JPS636406B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial Application Field) The present invention relates to a separating device for packaging bags, in which the first packaging bag placed vertically in a box and sent to the separating end is When using a device that sucks with a suction cup and moves to a supply position provided opposite to the separation end, separation of the first packaging bags and the second packaging bags is carried out in a vertical position. It has a field of application that makes it easy to apply it as it is and its separation is difficult.

(Prior art) A packaging bag passage is provided inside the stocker for transporting packaging bags vertically by a conveyor belt, and a separating end is provided at the tip of the passage, which is constituted by an inner surface wrapped around a stopper frame. A separating device for packaging bags is disclosed in Japanese Utility Model Application Publication No. 53-33573.

The device disclosed above has a structure in which the first packaging bag sent to the separation end and in contact with the inner surface of the stopper frame is adsorbed and separated by a suction pad. Although it is designed to swing in a fan shape around the lower shaft, the smell at the beginning of separation has the effect of separating the first and second packaging bags in the feeding direction. There is a disadvantage that it is difficult to separate the two when they are in close contact with each other.

(Problems to be Solved by the Invention) In view of the above, the present invention solves the problem of the close contact between the first and second packaging bags at the separation end, which becomes difficult to separate, by using a limit switch and a suction cup to apply pressure. The purpose of this is to prevent the malfunction of separating two packaging bags while they are still attached, by installing an air nozzle.

(Means for Solving the Problems) The present invention has been made to meet the objectives stated in the previous section, and specifically includes a conveyor belt 3 for conveying packaging bags vertically inside the stocker 1. A packaging bag passage 2 is provided, and at the tip of the passage 2 there is provided a separation end 6 formed by the inner surface of a stopper frame 5 that is passed around the stocker 1, and the first packaging bag at the beginning of the separation end is provided. an adsorption device 9 that adsorbs and separates a ₁ and moves it to a supply position provided opposite the separation end;
In a separating device provided with
A limit switch 13 that stops the separation, and a suction cup 12 that swings in a direction crossing the separation direction are provided, and furthermore, pressure is applied between the first packaging bag _a1 and the second packaging bag _a2 . This invention relates to a packaging bag separation device characterized by being provided with a pressurized air nozzle 14 for blowing air.

A preferred embodiment of the invention is described in the following section.

(Example) In the figure, reference numeral 1 denotes a stocker for packaging bags, and the bottom of a passage 2 for packaging bags a is made up of a conveyor belt 3 that is hung around a drive roll 4. A separation end 6 is provided on the inner surface of the stopper frame 5. Reference numeral 7 denotes a guide plate attached to the inner upper surface of the separation end 6 to guide the packaging bags a to the separation end. At the separation end 6, a separation arm 8 is provided with a suction cup 9 (suction device) that reciprocates in a straight line between the suction position indicated by the solid line and the supply position indicated by the chain line, and the separation arm 8 is attached to the separation end 6 by a shaft 11 on the outside of the separation end 6. The suction cup 12 attached to the tip is rotated reversibly by ° and moved as shown by the solid line between the position where it suctions the upper edge of the packaging bag a of the separating end 6 and the position intersecting the separating direction shown by the chain line. A swinging arm 10 is installed, and a suction cup 12 is provided on the swinging arm. The suction cup 12 does not have the function of conveying packaging bags to a supply position like the suction cup 9 (suction device). Swing arm 10 and suction cup 1
2 can also be pivotally supported on both outer sides of the separation end 6.
The suction cup 12 has a weak suction force, and is adapted to slide around the shaft 11 while sucking the packaging bags a, and to slide the suction position relative to the packaging bags.

Reference numeral 13 denotes a limit switch that faces the separation end 6 and stops the conveyor belt 3 at the same time as it senses the abutment of the leading end of the packaging bags a.

At the separation end 6, the first packaging bag is sucked forward by the suction cup 12 as shown in FIG.
A separation pressurized air nozzle 14 for blowing pressurized air is provided between A ₁ and the second leading packaging bag A ₂ .

In this embodiment, the first packaging bag a 1 is passed through the passage 2 of the stocker 1 and stopped at the separation end 6 on the rear surface of the stopper frame 5 by the limit switch 13 _.
At the same time, the suction cup 9 of the separation arm 8 approaches as shown by the solid line and starts suction, and at the same time, the swinging arm 10 at the solid line position swings around the shaft 11, and the suction cup 12 pulls the packaging bag _a1 . The upper edge of the ear is sucked in a direction crossing the separation direction and stopped at the position indicated by the chain line. Therefore, a gap 15 shown in FIG. 4 is created between the first packaging bag a ₁ and the second packaging bag a ₂ , and as the swing arm 10 swings, air is applied from the pressurized air nozzle 14. Pressure air is blown into the gap 15. Separated end 8
The suction cup 9 stops a short time after suctioning the packaging bag _A1 , or starts moving in the direction of the chain line position at the same time as suction, but
The blown pressurized air acts as a separating agent, and forcibly separates the second leading packaging bag _a2 from the first leading packaging bag _a1 .

Suction timing of packaging bag _A1 by suction cup 9, swinging arm 1
The suction timing of the edge of the packaging bag _A1 by the suction cup 12 of 0, the swinging timing, or the pressurized air nozzle 14
Whether to eject the pressurized air continuously or intermittently, what timing to do if it is intermittently, and how to start separation by the separation arm 8, etc., as described above. In addition to the description, various determinations can be made. In the present invention, pressurized air is blown between the first and second packaging bags a ₁ and a ₂ for separation when the first packaging bag leaves the separation end, so that the packaging bags are separated into one sheet. Since the separation is to be completed, the operating timing of each of the above-mentioned parts is adjusted in the most convenient manner to ensure precise separation.

(Function) The first effect of the present invention is that when the limit switch 13 provided at the separating end 6 sends the packaging bags a to the separating end 6 by the conveyor belt 3, the first packaging bag a ₁
The limit switch 13 senses the packaging bags (a) and stops the conveyor belt 3 before the bags (a) come into close contact with the inner surface of the stopper frame (5), and also stops the packaging bags (a).

The second effect is that the stopper frame 5 does not act to stop the movement of the packaging bags, so the first and second packaging bags a ₁ and a ₂ do not push against each other, and The four peripheries of the first-ranked packaging bag a ₁ correspond to the inner surface of the stopper frame 5 to seal the escape of the pressurized air, and the suction cup 12 moves the first-ranked packaging bag a ₁ in a direction intersecting the separation direction. It swings to create a gap 15 into which pressurized air is blown between the first and second packaging bags a ₁ and a ₂ , and the pressurized air blown from the pressurized air nozzle 14 is applied to both packaging bags a 1 and 2 . ₁ and _A2 , and even if both packaging bags _A1 and _A2 are in close contact, they are separated by the filled air layer, and only the first packaging bag, etc., _A1 is separated by the suction device 9. The aim is to complete the linear separation movement from the end 6 to the supply position while remaining vertically oriented.

The third effect is that when the first packaging bag a is pulled out from the separation end 6 by the suction device 9, the packaging bag that had been the second packaging bag until then becomes the first packaging bag. Bags a ₁ and limit switch 1
A small gap is created between the conveyor belt 3 and the conveyor belt 3.
is driven, the new first packaging bag _a1 is sent toward the inner surface of the stopper frame 5 within the separating end 6, and the above-described separating operation is repeated.

(Effects) Unlike conventional packaging bag separation devices of the same type, the present invention has a separation end 6 provided inside the stopper frame 5 of the stocker 1, and a separation device 9 for separating packages from the separation end 6 by a suction device 9. This makes it possible to make the supply position vertical by matching the supply position of the bags a, and as a means of this, the packaging bags a are brought into close contact with the stopper frame 5 of the separation end 6 by installing a limit switch 13. In addition, the difficult separation caused by the fact that there is almost no air space between the first and second packaging bags A ₁ and A ₂ can be avoided by crossing the separation direction. A gap 15 is created between the packaging bags a ₁ and a ₂ by the suction cup 12 that swings, and pressurized air is blown into the gap 15 from the pressurized air nozzle 14 to remove the packaging bags a ₁ and a. The _first packaging bag _A1 is pulled out from the separation end 6 by the suction device 9 and separated while performing air separation by filling the space between the two, so the two packaging bags are tightly attached. This has the effect of preventing malfunctions such as separation from the separation end 6 as it is.

[Brief explanation of the drawing]

1 to 4 of the accompanying drawings show an embodiment of the present invention, in which FIG. 1 is a plan view, FIG. 2 is a side view taken along line A--A in FIG. 1, FIG. 3 is a front view, and FIG. FIG. 2 is a plan view illustrating the operation. a → packaging bag, 1 → stocker, 2 → aisle, 5 →
Stopper frame, 6 → separation end, 8 → separation arm, 9 → suction cup, 10 → rocking arm, 12 → suction cup, 13 → limit switch, 14 → pressurized air nozzle.

Claims (1)

[Scope of Claims] 1. A packaging bag passage 2 provided with a conveyor belt 3 for conveying packaging bags vertically inside the stocker 1.
A separating end 6 is provided at the tip of the passage 2, which is constituted by the inner surface of the stopper frame 5 that is passed around the stocker 1, and the first packaging bag _A1 at the beginning of the separating end is separated by suction. In the separating device, the separating device is equipped with a suction device 9 that moves to a supply position provided opposite the separation end 6, and a limit switch 13 that stops the belt 3 when it senses that the leading end of the packaging bag a hits the separation end 6. , the gap 15 is created between the first and second packaging bags a ₁ and a ₂ by swinging in a direction crossing the separation direction.
A suction cup 12 is provided to create a
A device for separating packaging bags, characterized in that a pressurized air nozzle 14 is provided for blowing pressurized air between first and second packaging bags _a1 and _a2 .