JPH0692326A - Bag supporting holdr - Google Patents

Abstract

PURPOSE:To prevent an opening of a bag from being closed by the restoring force of bag itself while it is in a carrying holder. CONSTITUTION:A holder includes two inner walls 20 located above a bottom plate 10 with a specified space left between them, and outer walls 22 provided outside both inner walls 20, and a vacant space 23 formed between the inner and outer walls 20 and 22. When a holder conveying belt 30 reaches a position above a vacuum drum 33, air in the space 23 is sucked out through a vacuum suction hole 24 provided in the bottom plate 10 and a suction force acts on vent holes 21 provided in the inner walls 20, so a bag is kept spread over the interior walls 20.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a support holder for supporting a packaging bag having an open upper side so as to hold it from the surroundings and for carrying the bag in an open state.

[0002]

2. Description of the Related Art A general packaging device transfers a large number of clamps arranged at equal intervals by a conveyor, supplies empty bags to each of the clamps, and supports the clamps. On the other hand, although the structure is such that the objects to be packaged are sequentially filled during the transfer, the device is apt to cause the bag to be missed by the clamp, and it is difficult to continuously produce packaged products. Conventionally, for example, as shown in Japanese Utility Model Laid-Open No. 58-904 or Japanese Patent Laid-Open No. 59-62421, each bag is supported by a large number of independent holders, and each bag is transported integrally with each holder. At the same time, the material to be packed was filled. That is, the holder is a frame body having a hole formed in the center thereof, and after the bag is put into the hole from above and supported, compressed air is blown to fill the bag with the object to be packaged. Open the bag with.

[0003]

However, since the holder only supports the bag by dropping it in the hollow in the middle, the bag inflated by blowing compressed air has its own restoring force when the compressed air pressure is lost. As a result, the bulge of the entire bag declined, and in the case of a gusset bag or a self-supporting bag, the hard bottom portion was difficult to spread, which sometimes hindered the filling of the packaged item. Therefore, the present invention provides the holder with a structure capable of holding the bag in the open state.

[0004]

In order to achieve the above object, the present invention arranges two inner walls in a vertical state on a bottom plate having a predetermined area with a predetermined spacing. An outer wall connected to the outer side of each of the inner walls to form a hollow space surrounded by the wall surfaces between the inner wall and the outer wall, while sucking air in the hollow space. A holder is formed by forming a vacuum suction hole on the outer wall surface of the hollow space and forming a number of ventilation holes on the two inner walls.

[0005]

In the holder, the bottom plate is brought into contact with the upper surface of the workbench and conveyed in one direction, and after the bag is supplied between the two inner walls during the conveying step, the outside of the hollow space between the inner and outer walls When a vacuum suction force is applied to the space from the vacuum suction holes of the bag, the bag is squeezed by the suction effect of the many ventilation holes of the inner wall, and in some cases, by inflating the bag by blowing compressed air. Suction and swell on the inner wall of the sheet,
The bag is supported by the holder in an open state. In addition, even a gazette bag with a solid bottom or a self-supporting bag is opened by compressed air into the bag and suction force outside the bag.

[0006]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT The holder shown in the drawing has a rectangular bottom plate 10.
A slightly small rectangular casing 11 is continuously provided on the upper side of the casing, a disc 12 having a larger area than the bottom plate is provided on the casing, and a bag is formed in an oval hole 13 formed at the center of the disc. A hollow body 14 having a shape is vertically provided. The hollow body 14 has two vertical inner walls 20, which are substantially arc-shaped.
20 are opposed to each other, and a large number of vent holes 21 are made to penetrate through both inner walls. An outer wall 22 formed by a casing 22 is provided on the outer side of both inner walls 20, a hollow space 23 is formed between the inner wall and the outer wall, and a vacuum suction hole is formed in the bottom plate 10 to suck air in the space. 24 are formed.

As shown in FIG. 1A, when the holder is mounted on the belt 30 of the belt conveyor used as a work table, the belt 30 which is moved by the rotation of the foil 31 is moved.
The holder is transported together with. Vacuum suction hole 24 on the bottom plate
The holder is placed so as to match the through hole 32 formed in the belt, and the gap hole 34 in the vacuum space 33 on the lower surface of the belt is placed.
When the through holes 32 communicate with each other, a vacuum suction force acts on a large number of vent holes 21 due to the negative pressure acting on the space 23. On the other hand, as shown in FIG.
When the bag 36 is inserted into the spatula 6 and a vacuum is applied to the spatula through the hose 37, the bag 36 is sucked by the suction force acting on a large number of breathing holes 38 formed on both sides of the spatula 35.
Adsorb on the surface of. Therefore, a spatula 35 as shown in B of FIG.
While inserting the bag 36 into the two inner walls 20 integrally with
When compressed air is fed into the spatula from the hose 37, the compressed air causes the bag to swell as shown by the imaginary line 36a, while the suction force acting on the ventilation hole 21 causes the bag to be attracted to the two inner walls 20.

[0008]

[Effect] The present invention applies a vacuum to the space through the vacuum suction hole outside the hollow space between the inner wall and the outer wall during the transportation of the holder transported on the workbench, and with the negative pressure thereof. When a suction force is generated in the ventilation holes formed in the two inner walls, the bag is adsorbed and supported by the two inner walls, and as a result, the bag can be held in an open state against the restoring force of the bag. Therefore, unlike the conventional holder, the bag does not naturally close due to its own restoring force, and there is an effect that the work of filling the packaged object into the bag can be performed without error.

[Brief description of drawings]

FIG. 1A is a cross-sectional view of a state where a holder is being conveyed by a belt conveyor.

FIG. 1B is an explanatory diagram when the bag is installed in the holder.

FIG. 2 is a sectional view taken along line II-II in the previous figure.

FIG. 3 is a perspective view of a bag supply device.

[Explanation of symbols]

10-bottom plate, 20-inner wall, 21-vent hole, 22-
Outer wall, 23-space, 24-vacuum suction holes.

Claims (1)

[Claims] 1. A two-sided inner wall is arranged in a vertical state on a bottom plate having a predetermined area at a predetermined distance, and an outer wall is continuously provided outside each of the inner walls.
A hollow space surrounded by the wall surfaces is formed between the inner wall and the outer wall, and a vacuum suction hole for sucking air in the hollow space is formed on the outer wall surface of the hollow space. In addition, a holder for supporting the bag, which is formed by forming a large number of ventilation holes on the two inner walls.