is provided.