JP2753939B2 - Bag holding device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to foods such as vegetables and confectionery and other articles such as powders (hereinafter referred to as articles).
And a bag holding device for holding the bag in an open state so that the bag can be easily put into a bag made of vinyl, paper, cloth, aluminum, or the like.

[0002]

2. Description of the Related Art In a conventional bag packing operation, an operator opens a bag by hand, holds the opened bag with one hand, and puts an article into the bag with the other hand. Was. For this reason, when the bag is held with one hand, the opening is narrowed, and it becomes difficult to insert the articles. In addition, when the number of articles to be input is plural, the number of articles to be input with one hand is limited, so that the input must be performed several times. in this way,
Workability was poor and not economical.

[0003]

SUMMARY OF THE INVENTION The problem to be solved by the present invention is to solve these problems of the prior art, to allow the bag to be opened and held to a maximum without using any manual operation, and to automate bag filling. Accordingly, an object of the present invention is to provide a bag holding device which is excellent in workability and is economical.

[0004]

The gist of the present invention that solves the above problem is that a plurality of bag holding claws urged horizontally or more by a spring are provided on the periphery of the opening of the annular body so as to be rotatable toward the center of the opening. A bag holding device provided with a rotation ring provided outside the annular body and a bag holding claw pressing mechanism for rotating the bag holding claw substantially vertically by rotation of the rotation ring at a predetermined angle.

[0005]

The bag holding claw of the bag holding device of the present invention is usually lifted upward by a spring toward the center of the opening of the annular body, so that the bag opened to some extent is moved below the bag holding device by some means. However, it does not become an obstacle that the bag holding claws are caught on the bag. Thereafter, when the rotating ring is rotated by a predetermined angle by any means, the bag holding claw pressing mechanism is operated, and the bag holding claw is pushed down until it becomes substantially vertical, and the tip of the bag holding claw enters into the bag opened to some extent, The bag is opened so that the inner surface of the bag is pushed open, tension is applied in the direction of the opening edge of the bag, and the bag holding claw is used to hold the bag in the fully opened state by using this tension.

To remove the bag from the bag holding device, rotate the rotating ring in the reverse direction and return the rotating ring to its original state, whereby the bag holding claw pressing mechanism is released and the bag holding claw that has pushed and expanded the bag is opened. Stops pushing the inner surface of the bag outward due to the restoring force of the spring, and returns to the original level or higher. As a result, the bag holding claws are completely removed from the bag, and the bag can be easily removed from the bag holding device.

[0007]

Embodiments of the present invention will be described below with reference to the drawings. In this embodiment, six bag holding claws each having a length approximately equal to the radius of the opening of the annular body are used, the tips of the bag holding claws are collected at the center of the opening of the annular body, and the rotating ring is instantaneously rotated using a spring. This is an example in which the plastic bag is rotated so that the bag holding claws are rotated substantially vertically.

FIG. 1 is a plan view of the bag holding device of the present embodiment, FIG. 2 is a bottom view of the bag holding device of the present embodiment, FIG. 3 is an explanatory view of the operation of the bag holding claw of the present embodiment, and FIG. FIG. 5 is an explanatory view of the operation of the bag holding claw of the embodiment, FIG. 5 is an explanatory view of the operation of the main part of the present embodiment, FIG. 6 is an explanatory view of the operation of the main part of the present embodiment, and FIG. FIG. 8 is an explanatory diagram showing the operation of this embodiment.

In the present embodiment, the fixing ring 8 having an opening shape substantially the same as the maximum opening shape of the plastic bag 16 is attached to the annular body 2.
A support plate 21 is provided at both ends of the annular body 2. Further, the rotating ring 8 has an opening shape larger than the opening shape of the annular body 2 and has an outer circle smaller than the outer circle of the annular body 2, and the arm 10 is attached to the rotating ring 8. The center point of the opening of the rotating ring 8 and the center point of the opening of the annular body 2 are matched with each other so that the rotating ring 8
The arm 10 is rotatably attached by a locking piece 17, and the arm 10 is connected to a position slightly away from the annular body 2 by a spring 11. or,
A hole 18 formed in a support plate 21 of the annular body 2 is moved up and down, and the arm 10 is locked by a locking claw 12 having an inclined surface 19 at the tip. The locking claw 12 is integrated with the movable piece 13, and the locking claw 12 is moved up and down in conjunction with the movable piece 13. It is assumed that the bag holding claw 3 is provided with a lower ring 4 at one end of an elongated iron bar having a length about the opening radius of the annular body 2. A connecting bar 5 is attached to the lower ring 4 at a right angle to the bag holding claw 3 to integrate the connecting bar 5 with the bag holding claw 3. The lower ring 4 is axially mounted on a shaft 6 in which a spring 7 is fitted, and the shaft 6 on which the bag holding claw 3 is mounted and another shaft 6 having the same configuration are opposed to each other with the opening center therebetween. A pair of shafts 6 on which the shafts 6 are attached are uniformly mounted on the periphery of the opening on the bottom surface of the annular body 2, and a spring 7 fitted on the shaft 6 is engaged with the bag holding claws 3 so that the bag holding claws 3 face the center of the opening. Hold horizontally.
As a result, the connecting bar 5 becomes vertical downward. Guidance for guiding a pushing mechanism that rotates the bag holding claw 3 almost vertically by rotating the rotating ring 8 at a predetermined angle so that the connecting bar 5 is tilted in the outer circle direction by rotating the rotating ring 8 at a predetermined angle. The bar 9 is tilted to the center of the opening slightly in the rotational direction, and the connecting bar 5 is brought into contact with the tip surface of the guide bar 9 at an acute angle, and the locking claw 12 that locks the arm 10 is released. The rotating ring 8 is rotated by using the restoring force of the spring 11 attached to the connecting member 10, the connecting bar 5 is tilted down by the guide bar 9, and the bag holding claw 3 is instantaneously rotated in the vertical direction.

Hereinafter, the operation of this embodiment will be described. To hold the plastic bag 16 with the bag holding device 1, the bag holding device 1 is set in a state where the arm 10 is locked on the locking claw 12. As a result, the guide bar 9 does not cause the connecting bar 5 to fall down, and the bag holding claw 3 integrated with the connecting bar 5 is held horizontally by the spring 7 as shown in FIG.
The tips of the bag holding claws 3 are all gathered at the center of the opening. Below the opening 20 of the bag holding device 1 in this state, a plastic bag 16 which has been opened to some extent is arranged by using a bag opening device 22 driven by a manual operation, a motor, a cam or the like. in this case,
Since the bag holding claws 3 are held horizontally, the plastic bag 1
When placing the plastic bag 6, the bag holding claws 3 do not become an obstacle, and the plastic bag 16 can be placed smoothly.

Then, as shown in FIG. 6, when the rear portion of the movable piece 13 integrated with the locking claw 12 is pushed downward by using a solenoid 23, the spring 15 is compressed around the rotation shaft 14 while the spring 15 is compressed. At the same time, the locking claw 12 goes into the hole 18 formed in the support plate 21 to stop the locking of the arm 10 and the restoring force of the tension spring 11 attached to the arm 10 causes the locking claw 12 to move downward. Rotates slightly, and the rotating ring 8 to which the guide bar is attached also rotates slightly in conjunction with the rotation.
As shown in FIGS. 3, 4, and 8, the connecting bar 5 that contacts the distal end of the guide bar 9 moves along the guide bar 9 by moving the guide bar 9 in the rotation direction of the rotating ring 8. It is guided to fall in the direction of the outer circle of the rotating ring 8,
When the rotation of the rotating ring 8 is completed, the connecting bar 5 is tilted down to the maximum, and the connecting bar 5 is held in a horizontal state by the guide bar 9 itself. Along with this, the tips of the bag holding claws 3 gathered at the center of the opening are connected to the connecting bar 5 and pivot downward, and enter into the opening of the plastic bag 16 which has been opened to some extent, and the plastic bag is opened. The opening of the plastic bag 16 is expanded so that the bag holding claw 3 pushes and expands the inner surface of the plastic bag 16, and tension is applied in the circumferential direction of the opening. The bag holding claw 3 becomes substantially vertical, giving a maximum tension in the circumferential direction of the opening of the plastic bag 16, and utilizing this maximum tension, the bag holding claw 3 is used.
Holds the plastic bag 16 in a state of being opened to the maximum.

When the articles are put in, the articles 25 can be put into the plastic bag 16 simply by putting the articles 25 through the opening 20 of the annular body 2. Stopped belt conveyor 2
4, a plastic bag 1 with the weight of the input article 25
6 does not further slip off from the bag holding claw 3.

When the plastic bag 16 is removed from the bag holding device 1, the arm 10 is rotated in the reverse direction by the advancing of the arm return bar 26, which is driven manually, by a motor, a cylinder, or the like, to the arm 10, and the original locking is performed. While rotating to the position of the claw 12, the spring 11 is pulled and the arm 10 is locked to the locking claw 12. As shown in FIG. 5, since the movable piece 13 is constantly pushed up by the spring 15, the leading end of the locking claw 12 is also constantly interlocked with the
It protrudes from 8. However, since the tip of the locking claw 12 is the inclined surface 19, the arm 10 itself can push up the locking claw 12 to pass below the locking claw 12,
After the passage, the locking claws 12 protrude from the holes 18 so that the arm 10 can be locked easily. Accordingly, the rotation ring 8 also moves, and the guide bar 9 that has held the connecting bar 5 vertically moves to the original position, thereby releasing the connecting bar 5 from falling down. For this reason, the bag holding claw 3 integrated with the connection bar 5 stops pushing and expanding the inner surface of the bag outward by the restoring force of the spring 7 which holds the bag holding claw 3 horizontally. As a result, the bag holding claws 3 are completely removed from the bag, and the bag can be easily taken out of the bag holding device 1.

[0014]

According to the present invention, since the tip of the bag holding claw is horizontally held toward the center of the opening of the annular body, the bag is caught by the bag holding claw when the bag is arranged below the opening. It can be arranged smoothly without any problem. In addition, even if the opening of the bag opened to some extent is slightly insufficient, the bag holding claw pushes and expands the opening, so that the bag can be opened reliably, and tension is applied to the periphery of the bag opening to open the bag to the maximum. Therefore, the bag can be securely held and removed, and can be performed very easily and quickly, resulting in very excellent workability. Furthermore, the bag can be handled in a sanitary manner because no manual operation is required.

[Brief description of the drawings]

FIG. 1 is a plan view of a bag holding device of the present embodiment.

FIG. 2 is a bottom view of the bag holding device of the present embodiment.

FIG. 3 is a diagram illustrating the operation of the bag holding claw according to the present embodiment.

FIG. 4 is an explanatory view of the operation of the bag holding claw of the present embodiment.

FIG. 5 is an operation explanatory view showing a main part of the embodiment.

FIG. 6 is an operation explanatory diagram showing a main part of the embodiment.

FIG. 7 is an explanatory diagram showing the operation of the present embodiment.

FIG. 8 is an explanatory diagram showing the operation of the present embodiment.

[Explanation of symbols]

 Reference Signs List 1 bag holding device 2 annular body 3 bag holding claw 4 lower ring 5 connecting bar 6 shaft 7 spring 8 rotating ring 9 guide bar 10 arm 11 spring 12 locking claw 13 movable piece 14 rotating shaft 15 spring 16 plastic bag 17 locking piece Reference Signs List 18 hole 19 inclined surface 20 opening 21 support plate 22 bag opening device 23 solenoid 24 belt conveyor 25 article 26 arm return bar

Claims (1)

(57) [Claims] A plurality of bag holding claws urged horizontally or above by a spring are provided on the periphery of the opening of the annular body so as to be rotatable toward the center of the opening, and a rotating ring is provided outside the annular body. A bag holding device comprising a bag holding claw pressing mechanism for rotating a bag holding claw substantially vertically by rotation of a predetermined angle.